Supply and installation of winding temperature meter, oil temperature meter and buchholz relay alam bell system in 02 nos of 1 mva,11kv/3.3kv,power transformers,installed at dumerbera sub-station 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

Overhauling and oil filteration of power transformer of 2.5mva 11kv 3.3kv sl. no rpm 126 make m and b switch gear pvt. ltd. of 4a patch of bhowra south colliery.

Repairing of oil temperature and winding temperature indicator and mercury switch buchholz relay of 2.5mva and 1mva power transformer along with wiring of control circuit from transformer to control panel at ilbl ocp, lakhanpur area, mcl

Supply and installation of oil and winding temperature indicator with the trip/ alarm circuit of primary control switch with repairing of buchholz relay of 04 nos of transformer of khottadih colliery

(a)rewinding and repairing of p.t. 11kv/110v and 6.6kv/110v 3phase and 3.3kv/110v 1phase 05nos.(b)repairing &#x0d of 3.3kv/440v gec make switch sl.no.-m/406 (c)repairing of 1200a lt ocb switch gec make,type k-5, &#x0d 440v,sl.no.50/0254 of muraidih, ampc.

Providing and fitting safety devices buchholz relay oil and winding temperature indicator for identifying the cause of tripping, and gasket changing of 1250kva transformer 3.3kv/415 volts, make crompton parkinson, serial no. 1546v 1mva tra

Cork sheet changing, oil filtration etc. and replacement of av alarm along with oti wii of 1000kva 6.6kv550v transformer sl.no.c6520/82 sbc(ii)repairing 02 nos transformer(a)1mva 11kv/6.6kv(b) 1mva,11kv/3.3kv with fitting box in 6.6kv/3.3kv incoming

Repairing of (a) 11kv, 600a, gec make ocb switch &#x0d sl.no.-2817 and (b) 6.6kv,400a gec make ocb &#x0d switch sl. no.-m-164 for controlling of 11kv/6.6kv &#x0d transformer at sadbhavna substation under &#x0d muraidih, amp colliery.

Providing, fixing and commissioning of buchholz relay temperature meter and its separate annunciation for alarm and trip in 4 no. 630 kva, 3.3kv/440-volt power transformer installed at different place in r.o. kargali ocp.