... 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-Phases 280-430VOutput ... Voltage:Three-Phases 380V±3%Phase:Three-PhasesFrequency:50/60HzResponse Time: Within 1 ...