technical specification for 11& 33 kv post insulators, 11 ... - WBSEDCL

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WEST BENGAL STATE ELECTRICITY DIST. COM. LTD.Office of the Chief Engineer , Procurement & Contracts DepartmentVidyut Bhavan( 4th Floor),Bidhannagar, Block-DJ : Sector-IIKolkata-700 091 : Phone No.033-2359-8397 : Fax No.033-2359-1921ix)Earthquake acceleration (g) : As per IS: 1983 (1984) for Class III & IV Zone.x) No. of months of tropical monsoon condition per annum : 5 months (June -Oct.),9.0 TEST AT MANUFACTURER`S WORKS AND TEST CERTIFICATES : -Following acceptance tests shall be carried out at the works of the manufacturer and five (5)copies of test results shall be submitted to the Chief Engineer (P&Cfor approval. Anadvance notice of thirty (30) days shall be given before the date when the test will be carriedout:i) Verification of dimensions.ii)iii)iv)Temperature cycle test.Mechanical strength test.P.F. Puncture test.v) Porosity testvi)vii)viii)Galvanizing testTwenty four hour mechanical strength test. (for Disc. Insulator String only).Electromechanical failing load test. (for Disc. Insulator String only).10.0 TENDER DRAWING / LEAFLETS AND TYPE TEST CERTIFICATES FOR PIN, POST & DISCINSULATORS :-The following Drawings, Leaflets and Type Test Certificates shall have to be submittedalongwith each Tender.i) Dimensional General Arrangement Drawing showing all fittings and accessories,sectional Drawing etc. of individual Pin, Post & Disc insulators.ii) Leaflets of individual Pin, Post & Disc Insulators.11.0 TYPE TESTS & TEST REPORTS :The Bidder should submit the complete Test Reports as stipulated in latestrelevant IS/IEC with complete Identification, Date & Sl.No., carried out within5 (Five) years from Due Date of Tender in any NABL accredited/Govt. recognizedTest House or Laboratory on the Tendered Items (Pin, Post & Disc Insulators) ofidentical design and as per Tender Specification.In case any Bidder submits the reports of successful Type Tests, on theTendered Items, with its Bid, but the Test Results do not cover the WBSEDCL’sdesired Technical particulars, the Bid may be considered in case of submission ofan undertaking that the desired Type Tests will be submitted before the Openingof the Price – Bid, failing which their offer may not be technically accepted.The Certificates of the NABL accredited Test House or Laboratory should,however, bear the Logo of NABL accreditation.12.0 TYPE TESTS AFTER ISSUANCE OF ORDER :Besides submission of Type Test Report, carried out within five years as perInsulator – Spec – Amended in March’2012
WEST BENGAL STATE ELECTRICITY DIST. COM. LTD.Office of the Chief Engineer , Procurement & Contracts DepartmentVidyut Bhavan( 4th Floor),Bidhannagar, Block-DJ : Sector-IIKolkata-700 091 : Phone No.033-2359-8397 : Fax No.033-2359-1921Tender Specification, Type Test at the discretion of Ordering authority, shall have to bearranged by the successful contractor from any lot delivered to site, as per the relevantISS from any NABL accredited/Government recognized Test House or Laboratory inpresence of WBSEDCL‟S representative.However the necessary cost of the Type Test charges only be reimbursedto the party on production of necessary supporting documents.13.0 DOCUMENTS TO BE SUBMITTED AT THE TIME OF PHYSICAL DELIVERY AT CONSIGNEESTORESThe following documents to be submitted by the vendors to the consignee Stores at thetime of despatch to stores by the vendors:-a) Copy of Purchase Order.b) Copy of Despatch Instruction.c) Inspection Test Certificate.d) Guarantee Certificate.e) Proforma Invoice.f) Calculation Sheet for price Variation on the basis of IEEMA or CACMAI as applicablewith base date of order.g) Seal list and packing list.h) Challan, in triplicate.i) Way bill, if applicable.14.0 SPECIFIC TECHNICAL PARAMETERS14.1 PIN INSULATORS :Sl.No. Description Rating33KV11KV1. Nominal system Voltage 33 KV 11 KV2 Highest system Voltage : 36 KV 12 KV:3. Dia. of Largest shell : 280mm 165 mm4. Minimum failing load : 10 KN 5 KN5. P.F Vissible Discharge Voltage : 27 KVrms 09 KVrms6. P.F Minimum flash over voltagea) Dry : 130KVrms 75KVrmsb) Wet : 90KVrms 45KVrms7. Impulse flashover voltage1.2/50 micro second wave :a)Positive : 210KVp 95KVpb)Negative : 230KVp 100KVp8. P.F. Withstand Voltage :a)Dry : 95KVrms 60KVrmsb)Wet : 75KVrms 35KVrms9. Impulse withstand voltage 1.2/50micro second wave :a) Positive : 170KVp 75KVpb) Negative : 180 KVp 80 KVp10. Power Frequency puncture withstandvoltage: 180KVrms105KVrmsInsulator – Spec – Amended in March’2012
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technical specification for 11& 33 kv post insulators, 11 ... - WBSEDCL

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