c-40 battery charging [RE-wrenches]

[Greg Egan]

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Matt,

Unless I'm missing something, the buss bar doesn't prevent one string 
getting overcharged by the other strings. The way I understand it, if 
string "A" has some kind of a short, parallel strings B & C will try to 
charge it. If we only have a fuse between the buss bar and the DC 
disconnect, it doesn't protect against overcurrent when one or more 
strings are charging the shorted string.

Greg



Matt Tritt wrote:
> I think that with multiple strings the buss bar plan is the way to go to
> avoid having to fuse each string. If there is no reason for any one
> string to take too much current the need for an individual string to
> have a fuse is negated. This is so weird. I used to connect all my
> parallel strings to a common buss until just a few years ago. A big
> battery guru told me it wasn't necessary.
> 
> The more things change the more they stay the same.
> 
> Matt T
> 
> -----Original Message-----
> From: William Miller [mailto:wrmiller at slonet.org] 
> Sent: Friday, October 10, 2003 1:38 AM
> To: RE-wrenches at topica.com
> Subject: Re: c-40 battery charging [RE-wrenches]
> 
> 
> Learned Colleagues:
> 
> 
> Would it be advisable to install a class T fuse between strings?
> 
> William Miller
> 
> 
> 
> 
> At 08:39 PM 10/10/2003 +1300, you wrote:
> 
>>I have seen the result of an AGM meltdown.  It was a telecom 
>>installation and one block went bad, the rest discharged into it and 
>>the result was an unbelievable mess.  One string is the way to go.
>>
>>Cheers,
>>Bruce Geddes
>>PowerOn
>>
> 
> 
> __________________________________________________________________
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> Miller Power and Communications
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