EP0045904A1 - Chambre d'extinction d'arc - Google Patents

Chambre d'extinction d'arc Download PDF

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Publication number
EP0045904A1
EP0045904A1 EP81105993A EP81105993A EP0045904A1 EP 0045904 A1 EP0045904 A1 EP 0045904A1 EP 81105993 A EP81105993 A EP 81105993A EP 81105993 A EP81105993 A EP 81105993A EP 0045904 A1 EP0045904 A1 EP 0045904A1
Authority
EP
European Patent Office
Prior art keywords
arc
contact point
fixed contact
contact piece
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.)
Withdrawn
Application number
EP81105993A
Other languages
German (de)
English (en)
Inventor
Erhard Ing. Grad. Runtsch
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.)
BBC Brown Boveri AG Germany
Original Assignee
Brown Boveri und Cie AG Germany
BBC Brown Boveri AG Germany
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 Brown Boveri und Cie AG Germany, BBC Brown Boveri AG Germany filed Critical Brown Boveri und Cie AG Germany
Publication of EP0045904A1 publication Critical patent/EP0045904A1/fr
Withdrawn legal-status Critical Current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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/38—Electromagnetic mechanisms wherein the magnet coil also acts as arc blow-out device
    • 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
    • H01H9/446—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the contacts

Definitions

  • the invention relates to an arc quenching chamber for an electrical installation switching device, in particular for a circuit breaker, with at least one contact point formed from a movable and a fixed contact piece, the fixed contact piece of each contact point being fastened to a connecting piece which merges into an arc guide rail, and with a Iron sheet metal parts arranged on both sides of each contact point and covered with gas-releasing insulating material.
  • circuit breakers In recent years, the trend in circuit breakers has been towards higher switching capacities, lower switching and power dissipation, and higher nominal current ratings, so that the contact points are opened at ever higher current values.
  • arc extinguishing chambers of L maybe arc quenching plates and surrounds the arc splitter stack with tracking resistant sheathing, so that restriking can be prevented on the outer side of the arc splitter stack (comp. DE-OS 24 10 049).
  • a further step in this way can be found in DE-AS 26 16 825. Thereafter, at least one of the arc-quenching plates is covered with an insulating material that partially covers it. This measure also leads to the prevention of backfire outside the arc quenching plate package.
  • Another solution that was envisaged was to provide gas-emitting ceramic plates.
  • the present invention is therefore based on the object of designing an arc quenching chamber of the type mentioned at the outset in such a way that the magnetic blowing of the arc is improved, the quenching properties also being improved at the same time without the gas pressure becoming critical for the housing.
  • An advantageous embodiment of the invention can consist in that the sheet iron parts are designed as a tab of a bracket which is attached to the fixed contact piece.
  • the sheet iron parts can also be formed as lateral tabs on the arc guide rail.
  • the sheet iron parts are formed as a tab on the yoke and on the core of the magnetic release.
  • the insulating material is put on the tabs in the form of bag-like insulating material parts.
  • the insulating material preferably consists of an arc-resistant, gas-emitting material. Due to the pocket-like design of the insulating material, all-round, safe insulation of the sheet iron parts is achieved.
  • a circuit breaker which has a T-shape, has a switch lock 12, an electromagnetic release 14, a thermal release 16 in the form of a bimetal, indicated schematically in the interior of a housing 10, both of which are via the switch lock 12 or - as far as the electromagnetic release is concerned -
  • the fixed contact piece 26 is fastened to one leg 28 of an L-shaped connecting lug 30, the other leg 32 of the connecting lug receiving a connecting terminal 34.
  • the leg 28 is adjoined - overlapping it - by an approximately L-shaped arc baffle 36, which covers an arc baffle plate pack 38 consisting of a plurality of quenching plates. It can be seen from FIG. 1 that the arc extinguishing plates 38 are aligned perpendicular to a U-shaped current loop formed by the movable contact lever 22 and the arc guide plate 36.
  • Figure 2 shows the arc quenching chamber from above.
  • the fixed contact 26 is integrally formed on the terminal lug 30, and the movable contact piece 24 is attached to the contact lever 22 (not visible in FIG. 2).
  • the arc extinguishing plate 38a located above, which has a V-shaped recess 40 so that the arc can enter the interior of the arc extinguishing plate packet 38 more quickly.
  • two tabs 42 and 44 are formed on both sides, which take the contact point between them and form a U open towards the arc quenching plate package. These tabs completely cover the contact point when the switch is closed.
  • Pocket-like brackets 46 and 48 made of insulating material are placed around tabs 42 and 44, which insulating material consists of a gas-emitting substance. There is of course also the possibility of simply coating the two tabs 42 and 44 on all sides with the insulating material.
  • an additional, favorable-acting blow is achieved by releasing gas from the insulating material brackets 46 or 48, it also being possible to replace the ceramic plates used in known arc quenching chambers.
  • contact material is saved because, due to better blowing, the distance through the arc is smaller at the contact points.
  • the precious metal layer on the contact pieces can be made smaller.
  • FIGS. 3 and 4 show the corresponding design of the sheet iron parts as tabs 52 of the yoke wall 54 and as tabs 56 on the fixed core 58 of the magnetic release 14. All other parts are designed and shown in the same way as in FIGS. 1 and 2.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP81105993A 1980-08-12 1981-07-30 Chambre d'extinction d'arc Withdrawn EP0045904A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3030429 1980-08-12
DE19803030429 DE3030429A1 (de) 1980-08-12 1980-08-12 Lichtbogenloeschkammer

Publications (1)

