I am a beginner using Victron. The picture below depicts my existing SolarEdge system and what I want to do using Victron Multiplus 48/10000. My goal is:
To the maximum extent, power the house from PV
If I have spare power, charge the batteries
If I have spare power and the batteries are charged, export the excess to the grid
Very key, power the house from batteries if the grid fails
I am not sure about where I have to place the ET112 power meter and the best place to connect the K1 to signal to the SolarEdge that the grid is down. In the picture I guessed the possible placement but I am not sure which one is the best to achieve what I want.
I like reading… However, I could not find a more in depth discussion on this. So, can someone help me here?
Thanks.
Very helpful your reference, thanks!
Due to the panels positioning I had never got over 10kW power. Anyway, I am thinking on moving few panels to a DC-Coupling MPPT to avoid deadlock situations. In this case, the SolarEdge PV will never go over 10kW.
This said, after reading the AC-coupling factor document I found that using a mechanical relay, like the one we have in Cerbo GX, may not be a good solution as it would introduce delays on switching the SolarEdge to “alternative power source” so it will respond to frequency shifting. So I “guess” (notice I “guess”) the best way to signal to SolarEdge is by using the open collector K1 in Multiplus, not the Cerbo one. Can you give me your thoughts on this?
Also, should I use the ET112 to measure PV production or to measure exporting to the grid?
