I have a MultiPlus-II configured as an Energy Storage System. The charge/discharge cycle is done via ModBus-TCP. Here's how the power/voltage graph looks over time:
As you can see above, all was working fine, until the utility company decided to do (unannounced) work and all grid power went down. After power was restored, I no longer had a Neutral wire.
The MultiPlus-II is connected to a "monofase" connection. Below is a measurement on my "monofase" connection with 2 wires coming in from the grid. As you see, in stead of 1F+1N, I now have 2F wires (120° out of phase of each other) coming in.
There is still 230V between both wires. However, some devices, including the MultiPlus-II ESS stopped working... Can the MultiPlus-II handle this kind of (old-school) 2 phase (no neutral) grid connection? If yes, how to (re)configure?
Side information: I also measured at a neighbouring grid connection with 3 wires coming in from the grid. It look like this:
It clearly shows 3 phases on prove #1, #2 and #3. Probe #4 is connected to a 4th wire, but that 4th wire is not connected inside the (sealed) box of the grid company.
