[RE-wrenches] Sunny Island DC Load Centers, Sealed Batteries

[Walt Ratterman]

Hello Kirpal,

 

Walt Ratterman here.  I can respond to at least the first part.

 

In Burundi, we used three 5 KW Sunny Island 5048's in a three phase
configuration.  

 

For all of the DC and AC breakers, wireways, etc., etc., we used the Outback
Flexware equipment.

 

We put the DC on the bottom and the AC on the top.  Due to the width of the
SI's, we used 2 - FW1000 systems to do this.  (And I am glad - we actually
needed all of the wiring space.  I think it would work really well for your
system.

 

Of course, there may be some other good choices that I would be anxious to
learn about as well.

 

You can see some good photos of this installation at our photo gallery -
linked form our Home Page at www.sunepi.org.  Click on the cover for the
photos for the Burundi / Kigutu / Village Health Works / SELF project.

 

Feel free to holler if you need any specifics on how we did anything here.

 

OH - on your other question.I have no experience on large sealed banks, but
Rolls now has AGM's that start at T-105 size, include the 8G8D sizes, and
then go all the way up to 2V 3300 Ah.

 

Thanks!!

 

Walt

 

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Kirpal
Khalsa
Sent: Wednesday, October 07, 2009 6:15 PM
To: RE-wrenches
Subject: [RE-wrenches] Sunny Island DC Load Centers, Sealed Batteries

 

Hi Folks......we have an upcoming Sunny Island/Sunny Boy AC Coupled system
installation.....We have mostly done Outback and Xantrex battery based
systems.......and like the available supporting DC load centers with main
breakers and other DC load and charging breakers......
What are folks using for the Sunny Island products? Outback Flexware DC
500's? or 1000's?
This particular system will consist of 4 Sunny Islands and therefore will
need four main breakers......  We primarily need a breaker box to locate our
main DC breakers coming from the battery bank.......Any advice, experiences
would be appreciated......

Also on that note.....anyone wish to share any experience or advice on the
GNB Absolyte GX series batteries or the East Penn Deka UnigyII as a standby
grid connected back up battery bank....They both seem like they are good for
primarily hanging out in float with occasional deep discharges not
negatively affecting the health of the batteries.....This is the type of
service we expect the batteries will be in primarily......Any
recommendations of one brand over the other.....The vertical stacking seems
convenient as far as space is concerned.....maintenece free......any
recommendations on a good supplier on the west coast?  Any other brands i
should be looking at in the sealed battery category for a fairly large Ah
battery bank?
100 thanks !
-- 
Sunny Regards,
Kirpal Khalsa
NABCEP Certified Solar PV Installer
Renewable Energy Systems
www.oregonsolarworks.com
541-218-0201 m
541-592-3958 o

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