What is the difference in 2 pole and 4 pole motor?
2 pole motor has two poles (or a single pair of magnetic poles) while 4 pole motors have four magnetic poles in alternating order. Rotor of the 2 pole motor complete one cycle for every cycle of the source, while the rotor of the 4 pole motor completes only half a cycle for every single cycle of the source.
Which is better 2 pole or 4 pole?
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. As speed decreases, torque increases so an 8 pole motor has 4x the torque of a 2 pole motor (but 1/4 the speed).
How do I identify a 4 pole motor?
If the machine is not to be or cannot be opened or it is hermetically sealed, then see the name plate details. For a 50 Hz (60 Hz) machine if the rated speed is just lower than 3000 rpm (3600 rpm) then it corresponds to 2-poles, if just lower than 1500 rpm (1800 rpm) it corresponds to 4-poles etc.
What is 2 pole 4 pole and 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.
What does 4 pole mean on a motor?
Motor Wiring and Number of Poles A 60 Hz power supply changes polarity 60 times per second, and a two-pole motor will spin at 3,600 rpm when connected to this source. 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 RPM is a 2-pole motor?
3,600 rpm
A two-pole motor operates at 3,600 rpm (7,200 rpm ÷ 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 a 2-pole 3 phase motor?
On a three-phase motor the pole pattern has to be repeated for each phase. Therefore a 2=pole, 3-phase motor will have six poles.
How many RPM is a 4 pole motor?
1,800 rpm
A four-pole motor will only rotate at 1,800 rpm.
What is a 2 pole 3-phase motor?
Which is better 4 pole or 6 pole motor?
Using this equation, 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. However, this is actually the speed of the magnetic field, called the synchronous speed, which is not always equal to the shaft speed.
Can a 60Hz motor run on 50Hz?
For a generic answer: yes you can, IF: you reduce the voltage by 50/60, the equipment doesn’t care, you don’t care about potentially overheating the motor, the process/load can tolerate the lower speed/torque, etc.
What is a 4 pole?
4-pole motor is with 4 magneticpoles on the rotor and the number of related electro-magnetic windings . A 4-pole motor has 3.0 ft. -lbs of torque per horsepower . At 60 Hz, motor is about 1800 rpm a 2-pole motor has 1.5 ft. -lbs of torque.
What is the RPM of a two pole motor?
A two-pole motor operates at 3,600 rpm (7,200 rpm ÷ 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 speed of a 4 pole motor?
A 50 Hertz system has a base speed of 3000 rpm. The next most complex motor has two sets of three phase windings, and is called a “4-pole motor”. It is the most common motor produced, and has a 60 Hertz base speed of 1800 rpm (the 50 Hertz speed is 1500 rpm). 6-pole motors operate at 1200 rpm (1000 rpm at 50 Hertz).
What is a 4 pole electric motor?
4-Pole Motor. A motor that contains four poles in the stator (or two pairs of magnetic poles) in alternating order; N > S > N > S. The synchronous speed of a four pole motor connected to the mains power is 1500 RPM, which is half the speed of the 2-pole motor.
What are electric motor poles?
electric motor. (redirected from 2 pole electric motor) Also found in: Dictionary, Thesaurus. machine that converts electrical energy into mechanical energy. When an electric current is passed through a wire loop that is in a magnetic field, the loop will rotate and the rotating motion is transmitted to a shaft, providing useful mechanical work.