<br><font size=2 face="sans-serif">Hi Mark, Gary,</font>
<br>
<br><font size=2 face="sans-serif">The Xantrex XW series inverters will
do a frequency shift to cause most models of grid-tied inverter to
disconnect when the batteries are full, while the system is operating in
an ac coupled off-grid mode. The following app-note describes this operation.</font>
<br>
<br><font size=2 face="sans-serif">Cheers,</font>
<br>
<br><font size=2 face="sans-serif">Mark</font>
<br>
<br><a href="http://www.global-download.schneider-electric.com/852577A4005D7372/all/8FA29D94B918A0FB8525781F0072FCA7/$File/ac-coupling-app-note(976-0240-01-01_rev-a).pdf"><font size=2 face="sans-serif">http://www.global-download.schneider-electric.com/852577A4005D7372/all/8FA29D94B918A0FB8525781F0072FCA7/$File/ac-coupling-app-note(976-0240-01-01_rev-a).pdf</font></a><font size=2 face="sans-serif"><br>
</font><font size=3 color=#008000>_____________________________________________________________________________________</font><font size=3>
<br>
</font><font size=1 face="Arial"><b><br>
Mark Edmunds, P.Eng.</b> | </font><font size=1 color=#008000 face="Arial"><b>
Schneider Electric </b></font><font size=1 face="Arial"><b> | Renewable
Energies Business</b> | <b>CANADA</b> | <b>Director
- Advanced Engineering</b> <b><br>
Phone:</b> +1-604-422-2609 | <b>Fax:</b> +1-604-420-1591 |
<b>Mobile:</b> +1-604-613-3285 <b><br>
Email:</b> </font><a href="mailto:mark.edmunds@schneider-electric.com"><font size=1 color=blue face="Arial"><u>mark.edmunds@schneider-electric.com</u></font></a><font size=1 face="Arial">
| <b>Site:</b></font><a href=http:/// target=_blank><font size=1 color=blue face="Arial"><u>
www.schneider-electric.com/renewable-energies </u></font></a><font size=1 face="Arial">
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<br>
<table width=100%>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">From:</font>
<td><font size=1 face="sans-serif">"Mark Frye" <markf@berkeleysolar.com></font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">To:</font>
<td><font size=1 face="sans-serif"><Gary@IcarusSolarServices.com>,
"'RE-wrenches'" <re-wrenches@lists.re-wrenches.org></font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Date:</font>
<td><font size=1 face="sans-serif">04/12/2011 09:37 PM</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Subject:</font>
<td><font size=1 face="sans-serif">Re: [RE-wrenches] AC Coupling Fronius
IG Plus 10.0 inverter</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Sent by:</font>
<td><font size=1 face="sans-serif">re-wrenches-bounces@lists.re-wrenches.org</font></table>
<br>
<hr noshade>
<br>
<br>
<br><font size=2 color=blue face="Arial">Gary,</font>
<br><font size=3> </font>
<br><font size=2 color=blue face="Arial">I have been looking at some AC
coupled stuff lately. The "FSC" is propriatary to SMA, Sunny
Island to Sunny Boy. Pretty much anything else you need something
to sense the voltage of the battery bank so you can open a contactor on
the AC line to the Fronius when the battery voltage gets too high. Once
the voltage drops the contactor can close and bring the Fronius back on
line and then the 5-minute start up delay before it is feeding the line
again.</font>
<br><font size=2 face="Arial"><br>
Mark Frye</font><font size=3> </font><font size=2 face="Arial"><br>
Berkeley Solar Electric Systems</font><font size=3> </font><font size=2 face="Arial"><br>
303 Redbud Way</font><font size=3> </font><font size=2 face="Arial"><br>
Nevada City, CA 95959</font><font size=3> </font><font size=2 face="Arial"><br>
(530) 401-8024</font><font size=3> </font><font size=3 color=blue><u><br>
</u></font><a href=http://www.berkeleysolar.com/><font size=2 color=blue face="Arial"><u>www.berkeleysolar.com</u></font></a><font size=2 face="Arial">
</font><font size=3> </font>
<br><font size=3> </font>
<br>
<br>
<hr><font size=2 face="Tahoma"><b>From:</b> re-wrenches-bounces@lists.re-wrenches.org
[</font><a href="mailto:re-wrenches-bounces@lists.re-wrenches.org"><font size=2 face="Tahoma">mailto:re-wrenches-bounces@lists.re-wrenches.org</font></a><font size=2 face="Tahoma">]
<b>On Behalf Of </b>Gary Willett<b><br>
Sent:</b> Tuesday, April 12, 2011 8:35 PM<b><br>
To:</b> re-wrenches@lists.re-wrenches.org<b><br>
Subject:</b> [RE-wrenches] AC Coupling Fronius IG Plus 10.0 inverter</font><font size=3><br>
</font>
<br><font size=4>Working on a proposal to add battery backup and a generator
to an existing 10kW grid-tie system using the Fronius IG Plus 10.0 inverter.<br>
<br>
Does anyone have any experience AC coupling this inverter to a Sunny Island
5048, or a Xantrex 6048? Is the Fronius capable of Frequency Shift control
(FSC) that comes from the battery-connected inverter?<br>
<br>
Any other suggested solutions is appreciated.</font>
<br>
<br><font size=2 face="Calibri">Gary Willett, PE<br>
Icarus Solar Services LLC</font><font size=2 color=blue face="Calibri"><u><br>
</u></font><a href=mailto:Gary@IcarusSolarServices.com></a>
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