Hi guys,
I connected a D300S to a 5 modules string with in total about 2000W. However, I get a maximum of about 680W out of this, even full sun on the modules.
Currently, there is only one string connected to the D300S for testing.
It seems that solar production starts really late in the morning and the voltage given to the AC500 is going up and down e.g., 40V, suddenly near to 0, then going up to 20, 30,40 and again goes down. Later on the day it goes up to about 120V input shown on the two input strings of the AC500, but wattage seems to stuck at about that 600W.
The modules have about 38V, so the start voltage of the MPPT should not be the problem when 5 pcs. connected as a string, right?
Any ideas what the problem could be here?
I’d appreciate your help
Best regards
Chris