Corey - yes, nearby lightning can zorch PV array diodes en masse, and not always all the diodes at once. Provided they are accessible and not potted in epoxy DigiKey can provide replacements. When the module manufacturer has gone out of business, getting the precise specs can be impossible, but there's nothing special about bypass diodes, the usual products should work fine.
Dan Fink Buckville Energy IREC Certified Instructor™ for: ~ PV Installation Professional ~ Small Wind Installer NABCEP / IREC / ISPQ Accredited Continuing Education Providers™ 970.672.4342 On Mon, Oct 20, 2014 at 2:51 PM, Corey Shalanski < [email protected]> wrote: > Wrenches, > > Since my previous post (see below) we have recovered the faulty modules > and are now looking to replace the diodes in order to make them > functional again. I have had no success sourcing replacement diodes from > the original module manufacturer, Mage Solar. > > Can anyone recommend a source for replacement diodes? > > -- > Corey Shalanski > Joule Solar > New Orleans, LA > > ᐧ > On Tue, Aug 5, 2014 at 10:27 AM, < > [email protected]> wrote: > >> >> Message: 10 >> Date: Tue, 5 Aug 2014 09:03:09 -0500 >> From: Corey Shalanski <[email protected]> >> To: [email protected] >> Subject: [RE-wrenches] Diode Failure >> Message-ID: >> < >> ca+smqz1c7kszuqnvzqr0mmux3f2dt6ydum40iseczr2ejrg...@mail.gmail.com> >> Content-Type: text/plain; charset="utf-8" >> >> Wrenches, >> >> We recently were contacted by a customer who reported a lightning strike >> close to his house. His online monitoring revealed that 30 of 35 >> microinverters simultaneously stopped producing power. On initial visit to >> the jobsite we measured Voc on many modules - either 12V or 24V instead of >> rated 36V. On a second visit we discovered that bypass diodes - either 1 >> or >> 2 corresponding to observed voltage loss - had failed on each of the >> faulty >> modules. >> >> My question is: Can anyone support the theory that a nearby lightning >> flash >> can cause mass bypass diode failure? >> >> -- >> Corey Shalanski >> Joule Energy >> New Orleans, LA > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/[email protected]/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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