CN102292788A - Vacuum interrupter - Google Patents
Vacuum interrupter Download PDFInfo
- Publication number
- CN102292788A CN102292788A CN2010800052805A CN201080005280A CN102292788A CN 102292788 A CN102292788 A CN 102292788A CN 2010800052805 A CN2010800052805 A CN 2010800052805A CN 201080005280 A CN201080005280 A CN 201080005280A CN 102292788 A CN102292788 A CN 102292788A
- Authority
- CN
- China
- Prior art keywords
- field control
- control elements
- case member
- vacuum switch
- switch tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
-
- 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
- H01H2033/66284—Details relating to the electrical field properties 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
- H01H2033/66292—Details relating to the use of multiple screens in vacuum switches
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention relates to a vacuum interrupter (1) with at least one substantially cylindrical, electrically insulating housing part (3), which is connected in vacuum-tight fashion to a metal part (9). In this case, the metal part has been provided with a field control element (13). The field control element (13) is arranged in a cutout (5) in the housing part (3) in such a way that the field control element (13) is arranged so as to be recessed with respect to the outer lateral surface of the housing part (3) or terminates flush with the outer lateral surface.
Description
Technical field
The present invention relates to a kind of vacuum switch tube, it has, and at least one is columniform basically, the case member of electric insulation, and described case member vacuum tightness ground is connected with a metal parts, and wherein, described metal parts is equipped with a field control elements.
Background technology
German utility model file DE 297 17 489 Ul disclose a kind of this type of vacuum switch tube.In this vacuum switch tube, described field control elements is installed on the outer surface of case member of described electric insulation and radially protrudes in described outer surface.Therefore may limit the compressive resistance of the so-called outside of vacuum switch tube thus at discharge or the arcing on the outer surface that causes easily between other conductive components (for example other field control elements) of field control elements and vacuum switch tube at vacuum switch tube.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of vacuum switch tube with high compressive resistance is provided.
According to the present invention, above-mentioned technical problem will be solved by the described vacuum switch tube of claim 1.
Dependent claims has provided the favourable expansion design of this vacuum switch tube.
In the vacuum switch tube of the described type of beginning, above-mentioned technical problem is solved by following manner, that is, described field control elements is arranged in the groove of described case member like this, that is, described field control elements is provided with being absorbed in or flushes with outer surface with respect to the outer surface of case member.
In this vacuum switch tube, described field control elements is arranged in the groove of described case member, and does not radially protrude in the outer surface of described case member.Therefore, advantageously do not exist field control elements to stretch out or outstanding parts, and on these parts, can produce undesirable high electric field strength from outer surface.Reduced very effectively thus and on the outer surface of vacuum switch tube, formed discharge or arcing.Therefore compressive resistance, the especially Wai Bu compressive resistance of vacuum switch tube have been improved significantly.In addition, also improved the so-called lateral isolation between the conductive component (wherein also can relate to other vacuum switch tubes) of vacuum switch tube and setting, because described field control elements does not protrude in the outer surface of case member along the direction of the described parts that are adjacent to be provided with being adjacent.Therefore on the position of field control elements, avoided reducing of insulation gap.
Described vacuum switch tube can design like this, that is, described field control elements is designed to rotation symmetry basically, and the maximum radius of described field control elements is less than or equal to the maximum radius on surface on the formation groove border of described case member.
In addition, described vacuum switch tube can design like this, that is, described case member connects by means of soldering and is connected with described metal parts.
In described vacuum switch tube, described case member can be made by pottery.
Described vacuum switch tube also can design like this, that is, described field control elements is especially made by copper or stainless steel by the material of conduction.
Described vacuum switch tube can design like this, that is, the portion section bending of described field control elements by described metal parts forms or described field control elements is connected with described metal parts by means of soldering or electric welding.
Described vacuum switch tube can realize like this that also promptly, described field control elements is designed to a ring by forming sheet metal, and wherein, the curved edge of described metallic plate is to form at least one circle property limit.In addition, this rounding has also reduced to cross the formation of high field intensity.
Described vacuum switch also can design like this, that is, described groove is used the insulating material of solid at least in part, especially fill with silicones, or described groove seals by the insulating material of described solid at least in part.In addition, described insulating material can surround the described field control elements that is arranged on groove at least in part.Therefore, advantageously can good insulation performance characteristic situation be issued to high compressive resistance having very.
