EP0800191B1 - Leistungsschalter - Google Patents

Leistungsschalter Download PDF

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Publication number
EP0800191B1
EP0800191B1 EP97810118A EP97810118A EP0800191B1 EP 0800191 B1 EP0800191 B1 EP 0800191B1 EP 97810118 A EP97810118 A EP 97810118A EP 97810118 A EP97810118 A EP 97810118A EP 0800191 B1 EP0800191 B1 EP 0800191B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
contact
housing wall
breaker according
current path
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 - Lifetime
Application number
EP97810118A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0800191A2 (de
EP0800191A3 (de
Inventor
Lukas Dr. Zehnder
Robert Anderes
Bodo Dr. Brühl
Christian Dähler
Kurt Dr. Kaltenegger
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 Schweiz AG
Original Assignee
ABB Schweiz 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
Application filed by ABB Schweiz AG filed Critical ABB Schweiz AG
Priority to EP03015962A priority Critical patent/EP1359597B1/de
Publication of EP0800191A2 publication Critical patent/EP0800191A2/de
Publication of EP0800191A3 publication Critical patent/EP0800191A3/de
Application granted granted Critical
Publication of EP0800191B1 publication Critical patent/EP0800191B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H33/02—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
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • 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
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7038—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by a conducting tubular gas flow enhancing nozzle
    • 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
    • H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • 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 invention is based on a circuit breaker according to the preamble of claim 1.
  • a circuit breaker which has an arcing chamber with two fixed, spaced-apart erosion contacts.
  • the quenching chamber is filled with an insulating gas, preferably SF 6 gas under pressure.
  • an insulating gas preferably SF 6 gas under pressure.
  • the bridging contact concentrically surrounds the cylindrical erosion contacts.
  • the bridging contact and the two erosion contacts form a power current path which is only subjected to current when it is switched off.
  • the bypass contact slides down from a first of the erosion contacts and draws an arc, which initially burns between the first erosion contact and the end of the bypass contact facing it.
  • the pressurized insulating gas required for the blowing is generally generated by means of a blowing piston connected to the movable bridging contact.
  • This circuit breaker also points in parallel to the Power current path on a nominal current path, which at open circuit breaker carries the operating current.
  • the nominal current path is concentric around the power current path arranged.
  • the bridging contact is here with one movable, arranged in the nominal current path Nominal current contact mechanically rigidly connected.
  • the rated current path is interrupted first The current to be interrupted then commutates to the Power current path, where then, as described above Arc is initiated and then extinguished.
  • bypass contact points due to its Dimensions, a comparatively large mass to be moved on that accelerate during gear changes and is to be slowed down.
  • the circuit breaker drive must provide the necessary energy for this.
  • Another circuit breaker is known from the published patent application DE 31 27 962 A1, which has an arcing chamber with two fixed, spaced-apart erosion contacts.
  • the quenching chamber is filled with an insulating gas, preferably SF 6 gas under pressure.
  • an insulating gas preferably SF 6 gas under pressure.
  • the bridging contact concentrically surrounds the cylindrical erosion contacts.
  • the bypass contact is also designed here as a nominal current contact. Opening this circuit breaker is similar to the circuit breaker described above.
  • This bridging contact also shows, due to its dimensions, a comparatively large one to move Mass on that accelerate during gear changes and is to be slowed down.
  • the circuit breaker drive must provide the necessary energy for this.
  • CH 611 452 is a cylindrical built circuit breaker known, the one central arranged bypass contact. in the switched on state leads here however Bridging contact also the nominal current. Because of this The bypass contact has rated current carrying capacity a comparatively large mass that when switching must be moved and braked. When switched off the outflow of hot gases laterally radially from the Arc zone out.
  • This circuit breaker has at least one with one insulating medium filled, cylindrical, extending along a central axis, one Arcing chamber with power circuit, with two fixed, arranged on the central axis, spaced from each other in the axial direction in the Power current path arranged erosion contact arrangements on. Furthermore one of these erosion contact arrangements in switched on, electrically conductive connection, movable bypass contact. Between the fixed Burning contact arrangements is an arcing zone provided. There is a parallel to the power path Rated current path arranged with moving Rated current contacts is provided.
