[RE-wrenches] Rapid Shutdown Compliance

[Eric Smiley]

We are running into the same problem with battery back-up, grid-tie
systems. Many Rapid Shutdown solutions turn off the array when utility
power is off, which isn't desirable. We have one client with an underground
service and the local AHJ wants the RS initiating device near the meter (as
our Canadian EC requires) which is hundreds of feet away. In this
circumstance but without back-up, we would usually just use an AC
disconnect near the meter to initiate RS, but now we're facing the prospect
of running a new control circuit all the way back to the pole or requesting
a variance.

Eric Smiley, P.Eng.

Project Manager, North Island

E:  eric at vecoop.ca

T:  1-888-386-0116 ext 702 (toll free)

C:  250-703-6004

W:  viridianenergy.ca <http://www.viridianenergy.ca>

<http://www.viridianenergy.ca/>

RENEWABLE POWER NOW


On Mon, 4 May 2020 at 17:04, <don at energysolarnow.com> wrote:

> Many customers ask about keeping power alive when the grid is down.
> Besides battery backup, I advocate the Secure Power feature of SunnyBoy
> inverters.
> But the problem with MLPE is that it is incompatible with Secure Power.
> When the grid goes down the MLPE disconnect each solar module's DC feed. So
> when the Secure Power activation switch is thrown there is no DC to power
> it up, even if the Secure Power output is fed to the MLPE power feedin.
> So I have only been able to install SunnyBoy Secure Power on existing
> systems without Rapid Shutdown MLPE.
>
> Does anyone have a work around for this, short of installing a separate
> small battery backed inverter to keep the MLPE alive?
>
> Don Barch
> Energy Solar
> _______________________________________________
> List sponsored by Redwood Alliance
>
> List Address: RE-wrenches at lists.re-wrenches.org
>
> Change listserver email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> List-Archive:
> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html
>
> List rules & etiquette:
> www.re-wrenches.org/etiquette.htm
>
> Check out or update participant bios:
> www.members.re-wrenches.org
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches_lists.re-wrenches.org/attachments/20200505/658668f7/attachment.htm>