NIT NO 14 , ITEM NO 14

Dismantling of HT Panel VCB including bushing, moving contact and operating mechanism etc as required,

Servicing of VCB, cleaning of inner male & female contacts with CRC Repairing of Operating mechanism for smooth operation of VCB Assembling of VCB after. Rectification of wiring etc. as required

Servicing of Vacuum contactor , cleaning of vacuum bottle, solonite coils and Auxiliary contacts with CRC Repairing of Operating mechanism for smooth operation of vacuum contactor Rectification of wiring etc. as required

Calibration and testing of 30 V DC relay for tripping system. The job includes Disconnection of relay from the panel and calibration after servicing and testing with Primary injection test. The job includes the replacement of defective wiring as reqd as Site

P/Fixing of indicating lamp unit with holder L&T make

Repairing of P.T. Replacement of HT Fuses –3 Nos. Replacement of auxiliary contacts

P/Fixing of power pack of rating 110 V /30 V DC for providing the supply to the tripping system Make Mahamai

Insulating the bus bar supporting HT insulator with epoxy paint

Wiring of panel for protection relays and metering system

Calibration of HT CT with primary injection set and testing the same as per site requirement

Assembling the complete panel & testing on load for satisfactory performance

100 KVA TransformerDisconnecting of HT supply from main HT panel after proper switching off 11 KV VCB discharging the supply. Complete drain out of transformer oil from transformer to empty oil drum by oil machine, dismantling of conservator tank all protection relays cable end 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 precaution to prevent the winding damage as required, cutting of old overheated insulation of winding and re-insulation of weak point with the help of HT insulation material and proper taping etc. Heating the HT & LT winding with inductance heating, removing the moisture improvement the IR value of HT & LT Winding

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

Replacement of silica gel.

Insulating the HT leads

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

Filling of T/oil to up to top up level as required to make power

P/Fixing of winding protection pad

Dehydration & filtration of complete transformer oil and checking the die electric strength up to 50 KV at site as required

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

TIMEX ENTERPRISES