The three-phase asynchronous motor can not operate normally

A Y160L-4-15KW three-phase asynchronous motor, can not be normal operation failure analysis steps.

When a motor can not function properly, to repair it, must follow a certain step to check, that is, to have to do a few tests to find the root cause of the fault. After these tests, the repair staff will be able to determine whether the motor needs only minor repairs, or some or all of the winding need to rewind.

Check the steps:

(1) Check the motor parts of the situation, such as whether the end cap rupture, whether the twist shaft, contact with or without burning or broken.

(2) check the bearing situation, the shaft for shaking up and down, if the axis of some loose, that bearing is damaged. And then turn the rotor by hand to see if the rotor is running flexible. If the shaft rotation is not normal, indicating that the bearing part may be a problem, either due to the bending of the shaft or due to poor assembly caused. At this time regardless of its root cause, when the motor connected to the power, it is likely to cause the fuse blown.

(3) Check the internal wiring of the motor to see if there is a contact between the coil and the rotor and the stator. This test said the ground test.

(4) When the rotor is running, the motor can be connected to the power supply, the switch closed for several seconds. If there is a problem inside the motor, it is likely to make the fuse blown; winding smoke; slow rotation; issued a noise or motionless. This phenomenon often indicates that the winding has a problem or has been burned. In case of this, remove the end cap and carefully check the parts of the motor winding. If the winding burns serious, from the winding surface can be judged out.

After the above steps to check, basically can determine the fault where the part. And then the part of the further inspection, you can find the location of the fault, for the corresponding repair.