What is the reason that the single phase AC motor is turned on and off?
The first type of split start type, shown in Figure 1, is assisted starting by the auxiliary starting winding, with little starting torque. The operating rate is approximately constant. Mainly used in electric fans, air conditioners, fans, motors, washing machines and other motors.Second, the starting winding does not participate in the operation, while the motor to run the winding coil continue to act, as shown in figure 2.Third, motor static centrifugal switch is connected to the power, to start after starting work in the capacitor, when the rotor speed reaches the rated value of 70% to 80% when the centrifugal switch will automatically jump, starting capacitor to complete the task, and disconnected. The running capacitor is connected to the starting winding to participate in the operation. This method is generally used in air compressors, cutting machines, woodworking machines and other heavy load and unstable place.
Check the switch first, is there any bad contact?. After the problem of the switch is removed, the power is turned on, and whether the cold state can run normally every time. If there is a phenomenon that the cold condition can not work properly, the internal circuit or winding is not working.A single-phase alternating current motor is a rotating electromagnetic machine used to realize the conversion of electrical energy and mechanical energy.
Exclusive use only. Check the switch first, is there any bad contact?. After the problem of the switch is removed, the power is turned on, and whether the cold state can run normally every time. If there is a phenomenon that the cold condition can not work properly, the internal circuit or winding is not working. If the cold running is normal and the use of a period of time does not turn, and then use the hand to touch the motor whether the fever is serious, such as temperature is too high, the heat protector is broken, and so the motor can be turned cold. This phenomenon should check whether the no-load and load resistance of the motor is too large, whether or not the winding has a short turn between the two places, causing the temperature rise too high.The two capacitors on the motor, one is the starting capacitor, the other is the operating capacitor, which produces phase difference. The starting capacitor is only connected to the circuit when the motor is started, and it is disconnected when it is running normally. The operating capacitor is always connected to the circuit.
