Info on Western Electric Telephone Line Carbon Block Arrestor?

[Bob Shuman]

Looking for whatever information I can find (schematic, assembly drawing,
component listing, experts with knowledge of internals) on the following 40
or so year old component:

25 Line Carbon Lightning Arrestor/Protection #134A1A-25 that was
manufactured by Western Electric (manufacturing arm of the Bell System -
pre-AT&T divestiture) in the USA.

If anyone has information or can point me to a source for that information
it would be very much appreciated.

Thanks in advance,

Bob S.

 

[Bob AZ]

Do a google search.
Bob AZ

 

[**THE-RFI-EMI-GUY**]

I remember the FCC Part 68 had details for a lot of devices. You might
check CFR47 Part 68

Looking for whatever information I can find (schematic, assembly drawing,
component listing, experts with knowledge of internals) on the following 40
or so year old component:

25 Line Carbon Lightning Arrestor/Protection #134A1A-25 that was
manufactured by Western Electric (manufacturing arm of the Bell System -
pre-AT&T divestiture) in the USA.

If anyone has information or can point me to a source for that information
it would be very much appreciated.

Thanks in advance,

Bob S.

--
Joe Leikhim K4SAT
"The RFI-EMI-GUY"

The Lost Deep Thoughts By: Jack Handey
Before a mad scientist goes mad, there's probably a time
when he's only partially mad. And this is the time when he's
going to throw his best parties.

 

[Don Bowey]

I remember the FCC Part 68 had details for a lot of devices. You might
check CFR47 Part 68

Hey, we're cuzzins. I was W7SAT in another lifetime.

He won't find the protectors in Part 68.

What he has is the device Telco cable pairs are permanently wired to, to
protect people and equipment from high voltage in the event of a lightning
strike or having a cable cross with AC power. I don't have any info left to
see what type it is; they came in many configurations..

It is also used at large customer premises for the same purpose, still as
telco equipment.

Don

 

[Bob Shuman]

Don, Yes this is exactly correct. It is a pre-wired carbon block assembly
that came with either a 6 foot or 12 foot cable and was used at commercial
customer premises for phone line lightning/surge protection. I know and
understand the basic function, but am looking for information on the
internal workings (what distance spark gap that breaks down under what
voltage and how quickly will it clamp and to what voltage through the carbon
block? What maximum current over what duration will it handle before it
fails? How much resistance is allowed in the ground path to work properly?
What gauge ground wire and maximum distance? ) An assembly drawing,
schematic, technical specifications, and such.

I've learned that it was manufacturer discontinued, some alternative
customer orderable end item (Comcode) numbers, the engineering control
location (Bell Labs, Whippany, NJ), the place of manufacture (Western
Electric, Baltimore Works - Long Gone), and the replacement (still active)
Lucent arrestor part number, but so far these have not led to any of the
desired info.

I've been given a lead on a microfilm number and have a friend looking into
Engineering Records to see if this is reproducible.

If anyone has other info please let me know. Thanks.

Bob

 

[**THE-RFI-EMI-GUY**]

Try this link below to a thread describing the wiring. Also CFR47 Part
68.306 may give an idea as to the voltage range. I think about 300 volts
is lower limit of these devices. They are troublesome. Several occasions
I have had phone lines with hum problems go unresolved until a
knowledgeable "phone man" replaced the cartridges.

www.mailarchive.ca/lists/comp.dcom.telecom.tech/2000-09/0046.html

Looking for whatever information I can find (schematic, assembly drawing,
component listing, experts with knowledge of internals) on the following 40
or so year old component:

25 Line Carbon Lightning Arrestor/Protection #134A1A-25 that was
manufactured by Western Electric (manufacturing arm of the Bell System -
pre-AT&T divestiture) in the USA.

If anyone has information or can point me to a source for that information
it would be very much appreciated.

Thanks in advance,

Bob S.

--
Joe Leikhim K4SAT
"The RFI-EMI-GUY"

The Lost Deep Thoughts By: Jack Handey
Before a mad scientist goes mad, there's probably a time
when he's only partially mad. And this is the time when he's
going to throw his best parties.

 

[**THE-RFI-EMI-GUY**]

Bob; You work at Lucent and can't get this info? No wonder my stock went
from $37 to $2.84!

Looking for whatever information I can find (schematic, assembly drawing,
component listing, experts with knowledge of internals) on the following 40
or so year old component:

25 Line Carbon Lightning Arrestor/Protection #134A1A-25 that was
manufactured by Western Electric (manufacturing arm of the Bell System -
pre-AT&T divestiture) in the USA.

If anyone has information or can point me to a source for that information
it would be very much appreciated.

Thanks in advance,

Bob S.

--
Joe Leikhim K4SAT
"The RFI-EMI-GUY"

The Lost Deep Thoughts By: Jack Handey
Before a mad scientist goes mad, there's probably a time
when he's only partially mad. And this is the time when he's
going to throw his best parties.

 

[Bob Shuman]

I have found info through internal sources, but there are a lot of people
out there in this newsgroup who know some stuff you can't find in archives.

So you bought "low" huh (at least compared to me...) But, I am one of the
few, the lucky, the proud ... who have managed to stay employed, so things
could have been a lot worse.

Thanks again.

Bob