Advantages and disadvantages of soft starter

A soft starter is a basically solid-state device and that protects AC electric motor from damage caused by sudden influxes of power by limiting the large initial inrush of current associated with motor startup. Soft starters are often the more economical choice for applications that require speed and as well as torque control only during motor startup. They are often the ideal solution for the applications where space is a concern, as they usually take up less space than variable frequency drives. This post is given information about the advantages and disadvantages of soft starter to better understand this topic. 

Benefits or advantages of the soft starter

  • It is a smooth acceleration of full speed
  • It is easy to operation,
  • It is an extended life of the motor and mechanical components.
  • It is suitable for all types of induction motors.
  • Enhancement of motor starting duty by reducing the temperature rise in a stator winding ad supply transformer.
  • Smooth starting by torque control for the gradual acceleration of the drive system. 
  • Reduction in starting current to achieve break away and hold back the current during acceleration to prevent mechanical, electrical of the electrical equipment such as motors, cables, transformer, and switchgear.
  • The microprocessor version of the soft starter has a software-controlled response at full speed which is economized energy, whatever it may be the load. 

Drawback or disadvantages of the soft starter 

  • In soft starter technology as compared to the frequency converter is that it is unable to control speed and it is also unsuitable for applications requiring speed control. 

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