CN1087097C - 用于断路器的密封装置及其制造方法 - Google Patents
用于断路器的密封装置及其制造方法 Download PDFInfo
- Publication number
- CN1087097C CN1087097C CN97197931A CN97197931A CN1087097C CN 1087097 C CN1087097 C CN 1087097C CN 97197931 A CN97197931 A CN 97197931A CN 97197931 A CN97197931 A CN 97197931A CN 1087097 C CN1087097 C CN 1087097C
- Authority
- CN
- China
- Prior art keywords
- sealing device
- package
- plug
- circuit breaker
- becket
- 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.)
- Expired - Fee Related
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
- H01H33/02—Details
-
- 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
-
- 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
- H01H33/6606—Terminal arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Joining Of Building Structures In Genera (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Manufacture Of Switches (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
断路器(12)的密封装置(10)包括:一个主体,它包括一个内腔(14)。所述内腔在其第一端包括一个用于断路器的空间。所述主体的第二端包括用于安装密封装置(10)的表面。一个插入组件(28)安装在第二端中,便于安装密封装置(10)。插入组件包括一个刚性连接件(30,32),和多个固定到刚性连接件(30,32)的紧固件(26)。
Description
发明背景
1.发明领域
本发明涉及高压断路器的密封装置。
2.相关技术
高压断路器一般安装在一个环氧树脂或瓷结构的密封装置的上端,所述密封装置包括用于支撑断路器和操作杆的内腔。
所述结构必须设计成防止“爬电”,即防止,由于表面污染凝聚和积累的结果,电荷沿结构的壁表面从高电势到接地电势的框架爬行放电。另外,所述结构必须设计成防止在断路器和底部间的直接放电。一般的规则是,防止爬电所需要的表面长度比防止直接放电所需要的长度长。另外,支撑结构一般比需要的高。
另外,环氧树脂密封装置的底部是用螺栓固定到框架上或支座的底端结构上。一般,在浇铸环氧树脂密封装置前带螺纹的螺母插入到浇铸的模中。然后制成的铸件包括多个螺母,用这些螺母通过螺栓能够将所述密封装置固定到框架上。然而,间或在一个或多个螺母丢掉或被置于错误角度时,便影响到制品的强度。另外,间或在负荷不均匀会使得插入的螺母被拔出时,因此也会减弱结构强度。
发明目的和概述
本发明的目的是利用一个设计,克服上述现有技术的缺点,在所述设计中,不必需产生一个比防止放电所需要的高度高的结构,就能够避免爬电。
本发明的另一目的是提供一个设计,它的结构比现有技术的简单,但具有增强的强度。
断路器的密封装置包括:一个主体,它包括一个内腔;所述内腔包括一个在其第一端的用于断路器的空间;所述主体的第二端包括一个用于安装密封装置的表面;一个插入组件安装在第二端,以便于安装密封装置;所述插入组件包括一个刚性连接件和多个固定到刚性连接件上的紧固件。
附图说明
图1是本发明断路器密封装置图;
图2是图1密封装置的一部分的机械应力分析图;
图3是图1密封装置内的电压分布图;
图4是图1密封装置内的电场分布图;
图5是图1密封装置中使用的插入组件的侧视图;
图6是图5的插入组件的平面图;
图7是在图5插入组件周围的电压分布图;
图8是在图5的插入组件周围的电场图;
图9是本发明的另一实施例的剖面图。
优选实施例
见图1,它示出断路器12的密封装置或支撑10。密封装置10包括内腔14,操纵杆(未示出)通过内腔将断路器12连接到在密封装置10下的框架16中的触发机构(未示出)。
密封装置10可以由环氧树脂铸造,或任何能够抵抗在断路器触发时产生的应力的合适材料铸造。在优选实施例中,使用环脂的预填充的热固化两组分环氧树脂形成密封装置。
如果在断路器12和框架16之间的距离不足,会发生所谓的放电现象,即电荷从断路器12跳向框架16。因此,断路器12和框架16之间的距离必须保持比预定距离大,即比根据状况和断路器12上的电压大小所决定的放电距离大。
另外,电荷会沿内腔14的内壁18或表面爬行。因此,壁18的长度应保持比一定距离大以防止爬电。一般防止爬电所需要的距离比放电距离大。因此,为了防止爬电,现有技术的结构设计成高度高于防止放电所需要的高度。
根据本发明,在内壁18中设计有盘旋20,用于增加内壁18的全长,使得爬电的可能性降低。由于盘旋20增加了壁的长度,所以可以不必使得密封装置10的高度高于避免放电所需要的高度就可避免爬电。
盘旋20可以有模制和机械加工所限的那样的宽度和深度。在一个优选实施例中,每个盘旋20约1.5英寸深,每个盘旋20增加约1英寸的爬电距离。
盘旋20可以在铸造过程中通过向内腔14插入一个柱塞或芯子铸造而成。将盘旋20的壁22设计成基本平行于内腔14的内壁18,柱塞易于插入和抽出。
内腔14的设计一个附加益处是,由于盘旋20,使得内壁由多个重叠的套状部分24构成。因此,如果在内腔14的里面封闭的水分冷凝,造成沿壁18向下流的水,水将从每个盘旋滴落,因此防止会造成爬电的水的连续流股。每个套24的作用如一伞,防止处在下面的套24变湿。
在一个优选实施例中,腔14的壁18包括两个盘旋20。根据断路器12的具体用途,也可以使用其他的盘旋数量。
另外,在铸造时使用一个带螺纹的柱塞可以增加整个壁的长度,可以在铸造后旋转柱塞使得它从铸件脱扣而从模的空腔抽出。铸造到内壁18中的螺纹118可以延伸大于360度,并可以是1.5英寸深。图9是带有带螺纹的柱塞形成的密封装置的剖面图。
图2示出图1的密封装置10的一部分的应力分析。如图所示,在25磅的悬臂负荷加到从密封装置的顶部延伸出来的臂的一端时,机械应力的峰值约为5×105牛顿/平方米。该应力充分低于环氧树脂的强度。另外,盘旋20没有损坏密封装置10的强度。
