Digest for RE-wrenches at topica.com, issue 1340 [RE-wrenches]

[Jay Peltz, Peltz Power]

HI Steve,

Thanks but the problem is hes got over 200 amps at 12v, or 100 amps at 24v,
so that would need two MX's.

I'll let him know though,

thanks,
jay


----- Original Message ----- 
From: "Steve Willey, Backwoods Solar" <steve at backwoodssolar.com>
To: <RE-wrenches at topica.com>
Sent: Tuesday, January 13, 2004 1:09 PM
Subject: Re: Digest for RE-wrenches at topica.com, issue 1340 [RE-wrenches]


> On the stacking question, where you have two 12 volt inverters and a 24
volt
> bank, I would caution against a DC-DC converter.  While these allow taking
> 12 volts DC applications from a 24 volt bank, we find many converters fail
> when the half-tap load is an inverter.  This is due to the ripple that is
> imposed across the converter which it tries to follow and correct.  They
run
> really hot.
>
> The other solution suggested, changing to different inverters to match the
> battery voltage is one way, but a third way:  REARRANGE the battery bank
to
> a 12 volt bank, then use the Outback MX charge control to charge the 12
volt
> bank from whatever 24 volt source you have.
> Steve Willey,
> Backwoods Solar Electric Systems
> steve at backwoodssolar.com
>
> Hi All,
>
> Can I stack 2 Sw 2512's into a center taped 24v battery bank?
>
> The reason as I'm sure you are going to ask is a friend with a really
large
> hydro, we are talking 200 amps at 12v from the hydro.  And he is trying to
> improve that by going to 24v.
>
> But he already has the SW's, hence the question.
>
> Thanks,
>
> jay
>
> Peltz Power
>
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