Kezo Fortunately, the Sunsynk 8.8kwh hybrid inverter has “Island mode” built-in with no set-up required is this what the automatic change over switch would do?
An automatic changeover/transfer switch as they have been known as for years ever since the dawn of backup generators sense a voltage drop in the event of a grid powercut, transfering power to a backup source, untill grid power is restored and utomatically switches back to grid power.
Islanding or island mode is much the same thing disconnecting from the grid in the event of a powercut to a backup source and switch back to the grid automatically. However some hybrid inverters will allow you to manually switch to backup mode (inverter mode to be precise) and manually switch back to grid power, irrespective of a powecut or not (manual changeover/transfer switch)
Anti-islanding is also important factor for solar grid tied systems, preventing the solar array backfeeding into the grid in the event of a powercut. In battery storage systems, solar can be directed to the battery storage in the event of a powercut. Sunsync hybrid inverters have anti-islanding protection built in, along with other necessary protections.
Cheers @Oscarmax 🙂