Larry, You could make a device that does this via relays by either sensing temp, single panel or string voltage, and takes a panel or two out of the circuit when necessary. Maybe there is a product made for this already available.
Good luck On Thu, Nov 29, 2012 at 6:53 PM, Larry Crutcher, Starlight Solar Power Systems <la...@starlightsolar.com> wrote: > Wrenches, > > I seem to recall seeing something about a device for PV string > over-voltage protection by bypassing a module. I can't find any info by > Goggling. > > Some customers in the FAR north, ay, can see > 40° below zero with bright > sun and snow reflection. I want to be able to switch off one or more > modules in a string for protecting the controllers. > > Thank you, > > Larry Crutcher > Starlight Solar Power Systems > > > > > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > -- Mac Lewis * "Yo solo sé que no sé nada." -Sócrates *
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