I am quite new to Victron but have been using SMA Sunny Island. I have heard great things about Victron. I have the below scenario.
The panels will be connected to a 3-phase grid-tied solar -PV inverter to the main-distribution board at the house. To this distribution board we will connect BYD LV batteries using a 3 Phase battery inverter. This inverter will operate in self-consumption mode when grid is available.
When the grid goes off the line, the system will back up all 3 phases till the batteries reach their maximum allowed discharge level.
The system will then start a suitable generator automatically (to be provided by you) and will charge the batteries to a pre-set charge level before turning it off. This cycle will continue till the next day, when the Solar panels starts producing power or until the grid comes back on.
Do i use the Multi-plus 2 or the Quattro to achieve the above solution ?