Just a note about midnite's SOB rapid shutdown system. It does not seem to work with all inverters. I was recently helping someone with a Princeton Power Systems inverter add in rapid shutdown. There was some kind of line noise coming from the inverter that was causing the rapid shutdown system to not work at all. It held the string voltage down even when it should not have. The only way to get the string voltage back up was to physically disconnect the PV from the inverter. So we had to pull the rapid shutdown and will need to find another solution.
Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com Solar • Sustainability • Energy • Design B-Corporation Best for the World 2018 Honoree On Wed, May 29, 2019 at 7:07 PM Rick Brown < r...@solshineenergyalternatives.com> wrote: > Jerry, > > Check out Midnight Solar’s Rapid Shutdown Shut Off Box (SOB). > > http://www.midnightsolar.com/ > > rick brown > SolShine Energy Alternatives, LLC > Electrical & Solar Contracting Services > www.SolShineEnergyAlternatives.com > Check, Virginia 24072 > 540.808.9502 > > VA Class A Contractor Lic# 2705147660 > VA Master Electrician Lic# 2710062762 > VA Alternative Energy Systems Installer > NABCEP Certified PV Installation Professional 110112-21 > > On May 29, 2019, at 5:44 PM, Jerry Caldwell <solarcow...@yahoo.com> wrote: > > Dear Wrenches, > > We are installing a system for a project we did not design. The plans > specify 5 Ginlong Solis inverters. Ginlong does not make their own rapid > shutdown device, so units by Innovative Solar Products have been specified. > The Innovative Solar rapid shutdowns are made to order and will take 4 > weeks (not good for us). > > Does anyone know another mfr that makes rapid shutdown devices that are > compatible with other mfrs inverters? > > Thanks, > > Jerry Caldwell > Redwood Sun > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@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 > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@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 > >
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