JHARKHAND STATE ELECTRICITY BOARD

JHARKHAND STATE ELECTRICITY BOARD 

OFFICE OF THE CHIEF ENGINEER (STORE & PURCHASE) 

ENGINEERING BUILDING, HEC, DHURWA, RANCHI-4 

NIT No. 217/PR/JSEB/2011-12. 

for 

Manufacturing, testing & supply of type-tested, 11/.433 kV, 03 star, 63 kVA, Al wd, 

stack type CRGO core, distribution transformer fitted with lightning arresters (LA) 

and Completely self protected (CSP). 

Quantity: 15 # 

Due date of tender : 24.06.2011 at 14.30 hrs. 

Issued to: _____________________________________ 

______________________________________ 

______________________________________ 

Price of tender document: 

Rs. 2000/-(two thousand) only. 

FIRM price 

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FAX NO. 01191 – 2400799 

NIT No. /JSEB/PR/11-12 Due Date of opening of part-I 24.06.2011 

General Terms and Conditions for Submission of Tender for Supply of Materials 

1. Sealed tenders in duplicate are invited from reputed, experienced and financially sound 

manufacturer for procurement of transformers from ready stock (Ex-Stock) having adequate 

manufacturing & testing capacity, best facilities and capability only for supply of type-tested, 

11/.433 kV, 03 star, 63 kVA, Al wd, stack type CRGO core, distribution transformer fitted with 

lightning arresters (LA) and Completely self protected (CSP) as per specifications attached at 

Annexure ‘B’. Offers of manufacturers who have no past experience and adequate manufacturing 

capacity of the tendered item may not be considered valid and may be rejected. 

2. Quantity : 15 (fifteen ) # 

(Actual Quantity may Increase or Decrease) 

3. The tender should be submitted in the prescribed enclosed proforma only in two parts i.e. Part – I 

(Technical & Commercial Part) and Part – II (Price Part) in two separate envelops duly sealed 

and super scribed on the top of the envelops as Technical and Commercial Part – I/ Price Part – II 

and addressed to Chief Engineer (S&P), JSEB Ranchi – 4. The name of the firm, NIT No., Due 

date, Name of materials offered, amount of earnest money deposited with money receipt # and 

date should be clearly indicated on the cover of the envelop. 

4. Both parts of the sealed tenders will be received upto 13.00 hrs. of 24.06.2011 in the office of 

Chief Engineer (S&P), JSEB Ranchi and the Part – I will be opened at 14.30 hrs. on the due 

date in presence of such of those tenderers or their authorized representatives as may desire to be 

present. The undersigned may extend the due date of opening of Part – I with intimation to all 

tenderers. 

The Price Part (Part–II) of those tenderers whose offers are found technically and 

commercially acceptable will be opened later on. The exact date will be intimated to the 

responsive tenderers. 

5. No offers/ tenders will be accepted after due date and time and shall be treated as rejected. 

The desirous tenderers can purchase tender documents including terms and conditions, BoQ and 

technical specification from the office of Chief Engineer (S&P), JSEB Ranchi on application and 

payment of Rs. 2000/- (Rupees two Thousand ) only (non-refundable) in cash or in shape of 

demand draft issued by nationalized Bank/scheduled Bank in favour of Deputy Director of 

Accounts (Sectt.), JSEB Ranchi payable at Ranchi on any working day (working hours:-10.00 

AM to 05.00 PM) up to one day before the due date (i.e., upto23.06.2011) . No tenders will be 

accepted/ considered unless the tenderer buy at least one copy of the tender documents by the 

prescribed date. 

6. Earnest money: 

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a) Tender must be accompanied with an earnest money for Rs.25,000/- (Rupees Twenty 

Five Thousand) only for the offered quantity, unless exempted from such deposit, failing 

which the tender will be out rightly rejected. 

b) The earnest money should be deposited in cash with Dy. Director of Accounts (Sectt.), 

JSEB Ranchi and reference of the money receipt no. and date is to be given in the tender 

or in the form of Bank Draft or BG of any Nationalized Bank, valid for 90 days from 

date of opening of tender drawn / issued in favour of the Dy. Director of Accounts 

(Sectt.), JSEB, Ranchi payable at Ranchi and reference be given on the cover of the 

tender mode indicated in NIT. The Bank Guarantee with lesser validity will be rejected. 

c) Cheque/ Fixed Deposit receipt/ Money Order or and saving certificate etc. are not 

acceptable towards deposit of earnest money and tenders with above will be considered 

without earnest money and shall be rejected. 

d) Earnest money deposited by firms against any other tender of the Board/ or of this office 

will not be considered as earnest money for the present tender under any circumstances. 

e) No earnest money will be accepted after opening of the tender. 

f) No interest on the earnest money deposited by the tenderer will be payable by the 

purchaser. 

7. Exemption: 

The tenderers of following categories are exempted from deposit of earnest money 

subject to the conditions laid down below: - 

a) The firm registered with DGS&D for manufacture of the item for which tenders are to be 

submitted and the registration certificate should remain valid at the time of submission of 

the tender and during contract period. The tender in such case shall be accompanied with 

a certified photo state copy of the valid registration certificate failing which the tender 

shall be rejected. The estimated cost of the offered quantity, as per cl # 6 (a) of NIT, 

should be less than the monetary limit as mentioned in the DGS&D certificates, failing 

which the exemption will not be applicable & offer will be rejected. 

b) The State Govt./ Govt. of India undertaking. 

c) Firms registered with NSIC under single point registration scheme for manufacture of the 

item, provided that certificate is valid on the date of tender and during the period of 

delivery. The estimated cost of the offered quantity, as per cl # 6 (a) of NIT, should be 

less than the monetary limit as mentioned in the NSIC certificates, failing which the 

exemption will not be applicable & offer will be rejected. 

In case the Monetary limit of DGS&D certificate / NSIC certificate is less than the 

estimated cost of the offered quantity the bidder are allowed to deposit the Earnest Money 

Deposit of deferential estimated cost (estimated cost of offered quantity -Monetary limit 

of D G S & D certificate / NSIC certificate) as per clause 6 (a) of tender in shape of 

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cash/Bank Draft/Bank Guarantee (of Nationalized Bank) along with bid, failing which the 

bid shall be rejected. 

d) The earnest money will be liable to be forfeited on revocation of tender before the validity 

of the quotations expires or on refusal to enter into a contract after the award (LoI/PO) is 

made to the tenderer. 

e) SSI unit of Jharkhand, registered with Department of Industries, Govt of Jharkhand / 

Industrial Area Development Authority, Govt of Jharkhand, for tendered item, valid on 

the due date of tender and during the period of contract. SSI unit of Jharkhand must 

submit self attested or notarized valid copy of SSI registration certificate for tendered 

item, issued from department of Industries/ Industrial Area Development Authority, Govt 

of Jharkhand, failing which, they will not be considered SSI unit. 

The tender in such cases should be accompanied with self attested or notarized 

copy of the valid registration certificate, failing which tender shall be rejected. 

NB: Aforementioned certificate must accompany with documentary evidence for its validity 

on the due date of the tender, failing which tenders will be rejected. As the documents 

mentioned herein above must be valid during the period of supply/ delivery also. Copy of 

the same shall be produced at the time of submission of bill for payment. 

8. Security Deposit and Contract Agreement: 

The successful tenderers shall have to deposit security money @ 2% of the ordered value at the 

time of executing the contract agreement. However, the SSI units of Jharkhand having permanent 

valid registration with Department of Industries /Industrial Area Development Authority (IADA) 

Govt. of Jharkhand for the manufacture of the item will be required to deposit security money @ 

1% (one percent) of the ordered value. In no case, exemption from security money will be 

granted. Security money to be deposited may be adjusted from the earnest money deposited in 

shape of cash/ Bank Draft only, if any. 

The amount of security money shall be deposited with DDA (HQ) JSEB, Ranchi in cash 

or in shape of Bank Draft/ Bank Guarantee (of any Nationalised Bank) will be treated as a 

performance guarantee. The security money thus deposited will be released after completion of 

satisfactory supply of approximately full ordered quantity of materials and expiry of guarantee 

period. Payment will be made only after depositing the security money and execution of contract 

agreement. 

9. Annual turnover: 

Annual turnover of the firm for preceding three financial years must be at least Rs. 3.55 lac. 

Certified / Attested copy of annual A/C (Balance sheet, profit & loss A/c etc) from practicing 

chartered Accountant or both for financial year 2007-08, 2008-09 & 2009-10 must be submitted 

along with the offer to establish financial credibility of the bidders. In absence of the above 

credentials, offer may be rejected. However, SSI units of Jharkhand are exempted from annual 

turnover clause. 

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10. Delivery: 

The material are to be delivered on or before 07.07.2011 at Central Stores, Deoghar and Dumka.. 

11. Penalty / Liquidated damage: 

The delivery of goods will be guaranteed under liquidated damage clause. Our usual terms of LDclause 

is ¼% (quarter percent) of the value of the materials delayed per week or part thereof 

subject to maximum 5% (Five percent). 

Type-tested, 11/.433 kV, 03 star, 63 kVA, Al wd, stack type CRGO core, distribution transformer 

fitted with lightning arresters (LA) and Completely self protected (CSP)will be deemed to have 

been delivered only when all its component parts are also delivered in stores of JSEB. If certain 

components are not delivered in time the equipment/item will be considered as delayed till such 

time as the missing parts are delivered. 

12. Price: 

Rate in figures and in words must be quoted in the enclosed proforma of price part on FIRM 

price, subject to any statutory change in due course of time, indicating therein Ex-factory price, 

freight element up to destination, element of Excise duty, sales tax and other charges. The Exworks 

price shall be quoted after considering benefit under CENVAT or any other scheme to be 

retained by the supplier. The materials are to be dispatched to various destinations in Jharkhand 

as may be required. The responsibility of safe delivery will rest with the supplier. If the price 

elements are not quoted separately as indicated above, the tender will be liable for rejection. 

Freight element will include loading, unloading, packing and forwarding complete. If any other 

taxes are levied or reduced by the Govt. the same will be added or subtracted respectively to the 

landed cost for evaluation of the tender. If Excise Duty, Sale Tax / VAT or Entry Tax is not 

quoted separately or proof of exemption of the same is not given, the relevant duty and / or tax at 

the maximum rate will be added to evaluate landed cost of the bidder. 

Arithmetical errors will be rectified on the following basis: If there is discrepancy 

between unit price and the total price i.e obtained by multiplying the unit price and quantity, the 

unit price shall prevail and total price shall be corrected. If the bidder does not accept the 

correction of errors, his bid will be rejected & EMD will be forfeited. If there is a discrepancy 

between words and figures, the amount in words shall prevail. 

13 Insurance: 

The materials are to be insured with Board’s underwriter under its Inland Marine Cargo policy in 

all cases for which the supplier should complete the Board’s proforma and sent the original to the 

Chief Claim Officer, Jharkhand State Electricity Board, Ranchi for taking over a policy with copy 

to the consignees and paying officers concerned at the time of dispatch of each consignment. As 

such the Insurance premium should not be included in the quoted price. Failure to submit the 

insurance proforma duly filled in and signed by the suppliers shall make the suppliers liable for 

any damage during the transit of materials. 

In case the materials are insured under the Board’s open policy the consignee concerned 

will take prompt action to lodge a claim with the supplier, Carrier and the Insurance Company 

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with an intimation to the Chief Claim Officer of the Board for the materials received short/ in 

damaged conditions and no recovery of the cost of such materials shall be effected from the 

supplier’s bill except for short supply for reason of defective packing or any other lapses on the 

part of consignor. If packing cases are not found intact conditions at the time of taking delivery 

and the materials therein are found short, the cost of such materials shall be recovered from the 

supplier’s bill. Similarly the supplier will be liable for compensation for defective packing. 

However, non recovery will be limited to amount reimbursed by Insurance Company and balance 

amount will be recovered. 

14. Import Licence: 

Import licence cannot be arranged by the Board for such of these materials, which are under 

banned category of import. When import is desired to be effected by the tenderers under their 

own quota licence, the value of quota specifically available against the tender should be stated. In 

case of availability of suitable indigenous make materials the same may be preferred. 

15. Tests: 

All routine tests will have to be conducted on the materials in case order is placed according to 

relevant standard and test certificate in triplicate will have to be furnished prior to supply of 

materials. Each lots of the materials shall be subjected to the test prescribed in the relevant 

standard (latest edition) before supply is affected. Untested material will not be accepted. 

16. (i) Inspection: 

The materials may be inspected by the Board’s representative during the process of 

manufacturing and prior to dispatch. The suppliers are requested to intimate the progress of 

manufacturing and testing at least 15 days in advance to Chief Engineer (S&P), JSEB Ranchi to 

enable them to depute an officer or an authorized representative for inspection. Failure to adhere 

to the specification will entail rejection of materials. All tests and inspection shall be made at the 

place of manufacture unless otherwise specially agreed upon by the manufacturer and purchaser 

at the time of purchase. The manufacturer shall offer the inspector representing the purchaser all 

reasonable facilities without charges to satisfy him that the material is being furnished in 

accordance with the specification. The materials cleared for dispatch after approval of inspection 

report should be dispatched/ delivered immediately to different consignees. 

(ii) The purchaser has the right to have the tests carried out at his own cost by an independent 

agency whenever there is a dispute regarding the quality of supply. 

(iii) During the pre-dispatch inspection the firm shall have to produce original copy of 

calibration certificate of testing equipments (not more than one year old)/ type test report/ 

BIS license/ NSIC, DGS&D or SSI registration certificate to the inspecting officer for 

verification. If there is any discrepancies found during verification the materials may not 

be accepted. These documents should be authenticated by inspecting officer at the time of 

inspection and forwarded to accounts with bills of each lot. 

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(iv) 

The pre-dispatch inspection & testing is mandatory unless an order for waiver of the same 

is given by the competent authority. These documents should be attested by inspecting 

officer at the time of inspection & forwarded to accounts with bills of each lot. 

17. Forfeiture of Earnest Money & Security Money Deposit: 

It should be clearly understood that in the event of the tenderers failing to accept and execute the 

telegraphic and detailed orders (LoI/PO), if it is placed within the validity period of the offer, 

then the full amount of earnest money and security deposit will be forfeited and the Board’s 

decision in this respect will be final and binding on the tenderer. Earnest money of those 

tenderers will be forfeited who are found indulging in changing adding or deleting the conditions 

of the “downloaded tender document”. 

Earnest money of those tenderers will be forfeited who are found to form cartel. 

The forfeiture of earnest money and security money shall not in any way affect, limit or 

extinguish any remedy or relief to which above authority may at any time be lawfully entitled. 

18. Guaranteed Particulars: 

The performance particulars as required in the specifications should be sent along with the tender, 

other details not specified may also be given. 

19. Manufacturing Capacity: 

The tenderer must have sufficient manufacturing capacity to meet the delivery schedule as per 

clause 10. The bidder should also be financially sound to manufacture the tendered item within 

scheduled time. 

In support of above capacity the tenderer must produce documentary evidence Viz 

Annual Accounts / Bankers Solvency certificate etc. 

20. Past Performance: 

Bidders must submit detailed list of executed purchase orders along with their copies for the same 

item or same item of higher size and capacity clearly indicating PO # and date with name of material 

and its quantity & value and also submit name and address of the ordering authority issued in atleast 

any one of the last 3 (three) years from the due date of tender, failing which the offer may be rejected. 

The bidder should also submit performance certificate if any, indicating period of supply, quantity and 

value for the tendered item issued during the above period with the offer. 

Offers of those firms who have not completed full ordered quantity against previous 

Purchase Orders of JSEB for this item issued during last one year from date of opening of this 

NIT, shall not be considered as valid and shall be rejected. On placement of order, Bidder has to 

complete the order, failing which the bidder shall not be eligible to participate in forth coming 

tenders, for a period of at least one year from the date of issue of such purchase order. Past 

performance of the material supplied earlier by a bidder to JSEB may be taken in to account 

while finalizing this tender. 

21. Deviation from Specification: 

If there are some deviations, then it must be mentioned in the schedule of deviations from 

specification sheet annexed separately. In case of not mentioning deviations in the deviation sheet and 

just mentioning it at any other place of the offer except in the tender proforma for part-I (Techno 

commercial part) will be treated as no deviations. 

22. Income Tax and Sales Tax: 

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Attested copies of Sales Tax clearance certificate atleast valid upto 31.03.2010 should 

accompany the tender, failing which the tender is liable to be rejected. State and Central 

Sales Tax registration number of the tenderer should also be stated. Self declaration certificate 

with a declaration separately that nothing is due to Income Tax Department & payment of Income 

Tax is up to date should be enclosed with the offer. 

23. Taxes & Duties and Landed Unit Rate Evaluation Process: 

(i)The bidders must quote entry tax amount if applicable in price part II at the time of 

submission of the offer. In case the bidder doesn’t quote entry tax amount in the price part-II, 

or just mention entry tax amount “NIL” or quote absurd rate of entry tax then applicable rate 

of entry tax will be taken into account for evaluation of the tender. The evaluation of L-1 

bidder shall be made on the landed unit rate (ie FoR destination basis), which is 

inclusive of the ex-works price, excise duty, CST/VAT, freight, entry tax etc. 

(ii) Excise Duty / CST shall be paid at the rate quoted by the bidder in the price part-II 

submitted with the offer against the NIT subject to statutory variation (in case of both, 

increase or decrease) imposed by the Government but any increase in taxes and / or duties 

because of the increase in the bidders annual-turn-over etc, for which the firm is functionary, 

would be borne by the firm. 

No upward variation shall be payable beyond the contractual delivery schedule. In 

case supply against the contract is completed late and rate of ED/S. Tax undergoes upward 

revision, the payment will be continued on the basis of rates prevailing during the contractual 

schedule. 

24 Progress Report: 

The suppliers will have to submit monthly/ fortnightly progress report regularly until completion 

of delivery, to the Chief Engineer (S&P), JSEB Ranchi by the first week of every month 

following the month in which order is placed to monitor the progress made by the supplier 

towards proper execution of the order, alongwith copy to paying authority. 

25. Terms of Payment: 

a) 100% payment will be made by Dy. Director of Account (HQ), JSEB, Ranchi on submission of 

5% Bank Guarantee from any Nationalised Bank of ordered value on non-judicial stamp Rs. 60/- 

(Rupees sixty) only valid for Guarantee period as per Cl-39 and on receipt of SRV duly signed 

by the concerned consignee after receipt of the materials in good condition along with approved 

routine test certificate and duly filled check list for payment from Stores & Purchase wing. 

b) If the Bank Guarantee of any Nationalised Bank is not furnished, payment will be made after 

deducting 5% of the total order value from the first or consecutive bills after receipt of the 

materials in good condition along with approved routine test certificate and duly filled check list 

for payment from Stores & Purchase wing. The deducted amount will be kept back as 

performance guarantee and will be released after successful completion of guarantee period. 

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For the above modes of payment ¼ % (Quarter percent) rebate will be deducted from the 

ex-factory price of the materials. However, Excise Duty part will be paid only after production of 

documentary evidence as per prevailing Excise Rules. Sales Tax will be paid on submission of 

upto date income tax and sales tax deposit certificate by competent authority of respective 

department. The paying officer will accept the Bank Guarantee after confirmation from the 

concerned bank. Supplier must submit documentary evidence in support of claim for exemption 

from any tax or duty if any. The 5% amount / B.G. will be paid after expiry of Guarantee period. 

The above payment term is applicable in accordance with compliance of clause # 27 & 37 of 

the tender. 

26. Validity Period: 

Tenderer should specify the validity period of their offer which should not be less than 90 

(ninety) days from the date of opening of tender, which may be extended on discretion of the 

Board. The offers with lesser validity period will be outrightly rejected. 

27. Quality Control- (For Distribution Transformers only) 

3 star rating being new item to JSEB, 1(One) # from the supplied distribution transformer into the 

stores of JSEB, on each lot of offer of pre-dispatch inspection shall be randomly selected by 

JSEB & sent for CPRI for type-test (short circuit and lightning impulse) at the cost of JSEB. The 

payment to the supplier shall be made on submission of 100% B.G. of payable amount alongwith 

SRV & other documents. The BG thus submitted valid for 06 months, subject to extension till 

completion of type test, shall be released only after submission of successful type test from CPRI, 

failing which the BG of that particular offered lot will be encashed & bidders will be allowed to take 

back all the transformers supplied in that particular offer & pre-dispatch inspection lot, at their own 

cost. 

The Board may inspect / test / examine the quality of the raw materials at the 

premises of the prime supplier to the bidders of JSEB at the Boards own cost. Stage/factory 

inspections shall be conducted by the inspecting officers of the Board / third party inspection. 

28. Raw Materials: 

No raw materials will be arranged by the Board. Tenderers will have to arrange their 

requirements of raw materials themselves. 

The Purchase reserves the right to inspect the raw material procured by the supplier for 

the purpose of manufacture of materials to check the genuineness of the raw materials. The 

purchase or his representative can demand the original invoices in respect of all the raw materials. 

29. Minimum Quantity: 

The requirement mentioned in the tender notice and general conditions is tentative and is 

subject to increase or decrease at the time of finalization of the tender. The tenderer must quote 

full of the tendered quantity. Tenders with lesser quantity will not be entertained. 

30. In case the order is placed, the firm will have to dispatch the materials in the name of the 

consignee only and “self booking” will not be accepted. 

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31. The bidders should submit self-declaration Certificate, that the firm is not blacklisted from 

Central Govt / State Govt / Central or State Govt. undertakings/ Public Sector Undertaking etc. 

for the tendered item and also submit declaration Certificate that the firm is not related to any 

persons employed in the Board or his/her close family member/blood relations / proxies. 

32. Contract Form: 

The successful tenderers will have to execute contract agreement in the Board’s proforma prior to 

the placement of the purchase order. The contract agreement is to be executed on Rs. 200.00 non 

-judicial stamp paper. 

33. Extension Order: 

In the event of an order being placed on the tenderer, the tenderer requested to give his 

concurrence that he is willing to accept additional order on the same terms and conditions if the 

extension order is placed by Board within 12 (twelve) month from the date of acceptance/ 

placement of order. Bidder should submit an undertaking that they will supply additional 

quantity, if required by Board on same rate, terms and conditions, if extension order is placed 

within 12 month from the date of acceptance/ placement of order. 

34. Tolerance of Electrical Performance: 

Tolerance shall be according to relevant I.S.S. unless & otherwise stated in technical 

specification. 

35. Packing: 

Materials shall be delivered suitably packed. Although method of packing is left to the discretion 

of the manufacturer it should be robust enough for rough handling that may be occasioned during 

transportation by Rail/ Road. Further it is to clarify here that all the charges towards packing, 

forwarding, loading and unloading etc. shall be borne by the supplier. 

36 Drawing & design of item: 

Drawing and design of item offered duly signed with firm seal should accompany the tender. 

