The Victron Energy Meter Manual for the EM24 RS485 states:-
Single phase dual function
If you are considering using a 3-phase meter in a single-phase installation to measure the grid on one input of the meter and the PV inverter output on another input of the energy meter, use the ET340 instead"
Is that because the EM24 counts total power, with net differential readings from each phase cancelling each other out, whereas the ET340 counts energy on each individual phase and then sums those values?
Also, the EM24 FAQ says "Attempting to use other brand battery inverters and trying to substitute their lack of data connectivity to the GX device by using Energy Meters will not work as expected"
My system was installed with an EM24 doing exactly that. Has that now been deprecated and it is no longer possible to set an Energy Meter as a dual "Grid + PV invertor" function anymore?