EP0183145A2 - Appareil de commutation électrique, notamment disjoncteur de puissance et de protection - Google Patents

Appareil de commutation électrique, notamment disjoncteur de puissance et de protection Download PDF

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Publication number
EP0183145A2
EP0183145A2 EP85114538A EP85114538A EP0183145A2 EP 0183145 A2 EP0183145 A2 EP 0183145A2 EP 85114538 A EP85114538 A EP 85114538A EP 85114538 A EP85114538 A EP 85114538A EP 0183145 A2 EP0183145 A2 EP 0183145A2
Authority
EP
European Patent Office
Prior art keywords
wall
arc
plate
switching device
housing
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.)
Granted
Application number
EP85114538A
Other languages
German (de)
English (en)
Other versions
EP0183145B1 (fr
EP0183145A3 (en
Inventor
Klaus Dipl.-Ing. Greefe
Richard Dipl.-Ing. Kommert
Erwin Ing. Grad. Muders
Rudolf Sellner
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.)
ASEA BROWN BOVERI AKTIENGESELLSCHAFT
Original Assignee
Brown Boveri und Cie AG Germany
Asea Brown Boveri 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, Asea Brown Boveri AG Germany, BBC Brown Boveri AG Germany filed Critical Brown Boveri und Cie AG Germany
Publication of EP0183145A2 publication Critical patent/EP0183145A2/fr
Publication of EP0183145A3 publication Critical patent/EP0183145A3/de
Application granted granted Critical
Publication of EP0183145B1 publication Critical patent/EP0183145B1/fr
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
    • H01H9/34—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 switching device, in particular a circuit breaker, according to the preamble of claim 1.
  • the arc quenching chamber is delimited on both sides by wall plates made of insulating material, which are at a certain distance from the neighboring housing walls (see DE-AS 23 49 187).
  • wall plates made of insulating material, which are at a certain distance from the neighboring housing walls (see DE-AS 23 49 187).
  • a switching device of the type mentioned has become known from DE-AS 11 85 269.
  • This known switching device is one with a double contact point with insulating plates which are at a distance from the housing side walls and also at a distance from the fixed bwz. movable contact pieces are arranged.
  • the object of the invention is to provide an electrical switching device of the type mentioned, the arc extinguishing characteristics of which are considerably improved compared to the known arrangement, the manufacture and manufacture being additionally simplified insofar as only a single contact point is to be present.
  • a flow channel is located only on one side of the arc quenching chamber, namely directly in front of the arc quenching plate pack, because it has been found that only a single channel is sufficient to form a sufficient flow, which simplifies production.
  • the special assignment of the wall protrusion to the arc quenching plate package also prevents backflow to the side of the contact point and the entire gas to be used for the arc quenching is led directly to the contact point without large gaps.
  • US Pat. No. 2,769,066 shows that the arc-quenching plates are used in plates, a channel being provided on both sides of the plates outside the plates.
  • this channel is divided into individual channel areas by the extinguishing plates and the purpose of these channels is not to achieve a backflow of extinguishing gas, but rather to cool the extinguishing gases in these two channels.
  • a further improvement is brought about by the introduction of the grooves according to the characterizing part of claim 3 insofar as the gas flow improves overall. is practically sucked in fresh air through the grooves.
  • an iron plate is inserted into the wall plate according to claim 4, which serves to improve the flow of the arc from the contact pieces.
  • DE-AS 23 49 187 already mentioned at the outset to provide rags on both sides of the quenching chamber, which are used to improve the arc running.
  • the known arrangement is not a quenching chamber with arc-quenching plates, but rather one with a ceramic screen for quenching the arc, and the two plates also only serve to essentially move the arc in the direction of the movement opening of the be to extend the movable contact piece. This has the consequence that the height of the arc quenching chamber is of essential importance in the known arrangement. Embedding so-called blow plates has become known per se from DE-AS 11 04 019.
  • the device according to the invention is preferably used in an electrical circuit breaker in which a movable and a fixed contact piece are arranged in a current path and are opened by means of a thermal release in the form of a thermobimetal in the event of an overcurrent and by means of a magnetic release in the event of a short-circuit current.
  • a thermal release in the form of a thermobimetal in the event of an overcurrent and by means of a magnetic release in the event of a short-circuit current.
  • the individual components of the switch are located in a housing which is formed from two housing elements located opposite one another, of which the two housing walls 10 and 11 can be seen in FIGS. 1 and 2.
  • the device for interrupting a current path is formed from a movable contact piece 12 and a fixed contact piece 13, which together form a contact point 14.
  • the movable contact piece 12 is formed as a horn on a contact lever 15 and the fixed contact piece 13 is formed by a U-shaped arrangement with two legs 16 and 17.
  • the contact point 14 there is an arc extinguisher plate package 18 with individual extinguishing plates 19.
  • the arc extinguishing plate assembly 18 can also be replaced by a so-called cooling plate arrangement if the switch is to be used as a so-called zero point extinguisher.
  • a projection 20 which extends as far as the contact point and limits the arc-quenching plate packet 18 towards the front, that is to say counter to the direction of arc travel.
  • Only a transverse wall 21 is formed on the opposite wall and forms a limiting web in the area of the fixed contact piece 13.
  • a free space 22 is formed between the limiting web 21 and the front region of the arc-quenching plate packet 18, into which a wall plate 23 (see FIGS. 4 and 5) is inserted, the one Iron plate 24 picks up.
  • the wall plate 23 sits at a distance from the housing wall 11, so that a flow channel 25 is formed between the wall plate 23 and the housing wall 11, the arc gases allowing a flow in the direction of arrow P against the running direction of the arc PL into the arc quenching plate packet 18.
  • a recess 26 is provided on the fixed contact piece in the region of the wall plate and projects on both sides, thereby ensuring the distance between the wall plate 23 and the fixed contact piece.
  • the projection 20 there are grooves 27, the task of which is to increase the creepage distance in the region of the wall.
  • the housing wall 10 forms a housing base 30, to which a projection 31 connects, the width of which corresponds to the width of the wall plate.
  • the wall plate 23 is inserted into this projection 31.
  • the housing wall 11 helps to hold the wall plate 23 by forming a sack-like depression together with the projection 31 on the housing wall 10, in which the wall plate 23 is guided and fixed.
  • a wall protrusion 11a and 11b is provided above and below the channel, which limit the channel 22 upwards and downwards.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
EP85114538A 1984-11-27 1985-11-15 Appareil de commutation électrique, notamment disjoncteur de puissance et de protection Expired EP0183145B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843443122 DE3443122A1 (de) 1984-11-27 1984-11-27 Vorrichtung zur unterbrechung von stromkreisen
DE3443122 1984-11-27

