Three-Phase Simultaneous Interruption in Interrupting Inductive Current Using Vaccum Switches

Abstract
This paper presents the problem of overvoltage due to three-phase simultaneous interruption using vacuum switches. This three-phase simultaneous interruption is a new phenomenon which has not been known before. This paper presents the realities of over-voltage due to three-phase simultaneous interruption and the cause of three-phase simultaneous interruption. Surge suppression by the CR Surge Suppressor and Nonlinear Resistor which has been recently developed are also presented.

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