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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'>Larry,<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'>This was an AEE product, but we no longer sell it. It was made for us by Apollo Solar. You can check with them to see if any are still laying around. They bypassed a module when the temperature dropped to 40 degrees F.<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'>You could use SolarEdge inverters and Optimizers and have strings of up to 25 modules with no worry about overvoltage in cold weather.<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'>David Katz<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'>CTO & Founder<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'>AEE Solar Inc<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'>P: 707 825-1200<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'>F: 707 825-1202<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'>dkatz@aeesolar.com<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'>www.aeesolar.com<o:p></o:p></span></p></div><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> re-wrenches-bounces@lists.re-wrenches.org [mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>Larry Crutcher, Starlight Solar Power Systems<br><b>Sent:</b> Thursday, November 29, 2012 5:53 PM<br><b>To:</b> RE-wrenches<br><b>Subject:</b> [RE-wrenches] PV String Over-voltage<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Wrenches,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>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.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>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.<o:p></o:p></p><div><div><div><div><div><div><div><p class=MsoNormal><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black'><br>Thank you,<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black'><br>Larry Crutcher<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black'>Starlight Solar Power Systems<o:p></o:p></span></p></div></div></div><p class=MsoNormal><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black'><o:p> </o:p></span></p></div><p class=MsoNormal><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black'><o:p> </o:p></span></p></div><p class=MsoNormal><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black'><o:p> </o:p></span></p></div><p class=MsoNormal><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black'><br><br></span><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>