<div dir="ltr"><div><br></div><div>HI Jeff</div><div>The overriding design constraints were to try to make an older existing system and a new state of the art system perform like one unit. It was a bad premise to start with. I let the client talk me into this design against my better judgment. It would have been less expensive for my company to simply scrap the old system, add another inverter to the new system, and add the DC array power to the new system from the existing system. Live and learn!</div><div><br></div><div>Thanks for chiming in, </div><div><br></div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div style="font-size:small;color:rgb(80,0,80)"><div><font face="georgia, serif">Vince McClellan</font></div><div><font face="georgia, serif">Energy Design</font></div><div><font face="georgia, serif">NABCEP PV Installation Professional</font></div><div><font face="georgia, serif">p. <a href="tel:(541)%20485-8122" value="+15414858122" style="color:rgb(17,85,204)" target="_blank">(541) 485-8122</a> f. <a href="tel:(541)%20338-8202" value="+15413388202" style="color:rgb(17,85,204)" target="_blank">(541) 338-8202</a></font></div></div><div style="font-size:small;color:rgb(80,0,80)"><br></div><div style="font-size:small;color:rgb(80,0,80)"><span style="font-family:"arial narrow",sans-serif">If you have received this email and are not the intended recipient please delete this email. Copying, or using any part, content, or attachment of this email is strictly prohibited. </span></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jan 20, 2022 at 1:02 PM Tump <<a href="mailto:tump@swnl.net">tump@swnl.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="overflow-wrap: break-word;">I must agree spent quite a bit of time trying to figure WTF over. Then i saw it was an architect design. He must have been paying himself cause I have no idea why someone would want to try to integrate all this stuff while the tech support had nothing to say but; "that won\u2019t work\u201d. Hope for your sake it was T&M. T<br><div><blockquote type="cite"><div>On Jan 20, 2022, at 2:25 PM, Jeff Clearwater <<a href="mailto:jeffc@villagepowerdesign.com" target="_blank">jeffc@villagepowerdesign.com</a>> wrote:</div><br><div><span style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline">Hi Vince and All,</span><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline">Loving this insightful discussion on the technical subtleties of this set-up - but I'm wondering if I'm missing the Why? What is this design trying to accomplish? What were the overriding design drivers?</span><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline">Is it a case of incremental design where one system needed to grow but a separate system was added? Are they physically close to each other?</span><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline">Are you trying to leverage the outputs so the loads have the advantage of both outputs simultaneously?</span><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline">If you solve this one AC coupling cut-out issue - is the system then optimized and exactly what does that optimization accomplish?</span><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline">I understand if you don't want to take the time to explain all this but I'm just curious - is there a useful architecture out there that I'm missing?</span><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline">Can the PV and battery resources be combined into one system? - (perhaps by selling the AGMs and Radian and buying more lithium and Sol-Arks?)</span><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline">Seems like control and fine tuning and troubleshooting ongoing would be a hassle with such complexity - but then again we sometimes work with what we got!</span><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline">As Nick said - they are lucky to have you! Question is how to best serve that design!</span><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline">Best,</span><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline">Jeff</span><span style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"></span><br style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><blockquote type="cite" style="font-family:Times-Roman;font-size:18px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;border:0px none"><div style="margin:30px 25px 10px"><div style="width:622px;border-top:2px solid rgba(146,154,163,0.7);padding-top:10px"><div style="display:inline-block;white-space:nowrap;vertical-align:middle;width:304.766px"><a