EP1615247B1 - Dispositif d'extinction d'arc électrique pour disjoncteur de protection - Google Patents

Dispositif d'extinction d'arc électrique pour disjoncteur de protection Download PDF

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Publication number
EP1615247B1
EP1615247B1 EP04405431A EP04405431A EP1615247B1 EP 1615247 B1 EP1615247 B1 EP 1615247B1 EP 04405431 A EP04405431 A EP 04405431A EP 04405431 A EP04405431 A EP 04405431A EP 1615247 B1 EP1615247 B1 EP 1615247B1
Authority
EP
European Patent Office
Prior art keywords
arc
contact
current
circuit breaker
guide rail
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
EP04405431A
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German (de)
English (en)
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EP1615247A1 (fr
Inventor
Tudor Baiatu
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
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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 ES04405431T priority Critical patent/ES2312947T3/es
Priority to AT04405431T priority patent/ATE407441T1/de
Priority to EP04405431A priority patent/EP1615247B1/fr
Priority to DE502004007984T priority patent/DE502004007984D1/de
Priority to US11/152,257 priority patent/US7220933B2/en
Priority to CNB2005100798794A priority patent/CN100527302C/zh
Publication of EP1615247A1 publication Critical patent/EP1615247A1/fr
Application granted granted Critical
Publication of EP1615247B1 publication Critical patent/EP1615247B1/fr
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
    • 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
    • H01H9/42—Impedances connected with 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
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet

Definitions

  • the present invention relates to the field of power switches for low voltage distribution networks. It relates to an arc quenching device for circuit breaker according to the preamble of patent claim 1.
  • installation circuit-breakers are used to rapidly and reliably protect low-voltage lines, motors, equipment, and equipment from the effects of overload and short-circuit currents. They generally comprise a bimetallic thermal release and a solenoid with a coil and a hammer, and preferably a double-break contact arrangement, i. with two series-connected contact points per pole with associated arc extinguishing chambers.
  • a normal circuit breaker has a contact point, which is formed of a fixed and a movable contact piece.
  • the contact point is located in a so-called prechamber, to which a quenching chamber with an arc splitter stack connects.
  • the foot points of the arc are routed away from the fixed and movable contact pieces via arc runners to the arc splitter stack.
  • the arc itself already acts to limit the current. It expands immediately after opening the contact point and its inlet velocity into the arc splitter stack is further dependent on the so-called own blowing, ie the generated by the arc itself magnetic blowing field, the pressure conditions in the arc, the shape of the rails and the choice of contact material.
  • WO 99/14776 is a switching device with two series-connected and driven by a rotational movement contact points described. Electrically parallel to a first contact point, a permanent parallel contact path with a flexible conductor piece and a block-shaped element made of a polymer PTC resistor for improved current limitation is provided. If the two contact points open, an arc forms over the second contact point, while the current to be disconnected flows parallel to the first contact point through the polymer PTC resistor and is limited by this.
  • US 5,777,286 discloses a protection device with an arc quenching device for protecting an electrical assembly.
  • the protection device is connected together with the module to be protected between a power source and a load.
  • the module to be protected can either be connected in the current path or separated therefrom, whereby it is protected against the effects of a short circuit or overcurrent.
  • the protective device on the arc quenching device.
  • Object of the present invention is to provide an arc quenching device with improved current limiting and reduced heat loss, in which the movable contact piece is spared from increased burnup and wear.
  • This object is achieved by an arc quenching device for circuit breaker with the features of claim 1 and a protective circuit with the features of claim 10. Further advantageous embodiments will become apparent from the dependent claims.
  • the essence of the invention is to provide an erase path with an arc track and a current-limiting element on the side of the movable contact piece of a contact point and form such that an arc base of the movable bridge contact can easily switch or commutate the arc track.
  • a second arc runner is provided, which immediately, i. without a galvanic separation point, connects to the immovable contact piece of the contact point and directs the second base point of the arc to the arc extinguishing chamber.
  • a second fixed contact via a movable conductor or a joint with the contact bridge is electrically connected.
  • a contact arrangement with double interruption on a second contact point so that two arcs emanating from two series-connected bridge contacts on the movable contact bridge.
  • Such a configuration is particularly easy to implement by operating the second-contact arc-extinguishing device in a conventional double-breaker circuit breaker, i. at least the corresponding splitter stack, is replaced by the current-limiting element, while the quenching chamber of the first contact point remains unchanged.
  • the second quenching chamber is thus short-circuited by a current-limiting conductor loop.
  • the current-limiting element is formed by a dimensionally stable conductor loop, which is shaped such that at least in a blowing section, the current direction of the cut-off current to be limited parallel to the current direction in the adjacent, to be deleted arc precipitates. This creates a magnetic blowing action on the latter, i. the running properties of the arc in the opposite antechamber are favored.
  • the erase path in nominal operation, ie when the switch contact is closed, no current, this does not affect the intrinsic impedance of the switch and hampers due to their low initial or cold resistance of a few m ⁇ and the commutation of the Arc on the appropriate arc track not. After the arc has commutated, the erase path is also current-flowed, as a result of which its impedance increases, limits the turn-off current and allows a simpler and safer erasure.
  • FIG. 1 an oblique view of a preferred embodiment of the inventive extinguishing device based on a circuit breaker with double break.
  • Fig.1 shows a section of a single or multi-pole circuit breaker with two series-connected switching contacts per pole.
  • a first terminal leads via the coil of a short-circuit current release (both not shown) and a first connection conductor 11 to a first fixed contact 21. This is in the closed switch position (not shown) in electrical contact with a first bridge contact 31 of a movable fork-shaped contact bridge 3.
  • a second Bridge contact 32 of the contact bridge 3 is in the closed switch position in contact with a second fixed contact 22, which leads via a second connecting conductor 12 on to an overcurrent release, not shown, and to a second terminal. Both contact points formed by a fixed and bridge contact each have a first or second prechamber assigned.
  • Illustrated extinguishing device is based on a circuit breaker with double break.
  • a second contact point is formed by a second bridge contact 32 and the second fixed contact 22, to which a second bridge-side arc runner rail 62 and a second connection-side arc runner rail 52 connect.
  • a second arc is passed to a second arc splitter stack at the end of the rails 52,62, the quenching plates are replaced by a current-limiting element 8 in a modified according to the invention switching device.
  • the current-limiting element 8 has the form of a dimensionally stable conductor loop. From this conductor loop, a so-called blowing section 81 comes spatially closest to the first pre-chamber and thus to the arc to be extinguished.
  • the identical current flow direction in the blowing section 81 and the arc provides an additional magnetic blowing or suction action on the arc.
  • the current-limiting element 8 comprises a conductor with an electrical resistance which increases with increasing current, that is, for example metals with a positive linear or non-linear temperature coefficient of resistivity such as copper, iron, nickel, aluminum and alloys based on at least one of these metals, or the metallic alloys based on Ni, Co, Fe, known as PTC resistor (positive temperature coefficient), such as NiCr, NiMn, NiFe, NiCrMn, NiCo, NiCoFe, CoFe, CrAlFe, or even ceramic materials.
  • PTC resistor positive temperature coefficient
  • PTC thermistor is based on a polymer composite whose polymer matrix is filled with a mixture of carbon, a metal such as Ni, and a boride, silicide, oxide or carbide such as TiC 2 , TiB 2 , MoSi 2 , V 2 O 3 . It is important that the initial or cold resistance is not too high and the commutation of the arc on the bridge side rail 61 and the concomitant commissioning of the erase path is not hindered.

