EP2467863B1 - Appareil de commutation - Google Patents

Appareil de commutation Download PDF

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Publication number
EP2467863B1
EP2467863B1 EP09782030.2A EP09782030A EP2467863B1 EP 2467863 B1 EP2467863 B1 EP 2467863B1 EP 09782030 A EP09782030 A EP 09782030A EP 2467863 B1 EP2467863 B1 EP 2467863B1
Authority
EP
European Patent Office
Prior art keywords
drive shaft
switching device
switch
circuit breaker
rotation
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.)
Not-in-force
Application number
EP09782030.2A
Other languages
German (de)
English (en)
Other versions
EP2467863A1 (fr
Inventor
Gerhard Drechsler
Tushar Maruti Rane
Rolf Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=42110034&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2467863(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2467863A1 publication Critical patent/EP2467863A1/fr
Application granted granted Critical
Publication of EP2467863B1 publication Critical patent/EP2467863B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing 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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • H01H33/125—Load break switches comprising a separate circuit breaker
    • 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
    • H01H33/42—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/04—Interlocking mechanisms
    • H01H31/10—Interlocking mechanisms for interlocking two or more 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
    • H01H33/666—Operating arrangements
    • H01H33/6661—Combination with other type of switch, e.g. for load break switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches

Definitions

  • the invention relates to a switching device having at least one power or load switch, a grounding switch and a circuit breaker, wherein the earthing switch is coupled to a first straight drive shaft and the circuit breaker is coupled to a second straight drive shaft.
  • Switchgear of the type mentioned are, for example, from the US 2008/308531 A1 , of the EP 0924 827 A1 or the DE 10 2004 015 386 A1 known. As competition for the switchgear market continues to grow, there is a need for cost-effective switching devices.
  • the invention has for its object to provide a switching device, which can be produced inexpensively and has a compact design.
  • the power or load switch is coupled to a third straight drive shaft, wherein the first drive shaft and the second drive shaft parallel to each other and the third drive shaft parallel to the first drive shaft and parallel extends to the second drive shaft.
  • the earthing switch is coupled to a first exclusively straight drive shaft and the circuit breaker is coupled to a second exclusively straight drive shaft.
  • the earthing switch is driven by a first exclusively straight drive shaft, while the disconnector is driven by a second exclusively straight drive shaft.
  • the coupling of the earthing switch or the disconnector, each with a single exclusively straight drive shaft allows a simple construction of the switching device, since no elaborate deflection or gear for connecting a plurality of drive shafts, which are aligned in different directions, are required for the earthing switch or the disconnector.
  • Such a simply constructed switching device can be realized inexpensively.
  • the power and the load switch is coupled to a third exclusively straight drive shaft or in other words: the power or the load switch is driven by a third exclusively straight drive shaft.
  • This also contributes to the simple design of the switching device, as an exclusively straight drive shaft - compared to drive means having a plurality of arranged in different directions drive shafts - simple and therefore cost can be realized.
  • a parallel to the second drive shaft extending first drive shaft advantageously leads to a particularly simple construction of the switching device, in which in particular the required space is low.
  • the parallel alignment of the third drive shaft to the first and / or second drive shaft also leads to a very simple construction of the switching device, since the parallel drive shafts do not interfere or hinder each other.
  • the switching device can be designed so that the first drive shaft and the second drive shaft are independently rotatable.
  • the switching device can be realized in such a way that the power or load switch is arranged between the first drive shaft and the second drive shaft. This also makes a simple construction possible, since the power or load switch (which usually represents a large and heavy component) is arranged centrally between the first drive shaft and the second drive shaft, which allows a favorable center of gravity distribution.
  • the switching device can be designed such that the first drive shaft is coupled via a crank mechanism with the earthing switch and / or the second drive shaft is coupled via a crank mechanism with the circuit breaker.
  • the use of a cranking operation for coupling the first drive shaft to the earthing switch and / or the second drive shaft to the disconnecting switch is particularly advantageous because, on the one hand such a crank mechanism can be easily realized, on the other hand, in such a crank mechanism already with a rotation of the drive shaft is provided by only 180 degrees of the full stroke for the operation of the earthing switch and / or disconnector.
  • a rotation of the respective shaft is already sufficient by 180 degrees in order to turn the earthing switch and / or the disconnecting switch completely on or off.
  • crank mechanism is advantageous because such a transmission has a so-called dead center position in both end positions of the 180-degree rotation of the drive shaft, d. H. there is a self-locking thrust transmission, which can absorb large forces both in the fully turned off state of the respective switch as well as in the fully on state of the respective switch and thus counteracts an unintentional leaving the closed or open switch position.
  • the switching device may further be configured such that it has a locking device which blocks rotation of the second drive shaft in a first locking position, which blocks rotation of the first drive shaft in a second locking position and which in a third locking position rotation of the first drive shaft and a Rotation of the second drive shaft blocked.
