Application The current transformer is designed for current, power measurement and relay protection in AC power system with rated frequency 50Hz, rated voltage 0.5kV and below. Service condition Altitude: up to 1000m above sea level Ambient temperature: -5 to +40℃； Relative humidity: 85%, at 20℃； Structures features The current transformer is bus type and cast-resin insulated. The secondary windings are wound on the core. The base plate is located at the bottom for mounting. Technical parameters Performance conforms with IEC standard and GB1208-97 "Current transformer".