Vacuum disconnecting switch

摘要

The fixed electrode and the movable electrode (6, 7) of a vacuum disconnecting switch are arranged in a vacuum vessel (3) and are connected to a fixed and a movable bar (8, 9), respectively which extend outwards out of the vacuum vessel (3). In the region of the fixed electrode (6), the vacuum vessel (3) is externally surrounded by an electromagnetic repulsion winding (17) and a short-circuiting ring (16) which is coupled to the movable bar (9). An electromagnetic repulsion force produced between the short-circuiting ring (16) and the repulsion winding (17) is used for driving the movable bar (9) in such a way that the electrodes (6, 7) are disconnected. The magnetic flux generated in this case in the short-circuiting ring (16) produces a magnetic field which is parallel to the arc and opposes movement of the arc away from the electrodes (6, 7). <IMAGE>