EP0051756A1 - Dispositif d'extinction d'arc éléctrique, notamment pour disjoncteur de protection - Google Patents

Dispositif d'extinction d'arc éléctrique, notamment pour disjoncteur de protection Download PDF

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Publication number
EP0051756A1
EP0051756A1 EP81108168A EP81108168A EP0051756A1 EP 0051756 A1 EP0051756 A1 EP 0051756A1 EP 81108168 A EP81108168 A EP 81108168A EP 81108168 A EP81108168 A EP 81108168A EP 0051756 A1 EP0051756 A1 EP 0051756A1
Authority
EP
European Patent Office
Prior art keywords
arc
plates
recess
circuit breaker
breaker according
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
EP81108168A
Other languages
German (de)
English (en)
Other versions
EP0051756B1 (fr
Inventor
Erhard Ing. Grad. Runtsch
Werner Bruckner
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.)
BBC Brown Boveri AG Germany
Original Assignee
Brown Boveri und Cie 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, BBC Brown Boveri AG Germany filed Critical Brown Boveri und Cie AG Germany
Priority to AT81108168T priority Critical patent/ATE13108T1/de
Publication of EP0051756A1 publication Critical patent/EP0051756A1/fr
Application granted granted Critical
Publication of EP0051756B1 publication Critical patent/EP0051756B1/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
    • H01H9/36—Metal parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc

Definitions

  • the invention relates to a circuit breaker with at least one fixed and at least one movable contact piece, between which in the case of a z. B. caused by a short-circuit current, an arc is drawn, which is supplied via at least one arc baffle connected to one of the contact pieces to a quenching plate packet for extinguishing the arc, which arc quenching sheet packet is surrounded by a covering.
  • the object of the invention is to provide a sheathing with which a further improvement for the arcing in the arc stack and a reduction in the risk of reignition are achieved.
  • the covering additionally covers the exit side of the arc quenching plate package, and that the covering has gas outlet openings in this area, for. B. is perforated.
  • the covering is provided with a recess in the area in which it is provided with a recess on the outer sides of the quenching plate stack delimiting the arc-quenching plate package, then according to. a further advantageous embodiment of the invention, the recess is closed.
  • a web extending transversely to the direction of the arc running and to which the recess adjoins can be arranged in the entry region of the arc-quenching plate stack.
  • This web can also advantageously be offset backwards, that is to say towards the exit side, so that the casing has projections which point forward and are at a distance from one another.
  • the cover also covers the outlet side of the arc quenching plate package and has suitable gas outlet openings, which can be circular or slotted, the exhaust air cross section could be significantly enlarged and distributed over the entire area, with a wall on the housing of the circuit breaker no longer is required.
  • a further improvement of the invention can be that the recess has a further connecting web approximately in its center, which is parallel to the front connecting web runs transverse to the direction of the arc, which further reduces the risk of reignition by locking off the arc base points on the two guide rails.
  • a cover on one of the middle arc-quenching plates can be provided.
  • Such a cover can be formed with a corresponding recess and one or two connecting webs, so that the intermediate cover has the same shape as the covers of the two outer arc-quenching plates.
  • This intermediate cover can be connected to the area that covers the exit side of the arc-quenching plate package; there is, of course, also the possibility of integrally connecting the upper or lower cover to the intermediate layer or intermediate cover and in each case inserting the further cover, L-shaped, covering the arc quenching package on the opposite side, into the switch.
  • a fixed contact piece 12 and a movable contact piece 13 are located within a housing 11 of a circuit breaker, the movable contact piece 13 being pivotably mounted about a fixed axis 14.
  • the fixed contact piece 12 merges into a first arc guide plate 15.
  • a second arc guide plate 16 is provided parallel to the first arc guide plate 15 and is connected to the movable contact piece 13 or to the contact lever 13 via a stranded connection 17.
  • an arc 221 is initially formed, which arises directly at the point at which the two contact pieces 12 and 13 touch. This arc travels, influenced by the thermal and magnetic self-blowing, and moves away from the contact point; one base point moves the movable contact piece 13 and the other base point along the arc guide plate 15.
  • the arc in its second position is designated by reference number 222.
  • the arc is driven in the direction of arrow A to the quenching plates 18 to 21 and ge by the magnetic effect of the iron quenching plate package in the recess 22 of the individual arc quenching plates pulled, forms base points on the individual sheets and then burns between the individual extinguishing sheets.
  • the arc has the reference number 224.
  • an optimal exhaust air design is essential by the design of the outlet openings (FIG. 1 without a designation ) responsible.
  • This envelope 30 acc. 2 is U-shaped and has an upper and a lower plate 32 and 34, which is placed on the upper and lower surface of the arc quenching plate 16 and 21, respectively. These two plates are connected to one another by means of a connecting web 36 which has openings 38.
  • the plates 32 and 34 have a keyhole-like recess 40 and 42, which are closed in the front region, that is in the region of the entry of the arc into the arc quenching plate package, by a web or a barrier 44 and 46.
  • FIG. 2 shows the deion sheet 21 with its sheet cutout 22 in order to indicate how the covering according to FIG. 2 is attached to the arc-extinguishing sheet packet.
  • FIG. 2a shows how the sheathing is integrated in the arc-quenching plate package, the arc that is just entering the arc-quenching plate package having the reference number 223.
  • FIG. 3 shows a configuration similar to that in FIG. 2.
  • a casing can be seen with an upper plate 60 and a lower plate 62, which are connected to one another by means of a connecting web 64, which connecting web is perforated by means of slots 66.
  • Keyhole-like recesses 68 and 70 which are similar to the recesses according to FIG. 2, are likewise made in the plates 60 and 62.
  • the connecting webs can be offset to the rear in the direction of arcing, as shown in FIG. 3.
  • these connecting webs have the reference numbers 76 and 78, so that a U-shaped recess 80 and 82 which is open towards the front and is flush with the recess 68 and 70 is formed in this way.
  • the extensions can also be circular. These have the reference numbers 72 and 74.
  • the arrangement of the web ensures that the base points of the arc 223 in FIG. 2a can further enter the sheet metal cutout or the recess 22 and thus the column of the arc 223 is more exposed to the magnetic effect of the quenching sheet packets 18 to 21. This results in a faster and safer arc entry.
  • the slots 66 are arranged such that they lie between each sheet gap, the slots being arranged one above the other in two rows which run parallel to one another.
  • the slots of the opposite rows are staggered so that a slot in one row must lie between two slots in the other row.
  • FIG. 3a it is shown how the covering according to. 3 is integrated in the arc quenching plate package.
  • the arrangement is the same as in FIG. 2a.
  • the breakthroughs 38 acc. 2 are circular.
  • the openings as slots 66; the effect of these slot-like outlet openings is the same as that of the circular openings.
  • Figure 4 an envelope is shown that the gem.
  • Figure 3 is similar; only between the front web 76 and 78 and the circular extension 72 and 74, an intermediate web 77 is provided, through which the risk of reignition is reduced even further by the fact that the arc base points on the guide rails 15 and 16 are sealed off.
  • FIG. 5 shows an embodiment which is similar to that of FIG. 4.
  • an intermediate plate 84 is provided, which has a connecting web 86 which corresponds to the connecting webs 76 and 78.
  • the intermediate plate also has a connecting web 88 which corresponds to the connecting webs 77.
  • the recess which has no reference number
  • the recess which has no reference number
  • the intermediate plate 24 can either be inserted loosely into the arc-quenching plate packet or connected in a suitable manner to the rear area of the gas outlet side.
  • integrally connecting the plates 60 and 84 via the partial area 90 then the rest of the area, ie the plate 62 with the L-shaped portion 92 attached to it without connection to the plate 60 and the plate 84, is inserted into the quenching plate stack, or vice versa.
  • a further improvement of the invention is achieved by the arrangement of the intermediate plate, which should be arranged approximately in the middle of the sheet metal peket.
  • the sheathing can of course not only be used for arc extinguishing plates in a circuit breaker, but wherever arc extinguishing plates are used to extinguish an arc or to limit a short-circuit current, for example. This can be the case with circuit breakers, contactors and similar electrical switching devices.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
EP81108168A 1980-11-08 1981-10-10 Dispositif d'extinction d'arc éléctrique, notamment pour disjoncteur de protection Expired EP0051756B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81108168T ATE13108T1 (de) 1980-11-08 1981-10-10 Lichtbogenloescheinrichtung, insbesondere fuer einen leitungsschutzschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3042168 1980-11-08
DE19803042168 DE3042168A1 (de) 1980-11-08 1980-11-08 Leitungsschutzschalter

