Details: major overhauling and repairing of following 145 kv sf-6 gas circuit breaker at 220 kv s/s sahibabad: (a)- 145 kv sf-6 gas circuit breaker ( air compressor type ) of 132/33 kv, 63 mva t/f-ii (b)- 145 kv sf-6 gas circuit breaker ( air compressor type ) of 132 kv vaishali bay by doing following work in each circuit breaker :- i) overhauling of drive mechanism along with replacement of overhauling kit of o rings , gaskets and k slot rings.( mateial supplied by contractor) ii) overhauling of magnetic value along with replacement of overhauling kit of o rings , gaskets and k slot rings.( mateial supplied by contractor) iii) overhauling of control block value along with replacement of overhauling kit of o rings , gaskets and k slot rings.( mateial supplied by contractor) (iv)-checking & adjustment of gap, travel of drive insulator rod & tie rod of each pole. (iv)-oiling & greasing of crank gea
Sector: Transmission