# What is a 4 pole motor?

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4 pole motor is a type of motor with 4 magnetic poles or two pairs of magnetic poles, with a north-south-north-south configuration. A 4 pole motor consumes more energy, has fewer revolutions per minute, and delivers more torque per horsepower and work output.

around 1800 rpm

## 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.

## What is an 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.

## What is a 4 pole generator?

• Four-Pole Generators: • In a four-pole generator, there are six armature winding coils installed. in the stator. • North and south poles of the rotor are 900 apart. • A generator which is connected to the grid has a constant.

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## How do you tell if a motor is 2 pole or 4 pole?

A 2 pole motor shows a north-south configuration. A 4 pole motor shows north-south-north-south configuration. 2 pole motor has high speed due to less number of poles. A 4 pole motor has low speed due to more number of poles.

## Which is better 2 pole or 4 pole motor?

A 4 pole motor has more torque so it will lose LESS RPM under load than the 2 pole, which in the end will make it faster than a 2 pole motor.

## Why does Tesla use AC motor?

IMHO, AC Propulsion (Tesla Motors) uses AC because a mechanically commutated DC motor that meets the high “turn down” ratio of a vehicle application is more complex than an electronically commutated AC motor. Without that high turndown ratio the physical size of the motor producing just raw torque would be prohibitive.

## 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).

## Are Tesla Motors 3 phase?

A forerunner of the 3-phase induction motor was invented by Nikola Tesla sometime before 1889. Curiously, the stators for the 3-phase induction motor and the DC brushless motor are virtually identical. Both have three sets of “distributed windings” that are inserted within the stator core.

## How many RPM is a 8 pole motor?

Approximate Electrical Motor Speed (rpm)No. PolesSpeed with Rated LoadSynchronous Speed (no Load)41725180061140120088509002

1,200 rpm

## What is a 6 pole motor?

6 poles = 1,000 RPM (~970 RPM) 8 poles = 750 RPM (~720 RPM) For a 60 Hz three phase supply: 2 poles = 3,600 RPM (nameplate would list around 3,500 RPM) 4 poles = 1,800 RPM (~1,7.

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## What is a pole in a generator?

2 pole generators turn mechanical energy from turbines into alternating current electrical energy used by utilities and industries. 2-pole generators have a rotor that works like an electromagnet, with one north and one south pole. … The stator coil is then connected to the generator terminals.

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

Applying the equation above, a 4-pole motor at 60Hz has a speed of 1,800 rpm, while a 6-pole motor at 50Hz has a speed of 1,000 rpm. … If the motor is synchronous, the rotor uses a permanent magnet or electromagnet to rotate at the calculated speed.

## 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.