Detailed Product Description RCT current transformer(RCT,current transformers)Specifications: 1) AC circuit 2) Rated voltage: below 0. 66kV 3) Frequency: 50Hz 4) Tests, controls, displays and records electrical equipment operation 5) Protects equipment against circuit damage ModelPrimary / secondary (A)RCT-90800/5, 1000/5, 1200/5, 1500/5, 1600/5