Power Lines

Power Lines

Posted on 08/14/2013


Photo taken on August 13, 2013


See also...

Glass Insulators in Service Glass Insulators in Service



Keywords

2400V


Authorizations, license

Visible by: Everyone
All rights reserved

90 visits

Union-Pacific Railroad 2.4kV - Caldwell, ID

Union-Pacific Railroad 2.4kV - Caldwell, ID
Here's a nice old pole! Looks like the power primary (top arm) may have been changed from three-phase to ungrounded single phase, with the middle phase serving as a grounded shield wire. Both the outer (live) phases have lightning arresters on them.

David Budka, Johnvosh, André J.(Lineman80), Hungry4Power and 3 other people have particularly liked this photo


Comments
Matt Weldon
Matt Weldon
Nice shot, like the power glass on top of the 2300 volt lines. I know this UP Railroad line very well. I did some extensive insulator hunting all along this line from one end of Idaho to the next in 1999. Some of my best finds were Petticoat beehives in decent green colors and purple tint to off clear. Many CD 152 California insulators, and many more to name. I do have one shot that I took just north of Lava Hot Springs, Idaho of this same line that I will post sometimes with the California insulators on it. This is a basic pole line set up for the UP Railroad throughout the western states. Thanks for the memories!
4 years ago. Edited 4 years ago.
David Dahle
David Dahle
This is typical UPRR practice - the top arm is in the 2kV class; I thought it was 2400V but a collector I know in Omaha recently recovered a sign off a pole that was just wrecked out over there that showed it as 2900V. The pole just off to the left may be powering the 2kV line in a step-down / step-up arrangement. Anyhow, for the main run between signal locations, the top has 2 hots then as the transformer location is approached, the top wire (which is actually a shield wire) is added for 2 spans in either direction. First time I've seen glass on the 2kV circuit however!
4 years ago.
David Dahle
David Dahle
The glass on the 2kV circuit is 252 then the two middle arms are CD 163 and 168 (the latter seems to be supporting a second power circuit on the right end of the second arm - heavier wire) then the unused bottom arm has a typical mix of older railroad glass - 145, 147, and 154.
4 years ago.
Matt Weldon
Matt Weldon
When I hunted this line CD 252 Hemingrays were the only glass I saw on the top crossarm. On the next two crossarms for signaling and possibly second power circuit like David said were mostly CD 163 both Hemingray and Whitall Tatum, CD 168 Hemingray/D510s, also CD 167 Armstrongs were very common. On the possibly telephone via telegraph circuits on the lower crossarm a variety of stuff like Hemingray/ Petticoat beehives in many different colors. The normal really common stuff, to many to mention. CD 152 California in sage green, smoke to light purple. I didn't find any Brookfield stuff along this line. Many sections along this line the wires were still on the telephone circuits on the lower crossarm.
4 years ago.