Maintenance and repairing at site of buchloz relay alarm bell system of 02 nos of 1mva,11kv/3.3kv power transformer at main substation and mine substation of karma project under kuju area.

Providing and fixing of e/l relay with cbct, idmt relay, ct, ht bushing, 3.3kv vacuum contactor coil and other items in 02 nos. 11kv or3.3kv ocb and 02 nos. 3.3kv vcb er at balkudra substation and quarry at bhurkunda colliery under barka sayal.

Providing and fixing of pt, pt fuse, ht bushing with stud, earth leakage relay, cbct , indicator lamp, push button , support insulator, aux contactor , ammeter , volt meter, rectifier capacitor unit , overload relay , core balance current transformer

1) up-gradation and adoption of earth leakage relay with cbct system in 10 nos 3.3kv, 1200amp an 400 amp vcb meditron and mineline make respectively &#x0d (2) rewinding and repairing of 136kw 3.3kv 1470 rpm ht inductio

A) providing and fixing of 02 nos pt and pt fuse of different 11 kv vcb/ocb of main substation sayald ocp

For repairing of 11 nos of switches gears of various rating like vcb, ocb,11kv,6.6kv,3.3kv amp.800,400 installed at substation under nichitpur colliery

Online oil filtration and repairing/ maintenance of 04 nos. power transformer at 11kv main sub-station under bhurkunda colliery under barka sayal area.

Providing and fixing of 04 nos. of idmt relay, 04 nos. earth leakage relay with cbct, 08 nos. digital meter n other items in different 11kv n 3.3kv vcb n ocb of main sub-station central saunda for protection n safety purpose at central saunda

Upgradation and adoption of earth leakage relay with cbct system in 3 nos vcbs in 3.3kv, 400amp mineline make and 1 no 11 kv, 400amp meditron make at main substation of kuju colliery under kuju area.

Providing and fixing of 06 nos. bushing with link contact 3.3kv grade, 400amp, 06 nos. mushroom contact, 03 nos. mechanism and other items 3.3kv ocb of main sub-station switches installed at bhurkunda colliery under barka sayal area.