A soft start is an electronic device that limits the inrush current of an electric motor during startup. This helps to reduce the stress on the motor and the electrical system, and can also improve the life of the motor.
A soft start typically uses a solid-state controller to gradually increase the voltage applied to the motor during startup. This limits the inrush current and allows the motor to accelerate smoothly.
The benefits of using a soft start include: nReduced stress on the motor and electrical systemnImproved motor lifenReduced inrush currentnSmoother motor acceleration
There are two main types of soft starts: nCurrent-limiting soft starts limit the inrush current by using a resistor or inductor. nVoltage-ramping soft starts gradually increase the voltage applied to the motor during startup.