Transmission Lines are high voltage; they are measured between how many kilovolts (kV)?

Transmission Lines are high voltage; they are measured between how many kilovolts (kV)?

• A. 60-500 kV
• B. 10-100 kV
• C. 1-10 kV
• D. 1000-2000 kV

Answer: (A)

Transmission lines carry large amounts of electrical power, so they are operated at high voltages to keep currents lower and minimize losses over long distances. In practice, bulk power transmission uses voltages in the tens to hundreds of kilovolts. The range from about 60 kV up to 500 kV covers the typical high-voltage transmission levels used for regional and inter-regional lines. The other ranges correspond to different parts of the system: lower tens of kilovolts are used for distribution or subtransmission, 1–10 kV is common for distribution to end users, and 1000–2000 kV represents ultra-high or experimental contexts not standard for everyday transmission. So, the range 60–500 kV best fits typical transmission voltages.

Transmission lines carry large amounts of electrical power, so they are operated at high voltages to keep currents lower and minimize losses over long distances. In practice, bulk power transmission uses voltages in the tens to hundreds of kilovolts. The range from about 60 kV up to 500 kV covers the typical high-voltage transmission levels used for regional and inter-regional lines. The other ranges correspond to different parts of the system: lower tens of kilovolts are used for distribution or subtransmission, 1–10 kV is common for distribution to end users, and 1000–2000 kV represents ultra-high or experimental contexts not standard for everyday transmission. So, the range 60–500 kV best fits typical transmission voltages.