Tenderer must furnish complete design details, dimensional details & drawing indicating the 

internal arrangement in addition to a drawing indicating outside dimensions and method of 

fixation of fittings etc. The tenderer shall submit design details supported by type test report of 

the manufactured item. The Board reserves the right to reject the tenders if design parameters are 

considered qualitatively inferior or prefer, the tenders whose design parameters are qualitatively 

considered better. 

However, due opportunity to be heard will be given to bidders before taking decision in this 

regard. 

37. Type Test Certificate: 

i) Tenderers must submit attested/ certified copy of complete volume of type test 

(ii) 

certificates (short ckt & Lightning Impulse withstand voltage test) as per relevant ISS 

issued from CPRI / ERDA, Vadodara / National Test House Govt. of India, only for the 

tendered item, failing which the tender shall be rejected. The copy of test certificates must 

contain approved drawings, test report no & date, name of test, name of material, rating, 

transformer serial no etc. 

The submitted type-test reports must be in conformity to the technical specification of this 

NIT, failing which, offer will be rejected. 

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(iii) Specification (GTP) of the offered transformer must conform to the specification of the 

NIT, failing which the offer will be rejected. 

(iv) If the offered item [Guaranteed Technical Particulars (GTP)] is not proto-type of type tested 

design but conforming the technical specification of NIT, then one transformer will randomly be 

selected and sealed by the Inspecting Authority of JSEB, at the time of pre-despatch inspection, from 

the manufactured and offered 1 st lot and the tenderer would have to get this transformer type tested at 

CPRI at their own cost. In such case 90% (ninety percent) payment of ordered value shall be made 

only after adherence of clause # 27 of tender and balance 10% (ten percent) payment shall be released 

after submission of successful type test reports. In case of failure of type-test, order will be cancelled 

for entire quantity & BG submitted at the time of payment shall be encashed and firm will be allowed 

to take back entire supplied transformers against above order at their cost. If offered item is proto type 

of type tested design, then fresh type test is not required, as offered design is already type-tested. 

38. Bank Guarantee for repairs of equipments / materials at the supplier’s works: 

In case the equipment fails, within the guarantee period and the same is required to be taken back 

to the supplier’s factory, the same shall be covered up by suitable Bank Guarantee of any 

Nationalised Bank of equivalent cost of equipment for period required for replacement. Further 

Bank Guarantee shall be furnished by the supplier within one week’s time on hearing from the 

consignees. He shall not lift the damaged/rejected equipment from our store unless the approval 

of acceptance of Bank Guarantee is received from our Deputy Director of Accounts (HQ). 

39. Guarantee Period: 

The materials shall be guaranteed for satisfactory performance and against defective or low 

quality materials and bad workmanship for minimum 24 months from the date of commissioning 

or minimum 30 months from the date of delivery in stores, whichever is earlier. If during the 

guarantee period the goods are found defective or defects observed in service, the same will be 

replaced/ repaired by the supplier free of all the charge within one month on receipt of intimation. 

In case defective stores/ materials are not replaced / rectified as per the above guarantee clause, 

the Board shall recover an equivalent amount plus 15% supervision charges from any of the bills/ 

Bank Guarantee. 

40. BEE Enrollment Certificate: 

Bidder must submit enrollment certificate of Bureau of Energy Efficiency (BEE), New Delhi with the 

offer for manufacturing 03 star rating 63 KVA Distribution Transformer valid on the due date of 

tender (i.e., on the date of opening of part-I), failing which offer will be rejected. 

However the SSI unit of Jharkhand, registered for the tendered item, who submits 

copy of type test report as per NIT & whose type test report conforms to the technical 

specification of NIT and also submit copy of applied for certificate of BEE with the offer, is 

allowed to submit final BEE enrollment certificate of tendered item, before opening of price 

part, failing which their offer of price part will not be opened. However, such relaxation does 

not absolve them from any other contractual obligation, of NIT, what so ever. 

41. Re-inspection Charge: 

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Re-inspection charges as applicable shall be leviable in case it is found at the time of inspection at 

the works of the bidder that: 

a) The material /item/equipments was not ready for inspection and the inspection notice given 

by supplier was fictitious. 

b) Quantity offered for inspection is short by more than 50% from the quantity in the inspection 

call. 

c) Inspection is not arranged / not got carried out due to any reason an account of supplier. 

d) Material/ item/equipments is found not confirming to provisions of Purchase order/ GTP/ 

relevant BIS and thus rejected by inspecting officer. 

e) Manufacturing defects are observed during physical/ visual inspection/ checking. 

f) Quantity of item not found as per provisions of Purchase order. 

42. Termination of Contract: 

Note: a) 

Or 

Or 

In case the contractor/ supplier fails to deliver the materials or any consignment there of within 

contracted period of delivery or in case the materials are found not in accordance with the 

prescribed specification the Board shall exercise its discretionary power either: 

A) To recover from the supplier the damages as provided in the penalty of general conditions 

of tender for supply under clause 11. 

Or 

B) To Purchase elsewhere after giving due notice to the supplier on account and at the risk & 

cost of supplier such material not so delivered or other of similar description without 

canceling the contract in respect of consignment not yet due for delivery. 

C) To cancel the contract reserving Board’s right to recover damages. 

Or 

Notwithstanding the powers, under (a), (b), (c) referred above are in addition to the rights 

and remedy available to this Board under the General Law of India relating to contracts. 

In the event of risk purchase of stores of similar description, the option of the Board shall 

be final. In the event of action taken under (a) or (b) above, the supplier shall be liable for 

any loss which the Board sustain on the account but the supplier shall not be entitled to 

any saving on such purchases made against default. 

b) The decision of the Board shall be final as regards the acceptability of the stores 

supplied by the supplier on the Board shall not be required to give any reason in writing 

or otherwise at any time for the rejection of the materials. 

43. No documents submitted by bidders after opening of the tender (Part-I) on their own shall be 

accepted, unless and until asked for. 

44. The tenderer must get all documents inclusive of their covering letter PAGINATED and 

INDEXED and mention their number in the covering letter in WORDS. Also all the documents 

12

MUST bear the signature of the person who signed in the covering letter followed with the stamp 

of the tenderer. Overwriting / cut mark / use of whitener must not be done in all documents; 

otherwise the offer of the bidder may stand cancelled. 

45. The Board reserves the right to reject the lowest or any of the tender either in whole or in part without 

assigning any reason. 

46. Factory Inspection: 

Board’s officer/ authorized representative may inspect the factory regarding availability of adequate 

manufacturing and testing facilities for producing quality materials in case tenderers being considered 

for placement of order by the Board. 

47. General: 

Please again note that in incomplete offer not having specific comments on all the points of our 

specification and not supported by various information desired in our specifications shall be 

rejected out-right and no further correspondence shall be made with the supplier in respect of 

their offer which causes delay in finalizing the tender. 

48. Governing Language: 

The Contract shall be written in English or Hindi and shall be interpreted in accordance with the 

laws of the union of India. 

49. Jurisdiction of Court: 

The civil court Ranchi shall alone have an exclusive jurisdiction to decide any difference/ 

dispute/ cases for and against JSEB/ Contractors/ Suppliers arising out of or in respect of the NIT, 

or contract agreement, or Purchase order. 

50. The Board reserves the right to distribute the materials among successful bidders depending upon the 

offered delivery schedule as per the requirement. 

51. The Board reserves the right to cancel full or part of the awarded contract without assigning any 

reason of those firms which will be found defaulter for delay in supply of materials or his supply 

or his supply sub-standard quality of the materials or whose design parameters are considered 

technically inferior. 

52. The Board reserves the right to change/enlist/delete the specification/GTP of NIT till before 

opening of part-I, for which, bidder will be given due opportunity for submission of their fresh 

bids/revised bids. 

Enclosure - 

(i) 

(ii) 

(iii) 

(iv) 

(v) 

(vi) 

(vii) 

(viii) 

(ix) 

(x) 

(xi) 

(xii) 

(xiii) 

Annexure ‘A’, 

Annexure ‘B’, 

Annexure ‘C’ 

Annexure ‘D’ 

Annexure ‘E’ 

Annexure ‘F’ 

Annexure ‘G’ 

Annexure ‘H’ 

Annexure ‘I’ 

Annexure ‘J’ 

Annexure ‘k’ 

Annexure ‘L’ 

Annexure ‘M’ 

Electrical Superintending Engineer (Purchase) 

JSEB Ranchi 

13



FAX NO. 0651 – 2400799 

Annexure – ‘A’ 


The following conditions are to be strictly fulfilled by the firm while submitting their tenders:- 

1. Tenders not accompanied by the prescribed earnest money will be rejected outright. The firm 

registered with DGS&D/ Registered with NSIC under single point registration /Permanently 

registered with department of Industries, Govt. of Jharkhand and also registered with NSIC 

for manufacture of the item/ Undertaking of Govt. of Jharkhand/ Govt. of India are however 

exempted but for the proof of registration certified or attested copy should be submitted 

together with documentary evidence of validity period on the due date of tender alongwith 

the tender. Otherwise tender shall be liable to be rejected. 

2. Tenderer has to accept the Guarantee clause, penalty clause, payment terms and security 

clause as per the terms and conditions of the tender otherwise tender will be considered as 

invalid. 

3. The offers, which are not kept valid for acceptance, for at least 90 days from the date of 

opening of tenders, will be rejected. 

4. Conditional/ Incomplete tenders which do not contain full details, technical particulars, 

literature test certificates, performance report, price of all equipments delivery period etc. will 

be rejected, GTP must be filled up item wise. Incomplete or mentioning ‘as per ‘IS’ shall not 

be acceptable. 

5. The prices are specifically asked to be submitted as FOR destination and are not so furnished, 

the tender shall not be considered as valid and will be rejected. 

6. Tender, which is not submitted in the Board’s Prescribed proforma shall be rejected. Any 

additional particulars can be furnished in the accompanying letter of Statement. 

7. Tender received in this Office after the due date and time shall be rejected. 

8. Prices must be indicated bold in figure and Words failing which the tender may be rejected. 

9. Tenderers have to quote FIRM price only. 

10. Drawing of equipments must be submitted, failing which the tender may be liable for 

rejected. 

11. 63 kVA distribution transformer are to be delivered along with suitable 3 (three) nos. of 

9 kV /11 kV Metal oxide Lightning Arresters with G I earth strip fixed with the transformer. 

Tenderer must quote the price of 63 kVA distribution transformer along with the cost of the 

lightning arresters. 

12. Specification of the offered item must conform to the technical specification of NIT, failing 

which the offer shall be rejected. 

13. Tenderers have to submit their Bid in SOFT copy (CD-R-Type) also besides Hard copy. 

Price part will be in Hard copy only in duly sealed envelope as said earlier; price part given 

in CD will be outrightly rejected. In case of any discrepancies observed between HARD 

copy & SOFT copy of bid documents, content of Hard copy shall prevails. 

14 

Electrical Superintending Engineer (PUR) 

JSEB, Ranchi.



FAX NO. 0651 – 2400799 

Annexure ‘B’ 


STANDARD TECHNICAL SPECIFICATION 

FOR 

OUTDOOR TYPE THREE PHASE OIL IMMERSED 

(INCLUDING COMPLETELY SELF PROTECTED) 

DISTRIBUTION TRANSFORMERS, type tested, 03 

star,11kV/433V, Al Wd, CRGO core, 63 KVA RATING 

15

TECHNICAL SPECIFICATION FOR OUTDOOR TYPE 

DISTRIBUTION TRANSFORMERS 11 kV/433v, 63 kVA rating 

1 SCOPE: 

1.1 This specification covers design, engineering, manufacture, assembly, stage testing, inspection and 

testing before supply and delivery at site of oil immersed, naturally cooled 3 phase 11 kV/433 V 

distribution transformers for outdoor use. 

1.2 It is not the intent to specify completely herein all the details of the design and construction of 

equipment. However the equipment shall conform in all respects to high standards of engineering, 

design and workmanship and shall be capable of performing in continuous commercial operation, in a 

manner acceptable to the purchaser, who will interpret the meanings of drawings and specification and 

shall have the power to reject any work or material which, in his judgment is not in accordance 

therewith. The offered equipment shall be complete with all components necessary for their effective 

and trouble free operation. Such components shall be deemed to be within the scope of bidder's supply 

irrespective of whether those are specifically brought out in this specification and / or the commercial 

order or not. 

1.3 The transformer and accessories shall be designed to facilitate operation, inspection, maintenance and 

repairs. The design shall incorporate every precaution and provision for the safety of equipment as well 

as staff engaged in operation and maintenance of equipment. 

1.4 All outdoor apparatus, including bushing insulators with their mountings, shall be designed so as to 

avoid any accumulation of water. 

2 STANDARD RATINGS: 

2.1 The standard ratings shall be 63 KVA for 11 kV distribution transformers. 

3 STANDARDS: 

3.1 The materials shall conform in all respects to the relevant Indian/International Standards, with latest 

amendments thereof unless otherwise specified herein. Some of them are listed below: 

Indian 

Standard 

Title 

IS -2026 Specification for Power Transformers IEC76 

IS -1180 

Outdoor distribution Transformer up to and including 100KVA 

16 

International and 

Internationally recognized 

standards 

IS-335 Specification for Transformer Oil BS 148, D-1473, D-1 533-1 

934 IEC Pub 296 

IS- 5 

Specification for colors for ready mixed paints 

IS -104 

IS - 2099 

IS - 649 

IS -4257 

IS -7421 

Ready mixed paint, brushing zinc chromate, priming 

Specification for high voltage porcelain bushing 

Testing for steel sheets and strips and magnetic circuits 

Dimensions for clamping arrangements for bushings 

Specification for Low Voltage bushings 

IS - 3347 Specification for Outdoor Bushings DIN 42531 to 33 

IS - 5484 Specification for Al Wire rods ^" ASTM B-233 

IS - 9335 Specification for Insulating Kraft Paper IEC 554 

IS -1576 Specification for Insulating Press Board. IEC 641

IS - 6600 Guide for loading of oil Immersed Transformers I EC 76 

IS - 2362 

IS -6162 

IS -6160 

IS- 5561 

IS -6103 

IS - 6262 

Determination of water content in oil for porcelain bushing of 

transformer 

Paper covered aluminium conductor 

Rectangular Electrical conductor for electrical machines 

Electrical power connector 

Testing of specific resistance of electrical insulating liquids 

Method of test for power factor and dielectric constant of 

electrical insulating liquids 

IS - 6792 

IS -10028 

Determination of electrical strength of insulating oil 

Instazllation and maintenance of transformers. 

3.2 Material conforming to other internationally accepted standards, which ensure equal or better quality 

than the standards mentioned above, would also be acceptable. In case the bidders who wish to offer 

material conforming to other standards, the bidder shall clearly bring out the salient points of 

difference between the standards adopted and the specific standards in relevant schedule. Four copies 

of such standards with authentic English translations shall be furnished along with the offer. 

However, the decision of Board, in this regard, shall be final. 

4. SERVICE CONDITIONS: 

4.1 The Distribution Transformers to be supplied against this Specification shall be suitable for 

satisfactory continuous operation under the following climatic conditions as per IS 2026 (Part -1). 

i Location : At various locations in the State of Jharkhand 

ii Maximum ambient air temperature (°C) : 50 

iii Minimum ambient air temperature (°C) : -5 

iv Maximum average daily ambient : 40 

air temperature (°C) 

v Maximum yearly weighted average : 32 

ambient temperature(°C) 

vi Maximum altitude above mean : 1000 meters 

sea level (Metres) 

Note: 

1 The equipment shall generally be for use in moderately hot and humid tropical climate, conducive to 

rust and fungus growth unless otherwise specified. 

5 PRINCIPAL PARAMETERS: 

5.1 The transformers shall be suitable for outdoor installation with three phase, 50 Hz, 11 kV system in 

which the neutral is effectively earthed and they should be suitable for service with fluctuations in 

supply voltage upto 12.5% to minus 12.5%. 

5.2 The transformers shall conform to the following specific parameters : 

SI.No. Item 11 kV Distribution Transformers 

1 System voltage (max.) 12 kV 

2 Rated voltage HV 11 kV 

3. Rated voltage LV 433 - 250 V* 

17

4. Frequency 50 Hz +/- 5%* 

5 No. of Phases Three 

6 Connection HV Delta 

7 Connection LV Star (Neutral brought out) 

8. Vector group Dyn-11 

9. Type of cooling ONAN 

10. Continuous capacity 63 KVA 

Audible sound levels (decibels) at rated voltage and frequency for liquid immersed distribution 

transformers shall be as below (NEMA Standards): 

kVA rating Audible sound levels (decibels) 

51-100 51 

6 TECHNICAL REQUIREMENTS: 

6.1.1 CORE MATERIAL – CRGO 

6.1.2 CRGO Material 

6.1.2.1 The core shall be stack type of high grade cold rolled grain oriented annealed steel lamination 

having low loss and good grain properties, coated with hot oil proof insulation, bolted together and 

to the frames firmly to prevent vibration or noise. The core shall be stress relieved by annealing 

under inert atmosphere if required. The complete design of core must ensure permanency of the 

core loss with continuous working of the transformers. The value of the maximum flux density 

allowed in the design and grade of lamination used shall be clearly stated in the offer. 

6.1.2.2 The bidder should offer the core for inspection and approval by the purchaser during manufacturing 

stage. 

6.1.2.3 The transformers core shall be suitable for over fluxing (due to combined effect of voltage and 

frequency) up to 12.5% without injurious heating at full load conditions and shall not get saturated. 

The bidder shall furnish necessary design data in support of this situation. 

6.1.2.4 No-load current shall not exceed 3% of full load current and will be measured by energising the 

transformer at 433 volts, 50 Hz on the secondary. Increase of voltage of 433 volts by 12.5% shall 

not increase the no-load current by 6% (maximum) of full load current. 

7. WINDINGS: 

7.1 Material: 

7.1.1 HV and LV windings shall be wound from Super Enamel covered /Double Paper covered , 

aluminium conductor /strip. 

7.1.2 LV winding shall be such that neutral formation will be at top. 

7.1.3 The winding construction of single HV coil wound over LV coil is preferable 

7.1.4 Inter layer insulation shall be Nomex /Epoxy dotted Kraft Paper. 

7.1.5 Current density for HV and LV winding should not be more than 1.6 Ampere per sq mm for 

Aluminium Conductor. 

7.1.6 The core/coil assembly shall be securely held in position to avoid any movement under short circuit 

conditions. 

18

7.1.7 Joints in the winding shall be avoided. However, if jointing is necessary the joints shall be properly 

8 TAPS: 

brazed and the resistance of the joints shall be less than that of parent conductor. In case of foil 

windings, welding of leads to foil can be done within the winding. 

8.1 No tapping shall be provided for transformers up to 200 kVA rating. 

9. OIL: 

9.1 The insulating oil shall comply with the requirements of IS 335 or BS 148. 

Use of recycled oil is not acceptable. The specific resistance of the oil shall not be less than 2.5 

X10 12 ohm-cm at 27 °C when tested as per IS 6103. 

9.2 Oil shall be filtered and tested for break down voltage (BDV) and moisture content before filling. 

9.3 The oil shall be filled under vacuum. 

9.4 The design and all materials and processes used in the manufacture of the transformer, shall be such 

as to reduce to a minimum the risk of the development of acidity in the oil. 

10 INSULATION LEVELS: 

SI. No. Voltage (kV) 

Impulse Voltage (kV 

Peak) 

1 0.433 - 3 

2 11 95 28 

Power Frequency Voltage 

(kV) 

11 LOSSES: 

11.1 The bidder shall guarantee individually the no-load loss and load loss without any positive tolerance. 

The bidder shall also guarantee the total losses at 50% and 100% load condition (at rated voltage and 

frequency and at 75 °C). 

11.2 The maximum allowable losses at rated voltage and rated frequency permitted at 75 °C for 11/0.433 

kV transformers can be chosen by the utility from the values of 3 star rating as indicated below: 

Rating 

(kVA) 

Voltage Ratio 

3 Star 

Max. Losses at 50% loading 

(Watts) 

11 000/433 -250V 63 380 1250 


(Watts) 

Bids with higher losses than the above specified values would be treated as non-responsive. 

However, the manufacturer can offer losses less than above. 

12. TOLERANCES: 

12.1 No positive tolerance shall be allowed on the maximum losses displayed on the label for both 

50% and 100% loading values. 

13. PERCENTAGE IMPEDANCE: 

13.1 The value of impedance of transformers at 75 °C shall be 4.5% with tolerance in accordance with IS 

2026. 

14. Temperature rise: The temperature rise over ambient temp. (50 Degree Centigrade) shall not exceed 

the limits given below: 

14.1 Top oil temperature rise measured by thermometer : 35 °C 

19

14.2 Winding temperature rise measured by resistance method : 40 °C 

Bids not meeting the above limits of temperature rise will be treated as non-responsive. 

14.3 The transformer shall be capable of giving continuous rated output without exceeding the specified 

temperature rise. Bidder shall submit the calculation sheet in this regard. 

15. PENALTY FOR NON PERFORMANCE: 

15.1 During testing at supplier's works if it is found that the actual measured losses are more than 

the values quoted by the bidder, the purchaser shall reject the transformer and he shall also 

have the right to reject the complete lot. 

15.2 Purchaser shall reject the entire lot during the test at supplier's works, if the temperature rise 

exceeds the specified values. 

15.3 Purchaser shall reject any transformer during the test at supplier's works, if the impedance 

values differ from the guaranteed values including tolerance. 

16. INSULATION MATERIAL: 

16.1 Electrical grade insulation epoxy dotted Kraft Paper/Nomex and pressboard of standard make or any 

other superior material subject to approval of the purchaser shall be used. 

17. TANK 

16.2 All spacers, axial wedges / runners used in windings shall be made of pre-compressed Pressboardsolid, 

conforming to type B 3.1 of IEC 641-3-2. In case of cross-over coil winding of HV all spacers 

shall be properly sheared and dovetail punched to ensure proper locking. All axial wedges / runners 

shall be properly milled to dovetail shape so that they pass through the designed spacers freely. 

Insulation shearing, cutting, milling and punching operations shall be carried out in such a way, that 

there should not be any burr and dimensional variations. 

17.1 The internal clearance of tank shall be such, that it shall facilitate easy lifting of core with coils from 

the tank without dismantling LV bushings. 

17.2 All joints of tank and fittings shall be oil tight and no bulging should occur during service. 

17.3 Inside of tank shall be painted with varnish/hot oil resistant paint. 

17.4 The top cover of the tank shall be slightly sloping to drain rain water. 

17.5 The tank plate and the lifting lugs shall be of such strength that the complete transformer filled with 

oil may be lifted by means of lifting shackle. 

17.6 Manufacturer should carry out all welding operations as per the relevant ASME standards and submit 

a copy of the welding procedure and welder performance qualification certificates to the customer. 

17.2 PLAIN TANK: 

17.2.1 The transformer tank shall be of robust construction rectangular/octagonal/round/ elliptical in shape 

and shall be built up of electrically tested welded mild steel plates of thickness of 5.00 mm for the 

bottom and top and not less than 3.15 mm for the sides for distribution transformers upto and 

including 100 kVA. 