Landscapes

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

Claims (10)

  1. Dispositif d'extinction d'arc lumineux pour commutateur de protection, qui comprend :
    - un premier et un deuxième contact fixe (21, 22) qui peuvent être reliés aux bornes de raccordement du commutateur de protection,
    - un parcours de contact qui conduit le courant entre les contacts fixes (21, 22) lorsque le commutateur est en position fermée, qui comprend un pont mobile de contact (3) doté d'un premier contact de pont (31) qui forme un premier emplacement de contact avec le premier contact fixe (21),
    - une pré-chambre dotée d'un premier rail (61) à arc lumineux qui reprend l'arc lumineux qui se forme lors de l'ouverture du premier emplacement de contact et une chambre d'extinction (71) qui se raccorde à la pré-chambre pour éteindre cet arc lumineux,
    - un parcours d'extinction qui n'est pas traversé par un courant lorsque le commutateur est en position fermée et qui comprend le premier rail (61) à arc lumineux et un élément (8) de limitation du courant, le premier rail (61) à arc lumineux étant configuré de manière à faire reprendre par le premier contact de pont (31) le point de pied de l'arc lumineux situé du côté du pont,
    caractérisé en ce que
    le parcours d'extinction est relié au deuxième contact fixe (22).
  2. Dispositif d'extinction d'arcs lumineux selon la revendication 1, caractérisé en ce qu'un deuxième rail (51) à arc lumineux est relié au premier contact fixe (21) et est configuré de manière à reprendre le point de pied de l'arc lumineux situé du côté du raccordement.
  3. Dispositif d'extinction d'arcs lumineux selon les revendications 1 ou 2, caractérisé en ce que le deuxième contact fixe (22) forme avec un deuxième contact de pont (32) du pont de contact (3) un deuxième emplacement de contact d'un commutateur de protection à double interruption.
  4. Dispositif d'extinction d'arcs lumineux selon la revendication 3, caractérisé en ce que le parcours d'extinction comprend un deuxième rail (62) à arc lumineux situé du côté du pont et un deuxième rail (52) à arc lumineux situé du côté du raccordement dans une deuxième pré-chambre, l'élément (8) de limitation du courant étant prévu entre le deuxième rail (62) à arc lumineux situé du côté du pont et le deuxième rail (52) à arc lumineux situé du côté du raccordement à l'emplacement d'un deuxième bloc de tôle d'extinction d'arcs lumineux.
  5. Dispositif d'extinction d'arcs lumineux selon la revendication 4, caractérisé en ce que l'élément (8) de limitation du courant présente une partie de soufflage (81) dans laquelle un courant d'extinction s'écoule parallèlement au courant dans l'arc lumineux.
  6. Dispositif d'extinction d'arcs lumineux selon l'une des revendications 1 à 5, caractérisé en ce que l'élément (8) de limitation du courant comprend une résistance à base de cuivre.
  7. Dispositif d'extinction d'arcs lumineux selon l'une des revendications 1 à 5, caractérisé en ce que l'élément (8) de limitation du courant comprend une résistance CTP.
  8. Dispositif d'extinction d'arcs lumineux selon l'une des revendications 1 à 5, caractérisé en ce que l'élément (8) de limitation du courant comprend un matériau céramique.
  9. Dispositif d'extinction d'arcs lumineux selon l'une des revendications 1 à 5, caractérisé en ce que l'élément (8) de limitation du courant comprend un composite polymère.
  10. Circuit de protection qui présente un premier commutateur de protection doté d'un dispositif d'extinction d'arc lumineux selon l'une des revendications précédentes, caractérisé en ce qu'un deuxième commutateur de protection lui est raccordé en série.
EP04405431A 2004-07-08 2004-07-08 Dispositif d'extinction d'arc électrique pour disjoncteur de protection Expired - Lifetime EP1615247B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ES04405431T ES2312947T3 (es) 2004-07-08 2004-07-08 Dispositivo de extincion de arco electrico para interruptores de proteccion.
AT04405431T ATE407441T1 (de) 2004-07-08 2004-07-08 Lichtbogenlöscheinrichtung für schutzschalter
EP04405431A EP1615247B1 (fr) 2004-07-08 2004-07-08 Dispositif d'extinction d'arc électrique pour disjoncteur de protection
DE502004007984T DE502004007984D1 (de) 2004-07-08 2004-07-08 Lichtbogenlöscheinrichtung für Schutzschalter
US11/152,257 US7220933B2 (en) 2004-07-08 2005-06-15 Arc quenching device for circuit breakers
CNB2005100798794A CN100527302C (zh) 2004-07-08 2005-06-29 用于断路器的弧灭熄装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04405431A EP1615247B1 (fr) 2004-07-08 2004-07-08 Dispositif d'extinction d'arc électrique pour disjoncteur de protection

