EP0123090B1 - Selbstschalter, insbesondere Leitungsschutzschalter - Google Patents

Selbstschalter, insbesondere Leitungsschutzschalter Download PDF

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Publication number
EP0123090B1
EP0123090B1 EP84102605A EP84102605A EP0123090B1 EP 0123090 B1 EP0123090 B1 EP 0123090B1 EP 84102605 A EP84102605 A EP 84102605A EP 84102605 A EP84102605 A EP 84102605A EP 0123090 B1 EP0123090 B1 EP 0123090B1
Authority
EP
European Patent Office
Prior art keywords
plates
arc
chamber
contacts
circuit
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
Application number
EP84102605A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0123090A2 (de
EP0123090A3 (en
Inventor
Elmar Fischer
Reinhard Sangl
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
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 filed Critical Siemens AG
Priority to AT84102605T priority Critical patent/ATE30809T1/de
Publication of EP0123090A2 publication Critical patent/EP0123090A2/de
Publication of EP0123090A3 publication Critical patent/EP0123090A3/de
Application granted granted Critical
Publication of EP0123090B1 publication Critical patent/EP0123090B1/de
Expired 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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/346—Details concerning the arc formation chamber
    • 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
    • H01H9/302—Means for extinguishing or preventing arc between current-carrying parts wherein arc-extinguishing gas is evolved from stationary parts

