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<font size=3>Kelly:<br><br>
A big a** generator and a transfer switch.<br><br>
William Miller<br><br>
PS: Seriously, I have seen projects like this and rarely is there a
natural subdivision in the power distribution that allows one to back up
a portion of the loads. Backing up a huge power demand, which I
assume this is, is best done by rotating machinery.<br><br>
Wm<br><br>
<br><br>
At 07:52 AM 2/1/2010, holtek@sbcglobal.net wrote:<br>
<blockquote type=cite class=cite cite>Project:<br>
43kw system originally designed as grid-tie. 208 3ph, 6 SB7000(208).
Equipment already rec'd.<br>
The curve ball.....client now wants some back-up capabilities that
include solar......there is a 7.92kw sub-array in the system that may be
part of the solution. Any thoughts?<br><br>
<br><br>
Holt E. Kelly<br>
Holtek Fireplace & Solar Products<br>
500 Jewell Dr.<br>
Waco TX. 76712<br>
254-751-9111<br>
<a href="http://www.holteksolar.com/" eudora="autourl">www.holteksolar.com</a><br><br>
----- Original Message ----- From: "Peter Parrish"
<peter.parrish@calsolareng.com><br>
To: <re-wrenches@re-wrenches.org><br>
Sent: Sunday, January 31, 2010 5:19 PM<br>
Subject: [RE-wrenches] Couple of Qustions about AGM batteries<br><br>
<br>
<blockquote type=cite class=cite cite>We have put together a 850 Wdc
portable stand-alone PV system. It uses a<br>
Blue Sky 3024DiL charge controller, a pair of SunXtender 250 A-hr
AGM<br>
batteries (24 volt configuration), and a Xantrex Prosine 1000
inverter.<br><br>
We have been using this system for powering "events" and
getting some good<br>
marketing from the activities. Everything has worked out well, and
the<br>
system is not being used now and probably won't until March or
April<br>
sometime.<br><br>
We have let the system fully charge the batteries through
bulk/absorption<br>
and now float. The float conditions are 26.4 V and 2.0 A at a
battery<br>
temperature of 21 deg-C.<br><br>
My first question: is it alright to let the batteries float every day
for<br>
the next 6 to 8 weeks, or should I disconnect them from the rest of
the<br>
system until we are ready to use the system again?<br><br>
My second question: since the 3024iL can perform an equalization, is
there a<br>
safe equalization procedure for these AGM batteries?<br><br>
- Peter<br><br>
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>
peter.parrish@calsolareng.com<br>
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885<br><br>
<br>
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11:35:00</blockquote>
<x-sigsep><p></x-sigsep>
<u>Please note new e-mail address and domain:<br><br>
</u>William Miller <br>
Miller Solar<br>
Voice :805-438-5600<br>
email: william@millersolar.com<br>
<a href="http://millersolar.com/" eudora="autourl">http://millersolar.com<br>
</a>License No. C-10-773985<br>
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