Publications (2)

Publication Number Publication Date
EP1615247A1 EP1615247A1 (fr) 2006-01-11
EP1615247B1 true EP1615247B1 (fr) 2008-09-03

Family

ID=34932188

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04405431A Expired - Lifetime EP1615247B1 (fr) 2004-07-08 2004-07-08 Dispositif d'extinction d'arc électrique pour disjoncteur de protection

Country Status (6)

Country Link
US (1) US7220933B2 (fr)
EP (1) EP1615247B1 (fr)
CN (1) CN100527302C (fr)
AT (1) ATE407441T1 (fr)
DE (1) DE502004007984D1 (fr)
ES (1) ES2312947T3 (fr)

Cited By (1)

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DE102010019429A1 (de) * 2010-05-05 2011-11-10 Siemens Aktiengesellschaft Lichtbogenlöscheinrichtung für ein Schutzschaltgerät sowie Schutzschaltgerät

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KR100654013B1 (ko) * 2005-02-21 2006-12-05 엘에스전선 주식회사 Ｐｔｃ 한류소자를 이용한 순차트립 차단기
DE102006026064B4 (de) * 2006-06-03 2008-06-05 Moeller Gmbh Elektrische Schaltanordnung und Montageverfahren
CN100435253C (zh) * 2006-11-24 2008-11-19 西安交通大学 一种高速双断口磁吹中压大电流直流限流断路器
EP2561534B1 (fr) 2010-04-19 2018-07-11 CARLING TECHNOLOGIES, Inc. Interrupteur de circuit à capacités améliorées d'extinction d'arc
US8773235B2 (en) * 2011-11-30 2014-07-08 General Electric Company Electrical switch and circuit breaker
WO2014182808A1 (fr) * 2013-05-08 2014-11-13 Reinhold Henke Suppresseur d'arc passif
DE102014002902B4 (de) * 2014-02-27 2019-08-01 Schaltbau Gmbh Löschkammer für ein Schütz und ein Schütz zum Löschen von Lichtbögen
CN107622898B (zh) * 2017-11-01 2019-09-27 明光诚信电子贸易有限公司 一种具有弧形导轨的电力断路器的灭弧机构
CN107731596B (zh) * 2017-11-01 2019-11-12 江苏一开电力科技有限公司 一种采用齿轮的电力断路器的灭弧机构
CN107742599B (zh) * 2017-11-01 2020-03-31 国网湖北省电力有限公司随州供电公司 一种具有齿轮的电力断路器的灭弧机构
CN107785197B (zh) * 2017-11-01 2019-10-18 安徽龙和电力集团有限公司 一种基于弧形导轨的电力断路器的灭弧机构
CN107622897B (zh) * 2017-11-01 2019-09-27 明光诚信电子贸易有限公司 一种采用弧形导轨的电力断路器的灭弧机构
CN107731595B (zh) * 2017-11-01 2019-07-23 广州紫研电气科技有限公司 一种基于齿轮的电力断路器的灭弧机构
CN208240528U (zh) * 2018-04-19 2018-12-14 施耐德电气工业公司 静触头组件和相应的开关触头

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
DE102010019429A1 (de) * 2010-05-05 2011-11-10 Siemens Aktiengesellschaft Lichtbogenlöscheinrichtung für ein Schutzschaltgerät sowie Schutzschaltgerät
DE102010019429B4 (de) 2010-05-05 2019-02-21 Siemens Aktiengesellschaft Lichtbogenlöscheinrichtung für ein Schutzschaltgerät sowie Schutzschaltgerät

Also Published As

Publication number Publication date
ES2312947T3 (es) 2009-03-01
ATE407441T1 (de) 2008-09-15
CN100527302C (zh) 2009-08-12
US20060006145A1 (en) 2006-01-12
DE502004007984D1 (de) 2008-10-16
US7220933B2 (en) 2007-05-22
EP1615247A1 (fr) 2006-01-11
CN1719562A (zh) 2006-01-11

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