For repairing of 03 nos. 11 kv ocbs 400 amps for controlling of 01 nos. 3 mva and 02 mva power transformer of main sub-station under bhurkunda colliery.

Erection of earth &#x0d continuity wires, stay &#x0d set, cradle guard and &#x0d other &#x0d maintenance &#x0d work of feeder no 01 11 &#x0d kv from hurriladih &#x0d hospital tapping point &#x0d 04 pole to burragrh &#x0d sub-station &#x0d under &#x0d burragrh colliery.

Repairing and overhauling of circuit breaker poles refilling of sf6 gas and repairing of operating mechanism of 02(two) nos. 33 kv sf6 circuit breakers installed at d.g. jealgora 33 kv sub-station of amal.joyrampur colliery under lodna area.

Line shifting of 3.3kv o/h line mines feeder near 02 no sub-station to quarry no 01 at kathara colliery.

Dismantling of 2 core ct, supply and installation of 3 core new ct at 11 kv vcb switch of incomer -01 of transformer no 01 (33kv/11kv 10 mva) for connection of deferential relay at south loyabad sub-station under kusunda area.

Shifting and installation of 3.3 kv power transformer with l.a and earth pit at bankola colliery no. 1 incline new surface sub station of bankola colliery.

Repairing of 11kv, 400amps vcb h.t. switch electroteknica make sl.no.5055 for controlling of primary power supply of feeder no.-2 socp sub-station at muraidih, amp colliery.

Dismantling of 2 core ct, supply and installation of 3 core new ct at 11 kv vcb switch of incomer -02 of transformer no.02 (33kv/11kv, 10mva) for connection of deferential relay at south loyabad sub-station under kusunda area.

1. estimate for replacement of 12 no pole at kalimati colony khoodia colliery., 2. replacement of 11 kv a/b switch with installation of two nos. tubular pole at sub-station of khoodia colliery, 3. supply and installation of chemical earth pit-8 nos f

New installation of 02 nos goab switch and repairing and maintenance of 08 nos goab switch 3.3kv at 2 no. sub station and mines of kathara colliery.