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'+ll«f '81(¢'1\! GOVERNMENT OF INDIA t(Yf ·Ji~n~~ MINISTRY OF RAILWAYS f~ ~RAilWAY BOARD) No. 2.007 /Eiect(TRS)/440/17 New Delhi, dated : 19.04.2010 General Manager (Elect) Central Railway, Mumbai East Central Railway, Hajipur Northern Railway, New Delhi Southern Railway, Chennai South Eastern Railway, Kolkata Western Railway, Mumbai Eastern Railway, l
,; ,;· 1fffif ~ GOVERNMENT OF INDIA tt1' ~.q MINISTRY OF RAILWAYS (t~ -~ RAILWAYBOARD) ---_;;. ::,·~·\0 No. 2007/Eiect(TRS)/441/10 New Delhi, dated 03.05.2010 General Manager (Elect.) Central Railway, Mumbai, East Centml Railway, Hajipur Northern Railway, New Delhi Southern Railway, Chennai South Eastern Railway, Kolkata Western Railway, Mumbai Eastern Railway, Kolkata East Coast Railway, Bhubaneswar North Central Railway, Allahabad South Central Railway, Secunderabad South East Central Railway, Bilaspur West Central Railway, Jabalpur SUB : Ref: Upgradation/modification of single bottle VCBs (Older version) and BVAC 25.10 M07 (Old) of Secheron M/s BT to VCBs type IBVAC 25.10. M07 (New) (i) RDSO's letter no. El/3.2.61/BT dated 08.12.09 (ii) RDSO's letter no. ELJ;I.2.61/BT dated 16.10.09 type BVAC 25.10 design supplied by A techno economic proposal received from RDSO, vide letter under reference, recommending up-gradation I modification of single bottle VCBs type BVAC 25.10 (older version) and BVAC 25.10 M07 (old) of Secheron design single bottle VCB supplied by M/s BT to BVAC 25.10.M07 (New) has been examined. R[)SO has recommended the following improvements which would not only improve the reliability of these VCBs but would also reduce the recurring maintenance cost. (i) Use of simplified Electronic Control Unit (CMDE) by elimination of power resistors. (ii) Use of electro-mechanical relay in place of MOSFET & RC combination in place of OFF dE!Iay timer. (iii) Use of two 110 v DC coils instead of 12 V and 24 V coils. (iv) Use of fish bone design auxiliary contact switch in place of cam operated BBC auxiliary contacts (v) Use of air damping instead of hydraulic damping. (vi) Elimination of shoulder stop screw. (vii) Use of indigenous lndfos make pressure switch in place of Festa make pressure switch. RDSO has recommended undertaking above up gradation I modification through OEM (M/s BT) as per the scope of work at Annex 'A' and Annex 'B' and as per the price schedule and terms 8t conditions given below. (i) Moy'10 !JJuradation of VCB of Model BVAC 25.10 MJ)7(old} to BVAC 25.10 M07(Newl to be YJ.:!dertaken in shed 11remises: (a) Price schedyle: - Sn. Description Amount (in Rs.) 1-·-- 1 Price of replacement of components as per Rs. 70,000/· AnneK. A including dismantling,, cleaning, t~ assennbly of components an~ testing of VCB. Service tax @ 10.30% Rs. 7,210/- Total Rs. 77,210/- (Rupees seventy seven thousand two hundred ten only) - - -9-· CD
Page 1 and 2: PREFAC~ II Eight volumes of compend
Page 3 and 4: • ~ ~xtfjl•{ GOVERNMENT c)F IND
Page 5 and 6: No.92/Eiect.(TRS)/l.38/5 Pt.lll New
Page 7 and 8: '(~ toj·::Ut'l) No. 97/Eiect(TIRS}
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Page 15 and 16: Page 1 of3 Annex.'S'( 0 \ ~ \JJ Sco
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Page 19 and 20: ~fRO *1\!l'< GOVERNMIENT Of INDIA ~
Page 21 and 22: 1fffi1 "ff{Q)R GOVERNMENT OF INDIA
Page 23 and 24: ' .. _ . _ _Annexure~!! ~ 7 }2.. (t
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Page 29 and 30: '---------··· ______________ ,,
Page 31 and 32: -· i lnlerrupter 25 kV Single Pole
Page 33 and 34: ), -;,, I Annexure~V (to letter no.
Page 35 and 36: ~,, 1"'\.lttiCAUSC- ti' I (to lette
Page 37 and 38: ~lRcr -~Hlx GOVERNMENT OF INDIA ·'
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