  • this locking device can optionally be the first drive shaft and / or the second drive shaft be blocked, thus preventing inadvertent actuation of the earthing switch and / or the circuit breaker.
  • the switching device may be configured such that the locking device is arranged at each end of the first drive shaft, the second drive shaft and the third drive shaft.
  • the locking device can advantageously be easily realized, since the locking device only the unintentional rotation of the drive shafts must be prevented.
  • this locking device can be replaced by a differently constructed locking device, if desired. This results in a modular construction of the switching device, can be easily and inexpensively a variety of variants of the switching device can be realized.
  • the switching device may also include a display device (switch position indicator) which indicates the position of the first drive shaft and / or the second drive shaft.
  • switch position indicator indicates the position of the first drive shaft and / or the second drive shaft.
  • the switching device can be realized so that the display device is arranged at each end of the first drive shaft and the second drive shaft. Due to the arrangement of the display device at each end of the first drive shaft and the second drive shaft results - similar to the locking device - a building block-like structure of the switching device, because the display device easily and without significant structural changes the rest of the switching device can be replaced by another display device.
  • the switching device can also be designed so that the earthing switch is arranged on one side of the power or load switch and the disconnecting switch is arranged on the opposite side of the power or load switch.
  • Such an arrangement is particularly advantageous because the length of the current-carrying paths within the switching device is minimized by the symmetrical arrangement of the earthing switch on one side of the power or load switch and the disconnector on the opposite side of the power or load switch.
  • FIG. 1 schematically an overview diagram of an embodiment of a switching device 100 is shown, wherein the circuit diagram represents only one phase of the three-phase switching device.
  • a bus 101 illustrated which electrical current leads to the switching device.
  • the electrical current is passed through a symbolically shown as a rectangle implementation 103 of a busbar portion of the switching device to a switching range of the switching device and passes to a circuit breaker 105.
  • the circuit breaker 105 connects the busbar 101 with a contact of a circuit breaker 107, wherein the circuit breaker in the embodiment as a vacuum interrupter is realized.
  • the other contact of the circuit breaker 107 is connected via a further passage 109 with a cable 111, which is located in the cable portion of the switching device.
  • the contact of the circuit breaker 107 connected to the circuit breaker 105 is further connected to a grounding switch 113.
  • the earthing switch 113 serves to ground the contact of the circuit breaker connected to this disconnecting switch 105 when the disconnecting switch 105 is open
  • the bus bar 101 is located in the busbar area of the switching device, which is designed as a busbar module.
  • This busbar module is connected via the feedthrough 103 to the switching region of the switching device.
  • This switching portion is configured as a power switch module in which the power switch 107, the disconnect switch 105, and the ground switch 113 are located.
  • This power switch module is connected via the feedthrough 109 to a cable module housing the cable connections and cables 111.
  • the busbars, switches or cables for all three phases of the electrical current are located in the exemplary embodiment.
  • FIG. 2 is a part of the switching device 100 in a partially disassembled state shown in a three-dimensional view.
  • FIG. 1 To recognize current path shown, which of a in the upper part of the FIG. 2 illustrated terminal 201 for the busbar 101 via the feedthrough 103, the circuit breaker 105, the power switch 107, the implementation 109 to a in the lower part of FIG. 2 shown cable connection 203 out.
  • the shows FIG. 2 essentially the switch room, wherein the housing is not shown and some parts have been omitted for the sake of clarity.
  • the switching device comprises three phases L1, L2 and L3, which are constructed substantially the same. The easiest way to recognize the structure at phase L1, since in this phase L1 support parts are not shown.
  • the switching device 100 has a first, exclusively straight drive shaft 205, which is coupled to the grounding switch 113.
  • the switching device has a second, exclusively straight drive shaft 207, which is coupled to the disconnect switch 105.
  • the switching device has a third exclusively straight drive shaft 209, which is coupled to the power switch 107.
  • the first drive shaft 205 is used exclusively for driving the earthing switch 113, the second drive shaft 207 exclusively for driving the disconnecting switch 105, and the third drive shaft 209 exclusively for driving the power switch 107.
  • the first drive shaft 205, the second drive shaft 207 and the third drive shaft 209 are each independently rotatable and parallel to each other.
  • the power switch 107 is disposed between the first drive shaft 205 and the second drive shaft 207.
  • the first drive shaft 205 is connected via a crank gear to the earthing switch 113 coupled. This crank mechanism is better seen in Figures 3 and 5.
  • the second drive shaft is coupled via a crank mechanism 211 to the disconnect switch 105.
  • the earthing switch 113 is disposed on one side of the power switch 107 and the disconnecting switch 105 on the other side of the power switch 107.
  • the circuit breaker 105 has a fixed sleeve-shaped disconnect contact 213, a disconnect pin 215 and a disconnect pin guide 217.
  • the separating bolt 215 is axially longitudinally movable. He touches in the illustrated state, the fixed disconnector contact 213, thus the circuit breaker 105 is closed in the illustrated state.
  • the circuit breaker 105 is driven via a rigid insulator 219 of a coupling rod 211 of the crank mechanism, wherein the insulator 219 and the coupling rod 211 are integrally formed.
  • the crank gear is connected to the second, exclusively straight drive shaft 207 which drives or operates the disconnect switch 105.
  • One end of the second drive shaft 207 is connected to a locking device 230, with the u. a. the second drive shaft 207 locks, d. H. can be blocked.
