So 6 groups magnetic wire coil in clock wise and 6 groups magnetic wire coil in counter-clock wise direction alternatively. For example 3 phase 60Hz 1770 RPM motor, so 4-poles in three phase a total 12 groups of magnetic wire coil. The windings of 3-phase motor are not in same direction. It certainly is not a "good" condition, though - the chance of a failure is significantly increased. This may or may not cause irrevocable damage to the motor and driven equipment - it depends on how much mechanical margin is built into the installation. Then switch the polarity on one phase and see the difference in the waveforms.) (To see this for yourself - plot the three phases and their sum on a single graph. If one phase has the polarity changed, then the magnetic field distribution within the motor winding becomes uneven, and the output torque will "pulse". NOTE: THIS IS NOT THE SAME AS CHANGING THE POLARITY OF A SINGLE PHASE. If two phases are connected incorrectly (L1 to M2 and L2 to M1, for example) - the motor will rotate opposite to the desired direction. For correct rotation, the phase sequence has to be correct (L1 to M1, L2 to M2, and 元 to M3 - where L refers to LINE and M to MOTOR phase).
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