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Category: AC Compressor Starting Capacitor

Summary: The function of the capacitor in the air conditioner compressor is to enable the motor to start and operate by phase shifting the single-phase current.

Since the home has only a single-phase power supply, the motor of the fixed-frequency air-conditioning compressor uses a single-phase asynchronous motor. According to the working principle of the motor, it is necessary to realize a phase difference between the currents of the two sets of motor windings, otherwise it cannot be started.
The windings of the compressor motor are inductive components, so the implementation of the current phase difference requires a device that can phase shift the current. Generally, capacitors or resistors are selected, and in the air-conditioning compressor industry, capacitors are basically selected to obtain better motor efficiency and power factor. So the function of the capacitor is to make the motor work.


Smartclima can supply the following compressor starting capacitors:

(Notice: if you don`t find the needed items,or do you want to purchase, just email to us: [email protected], thank you.)