EP1722384B1 - Appareil d'installation électrique avec une préchambre d'extinction, des tôles de déionisation et un dispositif d'extinction d'arc par limitation de courant - Google Patents

Appareil d'installation électrique avec une préchambre d'extinction, des tôles de déionisation et un dispositif d'extinction d'arc par limitation de courant Download PDF

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Publication number
EP1722384B1
EP1722384B1 EP06008056A EP06008056A EP1722384B1 EP 1722384 B1 EP1722384 B1 EP 1722384B1 EP 06008056 A EP06008056 A EP 06008056A EP 06008056 A EP06008056 A EP 06008056A EP 1722384 B1 EP1722384 B1 EP 1722384B1
Authority
EP
European Patent Office
Prior art keywords
arc
electrical installation
installation device
slot
area
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
EP06008056A
Other languages
German (de)
English (en)
Other versions
EP1722384A3 (fr
EP1722384A2 (fr
Inventor
Alexander Rab
Rainer Dipl.-Ing. Ludovici
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 AG
Original Assignee
ABB 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 AG filed Critical ABB AG
Publication of EP1722384A2 publication Critical patent/EP1722384A2/fr
Publication of EP1722384A3 publication Critical patent/EP1722384A3/fr
Application granted granted Critical
Publication of EP1722384B1 publication Critical patent/EP1722384B1/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
    • H01H9/34—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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H2009/348—Provisions for recirculation of arcing gasses to improve the arc extinguishing, e.g. move the arc quicker into the arcing chamber

Definitions

  • the invention relates to an electrical installation device with arc Vorschraum, Vorschplatten and current-limiting arc quenching device according to the preamble of claim 1.
  • the invention can be used for example in circuit breakers and motor protection switches.
  • Miniature circuit breakers and motor protection switches are used in the event of a fault to disconnect electrical lines that are loaded with high current overcurrents from the supply network.
  • a fixed and a movable contact piece are provided in an arc Vorschraum, which are connected to the respective terminals.
  • a switching arc which is deleted in a designated extinguishing device.
  • the drawn arc commutes from the opened contact pieces on arc guide rails, and then subdivided into an arc splitter stack (Deion quenching chamber). There, a high arc voltage is generated to limit the current, so that the arc goes out.
  • an arc extinguishing arrangement for an electrical switching device which comprises a quenching chamber (in which a switching action between a fixed and a movable contact piece is generated an arc) and a plurality of arc quenching arc splitter stack in which the arc is guided over guide rails.
  • the invention has for its object to provide an electrical installation device with arc Vorschraum, Vorhuntplatten and current-limiting arc quenching, the high dielectric strength is maintained even after repeated triggering with the emergence of an arc.
  • the achievable with the present invention consist in particular in that the proposed measures are simple and inexpensive to implement and ensure a higher dielectric strength with unchanged compact design of the switching device.
  • the two prechamber plates 8 mentioned above are formed from an insulating material (such as ceramic or plastic) and arranged on both broad sides of the arc prechamber space 7 such that a backflow channel is formed between the housing wall and the prechamber plate 8. Deflections redirect the gases flowing through these return flow channels back to the arc prechamber space 7.
  • the prechamber plates 8 are geometrically arranged such that a return flow behind these prechamber plates is made possible only in the expansion area of the arc, whereby the arc 13 is accelerated in the direction of the arc quenching device 12.
  • Fig. 2, 3rd and 4 three different embodiments of a Vorhuntplatte are shown in detail.
  • 3rd are each parallel to the arc guide rail 16, two outer slots 20, 22 and a central slot 21 introduced in an overlapping manner in the Vorhuntplatten 8, said at least one slot transverse to the imaginary connection between the arc guide rails 14, 16 extends.
  • the slots 20, 22 open directly in the edge regions of the Vorhuntplatten.
  • Fig. 3 is a narrow web 23 between the slot 20 and edge portion and a narrow web 24 formed between slot 22 and edge portion.
  • Fig. 4 only two slits 25, 26 provided in an overlapping manner in the prechamber plates 8 are provided.
  • edge-side webs can also be formed in this variant.
  • the edge-side web 23 and 24 facilitates the assembly, because it is a tilting of the pre-chamber plate 8 effectively prevented during the fully automatic assembly of the switching device. If a creepage distance should develop after repeated occurrence of an arc over this web 23 or 24, the web melts (provided that a plastic material for the Vorschplatten 8 is used), whereby an elongated slot 20 or 22 is formed.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Breakers (AREA)

