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Min PV voltage for Voltronics VMII


MTS
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I have been experimenting with a voltronics VMII ( 2017 model) which has rated pv input 120V to 450V. I think its the Axpert range. Serial request returns VMII-5000. Seems as if SCC only kicks in if PV voltage is over 150V but will operate below this value once on. Has anyone else experienced this issue? Would have implications for solar panel selection.

I have also seen very different pv input voltages in other forums. Seem as if Voltronics might have changed PV specifications? Any colour much appreciated.

VMII pic.JPG

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10 hours ago, MTS said:

Seems as if SCC only kicks in if PV voltage is over 150V but will operate below this value once on. Has anyone else experienced this issue?

I don't think that this is an "issue"; most solar charge controllers work that way to prevent a "jagged start" in the mornings.

I believe that the 150 V minimum start voltage has always been there. The consensus seems to be a minimum of 6 panels, though I don't know if that changes if they are 60 versus 72 (or even 66) celled panels.

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