EP0028012A1 - Disjoncteur basse tension - Google Patents

Disjoncteur basse tension Download PDF

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Publication number
EP0028012A1
EP0028012A1 EP80106488A EP80106488A EP0028012A1 EP 0028012 A1 EP0028012 A1 EP 0028012A1 EP 80106488 A EP80106488 A EP 80106488A EP 80106488 A EP80106488 A EP 80106488A EP 0028012 A1 EP0028012 A1 EP 0028012A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
arc
breaker according
plate
arc extinguishing
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Withdrawn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
EP80106488A
Other languages
German (de)
English (en)
Inventor
Keiichi Dipl.-Ing. Harigai
Kiyoshi Dipl.-Ing. Kandatsu
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Publication of EP0028012A1 publication Critical patent/EP0028012A1/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Withdrawn legal-status Critical Current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
    • H01H9/342—Venting arrangements for arc chutes

Definitions

  • the invention relates to a low-voltage circuit breaker with a fixed and movable contact piece and an arc quenching chamber with arc quenching plates with V-shaped cutouts and recesses opposite these.
  • offset edge recesses are provided in the arc quenching plates at the upper end of the plates in order to allow the gases to flow away. Since the recesses are only partially delimited by the metallic plates, effective arc cooling and deionization cannot occur here either. The cooling takes place here by a relatively large volume of the arc extinguishing device.
  • the object of the invention is to provide an arc extinguishing device of the above-mentioned type which requires little space and thereby achieves effective cooling and deionization of the arc gases. This is achieved in a simple manner in that the recesses consist of a large number of small holes. The space requirement is further reduced if the arc extinguishing plates extend with their longitudinal direction parallel to the contact opening direction, with the V facing the contact point. By deflecting the arc, further cooling of the arc is achieved at the same time. For this purpose, it is also advantageous if an arcing horn connected to the fixed contact piece outside of the most distant arc extinguishing plate ends in a plane parallel to the arc extinguishing plates.
  • Additional cooling and deionization of the arc gases is achieved if a sieve plate, which delimits the outlet duct, is connected downstream of the arc extinguishing plate which is furthest away from the contact point.
  • the sieve plate is only in the area of the holes.
  • the space required for the arc quenching device is further reduced if the arc running horn ends between the last arc quenching plate and the screen plate.
  • a reduction in the gas emission and a further cooling is achieved if the contact point is flanked transversely to the direction of the arc, inserted into the housing of the switch, and there are partition walls made of thermosetting resin.
  • the circuit breaker should preferably be made in a compact design so that it can be used in closed switchgear.
  • the arc quenching device should take up as little space as possible.
  • the switch 1 has a housing 2 and a cover 3.
  • a fixed contact piece 4 which is bent in a U-shape, has at one end a fixed contact pad 5 and an arcing horn 6. It is connected to the housing 2 via screws, not shown, which extend through an iron core 7, which serves as a magnetic shield, and an insulating plate 8.
  • a movable contact piece 9 has a contact pad 10 which is arranged opposite the fixed contact pad 5. The movable contact piece and the contact pad are carried by a carrier 11, which starts from a switching mechanism, not shown.
  • a support plate 12 is connected by a rivet 13 to the bent end of the arcing guide 6 and is thus connected to the housing 2 via the support plate 12. With 14 a sieve plate is designated, which is fitted into the cover 3 and is used to discharge the arc gases. It forms the boundary on the power supply side for the arc quenching chamber.
  • a large number of metal arc extinguishing plates 15 are provided with V-shaped recesses 15a, as shown in FIG. 3, which are also referred to as deionization grids. In the area facing away from the recess 15a, a large number of small holes are provided, which serve as gas cooling means 15b.
  • the arc extinguishing plates 15 extend in the vertical direction in essentially in the direction of the switching movement of the movable contact piece 9, the V-shaped recesses 15a pointing in the direction of the movable contact part 9.
  • the arc extinguishing plates 15 are in vertically extending cavities 2a in the housing 2, which is shown in side elevation, partly in section, in FIG. 4 and inserted in a top view in FIG. 5. Furthermore, the plates 15 are secured in cavities 3a of the cover 3 against displacement, as shown in FIG. 6.
  • a septum 16 made of temperature resistant insulating material such as thermosetting resin e.g. Melamine that is produced is shown in FIG. It has a projection 16a which engages in the vertical cavity 2b in the housing 2.
  • the wall used is to reduce the gas output during the switching process and cool the gas.
  • the septum 16 forms a boundary in the area of arcing in the arc quenching chamber.
  • An insulating plate 17 with a gas discharge opening is fitted together with the above-mentioned support plate 12 in a vertical cavity 2c of the housing 2.
  • the sieve plate 14 is held in a vertical cavity 3b of the cover 3.
  • the object of the present invention allows the gas produced when the device is switched off to be cooled and cooled through openings 15b provided in the arc extinguishing plates 15 and through the sieve plate 14, so that the gas can exit the circuit breaker with sufficient cooling and deionization.
  • the arc quenching device requires less space for the Arc run and is compact in size. With the arrangement of the arc quenching plates substantially parallel to the direction of the switching movement of the movable contacts, the arc quenching chamber has an upper space which can be effectively used as a gas coolant, and the size of the arc quenching device can be further reduced.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
EP80106488A 1979-10-27 1980-10-23 Disjoncteur basse tension Withdrawn EP0028012A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP13903379A JPS5663736A (en) 1979-10-27 1979-10-27 Device for extinguishing circuit breaker
JP139033/79 1979-10-27