No negative tolerance than the above prescribed limits in the tank 

thickness shall be allowed. 

17.2.2 In case of transformers of 100 kVA and below, there shall be no joints at corners and there shall not 

be more than 2 joints in total. 

17.2.3 Under operating conditions the pressure generated inside the tank should not exceed 0.4 kg/ sq. cm 

20

positive or negative. There must be sufficient space from the core to the top cover to take care of oil 

expansion. The space above oil level in the tank shall be filled with dry air or nitrogen conforming to 

commercial grade of IS 1747. 

17.2.4 The tank shall be reinforced by welded flats on all the outside walls on the edge of the tank. 

17.2.5 Permanent deflection: The permanent deflection, when the tank without oil is subjected to a vacuum 

of 525 mm of mercury for rectangular tank and 760 mm of mercury for round tank, shall not be more 

than the values as given below: 

Horizontal length of flat plate 

Permanent deflection 

(All figures in mm) 

Up to and including 750 5.0 

751 to 1250 6.5 

1251 to 1750 8.0 

1751 to 2000 9.5 

2001 to 2250 11.0 

2251 to 2500 12.0 

2501 to 3000 16.0 

Above 3000 19.0 

17.2.6 The tank shall further be capable of withstanding a pressure of 0.8 kg/ sq.cm (g) and a vacuum of 

0.7 kg/sq.cm (g) without any deformation. 

17.2.7 The radiators can be tube type or fin type or pressed steel type to achieve the desired cooling to 

limit the specified temperature rise. 

18 CONSERVATOR: 

18.1 The conservator shall be provided on transformers of rating 63 kVA and above for plain tank. 

18.2 When a conservator is provided, oil gauge and the plain or dehydrating breathing device shall be 

fitted to the conservator which shall also be provided with a drain plug and a filling hole [32 mm 

(1%")] normal size thread with cover. In addition, the cover of the main tank shall be provided 

with an air release plug. 

18.3 The dehydrating agent shall be silica gel. The moisture absorption shall be indicated by a change 

in the colour of the silica gel crystals which should be easily visible from a distance. Volume of 

breather shall be suitable for 500g of silica gel conforming to IS 3401 for transformers upto 200 

kVA. 

18.4 The capacity of a conservator tank shall be designed keeping in view the total quantity of oil and 

its contraction and expansion due to temperature variations. The total volume of conservator shall 

be such as to contain 10% quantity of the oil. Normally 3% quantity the oil shall be contained in 

the conservator. 

18.5 The cover of main tank shall be provided with an air release plug to enable air trapped within to be 

released, unless the conservator is so located as to eliminate the possibility of air being trapped 

within the main tank. 

18.6 The inside diameter of the pipe connecting the conservator to the main tank should be within 20 to 

21

50 mm and it should be projected into the conservator so that its end is approximately 20 mm 

above the bottom of the conservator so as to create a sump for collection of impurities. The 

minimum oil level (corresponding to -5 °C) should be above the sump level. 

19 SURFACE PREPARATION AND PAINTING: 

19.1 GENERAL 

19.1.1 All paints, when applied in a normal full coat, shall be free from runs, sags, wrinkles, patchiness, 

brush marks or other defects. 

19.1.2 All primers shall'be well marked into the surface, particularly in areas where painting is evident 

and the first priming coat shall be applied as soon as possible after cleaning. The paint shall be 

applied by airless spray" according to manufacturer's recommendations. However, where ever 

airless spray is not possible, conventional spray be used with prior approval of purchaser. 

19.2 CLEANING AND SURFACE PREPARATION: 

19.2.1 After all machining, forming and welding has been completed, all steel work surfaces shall be 

thoroughly cleaned of rust, scale, welding slag or spatter and other contamination prior to any 

painting. 

19.2.2 Steel surfaces shall be prepared by shot blast cleaning (IS9954) to grade Sq. 2.5 of ISO 8501 -1 or 

chemical cleaning including phosphating of the appropriate quality (IS 3618). 

19.2.3 Chipping, scraping and steel wire brushing using manual or power driven tools cannot remove 

firmly adherent mill-scale. These methods shall only be used where blast cleaning is impractical. 

Manufacturer to clearly explain such areas in his technical offer 

19.3 PROTECTIVE COATING: 

19.3.1 As soon as all items have been cleaned and within four hours of the subsequent drying, they shall 

be given suitable anti-corrosion protection. 

19.4 PAINT MATERIAL: 

19.4.1 Following are the types of paint which may be suitably used for the items to be painted at shop and 

supply of matching paint to site: 

Heat resistant paint (Hot oil proof) for inside surface 

19.4.2 For external surfaces one coat of thermo setting powder paint or one coat of epoxy primer 

followed by two coats of synthetic enamel/polyurethene base paint. These paints can be either air 

drying or stoving. 

19.4.3 For highly polluted areas, chemical atmosphere or for places very near to the sea coast, paint as 

above with one coat of high build Micaceous iron oxide (MIO) as an intermediate coat may be 

used. 

19.5 PAINTING PROCEDURE: 

19.5.1 All prepared steel surfaces should be primed before visible re-rusting occurs or within 4 hours, 

whichever is sooner. Chemical treated steel surfaces shall be primed as soon as the surface is dry 

and while the surface is still warm. 

19.5.2 Where the quality of film is impaired by excess film thickness (wrinkling, mud cracking or general 

softness) the supplier shall remove the unsatisfactory paint coating and apply another coating. As a 

general rule, dry film thickness should not exceed the specified minimum dry film thickens by 

more than 25%. 

22

19.6 DAMAGED PAINTWORK: 

19.6.1 Any damage occurring to any part of a painting scheme shall be made good to the same standard 

of corrosion protection and appearance as that was originally applied. 

19.6.2 Any damaged paint work shall be made good as follows: 

19.6.2.1 The damaged area, together with an area extending 25 mm around its boundary, shall be cleaned 

down to bare metal. 

19.6.2.2 A priming coat shall be immediately applied, followed by a full paint finish equal to that originally 

applied and extending 50 mm around the perimeter of the original damage. 

19.6.2.3 The repainted surface shall present a smooth surface. This shall be obtained by carefully 

chamfering the paint edges before and after priming. 

19.7 DRY FILM THICKNESS: 

19.7.1 To the maximum extent practicable the coats shall be applied as a continuous film of uniform 

thickness and free of pores. Overspray, skips, runs, sags and drips should be avoided. The different 

coats may or may not be of the same colour. 

19.7.2 Each coat of paint shall be allowed to harden before the next is applied as per manufacturer's 

recommendation. 

19.7.3 Particular attention must be paid to full film thickness at the edges. 

19.7.4 The requirements for the dry film thickness (DFT) of paint and the materials to be used shall be as 

given below: 

SI. No. Paint type Area to be painted No. of 

coats 

Total dry film 

thickness (min.) 

(microns) 

1. Thermo setting powder paint inside outside 01 01 30 60 

2. 

Liquid paint 

a) Epoxy (primer) outside 01 30 

b) P.U. Paint (Finish coat) outside 02 25 each 

c) Hot oil paint/ Varnish inside 01 35/10 

19.8 TESTS FOR PAINTED SURFACE: 

19.8.1 The painted surface shall be tested for paint thickness. 

19.8.2 The painted surface shall pass the cross hatch adhesion test and impact test as acceptance tests and 

Salt spray test and Hardness test as type test as per the relevant ASTM standards. 

Note Supplier shall guarantee the painting performance requirement for a period of not less than 5 year 

20 BUSHINGS: 

20.1 The bushings shall conform to the relevant standards specified and shall be of outdoor type. The 

bushing rods and nuts shall be made of brass material 12 mm diameter for both HT and LT 

bushings. The bushings shall be fixed to the transformers on side with straight pockets and in the 

same plane or the top cover for transformers above 100 KVA.. For transformers of 100 kVA and 

below the bushing can be mounted on pipes. The tests as per latest IS 2099 and IS 7421' shall be 

conducted on the transformer bushings. 

20.2 For 11 kV, 17.5 kV class bushings and for 0.433 kV, 1.1 kV class bushings shall be used. 

20.3 Bushing can be of porcelain/epoxy material. Polymer insulator bushings conforming with relevant I 

EC can also be used. 

20.4 Bushings of plain shades as per IS 3347 shall be mounted on the side of the Tank / on top cover. 

23

20.5 Dimensions of the bushings of the voltage class shall conform to the Standards specified and 

dimension of clamping arrangement shall be as per IS 4257 

20.6 Minimum external phase to phase and phase to earth clearances of bushing terminals shall be as follows: 

Voltage 

Clearance 

Phase to phase 

Phase to earth 

11 kV 255 mm 140 mm 

LV 75 mm 40 mm 

20.7 Arcing horns shall be provided on HV bushings. 

20.8 Brazing of all inter connections, jumpers from winding to bushing shall have cross section larger 

than the winding conductor. All the Brazes shall be qualified as per ASME, section - IX. 

20.9 The bushings shall be of reputed make supplied by those manufacturers who are having 

manufacturing and testing facilities for insulators. 

20.10 The terminal arrangement shall not require a separate oil chamber not connected to oil in the main 

tank. 

21 TERMINAL CONNECTORS: 

21.1 The LV and HV bushing stems with provision of CSP/protective features as stipulated in cl # 27 

& 28 of technical specification shall be provided with suitable terminal connectors as per IS 5082 

so as to connect the jumper without disturbing the bushing stem. Connectors shall be with eye 

bolts so as to receive conductor for HV. Terminal connectors shall be type tested as per IS 5561. 

22 LIGHTNING ARRESTORS: 

22.1 9 kV, 5 kA metal oxide lightning arresters of reputed make conforming to IS 3070 Part-Ill, one 

number per phase shall be provided.(To be fitted under the HV bushing with Gl earth strip 25x4 

mm connected to the body of the transformer with necessary clamping arrangement) Lightening 

arrestors with polymer insulators in conformance with relevant IEC can also be used. 

23 TERMINAL MARKINGS: 

23.1 High voltage phase windings shall be marked both in the terminal boards inside the tank and on 

the outside with capital letter 1U, 1V, 1W and low voltage winding for the same phase marked by 

corresponding small letter 2u, 2v, 2w. The neutral point terminal shall be indicated by the letter 

2n. Neutral terminal is to be brought out and connected to local grounding terminal by an earthing 

strip. 

24 FITTINGS: 

24.1 The following standard fittings shall be provided : 

i Rating and terminal marking plates, non-detachable. 

ii Earthing terminals with lugs - 2 Nos. 

iii Lifting lugs for main tank and top cover 

iv Terminal connectors on the HV/LV bushings (For bare terminations only). 

v Thermometer pocket with cap -1 No. 

vi Air release device 

vii HV bushings - 3 Nos. 

viii LV bushings - 4 Nos 

24

ix 

x 

xi 

xii 

xiii 

xiv 

xv 

xvi 

xvii 

xviii 

xix 

Pulling lugs 

Stiffener 

Radiators - Number. and length may be mentioned (as per heat dissipation calculations)/ 

corrugations. 

9 kV, 5 kA lightning arresters on HT side - 3 No. 

Prismatic oil level gauge, 

Drain cum sampling valve, 

Top filter valve 

Oil filling hole having p. 1 - %" thread with plug and drain plug on the conservator. 

Silica gel breather 

Base channel 75x40 mm for up to 100 kVA, 460 mm long with holes to make them suitable for 

fixing on a platform or plinth. 

Pressure relief device or explosion vent. 

25 FASTENERS: 

25.1 All bolts, studs, screw threads, pipe threads, bolt heads and nuts shall comply with the appropriate 

Indian Standards for metric threads, or the technical equivalent. 

25.2 Bolts or studs shall not be less than 6 mm in diameter except when used for small wiring 

terminals. 

25.3 All nuts and pins shall be adequately locked. 

25.4 Wherever possible bolts shall be fitted in such a manner that in the event of failure of locking 

resulting in the nuts working loose and falling off, the bolt will remain in position. 

25.5 All ferrous bolts, nuts and washers placed in outdoor positions shall be treated to prevent 

corrosion, by hot dip galvanising, except high tensile steel bolts and spring washers which shall 

be electro-galvanised / plated. Appropriate precautions shall be taken to prevent electrolytic 

action between dissimilar metals. 

25.6 Each bolt or stud shall project at least one thread but not more than three threads through the nut, 

except when otherwise approved for terminal board studs or relay stems. If bolts and nuts are 

placed so that they are inaccessible by means of ordinary spanners, special spanners shall be 

provided. 

25.7 The length of the screwed portion of the bolts shall be such that no screw thread may form part of 

a shear plane between members. 

25.8 Taper washers shall be provided where necessary. 

25.9 Protective washers of suitable material shall be provided front and back of the securing screws. 

26 OVERLOAD CAPACITY 

26.1 The transformers shall be suitable for loading as per IS 6600. 

27 COMPLETELY SELF PROTECTED (CSP) TRANSFORMERS: 

27.1 CSP transformer is to be provided for ratings up to 200 kVA 

28 PROTECTION FEATURES: 

28.1 External Weather proof HV fuse on the HV side of transformer. 

28.1.1 The fuse is mounted normally inside of the primary bushing for the three phases and is connected 

to the high voltage winding through a terminal block. This has to protect that part of the electrical 

distribution system which is ahead of the distribution transformers from faults which occur inside 

25

the distribution transformer i.e., either in the windings or some other part of the transformer. It 

shall be ensured that this fuse does not blow for faults on the secondary side (LT side) of the 

transformer i.e., the blowing characteristics of the fuse and LT breaker shall be so coordinated 

such that the fuse shall not blow for any faults on the secondary side of the transformer beyond 

LT breakers and those faults shall be cleared by the LT breaker only. 

28.2 Externally weather proof Mounted LT Breaker on the LV Side of the Transformer: 

28.2.1 3 Pole LT circuit breaker: All LT faults after the breaker shall be cleared by this breaker. As such 

it shall be designed for perfect coordination with the HT fuse link. The bidder shall furnish the 

time / current characteristics of LT circuit breaker and 11 kV fuses for various current 

multiples. 

28.2.2 The two characteristics shall be drawn on the same sheet to indicate coordination between the 

circuit breaker and fuse. The bidder shall carry out coordination test as indicated above and this 

forms one of the tests for acceptance test. 

28.2.3 The breaker shall be coordinated thermally with the transformer design to follow closely the 

variations of oil temperature due to fluctuating loads and ambient temperatures. 

28.2.4 Arrangements shall be provided to enable the circuit breaker to be closed and opened 

manually standing on ground. 

28.2.5 The cross section of the current carrying parts of the breaker shall withstand the full load current 

at a current density not more than 2.5 A/sq. mm (for additional mechanical strength the area 

should be more). 

28.2.6 Rated short circuit breaking capacity of the breaker shall not be less than 2.5 kA. The circuit 

breaker shall confirm to IS 13947. 

29 LOAD MANAGEMENT SIGNAL LIGHT: 

29.1 A signal light shall be provided to give information about the loading condition of the 

transformer. It shall forewarn any overloading problem at the installation such that replacement of 

the existing transformer with a higher capacity transformer can be planned. The signal light 

mechanism shall not reset itself when the load drops from the overloaded condition. The signal 

light shall remain lighted once the signal light contacts close due to overload and can be turned 

off by manual operation. (The signal light shall not give indication for momentary overloading). 

Loading indication shall be available in adjustable steps of 10% starting from 70% to 110% 


30.1 9 kV, 5 kA metal oxide lightning arrestors Distribution class type of reputed make as per relevant 

standard, one number per phase shall be provided to be fitted under the HV bushing with Gl earth 

strip 25x4 mm connected to the body of the transformer with necessary clamping arrangement. 

26

31 TESTS: 

31.1 All the equipment offered shall be fully type tested 'by the bidder or his collaborator as per the 

relevant standards including the additional type tests. The type test must have been conducted on 

a transformer of same design at the time of bidding. The bidder shall furnish two sets of type test 

reports along with the offer. Offers without type test reports will be treated as non-responsive. 

31.2 Special tests other than type and routine tests, as agreed between purchaser and bidder shall also 

be carried out as per the relevant standards 

31.3 The requirements of site tests are also given in this clause. 

31.4 The test certificates for a!! routine and type tests for the transformers and also for the bushings 

and transformer oil shall be submitted with the bid. 

31.5 The procedure for testing shall be in accordance with IS1180/2026 as the case may be except for 

temperature rise test. 

31.6 Before despatch each of the completely assembled transformers shall be subjected to the routine 

tests at the manufacturer's works. 

32 ROUTINE TESTS 

32.1 Ratio, polarity, phase sequence and vector group. 

32.2 No Load current and losses at service voltage and normal frequency. 

32.3 Load losses at rated current and normal frequency 

32.4 Impedance voltage test. 

32.5 Resistance of windings at each tap, cold (at or near the test bed temperature). 

32.6 Insulation resistance. 

32.7 Induced over voltage withstand test. 

32.8 Separate source voltage withstand test. 

32.9 Neutral current measurement-The value of zero sequence current in the neutral of the star winding 

shall not be more than 2% of the full load current. 

32.10 Oil samples (one sample per lot) to comply with IS 1866. 

32.11 Measurement of no load losses and magnetizing current at rated frequency and 90%, 100% and 

110% rated voltage. 

32.12 Pressure and vacuum test for checking the deflection. 

33 TYPE TESTS 

33.1 (i) Tenderers must submit attested / certified copy of complete volume of type test certificates 

(short ckt & Lightning Impulse withstand voltage test) as per relevant ISS issued from CPRI / 

ERDA, Vadodara / National Test House Govt. of India, only for the tendered item, failing which 

the tender shall be rejected. The copy of test certificates must , contain approved drawings, test 

report no & date, name of test, name of material, rating transformer serial no etc. 

(ii) 



(iii) 

Specification of the offered transformer (GTP) must conform the specification of the NIT, 

failing which the offer will be rejected. 

(iv) 

If the offered item [Guaranteed Technical Particulars (GTP)] is not proto-type of type 

tested design but conforming the technical specification of NIT, then one unit will randomly be 

selected and sealed by the Inspecting Authority of JSEB, at the time of pre-despatch inspection, 

from the manufactured and offered lot and the tenderer would have to get this unit type tested 

afresh at CPRI at his own cost. In such case 90% (ninety percent) payment of ordered value shall 

be made and balance 10% (ten percent) payment shall be released after submission of successful 

type test reports. If offered item is proto type of type tested design, fresh type test is not required. 

33.2 In addition to the above type tests following additional tests may be conducted at CPRI, if Board 

desires, to do so, at the cost of the supplier. 

a. Temperature rise test for determining the maximum temperature rise after continuous full load 

run. The ambient temperature and time of test should be stated in the test certificate 

27

. Air Pressure Test: As per IS - 1180. 

c. Magnetic Balance Test. 

d. Un-balanced current test: The value of unbalanced current indicated by the ammeter shall not be 

more than 2% of the full load current. 

e. Noise-level measurement. 

f. Measurement of zero-phase sequence impedance 

g. Measurement of Harmonics of no-load current for vacuum shall be tested at an internal pressure 

of 0.35 kg per sq cm absolute (250 mm of Hg) for one hour. The permanent deflection of flat 

plates after the vacuum has been released shall not exceed the values specified below: 

Horizontal length of flat plate (in mm) 

Permanent deflection (in mm) 

Upto and including 750 5.0 

751 to 1250 6.5 

1251 to 1750 8.0 

1751 to 2000 9.5 

2001 to 2250 11.0 

2251 to 2500 12.0 

2501 to 3000 16.0 

Above 3000 19.0 

h. Transformer tank together with its radiator and other fittings shall be subjected to pressure 

corresponding to twice the normal pressure or 0.35 kg / sq.cm which ever is lower, measured at the 

base of the tank and maintained for an hour. The permanent deflection of the flat plates after the 

excess pressure has been released, shall not exceed the figures for vacuum test. 

i. Pressure relief device test: The pressure relief device shall be subject to increasing fluid pressure. It 

shall operate before reaching the test pressure as specified in the above class. The operating 

pressure shall be recorded. The device shall seal-off after the excess pressure has been released. 

j. It may also be noted that the purchaser reserves the right to conduct short circuit test and impulse 

voltage withstand test in accordance with the IS, afresh on each ordered rating at purchaser cost, 

even if the transformers of the same rating and similar design are already tested. This test shall be 

carried out on a transformer to be selected by the purchaser either at the manufacturer's works when 

they are offered in a lot for supply or randomly from the supplies already made to purchaser's 

stores. The findings and conclusions of these tests shall be binding on the supplier. 

34. ACCEPTANCE TESTS: 

34.1 At least 10% transformers of the offered lot (minimum of one) shall be subjected to the following 

routine/ acceptance test in presence of purchaser's representative at the place of manufacture before 

dispatch without any extra charges. The testing shall be carried out in accordance with 18:1180 and 

IS:2026. 

34.2 Checking of weights, dimensions, fitting and accessories, tank sheet thickness, oil quality, material, 

finish and workmanship as per GTP and contract drawings. 

34.3 Physical verification of core coil assembly and measurement of flux density of one unit of each 

rating, in every inspection with reference to short circuit test report 

34.4 Temperature rise test on one unit of the total ordered quantity 

35 TESTS AT SITE: 

28

The purchaser reserves the right to conduct all tests on transformer after arrival at site and the 

manufacturer shall guarantee test certificate figures under actual service conditions. 

36. INSPECTION: 

36.1 In respect of raw material such as core stampings, winding conductors, insulating paper and oil, 

supplier shall use materials manufactured/supplied by standard manufacturers and furnish the 

manufacturers' test certificate as well as the proof of purchase from these manufacturers (excise 

gate pass) for information of the purchaser. The bidder shall furnish following documents along 

with their offer in respect of the raw materials: 

i. Invoice of supplier. 

ii. 

iii. 

iv. 

Mill's certificate 

Packing list. 

Bill of landing, 

v. Bill of entry certificate by custom. 

37 INSPECTION AND TESTING OF TRANSFORMER OIL: 

37.1 To ascertain the quality of the transformer oil, the original manufacturer's tests report should be 

submitted at the time of inspection. Arrangements should also be made for testing of transformer 

oil, after taking out the sample from the manufactured transformers and tested in the presence of 

purchaser's representative. 

37.2 To ensure about the quality of transformers, the inspection shall be carried out by the purchaser's 

representative at following two stages:- 

37.2.1 Online anytime during receipt of raw material and manufacture/ assembly whenever the purchaser 

desires. 

37.2.2 At finished stage i.e. transformers are fully assembled and are ready for despatch. 

37.3 The stage inspection may be carried out ,if Board, desires to do so. 

37.4 After the main raw-material i.e. core and coil material and tanks are arranged and transformers are 

taken for production on shop floor and a few assembly have been completed, the firm shall intimate 

the purchaser in this regard, so that an officer for carrying out such inspection could be deputed, as 

far as possible within seven days from the date of intimation. During the stage inspection a few 

assembled core shall be dismantled (only in case of CRGO material) to ensure that the CRGO 

laminations used are of good quality. Further, as and when the transformers are ready for despatch, 

an offer intimating about the readiness of transformers, for final inspection for carrying out tests as 

per relevant IS shall be sent by the firm along with Routine Test Certificates. The inspection shall 

normally be arranged by the purchaser at the earliest after receipt of offer for pre-delivery 

inspection. The proforma for pre delivery inspection of Distribution transformers is placed at 

Annex- ‘K’. 

