Send EV mailing list submissions to
        ev@lists.sjsu.edu

To subscribe or unsubscribe via the World Wide Web, visit
        http://lists.sjsu.edu/mailman/listinfo/ev
or, via email, send a message with subject or body 'help' to
        [EMAIL PROTECTED]

You can reach the person managing the list at
        [EMAIL PROTECTED]

When replying, please edit your Subject line so it is more specific
than "Re: Contents of EV digest..."


Today's Topics:

   1. Re: Affordable AC Motor? (Arak Leatham)
   2. Fwd: 3 pole circuit breaker (Travis Gintz)
   3. Re: Affordable AC Motor? (Travis Gintz)
   4. So Close (Bill Dennis)
   5. Collegiate Electric Vehicle Design Competition ([EMAIL PROTECTED])
   6. Re: Fwd: 3 pole circuit breaker (Tehben Dean)
   7. Re: Circuit racing and continuous duty (john fisher)
   8. Re: Collegiate Electric Vehicle Design Competition
      (Peter VanDerWal)
   9. Re: Fwd: 3 pole circuit breaker (Travis Gintz)
  10. Re: Dennis Berubes S10. (Pestka, Dennis J)
  11. Re: Fwd: 3 pole circuit breaker (Peter Gabrielsson)


----------------------------------------------------------------------

Message: 1
Date: Fri, 2 Nov 2007 10:24:51 -0700
From: Arak Leatham <[EMAIL PROTECTED]>
Subject: Re: [EVDL] Affordable AC Motor?
To: Electric Vehicle Discussion List <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset="Windows-1252"


I didn't see this answered. If you mean the DC ETek There is a well known 
similar replacment. PMG132.
 
Sorry if dup info.



Arak Leatham - Web and Desktop Systems Developer




Estimating, Point of Sale, Tracking, Reporting Applications> Date: Thu, 1 Nov 
2007 10:51:33 -0700> From: [EMAIL PROTECTED]> To: ev@lists.sjsu.edu> Subject: 
Re: [EVDL] Affordable AC Motor?> > So does anyone know of a small AC motor for 
144V or below that would> work with a motorcycle besides the BLDC Etek?> > On 
11/1/07, Dan Frederiksen <[EMAIL PROTECTED]> wrote:> > : ) if a little 
provocation gets the job done I'm not above it.> > but please give them a call 
for the parts. it sounds like there are at> > least motor but probably more. 
they might be expensive but then at least> > we'll know where we stand and 
don't waste more time hoping in that> > direction. we might be positively 
surprised.> > as for the botton I think that's actually a good thing, maybe it 
gets> > them hooked on the good stuff until they scream for more :)> > although 
hybrids are not really efficient it's a great way to expose> > electric drive.> 
> the EV grin is more addictive than crack :)> >> > D!
 an> >> > Ben wrote:> > > A little harsh? :) Really, I was curious about those 
motors as well -> > > the new Highlander hybrid has a 165HP, 247 lb-ft 
electric, plus 4WD> > > models have an additional rear motor -- I can't find 
the specs on it> > > now, but I seem to remember it was around 68HP.> > >> > > 
I dug around ebay looking, but didn't find any used parts for sale. I> > > 
haven't called a dealership for parts prices because with what they> > > like 
to charge usually for parts, you'd probably be better off buying> > > a Seimens 
(etc) AC drive system.> > >> > > Interesting tidbit - I see in reviews of the 
2008 Highlander that they> > > offer an "EV Button" that allows 1 mile of 25mph 
electric-only> > > driving. Neat, but a little .. short. I half wonder if it 
isn't partly> > > psychological - can't have them thinking batteries can take 
you> > > further or faster than that - but it could also be a duty cycle or 
RPM> > > issue with the motors.> > >> > > On 10/31/07, Dan Fr!
 ederiksen <[EMAIL PROTECTED]> wrote:> > >> > >> > >> fu!
 rther, a
s I've stated before, why not look into what motors the> > >> several available 
hybrids use today? once in a consumer mass production> > >> environment the 
prices tend to be much more reasonable. I was at a car> > >> show the other day 
where I saw the very nice Lexus LS600h which although> > >> still a mainly gas 
hybrid, the salesman claimed 530Nm torque on the> > >> electric motors alone. 
sure a lexus part could be expensive but maybe> > >> someone could look into 
spare parts cost of some of the more mainstream> > >> SUV hybrids in USA. some 
specs and a price. would it kill someone is USA> > >> to do that? : )> > >> is 
it an EV developers list or a rest home> > >>> > >> Dan> > >>> > >> > > 
_______________________________________________> > > For subscription options, 
see> > > http://lists.sjsu.edu/mailman/listinfo/ev> > >> > >> >> > 
_______________________________________________> > For subscription options, 
see> > http://lists.sjsu.edu/mailman/listinfo/ev> >> > > -- > Trav!
 is Gintz> 1986 Honda VFR AC conversion> Http://blog.evfr.net/> > 
_______________________________________________> For subscription options, see> 
http://lists.sjsu.edu/mailman/listinfo/ev
_________________________________________________________________
Windows Live Hotmail and Microsoft Office Outlook ? together at last. ?Get it 
now.
http://office.microsoft.com/en-us/outlook/HA102225181033.aspx?pid=CL100626971033

