We calculate the frequency with the formula beneath:

f = p*n/60 | f: the frequency in Hz |

p: the number of pole pairs | |

n: the engine speed in rpm |

In the table below, you will find a few examples we calculated using this formula.

Pole pairs | Engine speed (rpm) | Frequency (Hz) |
---|---|---|

1 | 3000 | 50 |

2 | 1500 | 50 |

4 | 750 | 50 |

4 | 3000 | 200 |

8 | 1500 | 200 |

8 | 3000 | 400 |

In some countries, they have other frequencies, which causes the engine speeds to change as well.