Perhaps suggesting the correct amp Hr battery bank would eliminate the
_need_ for buss bar. 2 volt EX1400 1K amp hour batteries work very
well good warrantee. all the fusing & interconnects would be eliminated.
MORE AHs = less interconnects, always the correct way to
go!
On Jul 24, 2018, at 9:40 AM, Dave Tedeyan <dtede...@taitem.com>
wrote:
Thank you all for the ideas and suggestions. This person in
particular had #4 wire for the battery connections, so they are all
getting replaced with anyway. So it seems like rewiring to a busbar
with fuses will be the way to go. And although not ideal to have so
many strings, this will be more cost effective than just getting a
whole new battery bank right off the bat when they have 10 batteries
that have essentially never been used.
Cheers,
Dave
--
Dave Tedeyan
SENIOR ENGINEER
TAITEM ENGINEERING, PC
10 Verizon Lane, Lansing, NY 14882
Voice: (607) 930-3481 x6
www.taitem.com [1] On Mon, Jul 23, 2018 at 8:50 PM, Glenn Burt
<glenn.b...@glbcc.com>
wrote:
Hi Christopher,
I buy my copper buss material from McMaster Carr in appropriate
dimensions for the current I am expecting.
I then cut it to the lengths I need, drill for appropriate size
fasteners and use 2 layers of heat-shrink tubing to protect the exposed
bar.
Hope this helps.
-Glenn
FROM: RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> ON
BEHALF OF Chris Schaefer
SENT: Monday, July 23, 2018 2:28 PM
TO: RE-wrenches <re-wrenches@lists.re-wrenches.org>
SUBJECT: Re: [RE-wrenches] 5 battery strings
What source are you all using for buss bars for these multiple
battery string set ups?
Christopher
On Mon, Jul 23, 2018 at 2:16 PM, <t...@wagonmaker.com> wrote:
Separate out the individual series strings and run each string to a
buss bar setup. Remember it isn't just resistance differences between
batteries but resistance difference between cells as well. In a setup
like the existing one the resistance differences can really add up and
if one battery fails the entire system will be offline. Running each
string to a positive and negative common buss bar means you can remove
individual strings without disrupting the entire storage and the
system can continue operating. Also, it means the only resistance
issues of substance are within individual series pairs not the entire
interconnected bank.
I ran 10 series pairs of 12v AGM batteries, each pair to a common
buss and it was the longest lasting, most stable battery bank I had.
That was years ago and now it would require fusing each string but
for longevity and stability it is the best bet.
Tom
On 2018-07-23 03:56, Dave Tedeyan wrote:
Since we are on the topic of bad battery practices...
I may be fixing up a system that was both designed and installed
very poorly. They have a 24V Outback VFXR inverter, and ten 12V AGM
batteries wired into 5 parallel strings. I know that is a bad idea, but
since they already have the equipment, are there any safety issues by
re-using this equipment? It
is for a grid tie battery backup system that will remain in float most
of the time. I assume that the batteries will not last particularly
long, but is there any harm in using them and then just getting new
batteries once they fail?
Stringing is shown in the attached picture.
Cheers,
Dave
--
Dave Tedeyan
SENIOR ENGINEER
TAITEM ENGINEERING, PC
10 Verizon Lane, Lansing, NY 14882
Voice: (607) 930-3481 x6
www.taitem.com [1] [1]
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