Is it possible that there was a lightning strike nearby, and the light
flash created the high max power readings? I'm calculating almost
1400 w/ m2, (3075/2205 x 1000 w/M2) which is high, but not insanely
high. They used to use flash testing to rate modules, so a fairly
instantaneous flash can do it.
Ray Walters
Remote Solar
303 505-8760
On 11/21/18 11:10 PM, br...@willpowerelect.com wrote:
Compadres,
I have 4 identical arrays of 3 strings of 3 Solarworld SW 245 mono
(2010 model) to FM80s. When designing, not exceeding 150 voc was
critical. No record temp data available. Location ~ 4,000' Pacific
Northwest. Recently replaced an FM80 with 6 blown FETs showing max
power at 3075 watts! This from a 2205 watt array into a 24 volt
battery. Max historical voc is ~120. My guess at record low temp is
-10F. tc%/ºC MPP doesn't get anywhere close. What would the WM2 need
to be in order to achieve 3075 watts on a 2205 watt array? BTW, 2 of
the four original chargers are still working fine and one of them also
shows 3075 watts max power. Edge of cloud effect against snow field at
bottom of array?
Cheers,
Bruce Fiero-RMI
*
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