EP0999569A2 - Power switch - Google Patents

Power switch Download PDF

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Publication number
EP0999569A2
EP0999569A2 EP99810920A EP99810920A EP0999569A2 EP 0999569 A2 EP0999569 A2 EP 0999569A2 EP 99810920 A EP99810920 A EP 99810920A EP 99810920 A EP99810920 A EP 99810920A EP 0999569 A2 EP0999569 A2 EP 0999569A2
Authority
EP
European Patent Office
Prior art keywords
contact
circuit breaker
breaker according
switching pin
switching
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.)
Granted
Application number
EP99810920A
Other languages
German (de)
French (fr)
Other versions
EP0999569A3 (en
EP0999569B1 (en
Inventor
Harald Kretz
Markus Vestner
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
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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, ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Schweiz AG
Publication of EP0999569A2 publication Critical patent/EP0999569A2/en
Publication of EP0999569A3 publication Critical patent/EP0999569A3/en
Application granted granted Critical
Publication of EP0999569B1 publication Critical patent/EP0999569B1/en
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
    • H01H33/70—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
    • H01H33/904—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 characterised by the transmission between operating mechanism and piston or movable contact
    • 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
    • H01H2033/028—Details the cooperating contacts being both actuated simultaneously in opposite directions
    • 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

  • she comprises two arranged mirror-symmetrically to the switching axis Gearbox with one each on the counter contact arrangement fixed, parallel to the switching axis 1 rack 4a or 4b and a gear 5a or 5b, which between the crossbeam 6th in the contact tube 2 directed transversely to the switching axis 1 Axis is rotatably mounted and with the rack 4a and 4b and one also parallel to the switching axis 1 on the On the outside of the switching pin 3 attached teeth 7a or 7b intervenes.

Landscapes

  • Breakers (AREA)
  • Contacts (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Slide Switches (AREA)
  • Saccharide Compounds (AREA)

Abstract

The power switch has a switching pin (3) which is displaceable between a switch on position and a switch off position. A fixed contact tube (2) surrounds the pin coaxially and spaced from it, and is connected to a first electrical connection. The contact tube is electrically connected to the switching pin via a sliding contact arrangement. The sliding contact arrangement operates between a sliding contact on the outside of a contact ring (8) fixed to the switching pin, and the inner surface of the contact tube.

Description

Technisches GebietTechnical field

Die Erfindung betrifft einen Leistungsschalter, wie sie in Kraftwerken, Umspannwerken und anderen Einrichtungen der Elektroenergieversorgung zum Ein- und Ausschalten von Betriebs- und Überströmen eingesetzt werden.The invention relates to a circuit breaker, as in Power plants, substations and other facilities of the Electrical energy supply for switching on and off Operating and overcurrents are used.

Stand der TechnikState of the art

Ein gattungsgemässer Leistungsschalter ist aus EP-A-0 313 813 bekannt. Bei derartigen Leistungsschaltern ist der Schaltstift jeweils mit dem entsprechenden elektrischen Anschluss über eine Gleitkontaktanordnung elektrisch leitend verbunden, welche zwischen der Aussenseite des Schaltstiftes und einem denselben unmittelbar umgebenden feststehenden Gleitkontakt wirksam ist.A generic circuit breaker is off EP-A-0 313 813 known. With such circuit breakers is the switch pin with the corresponding one electrical connection via a sliding contact arrangement electrically connected, which between the Outside of the switching pin and the same immediately surrounding fixed sliding contact effective is.

Wegen des geringen Umfangs des Schaltstiftes ist bei dieser Ausbildung der Gleitkontaktanordnung die Kontaktfläche zwangsläufig klein, so dass die Voraussetzungen für eine guten Stromübergang eher ungünstig sind.Because of the small size of the switching pin is in this Formation of the sliding contact arrangement the contact surface inevitably small, so the prerequisites for one good power transfer are rather unfavorable.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt die Aufgabe zu Grunde, einen gattungsgemässen Schalter hinsichtlich des Stromübergangs zwischen dem Schaltstift und dem entsprechenden elektrischen Anschluss zu verbessern. Diese Aufgabe wird durch die Merkmale im Kennzeichen des Anspruchs 1 gelöst.The invention is based on the object Generic switch with regard to the current transfer between the switch pin and the corresponding electrical Improve connection. This task is accomplished by the Features solved in the characterizing part of claim 1.

