Transmission tower
A transmission tower or pylon (also known as an ironman in Australia and a hydro tower in parts of Canada) is a tall tower used for electric power transmission. It carries the electrical conductors (wires) of high-voltage overhead power lines. The tower is high for a safe distance for people, animals or things below the wires.
Most big transmission towers are lattice steel structures. Smaller ones may be wood, concrete or steel poles.
Types
Most transmission towers are built as suspension towers. They only hold up the wires, not pull them. Their insulators are used vertically.
Tension towers (also known as anchor towers) pull on the wires. Their insulators are used horizontally. They work as terminal towers at the end of a power line. They work as branch towers where power lines split and run in different directions.
Transposition towers are relatively rare. They allow the wires to change their position on the tower.
Transmission Tower Media
- 2014 Donau pylon Yorkshire.jpg
L12 LD30 (L12 low-height double-circuit 30° deviation) 400 kV transmission tower (“pylon”) no. 2TW078 outside Thirsk, North Yorkshire (54.23402°N 1.32210° W), with L12 D and D60 in the background
- HVDC Distance Pylon.jpg
HVDC distance tower near the Nelson River Bipole
- Strelasund-160324-103a.jpg
Typical T-shaped 110 kV tower from the former GDR
- Guyed Delta Transmission Tower.jpg
Guyed "Delta" transmission tower (a combination of guyed "V" and "Y") in Nevada
- Y-pylons.webp
Y-pylons high voltage power lines
- Kreuzungsmast.jpg
Branch pylon with a triangular shape
- New and old electricity pylons.jpg
Steel tube tower next to older lattice tower near Wagga Wagga, Australia
- Beton-Dreiebenenmast.jpg
A reinforced concrete pole in Germany
- Stockbridge damper-closeup.jpg
Stockbridge damper bolted to line close to the point of attachment to the tower. It prevents mechanical vibration building up in the line.
- Insulator string with arcing horns.jpg
Arcing horns on each side of a tension-type high-voltage insulator string, Stockbridge dampers on conductors
Related pages
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