  • the moving ones are Nominal current contacts of the nominal current path in one of the Arc zone arranged completely separated volume, which depends on the area of the circuit breaker in which the Arc-generated hot gases and combustion particles occur is completely separated. These hot gases and The nominal current contacts cannot therefore burn up particles adversely affect, making their stability and so that their lifespan is advantageously increased.
  • the bridging contact is also easier here Switch pin formed of no resilient contact elements has, it is therefore relatively simple and inexpensive to manufacture.
  • the movable one Nominal current contact moves much slower than the one with it via a speed-reducing lever linkage connected bridging contact.
  • the lifespan of the Nominal current contacts because of the smaller mechanical Stress, advantageously increases what the availability of the Circuit breaker significantly improved.
  • Circuit breaker designs according to the invention result in that the erosion contact arrangements and partially also the housing parts from identical parts to mirror image are constructed on a plane of symmetry.
  • FIG. 1 shows a schematically represented section through the contact zone 1 of the quenching chamber of a first Embodiment of a circuit breaker according to the invention when switched on.
  • the arcing chamber is centric arranged symmetrically about a central axis 2.
  • This central axis 2 extends cylindrically trained, metallic switching pin 3, which by means of a Drive, not shown, along the central axis 2 is mobile.
  • the switching pin 3 has a dielectric conveniently shaped tip 4, which if necessary with a electrically conductive, burn-resistant material can be.
  • the Switch pin 3 an electrically conductive distance a between two erosion contact arrangements 5.6.
  • the erosion contact arrangement 5 has a schematic shown contact basket 7, the electrically conductive with a shoulder of a plate-shaped carrier 8 Metal is connected.
  • the contact basket 7 has contact fingers made of metal, which resiliently on the surface of the Put switch pin 3 on.
  • the Burning plate 9 is preferably made of graphite, she can also be made from other electrically conductive, erosion-resistant materials such as Tungsten copper connections exist.
  • the carrier 8 facing away surface of the erosion plate 9 is by means of a ring-shaped cover 36 from a burn-resistant insulating material against Arc exposure protected. In addition, the Cover 36 prevents the arc base from closing migrates far into the storage volume 17.
  • the structure of the erosion contact arrangement 6 corresponds to that of FIG Burn-up contact arrangement 5, however it is arranged in mirror image to this.
  • a dash-dotted one Line 11 indicates the level of reflection, which of the central axis 2 is pierced vertically.
  • the Burn-up contact arrangement 6 has a schematic shown contact basket 12, the electrically conductive with a shoulder of a plate-shaped carrier 13 is connected from metal.
  • the contact basket 12 has Contact fingers made of metal, which resiliently on the Place the surface of the switch pin 3.
  • On the the Erosion contact arrangement 5 facing side of the carrier 13, at the point of the smallest distance between the two Burn-up contact arrangements 5 and 6 is a burn-off plate 14 using one of the known methods with this carrier 13 have been connected so that the ends 15 of the Contact fingers are protected against erosion.
  • the Burning plate 14 is preferably made of graphite, she can also be made from other electrically conductive, erosion-resistant materials such as Tungsten copper connections exist.
  • the carrier 13 facing surface of the erosion plate 14 is by means of a ring-shaped cover 41 from a burn-resistant insulating material against Arc exposure protected.
  • the Cover 41 prevents the arc base from closing migrates far into the storage volume 17.
  • the carrier 8 represents an end face of a cylindrical, completely enclosed by metallic walls Exhaust volume 18 represents.
  • the carrier 13 is an end face of a cylindrical shape, completely of metallic walls enclosed exhaust volume 19. If a nominal current path is provided, the in this nominal current path existing movable Rated current contacts when the Circuit breaker the electrically conductive connection between the metallic walls of the two exhaust volumes 18 and 19.
  • the switching pin 3 is in this case only from comparatively small stray currents traversed.
  • the carrier 13 is provided with a bore 20 which with a schematically illustrated check valve 21 is closed.
  • a line 22 is connected to the bore 20 connected, which is the one with the switching pin 3 in Actively connected piston-cylinder arrangement in a Switch-off process compressed insulating gas to the storage volume 17 leads.
  • An inflow of the pressurized Insulating gas in the storage volume 17 is only then possible if a lower pressure in the storage volume 17 prevails than in line 22.
  • FIG. 2 shows a schematically represented section through the contact zone 1 of a first embodiment of the Arcing chamber of a circuit breaker according to the invention while switching off.
  • the switching pin 3 has in the course its switch-off movement in the direction of arrow 27 between the erosion plates 9 and 14 drawn an arc 23.
  • the Arc 23 impinges on the insulating gas surrounding it thermal and thereby temporarily increases the pressure in it area of the arcing chamber designated as arcing zone 24.
  • the pressurized insulating gas is in the storage volume 17th saved temporarily. Part of the pressurized However, insulating gas flows through an opening 25 on the one hand into the exhaust volume 18 and on the other hand through an opening 26 into the exhaust volume 19.
