... protectionInput voltage:380V±10%Surrounding Temperature: -10ºC ~50ºC Relative humidity: 20%~85% Load electric current: ... phase 380V power with the terminal A,B,C respectively. Connect the terminal K,K to ... working light indicates that the three-phase wire A,B,C connect with a wrong phase ,change the ... positions of any two phase wires of the three. When the wire ...