Description of drawings
By embodiment the present invention is described in more details below.In the accompanying drawings,
Fig. 1 shows the embodiment of vacuum switch tube with cutaway view,
Fig. 2 shows the part of vacuum switch with cutaway view,
Fig. 3 shows another part of vacuum switch tube with cutaway view,
Fig. 4 shows the part of other vacuum switch tubes with cutaway view.
Embodiment
Fig. 1 shows the cutaway view of vacuum switch tube 1.This vacuum switch tube 1 have one columniform basically, first case member of making by pottery 3 of electric insulation.Described first case member 3 has the shape of hollow cylinder basically and has first groove 5 a distolateral end and have second groove 7 in another distolateral end.An end face vacuum tightness ground of first case member 3 is connected with first metal parts 9, for example, and the welding of vacuum tightness ground.The becket that first metal parts 9 has flange-like, this becket have vapor shield 11 and have first field control elements 13 in its radially outside end in the inside of vacuum switch tube.First metal parts 9 is connected with first crown cap, 15 vacuum tightnesses ground.Fixed contact 17 passes first crown cap 15 and inserts wherein securely, for example welding.
Another end face vacuum tightness ground of first case member 3 is connected with second metal parts 19.Second metal parts 19 similarly has the shape of flange ring, and this flange ring has second vapor shield 21 and has second field control elements 23 in its radially outside end in the inside of vacuum switch tube.Second metal parts 19 vacuum tightness similarly ground is with columniform basically, and the end face of second case member 25 of electric insulation connects, and described second case member designs identically with first case member in the present embodiment.Second case member 25 has the 3rd groove 26 and has the 4th groove 28 in another distolateral end a distolateral end.
The second end face vacuum tightness ground of second case member 25 is connected with the 3rd metal parts 27, and the 3rd metal parts is similar to first metal parts 9, has the 3rd vapor shield 29 and the 3rd field control elements 31.Described the 3rd metal parts 27 vacuum tightnesses ground is connected with second crown cap 33, and this second crown cap vacuum tightness ground is connected with an end of bellows 35.The other end of bellows 35 is connected with moving contact 37.Described bellows 35 makes moving contact 37 axial motions; This double-head arrow 39 that moves through is represented.
First field control elements 13, second field control elements 23 and the 3rd field control elements 31 relate to the conducting element that is used to influence electric field strength.Field control elements is made by copper coin in the present embodiment.
Fig. 2 has illustrated the part of an amplification of vacuum switch tube 1 with profile.Show a position among the figure enlargedly, be connected with second metal parts 19 at the end face of this position first case member 3, wherein, second metal parts 19 is connected with the end face of second case member 25 equally.This vacuum-tight connection can for example be that soldering connects.Second metal parts 19 has second vapor shield 21 at it towards the fixed contact 17 of vacuum switch tube 1 and a side of moving contact 37, and deviates from the fixed contact 17 of vacuum switch tube and a side of moving contact 37 has second field control elements 23 at it.
In the distolateral end regions of first case member 3, have second groove 7, in the distolateral end regions of second case member 25, have the 3rd groove 26.Second field control elements 23 is arranged in second groove 7 of first case member 3 like this, that is, second field control elements 23 is provided with respect to the outer surface of first case member 3 with being absorbed in.In addition, the maximum radius of rotational symmetric basically second field control elements 23 is less than the maximum radius on the surface on formation groove 7 borders of first case member 3.The maximum radius on the surface on formation groove 7 borders of described first case member 3 is equivalent to the maximum radius of first case member 3 in the present embodiment.In other words, second field control elements 23 is set to be absorbed in or sinks in second groove 7.Therefore second field control elements 23 does not radially protrude in the outer surface of first case member 3.
Similarly, second field control elements 23 is arranged in the 3rd groove 26 of second case member 25 like this, that is, second field control elements 23 is provided with respect to the outer surface of second case member 25 with being absorbed in.At this, the maximum radius of rotational symmetric basically second field control elements 23 is less than the maximum radius on the surface on formation the 3rd groove 26 borders of described second case member 25.
Normally one of case member, a plurality of or whole grooves (first groove 5, the second grooves, 7, the three grooves 26 and/or the 4th groove 28 in an embodiment) can be used the filling insulating material or the sealing of solid the most at least in part, for example use silicones.Therefore, advantageously can reach high compressive resistance in the good insulation performance characteristic having very.At this, insulating material can surround the described field control elements that is arranged on groove at least in part.Therefore, the space around the field control elements can be used filling insulating material at least in part.
