Why can’t motors be started frequently?
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Is it because the motor has a high starting current, which generates a lot of heat and raises its temperature, and frequent starting may lead to excessive temperature rise and thus cause motor failures?
This post was last edited by qihangla on 2009-5-12 09:18. Frequent starting of motors results in high starting currents, which can easily damage the motors. Repeated starts also put a strain on contact switches, and higher insulation standards are required for motors. Generally, motors are not suitable for frequent starting; the number of starts allowed is usually below 20, and this figure varies depending on the manufacturer. If frequent starting is indeed necessary, clutch-braked motors can be considered from a cost perspective. The number of starts per day is generally limited to around 60 times. If cost control is not a concern, electromagnetic brake motors can be used, as they are suitable for frequent starting. For applications requiring precise control, servo motors should be chosen.
Frequent starting of the motor can damage it, and its service life will also **decrease**
The starting current of a motor is about 7 times the normal current; frequent starting not only easily damages the coils but is also harmful to the contact switches.
Electric motors have high starting currents; sometimes a voltage-reduction starting circuit is required. Frequent starting can easily damage the motor as well as electrical components such as contact switches.
What kind of logic is this? Whether the motor needs to be started frequently is determined by the process you are working with! If frequent starting is required, all the parameters and mechanical properties of the motor are designed and manufactured with frequent starting in mind. As for the high starting current, this is a normal characteristic of motors; it can be adjusted and limited using starting devices or speed control systems.
Come and learn*learn*~~~~~~~~~~~~~
Frequent starting can easily burn out electrical components such as motors and contact switches.
Whether the motor needs to be started frequently is determined by the process! If frequent starting is required, all the parameters and mechanical properties of the motor are designed and manufactured with frequent starting in mind. As for the high starting current, it is a normal characteristic of motors.
The starting current of a motor is 4 to 6 times the rated current. An excessive starting current can cause the stator windings to overheat severely; overheating of the stator windings can, in mild cases, affect the motor’s service life, while in severe cases it can instantly destroy the motor. Therefore, motors should be avoided from being started frequently, and a certain amount of time should be allowed between successive starts. :victory:
There are electric motors designed for use in environments with frequent startups; you can choose such motors.