  • the switching pin 3 is with a piston-cylinder arrangement connected, in which insulating gas during a switch-off process is compressed.
  • This compressed insulating gas is like an arrow 28 indicates through the line 22 in the Storage volume 17 initiated when in storage volume 17th the pressure is lower than in line 22.
  • This is the case, for example, when the arc 23 is so is low in current that it does not include the arc zone 24 can heat up intensely enough.
  • a current Arc 23 heats the arc zone 24 very strongly, so that a large pressure of the insulating gas in the storage volume 17 occurs, opens after exceeding one predetermined limit value a pressure relief valve 29 and Excess pressure is injected into the exhaust volume 18 reduced.
  • the Circuit breakers for example, only for comparative purposes small breaking currents is designed for Dispense with pressure relief valve.
  • FIG. 3 shows a partial section through a with blowing coils 30 and 31st provided contact zone of an inventive Circuit breaker in the open state.
  • the blow coil 30 is in a recess of the Carrier 8 embedded, the one winding end 32 a has bare metallic contact surface, which by means of a screw 33 against the bright metallic surface of the Carrier 8 is pressed.
  • the winding end 32 is thus electrically conductively connected to the carrier 8. Between the remaining surface of the blow coil facing the carrier 8 30 and the carrier 8 is electrical insulation 34 intended.
  • This insulation 34 also distances the Winding coils 30 from each other.
  • the other Winding end 35 of the blow coil 30 is electrically conductive with the burn plate 9 connected.
  • the facing away from the carrier 8 Surface of the blow coil 30 and part of the surface of the Burning plate 9 is made from a cover 36 burn-resistant insulating material against Arc exposure protected.
  • the blow coil 31 is in a recess of the carrier 13 embedded, the one winding end 37 a metallic has bare contact surface, which by means of a screw 38 against the metallic bright surface of the carrier 13 is pressed.
  • the winding end 37 is thus electrical conductively connected to the carrier 13.
  • the surface of the blow coil 31 facing the carrier 13 and electrical support 39 is provided on support 13. This insulation 39 also distances the turns of the Blow coil 31 from each other.
  • the other winding end 40 of the Blow coil 31 is electrically conductive with the erosion plate 14 connected.
  • the surface facing away from the carrier 13 Blow coil 31 and part of the surface of the erosion plate 14 is by means of a cover 41 from a burn-resistant insulating material against Arc exposure protected.
  • the two blow coils 30 and 31 are arranged such that the generated by these blow coils 30 and 31 Mutually reinforce magnetic fields.
  • the two covers 36 and 41 form one in this embodiment annular nozzle channel, the narrowing of the distance a has, and which widens in the radial direction until it merges into the storage volume 17.
  • FIG. 4 shows a greatly simplified section through a circuit breaker according to the invention, shown schematically.
  • the right half of the figure shows the circuit breaker when it is switched on, and the left half of the figure shows the circuit breaker when it is switched off.
  • the circuit breaker is constructed concentrically around the central axis 2, its power contacts are provided with blow coils 30, 31.
  • the exhaust volume 18 filled with insulating gas under pressure, preferably SF 6 gas, is enclosed by the carrier 8, a cylindrical housing wall 42 connected to it and a sealing cover 43 opposite the carrier 8 and screwed to the housing wall 42 in a pressure-tight manner.
  • the closure cover 43 is provided in the center with a cylindrical flow deflection 44 extending in the direction of the opening 25.
  • the housing wall 42 and the closure cover 43 like the carrier 8, are generally made of an electrically highly conductive metal.
  • the housing wall 42 is pressure-tightly connected to a cylindrical insulating tube 45.
  • the insulating tube 45 is connected in a pressure-tight manner to a further cylindrical housing wall 46.
  • the housing wall 46 is configured exactly the same as the housing wall 42, but it is arranged in mirror image to it, the dash-dotted line 11 indicating the plane of reflection.
  • the insulating tube 45 is arranged concentrically with the insulating partition 16. This housing wall 46 is connected to the carrier 13.
  • the exhaust volume 19 filled with insulating gas under pressure, preferably SF 6 gas, is enclosed by the carrier 13, the housing wall 46 connected to it and a cover 47 opposite the carrier 13 and screwed to the housing wall 46 in a pressure-tight manner.
  • the cover 47 is provided with a cylinder 48 in the center.
  • the housing wall 46 and the cover 47 like the carrier 13, are generally made of an electrically highly conductive metal.
  • a distance b is provided between the two housing walls 42 and 46.
  • the housing wall 42 is provided on the outside with attachment options for power connections 49.
  • the housing wall 46 is provided on the outside with attachment options for power connections 50.
  • the insulating tube 45 is arranged in a depression formed by the two housing walls 42 and 46, as a result of which the tensile forces caused by the pressure in the exhaust volumes 18 and 19 and which stress the insulating tube 45 in the axial direction are minimized. As a result of this recessed arrangement, the outer surface of the insulating tube 45 is particularly well protected against damage in transit.
