tender for supply of 3 nos 110 kv current transformer with ratio 1200/600/300/1a for usage at bph-4/ uratchikottai of this circle , 110 kv ct , supply of 110 kv outdoor current transformer with tc (5 core) with the following technical specification: single phase,outdoor type,oil filled,self cooled hemetically sealed,live tank pedestal/structure mouning type ct suitable for earthed system. ratio : primary :1200/600/300/150/1a (5 core ct), burden : 20 va, class : 0.2s for metering,other cores as per iec 185, highest system voltage : 145 kv, normal system voltage : 110 kv, basic insulation level : 230kv/550kv, no.of phases : single, short time current rating 40 ka for 3 sec make :