When the three-phase asynchronous motor is running, sometimes there will be faults such as uneven no-load current and large phase difference. Why do such faults occur? When such a fault occurs in the three-phase asynchronous motor, how should it be solved? Below, the editor will take you to understand the causes and solutions of the unbalanced no-load current of the three-phase asynchronous motor.
1. When the power supply voltage of the three-phase asynchronous motor is unbalanced, we need to measure the power supply voltage of the motor at this time, find the cause, and eliminate the fault.
2. When the head and tail ends of the three-phase asynchronous motor winding are connected incorrectly: the solution is to find out the head and tail ends, and then restart the motor test after correction.
3. When the three-phase asynchronous motor is rewound or the number of turns of the three-phase winding is uneven: the solution is to rewind the winding and correct it.
4. When the winding of the three-phase asynchronous motor is faulty, such as short circuit between turns, reverse connection of a certain group of coils, etc.: we need to disassemble the motor to check the polarity of the motor winding and find out the cause of the fault, and then correct or eliminate the fault.
