# Which is better 2 pole or 4 pole motor?

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A 4-pole motor has about 3.0 ft-lbs of torque per horsepower whereas a 2 pole motor has 1.5 ft-lbs of torque. At 60Hz, a 4-pole motor is about 1800 rpm where a 2-pole motor is 3600 rpm. Thus, the 4-pole motor provides higher-efficiency, higher torque per unit of volume and weight.

## How do you tell a 2 pole from a 4 pole motor?

Two pole has two electromagnets, 1 north, 1 south. Four pole has four electromagnets, 2 north, 2 south. Four pole motors have a north-south-north-south configuration.

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

A 4-pole motor has 4 eletromagnets; 2 north and 2 south. … Basically, a 2-pole motor is a good RPM motor while a 4-pole motor, having more magnets, will have more torque. You might lose a bit of efficiency with a 4-pole over a 2-pole, but if you’re only running 5/6-minute races that should be ok.

## What is the speed of a 2 pole motor?

approximately 3600 rpm

## What is the difference between a 4 pole and 6 pole motor?

Given all else is equal then the 6 pole will develope more torque but less power than the 4 pole , the magnets must be smaller in the 6 pole so less powerful but as there are more it’s smoother and gives more torque .

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## What does 4 pole switch mean?

The four-way switch looks similar to a double-pole switch, except it has no on/off markings. It has four terminals plus a ground terminal. The four terminals are usually brass-colored. There is no “COM” or “common” terminal, as is found on a three-way switch.

## What is a 4 pole 3 phase motor?

With a 4-pole machine, the rotor will move from 1 pole pair to the next in 1 AC supply cycle, so will do half a rev in one supply cycle – the synchronous speed is therefore 50/2 revs per second, or 1500 rpm. A 4-pole induction motor will have a nominal speed of 1450 rpm or thereabouts.

1,200 rpm

## Does higher KV mean faster motor?

Kv describes the RPM (revolutions per minute) a motor does per Volt that is put into it. Generally speaking the more Kv a motor has, the more RPM and more power. For example, a 9000Kv motor would be faster than a 2200Kv motor.

## What is a 6 pole motor?

On an induction motor, the number of poles determines the speed given the frequency of the power. For a 2 pole motor, at 60hz, it will spin 60 times a second, or 3600rpm. For a 4 pole motor, the speed is halved – 1800 rpm, 6 pole, 1200 rpm and so on. … Synchronous speed = 3000, 1500, 1000, 750.

## What RPM is an 8 pole motor?

Approximate Electrical Motor Speed (rpm)No. PolesSpeed with Rated LoadSynchronous Speed (no Load)4172518006114012008850900Ещё 2 строки

## How do you slow down an AC motor?

If it’s a small fan motor or even a ceiling fan, this is often done by reducing voltage to the motor with a solid state control or a series inductance. This just increases the slip speed. A large AC motor can be slowed down with a Variable Frequency Drive.

## What is meant by 2 pole motor?

A 2 pole motor is a type of motor that has two magnetic poles or a pair of magnetic pole, with a north-south configuration. A 2 pole motor consumes less energy, has more revolutions per minute, good noise performance and less work output. This type of motor is not efficient for heavy power applications.

## What is pole in motor?

Simply defined, a pole is a north or south magnetic field of force that is generated by a permanent magnet or current passing through a coil of wire. … Permanent-magnet stepper motors are the simplest. Manufacturers define their pole count by the number of pole pairs or stator windings.

## What is a 3 pole motor?

The magnetic fields in a three pole DC motor are generated by three electromagnets and two permanent magnets, as shown on the right. A section of the motor, called the commutator, connects the brushes to the coils and allows for current to flow from the power source, through the coils and back to the power source.

## What is a 8 pole motor?

If it is an 8-pole motor is will have 8 field coils evenly spaced all the way around it. Now, in an AC Motor with 3-phases you will have the 8-poles 3 times. That means you would have 24-groups of coils.