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<p class=MsoNormal><span style='color:#993366'>Lee,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#993366'>Note also that the MSX series
was known to have some defective modules. They showed correct Voc and Isc but
essentially a flat I/V curve slope, meaning very weak output; that was a real
headscratcher for installers. I had a set of 12 from around 1994 with this
behavior. Solarex never recalled this bad series, but I heard about it from another
old-timer. Solarex replaced all of mine under warranty, but warranties back
then were 10 or 12 years, so by now expired. Of course, back then there was a
Solarex… But they knew which serial numbers were prone to be defective.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#993366'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#993366'>I would encourage you to test
array output before putting any effort into making it a GT system. If these are
low output, push hard on BP(?) to cover them as known to be defective. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#993366'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;color:#993366'>Allan Sindelar<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#993366'><a
href="mailto:Allan@positiveenergysolar.com">Allan@positiveenergysolar.com</a></span><span
style='font-size:11.0pt;color:#993366'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#993366'>NABCEP
Certified Photovoltaic Installer</span><span style='font-size:11.0pt;
color:#993366'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#993366'>EE98J
Journeyman Electrician</span><span style='font-size:11.0pt;color:#993366'><o:p></o:p></span></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;color:#993366'>Positive
Energy, Inc.<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:11.0pt;color:#993366'>3201 Calle
Marie<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;color:#993366'>Santa Fe, New
Mexico 87507<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;color:#993366'>505 424-1112<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#993366'><a
href="http://www.positiveenergysolar.com/">www.PositiveEnergySolar.com</a></span><span
style='font-size:11.0pt;color:#993366'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='color:#993366'><o:p> </o:p></span></p>
<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>Brian Teitelbaum<br>
<b>Sent:</b> Wednesday, November 18, 2009 11:33 AM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> Re: [RE-wrenches] strings of older solar panels<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Lee,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I also have an old spec sheet for the MSX60/64 that does not
state the max system voltage. It does, however, state that it passes a 2700VDC
frame/cell isolation test. I don’t know if that is the required test for
a 600VDC rating or not.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>If I remember correctly, they were not sold with bypass diodes
installed, so if you do use them in a system above 24V, be sure to add the
diodes.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Brian Teitelbaum<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>AEE Solar<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<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>Solar
Plexus<br>
<b>Sent:</b> Wednesday, November 18, 2009 9:33 AM<br>
<b>To:</b> RE-wrenches@lists.re-wrenches.org<br>
<b>Subject:</b> [RE-wrenches] strings of older solar panels<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hi Wrenches.<o:p></o:p></p>
<div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal><span class=apple-tab-span>
</span>I have a customer with 32 of the Solarex MSX-64 solar panels an a
battery-based system. He wants to go batteryless inverter. So I am
looking at 2 strings of 16 in series. But the solar panel
spec sheet doesn't say anything about <span class=apple-style-span><u>system</u></span>
voltage rating. Can I do this?<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span class=apple-tab-span>
</span> If one solar panel in the string is shaded, does it see the
full string voltage of around 280 volts? Is there something in the way
new panels are made that makes them more able to handle this voltage, or is it
just that they are now tested for it?<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span class=apple-tab-span>
</span>My guess is this request may be happenning a fair amount. Is there
a reason these panels are not listed on the California GoSolr website?<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>Lee Tavenner<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>Solar Plexus<o:p></o:p></p>
</div>
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