<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
p.msonormal0, li.msonormal0, div.msonormal0
{mso-style-name:msonormal;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.EmailStyle19
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Might want to confirm that the FNDC Relay is off and just the AGS relay is set from the Mate menu.<br><br>Seems I went through this one time before and excellent Outback support quickly surmised the issue for me.<br><br>Scot Arey<br>Solar CenTex<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>From:</b> RE-wrenches <re-wrenches-bounces@lists.re-wrenches.org> <b>On Behalf Of </b>Mac Lewis<br><b>Sent:</b> Friday, April 19, 2019 12:27 PM<br><b>To:</b> RE-wrenches <re-wrenches@lists.re-wrenches.org><br><b>Subject:</b> [RE-wrenches] Operating Voltages Outback RE High Capacity Battery<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Hello Wrenches,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>We recently inherited an Outback system that I've been keeping an eye on via Optics. Its a dual stack 3648 VFXR, with about 4kW of PV with a single string of EnergyCell 1100RE battery bank (reported to be ~6 months old) ~.46 kWh at C20.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I have been observing how the system functions and how the voltage behaves. We keep getting 2 minute voltage starts on the generator in the middle of the night that don't seem necessary judging from how much energy has been used from the battery bank. I am hesitant to tweak anything because these battery set-points are a bit different than I'm used to.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>As per Outback:<o:p></o:p></p></div><div><p class=MsoNormal>Absorb Voltage is 55.6V for 2 hours<o:p></o:p></p></div><div><p class=MsoNormal>Float Voltage is 54.0V<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I've slowly been dropping the 2 minute start voltage to see if there is a bottom, but I'm hesitant to take it much lower (maybe I should). <o:p></o:p></p></div><div><p class=MsoNormal>2 minute start voltage: 44.8 V.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>The system easily charges the battery bank to 100% (and easily reached the 2 hr absorb time) every day. The flexnet DC is correctly set up and calibrated.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>The load on the system is pretty consistent. They use between 400 and 600W throughout the night.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>An average night, they may use about 6 kWh before the voltage sags below the 2 minute start voltage and it starts the generator.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Just curious if our 2 minute voltage needs to be dropped or if these batteries are degraded. What corrective changes can I make to get better performance?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I have and will call Outback about this, but I'd like other perspectives as well.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Thanks as always for your expertise<br clear=all><o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- <o:p></o:p></p><div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>Mac Lewis<b><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#FF9900'><o:p></o:p></span></b></p><p><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#305A78'>"Yo solo sé que no sé nada." </span><b><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#686868'>-Sócrates</span></b><b><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#FF9900'><o:p></o:p></span></b></p></div></div></div></div></body></html>