Claims
- 1. A vacuum switch comprising:grounded vacuum vessels in which a vacuum circuit-breaker portion and a disconnector portion are contained respectively; vacuum-measurement devices which are attached to said grounded vacuum vessels, respectively; and vacuum pumps which are attached to said grounded vacuum vessels, respectively.
- 2. A vacuum switch comprising:a vacuum vessel containing a fixed electrode, and a movable electrode which is connected to or disconnected from said fixed electrode, of a circuit-breaker; a first grounded vacuum vessel, electrically insulated from said vacuum vessel, which contains said vacuum vessel; a second grounded vacuum vessel, electrically insulated from said first grounded vacuum vessel, which contains a disconnector and a grounding switch; an insulation bushing which is projected from said first grounded vacuum vessel; a load conductor which is led out of a bushing of said second grounded vacuum vessel; a grounding conductor which is led out a bushing of said second grounded vacuum vessel; first and second vacuum-measurement devices which are attached to said first and second grounded vacuum vessels respectively; a first operating rod for driving a movable blade of said movable electrode of said circuit-breaker; and a second operating rod, located substantially in the coaxial direction with said first operating rod, for driving a movable blade for said movable electrode of said disconnector.
- 3. A vacuum switch according to claim 2, wherein a vacuum pump is connected to each grounded vacuum vessel.
- 4. A vacuum switch comprising:a vacuum vessel containing a fixed electrode, and a movable electrode which is connected to or disconnected from said fixed electrode, of a circuit-breaker; a first grounded vacuum vessel, electrically insulated from said vacuum vessel, which contains and communicates with said vacuum vessel; a second grounded vacuum vessel, electrically insulated from said first grounded vacuum vessel, which contains a disconnector and a grounding switch; an insulation bushing which is projected from said first grounded vacuum vessel; a load conductor which is led out of a bushing of said second grounded vacuum vessel; a grounding conductor which is led out of a bushing of said second grounded vacuum vessel; first and second vacuum-measurement devices which are attached to said first and second grounded vacuum vessels respectively; a first operating rod for driving a movable blade of said movable electrode of said circuit-breaker; and a second operating rod, located substantially in the coaxial direction with said first operating rod, for driving a movable blade for said movable electrode of said disconnector.
- 5. A vacuum switchgear comprising:a vacuum switch, in which a vacuum circuit-breaker and a disconnector are contained in different grounded vacuum vessels, respectively, including a vacuum-measurement device attached to each grounded vacuum vessel; and operation units for driving respective movable electrodes situated in said vacuum switch.
- 6. A vacuum switchgear according to claim 5, wherein the space in a vacuum vessel containing said vacuum circuit-breaker potion communicates with the space in said grounded vacuum vessel containing said former vacuum vessel; and the space in said grounded vacuum vessel containing said disconnector portion is separated from the space in said grounded vacuum vessel containing said vacuum circuit-breaker portion.
- 7. A vacuum switchgear comprising:a vacuum switch, in which a vacuum circuit-breaker and a disconnector are contained in different grounded vacuum vessels, respectively, including a vacuum-measurement device and a vacuum pump attached to each grounded vacuum vessel; and operation units for driving respective movable electrodes situated in said vacuum switch.
- 8. A vacuum switchgear comprising:a vacuum vessel containing a fixed electrode, and a movable electrode which is connected to or disconnected from said fixed electrode, of a circuit-breaker; a first grounded vacuum vessel, electrically insulated from said vacuum vessel, which contains said vacuum vessel; a second grounded vacuum vessel, electrically insulated from said first grounded vacuum vessel, which contains a disconnector and a grounding switch; an insulation bushing which is projected from said first grounded vacuum vessel; a load conductor which is led out of a bushing of said second grounded vacuum vessel; a grounding conductor which is led out of a bushing of said second grounded vacuum vessel; first and second vacuum-measurement devices which are attached to said first and second grounded vacuum vessels respectively; a first operating rod for driving a movable blade of said movable electrode of said circuit-breaker; a second operating rod, located substantially in the coaxial direction with said first operating rod, for driving a movable blade for said movable electrode of said disconnector; operation units, which are connected to said movable blade connected to said first operating rod, and said second operating rod, respectively; and a control unit for controlling said operation units.
- 9. A vacuum switch according to claim 8, wherein a vacuum pump is connected to each grounded vacuum vessel.
- 10. A vacuum switch comprising:a vacuum vessel containing a fixed electrode, and a movable electrode which is connected to or disconnected from said fixed electrode, of a circuit-breaker; a first grounded vacuum vessel, electrically insulated from said vacuum vessel, which contains and communicates with said vacuum vessel; a second grounded vacuum vessel, electrically insulated from said first grounded vacuum vessel, which contains a disconnector and a grounding switch; an insulation bushing which is projected from said first grounded vacuum vessel; a load conductor which is led out of a bushing of said second grounded vacuum vessel; a grounding conductor which is led out of a bushing of said second grounded vacuum vessel; first and second vacuum-measurement devices which are attached to said first and second grounded vacuum vessels respectively; a first operating rod for driving a movable blade of said movable electrode of said circuit-breaker; a second operating rod, located substantially in the coaxial direction with said first operating rod, for driving a movable blade for said movable electrode of said disconnector; operation units, which connect to said movable blade connected to said first operating rod, and said second operating rod, respectively; and a control unit for controlling said operation units.
- 11. A method of operating a vacuum switch, which includes a vacuum circuit-breaker and a disconnector, contained in different grounded vacuum vessels, respectively, including a vacuum-measurement device and a vacuum pump being attached to each grounded vacuum vessel; wherein the degree of vacuum in a vacuum switchgear including said vacuum switch and operation units for driving respective movable electrodes of said vacuum switch, is continuously monitored, and when the degree of vacuum in at least one of said grounded vacuum vessels deteriorates to less than a predetermined degree, the degree of vacuum in a corresponding one of, said vacuum vessel containing said vacuum circuit-breaker and said grounded vacuum vessels, is increased by operating said vacuum pump of said corresponding vessel.
Priority Claims (1)
Number |
Date |
Country |
Kind |
11-356974 |
Dec 1999 |
JP |
|
Parent Case Info
This is a divisional application of U.S. Ser. No. 09/732,737, filed Dec. 11, 2000, now U.S. Pat. No. 6,426,627.
US Referenced Citations (6)
Foreign Referenced Citations (3)
Number |
Date |
Country |
55-45160 |
Mar 1980 |
JP |
56-36818 |
Apr 1981 |
JP |
8-306279 |
Nov 1996 |
JP |