What are the requirements for AC connection of the X1-VAST series inverter?

The grid voltage and frequency must be within the allowable range (220 V / 230 V, 240 V, 50 / 60 Hz). An appropriate AC breaker must be used, and if required by local regulations, an external RCD (recommended 300 mA Type - A, Type - B is also permitted) should be installed. The EPS load power should not exceed the inverter's rated output power.