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hdp avatar image
hdp asked

Can I connect 10 x Canadian Solar 410Wp to a 250/70 Mppt? The Voc per panel is 47,6V thus 238v per 5 coupled in series

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Peter Buijs - NL avatar image
Peter Buijs - NL answered ·

https://www.victronenergy.nl/upload/software/VE-MPPT-Calc-3_7.xlsm

https://mppt.victronenergy.com/


Did you try one or both of these excellent Victron provided tools?


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hdp avatar image hdp commented ·

The second calculator approves, still not sure in practice

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Peter Buijs - NL avatar image
Peter Buijs - NL answered ·


But only in an 48V system, and take a look at the calculations especially the max. output current (orange)

http://www.solardesigntool.com/components/module-panel-solar/Canadian-Solar/5604/CS3W-410P/specification-data-sheet.html



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hdp avatar image hdp commented ·

Thanks Peter

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klim8skeptic avatar image
klim8skeptic answered ·

My maths works a 5 series string out at 255.25v @ 0c.

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hdp avatar image hdp commented ·

Thanks, how did you get to your answer?

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klim8skeptic avatar image klim8skeptic ♦ hdp commented ·

-25 x -0.138 = 3.45v ((temp below 25c) x (panel temp coefficent))

(3.45 + 47.6) x 5 = 255.25v

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