Work of Repair and Overhauling of 132 KV CGL make SF6 Breaker installed at 132 KV S/S Tajpur, Under ETD Bijnor.

Amount

Work of Repair & Overhauling of 132 KV CGL make SF6 Breaker installed at 132 KV S/S Tajpur, Under ETD Bijnor.

Opening/Dismantling of control Valve assembly, cleaning of Cap seal cylinder, removal of defective roller, re-fixing of new roller, reassembly of control valve assembly in mechanism, Checking of control valve seal & bent O-ring, opening of anti-pumping pin assembly, de-rusting & lubrication of anti-pumping pin assembly. Checking of spring in anti pumping. Opening and cleaning of closing spring, shock absorber, pneumatic cylinder, cleaning of piston & cylinder including measurement of trip coil assembly after cleaning of piston & cylinder including their assembly, replacing of oil & o-ring, Opening and reassembling of trip coil assembly after cleaning of its various parts including measurement of resistance, adjustment of trip coil gap, checking of SF6 gas pressure and top-up (if required). Checking of NRV & Drain valve for air leakage with help of soap seeds. Replacement of NRV and Drain Value. Checking of air switch i.e. governor switches, low air pressure alarm switch including adjustment. Checking of gas density switch including all adjustment. De-rusting lubrication of horizontal rod assembly & its various linkages, cleaning of bar pins, replacement of cerclip. Show operation of circuit breaker with help of manual jack for checking over stroke, wipe, poles traveling etc for satisfactory operation.(All the material including SF6 gas will be provided by contractor.)

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TIRUPATI ELECTRICALS