tender for supply, erection, testing & commissioning of 02 nos. of outdoor 145 kv sf6 gas gang operated circuit breakers and dismantling of existing two nos. of outdoor 145 kv mocb breakers from bus coupler and feeder-ii, installed at 132 kv switchyard at mahi ph-i, rrvunl, banswara and 01 no. of 145 kv gang-operated sf6 breaker for 3 mva, 132/11 kv power transformer and dismantling of existing breaker at 132 kv switchyard, mahi ph-ii, bagidora. , supply of 145 kv, 2500a, 40ka gang operated sf6 circuit breaker having spring charging mechanism with supporting structure and terminal connectors. as per g-schedule , dismantling of old breaker, carrying out necessary civil foundation and structural modification, installing new breaker, re-jumpering of connections with required modifications, testing & commissioning of the new breaker complete in all respect. as per scope of work