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US 6,144,005 AGranted
Vacuum switch and a vacuum switchgear using the same
AssigneeHitachi, Ltd.
InventorsToru Tanimizu, Masato Kobayashi, Shuichi Kikukawa, Ayumu Morita, Minoru Suzuki, Yoshimi Hakamata, Katsunori Kojima, Yozo Shibata, Yoshitomo Gotoh, Makoto Terai, Takuya Okada, Naoki Nakatsugawa
Life of this patent
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Abstract
A vacuum insulation switch provided with a movable electrode, a stationary electrode and an earthing electrode, which are insulated from each other, in a vacuum container made of a conductive material which is earthed, and a switchgear using the same.
Claims33
A vacuum switch comprising:
- an earthed vacuum container, a main part of which is made of conductive material;
- a stationary electrode enclosed in the vacuum container in an airtight state;
- a movable electrode enclosed in the vacuum container in an airtight state, which is driven by an operating mechanism;
- an earthing electrode enclosed in the vacuum container in an airtight state, which is coupled with an earthing conductor;
- a first solid insulator, disposed entirely within the vacuum container, for insulating the stationary electrode from the conductive material of the vacuum container;
- a second solid insulator, disposed entirely within the vacuum container, for insulating the movable electrode from the conductive material of the vacuum container;
- and
- a third solid insulator for insulating the earthing electrode from the conductive material of the vacuum container.
5 more elements
A vacuum switch comprising:
- an earthed vacuum container, a main part of which is made of conductive material;
- a stationary electrode enclosed in the vacuum container in an airtight state;
- a movable electrode enclosed in the vacuum container in an airtight state, which is driven by an operating mechanism;
- an earthing electrode enclosed in the vacuum container in an airtight state, which is coupled with an earthing conductor;
- a load electrode enclosed in the vacuum container in an airtight state, which is coupled with a load;
- a first solid insulator, disposed entirely within the vacuum container, for insulating the stationary electrode from the conductive material of the vacuum container;
- a second solid insulator, disposed entirely within the vacuum container, for insulating the movable electrode from the conductive material of the vacuum container;
- a third solid insulator for insulating the earthing electrode from the conductive material of the vacuum container;
- and
- a fourth solid insulator for insulating the load electrode from the conductive material of the vacuum container.
7 more elements
A vacuum switchgear comprising:
- a vacuum switch having an earthed vacuum container, a main part of which is made of conductive material, a stationary electrode enclosed in the vacuum container in an airtight state, a movable electrode enclosed in the vacuum container in an airtight state, an earthing electrode enclosed in the vacuum container in an airtight state, which is coupled with an earthing conductor, a load electrode enclosed in the vacuum container in an airtight state, which is coupled with a load, a first solid insulator, disposed entirely within the vacuum container, for insulating the stationary electrode from the conductive material of the vacuum container, a second solid insulator, disposed entirely within the vacuum container, for insulating the movable electrode from the conductive material of the vacuum container, a third solid insulator for insulating the earthing electrode from the conductive material of the vacuum container and a fourth solid insulator for insulating the load electrode from the conductive material of the vacuum container;
- an operating mechanism for driving the movable electrode;
- an operating compartment for accommodating the operating mechanism;
- and
- a metallic cubicle for accommodating the vacuum switch and the operating compartment, the metallic cubicle being earthed.
2 more elements
A vacuum switchgear comprising:
- a vacuum switch having an earthed vacuum container, a main part of which is made of conductive material;
- a stationary electrode enclosed in the vacuum container in an airtight state;
- a movable electrode enclosed in the vacuum container in an airtight state;
- an earthing electrode enclosed in the vacuum container in an airtight state, which is coupled with an earthing conductor;
- a load electrode enclosed in the vacuum container in an airtight state, which is coupled with a load;
- a first solid insulator, disposed entirely within the vacuum container, for insulating the stationary electrode from the conductive material of the vacuum container;
- a second solid insulator, disposed entirely within the vacuum container, for insulating the movable electrode from the conductive material of the vacuum container;
- a third solid insulator for insulating the earthing electrode from the conductive material of the vacuum container and a fourth solid insulator for insulating the load electrode from the conductive material of the vacuum container;
- an operating mechanism for driving the movable electrode;
- an operating compartment for accommodating the operating mechanism;
- a conductor compartment for accommodating conductors connected to the load;
- and
- a metallic cubicle for accommodating the vacuum switch, the operating compartment and the conductor compartment, the metallic cubicle being earthed.
10 more elements
A vacuum switch comprising:
- an earthed vacuum container, a main part of which is made of conductive material;
- a stationary electrode enclosed in the vacuum container in an airtight state;
- a load electrode enclosed in the vacuum container in an airtight state, which is coupled with a load conductor;
- a first movable electrode enclosed in the vacuum container in an airtight state, which is coupled with the stationary electrode, for making contact with and separation from the load electrode;
- an earthing electrode enclosed in the vacuum container in an airtight state, which is coupled with an earthing conductor;
- a second movable electrode enclosed in the vacuum container in an airtight state, which is coupled with the earthing electrode, for making contact with and separation from the load electrode, wherein the contact with and separation of the first movable electrode and the second movable electrode from the load conductor are done asynchronously with each other;
- a first solid insulator, disposed entirely within the vacuum container, for insulating the stationary electrode from the conductive material of the vacuum container;
- a second solid insulator, disposed entirely within the vacuum container, for insulating the first and the second movable electrodes from the conductive material of the vacuum container;
- a third solid insulator for insulating the earthing electrode from the conductive material of the vacuum container;
- and
- a fourth solid insulator for insulating the load electrode from the conductive material of the vacuum container.
8 more elements
A vacuum switch comprising:
- an earthed vacuum container, a main part of which is made of conductive material;
- a stationary electrode enclosed in the vacuum container in an airtight state;
- a movable electrode enclosed in the vacuum container in an airtight state, which is driven by an operating mechanism;
- a load electrode enclosed in the vacuum container in an airtight state, which is coupled with a load;
- a first solid insulator, disposed entirely within the vacuum container, for insulating the stationary electrode from the conductive material of the vacuum container;
- a second solid insulator, disposed entirely within the vacuum container, for insulating the movable electrode from the conductive material of the vacuum container;
- another solid insulator for insulating the load electrode from the conductive material of the vacuum container;
- and
- wherein the movable electrode is electrically coupled with the load electrode by a flexible conductor.
6 more elements
Dependencies are inferred from the claim text.