图3和图4示出密封装置10的电应力。具体地,图3示出腔14周围的电压分布。图4示出电场(电应力),即腔14的电压梯度变化。
为了支撑密封装置10和断路器12,在铸造过程中带螺纹的螺母26插入到密封装置10的底部。最好,螺母26在圆形中均等地间隔开。然后用螺栓(未示出)将密封装置10上紧到框架16上。
为了便于最终产品的组装和增加强度,将螺母26预先布置在一个插入组件28。组件28最好包括一对同心布置的环30和32。参见图5和6。螺母26可以焊接或用其他方法固定到环30和32上。在一个优选实施例中,八个螺母26在同心环30和32之间以45度角等距离的间隔开。插入组件28的近似直径是4.6英寸。
在铸造密封装置10前可将插入组件28插入到一个模中,如图2所示,在环30和32附近测得的应力值相对较低。
图7示出带有插入组件28的密封装置10用螺栓固定到一个也有高压的结构上时的电压分布。图8示出围绕环30和32的电场(电应力)。如所示,环30和32起到将电场平缓在击穿值以下。
已就优选的实施例进行了图示和说明,应理解,根据上述原理,在不偏离本发明的精神和范围的情况下,本发明会有多种的实施方式。
Claims (15)
1.一种用于断路器的密封装置,包括:
一个主体,它包括一个内腔;
所述内腔在其第一端包括一个用于断路器的空间;
所述主体的第二端包括用于安装所述密封装置的表面;
一个嵌在所述第二端内的插入组件,便于安装密封装置;
所述插入组件包括一个刚性连接件和多个固定到所述刚性连接件上的紧固件。
2.根据权利要求1所述的密封装置,其特征在于,刚性连接件包括一个金属环。
3.根据权利要求1所述的密封装置,其特征在于,刚性连接件包括两个同心金属环。
4.根据权利要求2所述的密封装置,其特征在于,紧固件是带螺纹的螺母,并且焊接到金属环上。
5.根据权利要求3所述的密封装置,其特征在于,紧固件是带螺纹的螺母,并且焊接到金属环上。
6.根据权利要求1所述的密封装置,其特征在于,紧固件围绕金属环均匀间隔开。
7.一种制造用于断路器的密封装置的方法,包括下述步骤:
设置一个插入组件,它包括多个固定到刚性连接件上的紧固件;以及
围绕所述插入组件模制密封装置的主体。
8.根据权利要求7所述的方法,其特征在于,所述插入组件包括一个金属环,并且所述紧固件是焊接到金属环上的带螺纹的螺母。
9.根据权利要求7所述的方法,其特征在于,所述插入组件包括两个同心的金属环,并且所述紧固件是焊接到金属环上的带螺纹的螺母。
10.根据权利要求7所述的方法,特征在于,还包括在所述密封装置的内壁中铸造盘旋的步骤。
11.根据权利要求8所述的方法,特征在于,还包括在所述密封装置的内壁中铸造盘旋的步骤。
12.根据权利要求9所述的方法,特征在于,还包括在所述密封装置的内壁中铸造盘旋的步骤。
13.一种用于断路器的密封装置,包括:
一个主体,它包括限定一内腔的壁;
所述内腔在主体的第一端包括一个用于断路器的空间;
所述壁在主体的第二端包括一个将所述密封装置安装到一个框架上的表面;
一个嵌在所述第二端的壁内的插入组件,便于将密封装置安装到框架上;
插入组件包括一个刚性连接件,和多个固定到所述刚性连接件上的紧固件,插入组件嵌在壁内,使得多个紧固件中的每个从内腔间隔开,并与表面齐平。
14.根据权利要求1所述的密封装置,其特征在于,插入组件模制在第二端内。
15.根据权利要求7所述的方法,其特征在于,密封装置是高压断路器的密封装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/713,865 US5736705A (en) | 1996-09-13 | 1996-09-13 | Grading ring insert assembly |
US08/713,865 | 1996-09-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1230285A CN1230285A (zh) | 1999-09-29 |
CN1087097C true CN1087097C (zh) | 2002-07-03 |
Family
ID=24867850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN97197931A Expired - Fee Related CN1087097C (zh) | 1996-09-13 | 1997-09-08 | 用于断路器的密封装置及其制造方法 |
Country Status (13)
Country | Link |
---|---|
US (1) | US5736705A (zh) |
EP (1) | EP0962023B1 (zh) |
JP (1) | JP3343128B2 (zh) |
KR (1) | KR100294721B1 (zh) |
CN (1) | CN1087097C (zh) |
BR (1) | BR9712041A (zh) |
CA (1) | CA2264917C (zh) |
DE (1) | DE69721829D1 (zh) |
ES (1) | ES2196363T3 (zh) |
ID (1) | ID25840A (zh) |
MY (1) | MY117555A (zh) |
TW (1) | TW366509B (zh) |
WO (1) | WO1998011580A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108258608A (zh) * | 2017-12-15 | 2018-07-06 | 北京双杰电气股份有限公司 | 一种固体绝缘计量柜 |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6888086B2 (en) * | 2002-09-30 | 2005-05-03 | Cooper Technologies Company | Solid dielectric encapsulated interrupter |
DE10249614B3 (de) * | 2002-10-21 | 2004-05-19 | Siemens Ag | Isolierstoffgehäuse mit Rippenkontur |
US7384287B2 (en) * | 2005-08-08 | 2008-06-10 | Cooper Technologies Company | Apparatus, system and methods for deadfront visible loadbreak |
US7572133B2 (en) * | 2005-11-14 | 2009-08-11 | Cooper Technologies Company | Separable loadbreak connector and system |
