Quick Answer: What Is The Pole Of Motor?

What is 2 pole and 4 pole motor?

A 4-pole motor is within 4 magnetic poles on the rotor and the number of related electro-magnetic windings (circuits).

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..

How many Poles is a 1200 rpm motor?

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

What are the 4 poles?

Near, far, leading and trailing poles In the particular (but frequent) case of synchronous satellites, four more poles can be defined. They are the near, far, leading, and trailing poles.

What does 4 pole switch mean?

A four-pole switch can separately control four different circuits. A switch’s throw-count defines how many positions each of the switch’s poles can be connected to. For example, if a switch has two throws, each circuit (pole) in the switch can be connected to one of two terminals.

What is the speed of a DC motor?

DC controls adjust speed by varying the voltage sent to the motor (this differs from AC motor controls which adjust the line frequency to the motor). Typical no load or synchronous speeds for an AC fractional horsepower motor are 1800 or 3600 rpm, and 1000-5000 rpm for DC fractional hp motors.

What is the rpm of a 6 pole motor?

Approximate Electrical Motor Speed (rpm)No. PolesSpeed with Rated Load4172514256114095088507002 more rows

What is 120 in motor speed formula?

The formula for calculating synchronous speed is: Sync. Speed (in RPM) = 120 x Frequency (Hz) / # poles.

What is RPM of motor?

Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min, or with the notation min−1) is the number of turns in one minute. It is a unit of rotational speed or the frequency of rotation around a fixed axis.

What is the rpm of 1 hp motor?

Let’s look a two 1 HP motors. The 1800 RPM, 1HP motor produces 3 ft. lbs of torque at 1800 RPM. The 3600 RPM, 1HP motor produces 1.5 ft.

What is pole in induction motor?

The stator of an induction motor consists of poles carrying supply current to induce a magnetic field that penetrates the rotor. To optimize the distribution of the magnetic field, windings are distributed in slots around the stator, with the magnetic field having the same number of north and south poles.

How do you find the pole of 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.

What is a 2 pole 3 phase motor?

Each wound pole in a Stator is physically located across from another identically wound pole which is oppositely energized. Two pole motors typically have a minimum of four poles (counting start-windings). Three phase motors typically have a minimum of six poles. Three pole armatures are common in small DC motors.

How many Poles does a 900 rpm motor have?

Synchronous rotation speed at different frequencies and number of polesShaft rotation speed – n – (rev/min, rpm)Frequency – f – (Hz)Number of poles – p -804800800905400900100600010008 more rows

What is the formula for motor speed?

RPM = a/360 * fz * 60 RPM = Revolutions per minute. Example 1: Drive step resolution is set for 1000 steps per revolution. Example 2: Drive step resolution is set for 500 steps per revolution. With input frequency of 1000hz, .

How can we increase the RPM of motor?

Here are 4 step mentioned to increase the electric motor power.Eliminate Voltage Unbalance.Connect Motors to Variable Frequency Drives (VFDs) to Improve Efficiency.Choose Motors in the Right Size.Proper Maintenance Is a Must.

What RPM does a 4 pole rotor turn to produce 60hz?

1,800 rpmSimilarly, for a 4-pole generator, an engine speed of 1,800 rpm produces output of 60 Hz.

What is an 8 pole motor?

An 8 poles machines’ synchronous speed is 750 RPM. As the number of poles is increased, the magnetizing current of the motor increases and the motor can deliver the higher starting as well as the running torque. … The lower speed motor is suitable for driving the high inertial loads like cranes, elevator, etc.