P&B relay mounting

[Mike Beem]

I have a KTA ceramic heater kit I bought from another EV'r, after going one
winter without a defroster...and am now installing. I would like to mount
the relay horizontally, if possible, to make it fit the best space
available. It looks just like the one Dan used in his Suzuki; there is a
photo here:
http://www.envirokarma.org/ev/gallery/090301_final_assy00b.htm
I can't find a data sheet listing for this relay (P&B 0017T is all I see on
it)
Any good guidance from those who know?
Thanks!
Michael B
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[Roland Wiench]

I am using the TYCO Kilovac Lev200 Series contactor that I got from EV
Source for my heating system and turning on the bank of CD-CD converters.
Can mounted in any direction and is completely seal.  See specs in there
data sheets.

TYCO is a large industrial company that we use in our electrical and pumps
for heating.  You install it and forget about it.

For power you want contactors, for controls you use relays.  I have one TYCO
glass enclosed 3-pole double throw relay that switches 180 vdc @ 1 amp that
now has been running since 1976 when it was first was install.

Roland


----- Original Message -----
From: "Mike Beem" <[hidden email]>
To: "Electric Vehicle Discussion List" <[hidden email]>
Sent: Friday, September 21, 2012 3:22 PM
Subject: [EVDL] P&B relay mounting

> I have a KTA ceramic heater kit I bought from another EV'r, after going
> one
> winter without a defroster...and am now installing. I would like to mount
> the relay horizontally, if possible, to make it fit the best space
> available. It looks just like the one Dan used in his Suzuki; there is a
> photo here:
> http://www.envirokarma.org/ev/gallery/090301_final_assy00b.htm
> I can't find a data sheet listing for this relay (P&B 0017T is all I see
> on
> it)
> Any good guidance from those who know?
> Thanks!
> Michael B
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[Martin WINLOW]

On 21 Sep 2012, at 22:22, Mike Beem wrote:

> I have a KTA ceramic heater kit I bought from another EV'r, after going one
> winter without a defroster...and am now installing. I would like to mount
> the relay horizontally, if possible, to make it fit the best space
> available. It looks just like the one Dan used in his Suzuki; there is a
> photo here:
> http://www.envirokarma.org/ev/gallery/090301_final_assy00b.htm
> I can't find a data sheet listing for this relay (P&B 0017T is all I see on
> it)
> Any good guidance from those who know?
> Thanks!
> Michael B
>

Hi,

envirokarma was not responding when I tried it.

I suggest you contact Potter & Brumfield at http://relays.te.com and send them a picture of your relay.  They may be able to find a datasheet.

That said, they are pretty straight forward.  The 2 big connectors are for the load and the two small ones are for the coil.  If there is no diode fitted to the coil then polarity is irrelevant.

Regards, Martin Winlow
Herts, UK
http://www.evalbum.com/2092
www.winlow.co.uk



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[John O'Connor]

If the question is about wiring the snubber circuit I can send you a scan of the wiring diagram I have from KTA.

I thought the question was about mounting on a vertical surface. My instructions don't mention anything about that.

John

On Sep 22, 2012, at 2:50 AM, Martin WINLOW <[hidden email]> wrote:

>
> On 21 Sep 2012, at 22:22, Mike Beem wrote:
>
>> I have a KTA ceramic heater kit I bought from another EV'r, after going one
>> winter without a defroster...and am now installing. I would like to mount
>> the relay horizontally, if possible, to make it fit the best space
>> available. It looks just like the one Dan used in his Suzuki; there is a
>> photo here:
>> http://www.envirokarma.org/ev/gallery/090301_final_assy00b.htm
>> I can't find a data sheet listing for this relay (P&B 0017T is all I see on
>> it)
>> Any good guidance from those who know?
>> Thanks!
>> Michael B
>
> Hi,
>
> envirokarma was not responding when I tried it.
>
> I suggest you contact Potter & Brumfield at http://relays.te.com and send them a picture of your relay.  They may be able to find a datasheet.
>
> That said, they are pretty straight forward.  The 2 big connectors are for the load and the two small ones are for the coil.  If there is no diode fitted to the coil then polarity is irrelevant.
>
> Regards, Martin Winlow
> Herts, UK
> http://www.evalbum.com/2092
> www.winlow.co.uk
>
>
>
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[Mike Beem]

The original question was ONLY about the mounting orientation...maybe I put
in TooMuchInformation....
Michael B

On Fri, Sep 21, 2012 at 11:50 PM, Martin WINLOW <[hidden email]> wrote:

>
> On 21 Sep 2012, at 22:22, Mike Beem wrote:
>
> > I have a KTA ceramic heater kit I bought from another EV'r, after going
> one
> > winter without a defroster...and am now installing. I would like to mount
> > the relay horizontally, if possible, to make it fit the best space
> > available. It looks just like the one Dan used in his Suzuki; there is a
> > photo here:
> > http://www.envirokarma.org/ev/gallery/090301_final_assy00b.htm
> > I can't find a data sheet listing for this relay (P&B 0017T is all I see
> on
> > it)
> > Any good guidance from those who know?
> > Thanks!
> > Michael B
> >
>
>

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[Roger Stockton]

Mike Beem wrote:

> The original question was ONLY about the mounting orientation...maybe I
> put in TooMuchInformation....

