<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">You can do it in one of several easy ways.<div><br></div><div>HPX mode on the Mate. High Battery transfer. When the battery voltage and/or SOC is above the setpoint drop the grid. When the battery voltage or state of charge goes below the setpoint pick up the grid. This case the Mate is doing the driving. </div><div><br></div><div>Also available is Grid Zero mode where the inserter decides to zero the loads based on battery voltage and AC amp load. Then you would set the ReBulk set point on the inverter charger to trigger charging the batteries instead of zero AC loads. </div><div><br></div><div>The third choice is to program something called FlexTime where you set the schedule of the AC input mode from grid tide to red zero or off grid, etc.</div><div><br></div><div>It’s the system is on OpticsRE, you can adjust the settings fine-tune to get the best performance out of those Northstar batteries.</div><div><br></div><div>I just decommissioned a 36 battery group of Northstar batteries after 13 years and most of them are still viable.</div><div><br></div><div>As a precaution, For AC coupling, I also install a high battery AUX port controlled relay that drops the AC coupling input circuit. </div><div><br id="lineBreakAtBeginningOfSignature"><div dir="ltr">Thank you,<div><br></div><div>Maverick</div><div><div id="AppleMailSignature" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px;"><div class="ApplePlainTextBody"><br></div><div class="ApplePlainTextBody">Maverick Brown<br>Off-Grid Solar Commander since 2006<br>Maverick Solar Enterprises, Inc.<br> • Solar Commander Remote Power<br> • SunFlow Systems Cathodic Protection <br>maverick@mavericksolar.com<br>512-460-9825</div><div><br></div></div></div><div><br></div></div><div dir="ltr"><br><blockquote type="cite">On Apr 23, 2024, at 3:36 PM, Dave Tedeyan via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="ltr">Hi All, <div><br></div><div>I have an AC coupled Radian that is used to back up certain loads when the grid is down. It is paired with the Northstar Blue (Outback) batteries. The system sits in float nearly all the time. During a recent grid outage, the batteries had less than half the capacity that I would have expected, and they are only about 3.5 years old with very few cycles on them. </div><div><br></div><div>I tried to talk to Outback about it, which seems to not be possible anymore. I did talk to Northstar, and they recommend not leaving the batteries in float all the time.</div><div><br></div><div>I am wondering if anyone knows of a way to force the Radian to automatically discharge the batteries to a certain voltage ideally once a week, but could do daily. Essentially, I would like to utilize a time of use schedule where I can force the radian to not use the grid and just use the battery to power the loads for a little while. Ideally this would be automatic, and not require the customer to go through the grid breaker every once in a while. It seems that from the manual, I need to keep the Radian in Grid Tie mode in order for it to be able to sell excess PV back to the grid. Any ideas?</div><div><br></div><div>Thanks!<br>-Dave<br clear="all"><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"></div></div></div></div><div dir="ltr"><table cellpadding="0" cellspacing="0" style="border-spacing:0px;border-collapse:collapse;color:rgb(68,68,68);width:525px;font-size:11pt;font-family:Arial,sans-serif"><tbody><tr><td width="125" valign="top" rowspan="6" style="font-family:Arial,sans-serif;padding:0px 10px 0px 0px;font-size:10pt;border-right:1px solid rgb(236,189,0);width:125px;vertical-align:top"><a href="https://www.sungineersolar.com/" style="color:rgb(51,122,183);background-color:transparent" target="_blank"><img border="0" alt="Logo" width="105" src="https://sungineersolar.com/wp-content/uploads/2019/08/Logo-Image-Only-1.png" style="border:0px;vertical-align:middle;width:105px;height:auto" data-unique-identifier=""></a></td><td style="padding:0px 0px 0px 10px"><table cellpadding="0" cellspacing="0" style="border-spacing:0px;border-collapse:collapse;background-color:transparent"><tbody><tr><td valign="top" style="font-family:Arial,sans-serif;padding:0px 0px 5px 10px;width:400px;vertical-align:top"><span style="color:rgb(236,189,0);font-size:11pt;font-weight:700">Dave Tedeyan, P.E.<br></span><span style="font-size:11pt;font-weight:700"><font color="#ecbd00">Owner | Sungineer Solar</font><br></span></td></tr><tr><td valign="top" style="font-family:Arial,sans-serif;padding:5px 0px 5px 10px;font-size:10pt;vertical-align:top;line-height:17px"><span style="color:rgb(236,189,0)"><span style="font-weight:700">p: </span></span><span style="font-size:13.3333px"><span style="font-size:10pt;color:rgb(0,0,0)">he | him | his</span></span><span style="color:rgb(236,189,0)"><span style="font-weight:700"><br>a: </span></span><span style="font-size:10pt;color:rgb(0,0,0)">1653 Slaterville Rd.</span> <span style="font-size:10pt;color:rgb(0,0,0)">| Ithaca, NY 14850</span><br><span style="color:rgb(236,189,0)"><span style="font-weight:700">w:</span></span><a href="http://www.sungineersolar.com/" rel="noopener" style="color:rgb(51,122,183);background-color:transparent" target="_blank"><span style="font-size:10pt;color:rgb(0,0,0)"> www.sungineersolar.com</span></a><br><span style="color:rgb(236,189,0)"><span style="font-weight:700">c:</span></span><span style="font-size:10pt;color:rgb(0,0,0)"> (607) 270-0370</span></td></tr></tbody></table></td></tr></tbody></table></div></div></div></div></div></div>
<span>_______________________________________________</span><br><span>List sponsored by Redwood Alliance</span><br><span></span><br><span>Pay optional member dues here: http://re-wrenches.org</span><br><span></span><br><span>List Address: RE-wrenches@lists.re-wrenches.org</span><br><span></span><br><span>Change listserver email address & settings:</span><br><span>http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</span><br><span></span><br><span>There are two list archives for searching. When one doesn't work, try the other:</span><br><span>https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</span><br><span>http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</span><br><span></span><br><span>List rules & etiquette:</span><br><span>http://www.re-wrenches.org/etiquette.htm</span><br><span></span><br><span>Check out or update participant bios:</span><br><span>http://www.members.re-wrenches.org</span><br><span></span><br></div></blockquote></div></body></html>