You said that very nicely Kevin !
If this were for offgrid, I would make the inspector happy and do even
more than Kevin suggests after he is gone. 😉
Link to RS shutdown
https://www.youtube.com/watch?v=wMoVXq4m1wk&t=10s
Dave Angelini Offgrid Solar
"we go where powerlines don't"
[1]https://offgridsolar1.com/ [2] [1]
e-mail [email protected]
text 209 813 0060
On 2024-01-02 10:24 am, Kevin Pegg via RE-wrenches wrote:
Hi Mac,
I've just gone through a couple installations with a similar situation.
The hardware you list does work as intended. I had to go through three
different suppliers to get all the components.
One thing that I didn't find clear in the MPPT RS documentation is when
a shutdown is initiated, it shuts __everything__ on the Xanbus network
down. All devices go into standby mode. Gen shuts down if running.
Power is off. Not just the PV via Tigo modules. Had to develop client
instruction sheet as to how to power up after a shutdown.
On one hand, I can see why a single point shutdown is desired outcome.
But it concerns me that it's vulnerable to abuse. If the whole system
shutdown is not desired, the Xanbus connection can be omitted and then
RS will be limited to the PV modules only.
Kevin
From: RE-wrenches <[email protected]> On Behalf
Of Mac Lewis via RE-wrenches
Sent: January-01-24 12:00 PM
To: RE-wrenches <[email protected]>
Cc: Mac Lewis <[email protected]>
Subject: [RE-wrenches] Schneider Rapid shutdown with 2023 compliance
Hello Wrenches,
I need to retrofit a Schneider XW+ system with a rapid shutdown system.
The owner purchased this equipment about 4-5 years ago but is trying
to get it past a very intense inspector.
To me, it looks relatively straightforward to get NEC 2023 rapid
shutdown compliant using Tigo TS4AF, and adding Schneider's MPPT
Disconnect RS and external rapid shutdown initiator. It's a little
strange though because it has 2017 NEC compliant all over the
documentation but I believe we are good through NEC 2023 because
shutdown occurs at a module level and the Disconnect RS can take care
of arc-fault monitoring.
Does anyone have any documentation for the MPPT Disconnect RS that
doesn't specifically call out (only) NEC 2017 compliant?
Or if this is not a good approach and is not reliable, I would
appreciate your input as well.
Cheers!
--
Mac Lewis
"Yo solo sé que no sé nada." -Sócrates
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org
List Address: [email protected]
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/[email protected]/
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
Links:
------
[1] http://members.sti.net/offgridsolar/
[2] https://offgridsolar1.com/
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org
List Address: [email protected]
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/[email protected]/
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
