Daryl, That is what I thought at first. Very rare, but I suppose not impossible that I would have two inverters with bad arc fault detectors. But since we are still getting arc faults after replacing the inverters, I am thinking that it must be something else.
Cheers, Dave *--* *Dave Tedeyan* *Project Engineer* *Taitem Engineering, PC* 109 S. Albany Street, Ithaca, NY 14850 Voice: (607) 277-1118 x121 www.taitem.com On Thu, Nov 10, 2016 at 1:18 PM, <penobscotso...@midmaine.com> wrote: > There is at least one company (nameless at this point, but not SMA) that > has been providing replacements for swapping out faulty arc fault > detectors in their inverters. Could it be possible you have a bad > detector? > > Daryl > > > > > Hi All, > > > > Maybe someone will have some ideas for why a couple inverters keep arc > > faulting: > > > > -There are two SB7000TL-22 inverters, Sunpower branded. > > -3 Strings of 7 SPR-327's to each inverter. Kept separate until the > > inverter. > > -Ground mount about 50' from the shed where the inverters are located > > (indoors) > > -Simple grid connected system, no batteries. > > -There is a whole house generator co-located in the shed. > > -We interconnect by using piercing taps on the line side of the generator > > transfer switch > > -There has been only one power outage there since the system was > installed > > in April, but the generator fires up weekly. > > > > -The arc faults have been happening on both inverters. Sometimes only one > > at a time, sometimes both will go within a day of each other. > > -The events have been approximately one a month, but sometimes more, > > sometimes less. > > > > -We have already checked every single connection in the system twice, by > > two different people. > > -We have replaced the underground wires (and they looked just fine) > > -We have replaced all home runs. > > -We have replaced both inverters. > > -Arc faults are still happening. > > -Arc faults are not always on the same day/time of the week. > > > > I am wondering if this can be caused by the generator? > > Has anyone run into a situation like this or something similar? > > > > Thanks for your help, > > Dave > > > > *--* > > > > > > *Dave Tedeyan* > > *Project Engineer* > > > > *Taitem Engineering, PC* > > 109 S. Albany Street, Ithaca, NY 14850 > > Voice: (607) 277-1118 x121 > > www.taitem.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 > > > > > > > _______________________________________________ > 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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