Details: overhauling of 145 kv sf-6 circuit breaker ( m/s cgl make cb no-75) of 132 kv bus coupler bay at 132 kv sub-station vaishali as detailed here under- rectification of non operative mechanical problem of 132 kv sf6 circuit breaker (m/s cgl make) by replacement of ractchet wheel & powl with bearing and closing arm tripping arm with linkage and driving unit(gear box) catch gear closing above works involves opening ofv closing spring assembly and associated accessories. alignment and adjustment of ratchet wheel and associated accessories for opening abd closing . re fixing of closing spring coil and other parts with mechanism for proper operation of breakers and work also included setting the mechanism rod and pole assembly & complete overhauling including checking of nrv & drain valve, 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
Sector: Transmission