EP1032942A1 - Appareil de distribution muni d'un dispositif d'extinction d'arc - Google Patents

Appareil de distribution muni d'un dispositif d'extinction d'arc

Info

Publication number
EP1032942A1
EP1032942A1 EP98962230A EP98962230A EP1032942A1 EP 1032942 A1 EP1032942 A1 EP 1032942A1 EP 98962230 A EP98962230 A EP 98962230A EP 98962230 A EP98962230 A EP 98962230A EP 1032942 A1 EP1032942 A1 EP 1032942A1
Authority
EP
European Patent Office
Prior art keywords
arc
wall
insulating strip
chamber
quenching
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
EP98962230A
Other languages
German (de)
English (en)
Other versions
EP1032942B1 (fr
Inventor
Ludwig Niebler
Christian Schreckinger
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1032942A1 publication Critical patent/EP1032942A1/fr
Application granted granted Critical
Publication of EP1032942B1 publication Critical patent/EP1032942B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns

Definitions

  • the invention relates to a switching device with a fixed contact and a movable contact, which together form a contact point, and with an arc extinguishing device which serves to extinguish an arc occurring at this contact point and which has an assembly designed as an arc chamber composed of a plurality of parallel means of an insulating strip Spaced quenching plates and a first and a second arc guide plate, the two arc guide plates are each arranged adjacent to one of the outer quenching plates of the arc quenching device and wherein the insulating strip has a wall forming the arc chamber closure at which the quenching plates end.
  • a generic switching device has been available on the electrical market for some time.
  • an electric arc occurs at the opening contact points when electrical currents are switched off.
  • This arc causes wear at the contact points by burning off the contact material and delays the disconnection of the circuit, since the current continues to flow through the arc until it goes out.
  • electrical switching or Protective devices with a certain output or more are equipped with an arc extinguishing device.
  • Such an arc extinguishing device often consists of an arc chamber 1 with arc guide plates 2 and 3 and various components which, among other things, also perform fluidic tasks.
  • the arcing device 1 is designed as a package of U-shaped die-cut quenching plates 4, which are arranged in parallel and are kept at a distance.
  • a strip of insulating material usually a volcanic fever strip 5 is folded around the quenching plates 4, which keeps the quenching plates 4 at a distance and combines them into an assembly. Openings 6 are punched in the insulating strips 5, which, among other things, influence the flow conditions in the arc chamber 1.
  • the baffles 2 and 3 are arranged at the upper and lower ends of the arc chamber 1 according to FIG. 4.
  • the upper arc guide plate 2 forms a contact point 8 together with a movable contact bridge 7.
  • FIG. 6 shows in a cross-sectional representation of the arc extinguishing device the migration of the arc from the contact point into the arc chamber.
  • the arc guide plates 2 and 3 are shaped and arranged in such a way that they lead the arc to the arc chamber 1 as quickly as possible .
  • the arc 9 is then extinguished in the inner part of the arc chamber 1.
  • flow or thermomechanical forces occur between the quenching plates 4 and the arc guide plates 2 and 3. If the arc guiding plates 2 and 3 are not fixed stably enough, which is often not sufficient due to the structural conditions, they touch the outer quenching plates 4 and weld them to them. This reduces the efficiency of the arc chamber 1 for further extinguishing processes. With particularly strong arcs like this As a result of short-circuit shutdowns, there is a risk that they will pass through the arc chamber and short-circuit behind it. In this case, the arc chamber is no longer extinguishing.
  • the arc baffles are kept relatively short, i.e. not to the end of the arc chamber where the quenching plates end. Another option is to completely dispense with the lower arc guide plate.
  • the very short arc guiding plates are either not mechanically supported at all or an additional plastic part is used to support them, but this is associated with corresponding additional costs.
  • the solution with short baffles has the significant disadvantage that the entire volume of the inner part of the arc chamber may not be optimally used during the extinguishing process.
