So after setting up a 3-phase Multiplus-II-5000 system (not my first one), I get a “phase rotation” error.
I did check that the phases are configured correctly, that each phase goes where it’s supposed to go, etc.etc. Experimentally, I also swapped two phases on AC-In. No change, I always get the error.
The system looks healthy otherwise, AC-In voltages (as reported by the GUI) are correct, the grid meter says cos-phi is >.8 on all three phases … but I seem unable to get it to not show that warning after restarting the Multis, let alone actually connect to the grid.
Just a thought, from unpleasant experience. It might be that provider line is not actually 3 phase, 2 of those being connected, by mistake, from transformer or distribution point.
I had such a case and it was difficult to demonstrate without a phase analyser / phase monitoring relay, got a 3 phase motor tied up and not running.
Hi Matthias. Do you happen to have a Victron grid meter (VM-3P75CT) installed? I have one and can see the phase rotation/sequence there. Here we have an odd L1-L3-L2 order (error of grid engineer) and thus during the configuration/setup of VE.bus you need to take that into account. Luckily you can let the LED flash to ID the target inverter..