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<DIV><SPAN class=031213020-23032009><FONT color=#0000ff>I have a XW6048 working
w/ a SMA + a xantrex suntie. I did have issues that required me to install the
SMA breaker at the top of the buss bar.I'll see if it will work with a
Enphase</FONT></SPAN></DIV>
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<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma>-----Original Message-----<BR><B>From:</B>
re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <B>On Behalf Of
</B>I2P@aol.com<BR><B>Sent:</B> Monday, March 23, 2009 3:57 PM<BR><B>To:</B>
re-wrenches@lists.re-wrenches.org; mdargatz@enphaseenergy.com<BR><B>Cc:</B>
OFLN@aol.com; I2P@aol.com<BR><B>Subject:</B> [RE-wrenches] AC coupling-mix and
match<BR><BR></FONT></DIV><FONT id=role_document face=Arial color=#000000>
<DIV>Wrenches,</DIV>
<DIV> </DIV>
<DIV>I have been doing some experimenting --testing compatibility between
brands of grid tie inverters and sign wave battery type inverters. I am hoping
some of you also have some experience here and we can compare
results.</DIV>
<DIV> </DIV>
<DIV>My interest is fueled by my belief that AC coupling is the ideal way to
increase system capacity for battery based off grid systems. The primary
benefit is higher system efficiency for AC loads used during the day. I
realize that power management becomes important but my interest right now is
just to find out who talks to who. My ultimate "power management" tool will be
an electric vehicle. Charging it will undoubtedly suck up available
juice.</DIV>
<DIV> </DIV>
<DIV>So far:</DIV>
<DIV> </DIV>
<DIV>SMA synchronizes to Xantrex SW (have not tested the XW yet) and Outback
and of course the SMA Sunny Island</DIV>
<DIV> </DIV>
<DIV>Xantrex GT also syncs to the SW</DIV>
<DIV> </DIV>
<DIV>I started this project with Enphase as my first choice since their system
is so scaleable. I have been unable to make Enphase sync. Marv at Enphase has
been very helpful but to date no results. I have, at Marv's
suggestion ,used capacitors to clean the somewhat hashy SW output without
results. Marv tells me he is testing Enphase and Outback. Does anyone have
experience syncing Enphase to other offgrid inverters?</DIV>
<DIV> </DIV>
<DIV>Any experiences with Fronius and others.? </DIV>
<DIV> </DIV>
<DIV>Though the SW output is not the cleanest, the results with SB and GT are
very stable. They hookup early AM and its steady green light all day
long. Though I use microwave, start induction motors etc, and my scope clearly
shows lots of spikes during these events, the GT and SB hang in.</DIV>
<DIV> </DIV>
<DIV>What are the experiences from others regarding mix and match?.
Interoperability among brands seems to be a very desirable goal to this
wrench.</DIV>
<DIV> </DIV>
<DIV>Don Loweburg</DIV>
<DIV>Offline Solar, Inc</DIV></FONT><BR><FONT
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