HI Bruce, OB specifies 2000 watts STC max for the FM-80 at 24v.
Gotta say I've never measured 3X solar irradiance, impressive. jay peltz power > On Nov 22, 2018, at 7:37 AM, Solar <dahlso...@gmail.com> wrote: > > I live in Northern MN and we get very cold days (-50F +) and very crisp clear > days when it’s this cold. I’ve seen 1333 WM2 on the same plane as my array > with snow reflecting sun light. Using the daystar irradiance meter. I am at > 1400’ so your increased elevation with very cold temps, snow and edge of > cloud could maybe cause it. Maybe a calculation of extremes could give you an > idea. Rearrange the formula and get the irradiance needed to cause this high > of watts. > > Jesse Dahl > > NABCEP PV Installation Professional > IBEW Local 292 - Electrician > Electrical/Solar PV Instructor - HCC > > Sent from my iPhone > > On Nov 22, 2018, at 12:10 AM, <br...@willpowerelect.com > <mailto:br...@willpowerelect.com>> <br...@willpowerelect.com > <mailto: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 >> >> <sigimg0> >> >> "Energizing the Rogue Valley" >> >> 4115 S Pacific Hwy >> Medford, OR 97501 >> >> P: 541.535.3965 >> F: 541.512.0061 >> E: br...@willpowerelect.com <mailto:br...@willpowerelect.com> >> W: Willpower Electric, LLC <http://www.willpower-electric.com/> >> >> CCB 191852 >> Oregon Electrical Contractor C681 >> NABCEP Certified Solar (PV) Installer 031409-38 >> DUNS 191470363 >> Energy Trust of Oregon Trade Ally Solar (PV) Installation & Energy Efficient >> Commercial Lighting Programs >> >> >> **This email may contain information that is privileged, confidential, or >> otherwise exempt from disclosure under applicable law. If you are not the >> addressee, or if it appears that you have received this email in error, >> please advise me immediately by reply email, keep the contents confidential, >> and immediately delete the message and any attachments from your system. >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: RE-wrenches@lists.re-wrenches.org >> <mailto:RE-wrenches@lists.re-wrenches.org> >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> <http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org> >> >> List-Archive: >> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >> <http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html> >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm <http://www.re-wrenches.org/etiquette.htm> >> >> Check out or update participant bios: >> www.members.re-wrenches.org <http://www.members.re-wrenches.org/> >> > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org >
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