What are the characteristics and specifications of three-phase asynchronous motors?

 What are the characteristics of three-phase asynchronous motors and what are their specifications? Generally speaking, small asynchronous motors refer to induction motors.This kind of motor not only uses auxiliary coils and capacitors when it is started, but also when it is running.Although the starting torque is not very large, it has a simple structure, high reliability, high efficiency, and continuous operation.

Asynchronous motor characteristics:

1. Generally speaking, small asynchronous motors refer to induction motors.This kind of motor not only uses auxiliary coils and capacitors when it is started, but also when it is running.Although the starting torque is not very large, it has a simple structure, high reliability and high efficiency.
2. It can run continuously.
3. With the size of the load, the rated speed of the motor will also change.
4. Used in applications that do not require speed braking.
5. Insulation grade E is used, while type A is used for UL type motors.
6. There are two types of induction-running single-phase asynchronous motors and three-phase asynchronous motors.
7. The single-phase motor is an induction-running asynchronous motor with high efficiency and low noise.
8、单相电机的电源有A（110V 60Hz）、B（22V 60Hz）、C（100V 50/60Hz）、D（200V 50/60Hz）、E（115V 60Hz）、X（200-240V50Hz）等。
9. When a single-phase asynchronous motor is running, it produces a torque that is opposite to the direction of rotation, so it is impossible to change the direction in a short time.The direction of rotation of the motor should be changed after the motor has completely stopped.
10、三相电机时使用U（200V 50/60Hz）、T（220V 50/60Hz）、S（380-440V 50/60Hz）电源的异步电机。
 
Specification of asynchronous motor:
 
Insulation resistance
 
After running the motor at normal temperature and humidity, use a DC 500V insulation resistance meter to measure the motor.The insulation resistance between the metal resistance and the motor shell exceeds 100MΏ
 
Insulation internal pressure:
 
Under normal temperature and humidity, after running the motor, the voltage between the metal winding of the motor and the motor box
 
The temperature rises:
 
以1500V、50/60Hz输入1min时没有任何问题。运转电动机后，用温度计发测量时，温度上升数值在60℃以下（装有计算机的电动机则应该在45℃以下）
 
Insulation class:
 
Type E (120°C)
Overheat protection device
Built-in overheat protection device (automatic reset type): open (120±5℃); reset (77±5℃)
 
Operating temperature:
 
-10~50℃ (Using temperature of UL CE specification motor is -10~40℃)