Is there some grid voltage requirement when I do the ac connection of X1-Hybrid-LV?

The series inverter is a single-phase inverter suitable for rated voltages of 220/230/240V and frequencies of 50/60Hz. For more technical requirements, please consult the regulations of the local public grid. Also A circuit breaker should be installed between the inverter and the mains, and the load should not be directly connected to the inverter.