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vronsky avatar image
vronsky asked

MPPT logfile shows higher PV voltages than Voc spec

The logfile of my Bluesolar MPPT charger shows max. PV voltages that are higher that my panel's Voc spec: 23,4V.

Logged voltages go as high as 23.92V

How's this possible, can it be harmful ?


THANKS,

V.

MPPT SmartSolarpv limit
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pwfarnell avatar image
pwfarnell answered ·

The VOC is given at a standard temperature, if the panels are below the standard temperature then VOC will be higher. This is normal behaviour and nothing to worry about.

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Alexandra avatar image Alexandra ♦ commented ·
You will also note on the panel specifications that there is a tolerance/variance value (some panels at +/-3%). So if at 25°C would also be within acceptable vairance.
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