EP1811537B1 - Chambre de coupure pour un disjoncteur électrique - Google Patents

Chambre de coupure pour un disjoncteur électrique Download PDF

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Publication number
EP1811537B1
EP1811537B1 EP06405027A EP06405027A EP1811537B1 EP 1811537 B1 EP1811537 B1 EP 1811537B1 EP 06405027 A EP06405027 A EP 06405027A EP 06405027 A EP06405027 A EP 06405027A EP 1811537 B1 EP1811537 B1 EP 1811537B1
Authority
EP
European Patent Office
Prior art keywords
piston
switching chamber
contact
wall
gas
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.)
Revoked
Application number
EP06405027A
Other languages
German (de)
English (en)
Other versions
EP1811537A1 (fr
Inventor
Martin Kriegel
Markus Vestner
Olaf Hunger
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.)
ABB Technology AG
Original Assignee
ABB Technology 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=36583197&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1811537(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ABB Technology AG filed Critical ABB Technology AG
Priority to EP06405027A priority Critical patent/EP1811537B1/fr
Priority to AT06405027T priority patent/ATE459973T1/de
Priority to DE502006006325T priority patent/DE502006006325D1/de
Priority to PCT/CH2007/000012 priority patent/WO2007082399A1/fr
Publication of EP1811537A1 publication Critical patent/EP1811537A1/fr
Application granted granted Critical
Publication of EP1811537B1 publication Critical patent/EP1811537B1/fr
Revoked 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
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas

Definitions

  • the present invention relates to a switching chamber for a gas-insulated high-voltage switch according to the preamble of claim 1.
  • the invention also relates to a switch with such a switching chamber.
  • a switching chamber of the aforementioned type is generally used in gas-insulated circuit breakers in the voltage range of about 70 kV and for turn-off of more than 10 kA and is with an arc extinguishing properties having insulating gas, such as based on sulfur hexafluoride and / or nitrogen and / or carbon dioxide, in the generally filled up to a few bar pressure. If these circuit breakers cause a large short-circuit current, then a considerable amount of hot arc gas is released explosively by the forming switching arc, which can be used to extinguish the switching arc. If this gas exits the switching chamber, a gas chamber surrounding the switching chamber as well as insulators involved in the construction and in the mounting of the chamber can be subjected to excessive dielectric stress.
  • insulating gas such as based on sulfur hexafluoride and / or nitrogen and / or carbon dioxide
  • the hot arc gases are previously cooled in dielectrically uncritical spaces of the switching chamber.
  • the accumulating amount of arc gas to extinguish the switching arc is generally not sufficient. Therefore, a Blashne is provided for generating extinguishing gas, which is generally designed as a piston-cylinder compression device.
  • a switching chamber of the type mentioned is described in US 4,467,158 A and has an insulating gas-filled metal container 21, in which a Interrupter unit with a contact arrangement and a piston-cylinder compression device 22 is arranged.
  • the cylinder 28 of the compression device is designed to be movable and contains a coaxial arrangement of a drive 30 axially displaceable, hollow cylindrical contact carrier 29 to which an arcing contact assembly 41 of the contact assembly is mounted.
  • a switching operation of the contact carrier 29 slides with its lateral surface on the acting as a guide element of a sliding guide of the carrier 29 inner wall of an annular piston 27 of the compression device.
  • hot arc gas expands through the contact carrier 29 in a discharge space.
  • the piston 27 and acting as a wall of the outflow space support member 24 of the piston are designed as a mounting unit.
  • This mounting unit is attached to a supported on a hollow insulator 25 hollow power connector 26.
  • At the power connector 26 and the support member 24 coaxially surrounding wall is mounted, which limits an arranged between the support member 24 and wall the exhaust chamber of the switching chamber radially outward.
  • a switching chamber with a discharge chamber is also in EP 1 403 891 A1 described.
  • the outflow chamber surrounds an open tube section of a tubular arc contact of the switching chamber, through which hot arc gas formed by the switching arc when a large short-circuit current is switched off can explode.
  • the exhaust gas arc is calmed. This improves the dielectric properties of the gas.
  • the dielectric properties of the gas flowing out of the outflow space are further improved.
  • the gas can then be safely guided into a gas space which is highly dielectrically loaded and which surrounds the switching chamber.
  • this switching chamber contains a piston-cylinder compression device. In this compression device, compressed quenching gas is formed, with which a low-energy switching arc formed when a small current is turned off is successfully blown.
  • An in US 4,229,627 A. described switch has two relatively displaceable switching pieces, which are arranged in a filled with insulating gas, in particular SF 6 , housing.
  • the housing is formed by an insulating tube and two gas-tight attached to the end faces of the insulating end plates.
  • the switching piece is held stationary, whereas a designed as a pipe contact carrier of the switching piece is guided in a gas-tight manner through the end plate into the housing.
  • a mounting unit fixed to the end plate which has a carrier designed as a hollow cylinder and a piston of a compression device held stationary on the carrier for producing compressed extinguishing gas.
  • the carrier encloses a coaxially guided around the hollow contact carrier space which communicates via openings in the contact carrier with the interior of the contact carrier and via openings in the carrier with the insulating gas-filled switching chamber housing.
  • the contact carrier is passed through the piston and carries at a guided by the piston, free end a hollow arcing contact, which carries a foot point of a switching arc when opening the switch.
  • Hot arc gas formed by the arc when opening flows via the hollow arcing contact, the contact carrier and the openings provided in the contact carrier first into the space enclosed by the contact carrier and from there via the openings provided in the carrier directly into the interior of the housing.
  • the arc gas passing from the space enclosed by the contact carrier is in this case led directly to the insulating tube of the switching chamber housing which is heavily loaded with dielectric.
  • US 4 182 942 A shows a gas-insulated high voltage switch, in which an interrupter unit is arranged with a contact arrangement and a piston-cylinder compression device in an insulating gas-filled metal container.
  • an interrupter unit is arranged with a contact arrangement and a piston-cylinder compression device in an insulating gas-filled metal container.
  • hot exhaust gas leaving a hollow arcing contact is cooled in an outflow space and subsequently ejected into the metal container via openings in a wall bounding the outflow space.
  • An in EP 0 039 096 A described Blaskolbenschalter has a compression device with a compression space which is delimited by a movable blow cylinder and a ring-shaped blow piston. Through the blow piston through a tubular formed arcing contact of the switch is guided. The blow piston is fixedly held at a free end of a support tube, the piston holding end of which is tapered. The piston therefore has a circular disk-shaped annular body with two exposed end faces. In this annular body, a check valve is arranged, which connects the compression space with the compression space of a further compression device. A seal prevents hot exhaust gas passing from the arcing contact from reaching the check valve.