  • a compression piston 51 slides is connected to the switching pin 3.
  • the compression piston 51 compresses when the switching pin 3 is switched off the insulating gas in the cylinder 48.
  • the compressed insulating gas flows through the schematic shown lines 22 and 22a in the storage volume 17th a if the pressure ratios in this volume are this allow. If too high in this cylinder 48 Compression pressure should occur, this can be caused by a Pressure relief valve, not shown, into the exhaust volume 19 be broken down into it.
  • the switching pin 3 is by a not shown Drive moves. At least one on the switching pin 3 Articulated lever 52, the other end rotatable here and is slidably mounted in the housing wall 46. With the Lever 52 is a rocker 53 rotatably connected, which the Force exerted by lever 52 on a hinged rod 54 transfers. The rod 54 moves parallel to the direction the central axis 2, it is here in the housing wall 46 and guided in the carrier 13 with low friction. The other end of the Rod 54 is shown schematically as a triangle shown finger basket 55 connected. The finger basket 55 serves as a holder for a large number of individually resilient Suspended contact finger 56.
  • the contact fingers 56 form in switched on state the moving part of the Circuit breaker rated current path.
  • the contact fingers 56 bridge the distance b electrically in this position conductive. The current through the circuit breaker then flows for example from the power connections 49 through the Housing wall 42, through the contact fingers 56 and Housing wall 46 to the power connections 50.
  • the lever linkage which each consist of a lever 52, one Swing arm 53 and a rod 54 are designed so that the drive generated by the drive, not shown, comparatively high switch-off speed of the Switch pin 3, which in the range of 10 m / sec to 20 m / sec is implemented in about ten times smaller Switch-off speed of the finger basket 55 of approximately 1 m / sec up to 2 m / sec.
  • This slower movement of the Finger basket 55 is the mechanical stress of the same and also that of the contact fingers 56 is advantageously small, so that these components are comparatively light and low-mass can be carried out because they do not have a large mechanical Have to withstand stress.
  • the switching pin 3 is on the one hand with the help of the Cylinder 48 sliding compression piston 51 and on the other hand in a guide part 58.
  • the guide part 58 is with the carrier by means of star-shaped ribs 13 connected.
  • the figures are used to explain the mode of operation considered in more detail.
  • the switching pin 3 When switching off, the switching pin 3 in the course of its switch-off movement between the Abbrandplatten 9 and 14 an arc 23.
  • the switching pin 3 moves with a comparatively very high Switch-off speed, so that the arc 23 only briefly burns on the tip 4 of the switching pin 3 and immediately commutates on the erosion plate 14.
  • the top 4 therefore shows hardly any burn marks.
  • the burn plates 9 and 14 are made of particularly erosion-resistant material, they have therefore a comparatively long service life.
  • the Circuit breakers therefore only have to be used comparatively rarely be revised, making it a comparatively large Availability.
  • the arc 23 is very quick because of the Switch-off movement of the switching pin 3 comparatively quickly reach its full length, so that shortly after the Contact separation the full arc energy available stands for the pressurization of the insulating gas in the Arc zone 24.
  • the arc 23 impacts it surrounding insulating gas thermally and thereby increases briefly the pressure in the arc zone 24 of the quenching chamber.
  • the pressurized insulating gas is in the storage volume 17th saved temporarily. Part of the pressurized However, insulating gas flows through an opening 25 on the one hand into the exhaust volume 18 and on the other hand through an opening 26 into the exhaust volume 19.
  • the switching pin 3 is, however usually connected to a piston-cylinder arrangement, in which insulating gas is compressed during a switch-off process becomes. This compressed insulating gas is in addition to that thermally generated pressurized insulating gas through the Line 22 introduced into the storage volume 17.
  • the circuit breaker according to the invention is for Switchgear in the medium-voltage range is particularly good suitable.
  • the compact cylindrical version of the Circuit breaker is particularly suitable for installation in metal-encapsulated systems, especially for installation in metal-encapsulated generator leads.
  • the Circuit breaker very suitable for the replacement of outdated circuit breakers since it, at the same or better breaking capacity, a much smaller one Space requirements than this are usually at one such retrofitting no complex structural changes necessary. If the circuit breaker for operating voltages should be used above about 24 kV to 30 kV, so The distances a and b must be increased and the required Voltage must be adjusted, if necessary also the Switch-off speed of the switching pin 3 accordingly adjusted, i.e. increase.
  • the switch-on speed of the switching pin 3 is included this circuit breaker in the range 5 m / sec to 10 m / sec, while the contact fingers 56 of the nominal current contact with a corresponding switch-on speed in the range of Drive 0.5 m / sec to 1 m / sec into their switch-on position.

