... three phases four wires with three electric meters to indicate three prases separately,and a shift switch & voltage meter to shift and survey each phase ... .Model(KVA):1,5,3,4.5,6,9,15,20,30,50,60Input Voltage:Three ... :-5°C~+40°C Relative Humidity:Less Than 95%Waveform distortion: Non-lack Fidelity in WaveformInsulation Resistance:More than 5MΩ SVC-9KW Three Phase ...