Durch die Erfindung wird der Kontaktwiderstand der Gleitkontaktanordnung beträchtlich vermindert und der Stromübergang entsprechend verbessert. Darüberhinaus wird auch die Länge der Gleitkontaktanordnung reduziert, so dass die Gesamtlänge des Schaltstiftes verringert werden kann. Dies erleichtert wiederum dessen präzise mechanische Führung, so dass das Lager für den Schaltstift kurz gehalten werden kann. Insgesamt ergibt sich eine geringere Baulänge des Leistungsschalters.The contact resistance of the Sliding contact arrangement considerably reduced and the Current transfer improved accordingly. Furthermore, also reduced the length of the sliding contact arrangement, so that the total length of the switching pin can be reduced. This in turn facilitates its precise mechanical Guide so that the bearing for the switching pin is kept short can be. Overall, the overall length is shorter of the circuit breaker.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Im folgenden wird die Erfindung anhand von Figuren, welche lediglich ein Ausführungsbeispiel darstellen, näher erläutert. Es zeigen

Fig. 1
einen Längsschnitt durch einen Abschnitt eines erfindungsgemässen Leistungsschalters, oben in Einschalt-, unten in Ausschaltstellung und
Fig. 2
eine Draufsicht von rechts auf einen Teil des in Fig. 1 dargestellten Abschnitts des erfindungsgemässen Leistungsschalters.
In the following, the invention is explained in more detail with reference to figures, which only represent an exemplary embodiment. Show it
Fig. 1
a longitudinal section through a section of a circuit breaker according to the invention, above in the on position, below in the open position and
Fig. 2
a plan view from the right of part of the portion of the circuit breaker according to the invention shown in FIG. 1.

Wege zur Ausführung der ErfindungWays of Carrying Out the Invention

Der Gesamtaufbau des erfindungsgemässen Leistungsschalters kann mit einem eine Schaltachse 1 umgebenden Kontaktrohr 2, das mit einem elektrischen Anschluss verbunden ist und in einen feststehenden Nennstromkontakt ausläuft, einer längs der Schaltachse 1 verschieblichen beweglichen Gegenkontaktanordnung (nicht dargestellt) mit einem Nennstromkontakt, einer Abbrandkontakttulpe und einer diese umgebenden Isolierstoffdüse sowie mit einem ebenfalls längs der Schaltachse 1 gegenläufig verschieblichen Schaltstift 3, der vom Kontaktrohr 2 mit Abstand umgeben und mit demselben elektrisch leitend verbunden ist und mit der Abbrandkontakttulpe der Gegenkontaktanordnung zusammenwirkt, genau der Ausführung nach Fig. 2 in EP-A-0 313 813 entsprechen.The overall structure of the circuit breaker according to the invention can with a contact tube 2 surrounding a switching axis 1, which is connected to an electrical connection and in a fixed nominal current contact leaks, one along the shift axis 1 movable movable Mating contact arrangement (not shown) with a Nominal current contact, an erosion contact tulip and one of these surrounding insulating material nozzle as well as with one also lengthways the shifting pin 1, which is displaceable in the opposite direction, surrounded by the contact tube 2 at a distance and with the same is electrically connected and with the The erosion contact tulip of the counter-contact arrangement cooperates, exactly the version according to FIG. 2 in EP-A-0 313 813 correspond.

Ebenfalls wie dort ist die Verbindung zwischen der Gegenkontaktanordnung und dem Schaltstift 3 ausgebildet. Sie umfasst zwei spiegelsymmetrisch zur Schaltachse angeordnete Getriebe mit jeweils einer an der Gegenkontaktanordnung befestigten, zur Schaltachse 1 parallelen Zahnstange 4a bzw. 4b sowie einem Zahnrad 5a bzw. 5b, das zwischen Querbalken 6 im Kontaktrohr 2 um eine quer zur Schaltachse 1 gerichtete Achse drehbar gelagert ist und mit der Zahnstange 4a bzw. 4b und einer ebenfalls parallel zur Schaltachse 1 an der Aussenseite des Schaltstifts 3 angebrachten Verzahnung 7a bzw. 7b eingreift.Just like there is the connection between the Counter contact arrangement and the switching pin 3 is formed. she comprises two arranged mirror-symmetrically to the switching axis Gearbox with one each on the counter contact arrangement fixed, parallel to the switching axis 1 rack 4a or 4b and a gear 5a or 5b, which between the crossbeam 6th in the contact tube 2 directed transversely to the switching axis 1 Axis is rotatably mounted and with the rack 4a and 4b and one also parallel to the switching axis 1 on the On the outside of the switching pin 3 attached teeth 7a or 7b intervenes.

