Bruce, Wrenches Your case is interesting because everything was operating and in place but the range is tighter and only has 3 modules connected per string. In Hawaii we recorded close to 3000 watts m2, during a commissioning of a 100 k Satcon inverter had 3 equal conbiners, with only one combiner on we clipped the inverter at just over 100 KWAC on the display. Iradiance meter went out of range. In northern California had over 2000 watts m2 and poped the inverters with over volts. Edge of cloud, cold temps, higher elevations can really be an issue for so called safe zone. Jerry
On Nov 21, 2018 10:11 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 *"**Energizing the Rogue Valley"* 4115 S Pacific Hwy *Medford, OR 97501* *P:* 541.535.3965 *F:* 541.512.0061 *E:* 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 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
_______________________________________________ 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
