EP0138174A2 - Dispositif d'extinction pour un interrupteur automatique - Google Patents

Dispositif d'extinction pour un interrupteur automatique Download PDF

Info

Publication number
EP0138174A2
EP0138174A2 EP84112003A EP84112003A EP0138174A2 EP 0138174 A2 EP0138174 A2 EP 0138174A2 EP 84112003 A EP84112003 A EP 84112003A EP 84112003 A EP84112003 A EP 84112003A EP 0138174 A2 EP0138174 A2 EP 0138174A2
Authority
EP
European Patent Office
Prior art keywords
extinguishing
plates
arc
insulating material
extinguishing device
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
EP84112003A
Other languages
German (de)
English (en)
Other versions
EP0138174B1 (fr
EP0138174A3 (en
Inventor
Klaus Ing. Grad. Liesenjohann
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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
Priority claimed from DE19838329809 external-priority patent/DE8329809U1/de
Priority claimed from DE19833337562 external-priority patent/DE3337562A1/de
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0138174A2 publication Critical patent/EP0138174A2/fr
Publication of EP0138174A3 publication Critical patent/EP0138174A3/de
Application granted granted Critical
Publication of EP0138174B1 publication Critical patent/EP0138174B1/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
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets

Definitions

  • the invention relates to an extinguishing device for a circuit breaker, in particular an all-current circuit breaker, with a stack of several extinguishing plates which are placed next to one another at a distance and which are provided on the side facing a contact arrangement with a funnel-shaped incision with gradations towards the outer edges are, and with two on both sides of this incision transversely in front of the front edges of the quenching plates in the area of the contacts, the switching arc flanking insulating material plates, at least one of which covers a blowout magnet and the upper side of the insulating material plate facing the arc chamber is located above the upper edge of the gradation facing the incision is.
  • a circuit breaker with such an extinguishing device is known.
  • the blow magnet is glued to the back of the insulating plate so that it can be installed in the switch.
  • the blow magnet is exposed to the switching arc on the side facing the quenching plates without protection. This is ins particularly disadvantageous when switching off direct currents, since the switching arc runs poorly into the stack of quenching plates. In unfavorable conditions, it stops in front of the front edges of the fire-extinguishing plates facing the insulating material and destroys the blow magnet.
  • a circuit breaker with an extinguishing device in which an insulating plate made of ceramic and the other of gas-emitting material with a soft magnetic iron insert. This increases the running speed of the switching arc from the contact point in the direction of the quenching plates.
  • the gas-emitting insulating plate has a cooling effect on the running arc. The purpose of these measures is to improve the switching capacity of current-limiting switches.
  • the invention has for its object to improve the extinguishing device mentioned above in such a way that, in particular with all-current circuit breakers, a safe extinguishing of the switching arc is ensured even at low direct currents.
  • the extinguishing device should be in the usually existing pure AC scarf with as few changes as possible Allow the series to be categorized and designed to be easy to assemble in order to obtain a supplementary series that can be produced as cost-effectively as possible.
  • the invention has the advantage that a large-area contact of the arc pillar with the front edges of the quenching plates can take place as a result of the gradation, as a result of which considerably improved heat removal and good cooling of the switching arc is brought about.
  • the cross section of the arc column is reduced by including it in the channel-like depression formed by the gradation in connection with the closely fitting insulating material plate. This reduces the amount of electrons and ions that keep the switching arc conductive, and the resulting increased arc voltage leads to a reliable extinguishing of the switching arc.
  • the same stack of quenching plates can be used with a symmetrical design of the quenching plates for DC and AC circuit breakers.
  • a change from the design customary in the case of pure AC circuit breakers means only the blow magnet and the stepped insulating plate covering it. This holds the only inserted blow magnet in connection with the housing in the specified position without gluing or other joining processes. The entire arrangement is easy to assemble and therefore requires little cost.
