GE ELECT/TOKEN-27/2026-2027

M&L for disconnection HT/LT connection by mean of electrically/mechanically of indoor/ outdoor transformer upto 250 KVA copper wounded capacity for substation permises transport to workshop lifting the core assembly by y opening of top cover of transformer, check out the faults, lowering and refixing/repair the fault in rewinding using cooper super enamled of suitable gauge as required, clean the transforer tank, remove the sludge inside the tank ,replacement of HT/LT faulty/damaged bushing with rubber gasket sealing material, refixing the same in its original position carryout necessary inspection/testing of oil and winding, make it ready, transportation the same to sub station reconnect to electrical load in proper manner keep it in observation for 72 hours as per direction of engr-in-charge. Notes: (i) Rate of T&P / manpower and transportation shall be included in quoted rates. (ii) Contractor must arrange the spare transformer immediately and transport the faulty transformer to workshop within 04 hours of complaint received through verbal/ written/ telephonic from JE/ Engr-in-Charge failure may applicable for panel recovery of Rs 2500 per day form contractors dues. (II) The following routine test as per IS 2026 (Part I) -1977 shall be carried out at repairing workshop/manufacturer having NABL Lab accredition and valid calibration of test equipments. (a) Measurement of winding resistance. (b) Measurement of voltage ratio and check of voltage vector relationship. (c) Measurement of impedance voltage/short circuit impedance (principal tapping) and load loss . (d) Measurement of no load loss and current. (e) Measurement of insulation resistance. (f) Dielectric tests (iv) The contractor shall give written warranty of one year from the date of sucessfull testing and installation of transformer. The contractor shall submit test report from repair workshop/manufacturer for above mentioned test. (v) HT/LT leg coils copper wire/strip and transformer oil required shall be measured and paid separately under relevant items of this Schedule here-in-after as supply only.

All as per sr item No 01 above but transformer capacity 315 KVA to 630 KVA copper wounded complete all as specified and as directed by Engr-in-Charge.

Supply only HT coils with super enamelled copper wire /DPC of high quality duly matching with the existing guage and impedance complete all as specified and as directed by Engr-in-Charge.

Supply only LT coils with super enamelled copper wire strip/DPC of high quality duly matching with the existing guage and impedance complete all as specified and as directed by Engr-in-Charge.

M&L for ON load Centrifuging and dehydration including filteration and cleaning of transformer oil by dehydration machine of 11/0.433 KV transformer installed at various site on plinth/4/6 pole structure of any capacity and topping up deficient transformer oil including testing of samples before and after dehydration and filteration complete all as specified and as directed by Engr-in-Charge. Notes :- (i) Rate of T&P and man power shall be included in quoted rates . (ii) Deficient quantity of Transformer oil required for top up shall be measured and paid separately under item No. 6 here-in -after as supply only.

Supply only transformer oil of approved quality as per IS having dielectric strength of 45-60 KV in 2.5mm gap for filling in transformer or for topping up as required and directed

Supplying and fixing in replacement, Porcelain Transformer bushing on LT (440 Volt) side, including brass stems conical bush and gasket after disconnecting electrically and mechanically for indoor/outdoor transformer of capacity upto 250 KVA and re-connecting electrically and mechanically, testing complete all as specified and as directed by Engr-in-Charge. Note.The rates quoted is deemed to be included the cost of necessary labour charges for draining out & re-filling transforer oil, opening of top cover by unscrewing nut, bolts washers and provision of pad type bus bar copper of approppiate size /capacities of transformers with nut bolt & washers.

All as per srl item No 07 here-in-before but capacity 315 KVA to 630 KVA complete all as specified and as directed by Engr-in-Charge.

Supplying and fixing in replacement, Porcelain Transformer bushing on HT (11 KV) side, including brass stems conical bush and gasket after disconnecting electrically and mechanically for indoor/outdoor transformer of capacity upto 250 KVA and connecting electrically and mechanically, testing complete all as specified and as directed by Engr-in-Charge. Note :- The rates quoted is deemed to be included the cost of necessary labour charges for draining out & re-filling transforer oil, opening of top cover by unscrewing nut, bolts washers and connections.

All as per srl item No 09 here-in-before but capacity 315 KVA to 630 KVA complete all as specified and as directed by Engr-in-Charge.