For most motors, in the absence of special regulations, rotate in a clockwise direction, that is, after wiring according to the terminal mark of the motor, it should rotate in a clockwise direction when viewed from the motor shaft extension end; motors that are different from this requirement , should be in the motor order instructions for the necessary agreement.
For three-phase asynchronous motors, whether it is a star connection or a delta connection, as long as one terminal is kept still and the position of the other two phases is adjusted, the direction of the motor can be changed. However, as a manufacturer of the motor, it should ensure that the rotation direction of the motor meets the requirements before the motor leaves the factory, and cannot leave this problem to the customer.
The direction of rotation of the motor is one of the quality performance of the motor, and it is also an important inspection item in the process of national supervision and spot checks. Among the unqualified spot checks in 2021, many motor products were judged to be unqualified because the direction of rotation did not meet the requirements. Qualified, which reflects from a certain level that some motor manufacturers do not pay attention to the control of the motor rotation direction.
So how to solve the problem of the direction of rotation of the motor? For standard motor manufacturers, their electrical control technology is already in place, that is, according to the different distribution of windings and the relative position of the stator in the process of pressing into the frame, the wiring, binding and labeling of the lead wires of the motor windings have been completed. Make specific regulations to ensure the compliance and consistency of the motor rotation direction.
In order to ensure that the rotation direction of the motor meets the requirements when leaving the factory, necessary inspections should be carried out during the test of the motor. The premise of this inspection is to ensure the compliance of the power supply U, V and W. Based on this and the premise, the motor is approved. Correctness of rotation.
Post time: May-23-2023