Fan motor is apparently capacitor-start single phase induction motor
If that's the case, the capacitor feeds a start winding that's in angular displacement to the main stator winding. When starting, capacitor aids in generating stronger magnetic flux from start winding that translates as rotational torque. Once motor is up to about 75% of full speed, a centrifugal switch will open and drop start capacitor and winding.
anonymous
2014-11-12 09:35:16 UTC
There are usually two capacitors in a ceiling fan motor. One is the "start" capacitor and the other is the "run" capacitor. Simply put, an AC motor needs a rotating magnetic field in order turn the motor shaft. This is done by applying voltage with different phases to different windings. In a single phase system there is only one voltage phase. The capacitor is used to provide a phase shift in the windings of the motor, making it appear that the motor is operating in a multiphase system.
frechette
2016-08-06 02:02:31 UTC
Step 1Grab these safety glasses from the work bench, wipe the dirt off and place them the place they belong, over your eyes. Take away or disconnect all incoming energy to the motor to be verified. Carefully cast off the two screws that preserve the circular quilt over the begin capacitor. Most capacitors of this variety are held in location by using sticky tape. Do not put off the capacitor but, or the 2 wires which can be connected to it. Step 2Take your analog volt ohm meter and change to volts. Place each result in each connector on the capacitor making a parallel circuit with the meter, if there's a charge to the capacitor this will dissipate it. Keep the results in the connectors unless the voltage reads zero. Don't be tempted to quick out the connectors to the capacitor. Most capacitors are capable of maintaining a charge that tiers from 300 to 600 volts. Step 3Remove the wire leads that are related from the motor to the capacitor. Utilizing your volt ohm meter, switch it to the ohm atmosphere. Location the leads from the meter to the capacitor connectors, again making a parallel circuit, and depend to three. The battery in the meter will give a mild cost to the capacitor. Now reverse the meter results in the capacitor. If the capacitor is good this shall be observed by way of a bounce in the meter studying and the needle indicator will slowly go to endless ohms as the capacitor recharges. Step 4Repeat this process once or twice to be certain that the capacitor dielectric is just right. Next, while the meter remains to be on the ohm environment, experiment between the metal case of the capacitor and each lead, this should learn as countless ohms. If not, the capacitor is dangerous and needs exchanging. Established on my expertise is seems like a bad cap, other wise you just take leads off motor and meter on one lead then to frame of unit if no resistance motor is bad
Wizened wizard
2013-01-18 07:48:40 UTC
Capacitors store energy. When placed into an electric circuit, they store--and discharge--energy rapidly and continuously to support the functions of the rest of the circuit or the demands of the load (the motor or other part being run by electricity). The link below is a good discussion of capacitors in motors.
Pushpendra Lodhi
2013-01-18 07:52:32 UTC
a capacitor is a little like a battery, capacitors store electrical energy. A capacitor is much simpler than a battery, as it can't produce new electrons -- it only stores them.
Produce similar current in path.
sanjay
2013-01-19 06:01:32 UTC
For running any electric motor you need two interacting magnetic forces. DC motor and three phase motors(except squirrel cage) have two winding magnetically separated. But single Phase induction motors(generally in Home appliances) have two winding in same stator; to separate them magnetically a capacitor is connected in series with one of winding.
anonymous
2015-09-28 00:18:35 UTC
Single phase motor used for fans. it wont produce rotating magnetic filed which is required for rotating torque. if we provide a capacitor then phase angle will change which will produce rotating magnetic field.if u turn the fan blade by hand then the fan will rotate.
single phase motor used for fans. it wont produce rotating magnetic filed which is required for rotating torque. if we provide a capacitor then phase angle will change which will produce rotating magnetic field.if u turn the fan blade by hand then the fan will rotate.