... reverse polarity, AC short-circuit protection, ground fault monitoring, grid monitoring, integrate all-pole sensitive, leakage current monitoring unit.> ... . output current21AAC voltage range200Vac-250VacAC grid frequency range40.1HZ-50.9HzPhase shift (cosφ)1THDI <3%AC connectionSingle phaseEfficiency Max. efficiency ... and approvalsCE/TUV EN50178,VDE 0126-1-1,EN6100-3-2 DC SWITCH Grid-tie inverter