Abstract:
A switch assembly including a vacuum switch mounted to an at least partly electrically conductive housing, and a holder for a vacuum bottle. The housing includes at least one gas entry opening at a lower end of the housing and at least one gas exit opening at an upper end of the housing, and a first free heat convection path between the openings to provide cooling. A second free heat convection path may be provided in a free space between the holder and vacuum bottle. A switching device for connecting the vacuum switch to a second electric conductor. An electric power distribution switchgear, encapsulating at least one three-phase module including a switching device.
Abstract:
A knife switch including an operator device for moving a contact knife between a first open position and a second position in electrical contact with a contact element. A free end of the contact knife provided with a dynamic electric field control device including an electrically conductive element. A switching device including a two-position switch including an at least partly electrically conductive housing, a three-position switch including the knife switch for connecting the two-position switch to a first electric conductor, wherein the at least partially electrically conductive housing is connected to a second electric conductor. A switchgear including switching devices.
Abstract:
A switch assembly including a vacuum switch mounted to an at least partly electrically conductive housing, and a holder for a vacuum bottle. The housing includes at least one gas entry opening at a lower end of the housing and at least one gas exit opening at an upper end of the housing, and a first free heat convection path between the openings to provide cooling. A second free heat convection path may be provided in a free space between the holder and vacuum bottle. A switching device for connecting the vacuum switch to a second electric conductor. An electric power distribution switchgear, encapsulating at least one three-phase module including a switching device.