Good day. I've been asked to look at a design. The company has 3 x 10kva quattros 3phase and 2 x solaredge on the input side. With 2 x 80KW Freedom Won batteries. They do not have an output connected at all. Only input. According to the engineer whe can feed dc back to the grid although nothing is connected on output. How will this be possible?
If the inverters are going to be running in 3 phase then the Neutrals on the output must be connected.
The victron inverters are bi-directional so the inverters can convert from AC to DC or DC to AC.
They can also synchronized to the grid. Once synchronized they can import or export power from the grid via the AC input connections. Once the input contactors close the inverter input and output is electrically connected and can basically be treated as the same thing.
So yes you can feed battery or solar power back to the grid with only AC input connections.
