Term List (PQR)


In connection with the method used to apply electric current to the stator winding, there is a concept about "phase".

The basic number of phases is the minimum odd number greater than 1, namely 3.
The three phases are respectively identified by symbols U, V, and W. Windings U, V, and W are arranged at equal intervals.

Other possible numbers of phases are two, four, and five that are used for stepping motors and other types of motor.

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