US7488916B2 (en) * | 2005-11-14 | 2009-02-10 | Cooper Technologies Company | Vacuum switchgear assembly, system and method |
US7772515B2 (en) * | 2005-11-14 | 2010-08-10 | Cooper Technologies Company | Vacuum switchgear assembly and system |
DE102007007695A1 (de) * | 2007-02-09 | 2008-08-14 | Siemens Ag | Isolierstoff-Gussgehäuse, Verfahren zu seiner Herstellung, Schaltervorrichtung und Verfahren zu deren Herstellung |
US20080192409A1 (en) * | 2007-02-13 | 2008-08-14 | Paul Michael Roscizewski | Livebreak fuse removal assembly for deadfront electrical apparatus |
US7494355B2 (en) * | 2007-02-20 | 2009-02-24 | Cooper Technologies Company | Thermoplastic interface and shield assembly for separable insulated connector system |
US7854620B2 (en) * | 2007-02-20 | 2010-12-21 | Cooper Technologies Company | Shield housing for a separable connector |
US20090100675A1 (en) * | 2007-02-20 | 2009-04-23 | Cooper Technologies Company | Method for manufacturing a shield housing for a separable connector |
US7950939B2 (en) * | 2007-02-22 | 2011-05-31 | Cooper Technologies Company | Medium voltage separable insulated energized break connector |
US7666012B2 (en) | 2007-03-20 | 2010-02-23 | Cooper Technologies Company | Separable loadbreak connector for making or breaking an energized connection in a power distribution network |
US7633741B2 (en) * | 2007-04-23 | 2009-12-15 | Cooper Technologies Company | Switchgear bus support system and method |
US7568927B2 (en) * | 2007-04-23 | 2009-08-04 | Cooper Technologies Company | Separable insulated connector system |
US7661979B2 (en) | 2007-06-01 | 2010-02-16 | Cooper Technologies Company | Jacket sleeve with grippable tabs for a cable connector |
US8450630B2 (en) * | 2007-06-05 | 2013-05-28 | Cooper Technologies Company | Contact backing for a vacuum interrupter |
US7781694B2 (en) * | 2007-06-05 | 2010-08-24 | Cooper Technologies Company | Vacuum fault interrupter |
US7695291B2 (en) | 2007-10-31 | 2010-04-13 | Cooper Technologies Company | Fully insulated fuse test and ground device |
US7905735B2 (en) * | 2008-02-25 | 2011-03-15 | Cooper Technologies Company | Push-then-pull operation of a separable connector system |
US8056226B2 (en) | 2008-02-25 | 2011-11-15 | Cooper Technologies Company | Method of manufacturing a dual interface separable insulated connector with overmolded faraday cage |
US7670162B2 (en) | 2008-02-25 | 2010-03-02 | Cooper Technologies Company | Separable connector with interface undercut |
US7950940B2 (en) * | 2008-02-25 | 2011-05-31 | Cooper Technologies Company | Separable connector with reduced surface contact |
US8109776B2 (en) * | 2008-02-27 | 2012-02-07 | Cooper Technologies Company | Two-material separable insulated connector |
US7811113B2 (en) * | 2008-03-12 | 2010-10-12 | Cooper Technologies Company | Electrical connector with fault closure lockout |
US7958631B2 (en) * | 2008-04-11 | 2011-06-14 | Cooper Technologies Company | Method of using an extender for a separable insulated connector |
