I don't think its worth all that rewiring now to preserve an imperfect
battery design that's probably only going to last a few more years
anyway. Just use those batteries up, and come in with a new single or
double string of larger batteries.
I know all of us wrenches would like to see amp circulation between
strings with some scientific accuracy, but is that in the customer's
best interest?
Ray Walters
Remote Solar
303 505-8760
On 7/23/18 10:33 AM, offgridso...@sti.net wrote:
There will be troubleshooting with this design. Probably easier to use
it up and redesign. If my name was on the inheritance,
I would do it now or at the minimum fuse the strings.
On Mon, 23 Jul 2018 12:26:32 -0400, Chris Schaefer
<ch...@solarandwindfx.com> wrote:
And it's not a bad idea to add a shunt in each string for trouble
shooting down the road.
Christopher
On Mon, Jul 23, 2018 at 11:24 AM, Steve Higgins <st...@surrette.com
<mailto:st...@surrette.com>> wrote:
I would at least rewire them like this...
image.png
Remember all the parallel strings take offs must be the same
size/length, otherwise you are going to exacerbate imbalance issues.
<http://www.rollsbattery.com>
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On Mon, Jul 23, 2018 at 7:24 AM Jerry Shafer
<jerrysgarag...@gmail.com <mailto:jerrysgarag...@gmail.com>> wrote:
Dave
Its a good idea to think of batteries the same way you do PV
Modules. Any time you have more then two strings they get
individual fuse protection, this is also good for diagnoses
purpuses too.
The current installation has no protection, safety and l
would change it.
As far as operation goes it works but thats not a exceptable
reason to leave it that way is.
Jerry
On Mon, Jul 23, 2018, 6:56 AM Dave Tedeyan
<dtede...@taitem.com <mailto:dtede...@taitem.com>> 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 <http://www.taitem.com/>
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