In addition, can learn clearly that second field control elements 23 is designed to a ring by forming sheet metal by Fig. 2.The limit of described metallic plate-ring towards the direction bending of the rotating shaft of vacuum switch tube to constitute circle (limit) 203 and 205.In addition, this circle (limit)-in known manner-weakened cross the formation of high field intensity.In the present embodiment, second field control elements 23 connects 207 by means of electric welding and is connected with second metal parts 19.Selectively, second field control elements 23 also can with 19 solderings of second metal parts.
Fig. 3 shows other parts of the vacuum switch tube among Fig. 1 with the view that amplifies.The vacuum tightness ground, distolateral end that faces first crown cap 15 of first case member 3 and portion's section soldering of the flange ring-type of first metal parts 9.First metal parts 9 deviates from a lateral bending song of fixed contact 17 to form first field control elements 13 in portion's section of flange ring-type.In other words, first field control elements 13 is formed by the portion section bending of first metal parts 9.First metal parts 9 in the face of a lateral bending song of fixed contact 17 with first vapor shield 11.
At this, first field control elements 13 is installed in first groove 5 of first case member 3 of hollow cylinder basically with respect to the outer surface of first case member 3 with being absorbed in.And the maximum radius of described in this case rotational symmetric basically first field control elements 13 is less than the maximum radius on the surface on formation groove 5 borders of first case member 3.In other words, in the present embodiment, the maximum radius of rotational symmetric basically first field control elements 13 is less than the maximum radius of first case member 3.
Fig. 4 shows the details of other vacuum switch tubes with cutaway view, and it is similar to the details described among Fig. 2.Be not both with the description of Fig. 2, second metal parts 401 is equipped with one second field control elements 403 in the embodiment of Fig. 4, and wherein, described second field control elements 403 stops with the outer surface of first case member 3 and second case member 25 with flushing.Terminate in this with flushing and can be regarded as, the maximum radius of field control elements 403 is positioned at the plane of the outer surface of case member 3.In this design, second field control elements 403 does not radially protrude in the part of first case member 3 or second case member, 25 outer surfaces yet, therefore, has reduced the formation of surface discharge or arcing at this on the outer surface of case member 3 and 25.
The maximum radius that is designed to rotational symmetric basically second field control elements 403 equals the maximum radius on surface on formation second groove 27 borders of first case member 3.This radius is equivalent to the radius of first case member 3 in the present embodiment.Similarly, the maximum radius of second field control elements 403 equals the maximum radius on surface on formation the 3rd groove 26 borders of second case member 25.
Be that with other differences of the described execution mode of Fig. 2 in the execution mode of Fig. 4, second groove 7 and the 3rd groove 26 are not the filling insulating material with solid, also therefore for example do not have air but fill.
The invention also discloses a kind of vacuum switch tube, wherein, a field control elements is arranged on the groove of the case member of electric insulation.Thus, this field control elements does not radially protrude in the outer surface of vacuum switch tube, thereby along the formation that has reduced surface discharge or arcing on the outer surface of vacuum switch tube.Because field control elements does not have outstanding parts, can not produce undesirable high field intensity, and high field intensity can cause undesired discharging or undesirable voltage breakdown.Therefore, improved so-called vertical insulating properties (that is to say) along the insulating properties of the longitudinal extension direction of vacuum switch tube.Because field control elements does not have conductive component radially to protrude in the outer surface of vacuum switch tube, further improved so-called lateral isolation (vacuum switch tube and and the object of vacuum switch tube adjacent conductive between insulating properties, for example, the insulating properties between the vacuum switch tube of a vacuum switch tube and an adjacent setting in heterogeneous switchgear).In sum, the compressive resistance of the outside of vacuum switch tube is improved.
Claims (8)
1. a vacuum switch tube (1), it has, and at least one is columniform basically, the case member of electric insulation (3), described case member vacuum tightness ground is connected with a metal parts (9), wherein, described metal parts is provided with field control elements (13), it is characterized in that, described field control elements (13) is arranged in the groove (5) of described case member (3) like this, that is, described field control elements (13) is provided with being absorbed in or flushes with described outer surface with respect to described case member (3) outer surface.
