What factors can cause motor overload?
Release Time ：
2024-11-21
Source ：
network
Author：
Made by Guangdong Yongkun Motor Co., Ltd
Overload is a practical problem that may arise during the application of motor products. We have also shared many tweets on the topic of overload with everyone, but the focus of the shared content may not be entirely the same.
During a discussion on the topic of overload, I accidentally came across a piece titled "Why do motors overload?" Today, we will summarize the topic with you
Whether the motor is overloaded is relative to its load capacity. When the load dragged by the motor is greater than the actual load capacity that the motor can bear, it is manifested as overload. Therefore, motor users should choose and match motors according to their actual driving needs.
When the actual power of the motor is less than the nominal power, even if the motor user configures the load according to the nominal power, the motor will still exhibit overload, ultimately leading to serious problems such as winding burnout due to inability to meet the dragged load. This issue is quite common in the handling of specific quality problems. Motor users cannot directly measure the motor power, but can compare it through comparative methods. Under the same load, some motors can work normally, while others may have insufficient capacity. Therefore, motor manufacturers should produce motors according to specifications.
In the process of motor application, in addition to the matching relationship between the dragged load and the bearing capacity of the motor, the fault of the motor body may also lead to the appearance of overload problems in the motor. The main problem lies in the mechanical system factors of the motor, such as abnormal jamming or detachment of the bearing system, which causes the rotor part of the motor to fail to operate normally. Specifically, the motor speed cannot reach the rated speed or even stops running. Specifically, the motor has a "humming" operation, and the current will increase significantly. If the motor does not have a protective device, it may lead to serious faults in the end.
For impact loads with uneven loads, short-term lightweight overload may not cause serious problems with the motor, but severe overload may result in serious consequences such as motor stalling, mechanical and electrical performance overload, and potential quality threats to the winding and rotor systems, including winding overheating, bearing failure, and even shaft fracture.
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