  • the invention has for its object to improve a switching device of the type mentioned above so that the arc chamber is optimally used in its extinguishing effect, and at the same time the risk is eliminated that the arc short-circuits in the space behind the arc chamber.
  • the object is achieved in that one of the arc baffles protrudes beyond the wall of the insulating strip into a space behind the arc chamber and at the same time the other of the arc baffles is sealed off from the space behind the arc chamber by the wall of the insulating strip in connection with a housing wall.
  • a particularly advantageous embodiment of the invention exists when one of the arc guiding plates is supported in such a way that an approach to the nearest quenching plate is prevented.
  • the arc baffle which is sealed off from the space behind the arc chamber, extends to the wall of the insulating strip except for an assembly play in order to optimally utilize the arc chamber in its extinguishing effect.
  • the solution according to the invention requires neither additional parts nor additional assembly steps.
  • the solution can be implemented in a simple manner by means of a slightly increased material expenditure and thus low additional costs for the insulating strip.
  • FIG. 1 shows a perspective view of an arc extinguishing device according to the invention in cooperation with a contact point
  • FIG. 2 shows a sectional view of an arc extinguishing device according to the invention in cooperation with a contact point
  • FIGS. 1 and 2 show an arc chamber of the arc extinguishing devices according to FIGS. 1 and 2,
  • FIG. 4 shows an arc quenching device in a known design
  • 5 shows the arc arrester of the arc extinguishing device according to FIG. 4
  • FIG. 6 shows a cross-sectional illustration of the known arc extinguishing device with illustration of the extinguishing effect in connection with the migration of the arc into the arc chamber.
  • FIG. 1 shows an arc extinguishing device consisting of an arc chamber 10 with an upper 11 and a lower arc guide plate 12.
  • the arc chamber 10 is designed as a package of U-shaped stamped quenching plates 13 which are arranged in parallel and are kept at a distance.
  • An insulating strip 14 is folded around the quenching plates 13, which keeps the quenching plates 13 at a distance and combines them into an assembly.
  • the insulating strip 14 has a wall 15 forming the arc chamber end, on which the quenching plates 13 end.
  • the upper arc guide plate 11, which is arranged parallel to the uppermost quenching plate 13, forms, together with a movable contact bridge 16, a contact point 17 at which, when the contact is opened, i.
  • an arc forms when the switching device trips.
  • the lower arc guide plate 12 Arranged parallel to the lowest extinguishing plate 13 is the lower arc guide plate 12, which projects beyond the wall 15 of the insulating strip 14 into the space behind the arc chamber 10.
  • the lower arc guide plate 12 is supported on a protruding tab 18 of the wall 15, so that on the one hand an approach to the nearest quenching plate 13 is prevented and on the other hand a migration of the arc base at the lower arc guide plate 12 into the space behind the arc chamber 10 is excluded becomes.
  • the upper arc guide plate 11 is guided to a projecting tab 19 of the wall 15 except for an assembly game. It is in a groove 20 of the housing, from which the housing Sea section 21 is shown. The fixation in the housing also ensures that the upper arc baffle 11 cannot approach the upper arc 13 of the arc chamber 10.
  • the mode of operation of the arc quenching device improved in this way can be seen from FIG.
  • the arc guide plates 11 and 12 have a length that optimally utilizes the arc chamber 10, while at the same time the risk of a short circuit of the arc behind the arc chamber 10 is eliminated by the support of the lower arc guide plate 12 and the partitioning of the upper arc guide plate 11. As measures for this, the wall 15 was extended upwards and downwards by projecting tabs 18 and 19.
  • Figure 3 shows the arc chamber 10 with the package consisting of the quenching plates 13, which is held together by the insulating strip 14.
  • the wall 15 is extended up and down by projecting tabs 18 and 19 as mentioned above.

