<div dir="ltr">Hi Wiliam,<br><br>The max voltage rating of the M250 is 48V. When you ran the compatibility checker, did you use 154mv/°C? You can either input the mV/°C or the %/°C. You will need to be sure that you convert the 0.154 to 154mV.<br>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Sep 30, 2013 at 12:24 PM, William Miller <span dir="ltr"><<a href="mailto:william@millersolar.com" target="_blank">william@millersolar.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div link="blue" vlink="purple" lang="EN-US"><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">Nick:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">What is the upper voltage limit for the M250? What happens when that voltage is exceeded?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">I am trying to use Siemens SP75 modules (two in series) and Shell SQ-150-PC. Below are the specs. Note that two SP75s in series, if you multiply the voltages by two, is identical to the SQ-150 except for the temperature compensation. I am not sure what to do with the temperature compensation value if I put two SP175s insereis. Do you know?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif""><u></u> <u></u></span></p>
<table style="border-collapse:collapse;border:none" border="1" cellpadding="0" cellspacing="0"><tbody><tr style="min-height:38.25pt"><td style="width:120.7pt;border:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:38.25pt" nowrap valign="top" width="161">
</td><td style="width:11.8pt;border:solid windowtext 1.0pt;border-left:none;padding:0in 5.4pt 0in 5.4pt;min-height:38.25pt" nowrap valign="top" width="16"><p class="MsoNormal"><b><span style="font-family:"Arial","sans-serif"">Qty<u></u><u></u></span></b></p>
</td><td style="width:43.05pt;border:solid windowtext 1.0pt;border-left:none;padding:0in 5.4pt 0in 5.4pt;min-height:38.25pt" nowrap valign="top" width="57"><p class="MsoNormal"><b><span style="font-family:"Arial","sans-serif"">Watts<u></u><u></u></span></b></p>
</td><td style="width:37.0pt;border:solid windowtext 1.0pt;border-left:none;padding:0in 5.4pt 0in 5.4pt;min-height:38.25pt" nowrap valign="top" width="49"><p class="MsoNormal"><b><span style="font-family:"Arial","sans-serif"">Ext<u></u><u></u></span></b></p>
</td><td style="width:48.0pt;border:solid windowtext 1.0pt;border-left:none;padding:0in 5.4pt 0in 5.4pt;min-height:38.25pt" nowrap valign="top" width="64"><p class="MsoNormal"><b><span style="font-family:"Arial","sans-serif"">Watts<u></u><u></u></span></b></p>
</td><td style="width:48.0pt;border:solid windowtext 1.0pt;border-left:none;padding:0in 5.4pt 0in 5.4pt;min-height:38.25pt" nowrap valign="top" width="64"><p class="MsoNormal"><b><span style="font-family:"Arial","sans-serif"">Pmax<u></u><u></u></span></b></p>
</td><td style="width:50.55pt;border:solid windowtext 1.0pt;border-left:none;padding:0in 5.4pt 0in 5.4pt;min-height:38.25pt" nowrap valign="top" width="67"><p class="MsoNormal"><b><span style="font-family:"Arial","sans-serif"">Vpmax<u></u><u></u></span></b></p>
</td><td style="width:48.0pt;border:solid windowtext 1.0pt;border-left:none;padding:0in 5.4pt 0in 5.4pt;min-height:38.25pt" nowrap valign="top" width="64"><p class="MsoNormal"><b><span style="font-family:"Arial","sans-serif"">Ipmax<u></u><u></u></span></b></p>
</td><td style="width:48.0pt;border:solid windowtext 1.0pt;border-left:none;padding:0in 5.4pt 0in 5.4pt;min-height:38.25pt" valign="top" width="64"><p class="MsoNormal"><b><span style="font-family:"Arial","sans-serif"">Isc<u></u><u></u></span></b></p>
</td><td style="width:48.0pt;border:solid windowtext 1.0pt;border-left:none;padding:0in 5.4pt 0in 5.4pt;min-height:38.25pt" valign="top" width="64"><p class="MsoNormal"><b><span style="font-family:"Arial","sans-serif"">Voc<u></u><u></u></span></b></p>
</td><td style="width:72.3pt;border:solid windowtext 1.0pt;border-left:none;padding:0in 5.4pt 0in 5.4pt;min-height:38.25pt" valign="top" width="96"><p class="MsoNormal"><b><span style="font-family:"Arial","sans-serif"">Temp Coefficient of Voc<u></u><u></u></span></b></p>
</td></tr><tr style="min-height:51.0pt"><td style="width:120.7pt;border:solid windowtext 1.0pt;border-top:none;padding:0in 5.4pt 0in 5.4pt;min-height:51.0pt" valign="top" width="161"><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Siemens PC4JF (Same as the SP75?)<u></u><u></u></span></p>
</td><td style="width:11.8pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:51.0pt" nowrap valign="top" width="16"><p class="MsoNormal" style="text-align:right" align="right">
<span style="font-size:10.0pt;font-family:"Arial","sans-serif"">12<u></u><u></u></span></p></td><td style="width:43.05pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:51.0pt" nowrap valign="top" width="57">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">75<u></u><u></u></span></p></td><td style="width:37.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:51.0pt" nowrap valign="top" width="49">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">900<u></u><u></u></span></p></td><td style="width:48.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:51.0pt" nowrap valign="top" width="64">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">75<u></u><u></u></span></p></td><td style="width:48.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:51.0pt" nowrap valign="top" width="64">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">75<u></u><u></u></span></p></td><td style="width:50.55pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:51.0pt" nowrap valign="top" width="67">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">17<u></u><u></u></span></p></td><td style="width:48.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:51.0pt" nowrap valign="top" width="64">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">4.4<u></u><u></u></span></p></td><td style="width:48.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:51.0pt" nowrap valign="top" width="64">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">4.8<u></u><u></u></span></p></td><td style="width:48.