href="mailto:vince@solarenergydesign.com" style="padding-right:6px;font-weight:500;color:rgb(72,86,100);text-decoration:none" target="_blank">Vince McClellan</a></div><span> </span> <div style="display:inline-block;white-space:nowrap;vertical-align:middle;width:298.547px;text-align:right"><font color="#909AA4"><span style="padding-left:6px">January 20, 2022 at 10:32 AM</span></font></div></div></div><div style="color:rgb(144,154,164);margin-left:24px;margin-right:24px"><div dir="ltr">Thanks again for your input. I'll check the Blue Ion battery voltage the next time on site with and without the Radian AC coupled. I'm also going to check in with Sol-Ark and see if the inverters respond to high battery voltage when they are in closed loop with the BMS on the battery. I've always assumed that the Sol-Ark's software just responds to the SOC from the BMS. <div>That would be a possible connection between the freq-watt function on the Sol-Ark and DC power from the solar array. I was really scratching my head on where the possible connection could be between incoming DC power and the freq-watt function on the Sol-Arks. <br><div><br clear="all"><div><div dir="ltr"><div dir="ltr"><div style="font-size:small;color:rgb(80,0,80)"><div><font face="georgia,
serif">Vince McClellan</font></div><div><font face="georgia, serif">Energy Design</font></div><div><font face="georgia, serif">NABCEP PV Installation Professional</font></div><div><font face="georgia, serif">p. <a href="tel:%28541%29%20485-8122" value="+15414858122" style="color:rgb(17,85,204);text-decoration:underline" target="_blank">(541) 485-8122</a> f. <a href="tel:%28541%29%20338-8202" value="+15413388202" style="color:rgb(17,85,204);text-decoration:underline" target="_blank">(541) 338-8202</a></font></div></div><div style="font-size:small;color:rgb(80,0,80)"><img src="https://docs.google.com/uc?export=download&id=1HcXK0FTsJsEFDvKv-POVulmqJD3Ikpz4&revid=0B2VUQDDTFCz_aVNUUUNDRkNRUCtjc1oyZ3JFY2NvNWlJVGpvPQ" height="79" width="420"><br></div><div style="font-size:small;color:rgb(80,0,80)"><span style="font-family:"arial narrow",sans-serif">If you have received this email and are not the intended recipient please delete this email. Copying, or using any part, content, or attachment of this email is strictly prohibited. </span></div></div></div></div><br></div></div></div><br><br><fieldset></fieldset><br><div>_______________________________________________<br>List sponsored by Redwood Alliance<br><br>Pay optional member dues here:<span> </span><a href="http://re-wrenches.org/" style="color:blue;text-decoration:underline" target="_blank">http://re-wrenches.org</a><br><br>List Address:<span> </span><a href="mailto:RE-wrenches@lists.re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank">RE-wrenches@lists.re-wrenches.org</a><br><br>Change listserver email address & settings:<br><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br><br>There are two list archives for searching. When one doesn't work, try the other:<br><a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" style="color:blue;text-decoration:underline" target="_blank">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a><br><a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br><br>List rules & etiquette:<br><a href="http://www.re-wrenches.org/etiquette.htm" style="color:blue;text-decoration:underline" target="_blank">http://www.re-wrenches.org/etiquette.htm</a><br><br>Check out or update participant bios:<br><a href="http://www.members.re-wrenches.org/" style="color:blue;text-decoration:underline" target="_blank">http://www.members.re-wrenches.org</a><br><br></div></div><div style="margin:30px 25px 10px"><div style="width:622px;border-top:2px solid rgba(146,154,163,0.7);padding-top:10px"><div style="display:inline-block;white-space:nowrap;vertical-align:middle;width:304.766px"><a href="mailto:pieter@offgridenterprises.org" style="padding-right:6px;font-weight:500;color:rgb(72,86,100);text-decoration:none" target="_blank">Pieter Huebner</a></div><span> </span> <div style="display:inline-block;white-space:nowrap;vertical-align:middle;width:298.547px;text-align:right"><font color="#909AA4"><span style="padding-left:6px">January 20, 2022 at 6:41 AM</span></font></div></div></div><div style="color:rgb(144,154,164);margin-left:24px;margin-right:24px"><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">Vince, Although you have an AC bussed connection, the issue may not be the opposite as ours. In Our case the battery buss voltage goes high when the solar array is enabled. If you are also experiencing DC buss excursions you can trigger frequency shifting. If you haven't already done so, I suggest that you closely monitor the battery voltage when the solar array is charging both with and without the Radian AC bussing connected.