... (G83/1);200-270 (AS4777); 184-276(ENEL Guide line)Grid Frequency50Hz/60HzPower factor≥0.99(at nominal power)Output Current ... protection , DC isolation monitoring , DC monitoring,Grounding fault monitoring , Grid monitoring , Island protection , Short circuit protection , Over temperature protectionDisplay ... 2:3,EN61000-11:12Maintenance5 years,(10 years Optional) Grid-tied Solar Inverter(4KW,5KW,6KW)