Watt measurement of VM-3P75CT jumping up and down in a 1kW range

[ejfeith (Edward)]

I check the glams, see this post

VM-3P75CT Phase 3; it is not being measured correctly

I checked the clamps. They were all clicked into place, but I still had the feeling that they weren’t closed properly. To be on the safe side, I put cable ties around the clamps to make sure they were closed properly. The measurement deviation of phase 3 was still present. It seemed to be slightly smaller, but it was still not being measured correctly. [afbeelding] For now i will run the ESS only on the inverter/charge meter.

2-9-2025
For me the problem is solverd, everything has been working fine for a few days now. The ESS is keeping everything at zero to the mains. The cable tie and the firmware seem to have solved the problem. I will keep an eye on it.