Publications (1)

Publication Number Publication Date
EP0028012A1 true EP0028012A1 (fr) 1981-05-06

Family

ID=15235887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106488A Withdrawn EP0028012A1 (fr) 1979-10-27 1980-10-23 Disjoncteur basse tension

Country Status (3)

Country Link
EP (1) EP0028012A1 (fr)
JP (1) JPS5663736A (fr)
DE (1) DE8028317U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0123090A3 (en) * 1983-03-25 1985-05-29 Siemens Aktiengesellschaft Circuit breaker, especially an automatic cut-off switch
EP0673048A1 (fr) * 1994-03-19 1995-09-20 AEG Sachsenwerk GmbH Dispositif d'extinction d'arc à tôles d'extinction
EP4336531A1 (fr) * 2022-09-06 2024-03-13 ABB S.p.A. Pôle de commutateur basse tension avec une chambre de rupture d'arc comprenant un couvercle pour les gaz chauds ayant une plaque et un trou traversant

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2793182B2 (ja) * 1987-03-24 1998-09-03 株式会社東芝 回路しや断器
EP2685020B1 (fr) 2011-03-10 2016-03-09 WPC Corporation Coffrage à demeure pour décoration, et structure de surface de mur de structure en béton
CN105374648B (zh) * 2015-11-12 2017-07-28 天津市百利电气有限公司 低压断路器消游离灭弧装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB615025A (en) * 1946-08-16 1948-12-31 Reyrolle A & Co Ltd Improvements relating to air-break circuit-breakers having arc chutes
US2590543A (en) * 1947-07-05 1952-03-25 Westinghouse Electric Corp Spaced plate circuit interrupter
DE1027280B (de) * 1953-02-27 1958-04-03 Allis Chalmers Mfg Co Stromunterbrecher mit einem Schacht zum Aufnehmen und Loeschen des Schaltlichtbogens
GB1008725A (en) * 1961-08-21 1965-11-03 Licentia Gmbh An electric circuit breaker with single or double interruption
DE1232644B (de) * 1961-03-10 1967-01-19 Licentia Gmbh Schaltgeraet mit einer eine Loeschblechanordnung enthaltenden Lichtbogenkammer
US3441697A (en) * 1966-04-05 1969-04-29 Federal Pacific Electric Co Circuit interrupters with improved arc chutes
FR2041316A5 (fr) * 1969-04-18 1971-01-29 Kesl Karel
DE1690463B1 (de) * 1968-02-03 1971-10-07 Elektro App Werke Berlin Trept Lichtbogenloescheinrichtung fuer elektrische niederspannungs leistungsschalter

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB615025A (en) * 1946-08-16 1948-12-31 Reyrolle A & Co Ltd Improvements relating to air-break circuit-breakers having arc chutes
US2590543A (en) * 1947-07-05 1952-03-25 Westinghouse Electric Corp Spaced plate circuit interrupter
DE1027280B (de) * 1953-02-27 1958-04-03 Allis Chalmers Mfg Co Stromunterbrecher mit einem Schacht zum Aufnehmen und Loeschen des Schaltlichtbogens
DE1232644B (de) * 1961-03-10 1967-01-19 Licentia Gmbh Schaltgeraet mit einer eine Loeschblechanordnung enthaltenden Lichtbogenkammer
GB1008725A (en) * 1961-08-21 1965-11-03 Licentia Gmbh An electric circuit breaker with single or double interruption
US3441697A (en) * 1966-04-05 1969-04-29 Federal Pacific Electric Co Circuit interrupters with improved arc chutes
DE1690463B1 (de) * 1968-02-03 1971-10-07 Elektro App Werke Berlin Trept Lichtbogenloescheinrichtung fuer elektrische niederspannungs leistungsschalter
FR2041316A5 (fr) * 1969-04-18 1971-01-29 Kesl Karel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0123090A3 (en) * 1983-03-25 1985-05-29 Siemens Aktiengesellschaft Circuit breaker, especially an automatic cut-off switch
EP0673048A1 (fr) * 1994-03-19 1995-09-20 AEG Sachsenwerk GmbH Dispositif d'extinction d'arc à tôles d'extinction
EP4336531A1 (fr) * 2022-09-06 2024-03-13 ABB S.p.A. Pôle de commutateur basse tension avec une chambre de rupture d'arc comprenant un couvercle pour les gaz chauds ayant une plaque et un trou traversant
US12444557B2 (en) 2022-09-06 2025-10-14 Abb S.P.A. Low voltage switch pole

Also Published As

Publication number Publication date
DE8028317U1 (de) 1981-04-16
JPS5663736A (en) 1981-05-30

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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): DE FR IT

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

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18W Application withdrawn

Withdrawal date: 19810924

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KANDATSU, KIYOSHI, DIPL.-ING.

Inventor name: HARIGAI, KEIICHI, DIPL.-ING.