WBPHE /EE/AMD/NIT 48e / 2022-2023/3

Amount

Testing of all relay viz earth fault, over load, buchholz and checking of master trip, trip circuit supervision, CT, PT, spring charging system, closing/trip coil, breaker of HT and LT panel etc. Including calibration of Ammeter, Voltmeter, Power Factor Meter etc. by agency approved by directorate of Electricity/WBSEDCL/Any power generating unit and submission of the Test Report to Department (4 Panel 33KV VCB, LT Panel, 1200A ACB-5Nos., SFU-630A : 7 Nos., SFU-400A : 1 No., SFU-250A : 2, SFU-200A : 2 Nos., SFU-125A : 4 Nos., Transformer 1000KVA, 33/0.433KV - 3 Nos., In LT Panel - CDG-31 : 3 Nos. (2 O/C, 1E/F each), In HT Panel - MICOM P127 {(Incomer - 3 O/C, 1 E/F, 1 O/V), Each Outoging (3 O/C (I>,I>>), 1E/F(Ie>,Ie>>)}.

Collection of sample of Transformer oil from 3 Nos. 1000KVA Transformers at Kalyaneswari Sub-Station and carrying it to authroized laboratory for testing including collection of test report after completion of the Testing procedure Following Testing of Transformer oil should be done:- a ) Inter facial tension by Ring Method (IS 6104-1971) b ) Flash point by pensky materns method, IS 1448 (P21)-1992 c ) Neutralization value (acidity) by chemical test, IS 1448 (P2)-1967. d ) Di-electric strength (BDV) by electrode type method, IS 6972-1992. e ) Specific resistance (Resistivity) by three terminal cell method IS f ) Moisture (water) content by Karal Fischer titration method, IS 13567-92 g ) Di-electric dissipation (tanD) by three terminal cell method, IS 6262-1971 h ) Sludge content by chemical test method IS 1866 Annex-A. i ) Dissolve gas analysis (DAG) Gas chromatograph method, IS10593 & 9433 (Transformer oil testing should be done from authorized laboratory and submission of Test Report to department as per direction and to the entire saitsfaction of the EIC.

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EASTERN INDIA SALES AND SERVICE

Tarun Kumar Bhattacharya