What voltage level is classified as high voltage (HV)?

High voltage (HV) is classified in different ranges based on various standards and regulatory guidelines. In many contexts, the classification begins at voltages above 34.5 kV. Specifically, this is where the designation of high voltage starts and extends up through other categories.

The range from 34.5 kV to 230 kV signifies a significant level of voltage that requires specific insulation and safety considerations due to the increased risks associated with handling these levels. Within this range, equipment is designed to operate efficiently and safely, adhering to regulations that govern electrical systems to ensure reliability and protection against electrical hazards.

When considering values above 230 kV, while still classified as high voltage, they often enter into the ultra-high voltage (UHV) category, which requires even more specialized systems and safety protocols. Understanding these classifications helps professionals design, operate, and maintain electrical transmission systems at varying levels of voltage, ensuring compliance with safety and operational standards.