Hi.. I live off grid. However I have mains available from a large 300kva generator that runs constantly feeding the private estate.
My solar system is quite large for a residential property, I will list here for info.
6kw (max theroteical) panel array although some face east and some face west.
24v 5kw multiplus (4 years old) will not run ess
3 x 150/70 mppts
12 x 2v battery 600ah
Private Grid is availble
2 back up gensets 1 on auto start and one manual start
Both need to be connected via a manual transfer switch (10kva/6kva)
So.. To minimise battery usage and extend their life I have it set up in the virtual switch to only ignore grid if battery soc drops below 90% or load exceeds 2.5kw
So when those conditions are met the inverter switches to grid, but this then cuts the solar, so it pulls everything from grid. (not the real grid, communal generator)
What I want to happen is this..
3kw of solar available
Load is 4kw
Grid will have cut in.. But I want it to only assist the solar.. So 3kw from solar and 1kw from grid..
Currently it would pull all the 4kw load from grid. Not an ideal situation because the idea is to reduce my grid consumption. And with a wife that has not adapted to solar it is very frustrating, her iron alone is 2.7kw.
I have tried to figure it out.. But obviously missing something as I am sure the inverter should be able to be configured to do this.
Thanks in advance for your advice.