WO2023051992A1 - Gehäuse für eine vakuumschaltröhre - Google Patents
Gehäuse für eine vakuumschaltröhre Download PDFInfo
- Publication number
- WO2023051992A1 WO2023051992A1 PCT/EP2022/072797 EP2022072797W WO2023051992A1 WO 2023051992 A1 WO2023051992 A1 WO 2023051992A1 EP 2022072797 W EP2022072797 W EP 2022072797W WO 2023051992 A1 WO2023051992 A1 WO 2023051992A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- moving contact
- fixed contact
- contact half
- insulator component
- Prior art date
Links
- 239000012212 insulator Substances 0.000 claims description 88
- 238000009413 insulation Methods 0.000 abstract description 12
- 239000011810 insulating material Substances 0.000 description 23
- 229910052751 metal Inorganic materials 0.000 description 15
- 239000002184 metal Substances 0.000 description 15
- 239000000919 ceramic Substances 0.000 description 11
- 238000009826 distribution Methods 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000002241 glass-ceramic Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011224 oxide ceramic Substances 0.000 description 2
- 229910052574 oxide ceramic Inorganic materials 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
- H01H2033/6623—Details relating to the encasing or the outside layers of the vacuum switch housings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
- H01H2033/66276—Details relating to the mounting of screens in vacuum switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
Definitions
- the invention relates to a housing for a vacuum interrupter and a vacuum interrupter.
- VSR vacuum interrupters
- the insulators are often designed as two insulator components, which are connected by a metal middle part, e.g. B. from sheet steel, are separated, see z. E.g. EP0082801A1 (Siemens AG) 29.06.1983 and DE19713478C1 (Siemens AG) 09.04.1998.
- VSR voltage-insulated switchgear
- B. GIS gas-insulated switchgear
- dead tank an asymmetrical voltage distribution can occur at the VSR.
- the asymmetry can prevail in the BK or FK half of the VSR.
- the voltage stress in the moving contact half is higher than the voltage stress in the fixed contact half, see Figures 1 and 2. Accordingly, the dielectric dimensioning of the VSR is determined by the voltage stress in the moving contact half. This is the Fixed contact half of the housing if necessary. dielectrically oversized .
- the housing is suitable for a vacuum interrupter. It is designed to accommodate an axially movable moving contact rod carrying a moving contact and a fixed contact rod carrying a fixed contact.
- the moving contact rod is also referred to in the technical literature as a moving contact connection bolt or contact rod.
- the vacuum interrupter has an interrupter chamber which is enclosed by the housing and in which the fixed contact and the moving contact are arranged.
- the moving contact sits at one end of the moving contact rod, which is guided out of the vacuum interrupter in an axially movable manner.
- the moving contact can be moved relative to the fixed contact by an axial movement of the moving contact rod.
- the moving contact rod runs vacuum-tight through a cover of the housing; For this purpose, the cover has a push-through opening in its cover base, through which the moving contact rod is guided.
- the passage of the moving contact rod through the push-through opening in the bottom of the cover is kept vacuum-tight by means of metal bellows.
- the bellows is a metallic corrugated tube which, due to its large number of corrugations, can be axially stretched and compressed so that the axial movement of the moving contact rod required for switching operations of the vacuum interrupter is made possible without jeopardizing the vacuum tightness in the area where the moving contact rod passes through the cover base.
- the intended arrangement of the moving contact rod and the fixed contact rod in the housing defines a division of the housing into a moving contact half and a fixed contact half: the housing half in which the moving contact rod is arranged is referred to as the moving contact half and the housing half in which the fixed contact rod is arranged is called the called fixed contact half.
- a section of the housing that encloses the longitudinal axis of the housing is formed by an electrically insulating insulator component.
- An insulator component thus forms an insulating path along the housing, viewed in the direction of the longitudinal axis of the housing.
- the insulator component in the moving contact half and the insulator component in the fixed contact half have different dimensions.
- the specific, asymmetrical voltage stress of VSR in switch housings in particular in grounded switch housings, can be taken into account.
- the insulator components form a non-tracking external insulation of the housing.
- the insulator components are adapted to the respective voltage conditions of the housing in such a way that the insulation strength is improved.
