Voltages in the range of 69,000 to 230,000 are classified as what type of voltages?

Voltages in the range of 69,000 to 230,000 volts are classified as High or Transmission voltages. This classification is significant within the context of electrical power systems because it pertains to the transmission of electricity over long distances.

High voltages are used primarily to reduce energy losses during transmission, which allows electricity to move efficiently from power generation sources to substations and ultimately to local distribution networks. By utilizing high voltages, the current in the transmission lines is reduced, leading to lower resistive losses according to the principles of electrical power transmission.

In contrast, lower voltage classifications, such as low distribution or medium sub-transmission, deal with voltages that are appropriate for local distribution and more localized applications, typically involving lower risk and less strenuous infrastructure requirements. Meanwhile, extra high voltages, which go beyond 230 kV, represent even higher levels of transmission that come with increased technical and operational challenges. Understanding these classifications not only helps in the construction and maintenance of electrical networks but also in ensuring safety regulations are adhered to when working with different voltage levels.