High voltage AC transmission towers

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ITEM NAME: High voltage AC transmission towers
TYPE: High voltage AC transmission towers, Pylons, Transmission towers, towers, double circuits transmission tower, single circit transmission tower
SPECIFICATION: 10kV, 110kV, 220kV, 330kV, 500kV
STEEL MATERIAL: Q235,Q335,Q420
COATED: Hot dipped Galvanizied
BRAND: WT Power
ITEM NO.: High voltage AC transmission towers
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High voltage AC transmission towers


Three-phase electric power systems are used for high and extra-high voltage AC transmission lines (50kV and above). The pylons must therefore be designed to carry three (or multiples of three) conductors. The towers are usually steel lattices or trusses (wooden structures are used in Germany in exceptional cases) and the insulators are generally glass discs assembled in strings whose length is dependent on the line voltage and environmental conditions. One or two earth conductors (alternative term: ground conductors) for lightning protection are often added to the top of each pylon.

In some countries, pylons for high and extra-high voltage are usually designed to carry two or more electric circuits. For double circuit lines in Germany, the “Danube” towers or more rarely, the “fir tree” towers, are usually used. If a line is constructed using pylons designed to carry several circuits, it is not necessary to install all the circuits at the time of construction. Medium voltage circuits are often erected on the same pylons as 110 kV lines. Paralleling circuits of 380 kV, 220 kV and 110 kV-lines on the same pylons is common. Sometimes, especially with 110 kV-circuits, a parallel circuit carries traction lines for railway electrification.


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