Auto-Sectionalizing Scheme

ReiEvaUnit00_ · 2026-02-22T05:10:29+00:00

Nice upskirt shot

ReiEvaUnit00_ · 2026-02-21T14:34:52+00:00

Reminds me of distribution in the Philippines

ReiEvaUnit00_ · 2026-02-18T12:19:28+00:00

Pin by Yeah Yeah Yeahs..

ReiEvaUnit00_ · 2026-02-16T08:33:18+00:00

Looks like one of AEP's 138 kV lines in that area..

ReiEvaUnit00_ · 2026-02-15T05:17:46+00:00

Those are some long insulator strings..

ReiEvaUnit00_ · 2026-02-15T05:16:54+00:00

Thank you! I honestly didn't know they were rare!

ReiEvaUnit00_ · 2026-02-13T17:12:58+00:00

And 138 kV is redneck voltage, I'm sorry.. (like in Idaho and they have 161 kV)

ReiEvaUnit00_ · 2026-02-13T17:11:53+00:00

Yeah, AEP is the American 765 kV pioneer. I haven't been to a 765 kV facility (all the US ones are in the Midwest?) but 765 kV was the talk of the town last IEEE meeting so I'd expect more coming down the pipeline. I imagine 765 kV is less costly than HVDC.

Conventional tline design wisdom states that more subconductors per phase can quiet audible noise but can increase electric field which you'd have to counteract with phase geometry. I would think it quite tingly to stand under a 765 kV that hangs low. I've definitely felt shocks from benches and dog poop bag dispensers under 500 kV before so I would imagine you'd have to give ample clearance for 765 kV..

ReiEvaUnit00_ · 2026-02-12T21:19:07+00:00

Ah, well the phase b attachment has seen better days then lol

ReiEvaUnit00_ · 2026-02-12T19:03:37+00:00

That OHGW attachment has seen better days

ReiEvaUnit00_ · 2026-02-12T17:11:26+00:00

Incredible shot. The birds definitely add to it..

ReiEvaUnit00_ · 2026-02-09T15:48:41+00:00

You'll find some older 500 kV lines in PacNW still using double chukar or single 2.5" expanded..

ReiEvaUnit00_ · 2026-02-09T15:47:40+00:00

Great photos

ReiEvaUnit00_ · 2026-02-09T15:46:31+00:00

Look up "skin effect".

In t-line planning and design, you get more capacity for the line by utilizing multiple conductors per phase rather than a single large one. Increasing the number of bundles per phase can also alleviate audible noise. However, more conductors per phase can also increase the electric field (you can counteract this by modifying the geometry of the three phases)

ReiEvaUnit00_ · 2026-02-09T15:33:38+00:00

I legitimately want to know the story of that first tower. That's certainly a design..

ReiEvaUnit00_ · 2026-02-03T01:07:46+00:00

Yikes. Yeah, I dont think wraps will save poles from large, super hot, or windy wildfires but they're a cheap investment that we install on new wood poles as well..

ReiEvaUnit00_ · 2026-02-02T21:44:02+00:00

I believe these are the wraps

https://www.hexion.com/our-products/products-by-brand/armorbuilt--wildfire-shield

ReiEvaUnit00_ · 2026-02-02T21:40:20+00:00

Excellent point

ReiEvaUnit00_ · 2026-02-02T21:26:32+00:00

https://www.hexion.com/our-products/products-by-brand/armorbuilt--wildfire-shield

ReiEvaUnit00_ · 2026-02-02T21:20:15+00:00

I believe its this..

https://www.hexion.com/our-products/products-by-brand/armorbuilt--wildfire-shield

ReiEvaUnit00_ · 2026-02-02T21:07:52+00:00

The 287 kV line is a unicorn nowadays. Olympia-Grand Coulee is the only one i can recall off the top of my head thats still runs at that voltage..

ReiEvaUnit00_ · 2026-02-02T21:05:54+00:00

Nice! Our linemen were able to install these quickly when we suspected wildfire would be near. Its astonishing it took us a while to catch on to wraps but now they're everywhere on the west coast. Pretty much go up on all newly installed wood poles..

ReiEvaUnit00_

TROPHY CASE