The disclosure relates to an arrangement and a method for switching an open contact gap by a switching device, wherein a galvanically isolated energy transmission of high-frequency energy provides an actuator energy for at least one switching device, in particular a vacuum interrupter. For the purpose of energy transmission, the switching device is connected to the high-frequency source via a dielectric resonator, the switching device being designed such as to be configured for converting the transmitted energy into actuator energy.

The disclosure relates to an arrangement and a method for switching an open contact gap by a switching device, wherein a galvanically isolated energy transmission of high-frequency energy provides an actuator energy for at least one switching device, in particular a vacuum interrupter. For the purpose of energy transmission, the switching device is connected to the high-frequency source via a dielectric resonator, the switching device being designed such as to be configured for converting the transmitted energy into actuator energy.

A vacuum interrupter for a vacuum circuit breaker is disclosed, in which a center shield is arranged between an upper insulating envelope and a lower insulating envelope, whereby the center shield is not provided inside each of the insulating envelopes and thus outer diameters of the respective insulating envelopes are reduced.

A vacuum interrupter for a vacuum circuit breaker is disclosed, in which a center shield is arranged between an upper insulating envelope and a lower insulating envelope, whereby the center shield is not provided inside each of the insulating envelopes and thus outer diameters of the respective insulating envelopes are reduced.

An insulating housing with integrated functions comprises a barrel-shaped shell, an interior wall of which being provided with a protruded or recessed uneven texture configured to increase a creepage distance between both axial ends of the barrel-shaped shell, the path of the creepage distance formed by the protruded or recessed uneven texture having more than two flyover or bypass sub-paths, such that the creepage distance is increased, and the voltage withstanding is increased. Meanwhile, by employing a construction of creepage-increasing rings, not only the creepage distance is increased greatly, but also the barrel-shaped shell is avoided from full-interior wall contamination by metal vapor evapotranspiration. Thus, under the double effects of a greater creepage distance and a greater proportion of uncontaminated area, the voltage withstanding and after arcing insulation level of the insulating housing with integrated functions are improved greatly, while the after arcing electric insulation level of the vacuum interrupter is not decreased, such that the insulating housing with integrated functions and the vacuum interrupter is developing towards high voltage and ultra-high voltage.

A “five-prevention” interlocking pole type high-voltage switchgear includes a pole bracket, embedded poles, and spring and earthing isolated switch operating mechanisms; every three poles are arranged in a row on the bracket, the spring operating mechanism is joined with the switch operating mechanism through the chamber door interlocking piece and mechanism interlocking piece; the chamber interlocking piece, mechanism interlocking piece and door lock plate are joined, the door lock plate is opposite the opening semi-axis pinch plate in the spring operating mechanism and the door lock plate is set with a door lock pin. Chamber interlocking piece movement is used to open or close the switch operating mechanism crank operation hole and corresponds to the start of close brake operation and limit brake of opening pinch plate in the spring operating mechanism and the limiting and opening of the opening semi-axis and cable chamber door in the spring operating mechanism.

An integrated assembly includes a switchgear apparatus for operation at voltages up to 72.5 kV and a mount assembly for coupling to a pole and to support the switchgear apparatus. The mount assembly includes a crossbar, a pole mount, a mounting bracket to support the switchgear apparatus, and a pair of crossbar mounts for supporting the mounting bracket on the crossbar at different positions. Each crossbar mount includes a first arm, a second arm spaced from the first arm and extending parallel to the first arm, a third arm extending between and coupled to a distal end of each of the first and second arms, and a flange extending between and coupled to a proximal end of each of the first and second arms. The flange extends parallel to the third arm. The first, second, and third arms and the flange form an enclosed space to receive the crossbar.

A double-contact switch has first and second tubular vacuum switching chambers; a stationary electrode, between the first and second vacuum switching chamber, having a first stationary contact protruding into the first chamber and a second stationary contact protruding into the second chamber; a first electrode, arranged in the first chamber, moveable axially therein, having a contact support region and sealed off from the first chamber exterior; a second electrode, arranged in the second chamber, moveable axially therein, having a contact support region and scaled off from the second chamber exterior; a first contact compression spring applying a first spring force to the first movable electrode so the first electrode contact presses onto the contact protruding into the first chamber; and a second contact compression spring applying a greater, second spring force to the second movable electrode so the second electrode contact presses onto the contact protruding into the second chamber.

A bypass switch includes: a casing; a vacuum interrupter disposed inside the casing, the vacuum interrupter being disposed such that a movable contact is movable to a fixed contact; a first fixing bus-bar fixed to the casing; a second fixing bus-bar fixed to the casing to be spaced apart from the first fixing bus-bar; a moving pusher connected to the movable contact; a drive source installed in the casing, the drive source pushing the moving pusher to a position at which the movable contact and the fixed contact are contacted with each other; and a multi-contactor disposed to be contacted with the moving pusher. Accordingly, the moving pusher can rapidly contact the movable contact with the fixed contact. Further, the moving pusher can be moved with a small external force. Thus, it is possible to minimize the size of the drive source and the power used in the drive source.

A bypass switch includes: a casing; a vacuum interrupter disposed inside the casing, the vacuum interrupter being disposed such that a movable contact is movable to a fixed contact; a first fixing bus-bar fixed to the casing; a second fixing bus-bar fixed to the casing to be spaced apart from the first fixing bus-bar; a moving pusher connected to the movable contact; a drive source installed in the casing, the drive source pushing the moving pusher to a position at which the movable contact and the fixed contact are contacted with each other; and a multi-contactor disposed to be contacted with the moving pusher. Accordingly, the moving pusher can rapidly contact the movable contact with the fixed contact. Further, the moving pusher can be moved with a small external force. Thus, it is possible to minimize the size of the drive source and the power used in the drive source.