Repairing of 3.3kv, 100-amps, m.v. make ocb s.no. sdp/pnm/67 and 3.3kv, 400-amps, biecco lawrie make ocb secondary main controlling switch of 1-mva power transformer of sheetalpur colliery under sodepur area

Complete repairing of 400 amps reyrolle burn make 3.3 kv ocb switch of khandra colliery under bankola area.

Repairing/reconditioning of 01 nos 11kv,400amp ,rey roll burn make ocb s.no. 82/153 and 3.3kv ,400amp southern switch gear ocb s.no. 0766/959 of kuju colliery under kuju area.

1.repairing of 11kv, 400amps, electrotechnica make vcb panel s.no. espl/2350 of dhemomain pit colliery under sodepur area. 2.repairing of 11kv, 40

1) upgradation of 400 amps, 3.3kv grade becolarly make, oil circuit breaker (ocb). &#x0d 2) upgradation of 400 amps, 3.3kv grade ece make switch of barmondia colliery under salanpur area.

Repairing and rewinding of 2-mva, 11kv/3.3kv, eef ranchi make power transformer s.no. 4010858 of sodepur r colliery under sodepur area.

1. complete repairing of 200-amps, 550v, abc make acb switch at 10l/13d main for sdl m/c no.-1137 of mithani colliery under sodepur area. 2.repairing of 400-amps, 550v, oil circuit breaker (switch) r/b make of mit

Complete repairing/rewinindg of 1-mva, 11kv/3.3kv power transformer s.no. 8578 make marsons c of bejdih colliery under sodepur area.

Repairing of 300a, 550v reyrolle burn make acb (iga-13) and 200a, 550v, audrew yule make acb (air circuit breaker) switches of n.j. unit of bahula colliery

Complete repairing and overhauling/safety protection of (a) 400amps/550volt gec make ocb switch local id. bar/ocb/ 28(b) 400amps 550volt gec make ocb switch local id. bar/ocb/ 03 at bararee colliery of amal. joyrampur colliery under lodna area.