What is the function of a potential transformer in a high voltage circuit?

The function of a potential transformer in a high voltage circuit is to reduce voltage for safety and measurement. Potential transformers step down high voltage levels to a lower, manageable voltage suitable for various applications, such as monitoring electrical systems and providing input for protective relays or metering devices. By doing this, they help ensure safety for personnel working with high voltage equipment and allow for accurate measurement of voltage levels without exposing personnel to dangerous conditions.

This stepping down process is crucial in both enabling equipment that operates at lower voltages to accurately read and measure voltage levels in high voltage systems and ensuring that those who are working with or maintaining electrical systems can do so without risking exposure to high voltage hazards. As a result, potential transformers play a vital role in the safe and effective operation of electrical grids and systems, delivering the required information while maintaining high standards of safety.