<u></u><u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">Pieter<u></u><u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span id="gmail-m_8090336887559327866cid:part6.46CB0331.351BFA76@villagepowerdesign.com"><image.png></span><u></u><u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><b>From:</b><span> </span>RE-wrenches<span> </span><a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank"><re-wrenches-bounces@lists.re-wrenches.org></a><span> </span><b>On Behalf Of<span> </span></b>Vince McClellan<br><b>Sent:</b><span> </span>Wednesday, January 19, 2022 11:16 PM<br><b>To:</b><span> </span>RE-wrenches<span> </span><a href="mailto:re-wrenches@lists.re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank"><re-wrenches@lists.re-wrenches.org></a><br><b>Subject:</b><span> </span>Re: [RE-wrenches] Sol-Ark AC Coupling Issues<u></u><u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">Thanks Pieter<u></u><u></u></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">We seem to have the opposite problem from what you are experiencing. Our freq-watt regulation of the Radian inverter by the Sol-Ark inverters seems to be actuated by the DC power from the solar array that is DC connected to the Sol-Ark inverters. It is supposed to be actuated by the SOC of the Blue Ion batteries, but that is inconsistent at best. We can turn the DC power from the solar array on on the master inverter, but when we try using the MPPT channels on the two other inverters it briefly actuates the freq-watt function of the Sol-Ark disconnecting the Radian inverter. <u></u><u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><br clear="all"><u></u><u></u></div><div><div><div><div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Georgia,serif;color:rgb(80,0,80)">Vince McClellan</span><span style="font-size:12pt;color:rgb(80,0,80)"><u></u><u></u></span></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Georgia,serif;color:rgb(80,0,80)">Energy Design</span><span style="font-size:12pt;color:rgb(80,0,80)"><u></u><u></u></span></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Georgia,serif;color:rgb(80,0,80)">NABCEP PV Installation Professional</span><span style="font-size:12pt;color:rgb(80,0,80)"><u></u><u></u></span></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Georgia,serif;color:rgb(80,0,80)">p. <a href="tel:%28541%29%20485-8122" style="color:blue;text-decoration:underline" target="_blank"><span style="color:rgb(17,85,204)">(541) 485-8122</span></a> f. <a href="tel:%28541%29%20338-8202" style="color:blue;text-decoration:underline" target="_blank"><span style="color:rgb(17,85,204)">(541) 338-8202</span></a></span><span style="font-size:12pt;color:rgb(80,0,80)"><u></u><u></u></span></div></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;color:rgb(80,0,80)"><img id="gmail-m_8090336887559327866_x0000_i1025" src="https://docs.google.com/uc?export=download&id=1HcXK0FTsJsEFDvKv-POVulmqJD3Ikpz4&revid=0B2VUQDDTFCz_aVNUUUNDRkNRUCtjc1oyZ3JFY2NvNWlJVGpvPQ" height="79" width="420" border="0" style="width: 4.375in; height: 0.8229in;"><u></u><u></u></span></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt">If you have received this email and are not the intended recipient please delete this email. Copying, or using any part, content, or attachment of this email is strictly prohibited. </span><span style="font-size:12pt;color:rgb(80,0,80)"><u></u><u></u></span></div></div></div></div></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div></div></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div><div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">On Wed, Jan 19, 2022 at 8:20 PM Pieter Huebner <<a href="mailto:pieter@offgridenterprises.org" style="color:blue;text-decoration:underline" target="_blank">pieter@offgridenterprises.org</a>> wrote:<u></u><u></u></div></div></div></div><br><fieldset></fieldset><br><div>_______________________________________________<br>List sponsored by Redwood Alliance<br><br>Pay optional member dues here:<span> </span><a href="http://re-wrenches.org/" style="color:blue;text-decoration:underline" target="_blank">http://re-wrenches.org</a><br><br>List Address:<span> </span><a href="mailto:RE-wrenches@lists.re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank">RE-wrenches@lists.re-wrenches.org</a><br><br>Change listserver email address & settings:<br><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br><br>There are two list archives for searching. When one doesn't work, try the