External Bypass Intelligent Soft Starter Thyristor Controlled with External Contactor

Intelligent ac motor soft starter is a new type of motor starting equipment designed and produced by using power electronic technology, microprocessor technology and modern control theory. The product can effectively limit the starting current of asynchronous motor, can be widely used in fan, water pump, conveying and compressor load, is the traditional star / triangle conversion, self-coupling, magnetic control and other step-down starting equipment ideal replacement products.

The external bypass is to switch to an external independently installed bypass contactor after the thyristor has finished starting. The external bypass contactor needs to be independently selected and installed, the line impedance is relatively high, and there is a certain amount of loss and heat generation during operation. Compared with the built-in integrated solution, the advantages are more flexible choice of contactor capacity, better heat dissipation conditions and easy maintenance and replacement.