November 22, 20232 yr Hi Everyone I've recently Installed 50Kw Deye Inverter with 36 JA 555 watts Panels and 6 pieces of 5,12 High Voltage. Intially the Production was good to Approximately 130kwh from Solar.My Panels are in two strings.First string is of 12 Panels in Series with the Voc of 49,9v per panel and an imp of 13A Second string is of series parallel connection 24 panels in 12 panels per string x 2 then Parallelled together Recently the production from the solar is really down to 0,80kwh per day ,The maximum Power send to the inverter is below 100w according to my monitoring System what could be the cause of This downfall in production thank you
November 23, 20232 yr It looks like you PV voltages have dropped massively. I would think this could be due to faulty panels in series strings or a damaged mppt.
November 23, 20232 yr Stab in the dark. Are all 3 phases connected to a reference input? I see no frequency values for the AC phases S and T.
January 22, 20242 yr I’m no expert. But I had this same thing. The installer or manufacturer had logged in and changed mine to zero export. As I have three other PV systems on site as the others picked up my main inverter wound down until nearly off. however those volts don’t look right….
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