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

Complete rewinding/repairing of 1mva 11kv/3.3kv power transformer,marson make s.no.24200 of kuju colliery under kuju area.

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

Repairing of 500-kva, 11kv/550v hindustan make power transformer and 250-kva, 3.3kv/550v old type power transformer of parbelia colliery under sodepur area.

Minor repairing of 1 mva, 11kv/3.3kv, sl. no.- 8563, make- marsons calcutta installed at old sub-station under jarangdih colliery

Minor repairing of 1 mva, 11kv/3.3kv, sl. no.- 8563, make- marsons calcutta installed at old sub-station under jarangdih colliery

Complete repairing and rewinding of 500kva, 3.3kv/440v marson calcutta make lightning transformer s.no.8725 of chinakuri mine-ill&#x0d colliery under sodepur area.&#x0d

Maintenance and repairing of 2 nos power transformer 1 mva 11kv/3.3kv and 3 mva 11kv/3.3kv of tnocp under hazaribag area

Complete repairing/rewinindg of 500-kva, 3.3kv/440v marson calcutta make lighting transformer of sodepur r colliery under sodepur area.

Replacement of damaged gasket and oil filtration of 1mva, 11kv 3.3kv,marsons make power transformer in c pit substation of nakrakonda kumardihi b colliery under bankola area