Motor start capacitors are used during the motor starting phase to increase the starting torque of single-phase motors. Once the rotor reaches a predetermined speed, the motor starting capacitor is disconnected from the circuit.
If your single-phase motor won't start, typically the starting capacitor (if you have one) may be bad. This is a common failure mode in single-phase motors. Single-phase motors usually have both a starting capacitor and a running capacitor. Run capacitors have a smaller rated capacitance than starting capacitors and are designed for continuous duty operation because they remain in the circuit at all times. It is important never to use a starting capacitor in place of a running capacitor because starting capacitors are not designed for continuous operation.
At Kesheng Electric, we understand the importance of selecting the right capacitor for your motor. It is essential to ensure that the capacitance and voltage rating of the replacement capacitor match the original as closely as possible. Additionally, the physical size of the replacement capacitor should be taken into consideration to ensure it fits within the motor capacitor housing.
Capacitance: When it comes to electric motors, capacitance is measured in microfarads (uF). The capacitor typically displays a numeric value or a range of values, followed by the letters MFD or uF. It's crucial to ensure that the replacement capacitor closely matches the original capacitance.
Voltage Rating: A replacement capacitor should have a voltage rating that is equal to or higher than that of the original capacitor. In fact, opting for a replacement capacitor with a higher voltage rating is often a better choice. However, it's essential to note that higher voltage ratings tend to result in larger capacitors. Therefore, the physical size of the capacitor should also be taken into consideration.
Size: The physical dimensions of the replacement capacitor must be compatible with the motor's capacitor housing. Generally, increasing either the capacitance or the voltage rating will lead to a larger capacitor.
We offer a range of start capacitors that can be purchased directly from our website. With our expertise and high-quality products, we can help ensure that your motor operates efficiently and effectively for years to come.
