Overhauling of 145 KV SF6 CGL make circuit breaker at 132 KV Minto Park Prayagraj under Electy Trans Division-II Prayagraj

Amount

Major Overhauling of mechanism of 145 KV SF-6 CB (CGL & ABB make) spring type installed at bays of H.V. side of 132/33 KV, 63 MVA T/F-I(ABB make) & 40 MVA T/F-IV(CGL make) at 132 KV MintoPark,Prayagraj. The work includes overhauling of Control block assembly, Opening latch, Closing latch, Support latch, Anti- pumping assembly, Opening, Cleaning and greasing of Motor charging system, Replacement of worn out parts. Checking of shock absorber, Closing damper etc, Adjustment of all Gaps, Cleaning and Greasing of Levers, connecting rods, CAM, Disc CAM etc, Checking of mechanism assembly for wear and tear, rectification/repairing of worn out parts. Checking of limit switch, Power Contact, Auxiliary contactors for proper functioning. Checking and retighting of all electrical connections, Checking of Gas leakage from copper pipe assembly of Gas system & Filling SF6 gas if after the overhauling gas pressure is low, Measurement of closing Tripping time of Circuit Breaker, Measurement of contact resistance of Circuit Breaker. Finally checking ON/OFF operation of the breaker from local as well as remote to complete the job satisfactorily. Spare parts will be provided by the contractor at his own cost.

KANOIJIYA TRADERS

R.S.ASSOCIATE