Landscapes

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

Abstract

L'invention concerne un appareil de distribution dont la boîte d'extinction d'arc (10) est rentabilisée de manière optimale. A cet effet, un déflecteur inférieur (12) d'arc électrique s'étend dans un espace situé derrière la boîte d'extinction d'arc (10), et un déflecteur supérieur (11) d'arc électrique est cloisonné par rapport à cet espace par formation correspondante d'une bande isolante (14) de la boîte d'extinction d'arc (10). A cette fin, ladite bande isolante (14) est munie de languettes (18, 19) saillantes.
EP98962230A 1997-11-21 1998-11-09 Appareil de distribution muni d'un dispositif d'extinction d'arc Expired - Lifetime EP1032942B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29720715U 1997-11-21
DE29720715U DE29720715U1 (de) 1997-11-21 1997-11-21 Schaltgerät mit Lichtbogen-Löscheinrichtung
PCT/DE1998/003272 WO1999027553A1 (fr) 1997-11-21 1998-11-09 Appareil de distribution muni d'un dispositif d'extinction d'arc

Publications (2)

Publication Number Publication Date
EP1032942A1 true EP1032942A1 (fr) 2000-09-06
EP1032942B1 EP1032942B1 (fr) 2002-02-20

Family

ID=8048971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98962230A Expired - Lifetime EP1032942B1 (fr) 1997-11-21 1998-11-09 Appareil de distribution muni d'un dispositif d'extinction d'arc

Country Status (5)

Country Link
US (1) US6262384B1 (fr)
EP (1) EP1032942B1 (fr)
CN (1) CN1132207C (fr)
DE (2) DE29720715U1 (fr)
WO (1) WO1999027553A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2031617A2 (fr) 2007-09-03 2009-03-04 LS Industrial Systems Co., Ltd Dispositif d'extinction d'arc d'un disjoncteur pour un démarreur de moteur manuel

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19935632A1 (de) * 1999-07-29 2001-02-01 Abb Patent Gmbh Lichtbogenlöschblechpaket für ein elektrisches Schaltgerät
DE10048328C2 (de) * 2000-09-28 2003-01-23 Aeg Niederspannungstech Gmbh Lichtbogen-Löscheinrichtung
DE10356271B4 (de) 2003-11-28 2008-02-14 Siemens Ag Schaltgerät
DE102005007282A1 (de) * 2005-02-17 2006-08-24 Abb Patent Gmbh Elektrisches Installationsgerät mit Lichtbogen-Vorkammerraum, Vorkammerplatten und strombegrenzender Lichtbogenlöscheinrichtung
DE102005007303B4 (de) * 2005-02-17 2013-03-21 Abb Ag Elektrisches Installationsgerät mit Lichtbogen-Vorkammerraum, Lichtbogenleitschienen und strombegrenzender Lichtbogenlöscheinrichtung
DE102009023556B4 (de) * 2009-05-30 2012-01-19 Abb Ag Elektrisches Schaltgerät mit einem thermischen Auslöser
US8866034B2 (en) * 2011-04-14 2014-10-21 Carling Technologies, Inc. Arc runner with integrated current path that develops a magnetic field to boost arc movement towards splitter plates
US8963038B2 (en) * 2011-09-19 2015-02-24 Stoss Kommen Pope High voltage relay non mercury
US10056210B2 (en) 2016-01-14 2018-08-21 Rockwell Automation Switzerland Gmbh Arc chamber assembly and method
CN109360698B (zh) * 2018-11-07 2023-10-03 南宁超伏电气科技有限公司 一种可嵌套安装在绝缘子串上的灭弧装置

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US2030582A (en) * 1933-03-13 1936-02-11 Ite Circuit Breaker Ltd Circuit controlling method and apparatus
US2363606A (en) * 1942-03-23 1944-11-28 Square D Co Arc suppressor
US2468422A (en) 1945-06-20 1949-04-26 Ite Circuit Breaker Ltd Arc chute
US2859193A (en) 1956-07-30 1958-11-04 Goodrich Co B F Aqueous dispersion comprising carboxyl containing elastomer, vulcanizing agent, and formaldehyde
US2942083A (en) * 1956-12-24 1960-06-21 Westinghouse Electric Corp Circuit interrupters
DE1185269C2 (de) * 1961-08-21 1975-05-15 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Einpoliger selbstschalter in schmalbauform
DE1238538B (de) * 1963-07-19 1967-04-13 Licentia Gmbh Loeschblechanordnung fuer Schaltgeraete, insbesondere fuer Installationsselbstschalter
JPS5644458U (fr) 1979-09-14 1981-04-22
DE3131437A1 (de) * 1981-08-07 1983-02-24 Siemens AG, 1000 Berlin und 8000 München "elektrischer schalter"
DE3421876A1 (de) * 1984-06-13 1985-12-19 Brown, Boveri & Cie Ag, 6800 Mannheim Lichtbogenloescheinrichtung
JPH07118252B2 (ja) * 1988-06-09 1995-12-18 松下電工株式会社 リモートコントロール式回路しゃ断器
DE4410108C2 (de) * 1994-03-21 1996-08-22 Siemens Ag Lichtbogenlöschkammer mit drei Barrieren für den Durchtritt von Lichtbogengasen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9927553A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2031617A2 (fr) 2007-09-03 2009-03-04 LS Industrial Systems Co., Ltd Dispositif d'extinction d'arc d'un disjoncteur pour un démarreur de moteur manuel

Also Published As

Publication number Publication date
CN1132207C (zh) 2003-12-24
US6262384B1 (en) 2001-07-17
CN1278359A (zh) 2000-12-27
DE29720715U1 (de) 1998-01-22
DE59803150D1 (de) 2002-03-28
WO1999027553A1 (fr) 1999-06-03
EP1032942B1 (fr) 2002-02-20

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