What happens to the starting torque of a motor if a 230 volt PFC compressor tries to start at 184 volts?

When a 230-volt PFC compressor attempts to start at only 184 volts, the starting torque will decrease due to the lower voltage. Motors require a specific voltage to achieve optimal performance, particularly at startup, where the demand for torque is highest.

The torque produced by an induction motor is proportional to the square of the voltage applied to it. When the voltage is reduced, the available starting torque diminishes significantly. Specifically, if the voltage drops below the rated value, the magnetic field strength generated within the motor is reduced, resulting in less torque being produced to overcome inertia and initiate movement.

This decrease in starting torque at lower voltage can lead to difficulties in starting the compressor, potentially causing it to stall or not start at all. Therefore, starting a 230-volt motor at 184 volts not only impacts the performance but may also affect the reliability and lifespan of the compressor if such inadequate voltage conditions are regularly encountered.