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<DIV><SPAN class=203543823-25032009><FONT face=Arial color=#0000ff size=2>What
year are the SWs? they have had grid inter tie for years, if the inverters were
manufactured prior to I think 2001 then you do not need to have the gti box
installed. If the guys on a budget why spend the extra $$$$? Its not
the most efficient it certainly cheaper. </FONT></SPAN></DIV>
<BLOCKQUOTE style="MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma size=2>-----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>robert
ellison<BR><B>Sent:</B> Wednesday, March 25, 2009 9:39 AM<BR><B>To:</B>
RE-wrenches<BR><B>Subject:</B> [RE-wrenches] Battery based grid tie
question.<BR><BR></FONT></DIV>
<DIV>On a similar question to what works well together. I am rebuilding the
wind side of an old off grid system that the new owner has brought the grid
in. He wants to grid tie the system. Another dealer is doing the solar side of
things.</DIV>
<DIV>My thoughts are the 48 volt SW inverters need to go, and replace them
with Outback 48 volt grid tie units and have the wind keep the battery up. Am
I correct that when the batteries are full from what ever source the outbacks
will grid connect and net meter any excess power to the grid? Seems that I
remember that they will but almost never get a call for grid tie up here in
the sticks so I figured I would ask the knowledge base.</DIV>
<DIV> </DIV>
<DIV>I would suggest he keep the SW inverters to generator charge in case of a
long power outage as last I knew the Outbacks (FX) did not care for generator
power.</DIV>
<DIV> </DIV>
<DIV>I could probably research it but the list is faster and probably
more accurate that reading all the manuals with all my free time these
days!</DIV>
<DIV> </DIV>
<DIV>Needless to say the fellow in on a budrgt and the power company brought
the power into the main building not the power house. Can't make things
easy......</DIV>
<DIV> </DIV>
<DIV>Thanks,</DIV>
<DIV>Bob<BR><BR></DIV>
<DIV class=gmail_quote>2009/3/23 <SPAN dir=ltr><<A
href="mailto:I2P@aol.com">I2P@aol.com</A>></SPAN><BR>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<DIV style="FONT-SIZE: 10pt; COLOR: #000000; FONT-FAMILY: Arial"><FONT
face=Arial color=#000000 size=2>
<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
style="FONT: 10pt arial,san-serif; COLOR: black">
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