  • the locking device 230 has three locking positions: In a first locking position, rotation of the first drive shaft 205 is enabled, whereas rotation of the second drive shaft 207 is blocked. In the second locking position, rotation of the second drive shaft 207 is enabled with rotation of the first drive shaft 205 blocked. In the third Locking position, a rotation of the first drive shaft 205 and the second drive shaft 207 are blocked.
  • the locking device 230 is arranged in each case at one end of the first, second and third drive shaft.
  • the locking device 230 comprises an actuating slide 234 which is located in the in FIG. 2 shown position in a middle sliding position, which is the third locking position associated.
  • the locking device 230 may also be designed so that it blocks a rotation of the second drive shaft 207 and a rotation of the third drive shaft 209 in a first locking position and allows rotation of the first drive shaft 205, in a second locking position rotation of the first drive shaft 205 and blocks rotation of the third drive shaft 209 and allows rotation of the second drive shaft 207 and, in a third lock position, blocks rotation of the first drive shaft 205 and rotation of the second drive shaft 207 and allows rotation of the third drive shaft 209.
  • a display device 238 (switching position display) is realized, which indicates the respective current position of the first, second and third drive shaft and thus the current position of the earthing switch, the circuit breaker and the circuit breaker.
  • This display device has display areas 238, which are openings in a cover plate, behind which, depending on the rotational position of the first drive shaft 205 and the second drive shaft 207 different colored display elements are visible.
  • the electrical current is passed to the power switch 107 via the feedthrough 103, the disconnect switch 105 and via flexible current bands 250.
  • the circuit breaker 107 is a vacuum interrupter 107 known as such.
  • This vacuum interrupter 107 has a fixed contact which is electrically connected to the cable terminal 203 via the leadthrough 109.
  • the moving contact of the vacuum interrupter 107 is electrically connected to the current band 250 and is moved mechanically via a designed as an isolator pull / push rod 252 in the axial direction of the vacuum interrupter.
  • a device for stroke adjustment 254 is arranged between moving contact of the vacuum interrupter 107 and the push / pull rod 252, a device for stroke adjustment 254 is arranged.
  • the pull / push rod 252 is actuated by means of a rocker arm 256 attached to the third drive shaft 209.
  • the third drive shaft 209 is driven by means of a drive 258, which is a magnetic drive in the exemplary embodiment.
  • the drive 258 could also be configured differently, for example as a spring-loaded drive.
  • the drive 258 moves by means of another rocker arm 260, the third drive shaft 209 by only a few degrees of rotational movement. This rotational movement is sufficient to close or open the circuit breaker 107.
  • the moving contact of the power switch 107 is further electrically connected via the current band 250 to an earthing contact 262 of the earthing switch 113.
  • the grounding switch 113 further has a grounding ruler 264, which is guided vertically displaceably in a guide 266.
  • the grounding ruler 264 is electrically connected to ground potential. In the illustrated state, the grounding ruler 264 does not touch the earth contact 262, thus, in the illustrated state, the earthing switch 113 is opened.
  • Erderlineal 264 is a shorting bridge that connects the earth contacts 262 of all three phases L1, L2 and L3 together and to ground potential in the on state of the earthing switch.
  • FIG. 3 is a side view of the switching device 100 viewed in the direction of the grounding switch 113.
  • the Erderlineal 264 is mounted in the guides 266 slidingly movable and is driven by a coupling rod 300 of a crank gear from the first drive shaft 205.
  • the Erderlineal 264 is thereby pushed by two simultaneously moving coupling rods 300 of two crank gear up or down.
  • the Erder ruler 264 comes into electrical contact with the 3 ErderWalleten 262 of the three phases L1, L2 and L3.
  • Earth electrode 264 then connects the earth contacts 262 of all three phases L1, L2 and L3 to each other and to ground potential ,
  • the first drive shaft 205 is driven in the embodiment by means of a crank which can be pluggable connected to the right end of the first drive shaft 205 (in the FIG. 3 not shown). In other embodiments, however, the first drive shaft 205 can also be driven by means of other drives, for example by means of a motor drive. The same applies to the second drive shaft 207, which in the FIG. 3 is covered by the first drive shaft 205.
  • FIG. 4 is the side of the switching device 100 shown in a further side view, on which the circuit breaker 105 is arranged. It is easy to see how the separating bolt 215 is driven by the coupling rod 211 from the second drive shaft 207.
  • FIG. 5 shows a sectional view through the switching device 100 along the sectional plane VV of FIG. 3 ,
  • the first crank mechanism can be seen well, which connects the second drive shaft 207 to the linear slide-guided separating bolt 215 by means of the coupling rod 211.
  • the second crank mechanism can be seen, which connects by means of the coupling rod 300, the first drive shaft 205 with the linear sliding-guided Erderlineal 264.
  • the earth contact 262 can be seen, into which the grounding ruler 264 retracts when closing the earthing switch 113.
  • the earthing switch is coupled to a first straight drive shaft and the disconnector is coupled to a second straight drive shaft.
  • the power switch may be disposed between the first drive shaft and the second drive shaft, the two drive shafts may be aligned parallel to each other.
  • the circuit breaker may be coupled to a third straight drive shaft which may be parallel to the first drive shaft and the second drive shaft.
  • a locking device can moreover be attached to the ends of these two shafts in a particularly simple manner, whereby the first drive shaft, the second drive shaft or also the third drive shaft can be blocked with this locking device.
  • Such a switching device can therefore be very simple and therefore inexpensive to manufacture and maintain.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (9)

