Hubbell Incorporated
Surge Protective Device with Abnormal Overvoltage Protection

Abstract:

Surge protection device having surge protection and overvoltage protection capability are provided. In on example embodiment the surge protective device can include a surge protection circuit. The surge protection device can include an over voltage protection circuit coupled in series with the surge protection circuit. The overvoltage protection circuit can include a voltage sensing circuit associated with a voltage threshold one or more switching elements and/or a gating circuit coupled to the voltage sensing circuit. The gating circuit can be configured to control the one or more switching elements to be in a non conducting state when the voltage sensing circuit detects a voltage that exceeds the voltage threshold.