Hi
I have a strange issue. 3 phase ess with 3x Multiplus, batteries, cerboGX and a Victron EM340 Grid meter.
When inverters are shut off, the grid meter is showing correct readings. Eg. 850 watt usage on ac loads. When i set the system online, it will fluctuate between 0 watt usage and 5500 watt, and sometimes it will draw 10.000 watt from the battery and export it all to grid for a very short moment, and then it goes to 0, 1300 watt, 4000 watt and after some time it exports 10000 watt again. (solar is all the time around 3000 watt production). It also sometimes pumps current into the battery (a lot) just for a very short while.
It does not make sense. The grid meter is installed at the edge, before the power cable goes outside the house.
When i shut off the inverters, the grid meter is not acting weird.
Is it installed in the wrong position?
My multiplus'es are wired in AC-IN. Im using ess and export excess solar
