Leave Your Message

Analysis of the mean trouble-free working time of motors

2024-11-25

In the field of industrial production and power drive, three phase asynchronous electric motors are core equipment components, and their reliability is crucial. One of the key indicators for measuring motor reliability is the mean time between failures (MTBF). Understanding this indicator and its reliability testing and verification methods is of great significance for users to correctly select and effectively use motors.

The mean time between failures refers to the average length of time that a motor can operate continuously without failure under specific conditions and time. For high-efficiency three-phase asynchronous motors, their MTBF is affected by multiple factors such as design quality, manufacturing process, material selection, and operating environment. Under normal use and maintenance, the MTBF of high-quality and high-efficiency three-phase asynchronous motors can usually reach tens of thousands of hours or even higher.

11-25 simo.jpg

There are differences in the MTBF of motors of different manufacturers, models and specifications. Well-known brands and advanced technology manufacturers can significantly improve the MTBF of motors through R&D innovation, the use of high-quality materials and precision processes. In fields with extremely high reliability requirements such as industrial automation production lines, medical equipment, aerospace, etc., motors need to have a long MTBF to ensure production continuity and safety.

Reliability testing and verification methods for motors

To ensure the reliability of motors, a series of rigorous testing and verification methods are used in the development and production of motors.

Environmental adaptability test: The motor needs to be tested under different temperature, humidity, air pressure and other conditions. The motor's operating performance and reliability in hot climates are tested by simulating high temperature environments, the motor's starting ability and insulation performance are tested in low temperature environments, and the humidity test verifies the motor's moisture resistance and electrical insulation performance in humid environments. These tests help to discover possible problems with the motor under different environmental conditions and take improvement measures.

Durability test: Simulate the state of long-term continuous operation of the motor, observe the changes in parameters such as motor temperature rise, vibration, noise, and whether there is a fault. At the same time, perform frequent start and stop operations to test the motor's starting and stopping performance and adaptability to frequent operations.

Electrical performance test: Measure and analyze the motor's electrical parameters such as voltage, current, power, and power factor to ensure compliance with design requirements and relevant standards. Perform insulation resistance tests and withstand voltage tests to verify the insulation performance and electrical safety of the motor.

Mechanical performance test: Test the strength, stiffness, wear resistance and other properties of the motor's bearings, shafts, housings and other mechanical parts. By simulating operation under different load conditions, the bearing's load capacity and life are tested; the shaft is subjected to a torsional strength test to ensure that it will not break or fail during operation.

The motor's mean trouble-free working time is an important indicator of its reliability, and reliability testing and verification methods are key means to ensure the quality and performance of the motor. When choosing a industrial motor, users should pay attention to its MTBF and the reliability testing and verification methods used by the manufacturer to select motor products with reliable performance and excellent quality to provide stable power support for various application scenarios.