Replacement of under voltage relay and complete shunt trip assembly for oil circuit breaker of 3.3 / 6.6 kv at barpali substation under ta,kusmunda area

Complete repairings overhauling and safety protection of 400a 11 kv ocb switch at alkusa substation under ngk colliery

Providing and fixing of e/l relay with cbct, idmt relay, ct, ht bushing, 3.3kv vacuum contactor coil and other items in 02 nos. 11kv or3.3kv ocb and 02 nos. 3.3kv vcb er at balkudra substation and quarry at bhurkunda colliery under barka sayal.

Repairing of safety circuit of the following ocb of tilaboni colliery under bankola area. 1. c and g make 3.3 kv 400 amps ocb 03 nos sl 01 02 803. 2. 3.3kv 400 amps ocb switch 01 nos sl 01 retender.

26 nos. of pole muffing 475 nos. of danger board fixing on pole for safety purpose in 11 kv oh line 2 feeder 3.3 kv oh line in mine and colony oh line where ever is require at tapin north open cast project under hazaribagh area

(1) repairing of 400 amps &#x0d ocb switch 6.6 kv make&#x0d gec.sl.no,m-6693 &#x0d at &#x0d kantapahri &#x0d sub-station &#x0d akwmc under katras &#x0d area.(2) &#x0d repairing &#x0d of &#x0d safety protection and &#x0d overhauling of 400 amps &#x0d ocb switch 6.6 kv make

Providing and fixing of 04 nos. of idmt relay, 04 nos. earth leakage relay with cbct, 08 nos. digital meter n other items in different 11kv n 3.3kv vcb n ocb of main sub-station central saunda for protection n safety purpose at central saunda

Complete repairing and overhauling of safety protection of 1 no. h.t. main switch 11 kv 400 amps gec make ocb switch ctr-200 /100/5a sl. no.-01 local id. no. bccl/m/sw/11 kv/01 of 6 no. sub-station of amal. nt-st-jg colliery under lodna area.

Repairing of safety circuit of the following ocb of tilaboni colliery under bankola area. 1. c and g make 3.3 kv 400 amps ocb 03 nos sl 01 02 803. 2. 3.3kv 400 amps ocb switch 01 nos sl 01