Definitions

  • the invention relates to a circuit breaker, in particular a circuit breaker, with an arc-running aid according to the preamble of claim 1 and is based on DE-B-11 85 269.
  • Such automatic switches are known (for example DE-A-30 30 429).
  • An arc aid is then achieved in the usual way for entering the arc into a quenching chamber, which is in particular equipped with quenching plates, in that the fixed contact and switch contact form a U-shaped current loop together with the power line and in that plates made of magnetically conductive material are embedded in electrically insulating material are arranged parallel to the plane of the contact movement, as was already known (DE-B-1012662, DE-C-480802).
  • DE-B-1012662, DE-C-480802 With such arcing aids, one can do without one of the additional blow coils frequently used at that time (DE-C-480 802).
  • the plates for the arc running aid are expediently provided with a coating of electrically insulating material (DE-B 10 61866, DE-B-1012 662, DE-C-914 869). It was also known here to use a gas-releasing material in the case of self-switches with arcing aids (DE-C-914 869; DE-C 11 85 274. DE-C-28 06 663).
  • guide plates are used for the arc, often made of insulating material, which extend from the contacts to the quenching chamber, in which quenching plates are generally arranged. Many circuit breakers on the market show such a structure.
  • the invention has for its object to develop a self-switch, in which the arc finds a particularly low flow resistance in the direction of its entry into the quenching chamber by a known flow around technology is solved differently.
  • sealing bodies are arranged on a narrow side of the arc chamber from the contacts to the quenching chamber and air gaps are left free on the opposite narrow side, and that a seal is also formed between the plates and the housing wall.
  • the flow around the auto switch according to the invention takes place in the plane of the contact movement. It is particularly important here that the lateral plates guiding the arc can be brought close to the arc or the contacts, as a result of which the drive on the arc is particularly strong.
  • the drive effect by the gas-emitting material can be used particularly intensively, since on the one hand the strong gas flow can be used due to the special flow conditions, on the other hand this cannot lead to a pressure exceeding the strength of the arc chamber and the subsequent quenching chamber. Because of the desirably dense arrangement of the plates, a flow around the cross-sectional plane of the arc cannot make any significant contribution.
  • the plates each form an essentially plate-shaped depression in the region of the opening path of the contacts, in order to achieve a greater distance between the contacts and the gas-emitting coating of the plates than outside the contact path. This ensures that under the action of the arc on the gas-emitting, electrically insulating coating of the plates, such carbonization cannot occur that could bridge the contact path as a creepage distance.
  • the plates can be arranged particularly close to one another. Since there is no flow behind the plates, that is between the plates and the housing wall, the automatic switch can also be made particularly narrow.
  • the plates Since there is no flow behind the plates, i.e. between the plates and the housing wall, the plates need only be coated on their contact side and at their edges.
  • the coating can be held on the plates like a push button. This means that even thin layers are reliably attached. In particular, this allows the distance to the contacts to be increased in the region of the plate-shaped depression.
  • the arc chamber can be particularly well sealed on its narrow side from the contacts to the extinguishing chamber in that the sealing bodies are formed as a web-like lip molded onto the coating of the plates, which collides with the lip of the counterplate, this butt joint being provided by an upstream one Arc guide rail to the arcing chamber is covered.
  • the sealing bodies are formed as a web-like lip molded onto the coating of the plates, which collides with the lip of the counterplate, this butt joint being provided by an upstream one Arc guide rail to the arcing chamber is covered.
  • a circuit breaker has contacts actuated by a switch lock 1, the switch contact 2 and the fixed contact 3. These are arranged in an arcing chamber 4 which merges into an arcing chamber 5.
  • the switch lock 1, a magnetic and / or thermal release device 6 and the contacts 2 and 3 as well as the arc chamber 4 and the extinguishing chamber 5 are arranged in a housing 7 with the connecting terminals 8 and the fastening means 9.
  • the self-switch can also be designed as another self-triggering switch, for example as a device circuit breaker.
