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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'>Hi Drake (and everyone else interested in this
thread),</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Armed with the information from my
esteemed colleagues, we went ahead and purchased a SunWise “Solar
Ready-Grid Tie Battery System”, a SRB3.6 to be exact. The heart of the
system is a GVFX3648. I ordered it without the Charge controller and purchased a
SB3000 and 3150 Wdc of PV to go with it. </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </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 also purchased a Grainger 2P2T relay
with a 12 V coil in a NC configuration (to disconnect the SB when the batteries
are fully charged in off-grid mode) and an Outback PSX-240 to transform the 240
Vac to 120 Vac (in order to interface with the GVFX3648.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>When we looked into hooking the relay up
to the AUX-OUT of the GVFX3648, we discovered that it was already dedicated to
the fan…</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>So it looks like we will need to put
something together to sense the battery voltage and energize the relay coil,
when we exceed the threshold. Any recommendations for a add-on HVD? And exactly
what threshold voltage should we use for 8ea 6V 305 Ah (C/24) AGM batteries?</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>And for Drake: I gravitated away from
Xantrex because of a very unsatisfactory experience with a XW6048. The system
failed to work properly and Xantrex “hemmed and hawed” for over six
months. Bottom line: we made six service calls, two firmware upgrades and
probably two dozen calls to largely clueless group tech supporters. Through it
all, I lost the customer’s confidence and he chose another integrator to
do a follow on commercial project. The last part of course was the worst part of
the experience.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>- Peter </span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hi Peter,<br>
<br>
The Outback inverter will not regulate battery charge while AC coupled.
The SMA is the only system designed to give a regulated charge to batteries in
the AC coupled mode. The Outback auxiliary relay can be used to drive a relay
that will disconnect the input to the inverter, to regulate battery charge when
grid is down. I like an "Ice Cube Rely" (such as Idec) to
control a contactor. The coil of the Idec uses very little power. <br>
<br>
Why did you gravitate toward Xantrex from Outback?<br>
<br>
Drake <br>
<br>
<br>
<br>
At 09:25 PM 8/4/2009, you wrote:<br>
<br>
</span></font></p>
<p class=MsoNormal><font size=2 color=navy face="Times New Roman"><span
style='font-size:10.0pt;color:navy'>I would like to start a thread on
AC-coupled grid tied battery backup systems. We do a fair number of GTBBSs
(four to five a year) and I have gravitated from the Outback solution to the
Xantrex XW solution. I am not happy with the XW product and especially not
happy with Xantrexs post sales technical support. I know I have more to
learn about these puppies in general, so I am genuinely disappointed with the
uneven TS from Xantrex.<br>
<br>
</span></font><font color=navy><span style='color:navy'>I also had this nagging
feeling that the heart of a GTBBS should be the tried and true high voltage
inverter. Enter the SunPower positive ground requirement, and now an AC coupled
system seems the best solution.<br>
<br>
>From the white paper that Outback sent me, there was no mention of a heavy duty
relay. Doesnt the Outback inverter regulate the battery charge control?<br>
<br>
Has anyone tried to order a SunWize Solar Ready Battery Assembly
without the charge controller (e.g. P/N SRB3.6). It would seem that this is a
nice package for small energy needs (13 to 26 kWh of battery backup). <br>
</span></font><br>
<font color=navy><span style='color:navy'>- Peter <br>
</span></font><img width=67 height=80 src="cid:image001.gif@01CA3A09.2088BFB0"
alt="[]"><font size=1 color=navy><span style='font-size:7.5pt;color:navy'>Peter
T. Parrish, Ph.D., President<br>
California Solar Engineering, Inc.<br>
820 Cynthia Ave., Los Angeles, CA 90065<br>
CA Lic. 854779, NABCEP Cert. 031806-26<br>
<a href="mailto:peter.parrish@calsolareng.com">peter.parrish@calsolareng.com</a>
<br>
Ph 323-258-8883, Mobile 323-839-6108, Fax
323-258-8885
<br>
</span></font><br>
<font color=navy><span style='color:navy'> </span></font></p>
<div class=MsoNormal align=center style='text-align:center'><font size=3
color=navy face="Times New Roman"><span style='font-size:12.0pt;color:navy'>
<hr size=2 width="100%" align=center>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
re-wrenches-bounces@lists.re-wrenches.org [<a
href="mailto:re-wrenches-bounces@lists.re-wrenches.org" eudora=autourl>
mailto:re-wrenches-bounces@lists.re-wrenches.org</a>] <b><span
style='font-weight:bold'>On Behalf Of </span></b>William Miller<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, August 04, 2009
5:55 PM<br>
<b><span style='font-weight:bold'>To:</span></b> jryago@netscape.com;
RE-wrenches<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [RE-wrenches] XW6048
parts problem<br>
</span></font> <br>
Jeff:<br>
<br>
I have a spare. They are not kept in the socket but are loose in a
bag. Send me your mailing address off list. I leave tomorrow for a
week, so I hope I see your address before I go.<br>
<br>
William<br>
<br>
<br>
<br>
<br>
At 04:59 PM 8/4/2009, you wrote:<br>
<br>
Just completed a large residential grid/gen/solar/battery system using a XW6048
inverter.<br>
<br>
We are using a SunnyBoy inverter at the array and doing an AC coupled
backfeed. To do this we have installed a heavy duty relay in the output
of the SunnyBoy, and are using the aux. relay contacts on the XW unit to close
this relay when battery voltage is at high limit (during no load power outage
to prevent over-charging)<br>
<br>
Not sure if we lost it during installation, if it shook loose in shipment and
fell out, or was missing to begin with, but to connect to the aux. contacts in
th XW requires a very small green flat 5-pin connector which is missing.<br>
<br>
I contacted multiple people at Xantrex and their service center, waded through
their web site, and finally talked to a service tech. He advised that
"he was looking for an extra one of these connectors 6 months ago and
still has not received it, as these compoments are made and assembled in China
and they do not stock anything that is considered an assembly part used in
China to build their units."<br>
<br>
First, I did not realize these inverters were being assembled in China, and
second, who ever heard of not stocking a replacement part just because its made
in China. If that were true, 95% of everything sold today in US would not
be able to order replacement parts.<br>
<br>
Anybody out their know if there is a Radio Shack type supplier where I can
order a bag of these and get on with the system startup and my life?<br>
<br>
Thanks,<br>
<br>
Jeff Yago<br>
<br>
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<p></x-sigsep><font size=3 color=blue face="Times New Roman"><span
style='font-size:12.0pt;color:blue'><x-sigsep>Drake Chamberlin<br>
Athens Electric<br>
OH License 44810<br>
CO License 3773<br>
NABCEP </span></font><font size=1 color=blue><span style='font-size:7.5pt;
color:blue'>TM </span></font><font color=blue><span style='color:blue'>Certified
PV Installer <br>
Office - 740-448-7328<br>
Mobile - 740-856-9648 </span></font></p>
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