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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hello Wrenches,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>On the heels of the previous thread:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>We just got finished installing a system
that utilizes an Outback Quad stack and a 5.2kW array coupled to the AC panel
via a Fronius IG5100--due to a long home-run. The VFX’s are wired
into the home in their traditional manner, providing the “grid” for
the Fronius. As the solar comes in, excess power not used in the home
back feeds the batteries through the VFX’s. I have a series of
relays operating dump loads and finally a power cut-off for when the batteries
reach critical level. We installed the system yesterday and turned it on
for a test run (then back off to power it up in 2009 for the
ITC’s)—it worked great!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I have a couple questions for you all:<o:p></o:p></span></font></p>
<ul style='margin-top:0in' type=disc>
<li class=MsoNormal style='color:navy;mso-list:l0 level1 lfo1'><font size=2
color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial'>Seems
how we are back feeding the inverters and forfeiting their charge control,
where would you set the dump loads to kick on?</span></font> <font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></li>
<ul style='margin-top:0in' type=circle>
<li class=MsoNormal style='color:navy;mso-list:l0 level2 lfo1'><font size=2
color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial'>For
now I have them set at: 1<sup>st</sup> load to kick on at float voltages,
2<sup>nd</sup> to kick on at bulk voltages and 3<sup>rd</sup> to kick the
solar power off at the EQ voltages. Does this make sense? The
bank is made up of Rolls 4ks-25ps batteries.</span></font> <font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></li>
</ul>
<li class=MsoNormal style='color:navy;mso-list:l0 level1 lfo1'><font size=2
color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial'>Following
a recent discussion on the Wrenches list with a similar system: Do I
need to worry about back feeding the generator if it is runnin in the
morning when the sun comes up? Do I need a relay that will shut it
down when solar comes on line?</span></font> <font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></li>
<li class=MsoNormal style='color:navy;mso-list:l0 level1 lfo1'><font size=2
color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial'>I plan
on setting the Absorb and Float set times to a miimum. Would you
recommend this?</span></font> <font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></li>
</ul>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks for your input!<o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=2 color=navy face="Comic Sans MS"><span
style='font-size:10.0pt;font-family:"Comic Sans MS";color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face="Comic Sans MS"><span
style='font-size:10.0pt;font-family:"Comic Sans MS";color:navy'>Mark Dickson</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face="Comic Sans MS"><span
style='font-size:10.0pt;font-family:"Comic Sans MS";color:navy'>Oasis Montana
Inc.</span></font><font color=navy><span style='color:navy'><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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