------------------------------

Message: 2
Date: Fri, 2 Nov 2007 10:28:08 -0700
From: "Travis Gintz" <[EMAIL PROTECTED]>
Subject: [EVDL] Fwd: 3 pole circuit breaker
To: ev@lists.sjsu.edu
Message-ID:
        <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1

I forwarded this to my PE (professional engineer) buddy, who
specializes in High voltage and Power. This was his reply. I'd tend to
be on his side with this....

---------- Forwarded message ----------
From: Mark
Date: Nov 2, 2007 10:04 AM
Subject: RE: 3 pole circuit breaker



Travis you are correct.  You can not series the two poles together to
get a higher voltage rating nor can you series contacts on a thermomag
breaker for higher current rating.   In the controls world you can
series two contacts on a relay for higher current but you can not do
that on a thermo mag circuit breaker.



>
> ----- Original Message -----
> From: "Tehben Dean" <[EMAIL PROTECTED]>
> To: "EV mail list" <ev@lists.sjsu.edu>
> Sent: Wednesday, October 31, 2007 2:22 PM
> Subject: [EVDL] 3 pole circuit breaker
>
>
> > I am going to have a 312v (more when fully charged) system that is
> > capable of drawing around 300amps.
> > So my question is can I use a Square D I-Line thermo-magnetic 3 pole

> > circuit breaker rated 350amps at 600v AC or 250v DC and wire it up
> > so that 2 of the poles are in series to increase it's rated voltage?
> >
> > Thanks,
> > --
> > Tehben
> > '90 Toyota 4x4 Pickup
> > 'hElix EV'
> > Website: www.helixev.com
> > evalbum: http://www.austinev.org/evalbum/1225



------------------------------

Message: 3
Date: Fri, 2 Nov 2007 10:30:56 -0700
From: "Travis Gintz" <[EMAIL PROTECTED]>
Subject: Re: [EVDL] Affordable AC Motor?
To: "Electric Vehicle Discussion List" <ev@lists.sjsu.edu>
Message-ID:
        <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=WINDOWS-1252

Actually Arak, I was asking about an AC motor. There is the brushless
Etek (Mars Motor) that is a 48V AC motor that uses a sevcon controller
at 48V.

I've got a 144V AC controller that I'm helping some guys with and need
a higher voltage/current motor. Just trying to see whats out there. I
might just take a 208/120V motor and rewire the windings so that it
runs 120V 3 phase.

If someone knows of another one out there...let me know. I'm not
looking for a DC brushed motor.

