I would think that if there is an internet connection that a call to tech support would make things quicker, since they have access to internal error codes which usually give a pretty good indication of what the problem is, or at least usually help direct where your troubleshooting efforts are best directed...
Howie Michaelson Sun Catcher NABCEP Certified Solar PV Installer™ Solar Electric & Heat Pumps Systems Sales & Service 802-272-0004 On Mon, Nov 1, 2021, 6:50 PM Dave Tedeyan <d...@sungineersolar.com> wrote: > The fuses are Ferraz Shawmut Trionic TR60R. 60A, 250V. I looked them up to > find that they are time delay, RK5 type. > > I would imagine that there is monitoring, but not being my installation, I > don't have access to it. That's a good idea though to get access to see > when this is happening. > > I am also waiting to hear back as to whether it is both legs, or only one. > I've been to the site only once so far, to initially diagnose the bad fuse. > At the time, I was hoping that it was just a bad fuse since everything else > looked okay. > > Lloyd, thanks for the insulation tip. Next time I head out there, I should > pull out the wires and take a closer look. Unfortunately it's a line side > tap, so I'm not excited about removing the tap, but may be worth it if I > can't find anything else. Although come to think of it, I did find a ground > fault in the wires for another system at the same site, so the original > installers' wire pulling technique is certainly suspect. > > Cheers, > Dave > > On Mon, Nov 1, 2021, 6:05 PM Jerry Shafer <jerrysgarag...@gmail.com> > wrote: > >> Does this system have monitoring, what time of day is this happening, the >> monitoring site should show output at time of failure, what leg is tripping >> both or one side? You may want to look at the fuses they are using, rapid >> blow, slow blow, rated for the duty these are being used for. You can also >> use a data logger to get a better idea of what and when >> >> Jerry >> >> On Mon, Nov 1, 2021, 1:45 PM Lloyd Hoffstatter < >> ll...@sunstruckconsulting.com> wrote: >> >>> Dave, >>> >>> >>> >>> My first thought would be a small nick in wire insulation going to >>> ground, causing the fuse to fail over time. >>> >>> We had a similar situation with a much larger system where the culprit >>> was hard to notice… >>> >>> >>> >>> Best regards, >>> >>> Lloyd >>> >>> >>> >>> Lloyd Hoffstatter >>> >>> Sunstruck Consulting >>> >>> >>> >>> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for >>> Windows >>> >>> >>> >>> *From: *Dave Tedeyan <d...@sungineersolar.com> >>> *Sent: *Monday, November 1, 2021 4:26 PM >>> *To: *RE-wrenches <re-wrenches@lists.re-wrenches.org> >>> *Subject: *[RE-wrenches] SolarEdge inverter blowing fuses >>> >>> >>> >>> Hi All, >>> >>> >>> >>> I am servicing a system that keeps blowing fuses on the AC side, >>> although it >>> >>> appears that everything is sized correctly. It is a SolarEdge >>> SE11400A-US inverter. >>> >>> Max continuous output current is 47.5A x 1.25 = 59.4A. There is a GE >>> TG3222R >>> >>> 60A AC disconnect, and it is wired up with #6 THHN wire. The terminals >>> were tight >>> >>> and there was no evidence of arcing or burning in the past. This is >>> indoors, and not >>> >>> exposed to sunlight. No extra conductors are in the conduit. >>> >>> >>> >>> But they say that they need to replace a fuse roughly once per month. >>> Has anyone >>> >>> seen this before? Could there be some kind of fault in the inverter >>> itself that >>> >>> occasionally induces extra current? Is there any way to tweak the >>> settings so that it >>> >>> actually produces a bit more than 11.4kw? I appreciate your thoughts. >>> >>> >>> >>> Cheers, >>> >>> Dave >>> >>> >>> >>> -- >>> >>> [image: Logo] <https://www.sungineersolar.com/> >>> >>> >>> *Dave Tedeyan, P.E. Owner | Sungineer Solar* >>> >>> *p: *he | him | his >>> * a: *1653 Slaterville Rd. | Ithaca, NY 14850 >>> *w:* www.sungineersolar.com <http://www.sungineersolar.com/> >>> *c:* (607) 288-2898 >>> >>> >>> >>> >>> _______________________________________________ >>> List sponsored by Redwood Alliance >>> >>> Pay optional member dues here: http://re-wrenches.org >>> >>> 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 >>> >>> There are two list archives for searching. When one doesn't work, try >>> the other: >>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >>> >>> List rules & etiquette: >>> http://www.re-wrenches.org/etiquette.htm >>> >>> Check out or update participant bios: >>> http://www.members.re-wrenches.org >>> >>> _______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> >> 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 >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org >> >> _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > 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 > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > >
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