  • the insulating plate securely flanks the switching arc and on the one hand prevents it from to reach the edges of the blow magnet and, under certain circumstances, destroy it, while on the other hand it can run well into the extinguishing plate contour.
  • the extinguishing device shown is housed in a housing chamber 1 of a switch housing formed from a lower part 1a and an upper part 1b.
  • the housing chamber is filled with a stack of, for example, 12 quenching plates 2 spaced apart from one another, while in its other part in front of the quenching plates in the region of a fixed contact point 3 forming the contact arrangement and a movable contact lever 4, an insulating plate 5 underneath and an insulating plate above 6 are arranged.
  • the insulating plates flank the switching arc which arises when the contact is opened and which, according to lines 7, is indicated at different times as indicated at low direct currents due to magnetic influences to be described, along the lower insulating plate 5 and up to the extinguishing plates 2 can.
  • the lower stepped insulating plate 5 is provided with an angled projection 5a projecting up to the housing wall.
  • the end face 9a of a polarized blow magnet 9 located below the insulating material plate 5, for example made of hard ferrite 7/21 is protected from the arc by means of this attachment 5a, which lies closely against the end edges of the gradation 2c and thus against the extinguishing plates.
  • the blow magnet is inserted into a recess formed by means of molded-on spacer strips 1c of the switch housing and thus secured against displacement.
  • the spacer strips also serve to receive the stepped insulating plate 5, so that the blow magnet is not only covered towards the arc chamber and towards the quenching plates, but also on the other sides, which are not so heavily loaded by the arc.
  • the upper part 1b which is designed similarly to the lower part 1a, there is a free space 10 between the housing wall and the flat insulating material plate 6 due to the spacer strips 1c formed on the housing.
  • the expediently symmetrically formed extinguishing plates 2 with the gradation 2d can protrude into this.
  • the opposite of the un tere insulating plate 5 slightly larger upper insulating plate 6 extends under the gradation 2d almost to the front edge 2b with sufficient clearance.
  • the larger tolerances that can be used in this way make it easier to place the upper housing part 1b on the previously only loosely inserted upper insulating plate and thus considerably simplify assembly when the housing is closed.
  • a yoke potential plate 11 connected to the fixed contact point 3 and a base plate 12 connected to the contact lever 4, which flank the stack of extinguishing plates on both sides.
  • a molded wall At the rear of the housing chamber 1 is provided with a molded wall, in which blow-out openings 1d, not shown in detail, are left out.
  • Essential to the invention is in particular the lower insulating material plate 5 provided with an angular projection 5a and the baffle plates 2 adjoining it with the gradation 2c, since a channel-like depression 8 is thereby formed between the baffle plate contour and the end face of the insulating material plate.
  • the insulating material plate with the angular extension 5a extending to the housing wall covers the blow magnet 9 inserted in the lower part 1a and attracts the switching arc, in particular on its end face 9a, and protects it from the switching arc entering the extinguishing plates and thus against destruction.
  • the upper edge of the gradation 2c is approximately in same height with the top of the blow magnet 9. The gradation is expediently about 1 mm high and 1.5 mm long.
  • the curve of the voltage u or the current i is plotted against the time t.
  • the grid spacing corresponds to a direct current of 2.5 A, a direct voltage of 100 V and a time of 10 ms.
  • the switch-off time t A is only 15 ms, while this value is approximately 65 ms in the case of the switch oscillated in FIG. 3.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
EP84112003A 1983-10-15 1984-10-06 Dispositif d'extinction pour un interrupteur automatique Expired EP0138174B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19838329809 DE8329809U1 (de) 1983-10-15 1983-10-15 Löschkammer für einen Allstrom-Leitungsschutzschalter
DE3337562 1983-10-15
DE8329809U 1983-10-15
DE19833337562 DE3337562A1 (de) 1983-10-15 1983-10-15 Loescheinrichtung fuer einen leitungsschutzschalter

