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iamjosh35 avatar image
iamjosh35 asked

Will input high voltage damage the system?

  1. I have 5 12v panels in series feeding a 100/50 controller. Generally the voltage is between 85-95 volts, but does fluctuate a lot. Is this normal or are my second hand panels bad? Today i got a #33 input high voltage error as the voltage reached 100.5v momentarily. Should i be concerned about damaging the controller with high voltage?
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Mark avatar image
Mark answered ·

Yes you should be concerned.

Victron have expressed multiple times that you should ensure that the voltage limit is never exceeded (meaning you need to factor for the worst/best case conditions - cold ambient temperature + full sun) and if it is exceeded, there is no/minimal buffer, so it can/will result in permanent damage to the MPPT.

Since you have already exceeded the limit once, it's very likely that it will happen again & it could be worse next time around...

Best to remove or reconfigure your panel(s) to decrease the max open circuit voltage.

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dereck avatar image dereck commented ·

How does one reconfigure panels to reduce max open circuit voltage?

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