On 11/2/07, Arak Leatham <[EMAIL PROTECTED]> wrote:
>
> I didn't see this answered. If you mean the DC ETek There is a well known 
> similar replacment. PMG132.
>
> Sorry if dup info.
>
>
>
> Arak Leatham - Web and Desktop Systems Developer
>
>
>
>
> Estimating, Point of Sale, Tracking, Reporting Applications> Date: Thu, 1 Nov 
> 2007 10:51:33 -0700> From: [EMAIL PROTECTED]> To: ev@lists.sjsu.edu> Subject: 
> Re: [EVDL] Affordable AC Motor?> > So does anyone know of a small AC motor 
> for 144V or below that would> work with a motorcycle besides the BLDC Etek?> 
> > On 11/1/07, Dan Frederiksen <[EMAIL PROTECTED]> wrote:> > : ) if a little 
> provocation gets the job done I'm not above it.> > but please give them a 
> call for the parts. it sounds like there are at> > least motor but probably 
> more. they might be expensive but then at least> > we'll know where we stand 
> and don't waste more time hoping in that> > direction. we might be positively 
> surprised.> > as for the botton I think that's actually a good thing, maybe 
> it gets> > them hooked on the good stuff until they scream for more :)> > 
> although hybrids are not really efficient it's a great way to expose> > 
> electric drive.> > the EV grin is more addictive than crack :)> >> >!
  Dan> >> > Ben wrote:> > > A little harsh? :) Really, I was curious about 
those motors as well -> > > the new Highlander hybrid has a 165HP, 247 lb-ft 
electric, plus 4WD> > > models have an additional rear motor -- I can't find 
the specs on it> > > now, but I seem to remember it was around 68HP.> > >> > > 
I dug around ebay looking, but didn't find any used parts for sale. I> > > 
haven't called a dealership for parts prices because with what they> > > like 
to charge usually for parts, you'd probably be better off buying> > > a Seimens 
(etc) AC drive system.> > >> > > Interesting tidbit - I see in reviews of the 
2008 Highlander that they> > > offer an "EV Button" that allows 1 mile of 25mph 
electric-only> > > driving. Neat, but a little .. short. I half wonder if it 
isn't partly> > > psychological - can't have them thinking batteries can take 
you> > > further or faster than that - but it could also be a duty cycle or 
RPM> > > issue with the motors.> > >> > > On 10/31/07, Dan !
 Frederiksen <[EMAIL PROTECTED]> wrote:> > >> > >> > >> !
 further,
 as I've stated before, why not look into what motors the> > >> several 
available hybrids use today? once in a consumer mass production> > >> 
environment the prices tend to be much more reasonable. I was at a car> > >> 
show the other day where I saw the very nice Lexus LS600h which although> > >> 
still a mainly gas hybrid, the salesman claimed 530Nm torque on the> > >> 
electric motors alone. sure a lexus part could be expensive but maybe> > >> 
someone could look into spare parts cost of some of the more mainstream> > >> 
SUV hybrids in USA. some specs and a price. would it kill someone is USA> > >> 
to do that? : )> > >> is it an EV developers list or a rest home> > >>> > >> 
Dan> > >>> > >> > > _______________________________________________> > > For 
subscription options, see> > > http://lists.sjsu.edu/mailman/listinfo/ev> > >> 
> >> >> > _______________________________________________> > For subscription 
options, see> > http://lists.sjsu.edu/mailman/listinfo/ev> >> > > -- > Tr!
 avis Gintz> 1986 Honda VFR AC conversion> Http://blog.evfr.net/> > 
_______________________________________________> For subscription options, see> 
http://lists.sjsu.edu/mailman/listinfo/ev
> _________________________________________________________________
> Windows Live Hotmail and Microsoft Office Outlook ? together at last. Get it 
> now.
> http://office.microsoft.com/en-us/outlook/HA102225181033.aspx?pid=CL100626971033
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>


-- 
Travis Gintz
1986 Honda VFR AC conversion
Http://blog.evfr.net/



------------------------------

Message: 4
Date: Fri, 02 Nov 2007 11:13:15 -0600
From: Bill Dennis <[EMAIL PROTECTED]>
Subject: [EVDL] So Close
To: Electric Vehicle Discussion List <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

I'm getting so close to having my conversion finished now that I can 
almost taste it (oh, no, wait--that was the axle grease that just 
dropped into mouth).  Anyway, I'm at the point of mounting all the 
contactors, shunts, etc. onto a board and wiring them up.  Components 
will be mounted on a 15-inch x 15-inch (38-cm x 38-cm) board.  I've 
drawn a mockup of the components to scale on the board, with the wiring 
laid out.  For anyone who's interested in looking (or pointing out 
errors), the URL is:  http://tinyurl.com/yql2qt

The left side of the picture shows the control wiring.  The right side 
shows the same components with the traction wiring.

