Uttar Pradesh Power Transmission Corporation Limited Tender

Overhauling of each pole mechanism assemblies of CGL make 220 KV SF-6 Circuit Breakers. The job include overhauling of control valve assembly, holding latch anti-pumping pin. Opening and cleaning of pneumatic system, cylinder shock absorber etc. cleaning and greasing of all these parts opening of reservoir, checking of electrical all connections and tightening them rectification of air leakage problem through NRV. Safety valve replacement of consumable spares as roller D-valve sheet, O-ring P80, O-ring P-18, O-ring P-7 etc. and other damage rings if necessary rectification of gas leakage by replacement of O-ring and brazing of gas pipe assembly of the mechanism satisfactorily operation of breaker from local & remote of the following feeders at 400 KV S/S Unnao. (a) 315 MVA ICT-II LV Side Circuit Breaker. (b) 220 KV Circuit Breaker Unnao-Bithoor Line. (c) 220 KV Circuit Breaker Bus Coupler. (d) 220 KV Circuit Breaker Transfer Bus Coupler.

Supply & Fixing of 220 Volt DC Contactor having 4NO+4NC Contacts in the above CGL make Circuit Breakers.

Supply & Fixing of NRV in the above Circuit Breakers.