CT and PT. Routine, scheduled, preventive and Breakdown maintenance of 33KV and 11KV Current transformers and potential transformers as per OEM manual. • Checking for oil leaks & oil levels. • Visual inspection of bushings for any damage and earthing. • Check earth connections. • Measure IR Values as per schedule and maintain record. • Checking of primary jumper, clamp connectors & primary connections of CT/PT. • Checking and tightening of jumpers & connectors. • Checking earth connections of secondary circuits. • Checking and tightening of secondary circuits. • Cleaning of bushings and oil level indicators. • Maintenance of CT JB/PT JB. • Measurement of voltages at marshalling box & control room in case of CT/PT. Isolators :- • Cleaning of Contact S& Aux. Contact, Greasing in the control mechanism. • Routine, scheduled, preventive and Breakdown maintenance of 33KV and 11KV Isolators as per OEM Manual. • Checking of Earth switch copper flexible. • Check earth connections of earth blade. • Cleaning of insulators & checking for cracks in the insulators. • Cleaning of main contacts, arching horns, earth blade. • Changing of male/Female or moving/fixed arm, changing of connectors/hardware and attending all the incidental troubles to ensure smooth operation of the Isolators (Spares by BHU). • Checking to ensure all the lamp are glowing (Spares by BHU). • Necessary ckt checking &Motor checking & setting to put the remote operation in service.
CT and PT. Xxxxxxx, scheduled, preventive and Breakdown maintenance of 11KV Current transformers and potential transformers as per OEM manual. • Measure IR Values as per schedule and maintain record. • Checking earth connections of secondary circuits. • Checking and tightening of secondary circuits. • Cleaning of bushings and oil level indicators. • Maintenance of CT JB/PT JB. • Measurement of voltages at marshalling box & control room in case of CT/PT. Isolators :- • Cleaning of Contact S& Aux. Contact, Greasing in the control mechanism. • Routine, scheduled, preventive and Breakdown maintenance of 33KV and 11KV Isolators as per OEM Manual. • Checking of Earth switch copper flexible. • Check earth connections of earth blade. • Cleaning of insulators & checking for cracks in the insulators. • Cleaning of main contacts, arching horns, earth blade. • Changing of male/Female or moving/fixed arm, changing of connectors/hardware and attending all the incidental troubles to ensure smooth operation of the Isolators (Spares by IWD, IIT (BHU). • Checking to ensure all the lamp are glowing (Spares by IIT (BHU). • Necessary circuit checking & Motor checking & setting to put the remote operation in service.
