spotty drops in solar generation

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stepir asked Mar 25, '19

spotty drops in solar generation

Hi

I just upgraded my solar configuration:

used to have a single string of a series of 10 panels
Moved to two strings one with roughly 600w and the second with about the same

Since then the production graph shows this strange curve that I never experienced before - looks like every now and then there is a negative spike of about the half (although timing and amount seems not have a connection):

Anybody have any idea of what it could be? could it be that the isolator diodes used between the two strings are not properly working?

THANKS

solar sizing

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Answer 1 · 2019-03-25T09:00:32Z

markus answered · Mar 25, 2019 at 09:00 AM

Hi @stepir,

have you seen this thread?:

change-mppt-tracking-refresh-interval.html

Those sweeps are also discussed there.

Regards,

Markus

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Answer 2 · 2019-03-25T11:15:13Z

stepir answered · Mar 25, 2019 at 11:15 AM

Thanks @Markus I'll followup there

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