What are the typical voltage levels used for electrical transmission lines?

2025-08-12

transmission lines are generally classified into different voltage levels depending on the distance and capacity requirements.

  • High Voltage (HV): Typically ranges from 110 kV to 230 kV. Used for regional transmission.

  • Extra-High Voltage (EHV): Ranges from 345 kV to 765 kV. Used for long-distance, bulk power transmission between major cities and regions.

  • Ultra-High Voltage (UHV): Voltages above 800 kV. This is the highest voltage class and is used for transmitting massive amounts of power over vast distances, often across countries or continents.

Why is electricity transmitted at such high voltages?Is it safe to live near high-voltage power lines?
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