ATTENDING THE GAS LEAKAGE AND TIMING WORK OF 245 KV SF6 CIRCUIT BREAKERS AT DIFFERENT LOCATIONS AT 400 KV SUB-STATION MROADABAD UNDER ELECTRICITY 400 KV SUB-STATION DIVISION MORADABAD

Amount

Repairing/Servicing for attending of gas leakage from springs charge pole meachanism system and overhauling of 245 kv sf6 CGL make circuite breaker of 500 MVA ICT-II at 400 kv S/s Division majhola Moradabad. The work consist of overhaulling of driving mechanism along with replacement of work overhauling kit of ‘O’ ring gasket.Inspection and reactification of gas leakage of 245 kv circuite breaker the work includes opening of Y phase assemble from upper and lower part terminal flangs, Cleaning of all grooves of flanges and porecelains with petrol, scrubber pad and acrylic and porcelains of all O-ring of the pole and gas pipe After testing of vacuum for 12 hrs. and satisfactory result, refilling of SF-6gas upto required level.checking of proper operation of Circuit breaker from local and remote. All materials, T&P required for execution of work will be arranged by the contractor at his own cost. Checking & tighting of all connections in the marshaling box. Satisfactorily close/ trip operation of the breaker both by local and remote.

(i) Reactification of 245 KV GE T&D make circuit breaker’s (CB No. 883) timing problems by checking its operating meachanism assembly, adjustment of charging motor & rod, adjustment on closing and tripping shaft, adjustment on trip latch, cam and limit switch etc, checking, de-rusting and retightening Micro switch, checking manually and electrically, tightening of all electrical connections and ON/OFF operations of breaker from local and remote switches.

P&H Engineering

Technocrat Electrical

M/s S.S. Refregeration