Views: 0 Author: Site Editor Publish Time: 2021-09-15 Origin: Site
When it comes to how long an electric motor can run continuously, it varies depending on the type and application. A continuous duty motor is designed to run for extended periods without overheating, but specific limits will depend on its design and cooling system. For instance, how long a DC motor can run continuously also depends on factors like load, cooling, and maintenance.
For brushless motors, they are known for their efficiency and can typically run continuously longer than brushed motors due to reduced wear and friction. If you’re asking how long can a brushless motor run continuously, these motors generally offer excellent performance with minimal maintenance requirements.
In applications like how long a water pump can run continuously, it's crucial to consider the pump’s specifications and operational environment to avoid overheating.
Similarly, can stepper motors run continuously? Yes, stepper motors can run continuously but might require proper cooling and maintenance to prevent overheating, especially in high-load conditions.
For a 12V DC motor, the runtime depends on its specific design and cooling features. How long can a 12V DC motor run continuously will vary based on usage conditions and motor specifications.
If you’re involved in motor rewinding training, it's essential to understand these limits to ensure proper maintenance and operation. Whether for industrial applications or other uses, knowing how long a motor can run continuously helps in making informed decisions about motor performance and longevity.
(1) Operating characteristics of electric motors
(2) The working principle of electric motor
(3) Precautions for the use of electric motors
During the operation of electric motor, various energy losses will eventually become heat energy, causing the temperature of various parts of electric motor to rise, which will exceed the ambient temperature. The thermal transition process of the temperature rise is called the heating process of electric motor, and the value of electric motor temperature higher than the ambient temperature is called the temperature rise. Once the temperature rises, electric motor will dissipate heat to the surroundings.
When the heat emitted by electric motor per unit time is equal to the heat emitted, the temperature no longer increases, and a stable temperature rise is maintained, which is called dynamic thermal balance. From the perspective of motor heating, one of the main factors determining the capacity of electric motor is the heat resistance of its winding insulation material, which is the temperature that the winding insulation material can tolerate.
The maximum temperature of electric motor during operation cannot exceed the maximum temperature of the winding insulation. When this limit is exceeded, the service life of electric motor will be greatly shortened, and even the insulation will quickly burn out and cannot be used.
The working system of electric motor indicates the allowable cycle time of electric motor under different loads. The working system of electric motor is: S1~S10; among them: the classification of the working system of electric motor is the description of the load condition of electric motor, which includes start, electric brake, no-load, power-off and stop, and the duration and sequence of these stages; the work system is divided into 10 categories, 2 categories are briefly introduced below.
S1 Continuous duty system: The running time under constant load is sufficient to achieve thermal stability.
S2 Short-time work system: Run for a given time under constant load, this time is not enough to reach thermal stability, and then the energy will be stopped for enough time to cool electric motor to within 2K of the temperature of the cooling medium.
S3 Intermittent cycle work system: run according to a series of the same work cycle, each cycle includes a period of constant load operation time and a period of energy interruption stop time. The starting current of each cycle in this working system will not have a significant impact on the temperature rise.
Pay attention to environmental protection when electric motor is maintained and repaired, and ensure that the repair site is pollution-free, and electric motor coil must not be removed by fire. For motors that have been used for more than one year, pay attention to checking the oil seal, shaft seal ring on the outside of electric motor end cover, junction box seat, seal ring on the junction box cover and other rubber parts for cracks, deformation, severe wear and other aging phenomena during maintenance. , The parts that cannot meet the sealing performance and requirements should be replaced in time.
These are all related matters that should be paid attention to during use. Only when we actually do these during use can we better maintain electric motor and get more benefits for ourselves.
