Details: a) repairing of biecco-lawariee make, 3.3kv, 400 amps o.c.b. sl.no. hv 2893 installed at crusher sub-station of bonjemihary colliery :- providing of over current relay/idmt relay. providing of digital earth leakage relay. providing of epoxy moulded current transformer. providing of complete tripping assembly. providing of c.b.t. providing of volt met. providing of amp meter. providing of selector switch cost of spares for repairing of fixed & moving contacts with proper brazing including replacement of spares. cost of auxiliary 110v wiring with supply of 2.5 sq.mm single core copper wire, connector, fuse with carrier, copper lugs, ferrule etc. labour charges for dismantling, refitting, assembling testing of switch-gear. b) repairing of electro-technica make, 3.3kv, 400 amps v.c.b. sl.no. espl 2328 installed at mine sub-station of bonjemihary colliery :- providing of over current relay/idmt relay. providing of tripping assembly. providing of digital earth leakage relay with cbct. mater
Sector: Mining