Publication Number Publication Date
EP0045904A1 true EP0045904A1 (fr) 1982-02-17

Family

ID=6109427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81105993A Withdrawn EP0045904A1 (fr) 1980-08-12 1981-07-30 Chambre d'extinction d'arc

Country Status (2)

Country Link
EP (1) EP0045904A1 (fr)
DE (1) DE3030429A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158124A2 (fr) * 1984-04-11 1985-10-16 Asea Brown Boveri Aktiengesellschaft Dispositif d'extinction d'arc pour interrupteurs électriques
CN103000466A (zh) * 2011-09-15 2013-03-27 西门子公司 断路器的电弧室组件及其断路器

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3339399A1 (de) * 1983-10-29 1985-05-09 Sursum Elektrizitätsgesellschaft Leyhausen GmbH & Co, 8500 Nürnberg Selbstschalter mit lichtbogenblasfeld
DE3824027A1 (de) * 1988-07-15 1990-01-18 Asea Brown Boveri Elektrisches schaltgeraet
DE4445419A1 (de) * 1994-12-20 1996-06-27 Abb Patent Gmbh Elektrisches Installationsgerät, insbesondere Leitungsschutzschalter
DE102011002714B4 (de) * 2011-01-14 2021-01-14 Siemens Aktiengesellschaft Schutzschaltgerät
DE102011008832A1 (de) * 2011-01-19 2012-07-19 Abb Ag Installationsschaltgerät

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE161173C (fr) *
GB369740A (en) * 1931-03-17 1932-03-31 John Westmoreland Record Improvements in or relating to electric circuit breakers or like circuit rupturing apparatus
FR1247937A (fr) * 1958-04-08 1960-12-09 Disjoncteur à haut pouvoir de coupure
FR1366120A (fr) * 1963-05-28 1964-07-10 App S Thermoflex Etablissement Dispositif de soufflage magnétique de l'arc de coupure d'un interrupteur électrique
FR93908E (fr) * 1967-02-08 1969-06-06 Karel Kesl Perfectionnements aux chambers de soufflage destinées aux disjoncteurs ou contacteurs a pouvoir de coupure élevé.
DE2353830A1 (de) * 1972-10-30 1974-05-09 Legrand Sa Verbesserungen an trennschaltern
DE2704160A1 (de) * 1977-02-02 1978-08-03 Bbc Brown Boveri & Cie Elektrisches schaltgeraet
DE2716619B1 (de) * 1977-04-15 1978-09-07 Licentia Gmbh Strombegrenzender Leitungsschutzschalter mit Massnahmen zur Erhoehung der Laufgeschwindigkeit des Schaltlichtbogens
EP0028740A1 (fr) * 1979-11-01 1981-05-20 Fuji Electric Co. Ltd. Appareil de commutation contenant un dispositif de contact
FR2475290A1 (fr) * 1980-01-31 1981-08-07 Merlin Gerin Chambre de coupure de disjoncteurs basse tension a joues composites de guidage de l'arc

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE161173C (fr) *
GB369740A (en) * 1931-03-17 1932-03-31 John Westmoreland Record Improvements in or relating to electric circuit breakers or like circuit rupturing apparatus
FR1247937A (fr) * 1958-04-08 1960-12-09 Disjoncteur à haut pouvoir de coupure
FR1366120A (fr) * 1963-05-28 1964-07-10 App S Thermoflex Etablissement Dispositif de soufflage magnétique de l'arc de coupure d'un interrupteur électrique
FR93908E (fr) * 1967-02-08 1969-06-06 Karel Kesl Perfectionnements aux chambers de soufflage destinées aux disjoncteurs ou contacteurs a pouvoir de coupure élevé.
DE1790089A1 (de) * 1967-09-11 1972-01-20 Lgz Landis & Gyr Eng Ag Lichtbogenloeschkammer in Schmalbauform fuer Schalter hohen Schaltvermoegens
DE2353830A1 (de) * 1972-10-30 1974-05-09 Legrand Sa Verbesserungen an trennschaltern
FR2204872A1 (fr) * 1972-10-30 1974-05-24 Legrand Sa
DE2704160A1 (de) * 1977-02-02 1978-08-03 Bbc Brown Boveri & Cie Elektrisches schaltgeraet
DE2716619B1 (de) * 1977-04-15 1978-09-07 Licentia Gmbh Strombegrenzender Leitungsschutzschalter mit Massnahmen zur Erhoehung der Laufgeschwindigkeit des Schaltlichtbogens
EP0028740A1 (fr) * 1979-11-01 1981-05-20 Fuji Electric Co. Ltd. Appareil de commutation contenant un dispositif de contact
FR2475290A1 (fr) * 1980-01-31 1981-08-07 Merlin Gerin Chambre de coupure de disjoncteurs basse tension a joues composites de guidage de l'arc

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158124A2 (fr) * 1984-04-11 1985-10-16 Asea Brown Boveri Aktiengesellschaft Dispositif d'extinction d'arc pour interrupteurs électriques
EP0158124A3 (en) * 1984-04-11 1988-03-09 Brown, Boveri & Cie Aktiengesellschaft Extinguishing device for electrical switches
CN103000466A (zh) * 2011-09-15 2013-03-27 西门子公司 断路器的电弧室组件及其断路器

Also Published As

Publication number Publication date
DE3030429A1 (de) 1982-09-30

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT

17P Request for examination filed

Effective date: 19820416

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840913

RIN1 Information on inventor provided before grant (corrected)

Inventor name: RUNTSCH, ERHARD, ING. GRAD.