... switched)AC inputvoltage rangeAC 220C, 380V, 400V, 415V, 440V(±10%)frequency range50Hz, 60Hzphasesthree phase three wire+groudning ... cabinet, powder coated.Protectionsinput overvoltage, undervoltage or phase lossstop operation itselfoutput overcurrent, overvoltagestop operation itself ... yearsAverage cost for one year is very lowProtectionsComplete, Phase loss, input under voltage, overvoltage, output ...