I'm designing a 3-phase ESS system based on 3x a Multiplus-II 5000 with the solar panels feeding in on the DC bus.
3 times 5000 VA brings the total inverter kVa >10kVA and as such is no longer considered a "residential" installation in Belgium and requires special permits and requirements.
One of these requirements is the instalation of a dedicated production meter. This meter is supplied by the grid operator and needs to measure the AC energy produced by the installation.
As the loads on AC OUT, might receive power from AC IN as well, it is not OK to connect such a production meter directly to AC OUT.
The only suitable place is directly behind the inverter and this is not an exposed connection on the Multiplus.
Does anyone know if making a tap directly behind the invertor for connecting a production meter is feasible to do?
Or are there any alternatives possible?