1. Type selection
To choose which type of motor in our factory, on one hand, according to the requirements of mechanical characteristics, starter, speed regulation, braking system, overload capacity and so on of the consumption machinery to the motor. On the other hand, the economy should be divided from the initial saving investment, reduce the operating cost and other aspects of comprehensive differentiation. In the performance of starting, reading speed and no extraordinary requirements, prefered to choose three - phase asynchronous cage motor.
2. Power selection
When selecting the set power of the motor, the extra power of the selected motor is greater than the power required by the consuming machine. Neither overload nor long light load. Can use analogy method, statistical method, test method, computational method, and so on.
3. Voltage selection
The extra voltage of the switching motor should be selected and the voltage difference of the power supply network. The well is respectively the motor to determine the power consideration. The additional voltage of the DC motor should also be matched with the supply voltage, usually operating at 110 V or 220 V. High power DC motor can advance to 600-800V to 1000
4. Speed selection
According to the consumption of machinery speed and transmission system. After economic and technical comparison must be the extra speed of the motor. The higher the extra speed of the motor with the same extra power, the lower the volume, weight and cost of the motor, and the popular flywheel moment
5. Selection of appearance mechanism
The commonly operated external mechanism includes open type, protective type, closed type, sealed type, and explosion-proof type.
