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wolfandy avatar image
wolfandy asked

Would this panel setup risk damaging the 150/35 MPPT?

Hi all

would this panel setup pose a long-term risk on the 150/35? Voltage is still within limits, but Amps is higher. I understand that the MPPT would limit to 35A - but would running a higher current pose a risk of damaging the MPPT in the long-term?

solar.jpg

Thanks, wolfandy

MPPT ControllersMPPT SmartSolar
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2 Answers
lehrling avatar image
lehrling answered ·

From the Blue Solar MPPT 100/35 manual:

1a) If more PV power is connected, the controller will limit input power.

From the VictronConnect manual:

Max charge current

Allows the user to set a lower maximum charge current.

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seb71 avatar image
seb71 answered ·

5 degrees C is minimum temperature you can have there?


Even so, 147.5V is quite close to the maximum limit (150V). I would be more worried about this.


What is the actual VOC of that PV panel?

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wolfandy avatar image wolfandy commented ·

Yeah, I live in Cape Town and that's about as cold as it gets here in winter. And that's also night-time temp. During the day it is around 13-16 degrees (@13deg it would be 143.9V)

VOC of the panel is 46.2V


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seb71 avatar image seb71 wolfandy commented ·

Ah. I think it's OK then.

When the Sun is high in the sky (summer), it will be also very hot.

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klim8skeptic avatar image klim8skeptic ♦ wolfandy commented ·

Unfortunately your low temps are out of range..

You might want to re-work your Voc calculations..
cape-town-weather-stats.png

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