2. according to the described vacuum switch tube of claim 1, it is characterized in that, described field control elements (13) is designed to rotation symmetry basically, and the maximum radius of described field control elements (13) is less than or equal to the maximum radius on surface on the described groove of formation (5) border of described case member (3).
3. according to claim 1 or 2 described vacuum switch tubes, it is characterized in that described case member (3) connects by means of soldering and is connected with described metal parts (9).
4. according to each described vacuum switch tube in the aforementioned claim, it is characterized in that described case member (3) is made by pottery.
5. according to each described vacuum switch tube in the aforementioned claim, it is characterized in that described field control elements (13) is especially made by copper or stainless steel by the material of conduction.
6. according to each described vacuum switch tube in the aforementioned claim, it is characterized in that the portion section bending of described field control elements (13) by described metal parts (9) forms or described field control elements (23) is connected with described metal parts (19) by means of soldering or electric welding.
7. according to each described vacuum switch tube in the aforementioned claim, it is characterized in that described field control elements (23) is designed to a ring by forming sheet metal, wherein, the curved edge of this metallic plate is to form circular edges (203,205).
8. according to each described vacuum switch tube in the aforementioned claim, it is characterized in that described groove (7,26) is used the insulating material (201) of solid at least in part, especially fills with silicones.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200910007474 DE102009007474B4 (en) | 2009-01-30 | 2009-01-30 | Vacuum interrupter |
| DE102009007474.0 | 2009-01-30 | ||
| PCT/EP2010/050457 WO2010086236A1 (en) | 2009-01-30 | 2010-01-15 | Vacuum interrupter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102292788A true CN102292788A (en) | 2011-12-21 |
Family
ID=41822398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800052805A Pending CN102292788A (en) | 2009-01-30 | 2010-01-15 | Vacuum interrupter |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2384513A1 (en) |
| CN (1) | CN102292788A (en) |
| DE (1) | DE102009007474B4 (en) |
| WO (1) | WO2010086236A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895445A (en) * | 2013-11-27 | 2016-08-24 | 赵牧青 | Vacuum switching tube having relatively high buffer effect |
| CN107275148A (en) * | 2016-04-05 | 2017-10-20 | Ls 产电株式会社 | Vacuum breaker for vacuum circuit breaker |
| CN108320994A (en) * | 2017-12-28 | 2018-07-24 | 毛红玲 | A kind of cylinder for vacuum interrupter |
| CN111480211A (en) * | 2017-12-11 | 2020-07-31 | 西门子股份公司 | Shielding element for vacuum interrupter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017222941A1 (en) * | 2017-12-15 | 2019-06-19 | Siemens Aktiengesellschaft | High voltage circuit breaker and method for electromagnetically shielding a vacuum interrupter in an insulator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4844309B1 (en) * | 1968-04-01 | 1973-12-24 | ||
| JPS60180028A (en) * | 1984-02-28 | 1985-09-13 | 株式会社東芝 | Vacuum bulb |
| US5118911A (en) * | 1989-08-01 | 1992-06-02 | Mitsubishi Denki Kabushiki Kaisha | High voltage vacuum insulating container |
| DE29717489U1 (en) * | 1997-09-30 | 1999-01-28 | Siemens Ag | Tube for use in the medium and high voltage range |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3143979A1 (en) * | 1981-11-05 | 1983-05-11 | Siemens AG, 1000 Berlin und 8000 München | Housing for a vacuum switching tube |
| DE3507949A1 (en) * | 1985-03-06 | 1986-09-11 | Siemens AG, 1000 Berlin und 8000 München | Contact arrangement for vacuum switches |
| EP1059650B1 (en) * | 1999-06-10 | 2004-04-21 | ABB Technology AG | Vacuum chamber |
| DE102007022875B4 (en) * | 2007-05-14 | 2009-04-09 | Siemens Ag | Housing for a vacuum interrupter and vacuum interrupter |
