## Parameter

## RPM (Revolutions per Minute)

**RPM** is calculated by the formula:

**RPM = (120 × Frequency) / Number of Poles**

The frequency refers to the supply frequency (e.g., 50 Hz), while the number of poles depends on the motor’s design.

## Parameter

## Number of Pole Pairs

One can determine the number of pole pairs (P) by dividing the total number of poles (N) by 2:

**P = N / 2**

**Ex:** A 4-pole motor has 2 pole pairs.