Current tansformer LB5-66,LVB-35,LB6-110 used for current ,electric energy measuring, relay protection in electricity. Current ... tansformerLB5-66,LVB-35,LB6-110 used for current ,electric energy measuring, and relay protection in electricity ... and oil immersed top-head type current transformer, wihich is used for metering and relay protection of 35kv, 50 or 60HZ ...