Kelly:
A big a** generator and a transfer switch.
William Miller
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.
Wm
At 07:52 AM 2/1/2010, hol...@sbcglobal.net wrote:
Project:
43kw system originally designed as grid-tie. 208 3ph, 6 SB7000(208).
Equipment already rec'd.
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?
Holt E. Kelly
Holtek Fireplace & Solar Products
500 Jewell Dr.
Waco TX. 76712
254-751-9111
www.holteksolar.com
----- Original Message ----- From: "Peter Parrish"
<peter.parr...@calsolareng.com>
To: <re-wrenc...@re-wrenches.org>
Sent: Sunday, January 31, 2010 5:19 PM
Subject: [RE-wrenches] Couple of Qustions about AGM batteries
We have put together a 850 Wdc portable stand-alone PV system. It uses a
Blue Sky 3024DiL charge controller, a pair of SunXtender 250 A-hr AGM
batteries (24 volt configuration), and a Xantrex Prosine 1000 inverter.
We have been using this system for powering "events" and getting some good
marketing from the activities. Everything has worked out well, and the
system is not being used now and probably won't until March or April
sometime.
We have let the system fully charge the batteries through bulk/absorption
and now float. The float conditions are 26.4 V and 2.0 A at a battery
temperature of 21 deg-C.
My first question: is it alright to let the batteries float every day for
the next 6 to 8 weeks, or should I disconnect them from the rest of the
system until we are ready to use the system again?
My second question: since the 3024iL can perform an equalization, is there a
safe equalization procedure for these AGM batteries?
- Peter
Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parr...@calsolareng.com
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885
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Please note new e-mail address and domain:
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Miller Solar
Voice :805-438-5600
email: will...@millersolar.com
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License No. C-10-773985
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