Publications (3)

Publication Number Publication Date
EP0138174A2 true EP0138174A2 (fr) 1985-04-24
EP0138174A3 EP0138174A3 (en) 1986-02-05
EP0138174B1 EP0138174B1 (fr) 1987-09-16

Family

ID=25814893

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112003A Expired EP0138174B1 (fr) 1983-10-15 1984-10-06 Dispositif d'extinction pour un interrupteur automatique

Country Status (2)

Country Link
EP (1) EP0138174B1 (fr)
DE (1) DE3466318D1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619955A1 (fr) * 1987-08-31 1989-03-03 Merlin Gerin Dispositif de coupure pour disjoncteur electrique multipolaire a contacts multiples
FR2622736A1 (fr) * 1987-10-28 1989-05-05 Merlin Gerin Disjoncteur basse tension, a courant continu, et a joues de guidage de l'arc
EP0217106A3 (en) * 1985-08-30 1989-06-28 Licentia Patent-Verwaltungs-Gmbh Extinguishing device for an all-current power circuit breaker
EP0299460A3 (en) * 1987-07-13 1990-10-10 Mitsubishi Denki Kabushiki Kaisha Multi-phase circuit breaker employing arc extinguishing apparatus
EP1103996A1 (fr) * 1999-11-25 2001-05-30 Schneider Electric Industries SA Dispositif de coupure pour appareil interrupteur
FR2923649A1 (fr) * 2007-11-13 2009-05-15 Schneider Electric Ind Sas Chambre de coupure et disjoncteur equipe d'une telle chambre de coupure.
EP1995747A3 (fr) * 2007-05-22 2010-03-03 Schneider Electric Industries SAS Chambre de coupure et disjoncteur équipé d'une telle chambre de coupure
CN103021706A (zh) * 2012-12-28 2013-04-03 常熟开关制造有限公司(原常熟开关厂） 具有电弧隔离套的电开关装置
WO2019175042A1 (fr) * 2018-03-16 2019-09-19 Ellenberger & Poensgen Gmbh Disjoncteur de protection pour la coupure d'un circuit électrique
CN111243886A (zh) * 2020-02-24 2020-06-05 蚌埠普源电气科技有限公司 一种灭弧室及其断路器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102768925B (zh) * 2011-05-06 2015-02-04 北京人民电器厂有限公司 断路器用灭弧室
CN109119307B (zh) * 2018-09-30 2023-08-29 无锡新宏泰电器科技股份有限公司 一种灭弧系统及具有其的断路器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1250909B (fr) * 1967-09-28
FR1317682A (fr) * 1961-03-24 1963-05-10
DE2716619C2 (de) * 1977-04-15 1979-05-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Strombegrenzender Leitungsschutzschalter mit Maßnahmen zur Erhöhung der Laufgeschwindigkeit des Schaltlichtbogeits

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0217106A3 (en) * 1985-08-30 1989-06-28 Licentia Patent-Verwaltungs-Gmbh Extinguishing device for an all-current power circuit breaker
EP0299460A3 (en) * 1987-07-13 1990-10-10 Mitsubishi Denki Kabushiki Kaisha Multi-phase circuit breaker employing arc extinguishing apparatus
FR2619955A1 (fr) * 1987-08-31 1989-03-03 Merlin Gerin Dispositif de coupure pour disjoncteur electrique multipolaire a contacts multiples
EP0306382A1 (fr) * 1987-08-31 1989-03-08 Merlin Gerin Dispositif de coupure pour disjoncteur électrique multipolaire à contacts multiples
US4877929A (en) * 1987-08-31 1989-10-31 Merlin Gerin Breaking device for multipole electrical circuit breaker with multiple contacts
FR2622736A1 (fr) * 1987-10-28 1989-05-05 Merlin Gerin Disjoncteur basse tension, a courant continu, et a joues de guidage de l'arc
EP1103996A1 (fr) * 1999-11-25 2001-05-30 Schneider Electric Industries SA Dispositif de coupure pour appareil interrupteur
FR2801722A1 (fr) * 1999-11-25 2001-06-01 Schneider Electric Ind Sa Dispositif de coupure pour appareil interrupteur
RU2451358C2 (ru) * 2007-05-22 2012-05-20 Шнейдер Электрик Эндюстри Сас Дугогасительная камера и автоматический выключатель, оборудованный этой дугогасительной камерой
EP1995747A3 (fr) * 2007-05-22 2010-03-03 Schneider Electric Industries SAS Chambre de coupure et disjoncteur équipé d'une telle chambre de coupure
CN101436495A (zh) * 2007-11-13 2009-05-20 施耐德电器工业公司 电弧隔板和带有这种电弧隔板的断路器
EP2061051A1 (fr) * 2007-11-13 2009-05-20 Schneider Electric Industries SAS Chambre de coupure et disjoncteur équipé d'une telle chambre de coupure
FR2923649A1 (fr) * 2007-11-13 2009-05-15 Schneider Electric Ind Sas Chambre de coupure et disjoncteur equipe d'une telle chambre de coupure.
US8519292B2 (en) 2007-11-13 2013-08-27 Schneider Electric Industries Sas Arc chute and circuit breaker equipped with one such arc chute
CN101436495B (zh) * 2007-11-13 2013-08-28 施耐德电器工业公司 电弧隔板和带有这种电弧隔板的断路器
CN103021706A (zh) * 2012-12-28 2013-04-03 常熟开关制造有限公司(原常熟开关厂） 具有电弧隔离套的电开关装置
WO2019175042A1 (fr) * 2018-03-16 2019-09-19 Ellenberger & Poensgen Gmbh Disjoncteur de protection pour la coupure d'un circuit électrique
CN111243886A (zh) * 2020-02-24 2020-06-05 蚌埠普源电气科技有限公司 一种灭弧室及其断路器
CN111243886B (zh) * 2020-02-24 2022-04-22 余永利 一种灭弧室及其断路器

Also Published As

Publication number Publication date
EP0138174B1 (fr) 1987-09-16
EP0138174A3 (en) 1986-02-05
DE3466318D1 (en) 1987-10-22

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