Claims (3)

  1. Appareil d'installation électrique, notamment disjoncteur de puissance ou disjoncteur pour moteur, avec un boîtier avec des moyens de raccordement (2, 3) pour la connexion à des rails conducteurs et/ou à des lignes de raccordement sur au moins un côté frontal, avec au moins un contact de commutation avec un élément de contact de commutation fixe (4) et un élément de contact de commutation mobile (6), entre lesquels, dans le cas d'une déconnexion, un arc électrique (13) se produit dans une préchambre d'extinction d'arc (7), lequel arc électrique est introduit par le biais de rails conducteurs d'arc (14, 16) dans un dispositif d'extinction d'arc (12) limitant le courant, des tôles de préchambre (8) étant disposées dans la région de la préchambre d'extinction d'arc (7), lesquelles forment des canaux de reflux entre la paroi du boîtier et les tôles de préchambre (8) depuis le dispositif d'extinction d'arc (12) jusqu'à la préchambre d'extinction d'arc (7), caractérisé en ce qu'au moins une fente (21) est prévue dans les tôles de préchambre (8), laquelle fente s'étend transversalement à la connexion imaginaire entre les rails conducteurs d'arc (14, 16).
  2. Appareil d'installation électrique selon la revendication 1, caractérisé en ce que plusieurs fentes (20, 21, 22, 25, 26) sont disposées de manière à se chevaucher.
  3. Appareil d'installation électrique selon la revendication 1 ou 2, caractérisé en ce qu'une nervure (23, 24) est réalisée entre la fente (20, 22) et la région d'arête.
EP06008056A 2005-05-13 2006-04-19 Appareil d'installation électrique avec une préchambre d'extinction, des tôles de déionisation et un dispositif d'extinction d'arc par limitation de courant Expired - Lifetime EP1722384B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005022213A DE102005022213A1 (de) 2005-05-13 2005-05-13 Elektrisches Installationsgerät mit Lichtbogen-Vorkammerraum, Vorkammerplatten und strombegrenzender Lichtbogenlöscheinrichtung

Publications (3)

Publication Number Publication Date
EP1722384A2 EP1722384A2 (fr) 2006-11-15
EP1722384A3 EP1722384A3 (fr) 2007-06-27
EP1722384B1 true EP1722384B1 (fr) 2010-10-27

Family

ID=36809229

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06008056A Expired - Lifetime EP1722384B1 (fr) 2005-05-13 2006-04-19 Appareil d'installation électrique avec une préchambre d'extinction, des tôles de déionisation et un dispositif d'extinction d'arc par limitation de courant

Country Status (3)

Country Link
EP (1) EP1722384B1 (fr)
AT (1) ATE486356T1 (fr)
DE (2) DE102005022213A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007001802B4 (de) * 2006-12-22 2010-02-25 Abb Ag Elektrisches Schaltgerät
DE102007032841A1 (de) 2007-07-12 2009-01-15 Abb Ag Installationsschaltgerät mit Isolierstoffgehäuse
DE102014119474A1 (de) 2014-12-22 2016-06-23 Eaton Electrical Ip Gmbh & Co. Kg Löschblechanordnung für ein Schaltgerät
FR3059460B1 (fr) * 2016-11-29 2019-01-25 Hager-Electro Sas Chambre de detente d'un disjoncteur differentiel et disjoncteur ainsi equipe

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3621690A1 (de) * 1986-06-27 1988-01-14 Bbc Brown Boveri & Cie Loescheinrichtung fuer elektrische schalter
DE3824025C2 (de) * 1988-07-15 1994-02-17 Asea Brown Boveri Niederspannungsschaltgerät
JPH04255623A (ja) * 1991-02-07 1992-09-10 Fuji Electric Co Ltd 回路遮断器
AT410725B (de) * 1993-11-02 2003-07-25 Felten & Guilleaume Ag Oester Selbstschalter
DE10242310A1 (de) * 2001-11-16 2003-07-10 Abb Patent Gmbh Lichtbogenlöschanordnung für ein elektrisches Schaltgerät
CZ20041197A3 (cs) * 2004-12-08 2006-07-12 Hess Trading Sr, Spol. S R.O. Zhásecí komora jistice

Also Published As

Publication number Publication date
EP1722384A3 (fr) 2007-06-27
DE102005022213A1 (de) 2006-11-16
ATE486356T1 (de) 2010-11-15
EP1722384A2 (fr) 2006-11-15
DE502006008162D1 (de) 2010-12-09

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