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:51.0pt" nowrap valign="top" width="64">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">21.7<u></u><u></u></span></p></td><td style="width:72.3pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:51.0pt" nowrap valign="top" width="96">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">-0.077<u></u><u></u></span></p></td></tr><tr style="min-height:25.5pt"><td style="width:120.7pt;border:solid windowtext 1.0pt;border-top:none;padding:0in 5.4pt 0in 5.4pt;min-height:25.5pt" nowrap valign="top" width="161">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Shell SQ-150<u></u><u></u></span></p></td><td style="width:11.8pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:25.5pt" nowrap valign="top" width="16">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">3<u></u><u></u></span></p></td><td style="width:43.05pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:25.5pt" nowrap valign="top" width="57">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">150<u></u><u></u></span></p></td><td style="width:37.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:25.5pt" nowrap valign="top" width="49">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">450<u></u><u></u></span></p></td><td style="width:48.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:25.5pt" nowrap valign="top" width="64">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">150<u></u><u></u></span></p></td><td style="width:48.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:25.5pt" nowrap valign="top" width="64">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">150<u></u><u></u></span></p></td><td style="width:50.55pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:25.5pt" nowrap valign="top" width="67">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">34<u></u><u></u></span></p></td><td style="width:48.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:25.5pt" nowrap valign="top" width="64">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">4.4<u></u><u></u></span></p></td><td style="width:48.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:25.5pt" nowrap valign="top" width="64">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">4.8<u></u><u></u></span></p></td><td style="width:48.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:25.5pt" nowrap valign="top" width="64">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">43.4<u></u><u></u></span></p></td><td style="width:72.3pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;min-height:25.5pt" nowrap valign="top" width="96">
<p class="MsoNormal" style="text-align:right" align="right"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">-0.161<u></u><u></u></span></p></td></tr></tbody></table><p class="MsoNormal">
<span style="font-family:"Arial","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">Our record low is -10 C and average high is 38C.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">If I enter the data for the Shell, the calculator shows they are compatible with the M250. Entering the data for two SP75s using -0.077 for Temp Comp (SP75) the tool says not. If I use double (-0.154), then the two SP75s are compatible. What is your determination?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">Thanks,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">William<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif""><u></u> <u></u></span></p><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""> <a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a> [mailto:<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>Nick Soleil<br>
<b>Sent:</b> Monday, September 30, 2013 9:56 AM<br><b>To:</b> RE-wrenches<br><b>Subject:</b> Re: [RE-wrenches] Using legacy modules on micro-inverters<u></u><u></u></span></p><div class="im"><p class="MsoNormal"><u></u> <u></u></p>
<div><div><div><p class="MsoNormal" style="margin-bottom:12.0pt">Hi wrenches,<u></u><u></u></p></div><p class="MsoNormal" style="margin-bottom:12.0pt">The M250 is not limited to 60 cell modules only. The M250 has an expanded voltage window which will allow for it to be paired with a wider range of modules. Enphase has an online module compatibility calculator which can be used for checking a specific pairing in a specific location, at:<br>
<br> <a href="http://enphase.com/module-compatibility-calculator-m250-update/" target="_blank">http://enphase.com/module-compatibility-calculator-m250-update/</a>. <u></u><u></u></p></div><div><p class="MsoNormal">Keep in mind that many of the high efficiency, higher voltage, 72 cell modules will not be compatible.<u></u><u></u></p>
</div><div><p class="MsoNormal"><u></u> <u></u></p></div></div><div><p class="MsoNormal" style="margin-bottom:12.0pt"><u></u> <u></u></p><div><p class="MsoNormal">On Sat, Sep 28, 2013 at 6:45 AM, Jay Peltz <<a href="mailto:jay@asis.com" target="_blank">jay@asis.com</a>> wrote:<u></u><u></u></p>
<div><div><p class="MsoNormal">Hi Bill<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Is there a new M250?<u></u><u></u></p></div><div><p class="MsoNormal">Enphase shows the 250 at 48vdc max and states 60 cell only modules. <u></u><u></u></p>
</div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">That would be nice if it did both<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Jay<u></u><u></u></p>
</div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Peltz power. <u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div></div></div></div></div></div></div><br>_______________________________________________<br>
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<br></blockquote></div><br><br clear="all"><br>-- <br><p style="margin:0in 0in 0.0001pt"><span style="font-size:14pt">Cordially,</span></p><p style="margin:0in 0in 0.0001pt"><b><span style="font-size:14pt">Nick Soleil</span></b><span style="font-size:14pt"></span></p>
<p style="margin:0in 0in 0.0001pt"><b><span>Field Applications Engineer<br></span></b></p>
<p style="margin:0in 0in 0.0001pt"><b><span style="color:rgb(227,108,10)">Enphase Energy</span></b></p><p style="margin:0in 0in 0.0001pt"><span></span><span>Mobile: <a value="+17073212937">(707) 321-2937</a></span></p>
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<p><span style="font-size:11pt;font-family:"Garamond","serif";color:rgb(31,73,125)"><img src="cid:image002.jpg@01CCADC1.BF83EFD0" alt="nabcep logo" border="0" height="38" width="96"> Certified
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