  • EP 0 398 213 A shows a Blaskolbenschalter with a arranged in a insulating gas-filled volume switching unit.
  • hot exhaust gas is conducted from a tubular arcing contact of the switching unit into a discharge space surrounding this contact in the region of outlet openings, from which it flows directly into the volume.
  • a known Blaskolbenschalter has a displaceable by a drive along an axis arcing contact, which is guided in two offset along the axis arranged slide bearings.
  • the object is to provide a switching chamber of the type mentioned, which is characterized by a simple structure and can be manufactured inexpensively.
  • an assembly unit comprises two mold parts detachably interconnected by mating, of which the first forms the wall of a discharge space and the piston of a compression device and the second a second of two Guides wearing a sliding guide.
  • the assembly unit is prefabricated in production technology advantageously by plugging together two mold parts and is fixed in the assembly of the switching chamber in a single assembly step to a flange of a housing of the switching chamber.
  • the mounting unit has two molded parts joined together by plugging, certain functional parts, such as the piston, can be molded into the mounting unit in a cost-efficient casting process and without machining.
  • the second guide element is formed from an electrically conductive bearing metal and serves to transmit power from the mounting unit to the tubular arcing contact. It is thus additionally ensured the function of power transmission from the mounting unit to the arcing contact.
  • the mounting unit carries a seal which shields the second guide element from the discharge space, then the second guide element of the sliding guide is protected from hot exhaust gas.
  • a secure mounting of the mounting unit in the switching chamber is ensured when the first molded part is placed on a molded-on switching chamber housing the switching chamber or rigidly connected to this flange and connected non-positively with the flange.
  • a particularly good adhesion is achieved when the second mold part is clamped by means of a screw connection between the flange and the first mold part.
  • the piston is held on a tapered portion of the wall and carries a control valve which is disposed in an area adjacent to the exhaust space outer portion of the piston.
  • the closing of the switching chamber, the circulation of the provided in the switching chamber insulating gas favoring control valve is then deprived of the direct effect of the exhaust gas.
  • the single figure shows a plan view of a guided along an axis section through a portion of a switching chamber according to the invention, in which the above half of the axis of an axially symmetric contact arrangement of the switching chamber is closed and the half located below the axis opened during a turn-off becomes.
  • the switching chamber shown in the single figure is part of a high voltage circuit breaker and can be used for example in a high voltage network with a rated voltage of 250 kV.
  • This chamber contains a filled with a compressed insulating gas, such as based on sulfur hexafluoride or a sulfur hexafluoride gas mixture, filled and largely tubular housing 1 and a received from the switching chamber housing 1 and largely axially symmetrical contact arrangement 2.
  • the contact assembly 2 has two arcing contacts 3, 4 of which the arcing contact 3 is arranged to be movable along the axis of symmetry 5 and the arcing contact 4 is held stationary in the housing 1.
  • the contact 4 does not have to necessarily fixed, it may also be designed to be movable.
  • the two arcing contacts are coaxially covered by an insulating nozzle 6.
  • the reference numerals 7 and 8 designate two tubular rated current contacts, one of which, namely 7, is rigidly and electrically conductively connected to the arcing contact 3 by means of a cylinder bottom 9.
  • the other rated current contact, namely 8, is electrically conductively connected to the arcing contact 4 via an unillustrated connecting element.
  • the rated current contact 7 forms the outer jacket of an insulating gas-filled, hollow cylinder-shaped volume, the inner wall of the arc contact 3, the right end wall of the insulating 6 and the left end wall of a fixed, annular piston 10 of a compression device 11 is formed.
  • the volume is divided by the cylinder bottom 9 in a constant volume containing heating volume 12 and a variable volume containing compression volume 13.
  • the heating volume 12 communicates with a switching arc receiving arc zone 14 (lower half of the figure).
  • the compression volume 13 communicates via a non-illustrated in the cylinder bottom 9, not shown check valve with the heating volume 12 as soon as the pressure in the compression volume 13 is higher than in the heating volume 12.
  • the piston 10 is held on an outer wall 15 of a toroidal outflow chamber 16.
  • the holding force is obviously achieved in that the piston 10 and the wall 15 are integrated into a production-technically advantageous molding 17.
  • the holding force can also be achieved by a connecting element, such as a screw or press connection.
  • the piston 10 carries in coaxial arrangement on its inside at least one annular guide member 18 and on its lateral surface at least one annular seal 19.
  • the outflow chamber 16 has constant volume and is through the wall 15 to the outside and through the arcing contact 3 and a molding 20 of electrically conductive material bounded inside.
  • the outflow space 16 is largely limited by the mold parts 17, 20 and to the right by a tapered portion 21 of the wall 15 and a guide member 18 holding portion of the piston 10.
  • the outflow chamber 16 surrounds the tubular arcing contact 3 in a contact tube section, in the at least one gas passage 22 is formed in the pipe wall.
  • at least one opening 23 is formed, through which the outflow chamber 16 communicates with an exhaust space 24.
