... . High temperature imported resin 3. High purity oxygen free copper 30 yearshistory make us know how to make production cost low ... device, which is composed of two sets single-phase wholly insulated voltage transformers, forming three-phase V/V wiring, and two current transformers ... current (kA)0. 2S0.20. 5S5, 10, 15, 20, 25, 30, 40, 50, 75, 100, 150, 200, 3005101010751ln187. 51ln Voltage transformer ...