Should work as follows:

1)  When you stick the key into the ignition, a relay closes which 
powers up a 48V power supply, closing the negative contactor
2)  When you turn the key to Accessory position, the pre-charge relay 
closes, precharging the 1231C capacitors
3)  When you turn the key to the On position, power is supplied to the 
pot-box
4)  When you step on the accelerator, the pot-box microswitch closes, 
supplying power to the positive contactor and KSI relay.

Thanks.

Bill Dennis



------------------------------

Message: 5
Date: Fri,  2 Nov 2007 12:24:20 -0500 (CDT)
From: <[EMAIL PROTECTED]>
Subject: [EVDL] Collegiate Electric Vehicle Design Competition
To: Electric Vehicle Discussion List <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=us-ascii

Hello,

Is anyone aware of any Electric Vehicle Design Competitions? I'm part of a 
group of students at the University of Illinois @ Urbana-Champaign and we're 
looking for a competition to participate in only so we can get the necessary 
funding for our project. We're using Li-ion batteries from ThunderSky, A 
donated and modified variable frequency drive from Yaskawa for our AC induction 
motor, and right now we're involved in the design of our own microcontroller 
that utilizes as PSoC from Cypress semiconductor, a manual transmission 
contoller(because we're not ripping out the tranny), and we're experimenting 
with our own charging/battery management system. Let me emphasize that this is 
a student project and I don't expect anything to work. Any thoughts? I'm still 
browsing the web...

Thanks,

- Rey



------------------------------

Message: 6
Date: Fri, 2 Nov 2007 10:02:46 -0800
From: "Tehben Dean" <[EMAIL PROTECTED]>
Subject: Re: [EVDL] Fwd: 3 pole circuit breaker
To: "Electric Vehicle Discussion List" <ev@lists.sjsu.edu>
Message-ID:
        <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1

I decided to get some of these:

Airpax Part Number JLM-1-1RLS5 30140-250
125 Volt DC Circuit Breaker
Trip Amps 313
Hold Amps 250
Delay 53 Amps

and put three of them in series with all the handles ganged together
so if one trips all three are opened.
This will bring the voltage rating to 375v.

Cheers,
Tehben



On 11/2/07, Travis Gintz <[EMAIL PROTECTED]> wrote:
> I forwarded this to my PE (professional engineer) buddy, who
> specializes in High voltage and Power. This was his reply. I'd tend to
> be on his side with this....
>
> ---------- Forwarded message ----------
> From: Mark
> Date: Nov 2, 2007 10:04 AM
> Subject: RE: 3 pole circuit breaker
>
>
>
> Travis you are correct.  You can not series the two poles together to
> get a higher voltage rating nor can you series contacts on a thermomag
> breaker for higher current rating.   In the controls world you can
> series two contacts on a relay for higher current but you can not do
> that on a thermo mag circuit breaker.
>
>
>
> >
> > ----- Original Message -----
> > From: "Tehben Dean" <[EMAIL PROTECTED]>
> > To: "EV mail list" <ev@lists.sjsu.edu>
> > Sent: Wednesday, October 31, 2007 2:22 PM
> > Subject: [EVDL] 3 pole circuit breaker
> >
> >
> > > I am going to have a 312v (more when fully charged) system that is
> > > capable of drawing around 300amps.
> > > So my question is can I use a Square D I-Line thermo-magnetic 3 pole
>
> > > circuit breaker rated 350amps at 600v AC or 250v DC and wire it up
> > > so that 2 of the poles are in series to increase it's rated voltage?
> > >
> > > Thanks,
> > > --
> > > Tehben
> > > '90 Toyota 4x4 Pickup
> > > 'hElix EV'
> > > Website: www.helixev.com
> > > evalbum: http://www.austinev.org/evalbum/1225
>
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>


-- 
Tehben
'90 Toyota 4x4 Pickup
'hElix EV'
Website: www.helixev.com
evalbum: http://www.austinev.org/evalbum/1225



------------------------------

Message: 7
Date: Fri, 02 Nov 2007 11:26:11 -0700
From: john fisher <[EMAIL PROTECTED]>
Subject: Re: [EVDL] Circuit racing and continuous duty
To: Electric Vehicle Discussion List <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

I believe Bill Dube ( correct me if I am wrong Bill) ran BEV 4wheelers in the 
Pike's Peak hillclimb. Maybe it was 
somebody else?
It's pretty short, shorter than an oval or road-race, but measured in minutes, 
not seconds like the drags.
John

lyle sloan wrote:
> Please dont forget about the FIA alternative energies
> cup.
> 
> Here is a vid link of last years races in Italy (vid
> is in Italian).
> http://electricmotornews.lulop.com/player.php/7134/01
> 
> 
> 
> --- Tom Parker wrote:
> 
>> On Mon, 2007-10-29 at 13:12 -0400, ProEV wrote:
>>>> I'm wondering how suitable the available EV
>> technology is for circuit
>>>> racing?



