... , voltage constant/current constant (could be manually switched)AC inputvoltage rangeAC 220C, 380V, 400V, 415V, 440V(± ... air coolingMechanical structuresingle cabinet, modular power unit,1.5-2mm steel cabinet, powder coated.Protectionsinput overvoltage, ... one year is very lowProtectionsComplete, Phase loss, input under voltage, overvoltage, output under-voltage, overcurrent, overheat, short circuitSafe ...