## What is the RPM of a 3 pole motor?

Approximate Electrical Motor Speed (rpm) | ||
---|---|---|

No. Poles | Speed with Rated Load | Synchronous Speed (no Load) |

2 | 3450 | 3000 |

4 | 1725 | 1500 |

6 | 1140 | 1000 |

## How do you calculate motor RPM with poles?

Poles = number of poles of your motor. So, for example, if you have a 4 pole motor on 60 Hz then RPM=60*(2/4)*60=1800 rpm.

**How do you find the RPM of a motor?**

For an AC motor, the number of poles and the frequency determine the no-load RPM. For a 60 Hz system with four poles, the calculations to discover RPM would be: (Hz x 60 x 2) / number of poles = no-load RPM. (60 x 60 x 2) / 4.

### What RPM is 2 pole?

approximately 3600 rpm

Two pole AC motors operating at 60 Hz will always run at approximately 3600 rpm, and four pole AC motors will have speeds around 1800 rpm.

### What is the speed of a three pole motor operating at 50 Hz?

3.3.2.3 Constructional Details

Electric Frequency (Hz) | Motor Speed (RPM) | |
---|---|---|

Two-Pole Motors | Four-Pole Motors | |

50 | 3,000 | 1,500 |

60 | 3,600 | 1,800 |

100 | 6,000 | 3,000 |

**How many RPM is a 4-pole motor?**

1,800 rpm

A four-pole motor will only rotate at 1,800 rpm. For 50 Hz motors, the speed is 3,000 rpm with 2 poles, and 1,500 rpm with 4 poles.

## How many Poles is a 3-phase motor?

The most basic 3-phase brushless motor is a 2-pole 3-slot motor. There are various combinations such as 4-pole 3-slot, 4-pole 6-slot, and 16-pole 12-slot. When the number of poles and the number of slots increases, a large torque can be obtained and the torque pulsation also decreases.

## How many RPM is a 4 pole motor?

**What is the rotating speed of a 3-phase 20 Hz pole?**

Synchronous rotation speed at different frequencies and number of poles

Shaft rotation speed – n – (rev/min, rpm) | ||
---|---|---|

Frequency – f – (Hz) | Number of poles – p – | |

20 | 1200 | 200 |

30 | 1800 | 300 |

40 | 2400 | 400 |

### What is the RPM of a 6 pole motor?

Six-pole motors run at 1,200 rpm unloaded (7,200 Ã· 6) and between 1,050 and 1,175 rpm loaded.

### What is the formula of pole?

The formula is n = 60 x f /p where n = synchronous speed; f = supply frequency & p = pairs of poles per phase. The actual running speed is the synchronous speed minus the slip speed.

**What is the RPM of a 4 pole motor?**

Please try again later. Poles = number of poles of your motor. So, for example, if you have a 4 pole motor on 60 Hz then RPM=60* (2/4)*60=1800 rpm.

## How do you calculate the number of Poles on a motor?

When selecting a three phase motor, the number of poles is chosen to achieve the speed of rotation that you require. Here are two tables, one for a 50 Hz power supply and one for a 60 Hz power supply: The formula is n = 60 x f /p where n = synchronous speed; f = supply frequency & p = pairs of poles per phase.

## How do you calculate the RPM of a 3 phase motor?

RPM = (120 * Frequency) / # of poles in the motor Since the number of poles of a three phase induction motor is established when it is manufactured, the only way to change the speed of the motor is to change the Frequency. For Example: A four pole three phase VFD when operated at 60 Hz will be very close to 1800 RPM (synchronous speed).

**What is the difference between rpm and rpm Poles?**

RPM = shaft rotation speed or revolutions per minute. Poles = number of poles of your motor. So, for example, if you have a 4 pole motor on 60 Hz then RPM=60* (2/4)*60=1800 rpm.