supply and supervision of etc of circuit breakers for pgcil hvdc khavda-nagpur project , supply- circuit breaker : 145kv, 31.5ka for 1s, 25mm/kv creepage, 1250a, 1 phase circuit breaker for ngr by passing, alongwith support structure, interpole cables, operating mechanism, control boxes and all accessories complete in all respect , supply- circuit breaker : 145kv, foundation bolts for circuit breaker, platform and ladder (if applicable) and marshalling box (if applicable) , supply- circuit breaker : 72.5kv, 25ka for 3s, 25mm/kv creepage, 1250a 3phase circuit breaker without pir alongwith support structure, interpole cables, operating mechanism, control boxesand all accessories complete in all respect , supply- circuit breaker : 72.5kv, foundation bolts for circuit breaker, platform and ladder , supply- circuit breaker : transducers / fixtures required for travel measurement of complete 3-phase cb , supply- circuit breaker : sf6 gas filling adopter, including coupling, regulator, connecting hose pipe up to ground level , spares- circuit breaker : 72.5kv, 25ka for 3s, 25mm/kv creepage, complete pole (phase) of circuit breaker without pir, with grading capacitor (if applicable), with pole column, interrupter, operating mechanism, control box, corona rings and terminal connector but without support structure , spares- circuit breaker : 72.5kv, grading capacitors , spares- circuit breaker : 72.5kv, a set of sf6 pipe with tube mounting , spares- circuit breaker : 72.5kv, rubber gaskets, ‘o’ rings and seals , spares- circuit breaker : 72.5kv, trip coils with resistor , spares- circuit breaker : 72.5kv, closing coils with resistor , spares- circuit breaker : 72.5kv, terminal pad , spares- circuit breaker : 72.5kv, molecular filter , spares- circuit breaker : 72.5kv, corona rings , spares- circuit breaker : 72.5kv, relay power contactors, switch fuse units, limit switches each type and rating , spares- circuit breaker : 72.5kv, push button, timers & mcb of each type , spares- circuit breaker : 72.5kv, density/ pressure monitoring system for circuit breaker , spares- circuit breaker : 72.5kv, pressure switch of each type , spares- circuit breaker : 72.5kv, pressure gauges & coupling device of each type , spares- circuit breaker : 72.5kv, auxiliary switch assembly , spares- circuit breaker : 72.5kv, operation counter , spares- circuit breaker : 72.5kv, control unit , spares- circuit breaker : 72.5kv, sf6 gas (20% of the total requirement) , spares- circuit breaker : 72.5kv, hydraulic operating mechanism (if applicable) , spares- circuit breaker : 72.5kv, closing dashpot , spares- circuit breaker : 72.5kv, opening dashpot , spares- circuit breaker : 72.5kv, opening latch gear , spares- circuit breaker : 72.5kv, closing latch gear , spares- circuit breaker : 72.5kv, complete spring operating mechanism , spares- circuit breaker : 72.5kv, spring charging motor , services- circuit breaker : 145kv, supervision of erection, testing and commissioning of 1 phase circuit breaker , services- circuit breaker : 72.5kv, supervision of erection, testing and commissioning of circuit breaker , supply- circuit breaker : 72.5kv, 25ka for 3s, 31mm/kv creepage, 1250a 3phase circuit breaker without pir alongwith support structure, interpole cables, operating mechanism, control boxesand all accessories complete in all respect , supply- circuit breaker : 72.5kv, foundation bolts for circuit breaker, platform and ladder , supply- circuit breaker : transducers / fixtures required for travel measurement of complete 3-phase cb , supply- circuit breaker : sf6 gas filling adopter, including coupling, regulator, connecting hose pipe up to ground level , spares- circuit breaker : 72.5kv, 25ka for 3s, 31mm/kv creepage, complete pole (1-phase) of circuit breaker without pir, with grading capacitor (if applicable), with pole column, interrupter, operating mechanism, control box and corona rings but without support structure , spares- circuit breaker : 72.5kv, grading capacitors , spares- circuit breaker : 72.5kv, a set of sf6 pipe with tube mounting , spares- circuit breaker : 72.5kv, rubber gaskets, ‘o’ rings and seals , spares- circuit breaker : 72.5kv, trip coils with resistor , spares- circuit breaker : 72.5kv, closing coils with resistor , spares- circuit breaker : 72.5kv, terminal pad , spares- circuit breaker : 72.5kv, molecular filter , spares- circuit breaker : 72.5kv, corona rings , spares- circuit breaker : 72.5kv, relay power contactors, switch fuse units, limit switches each type and rating , spares- circuit breaker : 72.5kv, push button, timers & mcb of each type , spares- circuit breaker : 72.5kv, density/ pressure monitoring system for circuit breaker , spares- circuit breaker : 72.5kv, pressure switch of each type , spares- circuit breaker : 72.5kv, pressure gauges & coupling device of each type , spares- circuit breaker : 72.5kv, auxiliary switch assembly , spares- circuit breaker : 72.5kv, operation counter , spares- circuit breaker : 72.5kv, control unit , spares- circuit breaker : 72.5kv, sf6 gas (20% of the total requirement) , spares- circuit breaker : 72.5kv, hydraulic operating mechanism (if applicable) , spares- circuit breaker : 72.5kv, closing dashpot , spares- circuit breaker : 72.5kv, opening dashpot , spares- circuit breaker : 72.5kv, opening latch gear , spares- circuit breaker : 72.5kv, closing latch gear , spares- circuit breaker : 72.5kv, complete spring operating mechanism , spares- circuit breaker : 72.5kv, spring charging motor , services- circuit breaker : 72.5kv, supervision of erection, testing and commissioning of circuit breaker