Old Conductor Properties

[davidbeach]

I'm looking for conductor properties for some late '30s or early '40s hollow copper conductors.

I have that the conductor is described as

350 kcmil Cu PH D 1319HSC2

I'm sure that at some point the 'kcmil' replaced an designation of MCM or it was 350,000 circular mils. All reports I have is that this is a hollow conductor.

I have the "Characteristics of Anaconda Hollow Copper Conductors (Anaconda Wire & Cable Company)" and "Characteristics of General Cable Type HH Hollow Copper Conductors (General Cable Corporation)" tables that are available in various sources and I can't match the supposed impedance of a line using this conductor.

For instance, there is a 17.30 mile line using this conductor, flat construction with 12 feet between conductors. The published impedance, in pu on 115kV and 100MVA bases, is

R1=0.02457
X1=0.10369
R0=0.06198
X0=0.35214

Using the Anaconda 378R1 design, and a triangle of equivalent spacing (how it would have been done by hand when the line was built), I get

R1=0.024187 98.44%
X1=0.101475 97.86%
R0=0.061579 99.35%
X0=0.349922 99.37%

When I calculate it using actual spacing, I get the same values for these parameters.

If I futz around with the parameters, I can get very close

R1=0.024567 99.99%
X1=0.103693 100%
R0=0.061958 99.96%
X0=0.35214 100%

But now I've got resistances and GMRs that don't match any of the conductor property tables I have.

Does anybody have other conductor property tables for any sort of hollow copper conductors besides the two I listed? Does anybody recognize the "PH D 1319HSC2" and have a way of converting that to a conductor specification that I might find on-line some where?

 

[7anoter4]

I don't know if it is useful:
1) I found the 3rd Edition of PENDER- DEL MAR from 1936 and
on page 14-163 I found these types of Hollow Cables:
P.D.C.P Hollow core cable
Anaconda I-Beam Cable
Type HH [Heddernheim] Cable
A.S.&W. Type Cable
2)The type of conductor Cu PH D 1319HSC2 I think may be Copper [Cu] Phosphorus [PH] Deoxidized [D] High-Residual phosphorus. [DHP-ASTM].
If the R1 resistance temperature is 25oC [77 F] than pure copper presents 0.1627 ohm/mile[350 MCM] that means total R1=17.3*0.1627= 2.81471 ohm.
As DHP copper has only 85% of pure copper resistance R1=2.81471/.85=3.311
Or in p.u.=3.311*100/115^2= 0.02504 approx.2% more than R1 in the opening post.

 

[rcdew]

David,

Can you tell me where to get the Characteristics of Hollow copper Anaconda Transmission conductor that you reference online?

 

[davidbeach]

I don't know about online. The T&D book has tables as does Anderson's Analysis of Faulted Power Systems.

 

[BJC]

You can get some of the charesterics by measuring a pice of it. Google up and contact the Hover Dam gift shop. I bought a 6" piece from them. It's not on their web site at the moment.
the cable was used in the 30s to connect Hover dam to LA. It has some problems sagging to much under load and hot desert sum.
It is not in use anywhere except the gift shop (if there3). WWII took care of the sag problem, the line was replaced and copper went to the war effort.
By the way why do you want to know the charesterics? It's used nowhere now except in homework problems?

 

[davidbeach]

Not true, it may not still be in use there, but it is still in use elsewhere.

 

[BJC]

Do you think it might be in the book with the Indian on the cover? Or what edition of the Transmission Data book are you lookin in? Mine is probably older than you. We had a proff who beat Circle-Bar-W out of them for everyone of his students. I am not a the home 40 but I can get someone to look.

 

[davidbeach]

5th edition of the T&D book, written by Westinghouse, printed by ABB. I'm sure the tables have been there for many editions.

 

[BJC]

Mines printed by Westinghouse- about 1950 or 64. I will have daughter check tonight.

 

[BJC]

Is this what you want?

 

[rcdew]

I actually need the sag and tension tables/info for an old 161kv line out in the Texas -Ok area. A consulting firm is designing a distribution line that will go under this t-line.The electrical data is in the 1944 T&D (brown) book and probably others. Thanks for everyones help on this matter. Bob Dew

 

[BJC]

Who started this thread and what are thy really looking for??

 

[davidbeach]

I was able to get the properties used by the line owner (we lease some of it) for the conductor. Never did see a data sheet for "350 kcmil Cu PH D 1319HSC2" but have my line data calculations completed.