Single-phase motor capacitor wiring diagram
The 220V AC single-phase motor starting method is roughly divided into several types: the first type, the split-phase starting type, as shown in Figure 1, is assisted by the auxiliary starting winding, and its starting torque is not large. The operating rate remains approximately constant. Mainly used in electric fans, air conditioning fan motors, washing machines and other motors.
Secondly, when the motor is stationary, the centrifugal switch is turned on. After the power is supplied, the starting capacitor participates in the starting work. When the rotor speed reaches 70% to 80% of the rated value, the centrifugal switch will automatically jump off, and the starting capacitor completes the task. Was disconnected. The starting winding does not participate in the running operation, and the motor continues to operate in the running winding coil, as shown in Figure 2.
Third, when the motor is stationary, the centrifugal switch is turned on. After the power is supplied, the starting capacitor participates in the starting work. When the rotor speed reaches 70% to 80% of the rated value, the centrifugal switch will automatically jump off, and the starting capacitor completes the task. Was disconnected. The running capacitor is connected to the start winding to participate in the operation. This connection is generally used in places where air compressors, cutting machines, woodworking machines, etc. are heavily loaded and unstable. Figure 3. 838 Electronics
A motor with a centrifugal switch, if the motor cannot be started successfully in a short time, the winding coil will burn out quickly.
Capacitance value: Double-valued capacitor motor, large starting capacitor capacity, small operating capacitor capacity, and withstand voltages are generally greater than 400V.