  • the exhaust space is limited by the switching chamber housing 1 to the outside and includes the outflow chamber 16 completely. To the outside, it communicates via openings 34 with a volume of gas filled with insulating gas, which is heavily loaded with dielectric during operation of a switch containing the switching chamber and contains dielectrically highly stressed insulators.
  • To the right of the exhaust space 24 is limited by one of the leadership of the rated current contact 7 annular approach to the switching chamber housing 1 and to the left by a molded on Heidelberggephase 1 or rigidly attached to this with not shown connecting means flange 25.
  • the flange is on a the switching chamber housing 1 supporting Insulator 26 supported and carries on the side facing away from the support insulator 26 side of a mounting unit 27, which is fixed by means of a screw 28 on the flange 25.
  • the mounting unit 27 includes the two mold parts 17 and 20 in a coaxial arrangement, wherein the molded part 20 is arranged inside and the molded part 17 outside.
  • the molded part 20 carries an annular guide element 29, which is optionally formed from a highly electrically conductive bearing metal.
  • the guide element 29 forms with the arcing contact 3 a sliding guide. If the guide element 29 is designed to conduct current, then it can also ensure the current transition from the molded part 20 or the mounting unit 27 to the arcing contact 3.
  • the molded part 20 also carries a seal 30, which prevents hot exhaust gas located in the outflow chamber 16 from being able to act directly on the guide element 29 through a narrow annular gap which is always present between the arcing contact 3 and the molded part 20.
  • the molded part 20 includes an outer flange 31 and the molded part 17 has an inner flange 32 which is offset in the axial direction to the right with respect to its end face facing the flange 25.
  • the molded part 17 also has at its left end side female thread, which are intended to receive unspecified screws of the screw 28.
  • the path of a large short-circuit current conducted in the switching chamber generally extends from a first power connection, not shown, via an electrically conductive section of the switch housing 1, a sliding contact 1 'held inside this section. which at the same time as a guide element of a sliding guide for the cylinder of the compression device 11, respectively.
  • the rated current contact 7 acts, and the rated current contact 8 to a likewise not apparent second power connection.
  • the current commutates from the rated current contacts in a current path containing the two arcing contacts 3, 4, which now runs from the rated current contact 7, the cylinder bottom 9, the arcing contact 3 and the arcing contact 4 to the second power connection.
  • a switching arc is formed, which generates hot arc gas of high pressure in the arc zone 14 (lower half of the figure).
  • Part of the hot arc gas escapes as exhaust gas into the hollow arcing contact 3 and flows through the gas passage 22 into the outflow space 16 where pressure, temperature, flow velocity and / or flow direction of the exhaust gas are changed by appropriately guiding and holding the gas flow. Gas exiting via the opening 23 into the exhaust space 24 then already has improved dielectric properties.
  • the escaping gas further regenerates and then after leaving the exhaust space 24 via the openings 34 in the surrounding gas space to a quality sufficient to the dielectrically heavily loaded gas space and provided in the gas space and the action of the gas and the action strong electrical fields exposed parts, such as the support insulator 26 or an integrated into the switching chamber housing quenching chamber insulator to avoid electrical flashovers.
  • the extinguishing gas formed in the heating volume 12 may not be sufficient for successful blowing of the switching arc.
  • extinguishing gas from the compression volume 13 is used, which was generated by compression in the compression device 11 when turned off.
  • valve 33 Another function is performed by the mounting unit by the support of a control valve 33 which is arranged on the piston 10 and controls the supply of insulating gas into the compression volume 13 when the contact arrangement 2 is closed. Because the wall 15 has a tapered section 21, the valve 33 can be arranged in an outer section of the piston 10 adjacent to the exhaust space 24 and not to the discharge space 16 become. The valve 33 is then no longer exposed to the direct action of flowing from the arcing contact 3, hot exhaust gas.
  • the two mold parts 17 and 20 are plugged together and fixed as a mounting unit 27 on the housing flange 25 by means of the screw 28.
  • the thickness of the outer flange 31 is slightly larger than the distance of the inner flange 32 generated by the displacement of the end face of the molding 20. Therefore, the outer flange 31 is clamped in the manufacture of the screw 28 between the flange 25 and inner flange 32 and so is a rigid attachment of the mounting unit 27 reaches the switching chamber housing 1.
  • a likewise designed as a mounting unit part of the contact assembly 2, which comprises the arcing contact 3, the cylinder base 9, acting as a cylinder wall rated current contact 7 and the insulating 6, inserted from the right into the switching chamber housing 1 and in the from the Figur apparent position can be brought.
  • the switching chamber can be completed.
  • the production of the switching chamber can be simplified.
  • the assembly unit 27 can be prefabricated in production engineering advantageous manner and subsequently arranged in the assembly of the switching chamber in a single assembly step on the flange 25 and fixed after installation and adjustment of a movable parts of the contact arrangement, such as arcing contact 3 and rated current contact 7, comprehensive assembly unit on the flange 25 ,
  • the assembly unit 27 has two plug-in mold parts 17 and 20, certain functional parts, such as the piston 10, can be molded into the assembly unit 27 in a cost-efficient casting process. In principle, this is also possible if the mounting unit 27 only contains a shaped body. But then it may be necessary to rework this shaped body by machining.

