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<div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Lucida Grande" size="3" style="font: 12.0px Lucida Grande">Hello William,</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal 'Lucida Grande'; min-height: 15px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Lucida Grande" size="3" style="font: 12.0px Lucida Grande">As a follow up to a similar problem:</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal 'Lucida Grande'; min-height: 15px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Lucida Grande" size="3" style="font: 12.0px Lucida Grande">I recently traced the problem to the generator. With the OB power system disconnected from the Kohler 8.5 RES and a halogen lamp connected to the generator, voltage surges at shutdown from one phase to neutral ranged from 135 to 168VAC. With the OB system connected the surge was 178VAC at shutdown. No tweaking in the mate allowed the inverter to drop input before the surge. A cool down time eliminates the surge with an AGS gen stop. To eliminate the surge with a manual shutdown from the mate a contactor controlled by the AGS signal was installed to interrupt the generator input. </font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal 'Lucida Grande'; min-height: 15px; "><br></div></div><div><br></div><br><div> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Lucida Grande'; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Lucida Grande'; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Lucida Grande'; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Lucida Grande'; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div><span class="Apple-style-span" style="color: rgb(187, 24, 6); font-family: Sand; font-size: 13px; ">Thirsty Lake Solar</span></div><div><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><font class="Apple-style-span" color="#000000">Jeff Wongstrom</font></div><div style="font-size: 11px; ">NABCEP Certified Solar Installer</div><div style="font-size: 11px; ">University of Montana College of Technology</div><div style="font-size: 11px; "><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 11px; ">Renewable Energy Instructor</span></span></div><div style="font-size: 11px; "><span class="Apple-style-span" style="font-size: 12px; ">406-219-1119</span></div><div><font class="Apple-style-span" color="#0000EE"><span class="Apple-style-span" style="text-decoration: underline; -webkit-text-decorations-in-effect: underline; "><font class="Apple-style-span" size="1"><a href="http://www.thirstylakesolar.com/">thirstylakesolar</a></font></span></font></div><div><font class="Apple-style-span" color="#0000EE" size="1"><span class="Apple-style-span" style="font-size: 9px; text-decoration: underline; "><a href="http://ace.cte.umt.edu/programs/energy.html">energytechnolo</a>gy</span></font></div></div></div></span></span></span></span></span> </div><br><div><div>On Jun 14, 2010, at 11:31 PM, William Miller wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"> <font size="3">Wrenches:<br><br> I have a customer that has a problem with a new generator. He has two VFX3648 inverters in Outback stacking. He acquired a new generator, a Kohler 12RES, a reputable make and model. Below is a description of the problem:<br><br> </font><font face="arial" size="2"><i>The 12RES seems to be operating OK except for one problem. At the end of a charging cycle, when the gen automatically shuts down and load goes back to the inverters, all lights, TVs, etc., flash, one TV shuts off, and a GFI trips. This has happened every time. It did not happen with the 15RES or the smaller back-up gen (which was disconnected manually). With the 15RES the same GFI would occasionally trip while the unit was charging and handling house load, but never at the auto shutdown point. I replaced the GFI, but it still trips. There are three GFIs in the house, but only one--always the same--trips.<br><br> <br> </i></font><font size="3">I suggested he adjust the AC2/Gen transfer delay to a lower number. He reduced it to minimum and this did not resolve the problem. I also had him verify that the AC source is selected as generator, which it is.<br><br> Do you have any suggestions?<br><br> Thanks in advance,<br><br> William Miller<br><br> <br> <x-sigsep></x-sigsep></font><p><font size="3"> <u>Please note new e-mail address and domain:<br><br> </u>William Miller <br> Miller Solar<br> Voice :805-438-5600<br> email: <a href="mailto:william@millersolar.com">william@millersolar.com</a><br> <a href="http://millersolar.com/" eudora="autourl">http://millersolar.com<br> </a>License No. C-10-773985<br> </font> </p><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">_______________________________________________</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">List sponsored by Home Power magazine</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Options & settings:</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><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></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">List-Archive: <a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">List rules & etiquette:</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">www.re-wrenches.org/etiquette.htm</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Check out participant bios:</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">www.members.re-wrenches.org</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div> </blockquote></div><br></body></html>