Vacuum exhaust element of vacuum switch
AssigneeHitachi, Ltd.
InventorsMasashige Tsuji, Ayumu Morita, Toru Tanimizu, Katsunori Kojima, Yuichi Ishikawa, Yoshiharu Yotsumoto
Life of this patent
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Abstract
A vacuum exhaust element of a vacuum switch has an ordinary withstand voltage because the vacuum vessel and power source element are grounded, therefore not requiring the high voltage to be taken into consideration. This way, the vacuum exhaust element is miniaturized and it is safe for a worker to touch the vacuum vessel and the vacuum exhaust element when performing maintenance and/or inspection.
Claims21
A vacuum exhaust element of a vacuum switch in which a pair of electrodes are disposed in a grounded vacuum vessel so that one of said electrodes is detachably brought into contact with the other electrode, and rods connected with said electrodes extend to the outside from said vacuum vessel, said vacuum exhaust element comprising:
- a projection portion projecting to the outside from a part of said vacuum vessel, said projection portion having a chamber formed to communicate with said vacuum vessel;
- a magnetic field generator disposed outside said projection portion;
- and
- a power source circuit having on e terminal connected with an electrode and another terminal connected to a getter, with both said electrode and said getter being provided in said projection portion and said getter having the same potential as said projection portion.
A vacuum exhaust element of a vacuum switch in which a pair of electrodes are disposed in opposition to each other in a grounded vacuum vessel so that one of said electrodes is mounted on an insulator mechanically coupled with an operating mechanism to be detachably brought into contact with the other electrode, and rods connected with said electrodes extend to the outside from said vacuum vessel in directions perpendicular to each other, said vacuum exhaust element comprising:
- a projection portion projecting from a part of said vacuum vessel in the same direction as one of said rods;
- a magnetic field generator disposed outside said projection portion;
- and
- a power source circuit connected with an electrode and a getter which are provided in said projection portion.
A vacuum exhaust element of a vacuum switch in which a pair of electrodes are disposed in opposition to each other in a grounded vacuum vessel so that one of said electrodes is mounted on an insulator mechanically coupled with an operating mechanism to be detachably brought into contact with the other electrode, and rods connected with said electrodes extend to the outside from said vacuum vessel in directions perpendicular to each other, said vacuum exhaust element comprising:
- a projection portion projecting from a part of said vacuum vessel in the same direction as one of said rods;
- a magnetic field generator disposed outside said projection portion;
- and
- a power source circuit connected with an electrode and a getter which are provided in said projection portion,
- wherein said vacuum exhaust element is shorter than said one of said rods.
A vacuum exhaust element of a vacuum switch in which a pair of electrodes are disposed in opposition to each other in a grounded vacuum vessel so that one of said electrodes is mounted on an insulator mechanically coupled with an operating mechanism to be detachably brought into contact with the other electrode, and rods connected with said electrodes extend to the outside from said vacuum vessel in directions perpendicular to each other, said vacuum exhaust element comprising:
- a projection portion projecting from a part of said vacuum vessel in the same direction as one of said rods;
- a magnetic field generator disposed outside said projection portion;
- and
- a power source circuit connected with an electrode and a getter which are provided in said projection portion,
- wherein said vacuum exhaust element is disposed under said one rod in opposition to each other.
Dependencies are inferred from the claim text.