![]() ![]() It has a single cage rotor, and its stator has two windings known as main winding and starting winding. What is the phase difference between starting winding and main winding? As current flows through the run capacitor and the start winding, it causes a phase shift of the motor’s current, thus improving the power factor of the motor. The run capacitor is placed in series with the start winding of the compressor and will remain in the circuit as the motor operates. What is the function of the start and run winding in a single-phase compressor? This winding creates the rotating magnetic field in this type of motor by changing the relationship of the current in relation to the voltage. What is the purpose of the start winding?Ī startup winding, also known as the auxiliary winding, is used to create the torque needed to start a single phase induction motor. The starting winding is wound with fewer turns of smaller wire than the main winding, so it has a lower inductance (L) and higher resistance (R). When the motor is starting, the startup winding is connected to the power source via a centrifugal switch which is closed at low speed. ![]() ![]() The auxiliary winding of a permanent split capacitor motor has a capacitor in series with it during starting and running. Once started the auxiliary winding is optional. Single-phase induction motors are not self-starting without an auxiliary stator winding driven by an out of phase current of near 90°. Which motor has starting winding as well as running winding?
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