A two-pole motor operates at 3,600 rpm (7,200 rpm Ã· 2) unloaded, and approximately 3,450 under load. Two-pole motors often are found in pump applications, such as sump pumps, swimming pool pumps, and water recirculating equipment.

## What is the difference between a 2 pole and 4 pole motor?

A 2 pole motor has **high speed due to less number of poles**. Conversely, a 4 pole motor has low speed due to more number of poles. A 2 pole motor is more efficient on the flip side, a 4 poles motor is less efficient. A 2 pole motor has more RPM value; on the other side, the 4 poles motor has fewer revolutions per minute.

## What does 4 pole switch mean?

Four-way switches are **used to control lighting from three or more locations**. … There are four terminals that provide two sets of toggle positions on a four-way switch. Each set of terminals is one of the toggle positions. When the switch is in the up position, the current can flow through two terminals.

## How is motor pole count calculated?

The actual running speed is the synchronous speed minus the slip speed. To determine the number of poles, you can read the data plate directly or calculate it from the RPM stated on the data plate or you can count the coils and **divide by 3 (poles per phase)** or by 6 (pairs of poles per phase).

## What is 120 in motor speed formula?

The equation for calculating synchronous speed is: **S = 120 f/P speed = constant (120) times frequency of power source (60 Hz) divided by number of poles used in the motor (P)**.

## How do you calculate the maximum speed of a motor?

Max speed is defined by the bus voltage and the voltage constant (Ke). The max speed is simply when current flowing is zero, and **speed = Vbus/ Ke**. The units for Ke for linear motors is v/m/sec and for rotary and arc v/rad/sec.

## What is the speed of a motor?

Definition. Speed of a motor is **the magnitude of the rotational velocity of the motor shaft**. In a motion application, speed of the motor dictates how fast the axis rotates – the number of complete revolutions per unit time.