other:<br><a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" style="color:blue;text-decoration:underline" target="_blank">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a><br><a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br><br>List rules & etiquette:<br><a href="http://www.re-wrenches.org/etiquette.htm" style="color:blue;text-decoration:underline" target="_blank">http://www.re-wrenches.org/etiquette.htm</a><br><br>Check out or update participant bios:<br><a href="http://www.members.re-wrenches.org/" style="color:blue;text-decoration:underline" target="_blank">http://www.members.re-wrenches.org</a><br><br></div></div><div style="margin:30px 25px 10px"><div style="width:622px;border-top:2px solid rgba(146,154,163,0.7);padding-top:10px"><div style="display:inline-block;white-space:nowrap;vertical-align:middle;width:304.766px"><a href="mailto:vince@solarenergydesign.com" style="padding-right:6px;font-weight:500;color:rgb(72,86,100);text-decoration:none" target="_blank">Vince McClellan</a></div><span> </span> <div style="display:inline-block;white-space:nowrap;vertical-align:middle;width:298.547px;text-align:right"><font color="#909AA4"><span style="padding-left:6px">January 19, 2022 at 9:15 PM</span></font></div></div></div><div style="color:rgb(144,154,164);margin-left:24px;margin-right:24px"><div dir="ltr">Thanks Pieter<div>We seem to have the opposite problem from what you are experiencing. Our freq-watt regulation of the Radian inverter by the Sol-Ark inverters seems to be actuated by the DC power from the solar array that is DC connected to the Sol-Ark inverters. It is supposed to be actuated by the SOC of the Blue Ion batteries, but that is inconsistent at best. We can turn the DC power from the solar array on on the master inverter, but when we try using the MPPT channels on the two other inverters it briefly actuates the freq-watt function of the Sol-Ark disconnecting the Radian inverter. </div><div><br clear="all"><div><div dir="ltr"><div dir="ltr"><div style="font-size:small;color:rgb(80,0,80)"><div><font face="georgia,
serif">Vince McClellan</font></div><div><font face="georgia, serif">Energy Design</font></div><div><font face="georgia, serif">NABCEP PV Installation Professional</font></div><div><font face="georgia, serif">p. <a href="tel:%28541%29%20485-8122" value="+15414858122" style="color:rgb(17,85,204);text-decoration:underline" target="_blank">(541) 485-8122</a> f. <a href="tel:%28541%29%20338-8202" value="+15413388202" style="color:rgb(17,85,204);text-decoration:underline" target="_blank">(541) 338-8202</a></font></div></div><div style="font-size:small;color:rgb(80,0,80)"><img src="https://docs.google.com/uc?export=download&id=1HcXK0FTsJsEFDvKv-POVulmqJD3Ikpz4&revid=0B2VUQDDTFCz_aVNUUUNDRkNRUCtjc1oyZ3JFY2NvNWlJVGpvPQ" height="79" width="420"><br></div><div style="font-size:small;color:rgb(80,0,80)"><span style="font-family:"arial narrow",sans-serif">If you have received this email and are not the intended recipient please delete this email. Copying, or using any part, content, or attachment of this email is strictly prohibited. </span></div></div></div></div><br></div></div><br><br><fieldset></fieldset><br><div>_______________________________________________<br>List sponsored by Redwood Alliance<br><br>Pay optional member dues here:<span> </span><a href="http://re-wrenches.org/" style="color:blue;text-decoration:underline" target="_blank">http://re-wrenches.org</a><br><br>List Address:<span> </span><a href="mailto:RE-wrenches@lists.re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank">RE-wrenches@lists.re-wrenches.org</a><br><br>Change listserver email address & settings:<br><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br><br>There are two list archives for searching. When one doesn't work, try the other:<br><a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" style="color:blue;text-decoration:underline" target="_blank">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a><br><a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br><br>List rules & etiquette:<br><a href="http://www.re-wrenches.org/etiquette.htm" style="color:blue;text-decoration:underline" target="_blank">http://www.re-wrenches.org/etiquette.htm</a><br><br>Check out or update participant bios:<br><a href="http://www.members.re-wrenches.org/" style="color:blue;text-decoration:underline" target="_blank">http://www.members.re-wrenches.org</a><br><br></div></div><div style="margin:30px 25px 10px"><div style="width:622px;border-top:2px solid rgba(146,154,163,0.7);padding-top:10px"><div style="display:inline-block;white-space:nowrap;vertical-align:middle;width:304.766px"><a href="mailto:pieter@offgridenterprises.org" style="padding-right:6px;font-weight:500;color:rgb(72,86,100);text-decoration:none" target="_blank">Pieter