REPAIR OF 500 kVA 6.6 kV 433V TRANSFORMER AT ARMY CAMP JAMSHEDPUR UNDER GE RANCHI

1. M&L for disconnecting/ decanting of oil, all electrical and external connections of the transformer of capacity 500 KVA, 6.6 KVA/ 433 V Lifting from its position using all necessary arrangements without damaging, loading in vehicles, transportation to the workshop and vice versa, dismantling transformer for rewinding/repairing/ Replacement of any necessary spares, Dehydration of core assembly by heating in oven, Inspection of transformer tank for leaks and incl rectification of leaks by welding/bracing etc, removing of sludge from tank, Making of all internal connections using all necessary strips/connectors, including replacement of entire gasket, checking the acidity of oil and insulation test before and after & subbmitted the report with installed, testing and commissioning after repairing carried out of transformer complete as per directed. - 01 Job Each Note:- (i) payment of defective parts to be replaced shall be measured and paid separately under respective item of sch and replacement of all other material such as top gasket , insulators gasket, shut off/ drain/ filter valve, Air release plug etc shall be part of this item and no extra payment shall be made for the same (ii) Before repairing for analisys damage of core and winding (6.6KV/433V) pre Inspection of transformer and inspection after repairing carried out as per policy in vogue at authorized transformer factory and no extra payment shall be made for the same. (iii) Before and after installation of tranformer all safety measures check like over currect protection/ earth fault protection functioning properly and testinng carried out as per policy in vogue and no extra payment shall be made for the same. (v) In this effect GE/ AGE E/M should certified and obtained 02 years warranty from the contractor. 2. M&L for rewinding of HT/LT winding of transformer with new copper winding wire including match with the same size of old winding and turns with new press board insulation, necessary insulation packings/ paper insulation etc and all as directed - 290 Kg. Note:- i. The coil to be replaced shall have same number of turns ,gauge, insulation value matching with manufacture's design. ii. Old HV/LV copper coil (Sch of credit items) will be handed over to the contractor after the successfully commissioning and testing.) 3. M & L for filtration of transformer oil of different capacity of transformer to remove moister ,sludge,carbon particles and to achieve the dielectric strength/ rupturing capacity of oil not less than 3 times than the operating voltage with 4 mm gap and topping up of oil to the required level of transformer indicator level all as specified and directed. - 300 Ltrs 4. Supply and fill up transformer oil as in topping up/refilling of transformer having dielectric strength not less than 60 KV at 4 mm gap conforming to ISI. (transformer oil shall be filled after necessary heating , moisture free with dielectric strength as specified above ) - 30 Ltrs Note : Schedual of Credit 160400.00

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