Setup: Multiplus 2, 15 kWh Pylontech battery, AC coupled PV inverter 4kW.
Grid 230V - Typical grid voltage at our location is >> 253V and > 263V between 8h00 and 17h00. The multiplus disconnect during that period and increase frequency which in turn stop the AC coupled PV inverter production. Grid company unable to help in short term.
Why does the multiplus 2 increase frequency when grid voltage is above the grid code limit?