- the adaptation of the dimensions of the insulator components to the specific voltage load offers the advantage of a smaller design of VSR and switching devices, which is associated with a cost reduction of the VSR and switching devices.
- the insulator components in the moving contact half and the fixed contact half are of different lengths, measured along the longitudinal axis of the housing.
- the specific, asymmetrical voltage load of VSR in switch housings can be taken into account.
- the insulator components are adapted to the respective voltage conditions of the housing in such a way that the insulation strength is improved.
- the insulator component in the moving contact half is longer than the insulator component in the fixed contact half.
- the specific, asymmetrical voltage stress of VSR in switch housings can be taken into account.
- the insulator components are adapted to the respective voltage conditions of the housing in such a way that the insulation strength is improved.
- a modified flange and a longer ceramic housing part can lead to a cost reduction.
- VSR housing there is increased stability of the VSR housing in the direction of the longitudinal axis of the housing, since an insulator component is stiffer than a metallic BK flange, e.g. B. made of stainless steel.
- the dielectrically necessary gap across the insulator component in the moving contact half is not undershot.
- the insulator component in the moving contact half and the insulator component in the fixed contact half have different inner diameters. It is also possible for an insulator component to have several different inner diameters, e.g. B. in the case of a conical or stepped shape of the insulator component: at a first position along the housing axis, the insulator component has a first inner diameter and at a second position along the housing axis, which is different from the first position, the insulator component has a second inner diameter , which is smaller or larger than the first inside diameter.
- At least one of the different inner diameters of the insulator component in the moving contact half or the fixed contact half is different from the inner diameter of the insulator component in the other housing half.
- the insulator component in the moving contact half has a larger inside diameter than the insulator component in the fixed contact half.
- the insulator components are each formed by a hollow cylinder of insulating material or by a plurality of hollow cylinders of insulating material joined together.
- the insulating hollow cylinders can consist of aluminum oxide ceramics, glass ceramics or glass glazed on the outside.
- Field control elements or screens located between the ceramics and the switching chamber can be provided to reduce the dimensions of the VSR.
- z. B. ceramic hollow cylinder By using several joined insulating hollow cylinders, z. B. ceramic hollow cylinder, the introduction of another field control element or screen, z. B. a floating screen between the insulating hollow cylinders possible. This measure has the following advantages:
- a metallic hollow cylinder is arranged as a switching chamber between the insulator component in the moving contact half and the insulator component in the fixed contact half.
- this serves as a condensation trap for the metal vapor that has formed.
- a metallic switching chamber offers greater design options than e.g. B. Ceramics in relation to the most precise possible adaptation of the tube housing to the geometry of the current path.
- a metallic hollow cylinder serving as a switching chamber and/or field control elements are arranged inside the isolator components, ie. H . viewed from the longitudinal axis of the VSR in front of the inner surface of the isolator components z. B. can be designed as ceramics positioned.
- a further preferred embodiment of the invention is a vacuum interrupter with a housing according to the invention.
- the vacuum interrupter is surrounded by a metallic housing.
- FIG. 1 shows a section through a conventional vacuum interrupter in a “dead tank” housing
- FIG. 1 is an enlarged view of the in FIG. 1 shown vacuum interrupter 1;
- FIG. 3 shows a section through a vacuum interrupter according to the invention according to a first embodiment
- FIG. 4 shows a section through a vacuum interrupter according to a second embodiment of the invention
- FIG. 5 shows a section through a vacuum interrupter according to a third embodiment of the invention.
- FIG. 6 shows a section through a vacuum interrupter according to a fourth embodiment of the invention.
- FIG. 7 shows a section through a vacuum interrupter according to a further embodiment.
- FIG. 1 shows a section of a vacuum interrupter 1 known from the prior art, which is arranged within a grounded metallic "dead tank” housing 18.
- the vacuum interrupter 1 has a housing 5 which encloses an interrupter chamber 2.
- In the interrupter chamber are a Fixed contact 3 and a moving contact 4 are arranged.
- the fixed contact 3 is located at one end of a fixed contact rod 10, which is vacuum-tight through a first metal cover 7, e.g Tank “housing 18 is led out.
