Electrical gas-blast switch
AssigneeSiemens Aktiengesellschaft
InventorsUlrich Habedank, Klaus-Peter Rolff
Life of this patent
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Abstract
In a gas-blast switch with a compression device to produce a quenching gas blast, in order to make the magnetic effect of the break current available already at the beginning of the cut-off movement, a compression chamber and a piston-cylinder system form an energy accumulator. A movable element of the piston-cylinder system is mechanically linked with an armature, which is axially moved by the magnetic field of a stator, which field is excited by the break current. The armature and the stator are arranged in such a way that the magnetic field already causes the armature to move.
Claims5
An electrical gas-blast switch comprising:
- a contact device including a fixed contact piece, a connector piece and a switching piece, the switching piece electrically connecting the fixed contact piece to the connector piece in a contact making position;
- a compression device for generating a blast of a quenching gas, the compression device including a compression piston and a compression cylinder;
- an armature;
- a stator for generating a magnetic field for causing an axial movement of the armature;
- and
- an energy accumulator including a first compression chamber and a piston-cylinder system, the piston-cylinder system including a first movable element mechanically coupled to the armature and a second movable element mechanically coupled to the switching piece,
- wherein the armature and the stator are arranged to so that the magnetic field causes the armature to move into a cut-in position, and wherein the energy accumulator is discharged to support the movement of the second element and the movement of the switching system.
Dependencies are inferred from the claim text.