18-ETD-IV(P)/2025-26

(i) Inspection & rectification of SF-6 gas leakage from R Phase CB pole of 132KV spring charging SF-6 Circuit breaker (M/s CGL make) of 132KV Sirathu bay installed at 132KV S/S Manjhanpur, Kaushambi under ETD-IV, Prayagraj. This work includes opening of R phase pole assembly from upper & lower terminal flanges and drive mechanism, cleaning of all groves of flanges and porcelain with petrol, scrubber pad & acrylic solution along with replacement of all damaged gasket/ O rings/ sealing rings/Guide rings/K-slot rings and damping gasket. This work also includes replacement of K slot ring of drive mechanism of 132KV spring charging SF-6 CB of said 132KV Bay by new K slot ring installed at 132KV S/S Manjhanpur, Kaushambi. (K-slot ring, gasket having IS-45513 specification having all type test approved suitable for 145KV M/s CGL make CB will be provided by contractor by their own cost & risk from original proprietor). (ii) Replacement of defective short piston magnetic valve with new one. (Magnetic piston suitable for 145KV M/s ABB make CB will be provided by contractor by their own cost & risk from original proprietor). (iii) Inspection & rectification of short circuit of wiring in DC circuit of T/F breaker to protect blowing of fuses by detecting the fault/damaged insulation of control wiring of switch cubical, control block and all the wiring up to the control room & replacement/ repairing of damaged wiring.