We said before that the three-phase asynchronous motor starting mode, including direct starting, autotransformer buck starting,Y－△Buck starting, rotor series resistance or frequency sensitive resistance starting, soft starter starting, frequency converter starting, Senli Motor Xiaobian also gives you a simple explanation of the next, today we continue to understand about soft starter starting.

       The soft opener is made of three opposite parallel thyristors For the voltage regulator, connect it between the power supply and the motor stator. This circuit is such as three-phase full control bridge rectifier circuit. When the soft starter is used to start the motor, the output voltage of the thyristor gradually increases, and the motor gradually accelerates until the thyristor is fully switched on, and the motor works on the mechanical characteristics of the rated voltage to achieve smooth starting, reduce the starting current, and avoid starting overcurrent trip.

       stayThree-phase asynchronous motorWhen the rated speed is reached, the starting process ends, and the soft starter automatically replaces the thyristor that has completed the task with a bypass contactor to provide a capacity for the normal operation of the motor The voltage is fixed to reduce the heat loss of the thyristor, extend the service life of the soft starter, improve its working efficiency, and avoid harmonic pollution in the power grid.

       The soft starter also provides a soft parking function, which is the opposite of the soft starting process, the voltage is gradually reduced, the speed is gradually reduced to zero, and the torque impact caused by free parking is avoided.

       The soft starter also has built-in protection functions, such as stall and lock-in test, phase balance, underload protection, undervoltage protection and overvoltage protection, which play a further protective role for the asynchronous motor.

       Senli Motor,19Focus on the development and production of electric motors. Available if needed1688Search factory name "Shengzhou Chaoli Electric Appliance Factory" , Or online consultation message, we will have business personnel to get in touch with you, you can also contact us directly0575-8378-1127.