High voltage disconnect would do this, is the site monitored Fun times
On Tue, Aug 27, 2024, 2:47 PM jay via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > I have a buddy in tech support at Fortress. > > I asked him and he said that elevated absorb volts above 55.2 could cause > this situation. > And then the power cycle would reboot the BMS. > > I am presuming its open loop, and the fact you mentioned that there was > more PV and then the shut down sure might be connected. > You might check the charge voltages/time to make sure they are correct and > I can’t remember if the classic has battery sense wire connections. > > jay > > > > > > > > On Aug 27, 2024, at 2:51 PM, Ray Walters via RE-wrenches < > re-wrenches@lists.re-wrenches.org> wrote: > > The SPD was on one of the PV inputs before it came into the house. There > were two Classics, each fed with its own PV input and SPD. It actually > caused an underground splice to fail (high resistance) which I replaced the > splice and restored full voltage, and both Classics were working fine. > Just seems unlikely ( but not impossible) that the surge would make it past > the Classic without damage, but then damage the Fortress BMS in an > otherwise imperceptible manner. That is our current best theory at the > moment though. I added an SPD on the 48 v buss, before this latest total > shutdown. > > Ray Walters > On 8/27/2024 2:35 PM, Dave Angelini Offgrid Solar via RE-wrenches wrote: > > When I have had someone lose an SPD (I assume it was on DC buss) there is > often latent damage (shows up later) to many of the devices. In a Hi Rel > mode, it is recommended to replace it all. Most offgrid is not that > critical but try telling that to someone with rotten food. > > The freezers and reefers are often full of spoils that smells never go > away. YUK ! > > > > *Dave Angelini Offgrid Solar > "we go where powerlines don't" > <http://members.sti.net/offgridsolar/>https://offgridsolar1.com/ > <https://offgridsolar1.com/> <http://members.sti.net/offgridsolar/> > e-mail offgridso...@sti.net <offgridso...@sti.net> > text 209 813 0060* > > > On 2024-08-27 1:02 pm, Ray Walters via RE-wrenches wrote: > > Greetings All; > > I have Fortress Battery installation with a pair of E Vault batteries set > up in a Master/ Slave arrangement. Its been working fine for over a year, > but the customer just had a complete shutdown of the batteries which left > multiple freezers, and refrigerator with rotting food. When he rebooted > the batteries by turning on/off the main breaker on each, they both come up > and showed 100% SOC on the Master, and 98% on the other. There were no > fault codes. I just recently installed a larger PV array, and so the > system has been reaching full charge every morning. > > I have multiple calls in to Fortress, but not hearing anything back from > them at all. We did have a lightning surge event a few months ago, that > damaged a Midnite SPD (first ever for me), and took out the control board > on the generator. One VFX inverter has an LED out, but we only use two > inverters of the Quad stack, so I just switched to another inverter. All > other equipment appeared fine: Midnite controllers, rest of the Outback VFX > quad stack, and never any issues seen with the Fortress batteries. > > The other odd thing, is since he rebooted the batteries, the system is > working fine, and recharging to 100% by 9:30 am as before. Is it > possible the Fortress BMS were damaged and are now having an intermittent > shutdown issue? I did ask him to temporarily disconnect the comms between > batteries, in case it is a bad BMS on one, it will isolate it from the > other. > > This is a tough one to figure out, since it hasn't happened again, and > there are no fault codes. The Mate 3 shows a low frequency AC code, but > that's usually just from the generator shutting down. Any help, ideas, > experiences, would be greatly appreciated. > > Thanks, > > Ray Walters > Remote Solar > > _______________________________________________ > 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. 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