Concern with mating 32Vpanel to IQ8-HC microinverters

D

DaneD

Member
Location
MA, USA
Occupation
HVAC/Solar
Sometimes roof size can dictate the panel we choose to mount. In this case we found a good match with Jinko JKM425N-54HL4-B panels, 12 panles fit the roof perfectly and they have a 21.76 efficiancy rating. We always use the Enphase compatibility calculator to make sure the microinverter and panel are compatible. However, I just noticed that the max output for this panel is 32V. I'm concerned that on a hazy day or a little shade the panel will the voltage below the IQ8-HC minimum start / operating voltage, 22V/18V.

Is this something I need to worry about or am I over thinking? I can change the panel, but that will reduce the size of the array down to 8 or 9 panels from 12.
 
You're looking at the maximum power voltage. The open circut voltage is above 38V. The operating voltage is unlikely to drop below the inverter MPP range and certainly won't drop below the operating range when there's any irradiance to speak of.
 
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