In a nominal 220V mains installation, if voltage fluctuates to 170V or even 250V for a prolonged period, the inverter will keep switching to battery power, causing switching confusion and even protection shutdowns.
[pdf] Inverters can be classed according to their power output. The following information is not set in stone, but it gives you an idea of the classifications and general power ranges associated with them. Th.
[pdf] The voltage output of a standard solar photovoltaic panel typically falls in the range of 18 to 36 volts. Monocrystalline panels commonly produce around 36 volts, while polycrystalline options usually output between 18 and 24 volts.
[pdf]