three-phase system
power supply
Also known as: three-phase circuit system
Quick Summary
A three-phase system is an electrical power supply that uses three alternating currents. These currents are out of phase with each other, meaning they reach their peak values at different times. Specifically, in a three-phase system, the currents differ in phase angle by 120°. This setup is common in industrial applications and is used in electric motors, such as induction motors and synchronous motors. The rotating magnetic field produced by these three-phase currents is fundamental to the operation of many electric motors.1234
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