Vacuum switch chamber has cylindrical insulating ring between housing and vacuum chamber and compressed so elastic material is pressed against internal housing and external chamber surfaces

摘要

The vacuum chamber (12) is inserted into an approximately cylindrical housing (10) of insulating material and is held in the housing, whose internal diameter is greater than the external diameter of the vacuum chamber. A cylindrical ring (23) of insulating material is arranged between the housing and vacuum chamber and compressed so that the elastic material is pressed against the internal surface of the housing and the outer surface of the vacuum chamber.