  1. Appareil (100) de commutation qui a au moins un disjoncteur ou un interrupteur (107), un sectionneur (113) de mise à la terre et un sectionneur (105), dans lequel le sectionneur (113) de mise à la terre est couplé à un premier arbre (205) d'entraînement droit et le sectionneur (105) est couplé à un deuxième arbre (207) d'entraînement droit,
    caractérisé en ce que
    le disjoncteur ou l'interrupteur (107) est couplé à un troisième arbre (209) d'entraînement droit, le premier arbre (205) d'entraînement et le deuxième arbre (207) d'entraînement s'étendant parallèlement entre eux et le troisième arbre (209) d'entraînement s'étendant parallèlement au première arbre (205) d'entraînement et au deuxième arbre (207) d'entraînement.
  2. Appareil de commutation suivant la revendication 1,
    caractérisé en ce que
    le premier arbre (205) d'entraînement et le deuxième arbre (207) d'entraînement peuvent tourner indépendamment l'un de l'autre.
  3. Appareil de commutation suivant l'une des revendications 1 ou 2,
    caractérisé en ce que le disjoncteur ou l'interrupteur (107) est monté entre le premier arbre (205) d'entraînement et le deuxième arbre (207) d'entraînement.
  4. Appareil de commutation suivant l'une des revendications précédentes,
    caractérisé en ce que
    le premier arbre (205) d'entraînement est couplé au sectionneur (113) de mise à la terre par un mécanisme à bielle manivelle et/ou
    le deuxième arbre (207) d'entraînement est couplé au sectionneur (105) par un mécanisme à bielle manivelle.
  5. Appareil de commutation suivant l'une des revendications précédentes,
    caractérisé en ce
    qu'il a un dispositif (230) de verrouillage qui, dans une première position de verrouillage, bloque une rotation du deuxième arbre (207) d'entraînement qui, dans une deuxième position de verrouillage, bloque une rotation du premier arbre (205) d'entraînement et qui, dans une troisième position de verrouillage, bloque une rotation du premier arbre (205) d'entraînement et une rotation du deuxième arbre (207) d'entraînement.
  6. Appareil de commutation suivant l'une des revendications précédentes,
    caractérisé en ce que
    le dispositif (230) de verrouillage est monté respectivement à un bout du premier arbre (205) d'entraînement, du deuxième arbre (207) d'entraînement et du troisième arbre (209) d'entraînement.
  7. Appareil de commutation suivant l'une des revendications précédentes,
    caractérisé en ce
    qu'il a un dispositif (238) d'indication qui indique la position du premier arbre (205) d'entraînement et/ou du deuxième arbre (207) d'entraînement.
  8. Appareil de commutation suivant l'une des revendications précédentes,
    caractérisé en ce que
    le dispositif (238) d'indication est monté respectivement à un bout du premier arbre (205) d'entraînement et du deuxième arbre (207) d'entraînement.
  9. Appareil de commutation suivant l'une des revendications précédentes,
    caractérisé en ce que
    le sectionneur (113) de mise à la terre est monté d'un côté du disjoncteur ou de l'interrupteur (107) et le sectionneur (105) est monté du côté opposé du disjoncteur ou de l'interrupteur (107).
EP09782030.2A 2009-08-20 2009-08-20 Appareil de commutation Not-in-force EP2467863B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2009/060772 WO2011020509A1 (fr) 2009-08-20 2009-08-20 Appareil de commutation

