Abstract: A capacitor for use in a medium voltage capacitive voltage divider according to the present invention includes spaced plates encapsulated within an insulating material, the resulting device being usable as a supporting insulator as well as a voltage divider. The plates are configured such that there are no sharp corners or protuberances exposed therebetween, thus minimizing arcing propensity. The capacitor includes a first disc-shaped plate supported by a coaxial rod connected to a corresponding terminal. Dielectric material is cast around the first plate and a second plate is disposed over the exterior surface of the cast dielectric material. An exterior insulating material is encapsulated around the second plate which is electrically connected to a second terminal.

Abstract: An isolating switch for use in a voltage cell connected to a source of power. The switch is disposed on a slidable frame mounted on guides internally of the cell. It includes a movable assembly mounted rotatably on the slidable frame, with capacity for pivotal movement from switch closing position to switch opening position. The movable assembly includes an oscillatable rotary cylinder formed of insulating material and pivotal about its longitudinal axis. A plurality of axially spaced, co-planar poles are formed integrally with the cylinder, each pole including a pair of coaxial diametral arms of unequal length extending from opposite sides of the cylinder. The arms encase a diametral conductive core provided with electrical contacts mounted at each end. The contacts are connectable to, and disconnectable from, the source of power and an adjacent circuit breaker, or similar apparatus, by turning the movable assembly angularly about its longitudinal axis.