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EP2030211A1 - Dispositif de commutation de puissance ou disjoncteur de protection - Google Patents

Dispositif de commutation de puissance ou disjoncteur de protection

Info

Publication number
EP2030211A1
EP2030211A1 EP07704579A EP07704579A EP2030211A1 EP 2030211 A1 EP2030211 A1 EP 2030211A1 EP 07704579 A EP07704579 A EP 07704579A EP 07704579 A EP07704579 A EP 07704579A EP 2030211 A1 EP2030211 A1 EP 2030211A1
Authority
EP
European Patent Office
Prior art keywords
arc
circuit breaker
rail
quenching chamber
fixed contact
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.)
Withdrawn
Application number
EP07704579A
Other languages
German (de)
English (en)
Inventor
Thomas Ritzer
Paul Herma
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
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP2030211A1 publication Critical patent/EP2030211A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • 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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/36—Metal 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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • 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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/346—Details concerning the arc formation chamber

Definitions

  • the circuit breaker or circuit breaker comprises a fixed contact and a aufschwenk- for closing a circuit on the fixed contact movable contact. Furthermore, means are provided which swing away the moving contact in case of a short-circuit current in the ge ⁇ closed circuit from the fixed contact again (to open the circuit, so that the short-circuit current is suppressed).
  • means include a solenoid having a percussion anchor.
  • the arc then runs with one end of the fixed contact to the quenching chamber and at the other end on the running rail also to the quenching chamber.
  • the quenching chamber consists of a sequence of sheets. The arc is divided in the quenching chamber into a plurality of small partial arcs and finally breaks down.
  • the arc whose formation is accompanied by the drop of a high voltage, acts current limiting. Since the strongest possible limitation of the current is desired, in Lei ⁇ often tung switches so-called double-interruption used.
  • two fixed contacts are provided and a moving contact, which creates an electrical connection from one fixed contact to the other fixed contact, for example by being fork-shaped.
  • the Bewegmass of the two fixed contacts When moving away the Bewegmass of the two fixed contacts then form two arcs, namely from the one fixed contact to the moving contact and further in electrical series from Bewegkon ⁇ tact to the second fixed contact.
  • the presence of two arcs which form independently of one another when the moving contact is swung away, results in a particularly effective limitation of the current.
  • Double interruptions are used in particular when the line ⁇ breaker should have a high rated current range and high switching capacity.
  • Double breakers have the disadvantage that due to the need to provide two fixed contacts with associated current paths, wherein the fixed contacts is usually associated with a respective quenching chamber, in the corresponding circuit breaker relatively limited space is available. Double breakers cause especially space problems where the width of the circuit breaker ⁇ is limited.
  • an arc separator ⁇ rail is provided, which in the formation of the arc splitting of the forming or the arc just formed in two arcs be ⁇ acts (which work naturally electrically in series).
  • the invention utilizes the realization that the Auftren ⁇ voltage of the arc in a variety of partial arcs can not be meaningful only in the quenching chamber, but also before an arc from the area of its origin off is headed. Thus, the time between the formation of the arc and its arrival in the quenching chamber is not lost as in the prior art, but a current limitation is carried out by the division into two arcs already directly at or immediately after the formation of the arc.
  • the arc separator rail can act optimally in the region of the formation of the arc, in particular, if it comprises this region.
  • the arc separator ⁇ rail is preferably formed fork-shaped at one end, wherein the fork is arranged so that the moving contact is pivoted when pivoting away from the fixed contact through the fork. A skip of the currently forming Lichtbo- gene during pivoting of the moving contact is facilitated by this measure.
  • the arc ⁇ separating rail can be guided to below the pivoting range of the moving contact.
  • extinguishing chambers are provided.
  • the arc separation leads ⁇ rail each of the two arcs into a quenching chamber.
  • the arc separation rail separates a quenching chamber into two parts. Then, a first arc is led to a first part and a second arc to a second part of the quenching chamber. The arc separator rail then takes over the role of a separating plate in the quenching chamber.
  • the arc separator can lead the two arcs to two different extinguishing chambers.
  • the arc separator rail is not plate-shaped, but is bent and extends on the one hand from the first quenching chamber to the region of formation of the arc and on the other hand from this area to the second quenching chamber.
  • the arc separating rail is as follows: On two opposite sides, it has to metal surfaces that are electrically connected to each other only at a portion, and only at a located to the area of the origin of the arc towards enjoyingre ⁇ -bridging end portion of the arc separating rail.
  • the two metal surfaces beyond the end portion are separated by an insulator layer.
  • This embodiment can be used, in particular, in connection with a basic construction of the circuit breaker or circuit breaker which deviates only slightly or not at all from the state of the art.
  • the fixed contact can be connected via a conductive connection with a quenching chamber and a runners also be connected to a quenching chamber.
  • the arc separator instead of being formed in the prior art between the conductive connection of the fixed contact with the extinguishing chamber and the running rail a single arc, the arc separator, as their name suggests separates this route in two Operawegumblen.
  • the first metal surface of the arc separator rail points to the lei ⁇ border connection between the fixed contact and the quenching chamber, and the second metal surface of the arc separator rail faces the running rail.