Publications (2)

Publication Number Publication Date
EP2467863A1 EP2467863A1 (fr) 2012-06-27
EP2467863B1 true EP2467863B1 (fr) 2014-06-04

Family

ID=42110034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09782030.2A Not-in-force EP2467863B1 (fr) 2009-08-20 2009-08-20 Appareil de commutation

Country Status (3)

Country Link
EP (1) EP2467863B1 (fr)
CN (1) CN102484012A (fr)
WO (1) WO2011020509A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011085995A1 (de) * 2011-11-09 2013-05-16 Siemens Aktiengesellschaft Antriebsbaugruppe für einen mehrpoligen Leistungsschalter
US8729985B2 (en) 2012-01-23 2014-05-20 Electro-Mechanical Corporation Switchgear visible disconnect mechanical interlock
US9070517B2 (en) 2012-08-13 2015-06-30 Electro-Mechanical Corporation Vacuum interrupter and linear disconnect switch
CN102938344A (zh) * 2012-12-09 2013-02-20 安徽省电力公司蚌埠供电公司 隔离开关防误操作装置
CN103426677B (zh) * 2013-08-06 2016-06-22 国家电网公司 一种三工位传动装置
CN104036991B (zh) * 2013-12-07 2016-08-17 国家电网公司 具有防误操作功能的三工位隔离开关操动装置
CN104485248B (zh) * 2014-12-31 2017-05-10 嘉兴赛铁龙电气有限公司 接地开关
CN107210148B (zh) 2015-01-28 2018-12-25 Abb瑞士股份有限公司 用于隔离开关和接地开关的机械互锁组件
CN104600577B (zh) * 2015-02-10 2017-01-25 胡俊兵 一种高压开关柜智能接地刀闸
CN106683915A (zh) * 2017-02-15 2017-05-17 益和电气集团股份有限公司 一种绝缘主轴及负荷开关
CN108037369A (zh) * 2018-01-17 2018-05-15 佛山市川东磁电股份有限公司 一种tds检测器及其封装工艺
CN108630474A (zh) * 2018-07-02 2018-10-09 河南华盛隆源电气有限公司 断路器与隔离开关的联锁机构

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2773001B1 (fr) * 1997-12-19 2000-01-21 Schneider Electric Sa Cellule a moyenne tension a isolement gazeux, et a tenue dielectrique elevee
DE102004015386B4 (de) * 2003-03-26 2008-10-30 Abb Technology Ag Mechanische Steuerung für einen Dreistellungsschalter
US7902480B2 (en) * 2007-06-13 2011-03-08 Hitachi, Ltd. Vacuum insulated switchgear
JP5070178B2 (ja) * 2008-10-14 2012-11-07 株式会社日立製作所 スイッチギヤ

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Publication number Publication date
CN102484012A (zh) 2012-05-30
EP2467863A1 (fr) 2012-06-27
WO2011020509A1 (fr) 2011-02-24

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