(a)complete repairing of 3.3kv, 400amps vcb switch andrew yule make type nflp, sl.no.3837 and (b)repairing of bucholz relay wti and oti protective device 11kv/3.3kv transformer for controlling of f.n.-2 upper side s/s of mocp f/b of amp colliery.

Day to day maintenance work of 33/11kv power transformers, 33kv vcb and mocb,11kv indoor ocb, switchyard isolators and other substations equipment at 33/11 kv central sub-station, balanda under gm unit, jagannath area as and when required for 365 day

Installation and commissioning of 300 kvar, 11kv grade capacitor bank at 33kv sub station of nlocp under cv area-xii, bccl

Supply and laying of armoured copper control cable for dc and ac power supply including tripping circuit for 3 nos. 33kv c. r. panel and 6nos 11kv o.c.b. at 33kv nlocp sub-station under cv area-xii. bccl

Make base to install 11kv outdoor type vcb control of 3mva, 11 kv or3.3 kv p transformer,3.3kv outdoor type vcb as control of 3.3kv power of f- 1,cable lying, connection work ,s/f g. bush,clamp in control switch gear at 4 mva 11kv/3.3 main substation

A) ovh. and rep. of a/crt. for 6nos. f/i switch 3nos. rly panel of 33kv mocb/vcb at nlocp at 33kv nlocp s/s under cv area-xii. bccl. (b) rep. of 11kv, 400amps c/g make o/crt breaker a at 33kv nlocp s/s. cv area-xii, bccl.

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.

(a)providing and fitting of jvs make idmt efoc relay in 11kv, 400a vcb switch type nflp, electroteknica make of area office s/s (b) providing and fitting of 800a mccb, (c)complete repairing of 400a incoming and outgoing busbar ms box at barora s/s.

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.

S i t c of 1plus2 630amps 11kv vacuum circuit breaker vcb ht panel with provision of standby ht service cable for existing 1x500 plus 1x400 kva indoor type transformer substation&#x0d at main telephone exchange campus ranchi.