Publications (3)

Publication Number Publication Date
EP0183145A2 true EP0183145A2 (fr) 1986-06-04
EP0183145A3 EP0183145A3 (en) 1987-05-27
EP0183145B1 EP0183145B1 (fr) 1989-09-13

Family

ID=6251213

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85114538A Expired EP0183145B1 (fr) 1984-11-27 1985-11-15 Appareil de commutation électrique, notamment disjoncteur de puissance et de protection

Country Status (2)

Country Link
EP (1) EP0183145B1 (fr)
DE (2) DE3443122A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995012888A1 (fr) * 1993-11-02 1995-05-11 Felten & Guilleaume Austria Ag Commutateur
EP0713232A1 (fr) * 1994-11-18 1996-05-22 Schneider Electric Sa Chambre de coupure d'un disjoncteur électrique
EP0817224A1 (fr) * 1996-07-05 1998-01-07 Schneider Electric Sa Dispositif de coupure pour un disjoncteur électrique à forts calibres
EP1152440A4 (fr) * 1999-12-02 2004-04-21 Mitsubishi Electric Corp Disjoncteur
EP1876617A1 (fr) * 2006-07-06 2008-01-09 ABB PATENT GmbH Interrupteur électrique d'installation avec préchambre d'extinction d'arc, une tôle de conduction d'arc et un dispositif d'extinction d'arc à limitation de courant

