I’m in the planning phase of a new installation and have a question about local regulations (Belgium) regarding allowed EnFluRi-sensors for the ESS system.
The system I’m planning would be a 3-phase ESS system with 3 x Multiplus-II 3000VA (3-phase setup) and a cerbo GX as the control unit.
It would be parallel connected to the grid (AC-in), so an external current or energy measurement is needed for the ESS functionality.
According to the following article (a Victron distributor):
And according to the homologation list C10/26 (http://www.synergrid.be/download.cfm?fileId=C10_26_list_of_PGU_compliant_with_C10_11_ed2_1_12_2019.xlsx)
It would seem an external energy meter, like an EM24, would not be allowed as the enfluri sensor, and only the “Current Transformer for Multiplus II” can be used.
I have the following questions, that I can’t get verified in the manuals I’ve found:
- Is it as simple as connecting the current transformer on each phase to the MP on that phase? Does this work correct in a 3 phase setup?
- If the settings on the GX are set to “no external energy meter”, does it look at the current measurements on the MP on each phase?
- Does the phase compensation behavior work in the same way as if an external energy meter would be installed?
And the final question (but only answerable by those knowledgable about Synergrid guidelines and certificates, or Victron staff):
- Is the article above correct in stating an EM24 cannot be used as EnFluRi sensor in a 3 phase victron Multiplus setup, connected to the Belgium grid?
(I find it odd as in the C10/26 list, the EM24 is allowed for another inverter but it could have something to do with certificates applying for a certain configuration, and not for the separate parts).