Der Schaltstift 3 ist jedoch mit dem Kontaktrohr 2 über einen ihn mit Abstand umgebenden Kontaktträger verbunden, der als geschlossener Kontaktring 8 (s. auch Fig. 2) ausgebildet ist, welcher über zwei einander diametral gegenüberliegende Speichen 9a,b am Schaltstift 3 befestigt ist und an seiner zylindermantelförmigen Aussenfläche einen Gleitkontakt trägt, der als in einer umlaufenden Nut angeordneter Spiralkontakt 10 ausgebildet ist. Er steht mit der Innenseite des Kontaktrohrs 2 in elektrisch leitendem Kontakt und bildet mit derselben eine Gleitkontaktanordnung, welche bei geringer Längenerstreckung wegen des verhältnismässig grossen Radius des Kontaktringes 8 eine grosse Kontaktfläche aufweist. Im vorliegenden Beispiel liegt das Verhältnis der Radien des Kontaktringes 8 und des Schaltstiftes 3 bei etwa 7:1. Es sind natürlich auch andere Grössenverhältnisse möglich. Bevorzugt wird ein Bereich zwischen 2:1 und 10:1, insbesondere zwischen 4:1 und 8:1.The switching pin 3 is, however, with the contact tube 2 a contact carrier surrounding it at a distance, the as a closed contact ring 8 (see also Fig. 2) is formed, which is diametrically opposed to each other opposite spokes 9a, b attached to the switching pin 3 is and on its cylindrical outer surface Bears sliding contact that as in a circumferential groove arranged spiral contact 10 is formed. He stands with the inside of the contact tube 2 in electrically conductive Contact and forms a sliding contact arrangement with the same, which with a small length extension because of the relatively large radius of the contact ring 8 a has a large contact area. In the present example is the ratio of the radii of the contact ring 8 and Switch pin 3 at about 7: 1. Of course there are others Size ratios possible. An area is preferred between 2: 1 and 10: 1, in particular between 4: 1 and 8: 1.

Die Speichen 9a,b, zwischen denen ein Teil der bei der Ausschaltung entstehenden heissen Gase entweicht, fangen einen gewissen Anteil des Gasdrucks auf, was die Bewegung des Schaltstiftes 3 unterstützt. Die Zahnstangen 4a,b sind durch Oeffnungen lla,b in den Speichen 9a,b gleitend durchgeführt, was ihre Führung verbessert.The spokes 9a, b, between which part of the at Switching off emerging hot gases escapes, catch some proportion of gas pressure on what the movement the switching pin 3 supports. The racks 4a, b are sliding through openings lla, b in the spokes 9a, b carried out, which improves their leadership.

Die vorzugsweise verwendeten Materialien entsprechen weitgehend den im Schalterbau üblichen. Für den Schaltstift 3 kann eine Kupferlegierung verwendet werden, für die Schaltstiftspitze insbesondere Wolframkupfer. Für den Kontaktring 8 und das Kontaktrohr 1 kommen vor allem Kupfer oder Aluminium in Frage. Der Spiralkontakt 10 besteht aus versilbertem Kupferdraht. Die Zahnstangen 4a,b können aus faserverstärktem Kunststoff hergestellt sein.The preferred materials used correspond largely the usual in switch construction. For the switching pin 3, a copper alloy can be used for the Switch pin tip, in particular tungsten copper. For the Contact ring 8 and the contact tube 1 come mainly copper or aluminum in question. The spiral contact 10 consists of silver-plated copper wire. The racks 4a, b can be made fiber-reinforced plastic.

BezugszeichenlisteReference list

11
SchaltachseShift axis
22nd
KontaktrohrContact tube
33rd
SchaltstiftSwitching pin
4a,b4a, b
Zahnstangen Racks
5a,b5a, b
ZahnräderGears
66
QuerbalkenCrossbar
7a,b7a, b
VerzahnungenGears
88th
KontaktringContact ring
9a,b9a, b
SpeichenSpokes
1010th
SpiralkontaktSpiral contact
11a,b11a, b
Oeffnungen in Speichen 9a,bOpenings in spokes 9a, b

Claims (10)

