I have seen this pattern twice. 1. Lightning strike near the array. But the canals are bright white or deep black. I have two of those panels for testing and they still work sorta.
2. A bad batch of EVA or an over-cooked batch of EVA during assembly perhaps. Of course, the photo does not lend itself to determining the depth of the fracture: at the glass layer, at the EVA layer or at the silicon layer. If it is at the silicon layer, then the current would drop. Fort that panel, Each cell is a 0.5 volt generator at About 3 amps or so. If you crack the cell (Cleve it straight across) it becomes a 0.5 volt 1.5 amp cell. So I think it would mess with your vmp overall if the silicon was cracked. Thank you, Maverick Maverick Brown BSEET, NABCEP Certified Solar PV Installer ® President & CEO Maverick Solar Enterprises, Inc. Office: 512-919-4493 Cell: 512-460-9825 Sent from my HondaJet! On Nov 9, 2011, at 3:41 PM, penobscotso...@midmaine.com wrote: > Hello all, > We have a customer who has acquired, over the last ten years or so, a > large array with several different makes and models of panels, all > installed by a qualified electrician and the customer. They have done > an excellent job as far as self installed systems go. > He just sent me a picture of one of his Canadian Solar 210's with a > very unusual pattern on it (actually under the glass). The panel is > about three years old and shows no decline in output, but he is > concerned with the very obvious visible pattern. I have never seen > anything like it.I've attached it to this email. Anyone? > > Thanks for any suggestions or ideas, > Daryl > <CS210-Midkiffsm.jpg> > _______________________________________________ > 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 > _______________________________________________ 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
