Question

How you can reverse the direction of three phase induction motor.

Answer 1

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Winding in 3 phase motor, when activated with the supply of 3 steps, the rotating magnetic field is produced in the rotor area of ​​the motor.

Swaping phase A along with phase B re-orders so that the flows rotate in the opposite direction.

Swapping B is very similar to C, which swaps with A. Think of it as a triangle with the corners of A, B and C. If you swap the two corners and follow A, B and C, then you will go and swap two more corners in the direction directed and you are back to the original rotation.

This is what it looks like. The black arrow is the flow produced by three phase windings: -

Obviously, if the yellow phase is changed to blue phase then rotation will be the opposite.

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