bids are invited for pantograph isolator for mandsaur site isolator 420kv,3150a,63ka for 1s,three phase,pantograph type isolator with one earth switch , isolator 420kv,3150a,63ka for 1s,three phase,pantograph type isolator without earth switch , services isolator 400kv,supervision of erection testing and commissioning including alignment check of three phase,pantograph type isolator with one earth switch , services isolator 400kv,supervision of erection testing and commissioning including alignment check of three phase,pantograph type isolator , spares isolator 400kv, 3150a, 63ka for 1s,mandatory spares pantograph type isolator with one earth switch , spares isolator 400kv,3150a,63ka for 1s,mandatory spares pantograph type isolator structure mounted copper contact fingers for female and male contacts for one pole , spares isolator 400kv,3150a,63ka for 1s,mandatory spares pantograph type isolator structure mounted open and close contactor assembly,timers,key interlock push button switch and auxiliary switches , spares isolator 400kv,3150a, 63ka for 1s, mandatory spares pantograph type isolator structure mounted limit switch , spares isolator 400kv,3150a, 63ka for 1s, mandatory spares pantograph type isolator structure mounted terminal pad , spares isolator 400kv,3150a, 63ka for 1s,mandatory spares pantograph type isolator structure mounted corona shield rings total quantity : 24