Leistungsschalter mit einem Schaltstift (3), welcher längs einer Schaltachse (1) zwischen einer Einschaltstellung und einer Ausschaltstellung verschiebbar ist und mit einem denselben koaxial mit Abstand umgebenden, mit einem ersten elektrischen Anschluss verbundenen feststehenden Kontaktrohr (2), mit welchem der Schaltstift (3) über eine Gleitkontaktanordnung elektrisch leitend verbunden ist, dadurch gekennzeichnet, dass die Gleitkontaktanordnung zwischen einem Gleitkontakt an der Aussenseite eines mit dem Schaltstift (3) fest verbundenen Kontaktrings (8) und der Innenfläche des Kontaktrohrs (2) wirksam ist.Circuit breaker with a switching pin (3) which can be displaced along a switching axis (1) between an open position and an open position and with a fixed contact tube (2) surrounding it coaxially at a distance and connected to a first electrical connection, with which the switching pin (3 ) is electrically conductively connected via a sliding contact arrangement, characterized in that the sliding contact arrangement is effective between a sliding contact on the outside of a contact ring (8) fixedly connected to the switching pin (3) and the inner surface of the contact tube (2). Leistungsschalter nach Anspruch 1, dadurch gekennzeichnet, dass die sich der Gleitkontakt im wesentlichen über den gesamten Umfang des Kontaktrings (8) erstreckt.Circuit breaker according to claim 1, characterized in that the sliding contact extends substantially over the entire circumference of the contact ring (8). Leistungsschalter nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Gleitkontakt als in einer Nut an der Aussenseite des Kontaktrings (8) angeordneter Spiralkontakt (10) ausgebildet ist.Circuit breaker according to claim 1 or 2, characterized in that the sliding contact is designed as a spiral contact (10) arranged in a groove on the outside of the contact ring (8). Leistungsschalter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Kontaktring (8) mit dem Schaltstift (3) über radiale Speichen (9a, 9b) verbunden ist. Circuit breaker according to one of Claims 1 to 3, characterized in that the contact ring (8) is connected to the switching pin (3) via radial spokes (9a, 9b). Leistungsschalter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Verhältnis der Radien des Kontaktringes (8) und des Schaltstiftes (3) mindestens 2:1, insbesondere zwischen 4:1 und 8:1 beträgt.Circuit breaker according to one of claims 1 to 4, characterized in that the ratio of the radii of the contact ring (8) and the switching pin (3) is at least 2: 1, in particular between 4: 1 and 8: 1. Leistungsschalter nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass er mindestens ein Getriebe aufweist, welches den Schaltstift (3) derart mit einer beweglichen Gegenkontaktanordnung verbindet, dass er zwangsläufig eine zur Bewegung derselben gegenläufige Bewegung ausführt.Circuit breaker according to one of Claims 1 to 5, characterized in that it has at least one gear which connects the switching pin (3) to a movable counter-contact arrangement in such a way that it inevitably executes a movement in the opposite direction to the movement thereof. Leistungsschalter nach Anspruch 6, dadurch gekennzeichnet, dass das mindestens eine Getriebe eine zur Schaltachse parallele, mit der Gegenkontaktanordnung verbundene Zahnstange (4a; 4b) und mindestens ein Zahnrad (5a; 5b) umfasst, welches mit der Zahnstange (4a; 4b) und einer mit dem Schaltstift (3) fest verbundenen zur Schaltachse (1) parallelen Verzahnung (7a; 7b) eingreift.Circuit breaker according to claim 6, characterized in that the at least one gear comprises a rack (4a; 4b) parallel to the switching axis and connected to the counter-contact arrangement and at least one gearwheel (5a; 5b) which is connected to the rack (4a; 4b) and one with the switching pin (3) firmly connected to the switching axis (1) parallel teeth (7a; 7b) engages. Leistungsschalter nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass er zwei bezüglich der Schaltachse (1) spiegelsymmterisch angeordnete Getriebe aufweist.Circuit breaker according to claim 6 or 7, characterized in that it has two gears arranged in mirror symmetry with respect to the switching axis (1). Leistungsschalter nach Anspruch 4 und Anspruch 7 oder 8, dadurch gekennzeichnet, dass die Zahnstange (4a; 4b) des mindestens einen Getriebes jeweils durch eine Oeffnung (11a; 11b) in einer Speiche (9a; 9b) durchgeführt ist. Circuit breaker according to Claim 4 and Claim 7 or 8, characterized in that the toothed rack (4a; 4b) of the at least one transmission is in each case carried out through an opening (11a; 11b) in a spoke (9a; 9b). Leistungsschalter nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, dass das Kontaktrohr (2) einen feststehenden Nennstromkontakt trägt, welcher mit einem Nennstromkontakt der Gegenkontaktanordnung zusammenwirkt.Circuit breaker according to one of claims 6 to 9, characterized in that the contact tube (2) carries a fixed nominal current contact which interacts with a nominal current contact of the counter-contact arrangement.
EP99810920A 1998-11-02 1999-10-11 Power switch Expired - Lifetime EP0999569B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19850396A DE19850396A1 (en) 1998-11-02 1998-11-02 Circuit breaker
DE19850396 1998-11-02

