Hi Community !
this is my first post here , cause a am not able to find an answer to my question till now.
I have a Multiplus 2 and a Fronius AC-IN coupled PV inverter. The whole System is in ESS Mode.
There is a 3 phase meter (ET340) on the main AC input of our house.
Everything seems to work fine, except the readings on the Venus in high load conditions:
As you can see the multi is drawing 2500 Watts from the battery and feed it back to the grid via L3. The Load measured by hand with around 2300 Watts is on L1 -> which is measured fine by the ET340. The problem is on "ac-out" side. There the load is suddenly 4579 Watts on L1.
The Fronius inverter is in zero-feed-in mode. (i think he has nothing to do with that)
Any idea how i can fix this ?
Thanks a lot !