  • a first arc may form between the conductive connection and the first metal surface and in series therewith a second arc between the second metal surface and the track rail. Because the two metal surfaces are conductively connected to one another only in the region of the formation of the arc, ie at the end section of the arc separator rail, the electric current flows via the first metal surface to the end section and from the end section to the second metal surface.
  • FIG. 1 shows a schematic cross-sectional view through a circuit breaker from the side according to a first embodiment of the invention
  • FIG 2 shows a detail of the circuit protection scarf ⁇ ter of FIG 1 in plan view perpendicular to the illustration of FIG 1 illustrates
  • FIG. 3 - FIG. 6 illustrate a detail of the side view of FIG. 1 in various stages in order to illustrate the formation of the two arcs, FIG.
  • FIG 7 shows a variant of the first embodiment represents ⁇ represents
  • FIG 8 schematically illustrates a cross sectional view of a
  • Circuit breaker from the side according to a second embodiment of the invention.
  • FIG 1 shows schematically in a cross-sectional view from the side of the essential components of a circuit breaker 10.
  • the circuit breaker 10 has an input terminal 12 and an output terminal 14.
  • the current flows from the terminal 12 via a magnetic coil 16, in the an impact armature 18 is formed, to a fixed contact 20. Swung onto the fixed contact 20 is shown a moving contact 22.
  • the moving contact 22 is connected via a strand 24 and a bimetallic element 26 to the terminal 14.
  • the bimetallic element 26 bends in case of permanent overcurrents and interrupts the connection between the terminals 12 and 14. Even with a short- circuit current, the connection is interrupted, and be ⁇ acts then the solenoid 16, a movement of the impact armature 18 against the moving contact 22, which is then pivoted away from the fixed contact 20.
  • FIG 2 illustrates a plan view of this pivoting range.
  • the circuit breaker 10 of FIG. 1 is shown in FIG. 1 as seen from the right in FIG. Shown in FIG. 2, the fixed contact 20 is shaded with a pivotable moving contact 22 located in front of it, wherein the actual contact surface, which forms the electrical contact, is designated 36.
  • the arc separator rail 34 ends, as seen in FIG 2, fork-shaped. In the present case, a U-shape is shown, but it is also possible in principle any other shape such as a V-shape.
  • the fork shape allows the moving contact 22 to pivot through the arc separator rail 34. In other words, the fork shape makes it possible to partially surround the moving contact 22 without impairing its pivotability.
  • Figures 3 to 6 now illustrate how the arc formation looks in the invention. In each case, a detail from the side view according to FIG. 1 is shown.
  • FIG. 3 the moving contact 22 still touches the fixed contact 20.
  • a short-circuit current should now flow, which is illustrated schematically in FIG. Due to the short circuit ⁇ stream moves the magnetic coil 16 to impact armature 18 against the moving contact 22 and the movable contact 22 pivots completely from the fixed contact 20 away, as shown in FIGS 4 to 6 ge ⁇ , where it finally the end position according to FIG 6 reached.
  • an arc L is produced.
  • the moving contact 22 pivots through the fork-shaped end of the arc separator rail 34 (see FIG. 2).
  • the arc separator rail 34 is formed as a plate whose two surfaces 38 and 40 are metallic.
  • the two metal surfaces 38 and 40 are conductively connected to one another in one end section of the arc separator rail 34, that is to say in the region of the fork in FIG.
  • the conductive connection is designated by the reference numeral 42 in FIG.
  • the arc Ll (FIG. 5) thus forms between the fixed contact 20 and the first metal surface 38. The current then flows over the metal surface 38, and via the conductive connection 42, and from the metallic surface 40, a second arises
  • FIG. 1 A variant of the first embodiment shown in FIG. 1 is shown in FIG.
  • the arc separating rail 134 immediately before the quenching chamber 130 which can thus be constructed as a conventional quenching chamber. Because the arc separator rail 134 until immediately before the quenching chamber 130 overall results is to jump over the arcs Ll and L2 chamber to the extinguishing ⁇ 130th Thus, the arcs in ⁇ We do not behave sentlichen unlike the embodiment shown in FIG. 1
  • FIG. 8 An alternative to the first, shown in Figure 1 exporting ⁇ approximately of the invention is illustrated in FIG. 8 While in the embodiment of FIG 1, the arc separator rail 34 is plate-shaped and the quenching chamber 30 divides into two parts, the embodiment of FIG 8 goes beyond. Instead of dividing the quenching chamber into two parts, two quenching chambers are arranged at different locations in the circuit breaker 10 '. A first quenching chamber 30 'is in this case closed by a metal part 38' of the arc ⁇ separating rail 34 '. A second quenching chamber 30 "is closed by a metal part 40 '. The arc separator rail 34 'is in a sense bent up compared to the arc separator rail 34 of FIG.
  • the arrangement according to FIG 8 so to speak, by "folding" the arrangement of FIG 1 out of this, at least as far as the schematic representation.
  • the other components are basically unchanged, although possibly placed in a different location as shown the arc separator rail 34 'in the pivoting range of the moving contact 22 may be fork-shaped, so that it is not hindered in its pivoting movement. If this pivoting movement takes place in conjunction with a short-circuit current, then a first arc is formed between the fixed contact 20 and the surface 38 '. This first arc is led to the quenching chamber 30 '. A second arc is formed between the track 28 'and the metal surface 40' of the arc separator rail 34 'and is guided to the quenching chamber 30''.
  • the higher switching capacity is achieved by the fact that - as in the double breaker - already exist before the arc enters the arc chamber 2 arcs and thus the double arc voltage already ensures before entering the arc chamber for a better current limit.
  • Another advantage is the smaller footprint of a single breaker (with Lichtbogentrennschiene) over the double breaker.
  • the extinguishing chambers 30, 130, 30 'and 30'' can each utilize the entire device width. There is also sufficient space available for the current paths (see, for example, FIGS. 12 and 14) in the circuit breaker 10 or 10 '.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

