Repair and maintenance of 250 KVA 11 0433 KV copper wound transformer and allied accessories at BSF campus 43 170 BN BSF under SHQ BSF Shillong

Amount

Dis-mantling and cleaning of tranformer, Top cover, conservator tank, explosion vent pipe, breathing pipe, core-tank etc. and draining out the existing quantity of transformer oil as per direction of Engineer in charge.

Providing and Replacement of all type gaskets, LV and HV bushings, silica gel, damaged insulators etc. and other allied/ connected accessories as per requirement.

Supplying and refilling of duly dehydreded EHV grade transformer oil of rated dencity and vescocity upto required level in the existing transformer to topup upto required level including assembling, commissioning and testing on 11 KV/0.44 KV and on working load as capacity of transformer.

Dehydration of retrived available quantity of EHV grade transformer oil at rated dencity and vescocity and refilling in the existing transformer to top upto required level including assembling, commissioning and testing on 11 KV/0.44 KV and on working load as capacity of transformer.

Spray painting of tank, cooling tubes, conservator, Buchhoz Relay, Explosion vent, Breather, tap changer etc. complete with 2 or more coats of approved paint as required.

Earthing with G.I. earth plate 600 mm X 600 mm X 6 mm thick including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe of 2.7 metre long etc. with charcoal/ coke and salt as required.

Providing and fixing 25 mm X 5 mm G.I. strip in 40 mm dia G.I. pipe from earth electrode including connection with G.I. nut, bolt, spring, washer excavation and re-filling etc. as required.

Jointing copper / G.I. tape (with another copper/ G I tape, base of the finial or any other metallic object) by riveting / nut bolting/ sweating and soldering etc as required.

Providing and laying G.I. tape 32 mm X 6 mm from earth electrode directly in ground as required.

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