Hi jerry Can you give any insight as to the failure mechanism?
I guess I don't understand why bad AC would damage the inverter, I mean besides the obvious bad equipment design. Jay Peltz power. > On Jan 29, 2016, at 3:18 PM, Jerry Shafer <jerrysgarag...@gmail.com> wrote: > > We have seen something very close, it appears that the gwnny will always win > this war. > Jerry > >> On Jan 29, 2016 1:14 PM, "Jason Szumlanski" >> <ja...@floridasolardesigngroup.com> wrote: >> I'm looking at two Eaton PV250 inverters that failed simultaneously as far >> as we know (not my install). Everything checked out normal, but no display >> and no power output. I suspect both boards are bad. Upon digging into the >> scenario I discovered that the owner had a whole-house generator transfer >> switch installed a while back, after the PV was installed. The PV is a load >> side interconnection, so calamity should have been expected. >> >> What are the odds that the generator caused the inverter boards to fail? I >> was always under the impression that it was more likely for a generator >> component to be damaged than an inverter component in this scenario. It >> could be coincidence and the inverters may have just failed around the same. >> >> Note: ~10kW PV, 25kW Generator >> >> Side note: The PV was interconnected at a 50A breaker on a 200A bus bar in >> the main distribution panel and somehow passed inspection by an AHJ that >> shall not be named... Over 120%, and also not the correct OCPD rating anyway >> for these two inverters. Passed plan review and inspection... Contractor out >> of business... surprise! >> >> >> Jason Szumlanski >> Florida Solar Design Group >> >> _______________________________________________ >> 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 >
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