- the moving contact 4 sits at one end of a moving contact rod 9, which is guided in a displaceable and non-rotatable manner by means of a bearing 15, which is fixed to a second cover 8, and through the second cover 8 from the vacuum interrupter 1 and the "dead tank” housing 18.
- the moving contact 4 can be brought into contact with the fixed contact 3 in a closing process and at a distance from the fixed contact 3 in an opening process.
- the fixed contact 3 and the moving contact 4 are made of a hollow metal cylinder 13 enclosed, which forms the central part 13 of the VSR housing 5 and the vacuum interrupter 1 divided into a moving contact half a and a fixed contact half b.
- the insulating hollow cylinder 14 can, for. B. be formed from a ceramic such as an alumina.
- the end of the insulating hollow cylinder 14b facing away from the metal hollow cylinder 13 is closed with the first cover 7.
- a cylindrically shaped moving contact flange 16 is arranged on the moving contact half a of the vacuum interrupter 1 at the end of the insulating hollow cylinder 14a facing away from the metal hollow cylinder 13, the end of which facing away from the metal hollow cylinder 13 is closed with the second cover 8.
- the two covers 7 and 8, the moving contact flange 16, the two insulating material hollow cylinders 14a, 14b and the metal hollow cylinder 13 arranged between the two insulating material hollow cylinders 14a, 14b are arranged coaxially and together form the vacuum-tight housing 5 of the vacuum interrupter 1 .
- the passage of the moving contact rod 9 through the second cover 8 is kept vacuum-tight by means of a metallic bellows 12, the first end of which is arranged on the second cover 8 and the second end of which is connected to a projection 11 of the moving contact rod 9, referred to as a bellows cap, e.g. B. by a soldered connection.
- a metallic bellows 12 the first end of which is arranged on the second cover 8 and the second end of which is connected to a projection 11 of the moving contact rod 9, referred to as a bellows cap, e.g. B. by a soldered connection.
- FIG. 2 shows an enlarged view of the vacuum interrupter 1 shown in FIG. 1.
- the screens 20 formed on both ends of the metal hollow cylinder 13 of length m are shown therein.
- the length of the insulating distance Ia of the moving contact half a, measured along the longitudinal axis of the vacuum interrupter 1, formed by the insulating material hollow cylinder 14a, which is located on the moving contact half a, is given as x;
- the length of the insulating gap 1b of the fixed contact half b, measured along the longitudinal axis of the vacuum interrupter 1, formed by the insulating hollow cylinder 14b, which is located on the fixed contact half b, is indicated by y;
- the x and y values can be one act length, e.g. B.
- the fixed contact 3 and the first cover 7 electrically connected thereto are at a first electrical potential epi.
- the moving contact 4 and the second cover 8 electrically connected to it and the moving contact flange 16 are at a second electrical potential ⁇ p 2 •
- the first potential epi has the value 0 (volts)
- the second potential ⁇ p 2 the value U (volts) .
- FIGS. 3 to 7 show sections of vacuum interrupters 1 according to the invention, which are arranged within a grounded metallic “dead tank” housing.
- the “dead tank” housing is not shown in FIGS. 3 to 7 in order to simplify the figures ;
- the arrangement of the vacuum interrupters 1 according to the invention in the "dead tank” housing corresponds to the arrangement shown in FIG. Fig. 3 shows a first embodiment of the vacuum interrupter 1 according to the invention.
- the vacuum interrupter 1 corresponds to a conventional vacuum interrupter 1, as shown in Figures 1 and 2, in particular the overall length is identical, apart from the following difference: the inventive In the moving contact half a, vacuum interrupter 1 has an insulator component Ia that is longer than the insulator component Ib in the fixed contact half b (asymmetrical design).
- the insulator component Ia in the moving contact half a and the insulator component Ib in the fixed contact half b are each made up of identical insulating hollow cylinders 14 with a length L, measured along the axis of rotation of the insulating hollow cylinder 14 .
- the arrangement of the additional insulating material hollow cylinder 14a.2 in the moving contact half a eliminates the moving contact flange 16.
- an additional shielding element 21 arranged, which can serve to improve the dielectric properties of the VSR or a protection against vaporization.