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP97810118A 1996-04-04 1997-03-03 Leistungsschalter Expired - Lifetime EP0800191B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03015962A EP1359597B1 (de) 1996-04-04 1997-03-03 Leistungsschalter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19613568 1996-04-04
DE19613568A DE19613568A1 (de) 1996-04-04 1996-04-04 Leistungsschalter

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP03015962A Division EP1359597B1 (de) 1996-04-04 1997-03-03 Leistungsschalter

Publications (3)

Publication Number Publication Date
EP0800191A2 EP0800191A2 (de) 1997-10-08
EP0800191A3 EP0800191A3 (de) 2000-10-18
EP0800191B1 true EP0800191B1 (de) 2004-05-06

Family

ID=7790517

Family Applications (2)

Application Number Title Priority Date Filing Date
EP97810118A Expired - Lifetime EP0800191B1 (de) 1996-04-04 1997-03-03 Leistungsschalter
EP03015962A Expired - Lifetime EP1359597B1 (de) 1996-04-04 1997-03-03 Leistungsschalter

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03015962A Expired - Lifetime EP1359597B1 (de) 1996-04-04 1997-03-03 Leistungsschalter

Country Status (9)

Country Link
US (1) US5929409A (zh)
EP (2) EP0800191B1 (zh)
JP (1) JP4297993B2 (zh)
KR (1) KR100434927B1 (zh)
CN (1) CN1068136C (zh)
CA (1) CA2199350C (zh)
DE (3) DE19613568A1 (zh)
RU (1) RU2189657C2 (zh)
UA (1) UA42021C2 (zh)

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CN102290278B (zh) * 2011-08-04 2015-04-22 中国西电电气股份有限公司 用于电开关设备的引弧装置
WO2013057808A1 (ja) * 2011-10-19 2013-04-25 三菱電機株式会社 ガス遮断器
WO2013136516A1 (ja) * 2012-03-16 2013-09-19 三菱電機株式会社 ガス遮断器
CN106571262B (zh) * 2016-10-27 2019-03-12 河南平高电气股份有限公司 一种隔离开关及其触头组件
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CN112331517B (zh) * 2020-11-19 2023-06-27 西安西电开关电气有限公司 气体灭弧室

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DE3435967A1 (de) * 1984-08-22 1986-03-06 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
DE3915700C3 (de) * 1989-05-13 1997-06-19 Aeg Energietechnik Gmbh Druckgasschalter mit Verdampfungskühlung
FR2650911B1 (fr) * 1989-08-09 1991-10-04 Alsthom Gec Disjoncteur a moyenne tension
ZA911157B (en) * 1990-02-23 1992-02-26 Acec Transport Sa Hyper-rapid circuit breaker
DE9107207U1 (zh) * 1991-06-07 1991-08-08 Siemens Ag, 8000 Muenchen, De
DE4200896A1 (de) * 1992-01-13 1993-07-15 Siemens Ag Hochspannungsleistungsschalter
EP0599742B1 (fr) * 1992-11-26 1999-01-20 Schneider Electric Sa Mécanisme d'ouverture et de fermeture pour interrupteur électrique moyenne ou haute tension

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Publication number Publication date
KR100434927B1 (ko) 2004-09-08
CN1170948A (zh) 1998-01-21
DE59712446D1 (de) 2005-11-17
RU2189657C2 (ru) 2002-09-20
DE19613568A1 (de) 1997-10-09
CA2199350C (en) 2005-09-13
EP0800191A2 (de) 1997-10-08
EP1359597B1 (de) 2005-10-12
EP0800191A3 (de) 2000-10-18
EP1359597A3 (de) 2004-01-28
CN1068136C (zh) 2001-07-04
UA42021C2 (uk) 2001-10-15
KR970071877A (ko) 1997-11-07
CA2199350A1 (en) 1997-10-04
JP4297993B2 (ja) 2009-07-15
JPH1031945A (ja) 1998-02-03
DE59711587D1 (de) 2004-06-09
EP1359597A2 (de) 2003-11-05
US5929409A (en) 1999-07-27

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