37.5 In case of any defect/defective workmanship observed at any stage by the purchaser's Inspecting 

Officer, the same shall be pointed out to the firm in writing for taking remedial measures. Further 

processing should only be done after clearance from the Inspecting Officer/ purchaser. 

37.6 All tests and inspection shall be carried out at the place of manufacture unless otherwise 

specifically agreed upon by the manufacturer .and purchaser at the time of purchase. The 

manufacturer shall offer the Inspector representing the Purchaser all reasonable facilities, without 

charges, to satisfy him that the material is being supplied in accordance with this specification. This 

will include Stage Inspection during manufacturing stage as well as Active Part Inspection during 

29

Acceptance Tests. 

37.7 The manufacturer shall provide all services to establish and maintain quality of workman ship in his 

works and that of his sub-contractors to ensure the mechanical /electrical performance of 

components, compliance with drawings, identification and acceptability of all materials, parts and 

equipment as per latest quality standards of ISO 9000. 

37.8 Purchaser shall have every right to appoint a third party inspection to carryout the inspection 

process. 

37.9 The purchaser has the right to have the test carried out at his own cost by an independent agency 

wherever there is a dispute regarding the quality supplied. Purchaser has right to test 1 % of the 

supply selected either from the stores or field to check the quality of the product. In case of any 

deviation purchaser have every right to reject the entire lot or penalize the manufacturer, which may 

lead to blacklisting, among other things. 

38. QUALITY ASSURANCE PLAN: 

38.1 The bidder shall invariably furnish following information along with his bid, failing which his bid 

shall be liable for rejection. Information shall be separately given for individual type of equipment 

offered. 

38.2 Statement giving list of important raw materials, names of sub-suppliers for the raw materials, list 

of standards according to which the raw materials are tested, list of tests normally carried out on 

raw materials in the presence of bidder's representative, copies of test certificates. 

38.3 Information and copies of test certificates as above in respect of bought out accessories. 

38.4 List of manufacturing facilities available. 

38.5 Level of automation achieved and list of areas where manual processing exists. 

38.6 List of areas in manufacturing process, where stage inspections are normally carried out for quality 

control and details of such tests and inspection. 

38.7 List of testing equipment available with the bidder for final testing of equipment along with valid 

calibration reports. These shall be furnished with the bid. Manufacturer shall posses 0.1 accuracy 

class instruments for measurement of losses. 

38.8 Quality Assurance Plan (QAP) with hold points for purchaser's inspection. 

38.9 The successful bidder shall within 30 days of placement of order, submit following information to 

the purchaser: 

38.9.1 List of raw materials as well as bought out accessories and the names of sub-suppliers selected from 

those furnished along with offer. 

38.9.2 Type test certificates of the raw materials and bought out accessories. 

38.9.3 The successful bidder shall submit the routine test certificates of bought out accessories and central 

excise passes for raw material at the time of routine testing. 

30

39. DOCUMENTATION: 

39.1 The bidder shall furnish along with the bid the dimensional drawings of the items offered indicating 

all the fittings. 

39.2 Overall Dimensional tolerances. 

39.3 Weight of individual components and total weight. 

39.4 An outline drawing front (both primary and secondary sides) and end-elevation and plan of the tank 

and terminal gear, wherein the principal dimensions shall be given. 

39.5 Typical general arrangement drawings of the windings with the details of the insulation at each 

point and core construction of transformer. 

39.6 Typical general arrangement drawing showing both primary and secondary sides and end-elevation 

and plan of the transformer. 

40. PACKING AND FORWARDING: 

41.1 The packing shall be done as per the manufacturer's standard practice. However, it should be 

ensured that the packing is such that, the material would not get damaged during transit by Rail / 

Road / Sea. 

41.2 The marking on each package shall be as per the relevant IS. 

41. GUARANTEE: 

41.1 The manufacturers of the transformer shall provide a guarantee of 30 months from the date of 

receipt at the stores of the Utility or 24 months from the date of commissioning, whichever is 

earlier. In case the distribution transformer fails within the guarantee period the purchaser will 

immediately inform the supplier who shall take back the failed DT within 15 days from the date of 

the intimation at his own cost and replace/repair the transformer within forty five days of date of 

intimation with a roll over guarantee. 

41.2 The outage period i.e. period from the date of failure till unit is repaired/ replaced shall not be 

counted for arriving at the guarantee period. 

41.3 In the event of the supplier's inability to adhere to the aforesaid provisions, suitable penal action 

will be taken against the supplier which may inter alia include blacklisting of the firm for future 

business with the purchaser for a certain period. 

42 SCHEDULES: 

42.1 The bidder shall fill in the following schedule which will be part of the offer. If the schedule are not 

submitted duly filled in with the offer, the offer shall be liable for rejection. 

Annexure-‘C’ 

Annexure- ‘F’ 

43 DEVIATIONS : 

: In the Schedule of Deviations clause of techno – commercial part-I. 

: Schedule of Deviation 

43.1 The bidders are not allowed to deviate from the principal requirements of the Specifications. 

However, the bidder is required to submit with his bid in the relevant schedule a detailed list of all 

deviations without any ambiguity. In the absence of a deviation list in the deviation schedules, it is 

understood that such bid conforms to the bid specifications and no post-bid negotiations shall take 

place in this regard. 

43.2 The discrepancies, if any, between the specification and the catalogues and / or literatures submitted 

as part of the offer by the bidders, shall not be considered and representations in this regard shall 

not be entertained. 

43.2 If it is observed that there are deviations in the offer in guaranteed technical particulars other than 

those specified in the deviation schedules then such deviations shall be treated as deviations. 

43.4 All the schedules shall be prepared by vendor and are to be enclosed with the bid. 

44. Label design, manner of display of Star rating in the Distribution Transformer 

44.1 Material of the lable shall be non detachable weather proof type. The Design of the Label, manner 

of display of label and its colour scheme will be in accordance with the notification of Bureau of 

Energy Efficiency, New Delhi. 

Electrical Superintending Engineer (purchase) 

JSEB, Ranchi 

31



FAX NO. 0651 – 2400799 

Annexure – ‘C’ 

Tender Proforma for Part – I (Technical & Commercial) 


Sl.no. Parameters Bidders particulars Page no.- 

1. Name & Full address of the tenderer : of tender documents 

With Tele.no…………… fax no…….. 

2. Name of Materials : 

3. Name of Manufacturer : 

4. Quantity offered : 

5. Whether the F.O.R. destination price has : 

been quoted giving freight element 

6. Whether quoted price is FIRM : 

7. Delivery period : 

8. Validity of the offer : 

(it should not be less than 90 days) 

9. Acceptance of the terms of payment : 

10. Acceptance of terms of security deposit : 

11. Details of deviation from the tender : 

Specification, if any 

12. Acceptance of the technical specification of : 

the materials for which offer is 

13. Guaranteed performance particulars : 

(copies of performance & Purchase order 

certificates should be attached) 

14. Guarantee : 

15. Acceptance of penalty clause : 

16. Particulars of payment made for Purchase of : 

BOQ and specification (Money receipt No. 

& date should be quoted) 

17. Amount of earnest money paid with money : 

receipt No. & Date 

32

18. Whether the firm is registered SSI unit of : 

Jharkhand or registered with NSIC/ DGS & D 

(give details of Registration etc. along with 

photo State copy of certificate.) 

19. Name of place where the materials will be : 

manufactured and will be available for 

inspection by the Board’s representative 

20. Whether Sales Tax 

clearance certificate submitted : Yes / No 

21. Sales Tax Registration No. : 

22. Whether proof of financial capability : Yes / No 

Submitted 

23. Details of past performance 

i) Whether list of past POs executed : Yes / No 

submitted 

ii) Whether copies of past Pos : Yes / No 

submitted 

iii) Whether copies of : Yes / No 

performance certificate enclosed 

24. Re-inspection charges supplied : Yes/No 

25. List of enclosures : 

26. Whether type-test report submitted : Type –test report no. 

27. Annual turn over as on 31.03.2010 : 

28. Whether, enrollment certificate of Bureau 

of Energy Efficiency for manufacturing of 

03 (three) star 63 kVA distribution 

transformer valid on due date of tender is 

submitted. : 

29. Whether bidder is accepting clause No. 27 

(quality control) of General Terms and 

conditions of NIT : 

30 Whether bidder is accepting clause No. 33 

(Extension order) of General Terms and 


31. Remarks : 

Signature of tenderer with full name 

Designation:………………………. 

Note: Must be filled in Board’s proforma only, 

Otherwise offer may be liable for rejection. 

Seal:……………………………….. 

33



FAX NO. 0651 – 2400799 

Annexure – ‘D’ 

TENDER PERFORMA FOR PART – II (PRICE BID) 


1. Name & Full address of the tenderer : 



4. Tender notice no. with due date : 


6. Whether quoted price is firm : YES 

7. Unit Landed price Breakup : 

a–i) Ex-factory price of transformer 

Ex-works price shall be quoted after 

considering benefit under MODVAT 

or any other scheme to be retained by 

the supplier 

a- ii) Ex-works price of Lightning Arresters 

a-iii) Ex-works price of CSP 

(completely self protected) : 

b) Excise duty 

c) VAT / CST 

d) Freight 

(including loading, unloading at stores,: 

packing forwarding etc.) 

e) Other charges, if any : 

f) Entry tax, if applicable : 

g) Insurance – will be arrangement by the Board 

8. Discount, if any 

(Conditional discount will not be accepted) 

9. Total landed price 

10. Remarks: Must be filled in Board’s proforma only, 

Failing which offer may be liable for rejection. 



Seal:……………………………….. 

34



FAX NO. 0651 – 2400151 



GUARANTEED AND OTHER PARTICULARS FOR DISTRIBUTION 

TRANSFORMERS (63 kVA rating) 

Sl. No. Description To be filled by 

Bidder 

1. Make 

2. Name of Manufacturer 

3. Place of Manufacture 

4. Voltage Ratio 

5. Rating 

A. Rated output (KVA) 

B. Rated Voltage (HV) 

C. Rated Voltage (LV) 

D. Number of Phases 

E. Rated Frequency (Hz) 

F. Vector Group Symbol 

6. Core Material used and Grade: 

a. Flux density 

b. Over fluxing without saturation 

(Curve to be furnished by the Manufacturer in support of his claim) 

7. Maximum temperature rise of (without +ve tolerance) 

a) windings by resistance method 

b) Oil by thermometer 

8. Magnetising (no-load) current at: 

a) 90% Voltage 

b) 1 00% Voltage 

c) 110% Voltage 

9. Core loss in watts : 

a) Normal voltage 

b) Maximum voltage 

10. Resistance of windings at 20 °C (with 5% tolerance) : 

a. HV Winding (ohms) 

b. LV Winding (ohms) 

11. Full load losses (watts) at 75 °C (without +ve tolerance) 

12. Total Losses at 1 00% load at 75 °C (without +ve tolerance) 

35

13. Total Losses at 50% load at 75 °C (without +ve tolerance) 

14. Current density used for : 

a) HV Winding 

b) LV Winding 

15. Clearances : (mm) 

a) Core and LV 

b) LV and HV 

c) HV Phase to Phase 

d) End insulation clearance to earth 

e) Any point of winding to tank 

16. Efficiency at 75 °C : 

a) Unity P.P. and 

b) .0.8 P.P. 

1) 125% load 

2) 100% load 

3) 75% load 

4) 50% load 

5) 25% load 

17. Regulation at : 

a) Unity P.P. 

b) 0.8 P.P. at 75 °C 

18. % Impedance at 75 °C 

19. Flashiest: 

(i) HV 28 kV / 50 HZ for 1 minute 

(ii) LV 3 kV/50 Hz for 1 minute 

20. Over potential Test (Double Voltage and Double frequency 

for 1 minute) 

21. Impulse test 

22. Mass of : (kg) 

a) Core lamination (minimum) 

b) Windings (minimum) 

c) Tank and fittings 

d) Oil 

e) Oil quantity (minimum) (litre) 

f) Total weight (without –ve tolerance) 

23. Oil Data : 

1. Quantity for first filling (minimum) (litre) 

2. Grade of oil used 

3. Maker's name 

4. BDV at the time of filling 

24. Transformer: 

1) Overall length-x breadth x height (mm x mm x mm) 

2) Tank length x breadth x height 

3) Thickness of plates for (without–ve tolerance) 

a) Side plate (min) 

b) Top and bottom plate (min) 

4) Conservator Dimensions 

25. Radiation: 

1) Heat dissipation by tank walls excluding top and bottom 

2) Heat dissipation by cooling tube 

3) Diameter and thickness of cooling tube 

4) Whether calculation sheet for selecting cooling area to ensure that 

the transformer is capable of giving continuous rated output without 

36 

`

exceeding temperature rise is enclosed. 

26. Inter layer insulation provided in design for: 

1) Top and bottom layer 

2) In between all layer 

3) Details of end insulation 

4) Whether wedges are provided at 50% turns of the HV coil 

27. Insulation materials provided 

a) For Conductors 

(1) HV 

(2) LV 

b) Core 

28. Material and Size of the wire used 

1) HV Dia (mm) (SWG) 

2) LV 

a) Strip size 

b) No. of Conductors in parallel 

c) Total area of cross section (sq mm) 

29. Whether the name plate gives all particulars as required in Tender 

30. Particulars of bushings HV/LV 

1) Maker's name 

2) Type IS-3347/IS-2099/IS7421 

3) Rating as per IS 

4) Dry power frequency voltage withstand test 

5) Wet power frequency voltage withstand test 

31. Number of years for which the design offered has been in commercial 

use. 

32. Whether, painting performance requirement is guaranteed for a minimum 

period of 05 years from date of receipt of materials in store. 

33. Whether transformers have completely self protected and protective 

features, in accordance with Cl. # 27 and 28 of the GTP 

34 Whether transformer will have design of label, manner of display of label 

& it’s colour scheme as per cl # 44.1 of technical specification of NIT. 

35 Whether transformers will have load management signal light as per cl # 

29 & 29.1 of technical specification of NIT. 

Note:- GTP must be filled up by the bidders in the above Board’s proforma only, failing which 

offer shall be rejected. 



Seal:……………………………….. 

37



FAX NO. 0651 – 2400799 

Annexure – ‘F ’ 


SCHEDULE OF DEVIATIONS FROM SPECIFICATIONS 

Sl. 

No. 

SPECIFICATION / CLAUSE 

DEVIATION FROM 

SPECIFICATION 

(commercial & technical) 

JUSTIFICATION 

FOR DEVIATION 

Place: 

Signature of tenderer 

Date: 

Stamp 

NOTE:- Incase of not mentioning deviations in this deviation sheet & mentioning it elsewhere in 

the offer except in the tender proforma for part-1 (techno commercial), will be treated as no 

Deviations. 

38



FAX NO. 0651 – 2400799 

Annexure – ‘G ’ 

DETAILS OF TESTING FACILITIES 


Name of Test 

Details of testing 

Remarks 

1. 

i. 

ii. 

iii. 

iv. 

2. 

i. 

ii. 

iii. 

iv. 

3. 

i. 

ii. 

iii. 

iv. 

4. 

Test on Raw Material 

Routine Tests 

Acceptance Tests 

Type-tests 

facilities available 

______________________________ 

______________________________ 

______________________________ 

______________________________ 

______________________________ 

______________________________ 

i. 

ii. 

iii. 

iv. 

______________________________ 

______________________________ 

NOTE:- Incase testing facilities are not available for certain tests, indicate in the remarks columns 

from which testing House (S) / Institution (S) these tests will be got carried out. 

Signature & Seal of Tenderer 

39



FAX NO. 0651 – 2400799 

Annexure – ‘H ’ 

PROFORMA FOR SCHEDULE OF REQUIREMENT & SPECIFIED DELIVERIES FOR supply of type-tested, 03 star, 63 kVA, Al 

wd, CRGO core, distribution transformer fitted with light arresters 


DELIVERY SCHEDLUE 

Sl. 

No. 

Item Nos. required The material are to be delivered on or before 

07.07.2011 at Central Stores, Deoghar and 

Dumka.. 

15 (fifteen) 

NOTE : - 1. Priorities of despatches will be as notified by the Purchaser at the time of pre-despatch inspection. 

Signature of tenderer : 

Name : 

Address : 

40

SELF DECLARATION CERTIFICATE 

Annexure- ‘I’ 

It is Certified that M/s .................................................................................................... is not 

Black listed from Central Govt./ State Govt. / Central or State Govt. Undertaking / Public Sector 

Undertaking etc for the tendered item. 

Date: 

Name & Signature of the 

Tenderer & Seal 

41


Annexure- ‘J’ 

It is hereby declared that payment of Sales tax of M/s ........................................................is 

update & nothing is due with Sales tax Department. 

Date: 



42

Annex-'K' 

Proforma for pre-delivery inspection of distribution transformers 

1 Name of the firm 

2 Details of offer made 

i) Order No and date 

ii) Rating 

iii) Quantity 

iv) Sl No. of transformers 

3 Date of stage inspection of the lot 

4 Reference of stage inspection clearance 

5 Quantity offered and inspected against the order prior 

to this lot 

A) Acceptance tests to be carried out 

Sl Particulars 

1 a) Ratio test 

Observations 

AB/an 

BC/bn 

b) Polarity test 

CA/Cn 

2 No load loss measurement 

W1 

W2 

W3 

Multiplying factor 

CT 

Watt meter 

Total 

Total x MF 

Net loss 

3 Load loss measurement 

W1 

W2 

43

W3 

Total 

Multiplying factor:- 


CT 

Watt meter 

PT 

Total x MF 

Loss at ambient temperature (watt) 

Loss at 75°C (with calculation sheet) (watt) 

4 Winding resistance: 

HV (in ohms) 

Observations 

a) At ambient temperature of ……….°C A-B 

B-C 

C-A 

b) Resistance at 75°C A-B 

B-C 

C-A 

LV (in ohms) 

a) At ambient temperature of ……….°C a-b 

b-c 

c-a 

b) Per phase Resistance at 75°C a-n 

b-n 

c-n 

5 Insulation resistance (M ohm) 

HV-LV 

6 Separate source voltage withstand test voltage 

HV 

LV 

7 Induced over-voltage withstand test at double voltage 

and double frequency 

8 No load current at 

90% volts 

110% volts 

9 Unbalance current 

44 

HV-E 

LV-E 

28 kV for 60 secs 


100 Hz, 866 volts for 

60 seconds 

10 Vector group test Diagram and 

readings be shown in 

separate sheets 


Observations

11 Percentage impedance at 75°C (please furnish 

calculation sheet) 

12 Transformer oil test (break down voltage) 

13 Oil leakage test 

14 Heat run test To be carried out 

once against the 

order 

15 Bushing clearance (mm) 

HV LV 

a) Phase to phase 

b) Phase to earth 

16 Comments on compliance by the firm on the 

modifications done as per stage inspection clearance 

letter issued 

17 Whether fittings of the order have been varified 

18 Whether aluminium dia cast silicagel breather with tin 

container is fitted on the transformers offered 

19 Whether engraving of sl no. and name of firm on core 

clamping channel, side wall and top cover of tank has 

been varified 

20 Whether MS plate of size 125x125 mm walded on 

with side of stiffner. 

21 Whether engraving of name of firm, si no. and rating 

of transformer, order no and date and date despatch 

on MS plate. 

22 Copy of calibration certificates of metering 

equipments be enclosed 

B Points to be seen/dimensions to be noted at the 

time of dismantling of transformers 


1 Details of the transformer dismantled for physical 

verfication 

a) Rating (kVA) 

b) Sl No. 

Observations 

2 Whether GI Nut Bolts with one spring one plain 

washer provided for tightening the tank cover 

3 Details of gasket used between top cover and tank material 

i)Thickness (mm) 

ii) Type of joints 

4 Whether core is earthed properly with copper strip (one end 

should be tightended in between the core laminations and other 

end bolted on core clamping channel). 

5 Connections from winding to bushings (describe the manner in 

which it has been done) 

a) HV 

b) LV 

c) Formation of star connection on LV side 

45

6 Winding wire dia and cross sectional area 

a) HV 


i) Dia (mm) 

ii) Area (sqmm) 

b) LV 

i) LxWxNos. of layer 


7 Thickness of press board (s) provided between HV coils to cover 

the tie rods 

8 Whether painted with oil and corrosion resistant paint/varnish 

a) Inside of the tank 

b) Inside of the conservator tank 

c)Core clamping and core base channels 

d) Tie rods 

e) Core bolls 

9 Whether tie rods and core bolts insulated, if yes, material of 

insulation 

10 Whether flap on inner side of top cover provided to prevent direct 

falling of oil on core-coil assembly 

11 Method of joints 

a) Between HV coils 

b) Between tap coils 

c) For tap changer 

12 Whether engraving of sl no. and name of firm done on bottom 

channel of core coil assembly 

13 Diameter of copper wire, used of formation of delta (shuold not 

be less than 1.5 times the dia of conductor). (mm) 

14 Whether empire sleeves provided upto the end portion of HV 

winding joining to bushing 

15 HV coils:- 

a) Inner dia (mm) 

b) Outer dia (mm) 

16 LV coils: 



17 Core dia 

18 Core height including base channel and insulation in between 

(mm) 

19 Leg center of core 

20 Clearances between 

a) Core and LV (mm) 

b) HV and LV (mm) 

c) Phase to phase of HV coils (mm) 

d) Core coil assembly and tank body (mm) 

i) Length-wise 

ii) Width-wise 

e) Top of yoke and top cover (mm) 

f) Top most live part of tap changer and top cover 

21 Weight of core only (kg) 

22 Weight of winding only (kg) 

a) LV 

b) HV 

23 Whether core laminations are in one piece, used for 

a) Bottom yoke 

b) Top yoke 

24 Specific remark Regarding smoothness and heating of core used 

25 Volume of oil filled (to be done once against the order) 

Observations 

46

a) in conservator tank 

b) In tank of the transformer 

26 Weight of transformer (inclusive of all fittings, accessories, oil etc 

complete) 


27 Inner dimensions of the tank 

a) Length 

b) Width 

c) Height 

i) LV side 

ii) HV side 

28 Remarks, if any 

Observations 

Note:- Please ensure that complete details have been filled in the 

proforma and no column has been lelf blank 

Signature of inspecting officer 

(with name and designation) 

Date of inspection 

Signature of firms 

Representative 

(with name and 

designation) 

47


Annexure- ‘L’ 

It is to undertake that M/s ................................................................................................. will 

supply additional quantity, if required by Board on same rate, terms and conditions, if extension 

order is placed within 12 month from the date of acceptance/ placement of order. 

