Hi
What is the better choice:
One ET340 Energy Meter
or
Three x CTR110000500 Current Sensors
for
3 Multiplus II + Cerbo GX
The setup (in the raw order seen from the grid) is:
Grid
contactor
Three grid connected multiplus II, 3 phase operation, Cerbo GX
Battery 20kwh, SimpBMS, Can connected.
Solar inverter 15kwp, Kaco, not smart in anyway.
House devices
Everything is connected to the main AC-out of the Multipluses, critical loads.
The multiplus are supposed to charge the battery with surplus solar energy only. In case of grid fail the multiplus are supposed to disconnect the house (on their own, but also due to regulations) with the contactor.
As I can deduce from the manual the current sensors are not needed, if everything is connected to AC1, critical loads.
Nevertheless know more could be interesting and open more doors. So I wonder which is more suitable:
One ET340 Energy Meter
or
Three x CTR110000500 Current Sensors
My dealer doesn't respond, automatic mail, they have to much to do, it could take days. I waited a week, so I try it here. Thank you for your time.
