In some special cases, such as the case of only single-phase power supply, it is necessary to change the three-phase electricity to two-phase electricity. However, it is easy to start difficult, the output power is not enough and other fault phenomena, but also easy to cause motor heat, long time operation is easy to affect the service life of three-phase asynchronous motor.

       Three-phase asynchronous motor wiring modes areYType sum△Type two, three-phase to single-phase is also divided into these two ways. But we must first determine whether the three winding ends of the three-phase motor are correct. If the head and tail of the three-phase motor are confused, it will cause the motor to burn down after it is changed.

       If the terminal of the three-phase motor has not been removed, or the connected three-phase electric energy runs normally, it indicates that the terminal is correct. You can also directly look at the terminal number arrangement in the motor junction box, correctly arranged as follows (pay attention to the line mark) :

       YType connection, as follows:

       △Type connection, as follows:

       In theory,3KWfollowingThree-phase asynchronous motorAll can be changed to single-phase operation, but after the high-power three-phase motor is changed to single-phase motor, the power will decay a lot, the heat is more serious, and can not carry a relatively heavy load, so it is still recommended to change1.5KWThe following motor.

       Of course, if it needs to be changed1.5KWThe above motor is also possible, at this time we need to install a starting capacitor, and the starting capacitor generally takes the running capacitor2About twice that.

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