  • the self-switch has various measures to promote the arc running: Fixed contact 3 and switching contact 2 together with the power supply line 10 form a U-shaped current loop. Based on the drawing, plates made of magnetically conductive material are arranged in the arc chamber, starting from the contacts behind the drawing plane and in front of the drawing plane, that is to say parallel to the plane of the contact movement, which the contacts carry out until they open. The plates 11 made of magnetically conductive material are provided with a coating 12 made of heat-emitting, electrically insulating material.
  • a seal is also formed between the plates 11 with the coating 12 and the wall of the housing 7, that is to say the housing wall.
  • This seal comes about according to FIG. 2 in that the plates rest on the edge of the housing and are exposed on their intermediate rear side, so that a full support is guaranteed at the edge of the plates.
  • This seal supports the effect of the sealing bodies 14 on one narrow side of the arc chamber 4.
  • the sealing bodies 14 are formed by a web-like lip 15 molded onto the coating 12 of the plates, which collides with the lip of the counterplate.
  • This butt joint is covered by an upstream arc guide rail 16, which leads an arc base to the quenching chamber 5, in which, in the exemplary embodiment, quenching plates 17 are arranged.
  • the special arrangement of the plates 11 in the arc chamber 4 ensures that the gases, seen in the direction of the arc, can flow back in front of the arc up to behind the arc in the plane in which the contact movement takes place.
  • This flow is illustrated by arrow 13. 1 can use the known arc running aid of the contact arrangement in relation to the direction of the quenching plates 17, which can be described so that the imaginary axis of the U-shaped current loop through the contacts perpendicular to the direction of the quenching plates 17th stands.
  • the plates 11 each have essentially plate-shaped depressions 18 - see FIG. 2 - which also have an effect on the coating 12 as an impression. This results in a greater distance between the contacts 2 and 3 and the gas-emitting coating 12 of the plates 11, namely a greater distance than contacts outside the opening path.
  • the plates 11 have an opening 19 in their recess 18, through which material of the gas-emitting insulating layer engages or penetrates.
  • the coating 12 is fastened to the plates 11 in the central region in the manner of a push button.
  • FIG. 3 shows a single plate 11 with a coating 12 in cross section, on the coating of which a lip 15 is formed is.
  • the integrally formed web-like lip 15 is formed according to FIG. 4 along the narrow side, which in the installed state according to FIG. 1 forms the imaginary connection from the fixed contact 3 to the arcing chamber 5.
  • air gaps remain between the movable contact 2 and the walking aid 20 and the coated plates 11. Further air gaps for the flow remain on the narrow side forming the air gaps between the individual components.
  • One arc base point can enter the arcing chamber 5 via the arc guide rail 16 and the other base point of the arc via the walking aid 20.
  • the transition of the movable contact 2 into the open position is illustrated in its central position by the movable contact 21 shown in dotted lines. In the open state, the movable contact 2 lies against the walking aid 20 with its rear side.
  • a quenching chamber known per se, which, viewed in the direction of the arc, discharges gases at the end of the quenching plates 17 not only into the open through a gas outlet duct 22, but also because of a web-like subdivision 23 over the interior of the Switch partially returns in the direction of arrow 24.
  • Auto switches with such quenching chambers are on the market, however, without an arc chamber 4 which enables the special flow around them, with the seal on one narrow side and the seal between the guide plates flanking the arc on the side, which in conventional switches of this type are used as boundary plates made of ceramic or insulating material are formed without a magnetically conductive material.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
  • Keying Circuit Devices (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Burglar Alarm Systems (AREA)
  • Circuit Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Lock And Its Accessories (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Valve Device For Special Equipments (AREA)
EP84102605A 1983-03-25 1984-03-09 Selbstschalter, insbesondere Leitungsschutzschalter Expired EP0123090B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84102605T ATE30809T1 (de) 1983-03-25 1984-03-09 Selbstschalter, insbesondere leitungsschutzschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3311052 1983-03-25
DE19833311052 DE3311052A1 (de) 1983-03-25 1983-03-25 Selbstschalter, insbesondere leitungsschutzschalter

