Re: (ET) PV powered ET more questions

["daveb" <daveb seanet com>]

yes that's how and in the order that I measured each.  I don't have the 
front 
two back in yet (want to clean and paint in there first.

thanks for explanation.  I'll add the 2 front batteries and see what I get.

I'm sure whatever the results I'll have more questions!

dave

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---------- Original Message -----------
From: "" <thumphrey mynra com>
To: "et" <Elec-trak cosmos phy tufts edu>
Sent: Wed, 5 May 2004 15:42:46 -0400
Subject: Re: (ET) PV powered ET more questions

> How about the batteries in the front, do you get readings from them 
> as well.
> 
> and just for reference...the two front batteries are 1 and 2, the 
> four back batteries are 3-6. Starting at the seat on the right they 
> are numbered clockwise as 3-5-6-4
> 
>      Tractor front
> 
>        Charger
> 
>          B-1
> 
>          B-2
> 
>       Steering
> 
>      B-4    B-3
>         SEAT
>      B-6    B-5
> 
>     Tractor Back
> 
> This is important when trying to isolate leakages based on voltage 
> readings.
> 
> for example...
> 
> B-3 1.2v
> B-4 2.4v
> B-5 3.6v
> B-6 4.8v
> 
> B-1 -2.4v
> B-2 -1.2v
> 
> means there is a leakage path somewhere in circuitry between the 
> front box and the back box. Most likely culprit...hmmmm, don't know, 
> try it with the power disconnect disengaged and see if something 
> changes. The PD splits the pack from front to rear, one of the two 
> sets of readings should disappear, then you know which side of the 
> PD the fault is on.
> 
> I don't have my schemaics in front of me right now, so that's about 
> all I can contribute. I'll take a look at them tonite, unless 
> someone has a digicopy they can send.
> 
> >
> >
> >
> > thanks all.  yes this all helps.  it's better than school!
> >
> > to clear up the confusion about the 1v per battery...
> >
> > I have the four batteries in the back wired together in series total 
voltage
> >
> > right about 30.something...  I have only the cable coming off the last
> > battery going to the shunt connected.   I then check voltage between 
battery
> >
> > one and the frame and get a voltage reading 1.2something volts,  go to
> > battery two and get a reading of 2.4 etc until I get to the last 
> > battery 
and
> >
> > get a reading of 4.8v I think it was.
> >
> > that's when I unhooked the cable from the pack that goes to the shunt 
> > and
> > checked it with the ohmeter expecting to get a reading and didn't.
> >
> > from one of the previous posts I think I should try this with an analog
> > meter
> > next time I'm on the farm.
> >
> > thanks all, I'm going to print off all responses and take with me this
> > wkend.
> >
> > dave
> > seattle
> >
> >
> 
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------- End of Original Message -------