NIT No. 36, Item No. 01 (2025-26)

Disconnection of HT main HT supply form main HT panel after proper switching of 11KV VCB discharging the supply. Complete drain out of transformer oil from transformer to empty oil drum by oil machine, dismantling of conservative tank all protection relays cable and boxes vent pipes and other items as required.

Cleaning of transformer oil tank and removing of sludge settled in the bottom with the help of vacuum pressure cleaning machine thoroughly, cleaning of core and winding of transformer with hot oil and proper safety precautions to prevent the winding damage as required cutting of old overheated insulation of winding Andre insulation of weak point with the help of HT insulation material and proper taping etc.

Replacement of top cover gasket vertical vent gasket & missing hardware to stop the oil leakage.

Replacement of tape changer.

Replacement of Silica Gel.

Complete assembling of transformer cleaning of complete transformer tightening of all connections of incoming and outgoing side and testing and checking of IR test with megger of winding and cable of both sides with HI port machine.

Filling of transformer oil to up to top up level as required to make power

P/fixing of winding protection pad.

Checking & matching of control wiring of all protection relays and calibration of bucchlaz relay and protection relays and testing the same

Repairing of LT Copper bolt, remettaling and finishing the same as per original shap and size

Repair of cooling fins, replacement of cooling fins gasket and oil seal for stopping the leakage.

Dehydration and filtration of complete transformer oil and checking the die ectric strength up to 50 KV at side as required.

Complete cleaning and chemically washing of oily and muddy transformer body and painting of transformer with enamel paint.

Insulating the LT Cable and tightening of thimble as per site requirement.