Hubbell Incorporated
Deadfront arrester with disconnector device

Abstract:

Systems for disconnecting a surge arrester. One embodiment provides a surge arrester comprising a housing, a connecting interface configured to connect to an electrical power grid, and a disconnector device coupled to the connecting interface. A metal oxide varistor stack is coupled to the disconnector device, and a ground side connection is coupled to the metal oxide varistor stack, the ground side connection configured to connect to a system ground. The disconnector device is configured to disconnect the connecting interface from the system ground based on a predetermined disconnection condition.