US7878849B2 (en) * | 2008-04-11 | 2011-02-01 | Cooper Technologies Company | Extender for a separable insulated connector |
CN101354933B (zh) * | 2008-09-23 | 2011-12-21 | 铜川供电局 | 复合绝缘子的内电极和均压环配置法及其复合绝缘子 |
GB2574716B (en) * | 2017-05-03 | 2020-08-12 | Tavrida Electric Holding Ag | Improved vacuum circuit breaker |
US10916392B2 (en) | 2018-09-17 | 2021-02-09 | Eaton Intelligent Power Limited | Reinforcement structure for a vacuum interrupter |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3959577A (en) * | 1974-06-10 | 1976-05-25 | Westinghouse Electric Corporation | Hermetic seals for insulating-casing structures |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3159731A (en) * | 1961-02-07 | 1964-12-01 | Joslyn Mfg & Supply Co | Switch with plural actuator devices having improved overtravel takeup for plural electrical interrupters |
US3189715A (en) * | 1962-05-21 | 1965-06-15 | Jennings Radio Mfg Corp | Internal shield and seal structure for vacuum sealed switch envelope |
US3275775A (en) * | 1963-11-29 | 1966-09-27 | Jennings Radio Mfg Corp | Hermetically sealed relay having high and low voltage contact assemblies in a common chamber |
US3471669A (en) * | 1968-01-16 | 1969-10-07 | Chance Co Ab | Encapsulated switch assembly for underground electric distribution service |
US3626123A (en) * | 1970-11-19 | 1971-12-07 | Allis Chalmers Mfg Co | Vacuum-type electrical device |
CH578783A5 (zh) * | 1974-01-31 | 1976-08-13 | Siemens Ag | |
US3955167A (en) * | 1975-01-08 | 1976-05-04 | Mcgraw-Edison Company | Encapsulated vacuum fuse assembly |
US4168414A (en) * | 1975-03-06 | 1979-09-18 | Mcgraw-Edison Company | Protective switch device and operating mechanism therefor |
US4150270A (en) * | 1976-02-23 | 1979-04-17 | Mcgraw-Edison Company | Encapsulated high voltage switching device |
US4568804A (en) * | 1983-09-06 | 1986-02-04 | Joslyn Mfg. And Supply Co. | High voltage vacuum type circuit interrupter |
FR2679695B1 (fr) * | 1991-07-26 | 1993-09-24 | Alsthom Gec | Ampoule sous vide pourvue d'une isolation electrique. |
FR2682527B1 (fr) * | 1991-10-10 | 1993-11-19 | Gec Alsthom Sa | Disjoncteur a enveloppe en materiau composite equipe d'un dispositif de surveillance. |
US5585611A (en) * | 1994-03-31 | 1996-12-17 | Abb Power T&D Company Inc. | Interrupter assembly |
US5597992A (en) * | 1994-12-09 | 1997-01-28 | Cooper Industries, Inc. | Current interchange for vacuum capacitor switch |
-
1996
- 1996-09-13 US US08/713,865 patent/US5736705A/en not_active Expired - Lifetime
-
1997
- 1997-08-27 MY MYPI97003955A patent/MY117555A/en unknown
- 1997-09-08 EP EP97940857A patent/EP0962023B1/en not_active Expired - Lifetime
- 1997-09-08 ES ES97940857T patent/ES2196363T3/es not_active Expired - Lifetime
- 1997-09-08 JP JP51371498A patent/JP3343128B2/ja not_active Expired - Fee Related
- 1997-09-08 ID IDW990182D patent/ID25840A/id unknown
