... used for current ,electric energy measuring, relay protection in electricity. Current tansformerLB5-66,LVB-35,LB6-110 used for current ,electric ... phase and oil immersed top-head type current transformer, wihich is used for metering and relay protection of 35kv, ... Method: non-effectively earthed Rated Voltage66kvHighest Voltage for Equipment72.5kvRated Frequency50 or 60HZRated Transformation Ratio2*25 ...