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The starting capacitor is an AC electrolytic capacitor, a polypropylene or polyester capacitor, used to start a single-phase asynchronous motor.
The new motor has a nameplate on it, which records data such as motor power, current, and capacitance. If you encounter an old motor without a nameplate, how do you calculate the capacitance?
A single-phase motor with too small a starting capacitor can cause difficulty in starting. If the capacitor is too large, it will burn out the motor, so it is important to choose a suitable capacitor.
The formula for calculating the starting capacitor capacity is:
2p---the power factor big is taken as 2, and the power factor small is taken as 4;
Cosφ---power factor (0.4 ~ 0.8) is generally 0.8 for the motor.
Starting capacitor withstand voltage:Capacitance withstand voltage is greater than or equal to 1.42 × U, the pressure is small and easy to be broken down.
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