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (6)

  1. Chambre de commutation pour un commutateur haute tension à isolement gazeux comprenant un boîtier (1) rempli de gaz isolant, un arrangement de contacts (2) maintenu dans le boîtier (1) et muni de deux contacts d'arc (3, 4) qui peuvent coulisser l'un par rapport à l'autre le long d'un axe (5) et dont l'un (3) est de forme tubulaire, un passage de gaz (22) pratiqué dans la paroi du contact d'arc tubulaire (3), un espace d'évacuation (16) qui passe à travers le contact d'arc tubulaire (3) et muni d'une paroi (15) maintenue en position fixe, un espace d'échappement (24) qui englobe l'espace d'évacuation (16) et qui communique avec l'espace d'évacuation (16) par le biais d'une ouverture (23) prévue dans la paroi (15) de l'espace d'évacuation (16), un guide de glissement pour le contact d'arc tubulaire (3) et un dispositif de compression (11) muni d'un piston (10) fixe de forme annulaire à travers lequel passe le contact d'arc tubulaire (3), le piston (10) étant maintenu à la paroi (15) de l'espace d'évacuation (16) et comportant un premier élément de guidage (18) du guide de glissement sur le côté intérieur qui fait face au contact d'arc tubulaire (3) et la paroi (15) ainsi que le piston (10) faisant partie d'une unité de montage (27) fixée au boîtier de la chambre de commutation (1), caractérisée en ce que l'unité de montage (27) présente deux pièces façonnées (17, 20) reliées entre elles de manière amovible par emboîtement dont la première (17) forme la paroi (15) de l'espace d'évacuation (16) et le piston (10) du dispositif de compression (11) et la deuxième (20) comporte un deuxième élément de guidage (29) du guide de glissement.
  2. Chambre de commutation selon la revendication 1, caractérisée en ce que le deuxième élément de guidage (29) est formée par un métal antifriction bon conducteur électrique et sert à la transmission du courant de l'unité de montage (27) au contact d'arc tubulaire (3).
  3. Chambre de commutation selon l'une des revendications 1 ou 2, caractérisée en ce que l'unité de montage (27) comporte une garniture d'étanchéité (30) qui isole le deuxième élément de guidage (29) par rapport à l'espace d'évacuation (16).
  4. Chambre de commutation selon l'une des revendications 1 à 3, caractérisée en ce qu'au moins une première (17) des deux pièces façonnées (17, 20) repose sur une bride (25) formée sur le boîtier (1) de la chambre de commutation ou reliée à demeure avec celle-ci et elle est reliée par adhérence avec la bride.
  5. Chambre de commutation selon la revendication 4, caractérisée en ce que la deuxième pièce façonnée (20) est serrée à l'aide d'un assemblage vissé (28) entre la bride (25) et la première pièce façonnée (17).
  6. Chambre de commutation selon l'une des revendications 1 à 5, caractérisée en ce que le piston (10) est maintenu à une section (21) de la paroi (15) qui se rétrécit et comporte une vanne de commande (33) qui est disposée dans une section extérieure du piston (10) juxtaposée à l'espace d'échappement (24).
EP06405027A 2006-01-23 2006-01-23 Chambre de coupure pour un disjoncteur électrique Revoked EP1811537B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP06405027A EP1811537B1 (fr) 2006-01-23 2006-01-23 Chambre de coupure pour un disjoncteur électrique
AT06405027T ATE459973T1 (de) 2006-01-23 2006-01-23 Schaltkammer für einen gasisolierten hochspannungsschalter
DE502006006325T DE502006006325D1 (de) 2006-01-23 2006-01-23 Schaltkammer für einen gasisolierten Hochspannungsschalter
PCT/CH2007/000012 WO2007082399A1 (fr) 2006-01-23 2007-01-12 Chambre de coupure pour un disjoncteur à haute tension à isolation gazeuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06405027A EP1811537B1 (fr) 2006-01-23 2006-01-23 Chambre de coupure pour un disjoncteur électrique

