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2022
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03
The relationship between motor operating temperature and temperature rise
Temperature and temperature rise are two parameters that are difficult to circumvent for any motor product. The reliability and safety of the motor can be judged by the operation temperature and winding temperature rise of various parts of the motor. How to measure the temperature and temperature rise of the motor?
Distribute the temperature measurement points in the key nodes such as the heating parts of the motor, the inlet and outlet air outlets, and the bearings. When calculating the temperature rise of the frequency conversion, it is necessary to filter out the influence of the ambient temperature, and to evaluate the thermal stability of the motor. . The values of the two parameters should not be higher than the industry standard. If the operating temperature or temperature rise is too high, it means that the variable frequency motor may not be able to run smoothly.
Temperature, the size is related to the measurement unit; the temperature rise is a relative value, and the size has nothing to do with the measurement unit. In the application of high-power variable frequency motors, for the detailed inspection parts such as windings and bearings, the temperature has an intuitive judgment value. If the temperature is higher than a certain critical value, it will not work as expected, the service life of the motor will be greatly shortened, and even the operating conditions will Deteriorates rapidly and destroys the motor. It can be used as a basis for judging whether the electrical properties can operate unchanged under detailed conditions.
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