Repairing of 220 KV and 132 KV Gas Circuit Breakers at S/S under ETD-II Bareilly

Amount

Attending of Air leakage from air Pipe lines / Compressor of 220 KV SF6 CB (ABB) Make SF6 Type ELF- SL4-1 circuit Breaker in 220 KV Bareilly (400KV)-Ist feeder bay at 220 KV S/S Dohna & checking of location of leakage and replacing the damaged and defective “O” rings of air pipe line, Drive Sealing guide ring, K-Slot and damping gasket, Overhauling of NRV and Air filter of compressor along with replacement of all gaskets. Overhauling of magnetic ventile along with replacement of damage “O” ring overhauling of control valve block along with replacement of defective teflon brass gaskets, tension spring and all other rusted locks / circlips etc., closing & tripping and CO timing of CB to be checked and operation of CB from Local / Remote to complete the job.

Inspection and rectification of gas leakage of 132 KV SF-6 CB, CGL make spring type Bus Coupler feeder at 132 KV S/S Dohna. The job includes opening of Y-pole assembly from upper & lower terminal flanges. Dismantling of “Y’’ phase pole of 132 KV SF-6 circuit breaker Bus Coupler bay at 132 KV S/S Dohna for attending the gas leakage. Cleaning of all grooves of flanges and porcelains with petrol, scrubber pad and acrylic solution. Replaceent of all O-ring of the pole and gas pipe fittings by applying anabond adhesive. Reassembly of pole then evacuation of pole upto 760mm. Hg. After testing of vacuum for 12 hrs. and satisfactory result, refilling of SF-6 gas upto required level. Erection of the same pole after attending the gas leakage Checking of proper operation of CB from local and remote. All materials, T&P except SF-6 gas required for execution of work will be arranged by the contractor at his own cost.

M/S SATKAR TRADERS

TIRUPATI ELECTRICALS