Polyphase refers to electrical systems, circuits, or machines that operate on two or more alternating voltages of the same frequency but shifted in phase. The most common polyphase system is three-phase, which provides constant power transfer and allows for the design of simple, self-starting induction motors.
Heard on the job
The new industrial park requires a polyphase supply to run its heavy manufacturing equipment.
Also heard as
- multi-phase
Related terms
Polyphase circuit
An electrical network that carries multiple alternating currents with staggered phase angles.
Phase
A single distinct oscillating voltage or current in a multi-conductor electrical system.
Squirrel-cage motor
An AC induction motor featuring a rotor made of parallel conductive bars shorted by end rings.