### What is the number of motor poles and how to divide the number of poles?

Date：2022-07-26 Author：XINDA MOTOR

**What is the number of poles in a motor**

##
**How is the number of motor poles divided?**

##
**Magnetic pole identification method**

**1.**Look at the rotation speed, such as 1430r/min. The actual synchronous rotation speed is 1500 rotations. According to the rotation speed formula: rotation speed = time (60 seconds) & TImes; frequency (50HZ) divided by the number of magnetic pole pairs. A magnetic pole pair is 2 poles, so you can Calculate 3000÷1500=2 pole pairs, which is a 4-pole motor.

**2. It**is more direct to look at the model: for example, the motor model is Y 80M- 4 Y → three-phase asynchronous motor, and the product name code of the three-phase asynchronous motor is as follows: YR is a wound asynchronous motor; YB is an explosion-proof asynchronous motor ; YQ is a high starting torque asynchronous motor. 80→Center height of base (mm) M→Code of length of base 4→Number of magnetic poles.

**3.**The asynchronous motor starts with YB, the squirrel cage type is YR, the increased safety type is YA, and then the center height and the number of poles, such as YR400-4 560 6KV, the center height of the asynchronous squirrel cage motor is 400mm, and the number of poles is 4 poles, rated power 560KW, rated voltage 6KV.