Energy transmission line poles, similar to lattice towers, are used for transmission of electric energy from the power plants to the transformer stations in proximity of the electric consumption areas or the distribution thereof from these stations to end-users.
These structures are designed and manufactured considering the parameters such as routes of the transmission / distribution lines, geographical, land and atmospheric conditions, line voltages, carrying capacity and intended use specified below.
- Suspension Poles: These are the poles that are only intended to carry the conductors and that are used in the linear routes or small angled corners, where the conductors are bound with a suspension insulator.
- Tension/Angle Poles: These are the poles that are intended to carry the line conductors and fix the same with a tension insulator and that are used in the linear route or corners.
- Crossing Poles: These are the poles that are specially designed for the locations, where a significant level of traffic prevails, such as highways, watercourses or railways or long distance river/sea crossings.
- Terminal/Dead End Poles: These are the poles that are used at the beginning or end of the lines for terminating the transmission line purposes.
Power T&D poles are manufactured in the polygonal types up to 500 kV and, delivered as galvanized and/or painted for the atmospheric corrosion resistance.