How quickly, after reset, do you see a new arc-fault error? Same day? Month later?
Have you tested string volts/amps? On Thu, June 18, 2015 8:30 am, Howard \"Scot\" Arey wrote: > I need some help please! I'm quickly losing credibility with two of my > customers. > > > > We have two installations with Sunpreme GxB 350 bi-facial modules and > Fronius IG inverters. They keep throwing Error code 240 - arc fault on > the Fronius IG. > > > > > We've been up and down these installation three times checking > connections, replacing connectors, tightening connections, checking for > chafed wires. Nothing to cause any visible angst. > > > > > The team here is wondering is perhaps the module itself might be the > source of the problem, with some DC arcing inside the J-Box. Any > thoughts? We can't open the j-box on an broken module (be careful > handling frameless glass on glass modules :)) because there doesn't appear > to anything accessible with modern potted j-boxes. > > > > As for the conditions when we get these arc fault codes - typically the > peak of a sunny day when they're making max power. > > > > Each of the installations is a bit different. On the 7KW install with > Fronius 7.5, we've run the two strings (10 modules each) back to the > inverter separately. On the 10.5KW install with the Fronius 10.0, we ran > 3 > strings of 10 to a combiner box, then one set of conductor back to the > Fronius 10.0 where we used the distribution plate to spead the amperage > across the six string input channels. > > > > I'm stuck - any thoughts on other potential arc-fault causes? > > > > > Howard "Scot" Arey > > > 254-300-1228 > > > scot.a...@solarcentex.com <mailto:scot.a...@solarcentex.com> > > > > > > > > _______________________________________________ > 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.ht > ml > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > Matthew Partymiller Solar Energy Solutions LLC (877) 312-7456 m...@solar-energy-solutions.com _______________________________________________ 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
