Repairing and maintenance of 11kv and 3.3kv bus bar of 2 mva , dumerbera sub-station along with repairing of damaged wall and fixing of existing main gate of 2mva dumerbera sub-station of ara project under kuju area

Repairing and complete rewinding of the national electrical indus ltd. make ,1mva,11kv/3.3kv, s.no. ry/775 , power transformer installed at dumerbera substation of ara colliery under kuju area.

Work for con of existing 3.3kv bus-bar of ara-kanta substation into 11kv bus-bar, dismantling of complete 3.3kv oh line from ara -kanta substation to dumerbera substation and installation of transformers at ara kanta substaion

Maintenance of 3.3kv oh line from dumerbera sub-station to 16b quarry and installation of 400a rated goab and do fuse at 16b quarry for safe operation 250kva 3.3kv/440v transformer installated at 16b quarry of ara colliery under kuju

Repairing and complete rewinding of 630kva ,3.3kv/440v, s.no.ara/tr/01, lighting transformer installed at ara kanta substation of ara colliery under kuju area.

Repairing/reconditioning of 3.3kv, 400a, reyroll burn make ocb. sl.no. 82/104, installed at dumerbera sub-station for controlling 3.3kv power supply 10 16b quarry of ara colllery. repairing/reconditioning of 11 kv, 400 amp, ocb of ara colliery.

Supply and installation of 4 nos of timer switch sets to be installed at different location of ara colliery to control the lights installed at po office, dumerbera sub-station, ara kanta substation and 16b quarry of ara colliery under kuju area.

Up gradation and re-wiring of all offices and barandah of ara project office building, fresh wiring of kali mandir near po office building and fresh wiring of dumerbera substation sba rooms of ara colliery under kuju area.

Providing and fixing a safety device like buchholz relay, oil, and winding temperature meter and connecting with tripping device to both 3mva, 11kv/3.3kv power transformer i.) make- g.e.c., amp. 157.6/525.5, 3 phase, 50hz., sl. no. ct4368/b-24065 and