What Should I Do If The Motor Burns Out?

The motor is an indispensable power source equipment for the manufacturing industry. You will find that in the production process, there are many situations that may cause the motor to burn out!

The motor burned out, what is the reason? To find out the cause, first we can start with the source of the failure. Find out whether the burnt part of the motor is the bearing or the coil? If the coil is burned out, it means that it is caused by an electrical fault; if the bearing is burned out, it means that the mechanical fault and the quality of the motor hardware are not good. Generally caused by overcurrent, sometimes the coil is short-circuited due to unstable, too high or too low voltage, which burns out the motor. To eliminate this possibility, you can check whether the operating voltage is too different from the rated voltage. If it is, the fault is caused by unstable voltage; if not, it is caused by unstable current.

The current of the motor is short-circuited, which can generally be divided into four situations:

1. The equipment is overloaded and operated with over-rated current for a long time. In daily life, the starting current of the motor is 3-5 times the rated current, so it is necessary to avoid the situation of starting the equipment with load or full load.

2. The working environment of the motor is humid.

3. The mechanical failure of the pump causes the motor to be overloaded, resulting in excessive current and burning the coil.

4. There is a problem with the heat dissipation of the motor.

Overload and phase loss are two common faults of motors.

The reason for the lack of phase is that the connection point is disconnected, loose, or the contact position is oxidized due to the lack of power supply phase or the contactor contact in the line is not closed. It is characterized by the blackening of one or two phases of the winding, and the symmetrical and regular damage of the coil.

The cause of overload is generally due to the long-term overcurrent operation of the motor, overheating operation, frequent starting or braking, wiring errors and other reasons. It is characterized by all blackening of the windings, discoloration of the end ties and brittleness or even breakage.

Therefore, motor failures can be divided into two categories: mechanical failures and electrical failures. If the motor is only burned out due to mechanical failure, the motor supplier should be replaced directly; if it is an electrical failure, the best way is to install a motor protector in advance to prevent protection and avoid the next occurrence.