How to perform infrared thermal imaging detection for the five types of motor working systems?
Pay attention to the infrared thermal imaging test of the motor:
1. The temperature rise under the rated load does not exceed the temperature rise limit, and the motor temperature exceeds the maximum allowable operating temperature only because the ambient temperature is too high. This phenomenon indicates that the motor itself is normal.
Solution: Use artificial methods to reduce the ambient temperature. If it is not possible, you must reduce the load.
Second, the temperature rise under the rated load exceeds the nameplate regulations. No matter what the situation is, the motor is faulty, and it must be stopped for inspection, especially when the temperature rise suddenly becomes larger. The reasons are:
Third, insulation system failure and magnetic circuit system failure
➤ motor insulation aging
Rotating rotor
Short circuit between turns
➤Local core damage
Short circuit between strontium iron chips
➤ overload
Through infrared thermal imaging inspection, it can be found that the temperature of the entire stator surface of the motor is very high, the temperature at both ends of the motor stator is low, and the middle is high. Such abnormalities may be caused by overload or aging of insulating materials. Not caused by abnormal heat dissipation. The local heating of the stator surface may be caused by local core damage, short circuit between iron chips, and short circuit between turns.
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