Huebner</a></div><span> </span> <div style="display:inline-block;white-space:nowrap;vertical-align:middle;width:298.547px;text-align:right"><font color="#909AA4"><span style="padding-left:6px">January 19, 2022 at 8:20 PM</span></font></div></div></div><div style="color:rgb(144,154,164);margin-left:24px;margin-right:24px"><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">Vince, For what it is worth:<u></u><u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">We have also been working on similar issues when using multiple Solark inverters connected in parallel. The issue has been that parallel Solark inverters don't seem to be able to properly regulate the battery charge voltage. Although Solark technical support has been outstanding, and with their help we have diminished the severity but not solved the issue. For the sites that we currently have deployed for the interim we had to resort to turning down the charge voltage set points in order to protect the Lithium batteries. and avoid BMS shutdowns. We have a client with an existing outback system and were planning to expand the existing system using AC bussed Solark 12K inverters with additional battery and solar capacity (the site is 100% off grid, and has evolved into a micro grid), but are now going a different direction. Although we have not yet attempted an AC bussed Solark system, I suspect that the issues you are having are related to the battery voltage regulation problem we have experienced.<u></u><u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">Pieter<u></u><u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span id="gmail-m_8090336887559327866cid:part6.46CB0331.351BFA76@villagepowerdesign.com"><image.png></span><u></u><u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><b>From:</b><span> </span>RE-wrenches<span> </span><a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank"><re-wrenches-bounces@lists.re-wrenches.org></a><span> </span><b>On Behalf Of<span> </span></b>Vince McClellan<br><b>Sent:</b><span> </span>Wednesday, January 19, 2022 5:16 PM<br><b>To:</b><span> </span>RE-wrenches<span> </span><a href="mailto:RE-wrenches@lists.re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank"><RE-wrenches@lists.re-wrenches.org></a><br><b>Subject:</b><span> </span>[RE-wrenches] Sol-Ark AC Coupling Issues<u></u><u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div><div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">Is anyone on the list familiar with AC coupling Sol-Ark inverters?<u></u><u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"> <u></u><u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">We haven't been able to AC couple an existing Outback Radian system to a new system that we built with 3, Sol-Ark 12K inverters and 3, Blue Ion batteries. Each time we have tested the system the Sol-Ark inverters accept the power from the Radian inverter until we turn on the DC power from the new solar array to the Sol-Ark inverters. As soon as there is significant DC power coming from the solar array the Sol-Ark inverters freq-watt turns on for a brief second and disconnects the Radian inverter even when the Blue Ion batteries are below the programmed state of charge threshold. If we don't turn on the DC power from the new solar array the Radian will connect and stay connected. <u></u><u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">We have been working with Sol-Ark for several months now to get this system to accept the incoming power from the Radian without freq-watt kicking in on the Sol-Ark inverters and disconnecting the Radian inverter. Sol-Ark has sent two software revisions to the Sol-Ark inverters and we are still experiencing the same problem. <u></u><u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">Can anyone think of what we might be missing and where to direct our troubleshooting efforts next? <u></u><u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">Thanks, <u></u><u></u></div></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><br clear="all"><u></u><u></u></div><div><div><div><div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Georgia,serif;color:rgb(80,0,80)">Vince McClellan</span><span style="font-size:12pt;color:rgb(80,0,80)"><u></u><u></u></span></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Georgia,serif;color:rgb(80,0,80)">Energy Design</span><span style="font-size:12pt;color:rgb(80,0,80)"><u></u><u></u></span></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Georgia,serif;color:rgb(80,0,80)">NABCEP PV Installation Professional</span><span