By what percentage does a start capacitor typically increase motor torque?

The typical increase in motor torque provided by a start capacitor is approximately 250%. Start capacitors are designed to give an electric motor an extra boost during startup. When the motor is started, the start capacitor provides a temporary increase in phase shift for the current flowing through the motor, which enhances the initial torque available to overcome inertia and start the motor running.

This significant increase in torque is particularly crucial for motors that need to start under load or for applications where quick acceleration is required. The extra torque helps to ensure that the motor can overcome any mechanical resistance and begin spinning effectively.

The percentage increase reflects the enhanced performance during that initial startup phase, allowing motors to operate more efficiently and reliably in demanding conditions. Factors such as the design of the motor and the specific characteristics of the capacitor can influence this percentage, but the figure of approximately 250% is established as a standard reference in motor specifications.