Over hauling of SF-6 Circuit Breaker installed at 220 KV Jaunpur S/S

Laying and Jointing PVC Pipe. Heading

Servicing & Overhauling of each pole mechanism assemblies of CGL make 245 KV SF6 CB (each breaker having three pole assemblies). The job includes overhauling of control assembly, opening latch, closing latch, support latch, anti-pumping assembly, opening & cleaning of motor charging system, cylinder shock absorber, closing damper etc. and adjustment of all type of gaps, cleaning & greasing of levers, connecting rod, cam, disc cam and other parts, opening of different mechanism assembly for rectification on of wear & tear along with rectification/repairing (whatever required) of rollers & linking of mechanism assembly, checking of motor limit switch, Auxiliary contactors, Power contactors and all electrical connections and tightening them replacing them if required, replacement of 'O' Rings and brazing of gas pipe assembly of the mechanism, ensuring satisfactory operation of breaker from local and remote, testing of closing, tripping time along with contact resistance measurement of 220 KV Azamgarh CB (CGL make, Type- 200-SFM-40S, Sl. No. 33250C) & 220 KV Bus Coupler Bay (CGL make, Type-200-SFM-40S, Sl. No. 37994C) at 220 KV S/S Jaunpur under ETD, Jaunpur. All skilled service engineers, materials and T&P required for satisfactory completion of job is to be provided by contractor.