LIGHTNING ARRESTER WITH PRESSURE RELIEF MEANS

摘要

A lightning arrester with means for relieving internal pressure by venting the housing in case of failure of the arrester. The housing is closed at the end by a thin sealing plate and a piercing member is disposed inside the housing adjacent the plate. An explosive disconnector device is provided on the outside of the housing, and in case of failure of the arrester the disconnector operates and drives the plate onto the piercing member to puncture the plate and relieve internal pressure in the housing.