Just a curiousity... Does anyone know what the "A" shaped piece of metal on the primary arm of these poles are for?





I'm guessing something about birds spreading there wings and going phase to phase...

http://www.hubbellpowersystems.com/powertest/literature_library/pdflib_outside_Plant.html

LK, can you limit that page down to a name?


Dnk....

Hmmmm, no. I looked through all the pole line stuff and nothing that even resembles those things is there.

-Hal

I have never seen anything like it but I will go woith your guess and say its to keep birds from landing and possibly bridging out those phases that are close together..
A.D

In the catalog, you can see all the cross arm hardware, the v brace appears to be bolted abpve the flat crossarm support, and bolted to the nearend of the crossarm, could be the crossarm, had some damage or is in need of replacement and this was used for temp support, the catalog has a complete pole line view on page 3

I vote for the bird theory. I see a lot of innovative solutions to that problem in areas where large raptors or scavanger birds roost on poles. It makes sense because it's only on the side where the lines are close together.

[This message has been edited by jraef (edited 01-25-2006).]

I've never seen a secondary line laid out horizontally like that.

Bird guards is right, IMHO. Most of the ones I've seen are on transmission lines, but they do make all sort of varmint guards for the lines.

In fact, if you look at the transformer in the first picture, the gray caps on the bushings are also insulated varmint guards, as well as the gray caps on the fuses.

My guess is this area is awash with squirrels and/or birds.

"I've never seen a secondary line laid out horizontally like that."

They are very common like that here.

Anyway Rndy, I did see them before on a post somewhere with someone asking the same thing. I can't remember where... I also can't remember if it were squirels or birds?

They're all over the place here, and they are for larger birds (Hawks, Crows, Falcons, Eagles...) In a 5 mile lineset I drive most every day they went from triangular to horizontal with these bird things; back and forth a number of times... Where there's a three phase airswitch bar (if that is even the right name...) I can understand, but is there an advantage to two of these per pole vs. the triangular pattern?

My Boss is from West Texas and calls them "Rapture" protection.

I tried to explain the basic differences between the "Rapture" and raptors.

So far, no luck

I am now guessing they are there to keep the elephants off the poles.....and apparently they are working just fine....


Dnk...

Quote:
"I am now guessing they are there to keep the elephants off the poles.....and apparently they are working just fine...."

LMAO!!

It could be "rapture". There is a blinding flash of light and a soul is on it's way to heaven.

Here is a link to an article in the Dec. 05 issue of Transmission and Distribution zine. http://tdworld.com/mag/power_birds_power_lines/



They are both perches and guards. As a perch it keeps the bird further away from the energized equipment, and as a guard, at least in the pic above, on the lower arm, it seems to discourage a bird from landing on the lower arm.



From the zine article mentioned above



[This message has been edited by rmiell (edited 02-08-2006).]

It's a bird warmer.

Come on guys. Its for the high leg..........
right?

Charlie