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Q: How many poles in a 1200 rpm ac motor?
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How many poles for 2800 rpm motor?

Please refer to this link it may help you: www.ebmpapst.co.uk/assets/PDF/technical%20library/Synchronous%20Speed.pdf


What is the maximum RPM does a 3 phase motor run at?

The formula for RPM is ; RPM = Hz x (120 (constant)) divided by the # of poles. Number of poles a motor has; # of poles = Hz x (120 (constant)) / RPM.


What is the relationship between motor POLE and RPM?

Relationship between motor rpm and no of poles


The speed of a synchronous motor with 60 Hz power supply is?

Speed (RPM) = 120 x f / p f = frequency p = number of poles. 2 poles, speed = 3600 RPM 4 poles, speed = 1800 RPM


How do you tell how many poles a 3 phase 480 volt motor has?

It is based on the RPM of the motor. Use the following formulas for 50 and 60 Hertz. The mathematical formula is Frequency in Hertz times 60 (for seconds in a minute) times two (for the positive and negative pulses in the cycle) divided by the number of poles. For 60 hertz, the formula would be, 60 x 60 x 2 = 7,200 no load RPM divided by the number of poles will give you the nameplate RPM of the motor. eg from above formula 7200/2 pole = 3600 RPM, 7200/4 = 1800 RPM, 7200/6 = 1200 RPM


How is The RPM of an electric motor is determined?

The two main factors are the frequency and the number of poles of the motor. A formula for RPM is HZ x 60 x 2/ number of poles the motor has.


How many poles in a 5hp 1740 rpm motor?

Motherf****r I Dont Know B****


How many poles in a six thousand RPM motor?

It depends on the frequency. At 60 Hertz, with an ordinary two pole synchronous motor, you cannot have an RPM that is greater than 1800, so a six thousand RPM motor has to have a different power supply.


What is the advantage by using 8 pole motor instead of 6 pole motor?

The number of poles in a motor will determine the speed of that motor. n=speed, f=frequency, p=# of poles. n=(120f)/p So a 6 pole motor is rated to operate at n=(120*60)/6=1200 rpm. assuming 60Hz frequency Or a 8 pole motor is rated to operate at 900 rpm. Of course due to slip the rotor will always spin slightly slower.


Will changing an electric motors input from 115 volt to 230 volt cause motor to run at 3450?

Yes, IF the motor is a dual-voltage motor to begin with. There should be re-connection instructions on the motor nameplate, or available from the manufacturer. The motor will list both voltages on the nameplate. If it only lists one, then the motor cannot be re-wired to a different voltage.


How do you reduce rpm of an electric motor from 1200 rpm to 240 rpm?

You would use a worm drive meshed with a gear that has 130 teeth.


How much rpm for 12 volt ac motor?

The formula for RPM is, RPM = Hz x 60 x 2/# of poles the motor has. To answer this question more information needs to be stated.