Relationship between stator temperature and efficiency in asynchronous motors
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I would like to know whether the speed and torque of the motor decrease when its stator temperature rises, and by approximately how much?
The motor speed is related to the number of pole pairs in the motor, the power supply frequency, and the slip rate; torque is related to the power supply voltage and to the motor’s output power. When the voltage drops, the current drops as well, the power decreases, and the output torque also decreases.
The motor speed is related to the number of pole pairs in the motor, the power supply frequency, and the slip rate; it has no relation to the temperature of the motor stator. If the stator temperature is high, even if a fire breaks out, the motor’s speed will not change! Therefore, inspections must be strengthened!