EP0269530B1 - Lichtbogenkammer für einen elektrischen Schalter - Google Patents

Lichtbogenkammer für einen elektrischen Schalter Download PDF

Info

Publication number
EP0269530B1
EP0269530B1 EP19870420287 EP87420287A EP0269530B1 EP 0269530 B1 EP0269530 B1 EP 0269530B1 EP 19870420287 EP19870420287 EP 19870420287 EP 87420287 A EP87420287 A EP 87420287A EP 0269530 B1 EP0269530 B1 EP 0269530B1
Authority
EP
European Patent Office
Prior art keywords
wall
chamber
openings
extinguishing chamber
arc
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
EP19870420287
Other languages
English (en)
French (fr)
Other versions
EP0269530A1 (de
Inventor
Alain Menier
Daniel Lattard
Gérard Cambon
Louis Marcone
Philippe Vachez
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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 Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0269530A1 publication Critical patent/EP0269530A1/de
Application granted granted Critical
Publication of EP0269530B1 publication Critical patent/EP0269530B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01H9/342—Venting arrangements for arc chutes

Definitions

  • the invention relates to the breaking chamber of an electrical circuit breaker with a molded housing comprising a fixed contact and a movable contact which, when they separate, form an arc between them, a wall comprising openings dividing the chamber into two parts.
  • circuit breakers in particular miniature circuit breakers, there is normally provided in the circuit breaker housing, at the outlet of the breaking chamber, an orifice for exhausting the gases produced during the breaking.
  • porous screens in the exhaust orifice, for example in the document FR-A-2 508 230 by the applicant, or metallic grids with fine meshes intended to filter, cool and deionize the gas.
  • a perforated insulating plate is arranged between the exhaust port of the gases and the cooling and deionization sheets so as to avoid re-striking of the arc.
  • the object of the invention is to eliminate the external manifestations due to the escape of the breaking gases and to allow the production of a chamber with high breaking capacity, without increasing the volume thereof, while maintaining the pressure at inside the circuit breaker at acceptable values.
  • the breaking chamber according to the invention is characterized in that that the total surface of the openings of said wall is between 1 and 8% of the total surface of the wall, the first part of the breaking chamber constituting the arc-forming chamber and the second part constituting a quasi-sealed cooling chamber gases, without exhaust port to the outside, the volume of which is between 20 and 60% of the total volume of the breaking chamber.
  • a miniature circuit breaker pole comprises a housing 10 made of molded insulating material, having on its front face 12 an operating handle 14 and on the two narrow lateral faces of the connection terminals 16 and 18.
  • a movable contact 20 and a fixed contact 22 At the inside the housing are housed a movable contact 20 and a fixed contact 22, electrically connected by a conductor 24 to the terminal 16.
  • the movable contact is controlled by a control mechanism, designated by the general reference 26, connecting the lever 14 to the contact mobile 20.
  • a thermal trip device formed by a bimetallic strip 28 and an electromagnetic trip device 30, capable of causing, in the event of an overload or short-circuit, an automatic opening of the contacts 20, 22.
  • the lower part of the housing 10 contains a breaking chamber.
  • connection conductor 24 extends beyond the fixed contact 22 to form an electrode or arcing horn 32.
  • the upper side of the breaking chamber is delimited by an electrode or arc horn 34 electrically connected to the connection terminal 18.
  • the arc horns 32, 34 are arranged so as to pick up a drawn arc between the contacts 20 , 22, when they separation.
  • a circuit breaker described in detail in particular in French Patent No. 2,344,949 of the applicant, is well known to specialists and it is unnecessary to further describe its layout or its operation.
  • a quasi-sealed wall 36 divides the breaking chamber into two parts. Only the first part 38 where the arc is formed remains accessible to the arc.
  • the second part 40 of the cut-off chamber which does not have a gas exhaust port to the outside, constitutes a cooling chamber for the gases.
  • the wall 36 has openings 42 whose total surface is between 1 and 8%, preferably 1 to 5% of the total surface of the wall. Optimal operation is obtained with openings whose surface constitutes 2 to 3% of the total surface of the wall.
  • a wall 36 of 200 mm 2 has openings of 4 mm 2.
  • these openings can be made in the form of one or more holes 42, as shown in FIG. 2 (4 holes of 1 mm in diameter) or one or more slots.
  • the breaking chamber is thus divided into two zones, an arc zone 38, in which the gases are at high temperature, but where their density remains low, and a cooling zone or expansion chamber 40, in which occurs a significant cooling of gases and where their density increases.
  • the wall 36 is located in the middle zone of the breaking chamber, the free end of the arcing horn 32 ending in the immediate vicinity of the wall. It may be advantageous to extend the bow horn 32 to the wall, the latter then serving as more mechanical support for this bow horn. In the particular embodiment shown in FIG. 2, the wall 36 is placed more at the bottom of the breaking chamber.
  • the cooling zone constitutes approximately 20 to 60% of the total volume of the breaking chamber.
  • the gain in pressure which is appreciably in the ratio of volumes, is less but nevertheless appreciable (approximately 20%) and sufficient to allow removal or shut off any gas exhaust port to the outside. It has moreover been observed that the presence of the wall 36 has no negative influence on the breaking capacity of the circuit breaker.
  • the wall 36 according to the invention allows, for the same volume of the breaking chamber to suppress the external manifestations of the device, no gas exhaust port to the outside being no longer necessary, while avoiding overpressures.
  • the wall 36 made of insulating material, can be molded with the housing or be constituted by an insert, fixed to the housing by any suitable means.

