Incorrect / Inaccurate Current and/or Power Readings on ET112 Grid Meter

[benau (Ben)]

Hi, I have an ET112 on my grid-connected setup connected to my cerboGX, however, the current values are being presented in the VRM Portal and on the cerboGX seem to be a lot higher than the power figure being represented.

Does this mean losses are in play here because the current is true and the power is a “calculated value” or is it potentially somethign else.

My setup consists of a cerboGX, MultiPlus-II, ET112, Fronius AC-Out tied Inverter and a MPPT SCC with a 48V battery conected via BMS-CAN.

I was thinking of adding a smart shunt to the battery to assist in better SOC measurements, but I’d be open to any advice here.

Cheers.

[MikeD (Mike)]

The difference in VA and power at the grid meter display will be due to a poor power factor, and the low current.
The difference in the VRM display can be due to a time lag (up to 15 min) or averaging of the values.
You will get more accurate tracking of battery voltage and Soc from a smart shunt than with the Multiplus.