# What is the formula for the speed of an asynchronous motor?

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### What is the formula for the speed of an asynchronous motor?

The **speed of an asynchronous motor** = frequency (in Hz)/number of pole pairs – slip*

### What is the slip value?

In **the** asynchronous motor case **slippage is the** ratio between the real speed of the rotor (the rotating part of the motor) and the theoretical speed at synchronism. He **is** generally given in % by the formula g=(Ns-N)/Ns with: g=coefficient of **slip**.

### How to calculate the slip of an asynchronous motor?

In the case of the asynchronous motor, the slip is the ratio between the real speed of the rotor (the rotating part of the motor) and the theoretical speed at synchronism. It is generally given in % by the formula g= (Ns-N)/Ns with: g=slip coefficient.

### What is the slip value of a motor?

At rated motor load, the slip value will be in the range of 8% to 2% (for low and medium power motors), the rated slip.

### What is electric motor slip?

Slip is one of the main characteristics of an electric motor. It varies according to the mode of operation, the load on the shaft and the supply voltage. Let’s take a closer look at what engine slip is, what it depends on and how it is determined.

### How to calculate the slip of an electrical machine?

Slippage in electrical machines. In the case of the asynchronous motor, the slip is the ratio between the real speed of the rotor (the rotating part of the motor) and the theoretical speed at synchronism. It is generally given in % by the formula g=(Ns-N)/Ns with: g=slip coefficient. Ns= speed at synchronism.