How do you know how many Poles a 3 phase motor has?

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.

How many Poles can an induction motor have?

four poles
AC Induction Motor Speeds Common AC motor units are constructed with either two or four poles. A magnetic field is created in the stator poles that induces resulting magnetic fields in the rotor which follow the frequency of the changing magnetic field in the stator.

How many leads does a 3 phase motor have?

A three-phase motor may be set up in one of two configurations: a Y-type (often written “wye,” as it’s pronounced) or a delta-type. Also, these motors have either six or nine leads.

What is pole in 3-phase induction?

For a 3-phase motor, if you count a total of 12 coil groups, it has 4 magnetic poles. For a 12-pole 3-phase machine, there will be 36 coils. The number of magnetic poles in the rotor is equal to the number of magnetic poles in the stator.

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 a 4 pole 3 phase motor?

Is there a 3 pole motor?

Electricity-3-pole DC electric motor. A DC motor generates a rotating force via attraction and repulsion of magnetic fields. The magnetic fields in a three pole DC motor are generated by three electromagnets and two permanent magnets, as shown on the right.

What is a 3 pole motor?

A three pole electric DC motor. A DC motor generates a rotating force via attraction and repulsion of magnetic fields. The magnetic fields in a three pole DC motor are generated by three electromagnets and two permanent magnets, as shown on the right.

What is a 3-phase motor?

A three-phase motor is an electric machine that transforms electric power into mechanical energy by means of electromagnetic interactions.

What is number of pole in motor?

The pole count of a motor is the number of permanent magnetic poles, north and south, on the rotor. There is always the same number of north and south poles on the rotor. For example, in a 12 pole motor, there are 6 north poles and 6 south poles. This motor would also be considered a 6 pole-pair motor.