bids are invited for isolator spares for itarsi project isolator 400kv,3150a,40ka for 1s, horizontal double break hdb type isolator - copper contact fingers for female and male contacts for one pole. , isolator 400kv, stopper pipe , isolator 400kv, spring assembly , isolator 400kv, earth switch fixed contact arcing rod , isolator 400kv, female contact corona brackets , isolator 220kv, 1600a, 40ka for 1s, horizontal double break hdb type isolator copper contact fingers for female and male contacts for one pole , isolator 220kv, copper flexible , isolator 220kv, female contact corona brackets , isolator 220kv, 1600a, 40ka for 1s, double break tanden type isolator copper contact fingers for female and male contacts for one pole total quantity : 17