Date: 



48

Annexure- ‘M’ 

DECLARATION CERTIFICATE 

It is hereby declared that none of the persons employed in the Board or his/her close family 

member/blood relations / proxies are related to M/s ……………………… ………………. directly or in 

directly. 

Date: 



49


OFFICE OF THE CHIEF ENGINEER (STORE & PURCHASE) 


NIT No.218/PR/JSEB/2011-12. 

for 

Manufacturing, testing & supply of type-tested, 11/.433 kV, 03 star, 100 kVA, Al wd, 

stack type CRGO core, distribution transformer fitted with lightning arresters (LA) and 

Completely self protected (CSP). 

Quantity: 28 # 

Due date of tender :24.06.2011 at 14.30 hrs. 

Issued to: _____________________________________ 

______________________________________ 

______________________________________ 

Price of tender document: 

Rs. 2000/- (two thousand) only. 

FIRM price 

50



FAX NO. 01191 – 2400799 


General Terms and Conditions for Submission of Tender for Supply of Materials 

1. Sealed tenders in duplicate are invited from reputed, experienced and financially sound manufacturer 

for procurement of transformers from ready stock (Ex-Stock) having adequate manufacturing & 

testing capacity, best facilities and capability only for supply of type-tested, 11/.433 kV, 03 star, 100 

kVA, Al wd, stack type CRGO core, distribution transformer fitted with lightning arresters (LA) and 

Completely self protected (CSP) as per specifications attached at Annexure ‘B’. Offers of 

manufacturers who have no past experience and adequate manufacturing capacity of the tendered 

item may not be considered valid and may be rejected. 

2. Quantity : 28 (twenty eight ) # 

(Actual Quantity may Increase or Decrease) 

3. The tender should be submitted in the prescribed enclosed proforma only in two parts i.e. Part – I 

(Technical & Commercial Part) and Part – II (Price Part) in two separate envelops duly sealed and 

super scribed on the top of the envelops as Technical and Commercial Part – I/ Price Part – II and 

addressed to Chief Engineer (S&P), JSEB Ranchi – 4. The name of the firm, NIT No., Due date, 

Name of materials offered, amount of earnest money deposited with money receipt # and date should 

be clearly indicated on the cover of the envelop. 

4. Both parts of the sealed tenders will be received upto 13.00 hrs. of 24.06.2011 in the office of Chief 

Engineer (S&P), JSEB Ranchi and the Part – I will be opened at 14.30 hrs. on the due date in 

presence of such of those tenderers or their authorized representatives as may desire to be present. 

The undersigned may extend the due date of opening of Part – I with intimation to all tenderers. 

The Price Part (Part–II) of those tenderers whose offers are found technically and 

commercially acceptable will be opened later on. The exact date will be intimated to the responsive 

tenderers. 

5. No offers/ tenders will be accepted after due date and time and shall be treated as rejected. 

The desirous tenderers can purchase tender documents including terms and conditions, BoQ and 

technical specification from the office of Chief Engineer (S&P), JSEB Ranchi on application and 

payment of Rs. 2000/- (Rupees two Thousand) only (non-refundable) in cash or in shape of 

demand draft issued by nationalized Bank/scheduled Bank in favour of Deputy Director of 

Accounts (Sectt.), JSEB Ranchi payable at Ranchi on any working day (working hours:-10.00 AM 

to 05.00 PM) up to one day before the due date (i.e., upto 23.06.2011 ) . No tenders will be accepted/ 

considered unless the tenderer buy at least one copy of the tender documents by the prescribed date. 

51

6. Earnest money: 

a) Tender must be accompanied with an earnest money for Rs. 56,000/- (fifty six thousand) 

only for the offered quantity, unless exempted from such deposit, failing which the tender 

will be out rightly rejected. 

b) The earnest money should be deposited in cash with Dy. Director of Accounts (Sectt.), 

JSEB Ranchi and reference of the money receipt no. and date is to be given in the tender or 

in the form of Bank Draft drawn or BG of any Nationalized Bank, valid for 90 days from 

date of opening of tender, issued in favour of the Dy. Director of Accounts (Sectt.), JSEB, 

Ranchi payable at Ranchi and reference be given on the cover of the tender mode indicated 

in NIT. The Bank Guarantee with lesser validity will be rejected. 

c) Cheque/ Fixed Deposit receipt/ Money Order or and saving certificate etc. are not acceptable 

towards deposit of earnest money and tenders with above will be considered without earnest 

money and shall be rejected. 

d) Earnest money deposited by firms against any other tender of the Board/ or of this office will 

not be considered as earnest money for the present tender under any circumstances. 

e) No earnest money will be accepted after opening of the tender. 

f) No interest on the earnest money deposited by the tenderer will be payable by the 

purchaser. 

7. Exemption: 

The tenderers of following categories are exempted from deposit of earnest money subject to 

the conditions laid down below: - 

a) The firm registered with DGS&D for manufacture of the item for which tenders are to be 

submitted and the registration certificate should remain valid at the time of submission of the 

tender and during contract period. The tender in such case shall be accompanied with a 

certified photo state copy of the valid registration certificate failing which the tender shall be 

rejected. The estimated cost of the offered quantity, as per cl # 6 (a) of NIT, should be less 

than the monetary limit as mentioned in the DGS&D certificates, failing which the 

exemption will not be applicable & offer will be rejected. 

b) The State Govt./ Govt. of India undertaking. 

c) Firms registered with NSIC under single point registration scheme for manufacture of the 

item, provided that certificate is valid on the date of tender and during the period of delivery. 

The estimated cost of the offered quantity, as per cl # 6 (a) of NIT, should be less than the 

monetary limit as mentioned in the NSIC certificates, failing which the exemption will not 

be applicable & offer will be rejected. 

In case the Monetary limit of DGS&D certificate / NSIC certificate is less than the 

estimated cost of the offered quantity the bidder are allowed to deposit the Earnest Money 

Deposit of deferential estimated cost (estimated cost of offered quantity -Monetary limit of 

D G S & D certificate / NSIC certificate) as per clause 6 (a) of tender in shape of cash/Bank 

52

Draft/Bank Guarantee (of Nationalized Bank) along with bid, failing which the bid shall be 

rejected. 

d) The earnest money will be liable to be forfeited on revocation of tender before the validity of 

the quotations expires or on refusal to enter into a contract after the award (LoI/PO) is made 

to the tenderer. 

e) SSI unit of Jharkhand, registered with Department of Industries, Govt of Jharkhand / 

Industrial Area Development Authority, Govt of Jharkhand, for tendered item, valid on the 

due date of tender and during the period of contract. SSI unit of Jharkhand must submit self 

attested or notarized valid copy of SSI registration certificate for tendered item, issued from 

department of Industries/ Industrial Area Development Authority, Govt of Jharkhand, failing 

which, they will not be considered SSI unit. 

The tender in such cases should be accompanied with self attested or notarized copy 

of the valid registration certificate, failing which tender shall be rejected. 

NB: Aforementioned certificate must accompany with documentary evidence for its validity on 

the due date of the tender, failing which tenders will be rejected. As the documents 

mentioned herein above must be valid during the period of supply/ delivery also. Copy of the 

same shall be produced at the time of submission of bill for payment. 

8. Security Deposit and Contract Agreement: 

The successful tenderers shall have to deposit security money @ 2% of the ordered value at the time 

of executing the contract agreement. However, the SSI units of Jharkhand having permanent valid 

registration with Department of Industries /Industrial Area Development Authority (IADA) Govt. of 

Jharkhand for the manufacture of the item will be required to deposit security money @ 1% (one 

percent) of the ordered value. In no case, exemption from security money will be granted. Security 

money to be deposited may be adjusted from the earnest money deposited in shape of cash/ Bank 

Draft only, if any. 

The amount of security money shall be deposited with DDA (HQ), JSEB, Ranchi in cash or 

in shape of Bank Draft/ Bank Guarantee (of any Nationalised Bank) will be treated as a 

performance guarantee. The security money thus deposited will be released after completion of 

satisfactory supply of approximately full ordered quantity of materials and expiry of guarantee 

period. Payment will be made only after depositing the security money and execution of contract 

agreement. 

9. Annual turnover: 

Annual turnover of the firm for preceding three financial years must be at least 8.35 lacs. Certified / 

Attested copy of annual A/C (Balance sheet, profit & loss A/c etc) from practicing chartered 

Accountant or both for financial year 2007-08, 2008-09 & 2009-10 must be submitted along with 

the offer to establish financial credibility of the bidders. In absence of the above credentials, offer 

may be rejected. However, SSI units of Jharkhand are exempted from annual turnover clause. 

53

10. Delivery: 

The material are to be delivered on or before 07.07.2011 at Central Stores, Deoghar and Dumka.. 

11. Penalty / Liquidated damage: 

The delivery of goods will be guaranteed under liquidated damage clause. Our usual terms of LDclause 

is ¼% (quarter percent) of the value of the materials delayed per week or part thereof subject 

to maximum 5% (Five percent). 

Type-tested, 11/.433 kV, 03 star, 100 kVA, Al wd, stack type CRGO core, distribution transformer 

fitted with lightning arresters (LA) and Completely self protected (CSP)will be deemed to have been 

delivered only when all its component parts are also delivered in stores of JSEB. If certain 

components are not delivered in time the equipment/item will be considered as delayed till such time 

as the missing parts are delivered. 

12. Price: 

Rate in figures and in words must be quoted in the enclosed proforma of price part on FIRM price, 

subject to any statutory change in due course of time, indicating therein Ex-factory price, freight 

element up to destination, element of Excise duty, sales tax and other charges. The Ex-works price 

shall be quoted after considering benefit under CENVAT or any other scheme to be retained by the 

supplier. The materials are to be dispatched to various destinations in Jharkhand as may be required. 

The responsibility of safe delivery will rest with the supplier. If the price elements are not quoted 

separately as indicated above, the tender will be liable for rejection. Freight element will include 

loading, unloading, packing and forwarding complete. If any other taxes are levied or reduced by the 

Govt. the same will be added or subtracted respectively to the landed cost for evaluation of the 

tender. If Excise Duty, Sale Tax / VAT or Entry Tax is not quoted separately or proof of exemption 

of the same is not given, the relevant duty and / or tax at the maximum rate will be added to evaluate 

landed cost of the bidder. 

Arithmetical errors will be rectified on the following basis: If there is discrepancy between 

unit price and the total price i.e obtained by multiplying the unit price and quantity, the unit price 

shall prevail and total price shall be corrected. If the bidder does not accept the correction of errors, 

his bid will be rejected & EMD will be forfeited. If there is a discrepancy between words and 

figures, the amount in words shall prevail. 

13 Insurance: 

The materials are to be insured with Board’s underwriter under its Incland Marine Cargo policy in 

all cases for which the supplier should complete the Board’s proforma and sent the original to the 

Chief Claim Officer, Jharkhand State Electricity Board, Ranchi for taking over a policy with copy to 

the consignees and paying officers concerned at the time of dispatch of each consignment. As such 

the Insurance premium should not be included in the quoted price. Failure to submit the insurance 

proforma duly filled in and signed by the suppliers shall make the suppliers liable for any damage 

during the transit of materials. Proforma for Insurance is enclosed as per annexure. 

In case the materials are insured under the Board’s open policy the consignee concerned will 

take prompt action to lodge a claim with the supplier, Carrier and the Insurance Company with an 

54

intimation to the Chief Claim Officer of the Board for the materials received short/ in damaged 

conditions and no recovery of the cost of such materials shall be effected from the supplier’s bill 

except for short supply for reason of defective packing or any other lapses on the part of consignor. 

If packing cases are not found intact conditions at the time of taking delivery and the materials 

therein are found short, the cost of such materials shall be recovered from the supplier’s bill. 

Similarly the supplier will be liable for compensation for defective packing. However, non recovery 

will be limited to amount reimbursed by Insurance Company and balance amount will be recovered. 

14. Import Licence: 

Import licence cannot be arranged by the Board for such of these materials, which are under banned 

category of import. When import is desired to be effected by the tenderers under their own quota 

licence, the value of quota specifically available against the tender should be stated. In case of 

availability of suitable indigenous make materials the same may be preferred. 

15. Tests: 

All routine tests will have to be conducted on the materials in case order is placed according to 

relevant standard and test certificate in triplicate will have to be furnished prior to supply of 

materials. Each lots of the materials shall be subjected to the test prescribed in the relevant standard 

(latest edition) before supply is affected. Untested material will not be accepted. 

16. (i) Inspection: 

The materials may be inspected by the Board’s representative during the process of 

manufacturing and prior to dispatch. The suppliers are requested to intimate the progress of 

manufacturing and testing at least 15 days in advance to Chief Engineer (S&P), JSEB Ranchi to 

enable them to depute an officer or an authorized representative for inspection. Failure to adhere to 

the specification will entail rejection of materials. All tests and inspection shall be made at the place 

of manufacture unless otherwise specially agreed upon by the manufacturer and purchaser at the 

time of purchase. The manufacturer shall offer the inspector representing the purchaser all 

reasonable facilities without charges to satisfy him that the material is being furnished in accordance 

with the specification. The materials cleared for dispatch after approval of inspection report should 

be dispatched/ delivered immediately to different consignees. 

(ii) The purchaser has the right to have the tests carried out at his own cost by an independent 

agency whenever there is a dispute regarding the quality of supply. 

(iii) During the pre-dispatch inspection the firm shall have to produce original copy of calibration 

certificate of testing equipments (not more than one year old)/ type test report/ BIS license/ 

NSIC, DGS&D or SSI registration certificate to the inspecting officer for verification. If 

there is any discrepancies found during verification the materials may not be accepted. These 

documents should be authenticated by inspecting officer at the time of inspection and 

forwarded to accounts with bills of each lot. 

(iv) The pre-dispatch inspection & testing is mandatory unless an order for waiver of the same is 

given by the competent authority. These documents should be attested by inspecting officer 

at the time of inspection & forwarded to accounts with bills of each lot. 

55

17. Forfeiture of Earnest Money & Security Money Deposit: 

It should be clearly understood that in the event of the tenderers failing to accept and execute the 

telegraphic and detailed orders (LoI/PO), if its placed within the validity period of the offer, then the 

full amount of earnest money and security deposit will be forfeited and the Board’s decision in this 

respect will be final and binding on the tenderer. Earnest money of those tenderers will be forfeited 

who are found indulging in changing adding or deleting the conditions of the “downloaded tender 

document”. 

Earnest money of those tenderers will be forfeited who are found to form cartel. 

The forfeiture of earnest money and security money shall not in any way affect, limit or 

extinguish any remedy or relief to which above authority may at any time be lawfully entitled. 

18. Guaranteed Particulars: 

The performance particulars as required in the specifications should be sent along with the tender, 

other details not specified may also be given. 

19. Manufacturing Capacity: 

The tenderer must have sufficient manufacturing capacity to meet the delivery schedule as per clause 

10. The bidder should also be financially sound to manufacture the tendered item within scheduled 

time. 

In support of above capacity the tenderer must produce documentary evidence Viz Annual 

Accounts / Bankers Solvency certificate etc. 

20. Past Performance: 

Bidders must submit detailed list of executed purchase orders along with their copies for the same item or 

same item of higher size and capacity clearly indicating PO # and date with name of material and its 

quantity & value and also submit name and address of the ordering authority issued in atleast any one of 

the last 3 (three) years from the due date of tender, failing which the offer may be rejected. The bidder 

should also submit performance certificate if any, indicating period of supply, quantity and value for the 

tendered item issued during the above period with the offer. 

Offer of those firms who have not completed full of the ordered quantity against previous 

Purchase Orders of JSEB for this item issued during last one year from date of opening of this NIT, 

shall not be considered as valid and shall be rejected. On placement of order, Bidder has to supply 

full ordered quantity, failing which the bidder shall not be eligible to participate in forth coming 

tenders, for a period of at least one year from the date of issue of such purchase order. Past 

performance of the material supplied earlier by a bidder to JSEB may be taken in to account while 

finalizing this tender. 

21. Deviation from Specification: 

If there are some deviations, then it must be mentioned in the schedule of deviations from specification 

sheet annexed separately. In case of not mentioning deviations in the deviation sheet and just mentioning 

it at any other place of the offer except in the tender proforma for part-I (Techno commercial part) will be 

treated as no deviations. 

56

22. Income Tax and Sales Tax: 

Attested copies of Sales Tax clearance certificate at least valid upto 31.03.2010 should 

accompany the tender, failing which the tender is liable to be rejected. State and Central Sales 

Tax registration number of the tenderer should also be stated. Self declaration certificate with a 

declaration separately that nothing is due to Income Tax Department & payment of Income Tax is up 

to date should be enclosed with the offer. 

23. Taxes & Duties and Landed Unit Rate Evaluation Process: 

(i)The bidders must quote entry tax amount if applicable in price part II at the time of submission 

of the offer. In case the bidder doesn’t quote entry tax amount in the price part-II, or just 

mention entry tax amount “NIL” or quote absurd rate of entry tax then applicable rate of entry 

tax will be taken into account for evaluation of the tender. The evaluation of L-1 bidder shall 

be made on the landed unit rate (ie FoR destination basis), which is inclusive of the exworks 

price, excise duty, CST/VAT, freight, entry tax etc. 

(ii) Excise Duty / CST shall be paid at the rate quoted by the bidder in the price part-II submitted 

with the offer against the NIT subject to statutory variation (in case of both, increase or 

decrease) imposed by the Government but any increase in taxes and / or duties because of the 

increase in the bidders annual-turn-over etc, for which the firm is functionary, would be borne 

by the firm. 

No upward variation shall be payable beyond the contractual delivery schedule. In case 

supply against the contract is completed late and rate of ED/S. Tax undergoes upward revision, 

the payment will be continued on the basis of rates prevailing during the contractual schedule. 

24 Progress Report: 

The suppliers will have to submit monthly/ fortnightly progress report regularly until completion of 

delivery, to the Chief Engineer (S&P), JSEB Ranchi by the first week of every month following the 

month in which order is placed to monitor the progress made by the supplier towards proper 

execution of the order, alongwith copy to paying authority. 

25. Terms of Payment: 

a) 100% payment will be made by Dy. Director of Account (HQ), JSEB, Ranchi on submission of 5% 

Bank Guarantee from any Nationalised Bank of ordered value on non-judicial stamp Rs. 60/- 

(Rupees sixty) only valid for Guarantee period as per cl-39 and on receipt of SRV duly signed by 

the concerned consignee after receipt of the materials in good condition along with approved routine 

test certificate and duly filled check list for payment from Stores & Purchase wing. 

b) If the Bank Guarantee of any Nationalised Bank is not furnished, payment will be made after 

deducting 5% of the total order value from the first or consecutive bills after receipt of the materials 

in good condition along with approved routine test certificate and duly filled check list for payment 

from Stores & Purchase wing. The deducted amount will be kept back as performance guarantee 

and will be released after successful completion of guarantee period. 

For the above modes of payment ¼ % (Quarter percent) rebate will be deducted from the exfactory 

price of the materials. However, Excise Duty part will be paid only after production of 

documentary evidence as per prevailing Excise Rules. Sales Tax will be paid on submission of upto 

date income tax and sales tax deposit certificate by competent authority of respective department. 

The paying officer will accept the Bank Guarantee after confirmation from the concerned bank. 

57

Supplier must submit documentary evidence in support of claim for exemption from any tax or duty 

if any. The 5% amount / B.G. will be paid after expiry of Guarantee period. The above payment 

term is applicable in accordance with compliance of clause # 27 & 37 of the tender. 

26. Validity Period: 

Tenderer should specify the validity period of their offer which should not be less than 90 (ninety) 

days from the date of opening of tender, which may be extended on discretion of the Board. The 

offers with lesser validity period will be outrightly rejected. 

27. Quality Control- (For Distribution Transformers only) 

3 star rating being new item to JSEB, 1(One) # from the supplied distribution transformer into the 

stores of JSEB, on each lot of offer of pre-dispatch inspection shall be randomly selected by 

JSEB & sent for CPRI for type-test (short circuit and lightning impulse) at the cost of JSEB. The 

payment to the supplier shall be made on submission of 100% B.G. of payable amount alongwith 

SRV & other documents. The BG thus submitted valid for 06 months, subject to extension till 

completion of type test, shall be released only after submission of successful type test from CPRI, 

failing which the BG of that particular offered lot will be encashed & bidders will be allowed to 

take back all the transformers supplied in that particular offer & pre-dispatch inspection lot, at 

their own cost. 

The Board may inspect / test / examine the quality of the raw materials at the 

premises of the prime supplier to the bidders of JSEB at the Boards own cost. Stage/factory 

inspections shall be conducted by the inspecting officers of the Board / third party inspection. 

28. Raw Materials: 

No raw materials will be arranged by the Board. Tenderers will have to arrange their requirements of 

raw materials themselves. 

The Purchaser reserves the right to inspect the raw material procured by the supplier for the 

purpose of manufacture of materials to check the genuineness of the raw materials. The purchase or 

his representative can demand the original invoices in respect of all the raw materials. 

29. Minimum Quantity: 

The requirement mentioned in the tender notice and general conditions is tentative and is subject to 

increase or decrease at the time of finalization of the tender. The tenderer must quote minimum 

50% of the tendered quantity. Tenders with lesser quantity will not be entertained. 

30. In case the order is placed, the firm will have to dispatch the materials in the name of the consignee 

only and “self booking” will not be accepted. 

31. The bidders should submit self-declaration Certificate, that the firm is not blacklisted from Central 

Govt / State Govt / Central or State Govt. undertakings/ Public Sector Undertaking etc. for the 

tendered item and also submit declaration Certificate that the firm is not related to any persons 

employed in the Board or his/her close family member/blood relations / proxies. 

58

32. Contract Form: 

The successful tenderers will have to execute contract agreement in the Board’s proforma prior to 

the placement of the purchase order. The contract agreement is to be executed on Rs. 200.00 non - 

judicial stamp paper. 

33. Extension Order: 

In the event of an order being placed on the tenderer, the tenderer requested to give his concurrence 

that he is willing to accept additional order on the same terms and conditions if the extension order is 

placed by Board within 12 (twelve) month from the date of acceptance/ placement of order. Bidder 

should submit an undertaking that they will supply additional quantity, if required by Board on same 

rate, terms and conditions, if extension order is placed within 12 month from the date of acceptance/ 

placement of order. 

34. Tolerance of Electrical Performance: 

Tolerance shall be according to relevant I.S.S. unless & otherwise stated in technical specification. 

35. Packing: 

Materials shall be delivered suitably packed. Although method of packing is left to the discretion of 

the manufacturer it should be robust enough for rough handling that may be occasioned during 

transportation by Rail/ Road. Further it is to clarify hare that all the charges towards packing, 

forwarding, loading and unloading etc. Shall be borne by the supplier. 

36 Drawing & design of item: 

Drawing and design of item offered duly signed with firm seal should accompany the tender. 

