Measuring 3 phase voltage

Hi Maarten, thank you for your input! I do believe I have a 3 phase meter, both from a physical layout perspective in the cupboard (confirmed by the professional installer) as well as from the fact that I get separate readings for current and power for all three phases via P1. That said, I agree with you that the dongle does not have a problem as it nicely shows all readings for all 3 phases that the meter provides to the dongle via P1.

The point is, that I need the voltages (and not current and power), as voltage overload is the parameter that drives my convertor into overload protection mode. Yet the particular meter type I have, does not provide the voltages as such, triggering the whole conversation above.

I hope this clarifies, or in case I missed your point, let me know. Thanks.