Electricity pylon | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-06-28

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Transmission_tower


00:00:57 1 Naming
00:01:33 2 High voltage AC transmission towers
00:03:14 3 High voltage DC transmission towers
00:04:35 4 Railway traction line towers
00:05:19 5 Towers for different types of currents
00:06:55 6 Tower designs
00:07:04 6.1 Shape
00:07:19 6.1.1 One circuit
00:08:00 6.1.2 Two circuits
00:08:53 6.1.3 Four circuits
00:09:17 6.2 Support structures
00:10:11 6.3 Materials
00:10:19 6.3.1 Tubular steel
00:11:03 6.3.2 Lattice
00:12:10 6.3.3 Wood
00:13:09 6.3.4 Concrete
00:14:14 6.4 Special designs
00:17:22 7 Assembly
00:18:17 8 Markers
00:19:20 9 Tower functions
00:20:05 9.1 Cross arms and conductor arrangement
00:20:47 10 Other features
00:20:56 10.1 Insulators
00:21:29 10.2 Stockbridge dampers
00:22:03 10.3 Arcing horns
00:22:33 10.4 Physical security
00:23:13 11 Notable electricity transmission towers
00:23:33 12 See also



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SUMMARY
=======
A transmission tower or power tower (electricity pylon or electric pylon in the United Kingdom, parts of Canada and parts of Europe) is a tall structure, usually a steel lattice tower, used to support an overhead power line.
They are used in high-voltage AC and DC systems, and come in a wide variety of shapes and sizes. Typical height ranges from 15 to 55 m (49 to 180 ft), though the tallest are the 370 m (1,214 ft) towers of a 2,700 m (8,858 ft) span of Zhoushan Island Overhead Powerline Tie. In addition to steel, other materials may be used, including concrete and wood.
There are four major categories of transmission towers: suspension, terminal, tension, and transposition. Some transmission towers combine these basic functions. Transmission towers and their overhead power lines are often considered to be a form of visual pollution. Methods to reduce the visual effect include undergrounding.