When you say power supply, you mean three-phase power transformer, right? Transformers can't compare with motors. The transformer is divided into primary side and secondary side, which input and output at the same time, and the two sides are inaccessible; The motor has no input and output. Its six terminals are all used for input, but an unreasonable connection can form a star and an angle. So there is no question of whether you can switch, only what form you need to connect. It should be noted that these six terminals should not be connected in disorder, but in sequence, otherwise it will cause a large starting current or even a short circuit.