Searching \ for '[EE]: transient specs' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/index.htm?key=transient+specs
Search entire site for: 'transient specs'.

Exact match. Not showing close matches.
PICList Thread
'[EE]: transient specs'
2002\01\14@194234 by Lyle Killough

flavicon
face
Can anyone direct me to references on electrical transients for mobile
hydraulic equipment (i.e. 24V systems)?

I already have lots of info on 12V (automotive) transients!

For automotive systems, devices must be designed to withstand 24V for at
least 5 minutes.   Apparently, a 24V battery is used to jump 12V cars in
some instances.  Does anyone know if 48V is used to jump 24V systems?

Any help is much appreciated!

____________________________________________

Lyle Killough      spam_OUTlyleTakeThisOuTspamsuregripcontrols.com
____________________________________________

          Sure Grip Controls Inc.
            4 - 1413 McGill Road
           Kamloops, BC, V2C 6K7
                  Canada

             phone 250-374-2278
             fax   250-374-1099

____________________________________________

         http://www.suregripcontrols.com
____________________________________________

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.


2002\01\16@132954 by Peter L. Peres

picon face
> Can anyone direct me to references on electrical transients for mobile
> hydraulic equipment (i.e. 24V systems)?

No I can't but,

> I already have lots of info on 12V (automotive) transients!

ok

> For automotive systems, devices must be designed to withstand 24V for at
> least 5 minutes.   Apparently, a 24V battery is used to jump 12V cars in
> some instances.  Does anyone know if 48V is used to jump 24V systems?

Huh ? Imho you can jump a car with 24V only once (the last time). The same
is true with 24V probably. In my experience the strength of surges
increases with the square of the supply voltage. This is caused by
stronger inductive consumers being used on the higher voltage systems.

Peter

--
http://www.piclist.com hint: To leave the PICList
.....piclist-unsubscribe-requestKILLspamspam@spam@mitvma.mit.edu


2002\01\16@172918 by Lyle Killough

flavicon
face
> Huh ? Imho you can jump a car with 24V only once (the last
> time).

Strange, but true.  I have seen lots of reference to it (eg
http://www.littelfuse.com/PDFs/AppNotes/an9312.pdf -good description of
automotive transients and other electrical insults like 24V jump starts)
I would NEVER attempt to jump start my rusty 85 Tercel with 24V - I
value it more than that!

IS0 7637 deals with automotive transients, but I do not have a full copy
of it.  They do discuss on-highway 24V vehicles (like transport trucks),
but I was hoping to find something which is a bit more pertinent to
off-highway heavy equipment (like skidders, excavators, bulldozers,
tractors etc.)

Does anyone know of a web site with such a thing as a web site with
downloadable ISO standards?  I am far from any sort of decent technical
library, and the local college, although it teaches HD mechanics and
electronics tech programs, does not have any such references.

Any help is very much appreciated!

Thanks, Lyle

--
http://www.piclist.com hint: To leave the PICList
piclist-unsubscribe-requestspamKILLspammitvma.mit.edu


2002\01\16@173949 by David VanHorn

flavicon
face
At 02:39 PM 1/16/02 -0800, Lyle Killough wrote:
> > Huh ? Imho you can jump a car with 24V only once (the last
> > time).
>
>Strange, but true.  I have seen lots of reference to it (eg
>http://www.littelfuse.com/PDFs/AppNotes/an9312.pdf -good description of
>automotive transients and other electrical insults like 24V jump starts)
>I would NEVER attempt to jump start my rusty 85 Tercel with 24V - I
>value it more than that!

Just wait till you see the new 48V batteries coming out!
I expect many incidents where Joe SixPack decides that the funny cable ends
are just a gimmick to make them more expensive, so with his handy
leatherman tool and a roll of duct-tape....

--
http://www.piclist.com hint: To leave the PICList
.....piclist-unsubscribe-requestKILLspamspam.....mitvma.mit.edu


2002\01\16@181950 by Dwayne Reid

flavicon
face
>
>Just wait till you see the new 48V batteries coming out!
>I expect many incidents where Joe SixPack decides that the funny cable ends
>are just a gimmick to make them more expensive, so with his handy
>leatherman tool and a roll of duct-tape....

Actually, they are 42V - the equivalent of 3 - 12V batteries in
series.  But I agree with you - I expect a LOT of fun when Joe gets his
hands on them and even more fun when he calls his lawyer (You Honor, the
defendant DELIBERATELY set out to harm my client by using a non-standard
battery voltage).

dwayne



Dwayne Reid   <EraseMEdwaynerspam_OUTspamTakeThisOuTplanet.eon.net>
Trinity Electronics Systems Ltd    Edmonton, AB, CANADA
(780) 489-3199 voice          (780) 487-6397 fax

Celebrating 18 years of Engineering Innovation (1984 - 2002)

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Do NOT send unsolicited commercial email to this email address.
This message neither grants consent to receive unsolicited
commercial email nor is intended to solicit commercial email.

--
http://www.piclist.com hint: To leave the PICList
piclist-unsubscribe-requestspamspam_OUTmitvma.mit.edu


2002\01\16@204712 by Jon Baker

flavicon
face
> Just wait till you see the new 48V batteries coming out!
> I expect many incidents where Joe SixPack decides that the funny cable
ends
> are just a gimmick to make them more expensive, so with his handy
> leatherman tool and a roll of duct-tape....

Completely off topic, but funny anyway:

Not so funny.. I worked in a petrol ( aka gas for the non UK folk ) station
and a guy came in with a rental car to fill up.. He found out that the pump
hose didnt fit in the gas tank so he very carefully filled a 5 gallon
container from the pump, then proceeded to fill his tank from the container.
He came in, paid, started his engine.. and drove off.. He got about as far
as the next pump before his engine stopped. He came back inside and wanted
to buy a hose- apparently to syphon the diesel from his tank. haha. I said
no way so he called the rental people to come out and rescue him.. needless
to say they weren't too happy about it :) I guess they really do make things
the way they do to stop you doing stupid stuff like that, but like someone's
sig on this list says with the douglas adams quote..  we often underestimate
the calliber of idiots there are around.

--
Jon Baker

--
http://www.piclist.com hint: To leave the PICList
@spam@piclist-unsubscribe-requestKILLspamspammitvma.mit.edu


2002\01\16@230740 by Tim McDonough

flavicon
face
> Strange, but true.  I have seen lots of reference to it (eg
> http://www.littelfuse.com/PDFs/AppNotes/an9312.pdf -good description
of
> automotive transients and other electrical insults like 24V jump
starts)
> I would NEVER attempt to jump start my rusty 85 Tercel with 24V - I
> value it more than that!
>
> IS0 7637 deals with automotive transients, but I do not have a full
copy
> of it.  They do discuss on-highway 24V vehicles (like transport
trucks),
> but I was hoping to find something which is a bit more pertinent to
> off-highway heavy equipment (like skidders, excavators, bulldozers,
> tractors etc.)
>
> Does anyone know of a web site with such a thing as a web site with
> downloadable ISO standards?  I am far from any sort of decent
technical
> library, and the local college, although it teaches HD mechanics and
> electronics tech programs, does not have any such references.

The worst is construction equipment. Most of the time the people with
the dead battery don't own the equipment, they just need it started.
They'll try anything available, even portable welders if they think
it'll get them going.

I believe the SAE has a set of published specs for on and off highway
vehicle electrical systems.

Tim

--
http://www.piclist.com hint: To leave the PICList
KILLspampiclist-unsubscribe-requestKILLspamspammitvma.mit.edu


More... (looser matching)
- Last day of these posts
- In 2002 , 2003 only
- Today
- New search...