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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I’ve had good luck with both the SureSine from Morningstar and Exeltech for inverters. Couldn’t tell you the noise output.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Also, you may want to try Solar Converters Inc, or Samlex for DC to DC converters.<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><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Mike Kocsmiersky<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Principal<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Phone: 413 883-3144 <o:p></o:p></span></p><p class=MsoNormal><b><span style='font-size:16.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Spirit Solar<o:p></o:p></span></b></p><p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>www.SpiritSolar.net<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div><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";color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> Ray Walters [mailto:ray@solarray.com] <br><b>Sent:</b> Monday, March 28, 2016 6:47 PM<br><b>To:</b> RE-wrenches<br><b>Subject:</b> Re: [RE-wrenches] DC to DC converters<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>What about building a 30 vdc system (5 x 6v batteries in series) and adjust the settings on a Midnite Classic to work with that? How tight does the 30 vdc output need to be?<br><br>On inverters, I've had trouble with the Suresine, basically not working with GFCI outlets.<br>I keep trying different models of GFCIs, but they keep randomly tripping on 2 different systems. <br>Morningstar's list of "approved" GFCIs doesn't list any currently manufactured models, while calls to their tech support yields "Oh, that shouldn't be a problem, it should work with all GFCIs..."<br>Way too many free trips out trying to fix this, so I may have to abandon GFCI protection, or replace the inverters. <br>My suggestion for that small load: Exeltech 125. Better than grid waveform, and I recently pulled one out of corroded outdoor enclosure almost 15 years old: it looked terrible, but was still working fine. It would also be lower cost and fit in a smaller enclosure.<br><br><o:p></o:p></p><pre>R.Ray Walters<o:p></o:p></pre><pre>CTO, Solarray, Inc<o:p></o:p></pre><pre>Nabcep Certified PV Installer, <o:p></o:p></pre><pre>Licensed Master Electrician<o:p></o:p></pre><pre>Solar Design Engineer<o:p></o:p></pre><pre>303 505-8760<o:p></o:p></pre><div><p class=MsoNormal>On 3/28/2016 2:24 PM, Dan Fink wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal>Hi William; <o:p></o:p></p><div><p class=MsoNormal>30VDC is kind of odd, but 36VDC is common. The folks at Solar Converters might be able to fix you up with a custom one, or perhaps 36V is within the sat unit's input range.<o:p></o:p></p></div><div><p class=MsoNormal>As for the inverter, I've never gone wrong with the Morningstar SureSine. Slick little unit.<o:p></o:p></p><div><p class=MsoNormal><br clear=all><o:p></o:p></p><div><div><div><div><div><div><div><div><div><div><p class=MsoNormal><span style='font-size:9.5pt'>Dan Fink</span> <o:p></o:p></p><div><p class=MsoNormal><span style='font-size:9.5pt'>Adjunct Professor of Solar Energy Technology, Ecotech Institute<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt'>IREC Certified Instructor™ for: <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt'>~ PV Installation Professional<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt'>~ Small Wind Installer<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt'>Executive Director, Buckville Energy<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt'>NABCEP Registered Continuing Education Providers™<br><a href="tel:970.672.4342" target="_blank"><span style='color:#1155CC'>970.672.4342</span></a><o:p></o:p></span></p></div><p class=MsoNormal><br> <o:p></o:p></p></div></div></div></div></div></div></div></div></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Mon, Mar 28, 2016 at 1:44 PM, William Miller <<a href="mailto:william@millersolar.com">william@millersolar.com</a>> wrote:<o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial","sans-serif"'>Friends:</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial","sans-serif"'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial","sans-serif"'>I am designing a satellite data interface for a large off-grid system for a state highway department facility. We will be using the Outback Optics data capabilities along with equipment manufactured by Control by Web.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial","sans-serif"'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial","sans-serif"'>I’d like to run the satellite system on a battery power source so I can hope to use it when we need it most, when the power is down. We have a separate 24 volt battery bank remaining from a previous generator control system. The satellite system operates on 30 VDC at 2 amps.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial","sans-serif"'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial","sans-serif"'>My first choice is to find a DC to DC converter from nominal 24 volts. Do any of you know of one that you could recommend?</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial","sans-serif"'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><span style='font-family:"Arial","sans-serif"'>My second choice is to use a small inverter. Can anyone suggest one at this small wattage? I don’t know how good the power supply is at rejecting waveform distortion so I presume an inverter needs to be somewhat close to a sine wave.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial","sans-serif"'>Thanks in advance.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial","sans-serif"'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial","sans-serif"'>William Miller</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial","sans-serif"'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial","sans-serif"'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><img border=0 width=64 height=28 id="_x0000_i1025" src="cid:image001.jpg@01D1894A.B0713750" alt="Gradient Cap_mini"><br>Lic 773985<br><a href="http://www.millersolar.com/" target="_blank">millersolar.com</a><br><a href="tel:805-438-5600" target="_blank">805-438-5600</a></span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div></div></div><p class=MsoNormal><o:p> </o:p></p></div></div></div><p class=MsoNormal><br><br><br><o:p></o:p></p><pre>_______________________________________________<o:p></o:p></pre><pre>List sponsored by Redwood Alliance<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Change listserver email address & settings:<o:p></o:p></pre><pre><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre>List-Archive: <a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html">http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre>List rules & etiquette:<o:p></o:p></pre><pre><a href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Check out or update participant bios:<o:p></o:p></pre><pre><a href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</a><o:p></o:p></pre><pre><o:p> </o:p></pre></blockquote><p class=MsoNormal><o:p> </o:p></p></div></body></html>