Landscapes

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

Claims (5)

  1. Lichtbogenlöschkammer (38, 40) eines Leistungsschalters mit Isolierstoffgehäuse, einem feststehenden Kontakt (22) und einem beweglichen Kontakt (20), zwischen denen im Augenblick der Trennung ein Lichtbogen entsteht, und einer die Löschkammer in zwei Bereiche (38, 40) teilende und mit Öffnungen (42) versehene Trennwand (36), dadurch gekennzeichnet, daß die Öffnungen (42) der genannten Trennwand eine Fläche von 1 bis 8 % der Gesamtfläche der Trennwand einnehmen, wobei der erste Bereich (38) der Löschkammer die Schaltkammer bildet, in der sich der Lichtbogen ausbildet, und der zweite Bereich (40) eine praktisch dichte und keine nach außen führenden Öffnungen aufweisende Gasabkühlkammer darstellt, deren Volumen 20 bis 60 % des Gesamtvolumens der Löschkammer einnimmt.
  2. Lichtbogenlöschkammer nach Anspruch 1, dadurch gekennzeichnet, daß die genannten Öffnungen (42) eine Fläche von 1 bis 5% der Gesamtfläche der ,genannten Trennwand (36) einnehmen.
  3. Lichtbogenlöschkammer nach Anspruch 2, dadurch gekennzeichnet, daß die genannten Öffnungen (42) eine Fläche von 2 bis 3% der Gesamtfläche der genannten Trennwand (36) einnehmen.
  4. Lichtbogenlöschkammer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die genannten Öffnungen (42) durch eine oder mehrere Bohrungen gebildet werden.
  5. Lichtbogenlöschkammer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die genannten Öffnungen durch einen oder mehrere Schlitze gebildet werden.
EP19870420287 1986-11-06 1987-10-23 Lichtbogenkammer für einen elektrischen Schalter Expired - Lifetime EP0269530B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8615621A FR2606547A1 (fr) 1986-11-06 1986-11-06 Chambre de coupure d'un disjoncteur electrique
FR8615621 1986-11-06

Publications (2)

Publication Number Publication Date
EP0269530A1 EP0269530A1 (de) 1988-06-01
EP0269530B1 true EP0269530B1 (de) 1992-09-09

Family

ID=9340675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870420287 Expired - Lifetime EP0269530B1 (de) 1986-11-06 1987-10-23 Lichtbogenkammer für einen elektrischen Schalter

Country Status (3)

Country Link
EP (1) EP0269530B1 (de)
DE (1) DE3781646T2 (de)
FR (1) FR2606547A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2285889A (en) * 1994-01-21 1995-07-26 Square D Co Circuit breaker