style="font-size:12pt;color:rgb(80,0,80)"><u></u><u></u></span></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Georgia,serif;color:rgb(80,0,80)">p. <a href="tel:%28541%29%20485-8122" style="color:blue;text-decoration:underline" target="_blank"><span style="color:rgb(17,85,204)">(541) 485-8122</span></a> f. <a href="tel:%28541%29%20338-8202" style="color:blue;text-decoration:underline" target="_blank"><span style="color:rgb(17,85,204)">(541) 338-8202</span></a></span><span style="font-size:12pt;color:rgb(80,0,80)"><u></u><u></u></span></div></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;color:rgb(80,0,80)"><img id="gmail-m_8090336887559327866_x0000_i1025" src="https://docs.google.com/uc?export=download&id=1HcXK0FTsJsEFDvKv-POVulmqJD3Ikpz4&revid=0B2VUQDDTFCz_aVNUUUNDRkNRUCtjc1oyZ3JFY2NvNWlJVGpvPQ" height="79" width="420" border="0" style="width: 4.375in; height: 0.8229in;"><u></u><u></u></span></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt">If you have received this email and are not the intended recipient please delete this email. Copying, or using any part, content, or attachment of this email is strictly prohibited. </span><span style="font-size:12pt;color:rgb(80,0,80)"><u></u><u></u></span></div></div></div></div></div></div></div><br><fieldset></fieldset><br><div>_______________________________________________<br>List sponsored by Redwood Alliance<br><br>Pay optional member dues here:<span> </span><a href="http://re-wrenches.org/" style="color:blue;text-decoration:underline" target="_blank">http://re-wrenches.org</a><br><br>List Address:<span> </span><a href="mailto:RE-wrenches@lists.re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank">RE-wrenches@lists.re-wrenches.org</a><br><br>Change listserver email address & settings:<br><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br><br>There are two list archives for searching. When one doesn't work, try the other:<br><a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" style="color:blue;text-decoration:underline" target="_blank">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a><br><a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br><br>List rules & etiquette:<br><a href="http://www.re-wrenches.org/etiquette.htm" style="color:blue;text-decoration:underline" target="_blank">http://www.re-wrenches.org/etiquette.htm</a><br><br>Check out or update participant bios:<br><a href="http://www.members.re-wrenches.org/" style="color:blue;text-decoration:underline" target="_blank">http://www.members.re-wrenches.org</a><br><br></div></div><div style="margin:30px 25px 10px"><div style="width:622px;border-top:2px solid rgba(146,154,163,0.7);padding-top:10px"><div style="display:inline-block;white-space:nowrap;vertical-align:middle;width:304.766px"><a href="mailto:vince@solarenergydesign.com" style="padding-right:6px;font-weight:500;color:rgb(72,86,100);text-decoration:none" target="_blank">Vince McClellan</a></div><span> </span> <div style="display:inline-block;white-space:nowrap;vertical-align:middle;width:298.547px;text-align:right"><font color="#909AA4"><span style="padding-left:6px">January 19, 2022 at 3:15 PM</span></font></div></div></div><div style="color:rgb(144,154,164);margin-left:24px;margin-right:24px"><div dir="ltr"><div>Is anyone on the list familiar with AC coupling Sol-Ark inverters?</div><div> </div><div>We haven't been able to AC couple an existing Outback Radian system to a new system that we built with 3, Sol-Ark 12K inverters and 3, Blue Ion batteries. Each time we have tested the system the Sol-Ark inverters accept the power from the Radian inverter until we turn on the DC power from the new solar array to the Sol-Ark inverters. As soon as there is significant DC power coming from the solar array the Sol-Ark inverters freq-watt turns on for a brief second and disconnects the Radian inverter even when the Blue Ion batteries are below the programmed state of charge threshold. If we don't turn on the DC power from the new solar array the Radian will connect and stay connected. </div><div><br></div><div>We have been working with Sol-Ark for several months now to get this system to accept the incoming power from the Radian without freq-watt kicking in on the Sol-Ark inverters and disconnecting the Radian inverter. Sol-Ark has sent two software revisions to the Sol-Ark inverters and we are still experiencing the same problem. </div><div><br></div><div>Can anyone think of what we might be missing and where to direct our troubleshooting efforts next? </div><div><br></div><div>Thanks, </div><br clear="all"><div><div dir="ltr"><div dir="ltr"><div style="font-size:small;color:rgb(80,0,80)"><div><font face="georgia,
