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Harmonic Filter

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Soft starters are electronic devices used to control the acceleration of electric motors. Unlike traditional direct-on-line starters that immediately apply full voltage to the motor, soft starters gradually ramp up the voltage and current supplied to the motor during startup, which reduces mechanical and electrical stress on the system.

The primary function of a soft starter is to limit the inrush current that occurs when a motor is started, thereby preventing voltage sags and reducing wear and tear on mechanical components. By smoothly increasing the voltage, soft starters help prevent sudden jerks and shocks to the motor and connected machinery, improving operational efficiency and extending equipment lifespan.

The impact of the harmonic distortion is diverse, and the most typical effects are:

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