three‑phase power
/ˈθriː ˈfeɪz ˈpaʊər/ · three·phase·pow·er
noun
- A method of alternating‑current electricity generation, transmission, and distribution that uses three sinusoidal voltages of equal magnitude, each displaced by 120° in phase. The factory upgraded to three‑phase power to run its heavy‑duty motors more efficiently.
- The electrical supply provided by such a system, typically delivered to industrial or large‑commercial customers. Our building’s three‑phase power is supplied at 480 V line‑to‑line.
Synonyms
three‑phase electricitypolyphase powerthree‑phase ACthree‑phase supplytriphasic powerthree‑wire system
Antonyms
Did you know? Three‑phase power was pioneered by Nikola Tesla in the 1880s and quickly became the global standard because it delivers constant power with less material than single‑phase systems.