- the fixed contact 3 and the first cover 7 electrically connected thereto are at a first electrical potential epi.
- the moving contact 4 and the second cover 8 electrically connected to it are at a second electrical potential ⁇ p 2 •
- the first potential epi has the value 0 (volts)
- the second potential ⁇ p 2 the value U (volts) .
- the metal hollow cylinder 13 is at a third electric potential go of 0.3 U.
- there is a potential difference of Acp 0.7 U between the two ends of the insulator component I a , which is arranged on the moving contact half a.
- Fig. 4 shows a second embodiment of the vacuum interrupter 1 according to the invention.
- the vacuum interrupter 1 according to the invention corresponds to a conventional vacuum interrupter 1, as shown in Figures 1 and 2, with the following difference:
- the vacuum interrupter 1 according to the invention has in the moving contact half a an insulating material hollow cylinder 14a with a larger inner diameter Da than the insulating material hollow cylinder 14b in the fixed contact half b.
- Fig. 5 shows a third embodiment of the vacuum interrupter 1 according to the invention.
- the vacuum interrupter 1 according to the invention corresponds to a conventional vacuum interrupter 1, as shown in Figures 1 and 2, apart from the following differences:
- the vacuum interrupter 1 according to the invention has in the moving contact half a an insulator component I a which i) has a larger internal diameter D a than the insulator component Ib in the fixed contact half b and ii) has a greater length x, measured along the longitudinal axis 17 of the housing 5, than the insulator component Ib in the fixed contact half b.
- the insulator component Ia in the moving contact half a and the insulator component Ib in the fixed contact half b are formed from insulating hollow cylinders 14 with an identical length L, measured along the axis of rotation of the insulating hollow cylinder 14 .
- Fig. 6 shows a fourth embodiment of the vacuum interrupter 1 according to the invention.
- the vacuum interrupter 1 according to the invention corresponds to a conventional vacuum interrupter 1, as shown in FIGS. 1 and 2, apart from the following differences:
- the vacuum interrupter 1 according to the invention has an insulator component I a in the moving contact half a, which has different inside diameters D a .
- the insulator component I a has at its one end, on which the metal hollow cylinder 13, which forms the central part 13 of the VSR housing 5, is arranged, has a first inner diameter D a _! on and at its other end, on which the second cover 8 is arranged, has a second inner diameter D a , 2 which is smaller than the first inner diameter D a , 2 .
- the insulator component I a is made up of two insulating material f hollow cylinders 14, 14a, 14a.2 joined together, of which a first one 14a adjoins the central part 13 and a second one 14a.2 adjoins the second cover 8, and where in the joint of the two insulating material hollow cylinders 14a, 14a.2 a shielding element 21 is inserted.
- the first insulating material hollow cylinder 14a adjoining the central part 13 has a first, constant inside diameter D a-1 over its entire length, measured along the longitudinal axis of the housing 5 .
- the second conical insulating material hollow cylinder 14a adjoining the second cover 8 widens from a smaller, second inner diameter D a , 2 to the first inner diameter D a , 2 .
- the inside diameter D b of the insulator component I b in the fixed contact half b is constant over the entire length of the insulator component I b , measured along the longitudinal axis of the housing 5.
- at least the first inside diameter D a , 2 of the insulator component I a in the moving contact half a is different from the inner diameter D b of the insulator component I b in the fixed contact half b.
- Fig. 7 shows another embodiment of the vacuum interrupter 1 according to the invention.
- the vacuum interrupter 1 according to the invention corresponds to a conventional vacuum interrupter 1, as shown in Figures 1 and 2, except for the following differences: Firstly, the vacuum interrupter 1 according to the invention has an insulator component Ia in the moving contact half a, which is longer than the insulator component Ib in the fixed contact half b (asymmetrical design).
- a metallic hollow cylinder 13 serving as an interrupter chamber is not between the insulator components Ia and Ib, as in the case of the vacuum interrupters shown in FIGS. B. can be formed as ceramics, but arranged within the insulator components I a and Ib. Seen from the longitudinal axis 17 of the VSR 1, the metallic hollow cylinder 13 serving as the switching chamber is thus positioned in front of the inner lateral surface of the insulator components Ia and Ib.