Tenderer must furnish complete design details, dimensional details & drawing indicating the internal 

arrangement in addition to a drawing indicating outside dimensions and method of fixation of 

fittings etc. The tenderer shall submit design details supported by type test report of the 

manufactured item. The Board reserves the right to reject the tenders if design parameters are 

considered qualitatively inferior or prefer, the tenders whose design parameters are qualitatively 

considered better. 

However, due opportunity to be heard will be given to bidders before taking decision in this regard. 

37. Type Test Certificate: 

i) Tenderers must submit attested/ certified copy of complete volume of type test 

(iv) 

(v) 

(iv) 

certificates (short ckt & Lightning Impulse withstand voltage test) as per relevant ISS issued 

from CPRI / ERDA, Vadodara / National Test House Govt. of India, only for the tendered 

item, failing which the tender shall be rejected. The copy of test certificates must contain 

approved drawings, test report no & date, name of test, name of material, rating, transformer 

serial no etc. 



Specification (GTP) of the offered transformer must conform to the specification of the NIT, 


If the offered item [Guaranteed Technical Particulars (GTP)] is not proto-type of type tested design 

but conforming the technical specification of NIT, then one transformer will randomly be selected and 

sealed by the Inspecting Authority of JSEB, at the time of pre-despatch inspection, from the 

59

manufactured and offered 1 st lot and the tenderer would have to get this transformer type tested at CPRI 

at their own cost. In such case 90% (ninety percent) payment of ordered value shall be made only after 

adherence of clause # 27 of tender and balance 10% (ten percent) payment shall be released after 

submission of successful type test reports. In case of failure of type-test, order will be cancelled for entire 

quantity & BG submitted at the time of payment shall be encashed and firm will be allowed to take back 

entire supplied transformers against above order at their cost. If offered item is proto type of type tested 

design, then fresh type test is not required, as offered design is already type-tested. 

38. Bank Guarantee for repairs of equipments / materials at the supplier’s works: 

In case the equipment fails, within the guarantee period and the same is required to be taken back to 

the supplier’s factory, the same shall be covered up by suitable Bank Guarantee of any 

Nationalised Bank of equivalent cost of equipment for period required for replacement. Further 

Bank Guarantee shall be furnished by the supplier within one week’s time on hearing from the 

consignees. He shall not lift the damaged/rejected equipment from our store unless the approval of 

acceptance of Bank Guarantee is received from our Deputy Director of Accounts (HQ). 

39. Guarantee Period: 

The materials shall be guaranteed for satisfactory performance and against defective or low quality 

materials and bad workmanship for minimum 24 months from the date of commissioning 

or minimum 30 months from the date of delivery in stores, whichever is earlier. If during the 

guarantee period the goods are found defective or defects observed in service, the same will be 

replaced/ repaired by the supplier free of all the charge within one month on receipt of intimation. In 

case defective stores/ materials are not replaced / rectified as per the above guarantee clause, the 

Board shall recover an equivalent amount plus 15% supervision charges from any of the bills/ Bank 

Guarantee. 

40. BEE Enrollment Certificate: 

Bidder must submit enrollment certificate of Bureau of Energy Efficiency (BEE), New Delhi with the 

offer for manufacturing 03 star rating 100 KVA Distribution Transformer valid on the due date of tender 

(i.e., on the date of opening of part-I), failing which offer will be rejected. 

However the SSI unit of Jharkhand, registered for the tendered item, who submits copy 

of type test report as per NIT & whose type test report conforms to the technical specification of 

NIT and also submit copy of applied for certificate of BEE with the offer, is allowed to submit 

final BEE enrollment certificate of tendered item, before opening of price part, failing which 

their offer of price part will not be opened. However, such relaxation does not absolve them 

from any other contractual obligation, of NIT, what so ever. 

41. Re-inspection Charge: 

Re-inspection charges as applicable shall be leviable in case it is found at the time of inspection at 

the works of the bidder that: 

a) The material /item/equipments was not ready for inspection and the inspection notice given by 

supplier was fictitious. 

60

) Quantity offered for inspection is short by more than 50% from the quantity in the inspection 

call. 

d) Inspection is not arranged / not got carried out due to any reason an account of supplier. 

d) Material/ item/equipments is found not confirming to provisions of Purchase order/ GTP/ 

relevant BIS and thus rejected by inspecting officer. 

e) Manufacturing defects are observed during physical/ visual inspection/ checking. 

f) Quantity of item not found as per provisions of Purchase order. 

42. Termination of Contract: 

Note: a) 

61 

Or 

Or 

In case the contractor/ supplier fails to deliver the materials or any consignment there of within 

contracted period of delivery or in case the materials are found not in accordance with the prescribed 

specification the Board shall exercise its discretionary power either: 

A) To recover from the supplier the damages as provided in the penalty of general conditions of 

tender for supply under clause 11. 

Or 

B) To Purchase elsewhere after giving due notice to the supplier on account and at the risk & 

cost of supplier such material not so delivered or other of similar description without 

canceling the contract in respect of consignment not yet due for delivery. 

C) To cancel the contract reserving Board’s right to recover damages. 

Or 

Notwithstanding the powers, under (a), (b), (c) referred above are in addition to the rights 

and remedy available to this Board under the General Law of India relating to contracts. 

In the event of risk purchase of stores of similar description, the option of the Board shall be 

final. In the event of action taken under (a) or (b) above, the supplier shall be liable for any 

loss which the Board sustain on the account but the supplier shall not be entitled to any 

saving on such purchases made against default. 

c) The decision of the Board shall be final as regards the acceptability of the stores 

supplied by the supplier on the Board shall not be required to give any reason in writing or 

otherwise at any time for the rejection of the materials. 

43. No documents submitted by bidders after opening of the tender (Part-I) on their own shall be 

accepted, unless and until asked for. 

44. The tenderer must get all documents inclusive of their covering letter PAGINATED and INDEXED 

and mention their number in the covering letter in WORDS. Also all the documents 

MUST bear the signature of the person who signed in the covering letter followed with the stamp of 

the tenderer. Overwriting / cut mark / use of whitener must not be done in all documents; otherwise 

the offer of the bidder may stand cancelled. 

45. The Board reserves the right to reject the lowest or any of the tender either in whole or in part without 

assigning any reason.

46. Factory Inspection: 

Board’s officer/ authorized representative may inspect the factory regarding availability of adequate 

manufacturing and testing facilities for producing quality materials in case tenderers being considered for 

placement of order by the Board. 

47. General: 

Please again note that in incomplete offer not having specific comments on all the points of our 

specification and not supported by various information desired in our specifications shall be rejected 

out-right and no further correspondence shall be made with the supplier in respect of their offer 

which causes delay in finalizing the tender. 

48. Governing Language: 

The Contract shall be written in English or Hindi and shall be interpreted in accordance with the 

laws of the union of India. 

49. Jurisdiction of Court: 

The civil court Ranchi shall alone have an exclusive jurisdiction to decide any difference/ dispute/ 

cases for and against JSEB/ Contractors/ Suppliers arising out of or in respect of the NIT, or contract 

agreement, or Purchase order. 

50. The Board reserves the right to distribute the materials among successful bidders depending upon the 

offered delivery schedule as per the requirement. 

51. The Board reserves the right to cancel full or part of the awarded contract without assigning any 

reason of those firms which will be found defaulter for delay in supply of materials or his supply or 

his supply sub-standard quality of the materials or whose design parameters are considered 

technically inferior. 

52. The Board reserves the right to change/enlist/delete the specification/GTP of NIT till before opening 

of part-I, for which, bidder will be given due opportunity for submission of their fresh bids/revised 

bids. 

Enclosure - 

(i) 

(ii) 

(iii) 

(iv) 

(v) 

(vi) 

(xiv) 

(xv) 

(xvi) 

(xvii) 

(xviii) 

(xix) 

(xx) 

Annexure ‘A’, 

Annexure ‘B’, 

Annexure ‘C’ 

Annexure ‘D’ 


Annexure ‘F’ 

Annexure ‘G’ 

Annexure ‘H’ 

Annexure ‘I’ 

Annexure ‘J’ 

Annexure ‘k’ 

Annexure ‘L’ 

Annexure ‘M’ 

Electrical Superintending Engineer (Purchase) 

JSEB Ranchi 

62



FAX NO. 0651 – 2400799 


Annexure – ‘A’ 

; 

The following conditions are to be strictly fulfilled by the firm while submitting their tenders:- 

1. Tenders not accompanied by the prescribed earnest money will be rejected outright. The firm 

registered with DGS&D/ Registered with NSIC under single point registration /Permanently 

registered with department of Industries, Govt. of Jharkhand and also registered with NSIC for 

manufacture of the item/ Undertaking of Govt. of Jharkhand/ Govt. of India are however 

exempted but for the proof of registration certified or attested copy should be submitted together 

with documentary evidence of validity period on the due date of tender alongwith the tender. 

Otherwise tender shall be liable to be rejected. 

2. Tenderer has to accept the Guarantee clause, penalty clause, payment terms and security clause 

as per the terms and conditions of the tender otherwise tender will be considered as invalid. 

3. The offers, which are not kept valid for acceptance, for at least 90 days from the date of opening 

of tenders, will be rejected. 

4. Conditional/ Incomplete tenders which do not contain full details, technical particulars, literature 

test certificates, performance report, price of all equipments delivery period etc. will be rejected, 

GTP must be filled up item wise. Incomplete or mentioning ‘as per ‘IS’ shall not be acceptable. 

5. The prices are specifically asked to be submitted as FOR destination and are not so furnished, 

the tender shall not be considered as valid and will be rejected. 

6. Tender, which is not submitted in the Board’s prescribed proforma shall be rejected. Any 

additional particulars can be furnished in the accompanying letter of Statement. 

7. Tender received in this Office after the due date and time shall be rejected. 

8. Prices must be indicated bold in figure and Words failing which the tender may be rejected. 

9. Tenderers have to quote Firm price only. 

10. Drawing of equipments must be submitted, failing which the tender may be liable for rejected. 

11. 100 kVA distribution transformer are to be delivered along with suitable 3 (three) nos. of 

9 kV /11 kV Metal oxide Lightning Arresters with G I earth strip fixed with the transformer. 

Tenderer must quote the price of 100 kVA distribution transformer along with the cost of the 

lightning arresters. 

12. Specification of the offered item must conform to the technical specification of NIT, failing 

which the offer shall be rejected. 

13. Tenderers have to submit their Bid in SOFT copy (CD-R-Type) also besides Hard copy. 

Price part will be in Hard copy only in duly sealed envelope as said earlier; price part given in 

CD will be outrightly rejected. In case of any discrepancies observed between HARD copy & 

SOFT copy of bid documents, content of Hard copy shall prevails. 

Electrical Superintending Engineer (PUR) 

JSEB, Ranchi. 

63



FAX NO. 0651 – 2400799 

Annexure ‘B’ 


STANDARD TECHNICAL SPECIFICATION 

FOR 

OUTDOOR TYPE THREE PHASE OIL IMMERSED 

(INCLUDING COMPLETELY SELF PROTECTED) 

type tested, 03 star,11kV/433V, Al Wd, stack type, 

CRGO core, 100 KVA RATING DISTRIBUTION 

TRANSFORMERS with Lightning arresters (LA). 

64

TECHNICAL SPECIFICATION FOR OUTDOOR TYPE 

DISTRIBUTION TRANSFORMERS 11 kV/433 V (100 KVA rating) 

1 SCOPE: 

1.1 This specification covers design, engineering, manufacture, assembly, stage testing, inspection and 

testing before supply and delivery at site of oil immersed, naturally cooled 3 phase 11 kV/433 V 

distribution transformers for outdoor use. 

1.2 It is not the intent to specify completely herein all the details of the design and construction of 

equipment. However the equipment shall conform in all respects to high standards of engineering, 

design and workmanship and shall be capable of performing in continuous commercial operation, in a 

manner acceptable to the purchaser, who will interpret the meanings of drawings and specification and 

shall have the power to reject any work or material which, in his judgment is not in accordance 

therewith. The offered equipment shall be complete with all components necessary for their effective 

and trouble free operation. Such components shall be deemed to be within the scope of bidder's supply 

irrespective of whether those are specifically brought out in this specification and / or the commercial 

order or not. 

1.3 The transformer and accessories shall be designed to facilitate operation, inspection, maintenance and 

repairs. The design shall incorporate every precaution and provision for the safety of equipment as well 

as staff engaged in operation and maintenance of equipment. 

1.4 All outdoor apparatus, including bushing insulators with their mountings, shall be designed so as to 

avoid any accumulation of water. 

2 STANDARD RATINGS: 

2.1 The standard ratings shall be 100 KVA for 11 kV distribution transformers. 

3 STANDARDS: 

3.1 The materials shall conform in all respects to the relevant Indian/International Standards, with latest 

amendments thereof unless otherwise specified herein. Some of them are listed below: 

Indian 

Standard 

Title 

IS -2026 Specification for Power Transformers IEC76 

IS -1180 

Outdoor distribution Transformer up to and including 100KVA 

65 

International and 

Internationally recognized 

standards 

IS-335 Specification for Transformer Oil BS 148, D-1473, D-1 533-1 

934 IEC Pub 296 

IS- 5 

Specification for colors for ready mixed paints 

IS -104 

IS - 2099 

IS - 649 

IS -4257 

IS -7421 

Ready mixed paint, brushing zinc chromate, priming 

Specification for high voltage porcelain bushing 

Testing for steel sheets and strips and magnetic circuits 

Dimensions for clamping arrangements for bushings 

Specification for Low Voltage bushings 

IS - 3347 Specification for Outdoor Bushings DIN 42531 to 33 

IS - 5484 Specification for Al Wire rods ASTM B-233 

IS - 9335 Specification for Insulating Kraft Paper IEC 554 

IS -1576 Specification for Insulating Press Board. IEC 641

IS - 6600 Guide for loading of oil Immersed Transformers I EC 76 

IS - 2362 

IS -6162 

IS -6160 

IS- 5561 

IS -6103 

IS - 6262 

Determination of water content in oil for porcelain bushing of 

transformer 

Paper covered aluminium conductor 

Rectangular Electrical conductor for electrical machines 

Electrical power connector 

Testing of specific resistance of electrical insulating liquids 

Method of test for power factor and dielectric constant of 

electrical insulating liquids 

IS - 6792 

IS -10028 

Determination of electrical strength of insulating oil 

Installation and maintenance of transformers. 

3.2 Material conforming to other internationally accepted standards, which ensure equal or better quality 

than the standards mentioned above, would also be acceptable. In case the bidders who wish to offer 

material conforming to other standards, the bidder shall clearly bring out the salient points of 

difference between the standards adopted and the specific standards in relevant schedule. Four copies 

of such standards with authentic English translations shall be furnished along with the offer. 

However, the decision of Board, in this regard, shall be final. 

4. SERVICE CONDITIONS: 

4.1 The Distribution Transformers to be supplied against this Specification shall be suitable for 

satisfactory continuous operation under the following climatic conditions as per IS 2026 (Part -1). 

i Location : At various locations in the State of Jharkhand 

ii Maximum ambient air temperature (°C) : 50 

iii Minimum ambient air temperature (°C) : -5 

iv Maximum average daily ambient : 40 

air temperature (°C) 

v Maximum yearly weighted average : 32 

ambient temperature(°C) 

vi Maximum altitude above mean : 1000 meters 

sea level (Metres) 

Note: 

1 The equipment shall generally be for use in moderately hot and humid tropical climate, conducive to 

rust and fungus growth unless otherwise specified. 

5 PRINCIPAL PARAMETERS: 

5.1 The transformers shall be suitable for outdoor installation with three phase, 50 Hz, 11 kV system in 

which the neutral is effectively earthed and they should be suitable for service with fluctuations in 

supply voltage upto 12.5% to minus 12.5%. 

5.2 The transformers shall conform to the following specific parameters : 

SI.No. Item 11 kV Distribution Transformers 

1 System voltage (max.) 12 kV 

2 Rated voltage HV 11 kV 

3. Rated voltage LV 433 - 250 V 

66

4. Frequency 50 Hz +/- 5% 

5 No. of Phases Three 

6 Connection HV Delta 

7 Connection LV Star (Neutral brought out) 

8. Vector group Dyn-11 

9. Type of cooling ONAN 

10. Continuous capacity 100 KVA 

Audible sound levels (decibels) at rated voltage and frequency for liquid immersed distribution 

transformers shall be as below (NEMA Standards): 

kVA rating Audible sound levels (decibels) 

51-100 51 

6 TECHNICAL REQUIREMENTS: 

6.1.1 CORE MATERIAL – CRGO 

6.1.2 CRGO Material 

6.1.2.1 The core shall be stack type of high grade cold rolled grain oriented annealed steel lamination 

having low loss and good grain properties, coated with hot oil proof insulation, bolted together and 

to the frames firmly to prevent vibration or noise. The core shall be stress relieved by annealing 

under inert atmosphere if required. The complete design of core must ensure permanency of the 

core loss with continuous working of the transformers. The value of the maximum flux density 

allowed in the design and grade of lamination used shall be clearly stated in the offer. 

6.1.2.2 The bidder should offer the core for inspection and approval by the purchaser during manufacturing 

stage. 

6.1.2.3 The transformers core shall be suitable for over fluxing (due to combined effect of voltage and 

frequency) up to 12.5% without injurious heating at full load conditions and shall not get saturated. 

The bidder shall furnish necessary design data in support of this situation. 

6.1.2.4 No-load current shall not exceed 3% of full load current and will be measured by energising the 

transformer at 433 volts, 50 Hz on the secondary. Increase of voltage of 433 volts by 12.5% shall 

not increase the no-load current by 6% (maximum) of full load current. 

7. WINDINGS: 

7.1 Material: 

7.1.1 HV and LV windings shall be wound from Double Paper covered , aluminium conductor /strip. 

7.1.2 LV winding shall be such that neutral formation will be at top. 

7.1.3 The winding construction of single HV coil wound over LV coil is preferable 

7.1.4 Inter layer insulation shall be Nomex /Epoxy dotted Kraft Paper. 

7.1.5 Current density for HV and LV winding should not be more than 1.6 Ampere per sq mm for 

Aluminium Conductor. 

7.1.6 The core/coil assembly shall be securely held in position to avoid any movement under short circuit 

conditions. 

7.1.7 Joints in the winding shall be avoided. However, if jointing is necessary the joints shall be properly 

67

8 TAPS: 

brazed and the resistance of the joints shall be less than that of parent conductor. In case of foil 

windings, welding of leads to foil can be done within the winding. 

8.1 No tapping shall be provided for transformers up to 200 kVA rating. 

9. OIL: 

9.1 The insulating oil shall comply with the requirements of IS 335 or BS 148. 

Use of recycled oil is not acceptable. The specific resistance of the oil shall not be less than 2.5 

X10 12 ohm-cm at 27 °C when tested as per IS 6103. 

9.2 Oil shall be filtered and tested for break down voltage (BDV) and moisture content before filling. 

9.3 The oil shall be filled under vacuum. 

9.4 The design and all materials and processes used in the manufacture of the transformer, shall be such 

as to reduce to a minimum the risk of the development of acidity in the oil. 

10 INSULATION LEVELS: 

SI. No. Voltage (kV) 

Impulse Voltage (kV 

Peak) 

1 0.433 - 3 

2 11 95 28 

Power Frequency Voltage 

(kV) 

11 LOSSES: 

11.1 The bidder shall guarantee individually the no-load loss and load loss without any positive tolerance. 

The bidder shall also guarantee the total losses at 50% and 100% load condition (at rated voltage and 

frequency and at 75 °C). 

11.2 The maximum allowable losses at rated voltage and rated frequency permitted at 75 °C for 11/0.433 

kV transformers can be chosen by the utility from the values of 3 star rating as indicated below: 

Rating 

(kVA) 

Voltage Ratio 

3 Star 


(Watts) 

11 000/433 -250V 100 520 1800 


(Watts) 

Bids with higher losses than the above specified values would be treated as non-responsive. 

However, the manufacturer can offer losses less than above. 

12. TOLERANCES: 

12.1 No positive tolerance shall be allowed on the maximum losses displayed on the label for both 

50% and 100% loading values. 

13. PERCENTAGE IMPEDANCE: 

13.1 The value of impedance of transformers at 75 °C shall be 4.5% with tolerance in accordance with IS 

2026. 

14. Temperature rise: The temperature rise over ambient temp. (50 Degree Centigrade) shall not exceed 

the limits given below: 

14.1 Top oil temperature rise measured by thermometer : 35 °C 

14.2 Winding temperature rise measured by resistance method : 40 °C 

68

Bids not meeting the above limits of temperature rise will be treated as non-responsive. 

14.3 The transformer shall be capable of giving continuous rated output without exceeding the specified 

temperature rise. Bidder shall submit the calculation sheet in this regard. 

15. PENALTY FOR NON PERFORMANCE: 

15.1 During testing at supplier's works if it is found that the actual measured losses are more than 

the values quoted by the bidder, the purchaser shall reject the transformer and he shall also 

have the right to reject the complete lot. 

15.2 Purchaser shall reject the entire lot during the test at supplier's works, if the temperature rise 

exceeds the specified values. 

15.3 Purchaser shall reject any transformer during the test at supplier's works, if the impedance 

values differ from the guaranteed values including tolerance. 

16. INSULATION MATERIAL: 

16.1 Electrical grade insulation epoxy dotted Kraft Paper/Nomex and pressboard of standard make or any 

other superior material subject to approval of the purchaser shall be used. 

17. TANK 

16.2 All spacers, axial wedges / runners used in windings shall be made of pre-compressed Pressboardsolid, 

conforming to type B 3.1 of IEC 641-3-2. In case of cross-over coil winding of HV all spacers 

shall be properly sheared and dovetail punched to ensure proper locking. All axial wedges / runners 

shall be properly milled to dovetail shape so that they pass through the designed spacers freely. 

Insulation shearing, cutting, milling and punching operations shall be carried out in such a way, that 

there should not be any burr and dimensional variations. 

17.1 The internal clearance of tank shall be such, that it shall facilitate easy lifting of core with coils from 

the tank without dismantling LV bushings. 

17.2 All joints of tank and fittings shall be oil tight and no bulging should occur during service. 

17.3 Inside of tank shall be painted with varnish/hot oil resistant paint. 

17.4 The top cover of the tank shall be slightly sloping to drain rain water. 

17.5 The tank plate and the lifting lugs shall be of such strength that the complete transformer filled with 

oil may be lifted by means of lifting shackle. 

17.6 Manufacturer should carry out all welding operations as per the relevant ASME standards and submit 

a copy of the welding procedure and welder performance qualification certificates to the customer. 

17.2 PLAIN TANK: 

17.2.1 The transformer tank shall be of robust construction rectangular/octagonal/round/ elliptical in shape 

and shall be built up of electrically tested welded mild steel plates of thickness of 5.00 mm for the 

bottom and top and not less than 3.15 mm for the sides for distribution transformers upto and 

including 100 kVA. 

thickness shall be allowed. 

No negative tolerance than the above prescribed limits in the tank 

17.2.2 In case of transformers of 100 kVA and below, there shall be no joints at corners and there shall not 

be more than 2 joints in total. 

