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perrybeebe asked

MPPT 75/15 max pv power

I have two 200w solar panels connected (in parallel) to my MPPT 75/15.


The specs say that nominal input PV is 220w.


What happens if the solar panels produce more than 220w?

pv limit
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2 Answers
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kevgermany answered ·

The MPPT regulates the power produced by the panels.

It's normal to put panels with a higher max power than the MPPT can output. This compensates for low input due to clouds, rain etc.

As long as the max input voltage of 75V isn't exceeded and you haven't exceeded Isc, you will be ok.

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perrybeebe avatar image perrybeebe commented ·

What does “you haven't exceeded Isc” mean?

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perrybeebe avatar image
perrybeebe answered ·

What does “you haven't exceeded Isc” mean?

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kevgermany avatar image kevgermany ♦♦ commented ·
Isc... The max short circuit current. There's a rating for the MPPT in the manual. The panels also have a rating. If panels are in parallel, the sum of the panels individual values is the panel rating. In series, the value of one panel.
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