18-ETD(P)/2024-25

Following work at 220 KV S/S Sangipur under ETD Pratapgarh.

Overhauling of each pole mechanism assembly of Siemens makes a 245KV SF6 circuit breaker (each breaker having three pole assemblies). The job includes overhauling the control assembly, opening latch, closing latch, support latch, anti-pumping assembly opening and cleaning of the motor charging system, cylinder shock absorber, closing damper, etc., and adjustment of all types of gaps, cleaning and greasing of the lever, connecting rod, clamp, disc clamp and other parts, opening of different mechanism assembly for rectification of wear and tear along with rectification/repairing (whatever required) roller and linking of mechanism assembly, checking of motor limit switch, auxiliary contactors, power contactor and all electrical connections and tightening then, replacing them if required, replacement of O ring breezing of gas pipe assembly of mechanism, ensuring satisfactory operation of breaker from local as well as remote, testing and closing tripping time along with contact resistance measurement of 245KV Bus coupler bay SF6 CB at 220KV Sangipur. all skilled service engineers, material, and T&P required for satisfactory completion of the job is to be arranged by the contactor his own cost.