... reverse polarity, AC short-circuit protection, ground fault monitoring, grid monitoring, integrate all-pole sensitive, leakage current monitoring unit ... EN61000-6-1, EN61000-6-2, EN61000-6-3, EN61000-6-4,EN61000-3-2, EN50178, VDE0126-1-1,IEC ... 50Hz/60Hz 50Hz/60HzGrid Frequency Range 40.1~50.9Hz Grid Current THD < 3% (at nominal power)AC ... 7kg12.2kg 21kg21kg Growatt 1500W 2000W 3000W 5000W Solar Inverter