serif">Vince McClellan</font></div><div><font face="georgia, serif">Energy Design</font></div><div><font face="georgia, serif">NABCEP PV Installation Professional</font></div><div><font face="georgia, serif">p. <a href="tel:%28541%29%20485-8122" value="+15414858122" style="color:rgb(17,85,204);text-decoration:underline" target="_blank">(541) 485-8122</a> f. <a href="tel:%28541%29%20338-8202" value="+15413388202" style="color:rgb(17,85,204);text-decoration:underline" target="_blank">(541) 338-8202</a></font></div></div><div style="font-size:small;color:rgb(80,0,80)"><img src="https://docs.google.com/uc?export=download&id=1HcXK0FTsJsEFDvKv-POVulmqJD3Ikpz4&revid=0B2VUQDDTFCz_aVNUUUNDRkNRUCtjc1oyZ3JFY2NvNWlJVGpvPQ" height="79" width="420"><br></div><div style="font-size:small;color:rgb(80,0,80)"><span style="font-family:"arial narrow",sans-serif">If you have received this email and are not the intended recipient please delete this email. 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<span style="border-collapse:separate;color:rgb(0,0,0);font-family:Times;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-variant-east-asian:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;border-spacing:0px"><div style="overflow-wrap: break-word;"><div><blockquote type="cite"><div style="overflow-wrap: break-word;"><div><span style="border-collapse:separate;font-family:Times;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-variant-east-asian:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;border-spacing:0px"><span style="border-collapse:separate;font-family:Times;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-variant-east-asian:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;border-spacing:0px"><div style="overflow-wrap: break-word;"><span style="font-family:"Times New Roman";font-size:12px"><b><a>Tump</a><a href="mailto:3391@gmail.com" target="_blank">3391@gmail.com</a></b> <a><b>www.SWNL.net</b></a></span><span style="border-collapse:separate;font-family:Helvetica;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-variant-east-asian:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;border-spacing:0px"><div style="overflow-wrap: break-word;"><span style="border-collapse:separate;font-family:Helvetica;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-variant-east-asian:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;border-spacing:0px"><div style="overflow-wrap: break-word;"><div><div style="margin:0px;font-style:normal;font-variant-caps:normal;font-weight:normal;font-size:12px;line-height:normal;font-family:"Times New Roman""> <span style="font-weight:normal;color:rgb(45,44,250)"> </span><span style="font-style:normal;font-variant-caps:normal;font-weight:normal;font-size:18px;line-height:normal;font-family:"Times New Roman";color:rgb(45,44,250)">Solarwinds Northernlights</span> <b style="font-weight:normal"><i> </i></b></div><div style="margin:0px;font-style:normal;font-variant-caps:normal;font-weight:normal;font-size:10px;line-height:normal;font-family:"Times New Roman""><span style="font-style:normal;font-variant-caps:normal;font-weight:normal;font-size:12px;line-height:normal;font-family:"Times New Roman""><b><i> Serving Mid Coast Maine & Northern California</i></b></span><span style="font-style:normal;font-variant-caps:normal;font-weight:normal;font-size:10px;line-height:normal;font-family:Arial"><b><i><br></i></b></span><b><i> 207-832-7574 Cl. 610-517-8401 </i></b></div><div style="margin:0px;font-style:normal;font-variant-caps:normal;font-weight:normal;font-size:12px;line-height:normal;font-family:"Times New Roman""><span style="color:rgb(45,44,250)"><b><i> </i></b></span><b><i>Blair "TUMP" May</i></b></div><p style="margin:5px 0px;font-style:normal;font-variant-caps:normal;font-weight:normal;font-size:12px;line-height:normal;font-family:"Times New Roman";color:rgb(0,144,25)"><span style="color:rgb(0,0,0)"><b><i> ******** MAINE'S CHARTER ********<br> </i></b></span><b><i> </i></b><span style="text-decoration:underline"><b><i> NABCEP "Certified PV Installer"</i></b></span><span style="text-decoration:underline;color:rgb(0,0,0)"><b><i> <br></i></b></span><span style="color:rgb(0,0,0)"><b><i> <br> ******** MAINE'S CHARTER ********<br> </i></b></span><span style="text-decoration:underline"><b><i> Trace Xantrex "Certified" Dealer / Installer"</i></b></span></p><div style="margin:0px;font-style:normal;font-variant-caps:normal;font-weight:normal;font-size:12px;line-height:normal;font-family:"Times New Roman";min-height:15px"><br></div></div></div></span></div></span></div></span></span></div></div></blockquote></div></div></span><br><br>
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