Publications (2)

Publication Number Publication Date
EP0051756A1 true EP0051756A1 (fr) 1982-05-19
EP0051756B1 EP0051756B1 (fr) 1985-05-02

Family

ID=6116278

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81108168A Expired EP0051756B1 (fr) 1980-11-08 1981-10-10 Dispositif d'extinction d'arc éléctrique, notamment pour disjoncteur de protection

Country Status (3)

Country Link
EP (1) EP0051756B1 (fr)
AT (1) ATE13108T1 (fr)
DE (1) DE3042168A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994017539A1 (fr) * 1993-01-27 1994-08-04 Felten & Guilleaume Austria Ag Paquet de plaques d'extinction pour une chambre d'extinction d'arc
EP1313117A2 (fr) 2001-11-16 2003-05-21 ABB PATENT GmbH Dispositif d'extinction d'arc pour un interrupteur électronique
CN101677050A (zh) * 2008-09-19 2010-03-24 通用电气公司 具有改进的熄弧结构的断路器
EP3327742A1 (fr) * 2016-11-29 2018-05-30 Siemens Aktiengesellschaft Dispositif d'extinction d'un arc électrique et disjoncteur électromécanique

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD253323A1 (de) * 1986-10-06 1988-01-13 Hermsdorf Keramik Veb Leitungsschutzschalter
DE9004895U1 (de) * 1990-04-30 1990-06-28 Felten & Guilleaume Energietechnik AG, 5000 Köln Kontakteinrichtung für Fehlerstromschutzschalter
DE102010053507B4 (de) * 2010-12-04 2012-07-05 Abb Ag Installationsschaltgerät mit einer Lichtbogenlöscheinrichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1926355B1 (de) * 1969-05-23 1970-11-12 Siemens Ag Lichtbogenl¦schkammer für Niederspannungsleistungsschalter
DE2616825A1 (de) * 1976-04-15 1977-10-27 Bbc Brown Boveri & Cie Leitungsschutzschalter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2419656B2 (de) * 1974-04-24 1978-03-23 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Löschblechstapel, insbesondere für Leitungsschutzschalter, der auf einen Isolierstoffträger aufgeheftet ist
DE2716619C2 (de) * 1977-04-15 1979-05-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Strombegrenzender Leitungsschutzschalter mit Maßnahmen zur Erhöhung der Laufgeschwindigkeit des Schaltlichtbogeits

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1926355B1 (de) * 1969-05-23 1970-11-12 Siemens Ag Lichtbogenl¦schkammer für Niederspannungsleistungsschalter
DE2616825A1 (de) * 1976-04-15 1977-10-27 Bbc Brown Boveri & Cie Leitungsschutzschalter
FR2348559A1 (fr) * 1976-04-15 1977-11-10 Bbc Brown Boveri & Cie Interrupteur automatique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994017539A1 (fr) * 1993-01-27 1994-08-04 Felten & Guilleaume Austria Ag Paquet de plaques d'extinction pour une chambre d'extinction d'arc
EP1313117A2 (fr) 2001-11-16 2003-05-21 ABB PATENT GmbH Dispositif d'extinction d'arc pour un interrupteur électronique
EP1313117A3 (fr) * 2001-11-16 2005-02-16 ABB PATENT GmbH Dispositif d'extinction d'arc pour un interrupteur électronique
CN101677050A (zh) * 2008-09-19 2010-03-24 通用电气公司 具有改进的熄弧结构的断路器
CN101677050B (zh) * 2008-09-19 2013-12-25 通用电气公司 具有改进的熄弧结构的断路器
EP3327742A1 (fr) * 2016-11-29 2018-05-30 Siemens Aktiengesellschaft Dispositif d'extinction d'un arc électrique et disjoncteur électromécanique

Also Published As

Publication number Publication date
EP0051756B1 (fr) 1985-05-02
DE3042168A1 (de) 1982-06-16
DE3042168C2 (fr) 1989-03-02
ATE13108T1 (de) 1985-05-15

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