The main reasons for overloading electric machines are:
1. Excessive load: This may be due to design defects, workmanship Mistakes or changes in operating conditions
2. Insufficient power supply voltage: The motor needs to withstand additional electricity when it starts current, so voltage instability can cause the motor to be overloaded
3. Motor damage: such as worn motor bearings or short circuits in the windings

4. Current loop control failure: due to some part of the current regulator out
The current problem may cause an abnormal increase in current.
5. Oil hysteresis: The hysteresis of motor oil makes it difficult for the motor to effectively release the overload
Solutions to these problems include:
1. Reduce the load or replace the motor with a larger capacity Finish. Check the power supply voltage and take appropriate action
2. Carry out necessary inspection and maintenance of the motor
3. Follow the instructions for regular maintenance and maintenance of the motor.
4. Install overload protection devices or other related devices near the motor

Causes and treatment methods of overload of three-phase asynchronous motors:
Three-phase asynchronous motor is a common motor in industry, which is widely used in various mechanical equipment.
However, during use, the motor may be overloaded. This article will introduce the causes and treatment methods of overload of three-phase asynchronous motors to help you better understand and deal with this problem.
Overload refers to the phenomenon that the load borne by the motor exceeds its rated load capacity, resulting in excessive current generation during the operation of the motor, which causes the motor to overheat, damage or even burn.
So, what are the reasons for the overload of three-phase asynchronous motors?
Excessive load: When the load on the motor exceeds its rated load capacity, it is easy to cause overload. This can be due to a sudden increase in load, mechanical failure, or improper design, among other reasons.
Unstable power supply voltage: The rated load of the motor is determined under a stable power supply voltage, if the power supply voltage fluctuates greatly and exceeds the rated voltage range of the motor, it is easy to cause the motor to be overloaded.

Winding temperature is too high: When the motor is running, the current passing through the winding will produce a certain resistance loss, which will increase the winding temperature. If the winding temperature is too high, it is easy to cause motor overload.
So, how do we deal with the problem of overload of three-phase asynchronous motors?
Check the load: First of all, you need to check whether the load on the motor exceeds its rated load capacity. If the load is too large, it is necessary to reduce the load or replace the suitable motor.
Check the power supply voltage: If the power supply voltage fluctuates greatly, you need to take voltage stabilization measures, such as adding capacitors, installing voltage regulators, etc.
Pay attention to the winding temperature: detect the motor in time to prevent the motor from being overloaded due to excessive winding temperature.

Install the overload protection device: When the motor is overloaded, the overload protection device will automatically cut off the power supply to protect the motor from damage.
Through the reasonable application of the above methods, the problem of overload of three-phase asynchronous motor can be effectively avoided, the service life of the motor can be prolonged, and the production efficiency can be improved.
Get more information about electric motor , please contact with Dongchun motor , a professional electric motor manufacturer in China .