------------------------------

Message: 8
Date: Fri, 2 Nov 2007 12:10:49 -0700 (MST)
From: "Peter VanDerWal" <[EMAIL PROTECTED]>
Subject: Re: [EVDL] Collegiate Electric Vehicle Design Competition
To: "Electric Vehicle Discussion List" <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain;charset=iso-8859-1

You could aways start your own competition...someone has to start them.

> Hello,
>
> Is anyone aware of any Electric Vehicle Design Competitions? I'm part of a
> group of students at the University of Illinois @ Urbana-Champaign and
> we're looking for a competition to participate in only so we can get the
> necessary funding for our project. We're using Li-ion batteries from
> ThunderSky, A donated and modified variable frequency drive from Yaskawa
> for our AC induction motor, and right now we're involved in the design of
> our own microcontroller that utilizes as PSoC from Cypress semiconductor,
> a manual transmission contoller(because we're not ripping out the tranny),
> and we're experimenting with our own charging/battery management system.
> Let me emphasize that this is a student project and I don't expect
> anything to work. Any thoughts? I'm still browsing the web...
>
> Thanks,
>
> - Rey
>
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>


-- 
If you send email to me, or the EVDL, that has > 4 lines of legalistic
junk at the end; then you are specifically authorizing me to do whatever I
wish with the message.  By posting the message you agree that your long
legalistic signature is void.



------------------------------

Message: 9
Date: Fri, 2 Nov 2007 11:35:43 -0700
From: "Travis Gintz" <[EMAIL PROTECTED]>
Subject: Re: [EVDL] Fwd: 3 pole circuit breaker
To: "Electric Vehicle Discussion List" <ev@lists.sjsu.edu>
Message-ID:
        <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1

Go for it, but It won't bring the voltage rating to 375V. Reread my
email from a PE, he reviewed this with two other EE's. Its come up
before with customers trying to shortcut and cut costs. The contacts
MUST be rated for the voltage you need. Because the voltage potential
from one side of the contacts to the other is still 375V.

I saw how you posted on several groups the same question. Which is Why
I said something. Reread what he said:

"...You can not series the two poles together to
get a higher voltage rating nor can you series contacts on a thermomag
breaker for higher current rating.   In the controls world you can
series two contacts on a relay for higher current but you can not do
that on a thermo mag circuit breaker."

Why don't you call the manufacturer and ask. I'd believe them and a
couple of degreed PE's over some "self proclaimed professionals" on
the internet anyway.... Why ask for advice if you aren'g going to
follow it? It should only take 1% doubt to sway you. If you ignore it
just because its cheaper...fine.

I can see you're not being too safe....An engineer should ask himself,
is it safe? And if anyone raised a question as to whether it was safe
or not, they would immediately stop and verify from a manufacturer/NEC
code/UL etc. You are ignoring one person that is telling you that its
not safe. Where does that leave your project? Would you fly a plane
where they did this with the breaker going to the fuel pumps? HELL NO!

Others may have it working because the Contacts are derated a certain
percentage. What if its on the hairy edge... now you've got a
potential ticking time bomb.