- the metallic hollow cylinder 13 serving as an interrupter chamber is held by a holding device, e.g. B. a circumferential metallic disk ring, which is inserted and fastened in the parting plane 19 between the insulator component Ia in the moving contact half a and the insulator component Ib in the fixed contact half b.
- a holding device e.g. B. a circumferential metallic disk ring, which is inserted and fastened in the parting plane 19 between the insulator component Ia in the moving contact half a and the insulator component Ib in the fixed contact half b.
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280065095.8A CN118043929A (zh) | 2021-09-28 | 2022-08-16 | 用于真空开关管的壳体 |
JP2024517379A JP2024534492A (ja) | 2021-09-28 | 2022-08-16 | 真空バルブ用のハウジング |
EP22765782.2A EP4367706A1 (de) | 2021-09-28 | 2022-08-16 | Gehäuse für eine vakuumschaltröhre |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021210859.8A DE102021210859A1 (de) | 2021-09-28 | 2021-09-28 | Gehäuse für eine Vakuumschaltröhre |
DE102021210859.8 | 2021-09-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023051992A1 true WO2023051992A1 (de) | 2023-04-06 |
Family
ID=83232506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/072797 WO2023051992A1 (de) | 2021-09-28 | 2022-08-16 | Gehäuse für eine vakuumschaltröhre |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4367706A1 (de) |
JP (1) | JP2024534492A (de) |
CN (1) | CN118043929A (de) |
DE (1) | DE102021210859A1 (de) |
WO (1) | WO2023051992A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0082801A1 (de) | 1981-12-23 | 1983-06-29 | Siemens Aktiengesellschaft | Vakuumschaltröhre mit einem Ring zur Erzeugung eines axialen Magnetfeldes |
DE19713478C1 (de) | 1997-03-18 | 1998-04-09 | Siemens Ag | Vakuumschaltröhre mit einem zwischen zwei Isolatoren angeordneten metallenen Gehäuseteil |
US5864942A (en) * | 1995-12-26 | 1999-02-02 | Thomas & Betts International Inc. | Method of making high voltage switches |
JP2001167673A (ja) * | 1999-12-13 | 2001-06-22 | Mitsubishi Electric Corp | 電力開閉器 |
DE102017222406A1 (de) * | 2017-12-11 | 2019-06-13 | Siemens Aktiengesellschaft | Vakuumschaltröhre |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6261221A (ja) | 1985-09-09 | 1987-03-17 | 株式会社明電舎 | 真空インタラプタ |
-
2021
- 2021-09-28 DE DE102021210859.8A patent/DE102021210859A1/de active Pending
-
2022
- 2022-08-16 WO PCT/EP2022/072797 patent/WO2023051992A1/de active Application Filing
- 2022-08-16 EP EP22765782.2A patent/EP4367706A1/de active Pending
- 2022-08-16 JP JP2024517379A patent/JP2024534492A/ja active Pending
- 2022-08-16 CN CN202280065095.8A patent/CN118043929A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0082801A1 (de) | 1981-12-23 | 1983-06-29 | Siemens Aktiengesellschaft | Vakuumschaltröhre mit einem Ring zur Erzeugung eines axialen Magnetfeldes |
US5864942A (en) * | 1995-12-26 | 1999-02-02 | Thomas & Betts International Inc. | Method of making high voltage switches |
DE19713478C1 (de) | 1997-03-18 | 1998-04-09 | Siemens Ag | Vakuumschaltröhre mit einem zwischen zwei Isolatoren angeordneten metallenen Gehäuseteil |
JP2001167673A (ja) * | 1999-12-13 | 2001-06-22 | Mitsubishi Electric Corp | 電力開閉器 |
DE102017222406A1 (de) * | 2017-12-11 | 2019-06-13 | Siemens Aktiengesellschaft | Vakuumschaltröhre |
Also Published As
Publication number | Publication date |
---|---|
JP2024534492A (ja) | 2024-09-20 |
CN118043929A (zh) | 2024-05-14 |
EP4367706A1 (de) | 2024-05-15 |
DE102021210859A1 (de) | 2023-03-30 |
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