Solar array voltage drop issue

[foggysail]

CC a control center? Back to solar, solar panels are current sources, not voltage sources.

[Selica]

Its been cloudy with sunny breaks but when I disconnect and reconnect panels about 20amps est. I'm hoping its sunny here tomorrow and I'll get a better idea, its just seems rather strange as voltage is very low

[jflorey2]

Hi everyone, Ive been trying to figure out a problem with my solar array. Panels are 4 x 325w CS6U-325P wired two sets in series then paralleled. I'm only getting 46v reading at my cc from night into the day(11am). I will then disconnect both sets it will read 88v roughly with multimeter, reconnected and voltage will then be 70v+ at cc.

That sounds about right. What current are you seeing into the battery when that happens?

[Selica]

Hi everyone, Ive been trying to figure out a problem with my solar array. Panels are 4 x 325w CS6U-325P wired two sets in series then paralleled. I'm only getting 46v reading at my cc from night into the day(11am). I will then disconnect both sets it will read 88v roughly with multimeter, reconnected and voltage will then be 70v+ at cc. Tracer 4215bn

This issue has started that Ive notice this spring was fine previous. Ive got two separate arrays 1300w and 1360w on separate cc

thanks for any suggestions or advice
Joseph