17.2.3 Under operating conditions the pressure generated inside the tank should not exceed 0.4 kg/ sq. cm 

positive or negative. There must be sufficient space from the core to the top cover to take care of oil 

expansion. The space above oil level in the tank shall be filled with dry air or nitrogen conforming to 

commercial grade of IS 1747. 

69

17.2.4 The tank shall be reinforced by welded flats on all the outside walls on the edge of the tank. 

17.2.5 Permanent deflection: The permanent deflection, when the tank without oil is subjected to a vacuum 

of 525 mm of mercury for rectangular tank and 760 mm of mercury for round tank, shall not be more 

than the values as given below: 

Horizontal length of flat plate 

Permanent deflection 

(All figures in mm) 

Up to and including 750 5.0 

751 to 1250 6.5 

1251 to 1750 8.0 

1751 to 2000 9.5 

2001 to 2250 11.0 

2251 to 2500 12.0 

2501 to 3000 16.0 

Above 3000 19.0 

17.2.6 The tank shall further be capable of withstanding a pressure of 0.8 kg/ sq.cm (g) and a vacuum of 

0.7 kg/sq.cm (g) without any deformation. 

17.2.7 The radiators can be tube type or fin type or pressed steel type to achieve the desired cooling to 

limit the specified temperature rise. 

18 CONSERVATOR: 

18.1 The conservator shall be provided on transformers of rating 63 kVA and above for plain tank. 

18.2 When a conservator is provided, oil gauge and the plain or dehydrating breathing device shall be 

fitted to the conservator which shall also be provided with a drain plug and a filling hole [32 mm 

(1%")] normal size thread with cover. In addition, the cover of the main tank shall be provided 

with an air release plug. 

18.3 The dehydrating agent shall be silica gel. The moisture absorption shall be indicated by a change 

in the colour of the silica gel crystals which should be easily visible from a distance. Volume of 

breather shall be suitable for 500g of silica gel conforming to IS 3401 for transformers upto 200 

kVA. 

18.4 The capacity of a conservator tank shall be designed keeping in view the total quantity of oil and 

its contraction and expansion due to temperature variations. The total volume of conservator shall 

be such as to contain 10% quantity of the oil. Normally 3% quantity the oil shall be contained in 

the conservator. 

18.5 The cover of main tank shall be provided with an air release plug to enable air trapped within to be 

released, unless the conservator is so located as to eliminate the possibility of air being trapped 

within the main tank. 

18.6 The inside diameter of the pipe connecting the conservator to the main tank should be within 20 to 

50 mm and it should be projected into the conservator so that its end is approximately 20 mm 

above the bottom of the conservator so as to create a sump for collection of impurities. The 

minimum oil level (corresponding to -5 °C) should be above the sump level. 

70

19 SURFACE PREPARATION AND PAINTING: 

19.1 GENERAL 

19.1.1 All paints, when applied in a normal full coat, shall be free from runs, sags, wrinkles, patchiness, 

brush marks or other defects. 

19.1.2 All primers shall'be well marked into the surface, particularly in areas where painting is evident 

and the first priming coat shall be applied as soon as possible after cleaning. The paint shall be 

applied by airless spray" according to manufacturer's recommendations. However, where ever 

airless spray is not possible, conventional spray be used with prior approval of purchaser. 

19.2 CLEANING AND SURFACE PREPARATION: 

19.2.1 After all machining, forming and welding has been completed, all steel work surfaces shall be 

thoroughly cleaned of rust, scale, welding slag or spatter and other contamination prior to any 

painting. 

19.2.2 Steel surfaces shall be prepared by shot blast cleaning (IS9954) to grade Sq. 2.5 of ISO 8501 -1 or 

chemical cleaning including phosphating of the appropriate quality (IS 3618). 

19.2.3 Chipping, scraping and steel wire brushing using manual or power driven tools cannot remove 

firmly adherent mill-scale. These methods shall only be used where blast cleaning is impractical. 

Manufacturer to clearly explain such areas in his technical offer 

19.3 PROTECTIVE COATING: 

19.3.1 As soon as all items have been cleaned and within four hours of the subsequent drying, they shall 

be given suitable anti-corrosion protection. 

19.4 PAINT MATERIAL: 

19.4.1 Following are the types of paint which may be suitably used for the items to be painted at shop and 

supply of matching paint to site: 

Heat resistant paint (Hot oil proof) for inside surface 

19.4.2 For external surfaces one coat of thermo setting powder paint or one coat of epoxy primer 

followed by two coats of synthetic enamel/polyurethene base paint. These paints can be either air 

drying or stoving. 

19.4.3 For highly polluted areas, chemical atmosphere or for places very near to the sea coast, paint as 

above with one coat of high build Micaceous iron oxide (MIO) as an intermediate coat may be 

used. 

19.5 PAINTING PROCEDURE: 

19.5.1 All prepared steel surfaces should be primed before visible re-rusting occurs or within 4 hours, 

whichever is sooner. Chemical treated steel surfaces shall be primed as soon as the surface is dry 

and while the surface is still warm. 

19.5.2 Where the quality of film is impaired by excess film thickness (wrinkling, mud cracking or general 

softness) the supplier shall remove the unsatisfactory paint coating and apply another coating. As a 

general rule, dry film thickness should not exceed the specified minimum dry film thickens by 

more than 25%. 

19.6 DAMAGED PAINTWORK: 

19.6.1 Any damage occurring to any part of a painting scheme shall be made good to the same standard 

71

of corrosion protection and appearance as that was originally applied. 

19.6.2 Any damaged paint work shall be made good as follows: 

19.6.2.1 The damaged area, together with an area extending 25 mm around its boundary, shall be cleaned 

down to bare metal. 

19.6.2.2 A priming coat shall be immediately applied, followed by a full paint finish equal to that originally 

applied and extending 50 mm around the perimeter of the original damage. 

19.6.2.3 The repainted surface shall present a smooth surface. This shall be obtained by carefully 

chamfering the paint edges before and after priming. 

19.7 DRY FILM THICKNESS: 

19.7.1 To the maximum extent practicable the coats shall be applied as a continuous film of uniform 

thickness and free of pores. Overspray, skips, runs, sags and drips should be avoided. The different 

coats may or may not be of the same colour. 

19.7.2 Each coat of paint shall be allowed to harden before the next is applied as per manufacturer's 

recommendation. 

19.7.3 Particular attention must be paid to full film thickness at the edges. 

19.7.4 The requirements for the dry film thickness (DFT) of paint and the materials to be used shall be as 

given below: 

SI. No. Paint type Area to be painted No. of Total dry film thickness (min.) 

coats (microns) 

1. Thermo setting powder paint inside outside 01 01 30 60 

2. 

Liquid paint 

a) Epoxy (primer) outside 01 30 

b) P.U. Paint (Finish coat) outside 02 25 each 

c) Hot oil paint/ Varnish inside 01 35/10 

19.8 TESTS FOR PAINTED SURFACE: 

19.8.1 The painted surface shall be tested for paint thickness. 

19.8.2 The painted surface shall pass the cross hatch adhesion test and impact test as acceptance tests and 

Note 

Salt spray test and Hardness test as type test as per the relevant ASTM standards. 

Supplier shall guarantee the painting performance requirement for a period of not less than 

2.5 years. 

20 BUSHINGS: 

20.1 The bushings shall conform to the relevant standards specified and shall be of outdoor type. The 

bushing rods and nuts shall be made of brass material 12 mm diameter for both HT and LT 

bushings. For transformers of 100 kVA and below the bushing can be mounted on pipes. The tests 

as per latest IS 2099 and IS 7421' shall be conducted on the transformer bushings. 

20.2 For 11 kV, 17.5 kV class bushings and for 0.433 kV, 1.1 kV class bushings shall be used. 

20.3 Bushing can be of porcelain/epoxy material. Polymer insulator bushings conforming with relevant I 

EC can also be used. 

20.4 Bushings of plain shades as per IS 3347 shall be mounted on the side of the Tank and not on top 

cover. 

20.5 Dimensions of the bushings of the voltage class shall conform to the Standards specified and 

dimension of clamping arrangement shall be as per IS 4257. 

72

20.6 Minimum external phase to phase and phase to earth clearances of bushing terminals shall be as follows: 

Voltage 

Clearance 

Phase to phase 

Phase to earth 

11 kV 255 mm 140 mm 

LV 75 mm 40 mm 

20.7 Arcing horns shall be provided on HV bushings. 

20.8 Brazing of all inter connections, jumpers from winding to bushing shall have cross section larger 

than the winding conductor. All the Brazes shall be qualified as per ASME, section – IX. 

20.9 The bushings shall be of reputed make supplied by those manufacturers who are having 

manufacturing and testing facilities for insulators. 

20.10 The terminal arrangement shall not require a separate oil chamber not connected to oil in the main 

tank. 

21 TERMINAL CONNECTORS: 

21.1 The LV and HV bushing stems shall be provided with suitable terminal connectors as per IS 5082 

so as to connect the jumper without disturbing the bushing stem. Connectors shall be with eye 

bolts so as to receive conductor for HV. Terminal connectors shall be type tested as per IS 5561. 


22.1 9 kV, 5 kA metal oxide lightning arresters of reputed make conforming to IS 3070 Part-Ill, one 

number per phase shall be provided.(To be fitted under the HV bushing with Gl earth strip 25x4 

mm connected to the body of the transformer with necessary clamping arrangement) Lightening 

arrestors with polymer insulators in conformance with relevant IEC can also be used. 

23 TERMINAL MARKINGS: 

23.1 High voltage phase windings shall be marked both in the terminal boards inside the tank and on 

the outside with capital letter 1U, 1V, 1W and low voltage winding for the same phase marked by 

corresponding small letter 2u, 2v, 2w. The neutral point terminal shall be indicated by the letter 

2n. Neutral terminal is to be brought out and connected to local grounding terminal by an earthing 

strip. 

24 FITTINGS: 

24.1 The following standard fittings shall be provided : 

i 

ii 

iii 

iv 

v 

vi 

vii 

viii 

ix 

x 

xi 

Rating and terminal marking plates, non-detachable. 

Earthing terminals with lugs - 2 Nos. 

Lifting lugs for main tank and top cover 

Terminal connectors on the HV/LV bushings (For bare terminations only). 

Thermometer pocket with cap -1 No. 

Air release device 

HV bushings - 3 Nos. 

LV bushings - 4 Nos 

Pulling lugs 

Stiffener 

Radiators - Number. and length may be mentioned (as per heat dissipation calculations)/ 

73

xii 

xiii 

xiv 

xv 

xvi 

xvii 

xviii 

xix 

corrugations. 

9 kV, 5 kA lightning arresters on HT side - 3 No. 

Prismatic oil level gauge, 

Drain cum sampling valve, 

Top filter valve 

Oil filling hole having p. 1 - %" thread with plug and drain plug on the conservator. 

Silica gel breather 

Base channel 75x40 mm for up to 100 kVA, 460 mm long with holes to make them suitable for 

fixing on a platform or plinth. 

Pressure relief device or explosion vent. 

25 FASTENERS: 

25.1 All bolts, studs, screw threads, pipe threads, bolt heads and nuts shall comply with the appropriate 

Indian Standards for metric threads, or the technical equivalent. 

25.2 Bolts or studs shall not be less than 6 mm in diameter except when used for small wiring 

terminals. 

25.3 All nuts and pins shall be adequately locked. 

25.4 Wherever possible bolts shall be fitted in such a manner that in the event of failure of locking 

resulting in the nuts working loose and falling off, the bolt will remain in position. 

25.5 All ferrous bolts, nuts and washers placed in outdoor positions shall be treated to prevent 

corrosion, by hot dip galvanising, except high tensile steel bolts and spring washers which shall 

be electro-galvanised / plated. Appropriate precautions shall be taken to prevent electrolytic 

action between dissimilar metals. 

25.6 Each bolt or stud shall project at least one thread but not more than three threads through the nut, 

except when otherwise approved for terminal board studs or relay stems. If bolts and nuts are 

placed so that they are inaccessible by means of ordinary spanners, special spanners shall be 

provided. 

25.7 The length of the screwed portion of the bolts shall be such that no screw thread may form part of 

a shear plane between members. 

25.8 Taper washers shall be provided where necessary. 

25.9 Protective washers of suitable material shall be provided front and back of the securing screws. 

26 OVERLOAD CAPACITY 

26.1 The transformers shall be suitable for loading as per IS 6600. 

27 COMPLETELY SELF PROTECTED (CSP) TRANSFORMERS: 

27.1 CSP transformers must be provided for ratings up to 200 kVA 

28 PROTECTION FEATURES: 

28.1 External Weather proof HV fuse on the HV side of transformer. 

28.1.1 The fuse is mounted normally inside of the primary bushing for the three phases and is connected 

to the high voltage winding through a terminal block. This has to protect that part of the electrical 

distribution system which is ahead of the distribution transformers from faults which occur inside 

the distribution transformer i.e., either in the windings or some other part of the transformer. It 

shall be ensured that this fuse does not blow for faults on the secondary side (LT side) of the 

transformer i.e., the blowing characteristics of the fuse and LT breaker shall be so coordinated 

74

such that the fuse shall not blow for any faults on the secondary side of the transformer beyond 

LT breakers and those faults shall be cleared by the LT breaker only. 

28.2 Externally weather proof Mounted LT Breaker on the LV Side of the Transformer: 

28.2.1 3 Pole LT circuit breaker: All LT faults after the breaker shall be cleared by this breaker. As such 

it shall be designed for perfect coordination with the HT fuse link. The bidder shall furnish the 

time / current characteristics of LT circuit breaker and 11 kV fuses for various current 

multiples. 

28.2.2 The two characteristics shall be drawn on the same sheet to indicate coordination between the 

circuit breaker and fuse. The bidder shall carry out coordination test as indicated above and this 

forms one of the tests for acceptance test. 

28.2.3 The breaker shall be coordinated thermally with the transformer design to follow closely the 

variations of oil temperature due to fluctuating loads and ambient temperatures. 

28.2.4 Arrangements shall be provided to enable the circuit breaker to be closed and opened 

manually standing on ground. 

28.2.5 The cross section of the current carrying parts of the breaker shall withstand the full load current 

at a current density not more than 2.5 A/sq. mm (for additional mechanical strength the area 

should be more). 

28.2.6 Rated short circuit breaking capacity of the breaker shall not be less than 2.5 kA. The circuit 

breaker shall confirm to IS 13947. 

29 LOAD MANAGEMENT SIGNAL LIGHT: 

29.1 A signal light shall be provided to give information about the loading condition of the 

transformer. It shall forewarn any overloading problem at the installation such that replacement of 

the existing transformer with a higher capacity transformer can be planned. The signal light 

mechanism shall not reset itself when the load drops from the overloaded condition. The signal 

light shall remain lighted once the signal light contacts close due to overload and can be turned 

off by manual operation. (The signal light shall not give indication for momentary overloading). 

Loading indication shall be available in adjustable steps of 10% starting from 70% to 110% 


30.1 9 kV, 5 kA metal oxide lightning arrestors Distribution class type of reputed make as per relevant 

31 TESTS: 

standard, one number per phase shall be provided to be fitted under the HV bushing with Gl earth 

strip 25x4 mm connected to the body of the transformer with necessary clamping arrangement. 

31.1 All the equipment offered shall be fully type tested by the bidder or his collaborator as per the 

relevant standards including the additional type tests. The type test must have been conducted on 

a transformer of same design at the time of bidding. The bidder shall furnish two sets of type test 

reports along with the offer. Offers without type test reports will be treated as non-responsive. 

31.2 Special tests other than type and routine tests, as agreed between purchaser and bidder shall also 

be carried out as per the relevant standards 

31.3 The requirements of site tests are also given in this clause. 

31.4 The test certificates for a!! routine and type tests for the transformers and also for the bushings 

and transformer oil shall be submitted with the bid. 

31.5 The procedure for testing shall be in accordance with IS1180/2026 as the case may be except for 

temperature rise test. 

31.6 Before despatch each of the completely assembled transformers shall be subjected to the routine 

tests at the manufacturer's works. 

75

32 ROUTINE TESTS 

32.1 Ratio, polarity, phase sequence and vector group. 

32.2 No Load current and losses at service voltage and normal frequency. 

32.3 Load losses at rated current and normal frequency 

32.4 Impedance voltage test. 

32.5 Resistance of windings at each tap, cold (at or near the test bed temperature). 

32.6 Insulation resistance. 

32.7 Induced over voltage withstand test. 

32.8 Separate source voltage withstand test. 

32.9 Neutral current measurement-The value of zero sequence current in the neutral of the star winding 

shall not be more than 2% of the full load current. 

32.10 Oil samples (one sample per lot) to comply with IS 1866. 

32.11 Measurement of no load losses and magnetizing current at rated frequency and 90%, 100% and 

110% rated voltage. 

32.12 Pressure and vacuum test for checking the deflection. 

33 TYPE TESTS 

33.1 (i) Tenderers must submit attested / certified copy of complete volume of type test certificates 

(short ckt & Lightning Impulse withstand voltage test) as per relevant ISS issued from CPRI / 

ERDA, Vadodara / National Test House Govt. of India, only for the tendered item, failing which 

the tender shall be rejected. The copy of test certificates must , contain approved drawings, test 

report no & date, name of test, name of material, rating transformer serial no etc. 

(ii) 



(iii) 

Specification of the offered transformer (GTP) must conform the specification of the NIT, 


(iv) 

If the offered item [Guaranteed Technical Particulars (GTP)] is not proto-type of type 

tested design but conforming the technical specification of NIT, then one transformer will 

randomly be selected and sealed by the Inspecting Authority of JSEB, at the time of pre-despatch 

inspection, from the manufactured and offered 1 st lot and the tenderer would have to get this 

transformer type tested afresh at CPRI at their own cost. In such case 90% (ninety percent) 

payment of ordered value shall be made only after adherence of clause # 28 of tender and balance 

10% (ten percent) payment shall be released after submission of successful type test reports. In 

case of failure of type-test, order will be cancelled for entire quantity & BG submitted at the time 

of payment shall be encashed and firm will be allowed to take back entire supplied transformers 

against above order. If offered item is proto type of type tested design, then fresh type test is not 

required, as offered design is already type-tested. 

33.2 In addition to the above type tests following additional tests may be conducted at CPRI, if Board 

desires, to do so, at the cost of the supplier. 

a. Temperature rise test for determining the maximum temperature rise after continuous full load 

run. The ambient temperature and time of test should be stated in the test certificate 

b. Air Pressure Test: As per IS - 1180. 

c. Magnetic Balance Test. 

d. Un-balanced current test: The value of unbalanced current indicated by the ammeter shall not be 

more than 2% of the full load current. 

e. Noise-level measurement. 

f. Measurement of zero-phase sequence impedance 

g. Measurement of Harmonics of no-load current for vacuum shall be tested at an internal pressure 

of 0.35 kg per sq cm absolute (250 mm of Hg) for one hour. The permanent deflection of flat 

plates after the vacuum has been released shall not exceed the values specified below: 

76

Horizontal length of flat plate (in mm) 

Permanent deflection (in mm) 

Upto and including 750 5.0 

751 to 1250 6.5 

1251 to 1750 8.0 

1751 to 2000 9.5 

2001 to 2250 11.0 

2251 to 2500 12.0 

2501 to 3000 16.0 

Above 3000 19.0 

h. Transformer tank together with its radiator and other fittings shall be subjected to pressure 

corresponding to twice the normal pressure or 0.35 kg / sq.cm which ever is lower, measured at the 

base of the tank and maintained for an hour. The permanent deflection of the flat plates after the 

excess pressure has been released, shall not exceed the figures for vacuum test. 

i. Pressure relief device test: The pressure relief device shall be subject to increasing fluid pressure. It 

shall operate before reaching the test pressure as specified in the above class. The operating 

pressure shall be recorded. The device shall seal-off after the excess pressure has been released. 

j. It may also be noted that the purchaser reserves the right to conduct short circuit test and impulse 

voltage withstand test in accordance with the IS, afresh on each ordered rating at purchaser cost, 

even if the transformers of the same rating and similar design are already tested. This test shall be 

carried out on a transformer to be selected by the purchaser either at the manufacturer's works when 

they are offered in a lot for supply or randomly from the supplies already made to purchaser's 

stores. The findings and conclusions of these tests shall be binding on the supplier. 

34. ACCEPTANCE TESTS: 

34.1 At least 10% transformers of the offered lot (minimum of one) shall be subjected to the following 

routine/ acceptance test in presence of purchaser's representative at the place of manufacture before 

dispatch without any extra charges. The testing shall be carried out in accordance with 18:1180 and 

IS:2026. 

34.2 Checking of weights, dimensions, fitting and accessories, tank sheet thickness, oil quality, material, 

finish and workmanship as per GTP and contract drawings. 

34.3 Physical verification of core coil assembly and measurement of flux density of one unit of each 

rating, in every inspection with reference to short circuit test report 

34.4 Temperature rise test on one unit of the total ordered quantity 

35 TESTS AT SITE: 

The purchaser reserves the right to conduct all tests on transformer after arrival at site and the 

manufacturer shall guarantee test certificate figures under actual service conditions. 

36. INSPECTION: 

36.1 In respect of raw material such as core stampings, winding conductors, insulating paper and oil, 

supplier shall use materials manufactured/supplied by standard manufacturers and furnish the 

manufacturers' test certificate as well as the proof of purchase from these manufacturers (excise 

gate pass) for information of the purchaser. The bidder shall furnish following documents along 

with their offer in respect of the raw materials: 

77

v. Invoice of supplier. 

vi. 

vii. 

viii. 

Mill's certificate 

Packing list. 

Bill of landing, 

v. Bill of entry certificate by custom. 

37 INSPECTION AND TESTING OF TRANSFORMER OIL: 

37.1 To ascertain the quality of the transformer oil, the original manufacturer's tests report should be 

submitted at the time of inspection. Arrangements should also be made for testing of transformer 

oil, after taking out the sample from the manufactured transformers and tested in the presence of 

purchaser's representative. 

37.2 To ensure about the quality of transformers, the inspection shall be carried out by the purchaser's 

representative at following two stages:- 

37.2.1 Online anytime during receipt of raw material and manufacture/ assembly whenever the purchaser 

desires. 

37.2.2 At finished stage i.e. transformers are fully assembled and are ready for despatch. 

37.3 The stage inspection may be carried out ,if Board, desires to do so. 

37.4 After the main raw-material i.e. core and coil material and tanks are arranged and transformers are 

taken for production on shop floor and a few assembly have been completed, the firm shall intimate 

the purchaser in this regard, so that an officer for carrying out such inspection could be deputed, as 

far as possible within seven days from the date of intimation. During the stage inspection a few 

assembled core shall be dismantled (only in case of CRGO material) to ensure that the CRGO 

laminations used are of good quality. Further, as and when the transformers are ready for despatch, 

an offer intimating about the readiness of transformers, for final inspection for carrying out tests as 

per relevant IS shall be sent by the firm along with Routine Test Certificates. The inspection shall 

normally be arranged by the purchaser at the earliest after receipt of offer for pre-delivery 

inspection. The proforma for pre delivery inspection of Distribution transformers is placed at 

Annex- ‘L’. 