Un arc électrique (L) se forme dans des disjoncteurs de protection (10) ou dans des dispositifs de commutation de puissance (10') en cas de court-circuit lors de l'ouverture des contacts. L'invention est caractérisée en ce qu'il est prévu un rail séparateur d'arc électrique (34), grâce auquel ledit arc électrique (L) lorsqu'il se forme directement, ou lorsqu'il est établi directement, se scinde en deux arcs électriques (L1), (L2).
EP07704579A 2006-06-22 2007-02-14 Dispositif de commutation de puissance ou disjoncteur de protection Withdrawn EP2030211A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610028696 DE102006028696A1 (de) 2006-06-22 2006-06-22 Leistungsschalter oder Leitungsschutzschalter
PCT/EP2007/051444 WO2007147648A1 (fr) 2006-06-22 2007-02-14 Dispositif de commutation de puissance ou disjoncteur de protection

Publications (1)

Publication Number Publication Date
EP2030211A1 true EP2030211A1 (fr) 2009-03-04

Family

ID=38030217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07704579A Withdrawn EP2030211A1 (fr) 2006-06-22 2007-02-14 Dispositif de commutation de puissance ou disjoncteur de protection

Country Status (5)

Country Link
EP (1) EP2030211A1 (fr)
CN (1) CN101473393B (fr)
BR (1) BRPI0713583A2 (fr)
DE (1) DE102006028696A1 (fr)
WO (1) WO2007147648A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008021025B4 (de) * 2007-04-28 2024-07-18 Abb Ag Lichtbogenlöschblechanordnung und ein Installationsschaltgerät mit solch einer Lichtbogenlöschblechanordnung
ES2387259T3 (es) * 2010-04-16 2012-09-19 Abb Technology Ag Unidad de conmutación y disyuntor de circuito para un circuito de media tensión
DE102011089234B4 (de) * 2010-12-21 2021-02-04 Siemens Aktiengesellschaft Lichtbogen-Löschvorrichtung und Schutzschaltgerät
CN102664113A (zh) * 2012-05-16 2012-09-12 安文胜 一种以阻燃绝缘隔板为分断介质的电器开关
EP2750156A1 (fr) * 2012-12-27 2014-07-02 Hager Electro Sas Circuit électrique d'un disjoncteur sélectif

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE728612C (de) * 1934-10-20 1942-11-30 Siemens Ag Schalter mit Lichtbogenkammer
DE1071208B (fr) * 1958-05-07
DE1160922B (de) * 1962-02-03 1964-01-09 Siemens Ag Lichtbogenkammer fuer Gleich- und Wechselstromschalter
DE2629408A1 (de) * 1976-06-30 1978-01-05 Siemens Ag Elektrischer schalter
IT1129691B (it) * 1980-01-31 1986-06-11 Elettromeccanica Spa Cge Comp Complesso di estinzione rapida dell'arco elettrico in dispositivi di interruzione come interruttori elettrici
FR2584230B1 (fr) * 1985-06-28 1989-02-03 Merlin Gerin Chambre d'extinction d'arc pour disjoncteur a basse tension a coupure dans l'air
DE3908102A1 (de) * 1989-03-13 1990-09-20 Licentia Gmbh Selbstschalter, insbesondere leitungsschutzschalter
DE60030840T2 (de) * 1999-12-02 2007-03-15 Mitsubishi Denki K.K. Leistungsschalter
CN2464591Y (zh) * 2001-01-09 2001-12-12 王志宏 地铁轨道消弧装置
DE10119626A1 (de) * 2001-04-20 2002-11-28 Abb Patent Gmbh Installationsschaltgerät

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007147648A1 *

Also Published As

Publication number Publication date
CN101473393A (zh) 2009-07-01
WO2007147648A1 (fr) 2007-12-27
CN101473393B (zh) 2012-07-18
BRPI0713583A2 (pt) 2012-10-23
DE102006028696A1 (de) 2007-12-27

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