-
2009
- 2009-01-30 DE DE200910007474 patent/DE102009007474B4/en not_active Expired - Fee Related
-
2010
- 2010-01-15 EP EP10702266A patent/EP2384513A1/en not_active Withdrawn
- 2010-01-15 WO PCT/EP2010/050457 patent/WO2010086236A1/en active Application Filing
- 2010-01-15 CN CN2010800052805A patent/CN102292788A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4844309B1 (en) * | 1968-04-01 | 1973-12-24 | ||
| JPS60180028A (en) * | 1984-02-28 | 1985-09-13 | 株式会社東芝 | Vacuum bulb |
| US5118911A (en) * | 1989-08-01 | 1992-06-02 | Mitsubishi Denki Kabushiki Kaisha | High voltage vacuum insulating container |
| DE29717489U1 (en) * | 1997-09-30 | 1999-01-28 | Siemens Ag | Tube for use in the medium and high voltage range |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895445A (en) * | 2013-11-27 | 2016-08-24 | 赵牧青 | Vacuum switching tube having relatively high buffer effect |
| CN105895443A (en) * | 2013-11-27 | 2016-08-24 | 赵牧青 | Vacuum switching tube having relatively high buffer effect |
| CN105895442A (en) * | 2013-11-27 | 2016-08-24 | 赵牧青 | Vacuum switching tube for improving insulation performance |
| CN105895444A (en) * | 2013-11-27 | 2016-08-24 | 赵牧青 | Vacuum switching tube for improving uniformity of electric field distribution |
| CN105914092A (en) * | 2013-11-27 | 2016-08-31 | 赵牧青 | Vacuum switch tube capable of enhancing finished product rate |
| CN105914094A (en) * | 2013-11-27 | 2016-08-31 | 赵牧青 | Vacuum switch tube capable of enhancing finished product rate |
| CN107275148A (en) * | 2016-04-05 | 2017-10-20 | Ls 产电株式会社 | Vacuum breaker for vacuum circuit breaker |
| CN107275148B (en) * | 2016-04-05 | 2020-06-16 | Ls 产电株式会社 | Vacuum interrupter for vacuum circuit breaker |
| CN111415836A (en) * | 2016-04-05 | 2020-07-14 | Ls产电株式会社 | Vacuum interrupter for vacuum circuit breaker |
| CN111415836B (en) * | 2016-04-05 | 2022-12-06 | Ls产电株式会社 | Vacuum interrupter for vacuum circuit breaker |
| CN111480211A (en) * | 2017-12-11 | 2020-07-31 | 西门子股份公司 | Shielding element for vacuum interrupter |
| US11342142B2 (en) | 2017-12-11 | 2022-05-24 | Siemens Aktiengesellschaft | Shield element for a vacuum interrupter |
| CN108320994A (en) * | 2017-12-28 | 2018-07-24 | 毛红玲 | A kind of cylinder for vacuum interrupter |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102009007474A1 (en) | 2010-08-12 |
| EP2384513A1 (en) | 2011-11-09 |
| DE102009007474B4 (en) | 2011-04-28 |
| WO2010086236A1 (en) | 2010-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102292788A (en) | Vacuum interrupter | |
| CN103026444B (en) | Vacuum valve | |
| US8698034B2 (en) | Vacuum interrupter | |
| EP2787520A1 (en) | Vacuum chamber with a one-piece metallic cover for self-centering | |
| US3158722A (en) | Coil structure for producing a magnetic field in an electric circuit interrupter | |
| US9972466B2 (en) | Vacuum interrupter for a vacuum circuit breaker | |
| JP4653558B2 (en) | Vacuum valve | |
| JP5281975B2 (en) | Vacuum valve | |
| JP2011222401A (en) | Vacuum valve | |
| JP4703360B2 (en) | Vacuum valve | |
| CN111480211B (en) | Shielding element, vacuum interrupter, method for producing a shielding element and vacuum interrupter | |
| CN113474865A (en) | Vacuum circuit breaker | |
| CA2997640A1 (en) | Switching contact of a vacuum interrupter comprising supporting bodies | |
| JP5255416B2 (en) | Vacuum valve | |
| JP2012064416A (en) | Vacuum valve | |
| US20050199590A1 (en) | Ceramic tube for vacuum circuit breaker | |
| EP2618355A1 (en) | Vapor shield arrangement for vacuum switsching tube | |
| US9852858B2 (en) | Contact of vacuum interrupter | |
| US3292030A (en) | Electrode assemblies for surge diverters | |
| JP2010282837A (en) | Vacuum valve | |
| EP3133631B1 (en) | Vacuum valve | |
| CN207052522U (en) | A kind of vacuum interrupter anti-kink structure | |
| JP5525364B2 (en) | Vacuum valve | |
| CN204130437U (en) | Prevent turning round vacuum interrupter | |
| EP0948000A2 (en) | Shed insulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111221 |