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

Voltages ranging from 69,000 to 230,000 volts are classified as high or transmission voltages. This classification includes voltages used primarily for the transmission of electrical power over long distances, as they are essential for reducing energy loss due to resistance in the conductors. The use of such high voltages allows for efficient power transmission, which is critical in the management of electrical grids and the delivery of electricity from power plants to substations and ultimately to consumers.

In contrast, low voltages typically refer to voltages under 1,000 volts, and medium voltages generally range from 1,000 volts to about 35,000 volts. Extra high voltages exceed 230,000 volts, often going up to several hundred thousand volts, used in specific high-capacity transmission lines. Therefore, the range specified in the question fits into the category of high or transmission voltages, confirming that this classification is correct.