37.5 In case of any defect/defective workmanship observed at any stage by the purchaser's Inspecting 

Officer, the same shall be pointed out to the firm in writing for taking remedial measures. Further 

processing should only be done after clearance from the Inspecting Officer/ purchaser. 

37.6 All tests and inspection shall be carried out at the place of manufacture unless otherwise 

specifically agreed upon by the manufacturer .and purchaser at the time of purchase. The 

manufacturer shall offer the Inspector representing the Purchaser all reasonable facilities, without 

charges, to satisfy him that the material is being supplied in accordance with this specification. This 

will include Stage Inspection during manufacturing stage as well as Active Part Inspection during 

Acceptance Tests. 

37.7 The manufacturer shall provide all services to establish and maintain quality of workman ship in his 

works and that of his sub-contractors to ensure the mechanical /electrical performance of 

components, compliance with drawings, identification and acceptability of all materials, parts and 

equipment as per latest quality standards of ISO 9000. 

37.8 Purchaser shall have every right to appoint a third party inspection to carryout the inspection 

process. 

37.9 The purchaser has the right to have the test carried out at his own cost by an independent agency 

78

wherever there is a dispute regarding the quality supplied. Purchaser has right to test 1 % of the 

supply selected either from the stores or field to check the quality of the product. In case of any 

deviation purchaser have every right to reject the entire lot or penalize the manufacturer, which may 

lead to blacklisting, among other things. 

38. QUALITY ASSURANCE PLAN: 

38.1 The bidder shall invariably furnish following information along with his bid, failing which his bid 

shall be liable for rejection. Information shall be separately given for individual type of equipment 

offered. 

38.2 Statement giving list of important raw materials, names of sub-suppliers for the raw materials, list 

of standards according to which the raw materials are tested, list of tests normally carried out on 

raw materials in the presence of bidder's representative, copies of test certificates. 

38.3 Information and copies of test certificates as above in respect of bought out accessories. 

38.4 List of manufacturing facilities available. 

38.5 Level of automation achieved and list of areas where manual processing exists. 

38.6 List of areas in manufacturing process, where stage inspections are normally carried out for quality 

control and details of such tests and inspection. 

38.7 List of testing equipment available with the bidder for final testing of equipment along with valid 

calibration reports. These shall be furnished with the bid. Manufacturer shall posses 0.1 accuracy 

class instruments for measurement of losses. 

38.8 Quality Assurance Plan (QAP) with hold points for purchaser's inspection. 

38.9 The successful bidder shall within 30 days of placement of order, submit following information to 

the purchaser: 

38.9.1 List of raw materials as well as bought out accessories and the names of sub-suppliers selected from 

those furnished along with offer. 

38.9.2 Type test certificates of the raw materials and bought out accessories. 

38.9.3 The successful bidder shall submit the routine test certificates of bought out accessories and central 

excise passes for raw material at the time of routine testing. 

39. DOCUMENTATION: 

39.1 The bidder shall furnish along with the bid the dimensional drawings of the items offered indicating 

all the fittings. 

39.2 Overall Dimensional tolerances. 

39.3 Weight of individual components and total weight. 

39.4 An outline drawing front (both primary and secondary sides) and end-elevation and plan of the tank 

and terminal gear, wherein the principal dimensions shall be given. 

39.5 Typical general arrangement drawings of the windings with the details of the insulation at each 

point and core construction of transformer. 

39.6 Typical general arrangement drawing showing both primary and secondary sides and end-elevation 

and plan of the transformer. 

40. PACKING AND FORWARDING: 

41.1 The packing shall be done as per the manufacturer's standard practice. However, it should be 

ensured that the packing is such that, the material would not get damaged during transit by Rail / 

Road / Sea. 

79

41.2 The marking on each package shall be as per the relevant IS. 

41. GUARANTEE: 

41.1 The manufacturers of the transformer shall provide a guarantee of 30 months from the date of 

receipt at the stores of the Utility or 24 months from the date of commissioning, whichever is 

earlier. In case the distribution transformer fails within the guarantee period the purchaser will 

immediately inform the supplier who shall take back the failed DT within 15 days from the date of 

the intimation at his own cost and replace/repair the transformer within forty five days of date of 

intimation with a roll over guarantee. 

41.2 The outage period i.e. period from the date of failure till unit is repaired/ replaced shall not be 

counted for arriving at the guarantee period. 

41.3 In the event of the supplier's inability to adhere to the aforesaid provisions, suitable penal action 

will be taken against the supplier which may inter alia include blacklisting of the firm for future 

business with the purchaser for a certain period. 

42 SCHEDULES: 

42.1 The bidder shall fill in the following schedule which will be part of the offer. If the schedule are not 

submitted duly filled in with the offer, the offer shall be liable for rejection. 

Annexure-‘C’ 

Annexure- ‘F’ 

43 DEVIATIONS : 

: In the Schedule of Deviations clause of techno – commercial part-I. 

: Schedule of Deviation 

43.1 The bidders are not allowed to deviate from the principal requirements of the Specifications. 

However, the bidder is required to submit with his bid in the relevant schedule a detailed list of all 

deviations without any ambiguity. In the absence of a deviation list in the deviation schedules, it is 

understood that such bid conforms to the bid specifications and no post-bid negotiations shall take 

place in this regard. 

43.2 The discrepancies, if any, between the specification and the catalogues and / or literatures submitted 

as part of the offer by the bidders, shall not be considered and representations in this regard shall 

not be entertained. 

43.2 If it is observed that there are deviations in the offer in guaranteed technical particulars other than 

those specified in the deviation schedules then such deviations shall be treated as deviations. 

43.4 All the schedules shall be prepared by vendor and are to be enclosed with the bid. 

44. Label design, manner of display of Star rating in the Distribution Transformer 

44.1 Material of the lable shall be non detachable weather proof type. The Design of the Label, manner 

of display of label and its colour scheme will be in accordance with the notification of Bureau of 

Energy Efficiency, New Delhi’s, appended as Annexure- ‘K’. 

Electrical Superintending Engineer (purchase) 

JSEB, Ranchi 

80



FAX NO. 0651 – 2400799 

Annexure – ‘C’ 

Tender Proforma for Part – I (Technical & Commercial) 


Sl.no. Parameters Bidders particulars Page no.- 

1. Name & Full address of the tenderer : of tender documents 

With Tele.no…………… fax no…….. 




5. Whether the F.O.R. destination price has : 

been quoted giving freight element 

6. Whether quoted price is FIRM : : 

7. Delivery period : 

8. Validity of the offer : 

(it should not be less than 90 days) 

9. Acceptance of the terms of payment : 

10. Acceptance of terms of security deposit : 

11. Details of deviation from the tender : 

Specification, if any 

12. Acceptance of the technical specification of : 

the materials for which offer is 

13. Guaranteed performance particulars : 

(copies of performance & Purchase order 

certificates should be attached) 

14. Guarantee : 

15. Acceptance of penalty clause : 

16. Particulars of payment made for Purchase of : 

BOQ and specification (Money receipt No. 

& date should be quoted) 

17. Amount of earnest money paid with money : 

receipt No. & Date 

81

18. Whether the firm is registered SSI unit of : 

Jharkhand or registered with NSIC/ DGS & D 

(give details of Registration etc. along with 

photo State copy of certificate.) 

19. Name of place where the materials will be : 

manufactured and will be available for 

inspection by the Board’s representative 

21. Whether Sales Tax 

clearance certificate submitted : Yes / No 

21. Sales Tax Registration No. : 

22. Whether proof of financial capability : Yes / No 

Submitted 

23. Details of past performance 

i) Whether list of past POs executed : Yes / No 

submitted 

ii) Whether copies of past Pos : Yes / No 

submitted 

iii) Whether copies of : Yes / No 

performance certificate enclosed 

24. Re-inspection charges supplied : Yes/No 

25. List of enclosures : 

26. Whether type-test report submitted : Type –test report no. 

27. Annual turn over as on 31.03.2010 : 

28. Whether, enrollment certificate of Bureau 

of Energy Efficiency for manufacturing of 

03 (three) star 100 kVA distribution 

transformer valid on due date of tender is 

submitted. : 

29. Whether bidder is accepting clause No. 27 

(quality control) of General Terms and 


30 Whether bidder is accepting clause No. 33 

(Extension order) of General Terms and 


31. Remarks : 



Note: Must be filled in Board’s proforma only, 

Otherwise offer may be liable for rejection. 

Seal:……………………………….. 

82

. 



FAX NO. 0651 – 2400799 

Annexure – ‘D’ 

TENDER PERFORMA FOR PART – II (PRICE BID) 


1. Name & Full address of the tenderer : 



4. Tender notice no. with due date : 


6. Whether quoted price is FIRM : YES 

7. Unit Landed price Breakup : 

a–i) Ex-factory price of transformer 

Ex-works price shall be quoted after 

considering benefit under MODVAT 

or any other scheme to be retained by 

the supplier 

a-ii) Ex-works price of Lightning Arresters 

a-iii) Ex-works price of CSP 

(completely self protected) : 

b) Excise duty 

c) VAT / CST 

d) Freight 

(including loading, unloading at stores,: 

packing forwarding etc.) 

e) Other charges, if any : 

f) Entry tax, if applicable : 

g) Insurance – will be arrangement by the Board 

8. Discount, if any 

(Conditional discount will not be accepted) 

9. Total landed price 

10. Remarks: Must be filled in Board’s proforma only, 

Failing which offer may be liable for rejection. 



83

Seal:……………………………….. 



FAX NO. 0651 – 2400151 



GUARANTEED AND OTHER PARTICULARS FOR DISTRIBUTION 

TRANSFORMERS 

Sl. No. Description To be filled by 

Bidder 

1. Make 

2. Name of Manufacturer 

3. Place of Manufacture 

4. Voltage Ratio 

5. Rating 

A. Rated output (KVA) 

B. Rated Voltage (HV) 

C. Rated Voltage (LV) 

D. Number of Phases 

E. Rated Frequency (Hz) 

F. Vector Group Symbol 

6. Core Material used and Grade: 

a. Whether core of the offered transformer is stack type CRGO core, as 

required by NIT. 

b. Flux density 

c. Over fluxing without saturation 

(Curve to be furnished by the Manufacturer in support of his claim) 

7. Maximum temperature rise of (without +ve tolerance) 

a) windings by resistance method 

b) Oil by thermometer 

8. Magnetising (no-load) current at: 

a) 90% Voltage 

b) 1 00% Voltage 

c) 110% Voltage 

9. Core loss in watts : 

a) Normal voltage 

b) Maximum voltage 

84

10. Resistance of windings at 20 °C (with 5% tolerance) : 

a. HV Winding (ohms) 

b. LV Winding (ohms) 

11. Full load losses (watts) at 75 °C (without +ve tolerance) 

12. Total Losses at 1 00% load at 75 °C (without +ve tolerance) 

13. Total Losses at 50% load at 75 °C (without +ve tolerance) 

14. Current density used for : 

a) HV Winding 

b) LV Winding 

15. Clearances : (mm) 

a) Core and LV 

b) LV and HV 

c) HV Phase to Phase 

d) End insulation clearance to earth 

e) Any point of winding to tank 

16. Efficiency at 75 °C : 

a) Unity P.P. and 

b) .0.8 P.P. 

1) 125% load 

2) 100% load 

3) 75% load 

4) 50% load 

5) 25% load 

17. Regulation at : 

a) Unity P.P. 

b) 0.8 P.P. at 75 °C 

18. % Impedance at 75 °C 

19. Flashiest: 

(i) HV 28 kV / 50 HZ for 1 minute 

(ii) LV 3 kV/50 Hz for 1 minute 

20. Over potential Test (Double Voltage and Double frequency 

for 1 minute) 

21. Impulse test 

22. Mass of : (kg) 

a) Core lamination (minimum) 

b) Windings (minimum) 

c) Tank and fittings 

d) Oil 

e) Oil quantity (minimum) (litre) 

f) Total weight (without –ve tolerance) 

23. Oil Data : 

1. Quantity for first filling (minimum) (litre) 

2. Grade of oil used 

3. Maker's name 

4. BDV at the time of filling 

24. Transformer: 

1) Overall length-x breadth x height (mm x mm x mm) 

2) Tank length x breadth x height 

3) Thickness of plates for (without–ve tolerance) 

a) Side plate (min) 

b) Top and bottom plate (min) 

85

4) Conservator Dimensions 

25. Radiation: 

1) Heat dissipation by tank walls excluding top and bottom 

2) Heat dissipation by cooling tube 

3) Diameter and thickness of cooling tube 

4) Whether calculation sheet for selecting cooling area to ensure that 

the transformer is capable of giving continuous rated output without 

exceeding temperature rise is enclosed. 

` 

26. Inter layer insulation provided in design for: 

1) Top and bottom layer 

2) In between all layer 

3) Details of end insulation 

4) Whether wedges are provided at 50% turns of the HV coil 

27. Insulation materials provided 

a) For Conductors 

(1) HV 

(2) LV 

b) Core 

28. Material and Size of the wire used 

1) HV Dia (mm) (SWG) 

2) LV 

a) Strip size 

b) No. of Conductors in parallel 

c) Total area of cross section (sq mm) 

29. Whether the name plate gives all particulars as required in Tender 

30. Particulars of bushings HV/LV 

1) Maker's name 

2) Type IS-3347/IS-2099/IS7421 

3) Rating as per IS 

4) Dry power frequency voltage withstand test 

5) Wet power frequency voltage withstand test 

31. Number of years for which the design offered has been in commercial 

use. 

32. Whether, painting performance requirement is guaranteed for a minimum 

period of 2.5 years from date of receipt of materials in store. 

33. Whether transformers have completely self protected and protective 

features, in accordance with Cl. # 27 and 28 of the GTP 

34 Whether transformer will have design of label, manner of display of label 

& it’s colour scheme as per cl # 44.1 of technical specification of NIT. 

35 Whether transformers will have load management signal light as per cl # 

29 & 29.1 of technical specification of NIT. 

Note:- Bidder has to fill the above GTP in the Board’s proforma only, failing which offer will be 

rejected 

Date 

Sign & seal 

of the tenderer 

86



FAX NO. 0651 – 2400799 

Annexure – ‘F ’ 


SCHEDULE OF DEVIATIONS FROM SPECIFICATIONS 

Sl. 

No. 

SPECIFICATION / CLAUSE 

DEVIATION FROM 

SPECIFICATION 

(commercial & technical) 

JUSTIFICATION 

FOR DEVIATION 

Place: 

Signature of tenderer 

Date: 

Stamp 

NOTE:- Incase of not mentioning deviations in this deviation sheet & mentioning it elsewhere in the 

offer except in the tender proforma for part-1 (techno commercial), will be treated as no Deviations. 

87



FAX NO. 0651 – 2400799 

NIT No. /JSEB/PR/11-12 

DETAILS OF TESTING FACILITIES 

Due Date of opening of part-I 

Annexure – ‘G ’ 

Name of Test 

Details of testing 

Remarks 

1. 

i. 

ii. 

iii. 

iv. 

2. 

i. 

ii. 

iii. 

iv. 

3. 

i. 

ii. 

iii. 

iv. 

4. 

Test on Raw Material 

Routine Tests 

Acceptance Tests 

Type-tests 

facilities available 

______________________________ 

______________________________ 

______________________________ 

______________________________ 

______________________________ 

______________________________ 

i. 

ii. 

iii. 

iv. 

______________________________ 

______________________________ 

NOTE:- Incase testing facilities are not available for certain tests, indicate in the remarks columns from 

which testing House (S) / Institution (S) these tests will be got carried out. 

Signature & Seal of Tenderer 

88



FAX NO. 0651 – 2400799 

Annexure – ‘H ’ 

PROFORMA FOR SCHEDULE OF REQUIREMENT & SPECIFIED DELIVERIES FOR supply of type-tested, 11/.433 kV, 03 star, 

100 kVA, Al wd, stack type CRGO core, distribution transformer fitted with lightning arresters (LA) and 

Completely self protected (CSP) 


DELVERY SCHEDLUE 

Sl. 

No. 

Item 

Nos. 

Required 

The material are to be delivered on or before 07.07.2011 at Central 

Stores, Deoghar and Dumka.. 

28 

(twenty 

eight) 

NOTE : - 1. Priorities of despatches will be as notified by the Purchaser at the time of pre-despatch inspection. 

Signature of tenderer : 

Name : 

Address : 

89


Annexure- ‘I’ 

It is Certified that M/s .................................................................................................... is 

not Black listed from Central Govt./ State Govt. / Central or State Govt. Undertaking / Public 

Sector Undertaking etc for the tendered item. 

Date: 



H:\Deoghar short BoQ 11-12\63 kVA\BoQ.doc90


Annexure- ‘J’ 

It is hereby declared that payment of Sales tax of M/s 

........................................................is update & nothing is due with Sales tax Department. 

Date: 




Annex-'K' 

Proforma for pre-delivery inspection of distribution transformers 

1 Name of the firm 

2 Details of offer made 

i) Order No and date 

ii) Rating 

iii) Quantity 

iv) Sl No. of transformers 

3 Date of stage inspection of the lot 

4 Reference of stage inspection clearance 

5 Quantity offered and inspected against the order prior 

to this lot 

A) Acceptance tests to be carried out 


1 a) Ratio test 

Observations 

AB/an 

BC/bn 

b) Polarity test 

CA/Cn 

2 No load loss measurement 

W1 

W2 

W3 

Multiplying factor 

CT 

Watt meter 

Total 

Total x MF 

Net loss 


3 Load loss measurement 

W1 

W2 

W3 

Total 

Multiplying factor:- 


CT 

Watt meter 

PT 

Total x MF 

Loss at ambient temperature (watt) 

Loss at 75°C (with calculation sheet) (watt) 

4 Winding resistance: 

HV (in ohms) 

Observations 

a) At ambient temperature of ……….°C A-B 

B-C 

C-A 

b) Resistance at 75°C A-B 

B-C 

C-A 

LV (in ohms) 

a) At ambient temperature of ……….°C a-b 

b-c 

c-a 

b) Per phase Resistance at 75°C a-n 

b-n 

c-n 

5 Insulation resistance (M ohm) 

HV-LV 

6 Separate source voltage withstand test voltage 

HV 

LV 

7 Induced over-voltage withstand test at double voltage 

and double frequency 

HV-E 

LV-E 



100 Hz, 866 volts for 

60 seconds 


8 No load current at 

90% volts 

110% volts 

9 Unbalance current 

10 Vector group test Diagram and 

readings be shown in 

separate sheets 


Observations 

11 Percentage impedance at 75°C (please furnish 

calculation sheet) 

12 Transformer oil test (break down voltage) 

13 Oil leakage test 

14 Heat run test To be carried out 

once against the 

order 

15 Bushing clearance (mm) 

HV LV 

a) Phase to phase 

b) Phase to earth 

16 Comments on compliance by the firm on the 

modifications done as per stage inspection clearance 

letter issued 

17 Whether fittings of the order have been varified 

18 Whether aluminium dia cast silicagel breather with tin 

container is fitted on the transformers offered 

19 Whether engraving of sl no. and name of firm on core 

clamping channel, side wall and top cover of tank has 

been varified 

20 Whether MS plate of size 125x125 mm walded on 

with side of stiffner. 

21 Whether engraving of name of firm, si no. and rating 

of transformer, order no and date and date despatch 

on MS plate. 

22 Copy of calibration certificates of metering 

equipments be enclosed 

B Points to be seen/dimensions to be noted at the 

time of dismantling of transformers 


1 Details of the transformer dismantled for physical 

verfication 

Observations 


a) Rating (kVA) 

b) Sl No. 

2 Whether GI Nut Bolts with one spring one plain 

washer provided for tightening the tank cover 

3 Details of gasket used between top cover and tank material 

i)Thickness (mm) 

ii) Type of joints 

4 Whether core is earthed properly with copper strip (one end 

should be tightended in between the core laminations and other 

end bolted on core clamping channel). 

5 Connections from winding to bushings (describe the manner in 

which it has been done) 

a) HV 

b) LV 

c) Formation of star connection on LV side 

6 Winding wire dia and cross sectional area 

a) HV 


i) Dia (mm) 


b) LV 

i) LxWxNos. of layer 


7 Thickness of press board (s) provided between HV coils to cover 

the tie rods 

8 Whether painted with oil and corrosion resistant paint/varnish 

a) Inside of the tank 

b) Inside of the conservator tank 

c)Core clamping and core base channels 

d) Tie rods 

e) Core bolls 

9 Whether tie rods and core bolts insulated, if yes, material of 

insulation 

10 Whether flap on inner side of top cover provided to prevent direct 

falling of oil on core-coil assembly 

11 Method of joints 

a) Between HV coils 

b) Between tap coils 

c) For tap changer 

12 Whether engraving of sl no. and name of firm done on bottom 

channel of core coil assembly 

13 Diameter of copper wire, used of formation of delta (shuold not 

be less than 1.5 times the dia of conductor). (mm) 

14 Whether empire sleeves provided upto the end portion of HV 

winding joining to bushing 

15 HV coils:- 



16 LV coils: 



Observations 


17 Core dia 

18 Core height including base channel and insulation in between 

(mm) 

19 Leg center of core 

20 Clearances between 

a) Core and LV (mm) 

b) HV and LV (mm) 

c) Phase to phase of HV coils (mm) 

d) Core coil assembly and tank body (mm) 

i) Length-wise 

ii) Width-wise 

e) Top of yoke and top cover (mm) 

f) Top most live part of tap changer and top cover 

21 Weight of core only (kg) 

22 Weight of winding only (kg) 

a) LV 

b) HV 

23 Whether core laminations are in one piece, used for 

a) Bottom yoke 

b) Top yoke 

24 Specific remark Regarding smoothness and heating of core used 

25 Volume of oil filled (to be done once against the order) 

a) in conservator tank 

b) In tank of the transformer 

26 Weight of transformer (inclusive of all fittings, accessories, oil etc 

complete) 


27 Inner dimensions of the tank 

a) Length 

b) Width 

c) Height 

i) LV side 

ii) HV side 

28 Remarks, if any 

Observations 

Note:- Please ensure that complete details have been filled in the 

proforma and no column has been lelf blank 

Signature of inspecting officer 

(with name and designation) 

Date of inspection 

Signature of firms 

Representative 

(with name and 

designation) 



Annexure- ‘L’ 

It is to undertake that M/s ................................................................................................. 

will supply additional quantity, if required by Board on same rate, terms and 

conditions, if extension order is placed within 12 month from the date of acceptance/ 

placement of order. 

Date: 




Annexure- ‘M’ 

DECLARATION CERTIFICATE 

It is hereby declared that none of the persons employed in the Board or his/her close 

family member/blood relations / proxies are related to M/s ……………………… 

………………. directly or in directly. 

Date:

JHARKHAND STATE ELECTRICITY BOARD

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