This style of open-frame P&B relay is almost certainly one of their PRD models:

<http://documents.tycoelectronics.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=1308242_PRD&DocType=DS&DocLang=EN>

(Notice in the picture at the top of the datasheet where the markings are; if the picture you referenced is of your relay/box, perhaps you could not see the markings due to the way it is mounted?)

There is no mention in the datasheet (linked above) of any specific mounting orientation requirements or limitations.

I believe you are safe mounting this horizontally (as if sitting on a tabletop) or vertically (on a bulkhead/wall).  I know it can be safely used oriented as if sitting on a tabletop.

If possible, you might want to ensure that it is mounted so the contacts are higher than the base (ie don't mount it upside down under a shelf), and if mounted on a bulkhead/wall, orient it so the contacts are at the top.

Cheers,

Roger.


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[Lee Hart]

Mike Beem wrote:
> I have a KTA ceramic heater kit I bought from another EV'r, after going one
> winter without a defroster...and am now installing. I would like to mount
> the relay horizontally, if possible, to make it fit the best space
> available. It looks just like the one Dan used in his Suzuki; there is a
> photo here:
> http://www.envirokarma.org/ev/gallery/090301_final_assy00b.htm
> I can't find a data sheet listing for this relay (P&B 0017T is all I see on
> it). Any good guidance from those who know?

This is a Potter & Brumfield PRD-7DH0-12 or possibly PRD-7DJ0-12 relay.
The contact is rated for 125vdc at 20 amps. The blowout magnet can be
seen at the left side between the contacts. The relay is not position
sensitive; it can be mounted in any position.

The contact is marked with a "+" and "-". It should be wired so the
current flows from + to -. For a heater, that means the + goes to the
battery, and - to the heater load.

The coil is rated for 12vdc. It should measure about 71 ohms, and draws
about 170ma at 12 volts. It does not come with a diode across the coil.
It would be best not to use a diode, but instead a bilateral zener diode
rated at about 24-36 volts. This allows the contact to open faster,
reducing arcing and extending life.
--
Results! Why man, I have gotten a lot of results. I know several
thousand things that won't work. -- Thomas A. Edison
--
Lee A. Hart http://www.sunrise-ev.com/LeesEVs [hidden email]

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[Mike Beem]

Thanks everybody, for answering my question on this; The magnet on the
relay is almost 4 inches high, and my clearance to ferrous metal with it
(the magnet) in the vertical position would be too close for comfort. I was
remembering the discussion about using large circuit breakers as safety
pack interrupt and the mounting orientation, and just wanted to be sure I
wasn't setting my system up to fail.
I never would have been able to start driving electric without the
knowledge and experience that you (y'all) share so generously.
Looking forward to being warmer this winter!
Michael B

On Sat, Sep 22, 2012 at 1:47 PM, Lee Hart <[hidden email]> wrote:

> Mike Beem wrote:
> > I have a KTA ceramic heater kit I bought from another EV'r, after going
> one
> > winter without a defroster...and am now installing. I would like to mount
> > the relay horizontally, if possible, to make it fit the best space
> > available. It looks just like the one Dan used in his Suzuki; there is a
> > photo here:
> > http://www.envirokarma.org/ev/gallery/090301_final_assy00b.htm
> > I can't find a data sheet listing for this relay (P&B 0017T is all I see
> on
> > it). Any good guidance from those who know?
>
> This is a Potter & Brumfield PRD-7DH0-12 or possibly PRD-7DJ0-12 relay.
> The contact is rated for 125vdc at 20 amps. The blowout magnet can be
> seen at the left side between the contacts. The relay is not position
> sensitive; it can be mounted in any position.
>
> The contact is marked with a "+" and "-". It should be wired so the
> current flows from + to -. For a heater, that means the + goes to the
> battery, and - to the heater load.
>
> The coil is rated for 12vdc. It should measure about 71 ohms, and draws
> about 170ma at 12 volts. It does not come with a diode across the coil.
> It would be best not to use a diode, but instead a bilateral zener diode
> rated at about 24-36 volts. This allows the contact to open faster,
> reducing arcing and extending life.
> --
> Results! Why man, I have gotten a lot of results. I know several
> thousand things that won't work. -- Thomas A. Edison
> --
> Lee A. Hart http://www.sunrise-ev.com/LeesEVs [hidden email]
>
> _______________________________________________
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>

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