Publications (3)

Publication Number Publication Date
EP0999569A2 true EP0999569A2 (en) 2000-05-10
EP0999569A3 EP0999569A3 (en) 2002-09-18
EP0999569B1 EP0999569B1 (en) 2006-05-03

Family

ID=7886371

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99810920A Expired - Lifetime EP0999569B1 (en) 1998-11-02 1999-10-11 Power switch

Country Status (7)

Country Link
US (1) US6229109B1 (en)
EP (1) EP0999569B1 (en)
JP (1) JP2000149722A (en)
KR (1) KR100615869B1 (en)
CN (1) CN1132210C (en)
AT (1) ATE325423T1 (en)
DE (2) DE19850396A1 (en)

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US6229109B1 (en) * 1998-11-02 2001-05-08 Asea Brown Boveri Ag Power circuit breaker with rack-pinion operating mechanism for movable contact
US7994442B2 (en) 2006-07-12 2011-08-09 Abb Technology Ag Rack gear for electrical circuit breaker

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US20050056117A1 (en) * 2003-07-22 2005-03-17 Kaiser Compositek, Inc. Composite strut and method of making same
KR100725899B1 (en) * 2006-01-12 2007-06-08 강필구 Circuit breaker on/off switch open and close device
EP1930930B1 (en) * 2006-12-06 2013-08-28 ABB Technology AG Transmission for a high-voltage circuit breaker
FR2962252B1 (en) 2010-07-01 2013-08-30 Areva T & D Sas BREAKER CHAMBER FOR A MEDIUM OR HIGH VOLTAGE CIRCUIT BREAKER WITH REDUCED MANEUVER POWER
US8355243B2 (en) 2011-01-27 2013-01-15 Eaton Corporation Closed door circuit breaker racking extension
CN102820176B (en) * 2012-08-14 2015-03-25 河南平高电气股份有限公司 Double acting high voltage sulfur hexafluoride breaker and double acting transmission device thereof
CN102820162B (en) * 2012-08-14 2015-07-01 河南平高电气股份有限公司 Double-acting high-voltage sulfur hexafluoride circuit breaker and double-acting transmission device thereof
CN102820177B (en) * 2012-08-14 2015-04-01 河南平高电气股份有限公司 High voltage sulfur hexafluoride breaker and double acting transmission device thereof
CN106148533B (en) * 2016-07-28 2019-06-11 北京泱深生物信息技术有限公司 Marker for esophageal squamous cell carcinoma diagnosis and treatment
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US3098915A (en) * 1961-11-16 1963-07-23 S & C Electric Co Circuit interrupter
US3214550A (en) * 1962-05-02 1965-10-26 Westinghouse Electric Corp Circuit interrupters with crossbars captively related to piston structures
US4219711A (en) * 1976-10-12 1980-08-26 I-T-E Imperial Corporation Axial blast puffer interrupter with multiple puffer chambers
EP0029482A1 (en) * 1979-11-22 1981-06-03 Sprecher & Schuh AG Gas blast switch
EP0313813A1 (en) * 1987-10-27 1989-05-03 BBC Brown Boveri AG Gas blast switch
DE8804108U1 (en) * 1988-03-23 1988-05-19 Siemens AG, 1000 Berlin und 8000 München Pressure gas switch
US5578806A (en) * 1994-08-01 1996-11-26 Abb Management Ag Compressed gas-blast circuit breaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6229109B1 (en) * 1998-11-02 2001-05-08 Asea Brown Boveri Ag Power circuit breaker with rack-pinion operating mechanism for movable contact
US7994442B2 (en) 2006-07-12 2011-08-09 Abb Technology Ag Rack gear for electrical circuit breaker

Also Published As

Publication number Publication date
EP0999569A3 (en) 2002-09-18
DE19850396A1 (en) 2000-05-04
DE59913382D1 (en) 2006-06-08
US6229109B1 (en) 2001-05-08
CN1132210C (en) 2003-12-24
EP0999569B1 (en) 2006-05-03
JP2000149722A (en) 2000-05-30
KR20000035137A (en) 2000-06-26
KR100615869B1 (en) 2006-08-25
CN1253369A (en) 2000-05-17
ATE325423T1 (en) 2006-06-15

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