Gas-insulated circuit breaker and a method for breaking an electrical connection
AssigneeABB Schweiz AG
InventorGuenter Steding
Life of this patent
Estimating the term…
Abstract
A gas-insulated circuit breaker is disclosed that includes a housing defining a gas volume for a dielectric gas; a nominal contact system and an interruption contact system with a pin and a tulip that they are electrically connectable to and disconnectable from one another along an axis. The circuit breaker includes a guiding assembly including a guide sleeve and a guiding member that is coupled to the pin; and a gas damping assembly configured to damp a breaking movement of the pin by compressing the dielectric gas in an absorber volume. A movable absorption element and the absorber volume are arranged radially inward of the guide sleeve.
Claims20
A gas-insulated circuit breaker comprising:
- a housing defining a gas volume for a dielectric gas;
- a nominal contact system with a first nominal contact and a second nominal contact that are electrically connectable and disconnectable relative to one another, and an interruption contact system with a pin and a tulip corresponding to the pin such that they are electrically connectable to and disconnectable from one another, wherein at least the pin is moveable along an axis of the gas-insulated circuit breaker for selectively providing and breaking an electrical connection with the tulip;
- a guiding assembly including a guide sleeve and a guiding member, wherein the guiding member is coupled to the pin and configured to be moved together with the pin while being glidingly guided in the guide sleeve along a guiding length (L);
- and
- a gas damping assembly configured to damp a breaking movement of the pin by compressing the dielectric gas in an absorber volume and having at least one moveable absorption element configured to be moved at least partially along the guiding length (L) for compressing the dielectric gas in the absorber volume, wherein the absorber volume and the at least one moveable absorption element are arranged radially inward of the guide sleeve.
A method for breaking an electrical connection of a gas-insulated circuit breaker, comprising:
- providing a gas-insulated circuit breaker having a nominal contact system with a first nominal contact and a second nominal contact that are electrically connectable and disconnectable relative to one another, and an interruption contact system with a pin and a tulip corresponding to the pin such that they are electrically connectable to and disconnectable from one another;
- moving the pin in a first direction (D1) along an axis (A) of the gas-insulated circuit breaker;
- guiding the pin by a guiding assembly including a guide sleeve and a guiding member of the gas-insulated circuit breaker, wherein the guiding member is coupled to the pin and configured to be moved together with the pin while being glidingly guided in the guide sleeve along a guiding length;
- breaking the an electrical connection of the gas-insulated circuit breaker;
- and
- damping the movement of the pin using a gas damping assembly configured to damp a breaking movement of the pin by compressing an absorber volume and having at least one moveable absorption element configured to be moved at least partially along the guiding length for compressing the absorber volume, wherein the absorber volume and the at least one moveable absorption element is arranged radially inward of the guide sleeve.
Dependencies are inferred from the claim text.