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Power transmission towers are metal structures that hold transmission lines off the ground to transport energy from generating sources to substations. They vary in design and height, and must withstand environmental loads and keep transmission lines separate. Insulators prevent contact between conductors and the tower, and aluminum conductors can reduce the need for towers. However, they require land and may not be suitable for densely populated or historically preserved areas.
A power transmission tower is a structure that plays an important role in bulk energy transfer systems. The fundamental role of this structure is to safely and effectively house the transmission lines. Such a structure, which is usually made of a metal such as galvanized steel, may also be referred to as a truss.
Energy can be transported above or below the ground. Air travel is generally considered the best option because maintenance and repairs are easier and costs are lower. Air travel can usually be identified when you see electrical cables running between tall metal structures.
These wires are known as transmission lines or conductors. The metal structures that hold the transmission lines off the ground are power transmission towers. These structures help facilitate the transport of energy from the generating source to the substations where the energy is distributed.
Not every power transmission tower is built alike. They can vary in design and height. Variations are often influenced by factors such as weather conditions and the type of conductor. A power transmission tower must be able to withstand the loads of the environment in which it is located. It must also be able to effectively keep transmission lines separate.
If a person looks closely, they might notice that power transmission towers often have a different lattice. This is the design of the spaces crossed by the transmission wires. Failures can occur if conductors can touch or even get too close to each other. For this reason, a different lattice work is often required.
Closer observation should also reveal that the transmission cables never make direct contact with the power transmission tower. If conductors are allowed to contact this metal structure, electricity could use the structure as a vehicle to travel to earth, resulting in a hazardous situation. For this reason, transmission towers must be equipped with insulators that prevent this type of contact.
The type of conductor is one of the factors affecting the load because some conductors are heavy. Copper wire, for example, is a good conductor, but it is much heavier than aluminum wire, which can also be very efficient. If aluminum conductors are used instead of copper, it is likely that fewer power transmission towers will need to be erected, resulting in savings.
Power transmission towers are not suitable in all circumstances. These structures require land on which they can be placed. In densely populated areas, this may not be available, thus making the use of such facilities impossible. Power transmission towers can also reduce property value. In cases where there are plans to develop land in the future or when the land is historically preserved, the erection of such structures may be prohibited.
