My comment would be in a closed loop battery power system the BMS is in
charge and feeds back into faults and warnings about the battery,
Inverter/charger, and other devices. Open loop does not integrate all of
the devices. Closed loop is all we should be using these days, in my
opinion!
Closed loop will also will do a sanity check and adjust charge/discharge
settings based on Soc. Open loop systems can lose a setting from
generator/grid
surges. This could be the case here. It could also just be a Radian that
has died.
I would look in the Radian for history clues of what happened.
Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail [email protected]
text 209 813 0060
On 2022-12-27 3:34 pm, Peter Giroux via RE-wrenches wrote:
Nick
Thank you for doing this. I have been able to learn more. I did the
original install 5 + years ago. Ac coupled system, has run great since
installed. Replaced customers wet cells 1.5 years ago with a fortress
evault and had Outback help with all of the programing while on site.
System has been flawless until two days ago when the customer smelled
smoke at 2 am in the morning.
We thought the battery got hot and melted the container on top of the
battery which in turn melted the conduit ( only one section, the other
was fine ) running into the Radian. Pulled the lid off the battery and
the insides were fine, including the BMS board I replaced last summer.
No damage to the underside of the lid Re heat or ?? so I had the
customer pull off the cover to the radian and the wires were intact and
undamaged. Turns out one of the transformers/ power stages was burnt
with lots of black soot all over it. So as of today it looks like the
culprit is the radian. Headed up there next week to go over the whole
system
Any thoughts or ideas are welcome, please and thank you.
Peter
ASAE
From: Nick A Lucchese <[email protected]>
Sent: Tuesday, December 27, 2022 3:47 PM
To: RE-wrenches <[email protected]>
Cc: [email protected]
Subject: Radian and Fortress incident
Greetings Peter,
I created a new subject line out William's previous "utility
transformer" thread for your incident. Any more details surface about
this installation? Eflex or Evault? Were all the settings programmed by
yourself or someone else you trust? Installed to specifications
provided by each manufacturer? Do you know if it was charging by PV
controllers or the Radian at time of fire? One battery of an entire
bank that failed? Physical connections appear to all be of full
integrity? I've had a control board on a Radian completely melt and
appear to have been on fire for a brief moment due to extended
operation pushing current limits on the AC side but my experience with
the Eflex has been great so far other than a minor firmware snag
initially. Only reason I used it instead of Blue Ion was due to their
lack of an exterior cabinet compared to the Eflex's IP65 rating. Hope
you can provide more details once you have time to fully investigate.
Highly likely I will be responsible for both of these products on
future projects.
Nick
On Dec 26, 2022, at 6:40 AM, Peter Giroux via RE-wrenches
<[email protected]> wrote:
Morning all. Just got a call from a customer with a radian and fortress
battery that caught fire. Has anyone had any issues with either unit??
We have numerous systems with combos of both and no issues. System has
been in place for well over a year, climate controlled garage and
system has worked well. Did a BMS board replacement earlier this year.
Any and all help appreciated.
Thank you
Peter Giroux
ASAE
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