MPPT limiting?

chrisberg

Is it possible that the mppt is limiting here? I have 3x 550W modules 1 west 2 south all of them are paralell, so it is possible I overcome the 25A max, but would this be the result to cutting at 200W?

christianeckert80@googlemail.com

You can not put them all parallel. Put the two modules in the south in one string and the the other one parallel. Otherwise you have more then 150V

chrisberg

Thanks, so this is the common reaction of the mppt overpowered?

theseven

That's nonsense, NEVER EVER put strings of different panel counts in parallel! All 3 in parallel is probably the best possible configuration here. However the 25A limit may indeed be a limiting factor, and there may also be safety concerns if that is exceeded by a lot.

theseven

Your chart looks like the battery was nearly full and the SBV had nowhere to put that solar energy

chrisberg

You are right, battery was near limit, it was set to 95% and limiting started at 93%

chrisberg

https://ibb.co/519Z9Yx