Hi Nick, We have about 16 SolArk's installed and have a single 12 kW that has that "bus imbalance" error every once in a while. It seems to be a specific appliance (electric mixer) that it does it with, and only occasionally. I spoke with SolArk about it and they have a small "plug in" that doesn't cost much that will absorb the imbalance on that inverter. I bought one and I'll report back on how it works. The client is really happy with his system and considers it a minor nuisance. I'll give him the plug in and see if it helps. The other 15 SolArk's (2 8kw and 13 12kw) do not have this problem and are working perfectly.
Daryl > Good morning Wrenches, > > I’ve strongly been considering using the SolArk 12K unit for awhile but > have heard from a few folks that there can be somewhat frequent issues > with the inverter shutting down from line to line imbalance. As little as > 1400 watts? I could see where these instances would be minimized with > attention to detail on balancing all the loads but if’s as little as a > delta of 1400 watts that might occur with something as innocent as a > toaster oven. Seems like it would also be less of an issue in a grid back > up or AC coupled scenario but for off grid I’d be bummed to be getting > calls every couple weeks from an off grid client that trusted me to offer > the right equipment. > > How much of an issue is this? Is it getting exaggerated? Those that have > NOT had this happening was it on a full time off grid site? > > Has it happened less on sites using the "Limited to Home” mode? I have an > upcoming project that was going to be setup with a couple Radians in HBX > mode and my thought was perhaps it might be an ideal solution there but if > the continuity of electrical service was going to be provided mainly > through batteries and inverting and not through the pass through relays > the majority of the time then the site might likely experience this issue > with imbalance shutdowns. > > There are many attractive features of the SolArk and I really like the > thought of taking advantage of the 185 amp DC charger versus the Radian’s > 115 but I’m kind of thinking the risks may outweigh the benefits if these > shutdowns occur even once every couple of months. Any of you have a long > enough history with them to chime in with your observations? Are they most > reliable for AC coupled with backup rather than off grid or the “Limited > to Home” mode? > > Thanks for your time, > Nick A Lucchese > > _______________________________________________ > 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 > > 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 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
