Complete repairing/ overhauling (a) 350 amps sd-15 ocb switch kilburn make 440 volt with original sl.no. 0696 (b) 400/300 amps gec make ocb switch 550v with local id. no. jg/sw/400-300a /66(c) repairing and replacing of defective accessories of 1 no.

Repairing and overhauling of a) gec make 550 v 440 v 600 amps ocb b) kilburn make 600 amps 550 volt ocb c) kilburn make 400 amps 550 volt acb d) abc make 400 amps 550 volt acb at nakrakonda kuamrdihi b colliery under bankola area.

Complete repairing and overhauling/safety protection of (a)400 amps 550 volts gec make ocb switch sl.no. bar/ocb/02 for power controlling lighting line of nunudih basti and bhuli type colony digwadih and (b) 400 amps 550 volts gec make ocb switch sl

Repairing of 400 amps gec make 11kv ocb (ht switch) at millinium incline shankarpur colliery under bankola area

(a) partial repairing of 01(one) no. 400 amps 440 volt a.b.c. make switch (b) repairing of 01(one) no. 200 amps 440 volt kilburn make ocb c) repairing of 01(one) no. 400 amps 440 volt g.e.c ocb switch of kujama colliery

(a)complete repairing and overhauling and safety protection of no. h.t. switch 3.3 kv 400 amps gec make ocb switch sl.no. ocb/m-163 local id no. bccl/nt/sw/3.3kv 05 (b) complete repairing and overhauling of 1 no. 400 amps 440 volt gec make ocb switc

A)complete repairing of 02 (two) switch (i) gec make 400amps 440volt ocb switch with busbar sl. no. 314711/189 and local id no.kj/13 (ii)sd-15 type kilburn make 400 amps 440volt ocb switch local id no. kj/19 .(b) repairing of 01(one) no. 200 amps

For installation of safety protection of ocb switch 6.6k, 400 amps. sl. no. hv/346, biecco lowrie 7/8 substation of tmc

(1) complete repairing of 400 amps gec make switch ocb 550 volt,sl.no.30/1489 at 12 no.national angarpathra aarc.akwmc.(2) repairing of 400 amps vcb switch 6.6kv,make-gec,sl.no.455501/1 at kantapahri sub-station akwmc.

Repairing/overhauling of 1 no. 400 amps 550 volt gec make ocb switch with busbar sl. no. 30/1889 and local id. nt-st-jg -05 type k-03 main controlling switch at amal.nt-st-jg colliery under lodna area.