Good luck,
Travis Gintz
BSEE Virginia Tech 2004
Leviton Manufacturing and Lighting Control Systems

On 11/2/07, Tehben Dean <[EMAIL PROTECTED]> wrote:
> I decided to get some of these:
>
> Airpax Part Number JLM-1-1RLS5 30140-250
> 125 Volt DC Circuit Breaker
> Trip Amps 313
> Hold Amps 250
> Delay 53 Amps
>
> and put three of them in series with all the handles ganged together
> so if one trips all three are opened.
> This will bring the voltage rating to 375v.
>
> Cheers,
> Tehben
>
>
>
> On 11/2/07, Travis Gintz <[EMAIL PROTECTED]> wrote:
> > I forwarded this to my PE (professional engineer) buddy, who
> > specializes in High voltage and Power. This was his reply. I'd tend to
> > be on his side with this....
> >
> > ---------- Forwarded message ----------
> > From: Mark
> > Date: Nov 2, 2007 10:04 AM
> > Subject: RE: 3 pole circuit breaker
> >
> >
> >
> > Travis you are correct.  You can not series the two poles together to
> > get a higher voltage rating nor can you series contacts on a thermomag
> > breaker for higher current rating.   In the controls world you can
> > series two contacts on a relay for higher current but you can not do
> > that on a thermo mag circuit breaker.
> >
> >
> >
> > >
> > > ----- Original Message -----
> > > From: "Tehben Dean" <[EMAIL PROTECTED]>
> > > To: "EV mail list" <ev@lists.sjsu.edu>
> > > Sent: Wednesday, October 31, 2007 2:22 PM
> > > Subject: [EVDL] 3 pole circuit breaker
> > >
> > >
> > > > I am going to have a 312v (more when fully charged) system that is
> > > > capable of drawing around 300amps.
> > > > So my question is can I use a Square D I-Line thermo-magnetic 3 pole
> >
> > > > circuit breaker rated 350amps at 600v AC or 250v DC and wire it up
> > > > so that 2 of the poles are in series to increase it's rated voltage?
> > > >
> > > > Thanks,
> > > > --
> > > > Tehben
> > > > '90 Toyota 4x4 Pickup
> > > > 'hElix EV'
> > > > Website: www.helixev.com
> > > > evalbum: http://www.austinev.org/evalbum/1225
> >
> > _______________________________________________
> > For subscription options, see
> > http://lists.sjsu.edu/mailman/listinfo/ev
> >
>
>
> --
> Tehben
> '90 Toyota 4x4 Pickup
> 'hElix EV'
> Website: www.helixev.com
> evalbum: http://www.austinev.org/evalbum/1225
>
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>


-- 
Travis Gintz
1986 Honda VFR AC conversion
Http://blog.evfr.net/



------------------------------

Message: 10
Date: Fri, 2 Nov 2007 13:41:06 -0500
From: "Pestka, Dennis J" <[EMAIL PROTECTED]>
Subject: Re: [EVDL] Dennis Berubes S10.
To: "Electric Vehicle Discussion List" <ev@lists.sjsu.edu>
Message-ID:
        <[EMAIL PROTECTED]>
Content-Type: text/plain;       charset="us-ascii"

I have seen a lot of the higher voltage cars have the typical NHRA
required disconnect switch on the back.
On a normal ICE Drag car, this is a 12 or 24 volt rated disconnect.
I was curious what the Dennis Berube, Shawn Lawless, John Wayland cars
were using with their 300V + systems.

Thanks;
Dennis 

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, September 26, 2007 8:35 PM
To: ev@lists.sjsu.edu
Subject: [EVDL] Dennis Berubes S10.

Rush from the Tucson Electric Vech. club did a great job explaining my
new 
S10 with pictures and captions.                 Thank You Very much,
Dennis 
Berube                                                        
http://teva2.com/berubes10.html   



------------------------------

Message: 11
Date: Fri, 2 Nov 2007 11:50:26 -0700
From: "Peter Gabrielsson" <[EMAIL PROTECTED]>
Subject: Re: [EVDL] Fwd: 3 pole circuit breaker
To: "Electric Vehicle Discussion List" <ev@lists.sjsu.edu>
Message-ID:
        <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1

You have yet to explain why it wouldn't work?

