SSD series intelligent motor soft starter is a starting equipment produced by using power electronics technology, microprocessor technology and modern control theory technology. This product can effectively limit the starting voltage of asynchronous motor when starting. It can be widely used in heavy-duty equipment such as fan, water pump, conveying and compressor. It is star / delta conversion, self coupling step-down It is an ideal replacement product for step-down starting equipment such as magnetron step-down.

working principle:

The main circuit of SSD motor soft starter adopts six thyristors in reverse parallel and connected in series to the stator circuit of AC motor. Using the electronic switch function of thyristor, the change of trigger angle is controlled by microprocessor to change the conduction angle of thyristor, so as to change the input voltage of motor, so as to achieve the purpose of soft starting of motor control. After starting, the output of the soft starter reaches the rated voltage. At this time, control the three-phase bypass contactor km to pull in and put the motor into power grid operation.