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Excel MPPT sizing vs Online MPPT - Need help - Can this work?

Hi All.


Need help determining if this can work or not. Excel says no, Online says yes. May well be operator error, not sure.

I have a EasySolar 3000 (Specs - https://www.victronenergy.com/inverter-charger-mppt/easysolar) for off grid work.
I'm have the panels from my house (which I have since upgraded) 10 x Sharp NUSOE3E panels 30v x 180A - approx 8-10yo.(Specs - https://www.energymatters.com.au/images/sharp/Sharp-NUS0E3E.pdf)

The EasySolar has a 150/70 MC4 inside, so was going to do 2 strings of 5 panels.

Challenge is excel says no, can only do 2 x 4 panels, online says yes I can.

I don't really want to overload and kill the thing, and it's remote so don't really want to start a bushfire either.....

Can anyone shine some light? I'd like to use all 10 panels for the best capacity if possible, but wondering if the panel specs versus MPPT specs may mean that's not possible.

Thanks.

MPPT Controllersbattery chargingEasySolar All-in-OneSolar Panelmppt charging
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1 Answer
klim8skeptic avatar image
klim8skeptic answered ·

Temperature compensation at low temps.

5 x 30.0 (Voc @ 25c) = 150v.

5 x 32.6 (Voc @ 0c) = 163v.

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