How is high voltage defined in terms of voltage levels?

High voltage is generally defined as any voltage above 600 volts. This distinction is important for safety and regulatory measures within the electrical field. The definition varies globally, but in many contexts, particularly in industrial and utility applications, voltages exceeding 600 volts are categorized as high voltage due to the increased risks associated with such levels, including the potential for severe electric shock and other safety hazards.

For example, in certain standards and regulations, equipment designed to operate at high voltage must adhere to more stringent safety protocols to protect workers and the public. While lower voltages have specific limits and designations, the threshold of 600 volts signifies a significant increase in danger, thereby necessitating higher safety standards and awareness.

In the context of the other options, they do not accurately reflect the common standards for what constitutes high voltage. Options that specify voltages less than 600V or below 1000V do not meet the criteria established in most regulatory frameworks. Therefore, defining high voltage as anything above 600V is established and widely accepted in many regions.