Publications (2)

Publication Number Publication Date
EP1811537A1 EP1811537A1 (fr) 2007-07-25
EP1811537B1 true EP1811537B1 (fr) 2010-03-03

Family

ID=36583197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06405027A Revoked EP1811537B1 (fr) 2006-01-23 2006-01-23 Chambre de coupure pour un disjoncteur électrique

Country Status (4)

Country Link
EP (1) EP1811537B1 (fr)
AT (1) ATE459973T1 (fr)
DE (1) DE502006006325D1 (fr)
WO (1) WO2007082399A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2180492B1 (fr) 2008-10-22 2013-12-04 ABB Technology AG Chambre de commutation pour un disjoncteur haute tension et disjoncteur haute tension
FR2947377B1 (fr) * 2009-06-29 2011-07-22 Areva T & D Sa Valve a clapet de decharge destinee a decharger un gaz dielectrique entre deux volumes d'une chambre de coupure de disjoncteur haute ou moyenne tension
DE102012208140A1 (de) * 2012-05-15 2013-11-21 Siemens Aktiengesellschaft Elektrische Kontaktanordnung
CN112600075A (zh) * 2020-10-12 2021-04-02 广西序能电气设备有限公司 一种竖直放置的活塞式灭弧装置
CN114420482B (zh) * 2022-01-06 2023-12-08 平高集团有限公司 一种隔离动触头组件及具有隔离断口的高压开关设备

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4048456A (en) 1976-04-01 1977-09-13 General Electric Company Puffer-type gas-blast circuit breaker
JPS52133575A (en) 1976-05-04 1977-11-09 Hitachi Ltd Buffer gas breaker
US4229627A (en) 1978-10-04 1980-10-21 Electric Power Research Institute, Inc. Gas puffer type current interrupter and method
DE2943386A1 (de) 1978-10-26 1980-04-30 Tokyo Shibaura Electric Co Puffer-gasschutz- bzw. -leistungsschalter
DE3015946A1 (de) 1980-04-25 1981-10-29 Brown, Boveri & Cie Ag, 6800 Mannheim Blaskolbenschalter
FR2647254B1 (fr) 1989-05-19 1991-07-05 Alsthom Gec Disjoncteur a moyenne tension a courant nominal eleve
DE50211839D1 (de) 2002-09-24 2008-04-17 Abb Schweiz Ag Leistungsschalter

Also Published As

Publication number Publication date
ATE459973T1 (de) 2010-03-15
DE502006006325D1 (de) 2010-04-15
WO2007082399A1 (fr) 2007-07-26
EP1811537A1 (fr) 2007-07-25

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