Publications (3)

Publication Number Publication Date
EP0123090A2 EP0123090A2 (de) 1984-10-31
EP0123090A3 EP0123090A3 (en) 1985-05-29
EP0123090B1 true EP0123090B1 (de) 1987-11-11

Family

ID=6194741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102605A Expired EP0123090B1 (de) 1983-03-25 1984-03-09 Selbstschalter, insbesondere Leitungsschutzschalter

Country Status (9)

Country Link
US (1) US4585912A (ja)
EP (1) EP0123090B1 (ja)
JP (1) JPS59181439A (ja)
AT (1) ATE30809T1 (ja)
DE (2) DE3311052A1 (ja)
DK (1) DK164616C (ja)
ES (1) ES286555Y (ja)
PT (1) PT78296B (ja)
ZA (1) ZA842159B (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3908102A1 (de) * 1989-03-13 1990-09-20 Licentia Gmbh Selbstschalter, insbesondere leitungsschutzschalter
DE4007606A1 (de) * 1990-03-09 1991-09-12 Licentia Gmbh Selbstschalter, insbesondere leitungsschutzschalter

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3443121A1 (de) * 1984-11-27 1986-05-28 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer leitungsschutzschalter
DE3443122A1 (de) * 1984-11-27 1986-05-28 Brown, Boveri & Cie Ag, 6800 Mannheim Vorrichtung zur unterbrechung von stromkreisen
DE3501314A1 (de) * 1985-01-16 1986-07-17 Siemens AG, 1000 Berlin und 8000 München Mehrpoliger leitungsschutzschalter
JPS6381711A (ja) * 1986-09-25 1988-04-12 松下電工株式会社 接点装置
SE457032B (sv) * 1987-03-25 1988-11-21 Asea Ab Elektrisk kopplingsapparat
FR2622736B1 (fr) * 1987-10-28 1995-04-14 Merlin Gerin Disjoncteur basse tension, a courant continu, et a joues de guidage de l'arc
DE3824025C2 (de) * 1988-07-15 1994-02-17 Asea Brown Boveri Niederspannungsschaltgerät
EP0586724B1 (de) * 1992-09-07 1995-06-07 Siemens Aktiengesellschaft Selbstschalter, beispielsweise Leistungsschutzschalter
US5608198A (en) * 1995-06-26 1997-03-04 Square D Company Circuit breaker arrangement for protection against electrical arcs
FR2750795B1 (fr) * 1996-07-05 1998-09-25 Schneider Electric Sa Dispositif de coupure pour un disjoncteur electrique a forts calibres
US20050263492A1 (en) * 2004-05-28 2005-12-01 Siemens Energy & Automation, Inc. Molded arc chute
DE102005007282A1 (de) * 2005-02-17 2006-08-24 Abb Patent Gmbh Elektrisches Installationsgerät mit Lichtbogen-Vorkammerraum, Vorkammerplatten und strombegrenzender Lichtbogenlöscheinrichtung
FR2916571B1 (fr) * 2007-05-22 2009-09-11 Schneider Electric Ind Sas Chambre de coupure et disjoncteur equipe d'une telle chambre de coupure
DE102007025537A1 (de) * 2007-05-31 2008-12-04 Abb Ag Elektrisches Installationsschaltgerät mit einer Lichtbogenblaseinrichtung
US8164018B2 (en) * 2009-03-23 2012-04-24 Siemens Industry, Inc. Circuit breaker arc chambers and methods for operating same
DE102009057093B4 (de) * 2009-12-04 2011-12-15 Abb Ag Installationsschaltgerät mit einer Lichtbogenlöscheinrichtung
CN103021706B (zh) * 2012-12-28 2015-06-17 常熟开关制造有限公司(原常熟开关厂） 具有电弧隔离套的电开关装置
DE102014119474A1 (de) * 2014-12-22 2016-06-23 Eaton Electrical Ip Gmbh & Co. Kg Löschblechanordnung für ein Schaltgerät
DE102015217704A1 (de) 2015-09-16 2017-03-16 Siemens Aktiengesellschaft Lichtbogen-Löschvorrichtung und Schutzschaltgerät
DE102015217694A1 (de) 2015-09-16 2017-03-16 Siemens Aktiengesellschaft Lichtbogen-Löschvorrichtung und Schutzschaltgerät
CN108231505B (zh) * 2018-01-18 2023-09-05 浙江正泰电器股份有限公司 灭弧出气通道以及断路器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2435698B1 (de) * 1974-07-25 1976-01-29 Licentia Patent-Verwaltungs-GmbH, 600Ö Frankfurt Strombegrenzender leitungsschutzschalter mit zwei lichtbogenkammern

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2337949A (en) * 1942-05-29 1943-12-28 Gen Electric Circuit breaker
GB895202A (en) * 1958-01-01 1962-05-02 Ass Elect Ind Improvements in and relating to the making of arc chute side and splitter plates
US3021409A (en) * 1959-09-24 1962-02-13 Gen Electric Circuit interrupter
DE1185269C2 (de) * 1961-08-21 1975-05-15 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Einpoliger selbstschalter in schmalbauform
DE2841004C2 (de) * 1978-09-21 1980-10-02 Licentia Gmbh Leitungsschutzschalter mit zusätzlicher Blasschleife
JPS5644458U (ja) * 1979-09-14 1981-04-22
JPS5663736A (en) * 1979-10-27 1981-05-30 Fuji Electric Co Ltd Device for extinguishing circuit breaker
JPS56121239A (en) * 1980-02-29 1981-09-24 Matsushita Electric Works Ltd Device for extinguishing circuit breaker

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2435698B1 (de) * 1974-07-25 1976-01-29 Licentia Patent-Verwaltungs-GmbH, 600Ö Frankfurt Strombegrenzender leitungsschutzschalter mit zwei lichtbogenkammern

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3908102A1 (de) * 1989-03-13 1990-09-20 Licentia Gmbh Selbstschalter, insbesondere leitungsschutzschalter
DE4007606A1 (de) * 1990-03-09 1991-09-12 Licentia Gmbh Selbstschalter, insbesondere leitungsschutzschalter

Also Published As

Publication number Publication date
ATE30809T1 (de) 1987-11-15
DE3467465D1 (en) 1987-12-17
ZA842159B (en) 1984-10-31
DK164616C (da) 1992-12-07
ES286555U (es) 1985-11-01
ES286555Y (es) 1986-06-01
US4585912A (en) 1986-04-29
EP0123090A2 (de) 1984-10-31
PT78296A (de) 1984-04-01
JPH0247816B2 (ja) 1990-10-23
PT78296B (de) 1986-03-11
DK77184D0 (da) 1984-02-20
EP0123090A3 (en) 1985-05-29
DK77184A (da) 1984-09-26
JPS59181439A (ja) 1984-10-15
DE3311052A1 (de) 1984-09-27
DK164616B (da) 1992-07-20

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