Capacitor Run Induction Motor

The capacitor is of paper type. The name capacitor starts itself shows that the motor uses a capacitor for the purpose of the starting.

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There are two capacitors in this method one is used at the time of the starting and is known as starting capacitor.

Capacitor run induction motor. The two windings are displaced 90 degrees in space. The capacitor is permanently connected to the starting winding. Capacitor run motor working connection scheme for the capacitor run motor is the same as the capacitor start motor except for the absence of centrifugal switch s.

Thus a capacitor start induction run motor produces a better rotating magnetic field than the split phase motors. Capacitor induction motors are widely used for heavy duty applications requiring high starting torque. Capacitor start induction motor a capacitor start motors are a single phase induction motor that employs a capacitor in the auxiliary winding circuit to produce a greater phase difference between the current in the main and the auxiliary windings.

The auxiliary winding is also known as starting winding. The run capacitor uses the charge of the dielectric material that separates the two plates of the capacitor to provide more current to the motor. The stator has two windings ie.

Main winding and an auxiliary winding. It is evident from the phasor diagram that the current through the starter winding is leads the voltage v by a small angle and the current through the main winding im lags the applied voltage. The capacitor start capacitor run motor has a cage rotor and its stator has two windings known as main and auxiliary windings.

Examples are refrigerator compressors pumps and conveyors. This kind of capacitor also creates the torque the rotational force of the motor. A capacitor start capacitor run induction motor is a single phase motor consists of a stator and a single cage rotor.

This arrangement is known as a capacitor start capacitor run motor.

Module 8

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