Soft Starters of Powerful Electric Motors and Economic Aspects of Their Application

The paper dedicated to the development of methods for determining economic efficiency in the implementation of starting devices of powerful electric motors. Currently, manufacturers of starting devices provide only general information about the various technical advantages of using soft starters, without affecting the economic aspects of their application. The start-up of powerful electric motors has a profound effect on the reliability of electromechanical equipment and creates additional economic risks for the enterprise. It is for powerful electric motors that the decision to use a soft starter needs a deep economic justification, since such engine operate in a long mode, and the initial cost of a soft starter is high. The results obtained make it possible to evaluate the planned economic effect of the introduction of soft starters for high power electric motors and, thereby, will further expand the market of soft starters in the medium and high power segment.