Repairing, Servicing and Rewinding of Transformers under Zone 1 and 3, MTNL, Mumbai.

Supply and fixing of Transformer temperature relay with dismantling of brunt out temperature relay and wiring connection testing etc complete as required.

Supply & fixing of power pack unit having input 220 Volt AC and output 24/48/110 Volt DC i/c. making inter connection suitable for existing HT system etc. complete as required.

Supply and fixing of current transformer in existing LT panel having suitable CT ratio up-to 2000/5 Amp for protection and metering, including testing, wiring, and installation in the existing LT Panel including connections, testing and commissioning etc. complete as required as per site requirement.

Servicing of 400Amp to 800Amp HT OCB / VCB complete with cleaning, alignment, adjustment of gaps between phase to phase, lubricating all moving parts, adjustment for smooth mechanical operation etc complete as required.

De-hydration of transformer oil with Filter machine at site to maintain the break down value, die electric strength of oil up to 50 KV including providing oil testing facility at site as reqd.

Supplying & filling the transformer oil, sealed pack drum including transportation charges etc. ( Make : M/S Power oil / Savita with ISI marked having 50KV R/C)

Testing and meggaring of 11 KV HT VCB, CT with p.c testing, insulation testing and rectification of moisture in bus bar, insulator, and H.T Cable box, Heating of complete C.T testing etc. complete as required.

Testing and calibration of IDMT relay set having 2 Nos. O/C. 1 No. E/F & instantaneous element by secondary injection method, cleaning the contacts, resetting with required accuracy complete with checking and set right the wiring etc. complete as reqd. i/c testing of the complete system of HT panel for checking the actual working of CTs their wiring, connected IDMT realy, shunt trip system, breaker's tripping system and for any loose connection by primary injection method in all three phases and at each plug setting at actual time multiplier at site with suitable equipment i/c rectify the different in control wiring etc if any complete as required.

Servicing of 800 to 3200 Amp ACB Complete with cleaning, alignment, adjustment of gaps between phase to phase, lubricating all moving parts adjustment for smooth mechanical operation etc complete as required.