On Nov 2, 2007 11:35 AM, Travis Gintz <[EMAIL PROTECTED]> wrote:
> Go for it, but It won't bring the voltage rating to 375V. Reread my
> email from a PE, he reviewed this with two other EE's. Its come up
> before with customers trying to shortcut and cut costs. The contacts
> MUST be rated for the voltage you need. Because the voltage potential
> from one side of the contacts to the other is still 375V.
>
> I saw how you posted on several groups the same question. Which is Why
> I said something. Reread what he said:
>
> "...You can not series the two poles together to
> get a higher voltage rating nor can you series contacts on a thermomag
> breaker for higher current rating.   In the controls world you can
> series two contacts on a relay for higher current but you can not do
> that on a thermo mag circuit breaker."
>
> Why don't you call the manufacturer and ask. I'd believe them and a
> couple of degreed PE's over some "self proclaimed professionals" on
> the internet anyway.... Why ask for advice if you aren'g going to
> follow it? It should only take 1% doubt to sway you. If you ignore it
> just because its cheaper...fine.
>
> I can see you're not being too safe....An engineer should ask himself,
> is it safe? And if anyone raised a question as to whether it was safe
> or not, they would immediately stop and verify from a manufacturer/NEC
> code/UL etc. You are ignoring one person that is telling you that its
> not safe. Where does that leave your project? Would you fly a plane
> where they did this with the breaker going to the fuel pumps? HELL NO!
>
> Others may have it working because the Contacts are derated a certain
> percentage. What if its on the hairy edge... now you've got a
> potential ticking time bomb.
>
> Good luck,
> Travis Gintz
> BSEE Virginia Tech 2004
> Leviton Manufacturing and Lighting Control Systems
>
>
> On 11/2/07, Tehben Dean <[EMAIL PROTECTED]> wrote:
> > I decided to get some of these:
> >
> > Airpax Part Number JLM-1-1RLS5 30140-250
> > 125 Volt DC Circuit Breaker
> > Trip Amps 313
> > Hold Amps 250
> > Delay 53 Amps
> >
> > and put three of them in series with all the handles ganged together
> > so if one trips all three are opened.
> > This will bring the voltage rating to 375v.
> >
> > Cheers,
> > Tehben
> >
> >
> >
> > On 11/2/07, Travis Gintz <[EMAIL PROTECTED]> wrote:
> > > I forwarded this to my PE (professional engineer) buddy, who
> > > specializes in High voltage and Power. This was his reply. I'd tend to
> > > be on his side with this....
> > >
> > > ---------- Forwarded message ----------
> > > From: Mark
> > > Date: Nov 2, 2007 10:04 AM
> > > Subject: RE: 3 pole circuit breaker
> > >
> > >
> > >
> > > Travis you are correct.  You can not series the two poles together to
> > > get a higher voltage rating nor can you series contacts on a thermomag
> > > breaker for higher current rating.   In the controls world you can
> > > series two contacts on a relay for higher current but you can not do
> > > that on a thermo mag circuit breaker.
> > >
> > >
> > >
> > > >
> > > > ----- Original Message -----
> > > > From: "Tehben Dean" <[EMAIL PROTECTED]>
> > > > To: "EV mail list" <ev@lists.sjsu.edu>
> > > > Sent: Wednesday, October 31, 2007 2:22 PM
> > > > Subject: [EVDL] 3 pole circuit breaker
> > > >
> > > >
> > > > > I am going to have a 312v (more when fully charged) system that is
> > > > > capable of drawing around 300amps.
> > > > > So my question is can I use a Square D I-Line thermo-magnetic 3 pole
> > >
> > > > > circuit breaker rated 350amps at 600v AC or 250v DC and wire it up
> > > > > so that 2 of the poles are in series to increase it's rated voltage?
> > > > >
> > > > > Thanks,
> > > > > --
> > > > > Tehben
> > > > > '90 Toyota 4x4 Pickup
> > > > > 'hElix EV'
> > > > > Website: www.helixev.com
> > > > > evalbum: http://www.austinev.org/evalbum/1225
> > >
> > > _______________________________________________
> > > For subscription options, see
> > > http://lists.sjsu.edu/mailman/listinfo/ev
> > >
> >
> >
> > --
> > Tehben
> > '90 Toyota 4x4 Pickup
> > 'hElix EV'
> > Website: www.helixev.com
> > evalbum: http://www.austinev.org/evalbum/1225
> >
> > _______________________________________________
> > For subscription options, see
> > http://lists.sjsu.edu/mailman/listinfo/ev
> >
>
>
> --
> Travis Gintz
> 1986 Honda VFR AC conversion
> Http://blog.evfr.net/
>
> _______________________________________________
>
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>



-- 
www.electric-lemon.com



------------------------------

_______________________________________________
EV@lists.sjsu.edu
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev

End of EV Digest, Vol 4, Issue 6
********************************

Reply via email to