Families Citing this family (3)

* 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
DE102017204942B4 (de) * 2017-03-23 2022-01-20 Siemens Aktiengesellschaft Elektromechanisches Schutzschaltgerät
GB2631418A (en) * 2023-06-29 2025-01-08 Eaton Intelligent Power Ltd Switchgear plate

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2769066A (en) * 1953-02-02 1956-10-30 Westinghouse Electric Corp Circuit interrupters
DE1104019B (de) * 1959-09-11 1961-04-06 Continental Elektro Ind Ag Lichtbogenloeschkammer fuer elektrische Leistungsschalter
DE1168529B (de) * 1961-06-26 1964-04-23 Licentia Gmbh Elektrisches Schaltgeraet mit Einrichtung zur Lichtbogenloeschung
DE1185269C2 (de) * 1961-08-21 1975-05-15 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Einpoliger selbstschalter in schmalbauform
DE1196750B (de) * 1962-05-21 1965-07-15 Licentia Gmbh Elektrisches Schaltgeraet
DE1238538B (de) * 1963-07-19 1967-04-13 Licentia Gmbh Loeschblechanordnung fuer Schaltgeraete, insbesondere fuer Installationsselbstschalter
DE1908265U (de) * 1963-11-25 1965-01-14 Continental Elektro Ind Ag Lichtbogenloeschkammer fuer elektrische schaltgeraete.
US3307004A (en) * 1964-08-06 1967-02-28 Westinghouse Electric Corp Arc extinguishing structures for circuit interrupters
US3422235A (en) * 1966-01-28 1969-01-14 Heinemann Electric Co Arcing grid case support means
CH481481A (it) * 1968-04-13 1969-11-15 Bassani Spa Interruttore automatico con camera deionizzante
DE7607341U1 (de) * 1976-03-10 1976-08-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen Leitungsschutzschalter
DE2716619C2 (de) * 1977-04-15 1979-05-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Strombegrenzender Leitungsschutzschalter mit Maßnahmen zur Erhöhung der Laufgeschwindigkeit des Schaltlichtbogeits
JPS56162436A (en) * 1980-05-20 1981-12-14 Matsushita Electric Works Ltd Circuit breaker
DE3225736A1 (de) * 1982-07-09 1984-01-12 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer leitungsschutzschalter
DE3311052A1 (de) * 1983-03-25 1984-09-27 Siemens AG, 1000 Berlin und 8000 München Selbstschalter, insbesondere leitungsschutzschalter

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995012888A1 (fr) * 1993-11-02 1995-05-11 Felten & Guilleaume Austria Ag Commutateur
AU676934B2 (en) * 1993-11-02 1997-03-27 Felten & Guilleaume Austria Ag Switch
EP0713232A1 (fr) * 1994-11-18 1996-05-22 Schneider Electric Sa Chambre de coupure d'un disjoncteur électrique
FR2727240A1 (fr) * 1994-11-18 1996-05-24 Schneider Electric Sa Chambre de coupure d'un disjoncteur electrique
EP0817224A1 (fr) * 1996-07-05 1998-01-07 Schneider Electric Sa Dispositif de coupure pour un disjoncteur électrique à forts calibres
FR2750795A1 (fr) * 1996-07-05 1998-01-09 Schneider Electric Sa Dispositif de coupure pour un disjoncteur electrique a forts calibres
EP1152440A4 (fr) * 1999-12-02 2004-04-21 Mitsubishi Electric Corp Disjoncteur
EP1876617A1 (fr) * 2006-07-06 2008-01-09 ABB PATENT GmbH Interrupteur électrique d'installation avec préchambre d'extinction d'arc, une tôle de conduction d'arc et un dispositif d'extinction d'arc à limitation de courant

Also Published As

Publication number Publication date
EP0183145B1 (fr) 1989-09-13
DE3443122A1 (de) 1986-05-28
DE3573041D1 (en) 1989-10-19
EP0183145A3 (en) 1987-05-27

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