Off grid installation
I have currently 8.7kw solar through a Fronius 8.2 primo ac coupled to AC1 out on a 10000va Quattro +
Us2000 Pylontech X 5 batteries. 28kw single phase generator and Color GX to monitor and control with a lynx dc
I have a further 8Kw of solar still to be fitted
Fronius limited to 6kw output max (just to be safe - I hope to increase this to 8.2kw after input from this thread)
Generator configured to come on when SOC falls to 20% to protect batteries
Plan - questions
I am considering placing to 8 kw on the dc side with a Victron charger (could you recommend one)
Using the 1 to 1 rule am I right in saying i can safely go up to 10kw of ac coupled solar (possibly by adding a second smaller ac coupled Fronius) note that the actual charger on the Quattro states 140amp as the charging max.
if I put the other 8 Ish solar on the dc side will this have any effect on what I should limit the ac solar too?
I am thinking to add a further 3 pylon tech to the system to bring me up to the 8 max they allow without a separate controller but I read somewhere on Victron that I should have 4.8kw of storage for each 1.5kw of solar - this is an awful lot of storage !? Is there a reason for this ?
I intend to program the Fronius to reduce its output to 50% when the SOC is above 90% to protect the batteries and attempt to stop them going all the way to100%
I am having great results currently running completely off grid - tumble dryer, washing machine, dishwasher electric ovens etc - AND charging an Audi etron but I am trying to organise myself for winter
Thank you for your replies