If the measured temperature of the YZP lifting motor cover exceeds the ambient temperature by more than 25 degrees, it indicates that the temperature rise of the motor has exceeded the normal range. Generally, the temperature rise of the YZP lifting motor should be below 20 degrees. Once beyond the scope to find the cause and control.
Generally, the YZP lifting motor coil is made of enameled wire, and the enameled wire will fall off due to excessive temperature when the temperature is higher than 150 degrees, causing the coil to be short-circuited. When the coil temperature is above 150 degrees, the temperature of the motor housing is about 100 degrees, so the temperature that the motor is subjected to is 100 degrees based on the housing temperature.
The direct cause of heating of YZP crane motor is caused by high current. Generally, it may be caused by short circuit or open circuit of coil, demagnetization of magnetic steel or low efficiency of motor, etc., and the normal situation is that the motor runs at high current for a long time. When the load is running, there is power loss in the motor, which will become heat energy, which will increase the temperature of the motor and exceed the ambient temperature.
Once there is a temperature rise, YZP lifting motor to the surrounding heat; The higher the temperature, the faster the heat is dissipated. When the amount of heat emitted by the motor per unit time is equal to the amount of heat dissipated, the temperature of the motor no longer increases, and a stable temperature is maintained, that is, the state of heat generation and heat dissipation is balanced.
YZP crane motor load operation, from the best to play its role, with the load that is the output power, the greater the better. However, the greater the output power, the greater the power loss, the higher the temperature. We know that the weak thing in the motor is the insulation material, the insulation material has a limit to the temperature resistance, within this limit, the physical, chemical, mechanical, electrical and other aspects of the insulation material are very stable, and its working life is generally about 20 years.
