tender for complete repairing and overhauling of (a) one no. (01) ht switch 11 kv 400 s electroteknica make vcb switch sl.no. sgi-2306 and local id.no.jl/sw/31 for controlling of feeder-1 main switch at 7 pit new sub-station jealgora colliery and (b) one no. (01) star delta starter( local id.no. jl/str/550v/09) 250 hp 550 volt bharat culture hammes make surface pump motor controlling sl.no. 80048 of 2 pit sub-station at jealgora colliery and (c) one no. (01) 200 s 440 volt kilburn make ocb switch sl.no. jl/sw/19 for controlling of 2 pit surface pump motor at jealgora colliery of amal.joyr ur colliery under lodna area.