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

[Mick Abraham]

Hi, two questions:

(1) Doesn't each Sunny Island unit already include a DC disconnect breaker
for the connection to battery?

(2) Aren't those big DC breakers in the Outback boxes restricted for
"vertical installation only"?

I've got my own 3 phase Sunny Island thing coming up (maybe) so I look
forward to these answers.

Mick Abraham, Proprietor
www.abrahamsolar.com

Voice: 970-731-4675


On Wed, Oct 7, 2009 at 7:26 PM, Walt Ratterman <
wratterman at sunenergypower.com> wrote:

>  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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