tender for supply and retrofitting of 6.6kv ‘cgl make sf6 circuit breaker installed in ht switchgear unit # 6 by vacuum circuit breaker at kstps, kota. , part-a , supply of 7.2 kv vacuum circuit breaker (1250 amp.) alongwith cradle (if required), surge arrester for retrofitting of ht swgr unit # 6 , transport trolley for 1250 amp. , retrofitting charges 7.2 kv vacuum circuit breaker (1250 amp.) , mandatory spare parts:- , spare breaker for motor feeder (1250 amp.) , tripping coil , closing coil , spring charging motor , limit switch for spring charging motor , aux switch , handles/rods- spring charging, closing/tripping rods , surge arresters , part-b , supply of 7.2 kv vacuum circuit breaker (2500 amp.) alongwith cradle (if required) for retrofitting of ht swgr unit # 6 , transport trolley for 2500 amp. , retrofitting charges 7.2 kv vacuum circuit breaker (2500 amp.) , spare breaker for incomer feeder (2500 amp.)