[RE-wrenches] Schneider Rapid shutdown with 2023 compliance

[Dave Angelini Offgrid Solar]

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  offgridsolar at sti.net
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 <re-wrenches-bounces at lists.re-wrenches.org> On Behalf 
> Of Mac Lewis via RE-wrenches
> Sent: January-01-24 12:00 PM
> To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
> Cc: Mac Lewis <maclewis1 at gmail.com>
> 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
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Links:
------
[1] http://members.sti.net/offgridsolar/
[2] https://offgridsolar1.com/
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