- 1997-09-08 WO PCT/US1997/015670 patent/WO1998011580A1/en active IP Right Grant
- 1997-09-08 BR BR9712041A patent/BR9712041A/pt not_active IP Right Cessation
- 1997-09-08 CA CA002264917A patent/CA2264917C/en not_active Expired - Fee Related
- 1997-09-08 CN CN97197931A patent/CN1087097C/zh not_active Expired - Fee Related
- 1997-09-08 DE DE69721829T patent/DE69721829D1/de not_active Expired - Lifetime
- 1997-09-12 TW TW086113284A patent/TW366509B/zh not_active IP Right Cessation
-
1999
- 1999-03-12 KR KR1019997002129A patent/KR100294721B1/ko not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3959577A (en) * | 1974-06-10 | 1976-05-25 | Westinghouse Electric Corporation | Hermetic seals for insulating-casing structures |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108258608A (zh) * | 2017-12-15 | 2018-07-06 | 北京双杰电气股份有限公司 | 一种固体绝缘计量柜 |
Also Published As
Publication number | Publication date |
---|---|
EP0962023A4 (zh) | 1999-12-08 |
CN1230285A (zh) | 1999-09-29 |
ID25840A (id) | 2000-11-09 |
KR20000036106A (ko) | 2000-06-26 |
BR9712041A (pt) | 1999-08-24 |
KR100294721B1 (ko) | 2001-08-07 |
US5736705A (en) | 1998-04-07 |
CA2264917C (en) | 2003-04-15 |
JP2000502835A (ja) | 2000-03-07 |
AU713654B2 (en) | 1999-12-09 |
MY117555A (en) | 2004-07-31 |
EP0962023A1 (en) | 1999-12-08 |
JP3343128B2 (ja) | 2002-11-11 |
WO1998011580A1 (en) | 1998-03-19 |
CA2264917A1 (en) | 1998-03-19 |
AU4254097A (en) | 1998-04-02 |
ES2196363T3 (es) | 2003-12-16 |
DE69721829D1 (de) | 2003-06-12 |
TW366509B (en) | 1999-08-11 |
EP0962023B1 (en) | 2003-05-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1087097C (zh) | 用于断路器的密封装置及其制造方法 | |
CN1076858C (zh) | 防止爬电的竖直套 | |
JP5554746B2 (ja) | ガス絶縁母線及びガス絶縁母線の異物除去方法 | |
TW201013727A (en) | Vacuum switch gear and height adjusting method thereof | |
KR100431252B1 (ko) | 가공 개폐기 및 변압기용 폴리머 부싱 | |
EP0457081B1 (de) | Isolator | |
CN1267938C (zh) | 用于制造高压绝缘套管的方法 | |
RU2372681C1 (ru) | Опорный композитный изолятор | |
CN102263384A (zh) | 用于断路器的开关箱绝缘布置 | |
AU713654C (en) | Grading ring insert assembly | |
US4562303A (en) | Disc-type insulator with a cast-in electrode and process for its manufacture | |
RU2345432C1 (ru) | Высоковольтный трансформатор тока наружной установки | |
CN1217464C (zh) | 带安装支架的气体绝缘开关装置 | |
US20120223806A1 (en) | Insulation structure for resistor grids | |
CA1329234C (en) | Metal-enclosed, pressurized gas-insulated high-voltage switching installation with insulated grounding switch | |
CN2638308Y (zh) | 预制型干式电缆终端 | |
JP2001067960A (ja) | 電路支持用絶縁スペーサ | |
CN1199946A (zh) | 封闭在金属壳体内的气体绝缘的开关装置 | |
CN2657182Y (zh) | 户外三相高压隔离开关 | |
CN107393662A (zh) | 一种具有vfto抑制功能的锥形绝缘子 | |
RU2094885C1 (ru) | Разъединитель | |
JPH0333151Y2 (zh) | ||
EP2758971B1 (en) | Surge arrester arrangement | |
CN113345753A (zh) | 固体绝缘防护的接地开关及使用该接地开关的开关柜 | |
JPH1080027A (ja) | 絶縁スペ−サ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020703 Termination date: 20140908 |
|
EXPY | Termination of patent right or utility model |