The Switching Severity of Industrial Circuits -I

Circuit power factor has long been used as a rough measure of circuit interrupting severity. Closer analysis reveals that with some types of modern circuit interrupters (fuses, magnetic air breakers, load break switches) new definitions must be sought to describe the true severity of the application and test circuits. This paper presents the nature of the problem to be solved. This new undefined dimension of circuit severity is presented by means of equivalent circuit techniques.