ETC MU T 12 2024 25

Amount

Opening of 220 KV breaker jumpers on both side R, Y,B phase pole , cutting and opening of MS flat from breaker pad.

Opening of electrical connection from breaker marshaling box and operating mechanism box of R Y B poles and removal of the connection and take out the cable from cubical and dismantle the marshaling box.

Dismantling of 245 KV SF6 circuit breaker by removing the R, Y, B pole from base with the help of crane including opening nut and bolts(crane should be arrange by the contractor) .

Erection of 245 KV new circuit breaker upon foundation, filling of SF6 gas including fixing of structure and erection of R,Y,B poles of breaker & its marshaling box with the help of crane(crane should be arrange by the contractor) .

Laying of different types of cable between R, Y, B poles mechanism box to marshaling box to control relay panel situated in control room. Cutting scrapping of the cable for proper glanding and ferrules and to be connected on TBs as per drawing.

Jumpering of 245 KV CB R, Y, B poles including cutting of conductor and fixing of jumpers with clamp on both side cutting of MS flat and welded with structure including cutting, bending work.

Health checkup of 220 KV New Circuit Breaker (A) Checking ON & OFF operations of the breakers. (B)- Determine operating times of the following operations- (1) Trip & close coil current characteristic. (2) Closing timing (3) Opening timing (4) Close open timing

RAHUL ELECTRIC ENGGINEERING WORKS