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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>I am looking for a recommendation for Max Voltage, and how often to attain this bulk voltage? For the following system: <o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l3 level1 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>Trojan 8D AGM battery bank (4 bats for 11kWh rated storage with 900 Watts of PV)<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l3 level1 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>Home was previously off gird. <b>We upgraded it to a grid tied net metered system</b> using OutBack pre-wired FP1-3 (GVFX3524 with FM 80 etc.)<o:p></o:p></p><p class=MsoNormal>I know with wet cell L-16RE’s in a Radian grid back up application we were told to program an Equalization charge every 60 days which we can do with that Radian system.<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>Right now we have this system set up as follows: <o:p></o:p></p><p class=MsoNormal><b><span style='font-family:"Tahoma","sans-serif"'>FM 80 PV Charge Controller</span></b><span style='font-family:"Tahoma","sans-serif"'>: <o:p></o:p></span></p><ul style='margin-top:0in' type=disc><li class=MsoNormal style='mso-list:l4 level1 lfo3'><span style='font-family:"Tahoma","sans-serif"'>GT (Grid Tied enabled)<o:p></o:p></span></li><li class=MsoNormal style='mso-list:l4 level1 lfo3'><span style='font-family:"Tahoma","sans-serif"'>Absorb 28.6 V<o:p></o:p></span></li><li class=MsoNormal style='mso-list:l4 level1 lfo3'><span style='font-family:"Tahoma","sans-serif"'>Absorb time 4 hrs<o:p></o:p></span></li><li class=MsoNormal style='mso-list:l4 level1 lfo3'><span style='font-family:"Tahoma","sans-serif"'>Float 27.0 V<o:p></o:p></span></li><li class=MsoNormal style='mso-list:l4 level1 lfo3'><span style='font-family:"Tahoma","sans-serif"'>End Amps 0 (originally had set at 9A but OutBack senior tech support person Katee Wood helped us understand the need for -0- when trying to sell)<o:p></o:p></span></li></ul><p class=MsoNormal style='margin-left:.5in'><span style='font-size:8.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-family:"Tahoma","sans-serif"'>Flex Net DC set to</span></b><span style='font-family:"Tahoma","sans-serif"'>: Firmware REV 001.001.071</span><span style='font-size:12.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><ul style='margin-top:0in' type=disc><li class=MsoNormal style='mso-list:l2 level1 lfo4'><span style='font-family:"Tahoma","sans-serif"'>Battery Voltage 28.0<o:p></o:p></span></li><li class=MsoNormal style='mso-list:l2 level1 lfo4'><span style='font-family:"Tahoma","sans-serif"'>Return Amps 9.2<o:p></o:p></span></li><li class=MsoNormal style='mso-list:l2 level1 lfo4'><span style='font-family:"Tahoma","sans-serif"'>Parameters met 1 minute<o:p></o:p></span></li><li class=MsoNormal style='mso-list:l2 level1 lfo4'><span style='font-family:"Tahoma","sans-serif"'>94% charge efficiency<o:p></o:p></span></li></ul><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-family:"Tahoma","sans-serif"'>Mate 2 controller settings: REV 4.2.1</span></b><b><span style='font-size:12.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></b></p><ul style='margin-top:0in' type=disc><li class=MsoNormal style='mso-list:l5 level1 lfo5'><span style='font-family:"Tahoma","sans-serif"'>AC input USE<o:p></o:p></span></li><li class=MsoNormal style='mso-list:l5 level1 lfo5'><span style='font-family:"Tahoma","sans-serif"'>RE-Float 25.0<o:p></o:p></span></li><li class=MsoNormal style='mso-list:l5 level1 lfo5'><span style='font-family:"Tahoma","sans-serif"'>Absorb 28.2V<o:p></o:p></span></li><li class=MsoNormal style='mso-list:l5 level1 lfo5'><span style='font-family:"Tahoma","sans-serif"'>Absorb time 0.1<o:p></o:p></span></li><li class=MsoNormal style='mso-list:l5 level1 lfo5'><span style='font-family:"Tahoma","sans-serif"'>Float 27.0<o:p></o:p></span></li><li class=MsoNormal style='mso-list:l5 level1 lfo5'><span style='font-family:"Tahoma","sans-serif"'>Float time 0<o:p></o:p></span></li><li class=MsoNormal style='mso-list:l5 level1 lfo5'><span style='font-family:"Tahoma","sans-serif"'>Sell RE Voltage 25.6 <o:p></o:p></span></li><li class=MsoNormal style='mso-list:l5 level1 lfo5'><span style='font-family:"Tahoma","sans-serif"'>GT Authority Grid Tie<o:p></o:p></span></li><li class=MsoNormal style='mso-list:l5 level1 lfo5'><span style='font-family:"Tahoma","sans-serif"'>Re-bulk 24.0V <o:p></o:p></span></li></ul><p class=MsoNormal><span style='font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Tahoma","sans-serif"'>After some learning curve selling problems it has now been selling very well for the past two weeks. But the state of charge is now down to 70% on the Flex Net (I don’t know the accuracy of this as Katee had us disable the FN DC Advanced Grid Tie Authority feature in the interest of much better selling performance) and the MAX Voltage has only reached 26.4. The MIN Voltage is 25.5. They typically are sitting at 25.9 to 26.2 Volts.<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Tahoma","sans-serif"'>This customer, having been a good caretaker of wet cell LA’s for 15 years is concerned that we get the settings as good as is possible for efficient selling but also to foster as long a battery life as is possible.<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Tahoma","sans-serif"'>What is the best way to reach an occasional high voltage of say 28.4 (if that is our target). Is this programmable automatically with this OutBack setup or do we need to trigger a bulk charge manually?<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo6'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-family:"Tahoma","sans-serif"'>If so. What is the easiest, and or best way, to trigger the bulk charge?<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Tahoma","sans-serif"'>Thanks,<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Tahoma","sans-serif"'>Dave<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><b>David Palumbo<o:p></o:p></b></p><p class=MsoNormal>Independent Power LLC <o:p></o:p></p><p class=MsoNormal>462 Solar Way Drive<o:p></o:p></p><p class=MsoNormal>Hyde Park, VT 05655<b><o:p></o:p></b></p><p class=MsoNormal><b><i>www.independentpowerllc.com <o:p></o:p></i></b></p><p class=MsoNormal>NABCEP Certified PV Installer<o:p></o:p></p><p class=MsoNormal>Vermont Solar Partner<o:p></o:p></p><p class=MsoNormal>24 Years Experience, (802) 888-7194 <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>