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 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
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