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL56781C (de) * 1939-08-04
FR1194613A (fr) * 1957-08-17 1959-11-10 Stotz Kontakt Gmbh Disjoncteur de grande puissance comportant au moins un canal d'admission des gaz en communication avec la chambre de soufflage de l'arc
BE638963A (de) * 1962-12-14
DE1690463B1 (de) * 1968-02-03 1971-10-07 Elektro App Werke Berlin Trept Lichtbogenloescheinrichtung fuer elektrische niederspannungs leistungsschalter
DE7020036U (de) * 1970-05-29 1970-08-13 Bbc Brown Boveri & Cie Installations-selbstschalter mit loeschblech-funkenkammer.
JPS5644458U (de) * 1979-09-14 1981-04-22
FR2490002A1 (fr) * 1980-09-09 1982-03-12 Merlin Gerin Disjoncteur miniature a contacts d'arc

Also Published As

Publication number Publication date
EP0269530A1 (de) 1988-06-01
DE3781646D1 (de) 1992-10-15
DE3781646T2 (de) 1993-04-08
FR2606547A1 (fr) 1988-05-13

Similar Documents

Publication Publication Date Title
EP2061051B1 (de) Lichtbogenkammer und Schutzschalter, der mit einer solchen Lichtbogenkammer ausgestattet ist
EP3435394B1 (de) Filtervorrichtung von schaltgas, und abschaltgerät eines elektrischen stroms, das eine solche filtervorrichtung umfasst
FR2491676A1 (fr) Relais electromagnetique
FR2807565A1 (fr) Pole pour un disjoncteur electrique limiteur de basse tension de puissance et disjoncteur muni d'un tel pole
FR2655770A1 (fr) Disjoncteur multipolaire a filtre des gaz commun aux differents poles.
EP0206882B1 (de) Niederspannungsschalter mit Unterbrechung
FR3065316B1 (fr) Dispositif de filtrage de gaz de coupure pour un appareil de coupure d'un courant electrique et appareil de coupure d'un courant electrique comportant ce dispositif de filtrage
EP0591039B1 (de) Hochspannung selbst-Blaslastscharter mit Schnittkammer mit reduzierter Gaskompression
EP0022708B1 (de) Lichtbogenlöschkammer für mehrpoligen Niederspannungs-Leistungsschalter mit gegossenem Gehäuse
EP0269530B1 (de) Lichtbogenkammer für einen elektrischen Schalter
EP1535378B1 (de) Schutzvorrichtung in einem elektrischen verteilungsnetz
EP0148058B1 (de) Miniaturlastschalter mit dielektrischen Eigenschaften
EP3035363B1 (de) Lichtbogen-schaltkammer für einen leistungsschalter, und leistungsschalter, der eine solche kammer umfasst
EP0713232B1 (de) Schaltkammer eines Lastschalters
FR2479553A1 (fr) Interrupteur a arc tournant et a expansion thermique du gaz de soufflage
FR2663458A1 (fr) Disjoncteur electrique miniature a echappement de gaz de coupure.
FR2613872A1 (fr) Disjoncteur electrique miniature a boitier moule
CA2083295A1 (fr) Disjoncteur hybride pour la coupure des courants a grande composante continue
FR2711012A1 (fr) Disjoncteur à chambre d'extinction d'arc perfectionnée.
FR2511187A1 (fr) Interrupteur electrique comprenant des toles d'extinction en un materiau conducteur de l'electricite et pouvant etre aimantees, dans lesquelles la face frontale presente au moins un evidement
EP0398116B1 (de) Mittelspannungsschalter mit Selbstbeblasung
FR2508230A1 (fr) Ecran poreux d'echappement pour chambre d'extinction d'arc
JPH0831296A (ja) 回路遮断器
FR2710452A1 (fr) Interrupteur haute tension à arc tournant.
EP0470013A1 (de) Lichtbogenkammer mit gesinterten Trennblechen

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

Kind code of ref document: A1

Designated state(s): BE CH DE ES GB IT LI SE

17P Request for examination filed

Effective date: 19881024

17Q First examination report despatched

Effective date: 19910527

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE ES GB IT LI SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19920909

Ref country code: SE

Effective date: 19920909

Ref country code: GB

Effective date: 19920909

REF Corresponds to:

Ref document number: 3781646

Country of ref document: DE

Date of ref document: 19921015

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19921031

Ref country code: LI

Effective date: 19921031

Ref country code: CH

Effective date: 19921031

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19921110

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19921220

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19920909

BERE Be: lapsed

Owner name: MERLIN GERIN

Effective date: 19921031

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19940701