Another example of problems associated with disconnecting under load. Not recommended. That’s why RSD is so hard to achieve.
William Miller Miller Solar.com 805-438-5600 www.millersolar.com On Sat, Apr 19, 2025 at 7:20 AM Drake Chamberlin via RE-wrenches < [email protected]> wrote: > Those devices were susceptible to catching fire. I saw a hole burned in a > roof from one of them. It is a great idea however. > > > *Drake Chamberlin* > > *Athens Electric LLC* > > *Ohio Electrical Contractor’s License 44810* > > *NABCEP Certified PV Installation Professional* > > > On 2025-04-18 11:46, Glenn via RE-wrenches wrote: > > There was a company that sold a mlpe that went online with a single module > in a string, that when temps were low, would bypass the module and prevent > string overvoltage. > I don't believe the company is in business any longer. > We re powered a PV system that had been installed with them a couple years > ago. Most of the devices were charred failures. > > -Glenn > > On Apr 18, 2025 11:36, Travis Knipple via RE-wrenches < > [email protected]> wrote: > > Has anyone encountered a system to use something like a Zener Circuit to > clamp a string input at 600Voc? > I've encountered many systems which, after designing for 600Voc, end up > with ~300-350Vmp, which is less than ideal on a long-distance run. Since > Voc should be a rare situation at the 2% temp, it seems like it would be > better to clamp the voltage in those situations, and design for optimum > performance in normal operation. > > -- > Travis Knipple > Senior Engineer > Hudson Solar Solutions LLC > Rhinebeck, NY 12572 > 518-539-8040 x408 | [email protected] > > PVIP# PV-111821-013612 > > > _______________________________________________ > 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 > > _______________________________________________ > 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 > >
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