Power Transmission Pole

Introduction to power transmission pole:

A tall pole like structure, which is used for the transmission of the electricity, is called the transmission pole. It is also called the transmission tower or electricity pylon. In the Australia it is known as the iron man and in Canada it is called the hydro tower. Let us discuss about the transmission pole and its structure.

Power Transmission through Pole

The steel usually makes the power transmission pole and it is used to support the overhead electrical wires which transmits the electric energy from the long distances. They are used in the high voltages AC and Dc currents. Transmission poles are also used in the railway traction. The transmission poles have different shapes and different sizes. The heights of the transmission poles lie between 15 metre to 55 metre according to the need. The maximum heights of the transmission poles are about 300 metre. Transmission poles are also made by the concrete or wood.

For the extra high voltages transmission, the tower must be designed to carry three conductors or the multiple of three conductors. These types of the transmission towers are usually made by the steel lattice and the insulators used are either porcelain discs or the glass.We can use the silicon rubber also as the insulating material in the transmission pole. In some of the countries, the transmission towers which are used for the high and extra-high voltage are generally designed as to carry two or more electric circuits. It is not compulsory that all the circuits should be installed at the same time. They can install as according to the need.

Conclusion for Power Transmission Pole

In case of the transmission of the high voltage direct current, we use the poles having one conductor on each side of the pole so that there is an equal strength of the pole. Steel tubes of good strength and concrete poles are use for the high voltage transmission of AC railway traction lines. In the railway traction line there are always two electrical circuits so they have four conductors.