substitute for Todd battery chargers [RE-wrenches]

Tue Apr 24 02:16:37 PDT 2001

The owner is an architect, so hopefully they are designed carry
the weight.  The system was set up by another electrical contracting
outfit, and approved by inspectors before we saw it. Go figure, better fuse
that pack, 1 fuse every couple strings. I sure would hate to see it run
away.....

A third inverter might be the way to go.  May be a better plan would be for
the owner to sell off some of the batteries and the 3 phase generator and
buy a single phase gen-set.  That is the way to go if the option is
available.
We are on time to help get the loads to the
house, as of yet unbuilt, suitable for an off grid system. Now THAT I like
to hear, I regularly sound like a broken record when I try to get people to
cut power use and get efficient appliances. I probably lose more system
sales because of that than any other reason. They accuse me of lying when I
tell them that I average 111 kWh a month and could cut more, but am close to
the point of diminishing returns.

Later,
Bob

Thanks for the food for thought.

Drake

At 07:18 PM 04/23/2001 -0400, you wrote:
>Drake,
>
>Have I got this correct? 9 Strings of L-16's? Did you put this monster
>together and how do you ever get it to charge it evenly?
>I sure hope it is on a concrete floor, at 4428# + connectors ( probably at
>least a 100 # of connectors) it would be hell on most wood floors!
>
>I have added 2nd inverters just to have the charging capacity in the past,
>have you thought about just adding a third to help balance the third leg?
>But you are putting a ton of strain on your major + and - terminals. Hook
>them up at diagonally opposite corners and figure out how to handle the
>shunt.
>Instead of a bunch of other chargers just get another inverter strictly as
a
>charger. I have used Hearts in the past to do this job with success.
>A Heart 2524 would probably cost you under a grand or so, I can't help but
>think the other chargers would be more than that. It also gives you an
>emergency inverter if the you know what hits the fan.
>
>Just my opinion, and you know what they say about those....
>
>Bob
>
>
>
>RE. Ellison
>Supplier of;
>Diesel Generators &
>Alternative Energy Systems & Supplies
>34642 Countryman Road
>Theresa, NY. USA
>                               13691-2076
>
>
>
>-----Original Message-----
>From:   Drake Chamberlin - Electrical Energy
[mailto:solar at eagle-access.net]
>Sent:   Monday, April 23, 2001 3:44 PM
>To:     RE-wrenches at topica.com
>Subject:        Re: substitute for Todd battery chargers [RE-wrenches]
>
>Hi Allan,
>
>Thanks for your input.  This is a giant battery bank consisting of 36 L-16
>batteries.   I calculate 3330 amp hours in the bank.
>
>Thanks,
>
>Drake
>
>At 10:22 AM 04/23/2001 -0600, you wrote:
> >Drake, Just a note, with 2 SW4024s and 5 Iota chargers, is your total C/
> >rate within capacity for the batteries you are using? You will have about
> >300A input @24V. At about a C/8 max, that takes 2500 Ahrs of battery.
> >Allan @+E
> >----- Original Message -----
> >From: "Drake Chamberlin - Electrical Energy" <solar at eagle-access.net>
> >To: <RE-wrenches at topica.com>
> >Sent: Saturday, April 21, 2001 3:34 PM
> >Subject: Re: substitute for Todd battery chargers [RE-wrenches]
> >
> >
> > > Hi Wrenches and Doug,
> > >
> > > The 24 volt Iota chargers look like they might also be a possible
>option.
> > >
> > > Can you run the Iota battery chargers in parallel?  We would probably
>run
> > > 5, 25 amp, 24 volt chargers in parallel.  They would also be in
parallel
> > > with 2 Trace SW 4024 inverters.  We would be using the Iota chargers
to
> > > balance the windings of the three phase generator.
> > >
> >
> >
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