Maintenance and diversion of 440 v/3.3 kv o.h. lines electrification works at various locations of kuju colliery under kuju area.

Supply, installation, testing andcommissioning of ngr 3.3 kv protection system in 33kv/3.3kv power transformers and 3.3kv dg set at 33kv s/s and ngr 440v protection system in 3.3kv/550v/440v power transformers at ncph, ra and vw ug mines of chrm ar

Complete repairing and re-winding of (a) 02-nos. 500 kva, 3.3kv/440v (b) 01-no. 250kva, 3.3kv/440v and (c) 01-no. 160 kva, 11 kv/440 distribution transformers installed at different locations of kathara colliery under kathara area.

Re organization and repair and maintenance of 440v oh line from existing 33 kv sub station to colony like 56 miners, 200 miners, old miners and shahbeer para of katkona sub area

A installation and commissioning of 3.3 kv ngr in two nos merson s make 01 mva transformer installed at kalimati and shivmandir substation bearing sl no 11221 and 28672 respectively of chapapur colliery b installation and commissioning of 02

Pole, pcc, 9 m,fixt lighting, 230 v, 150 w, led, screw,cable, 1.1 kv, 2c, copper, pvc, 1.5 mm2, flexible,overload relay, thrml, 100-150 a,ictp switch, 415-550v, 32 a, 3 p,cable joint kit, 35mm2, copper, 3.3 v, 3 c,earth leakage relay, 50-750 ma with time lag with cbct,moving contact,fixed contact,potential transformer 550-220v, 50va

Taking down of step up and down transformer 160kva after dismentling ht lt,gasket 6 mm thick superior quality on top cover plate,lt porcelain bushing with brass stud screwed with brass nuts bolts,ht 11 kv porcelain bushing with brass stud screwed with brass nuts,painting of transformer of rating 160 kva and voltage stabilizer with two coat,supply filling and top up with new transformer oil of electric strength,filtration dehydration of transformer oil of three phase servo voltage,rewinding of transformer 160 kva complete using appropriate size of copper,shifting of transformer from work shop to af stn including connecting,material and labour for arrange temporary power supply through comercial,trimming of tree branches to clear the ht lt oh lines girth span

Tree trimming including cutting of branches, creeper near 11 kv/3.3 kv/440v/220v incoming /outgoing oh power line/ lighting line at mine, colony (parej, prem nagar), partial maintenance/repairing work during tree trimming and grass cutting/uprooting

2 times trimming of tree branches within 1 m span in either side of 11kv 3.3kv and 440v oh lines of ara colliery and cleaning of bushes in 2 meters span of oh line poles and cleaning of bushes in dumarbera sub-station of ara colliery under kuju area.

Partial tree trimming and uprooting creeper near above of 11 kv oh line from parej substation to tapin north substation, 3.3 kv oh line of feeder 1, feeder 2, colony feeder and 440v,220v oh line of workshop, colonies in pre and post monsoon at tapin