EP0673048B1 - Dispositif d'extinction d'arc à tÔles d'extinction - Google Patents

Dispositif d'extinction d'arc à tÔles d'extinction Download PDF

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Publication number
EP0673048B1
EP0673048B1 EP95100888A EP95100888A EP0673048B1 EP 0673048 B1 EP0673048 B1 EP 0673048B1 EP 95100888 A EP95100888 A EP 95100888A EP 95100888 A EP95100888 A EP 95100888A EP 0673048 B1 EP0673048 B1 EP 0673048B1
Authority
EP
European Patent Office
Prior art keywords
extinguishing
arc
plates
switching portion
adjacent
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
EP95100888A
Other languages
German (de)
English (en)
Other versions
EP0673048A1 (fr
Inventor
Ferdinand Amann
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.)
Schneider Electric Sachsenwerk GmbH
Original Assignee
Sachsenwerk AG
AEG Sachsenwerk 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
Application filed by Sachsenwerk AG, AEG Sachsenwerk GmbH filed Critical Sachsenwerk AG
Publication of EP0673048A1 publication Critical patent/EP0673048A1/fr
Application granted granted Critical
Publication of EP0673048B1 publication Critical patent/EP0673048B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the invention relates to an arc extinguishing device according to the preamble of the 1st claim.
  • An arc quenching device of this type is known from EP 028 012 A1 and is located together with a assigned switch in a closed, with a Room filled with electronegative extinguishing gas.
  • the one package Compound extinguishing plates are one in the direction of movement in the event of a shutdown an arc-pulling contact of the Switch arranged one behind the other at a distance and offset in the longitudinal direction so that the distance between the arc-pulling end of the contact and the facing edges of the quenching plates in the course of Switch-off movement increases.
  • the extinguishing plates have breakthroughs on provided as a cooling device for the arc gases are.
  • the invention has for its object in a Arc extinguishing device according to the preamble of the 1st Claim to take measures by which another Improvement of the arc extinguishing effect is achieved.
  • the openwork Arc quenching plates consisted of commercially available on the Hot-dip galvanized expanded metal surface with diamond-like openings of about 5 mm x 2 mm was. It is assumed that the increased Extinguishing effect is based on the fact that the partial arcs that are the breakthrough webs between the individual quenching plates burn due to the occurrence of a burning arc Print events in the quenching plate package intensively with unloaded Extinguishing gas, especially FS6, flows around and is therefore strong cooled and thus deleted.
  • the influx of through Arc exposure unloaded gas in the individual extinguishing chamber sections is by the in the Breakthrough areas provided breakthroughs essential relieved, while intensive mixing by swirling contaminated and unstressed extinguishing gas is suspect.
  • the breakthroughs also offer that Advantage that this is thermally stressed by the arc and rapidly expanding extinguishing gas from the subchambers flow out and be replaced by unloaded extinguishing gas can.
  • the arc plasma is accordingly by the Turbulence mixed with fresh extinguishing gas and cooled, resulting in a rapid increase in the dielectric strength of the Switching distance leads. This causes the arc times and thus the total load on the switching arrangement significantly reduced. It also results in a very low spread of the arc times and therefore a very stable switching behavior.
  • the invention is based on the Principle representations of an embodiment closer explained.
  • an electronegative Extinguishing gas especially sulfur hexafluoride (SF6)
  • SF6 sulfur hexafluoride
  • a medium-voltage switch-disconnector 1 whose movable contact piece 1.1 can be pivoted at one end an axis 2 is mounted and one when switching off Load current arcing contact end 1.2 with a closed switching path with a fixed one Switch 1.3 is in electrically conductive slide system.
  • the switching piece 1 by means of a drive rod articulated thereon 3 pivoted away from the fixed contact 1.3, which free contact end 1.2 the fixed contact 1.3 an arc horn 1.4 provided thereon.
  • the Extinguishing plates 5 lie in the direction of movement of the Switch piece 1.1 in a row.
  • the arcing Free contact end 1.2 only approaches after one predetermined swivel angle to a minimum distance a to the extinguishing sheet edges there and moves away when swiveling further from the neighboring Fire-fighting sheet edges.
  • the longitudinal axis 1.5 of the movable Switch piece 1.1 runs at the point of greatest approximation to the quenching plates 5 in a plane to which the quenching plates 5 lie in parallel planes.
  • the quenching plates 5 are at least one of the quenching plates 5, but preferably all with several openings 6 provided that in particular regularly about the Spread the surface as shown in Fig. 2.
  • these quenching plates 5 are preferably made of expanded metal with diamond-shaped openings 6, the die Breakthroughs 6 surrounding webs 7 compared to Extinguishing sheet level are inclined.
  • the improved flow through the quenching plate stack causes thereby a significantly increased mixing of loaded with unloaded extinguishing gas, the to the inclined webs 7 resulting turbulence Increase the mixing process.
  • the center distance between adjacent quenching plates 5 is approximately 1/10 of the largest edge length of the quenching plate 5 and is preferably about 7 mm.
  • the Extinguishing plates 5, if necessary, on the contact piece 1.1 facing edge an open towards the switching piece end 1.2 Have cutout whose width is larger than the width of the free contact piece end can be 1.2.
  • that is Switch 1.1 preferably rotatable as one end stored switching knife, which the fixed contact 1.3 on opposite sides contacted for optimal current transfer at low To achieve contact resistance.
  • the arcing horn 1.4 runs in particular parallel to the neighboring first Extinguishing sheet of the fire sheet package and is with this metallically and electrically connected.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (6)

  1. Dispositif d'extinction d'arc électrique avec plusieurs tôles d'extinction (5) orientées parallèlement et espacées les unes des autres suivant la direction du mouvement d'un organe interrupteur (1.1) déclenchant un arc électrique, d'un interrupteur à moyenne tension (1), disposées avec l'organe interrupteur (1.1) dans un espace rempli de SF 6 comme gaz d'extinction électronégatif, caractérisé en ce que les tôles d'extinction (5) sont en métal étiré et comportent des perforations (6) en forme de losange, et les segments (7) entourant les perforations (6) sont inclinés par rapport au plan des tôles.
  2. Dispositif d'extinction d'arc électrique selon la revendication 1, caractérisé en ce que l'écart entre les tôles d'extinction voisines est environ d'un dixième de la longueur de la plus grande arête d'une tôle d'extinction.
  3. Dispositif d'extinction d'arc électrique selon la revendication 1 ou une des revendications suivantes, caractérisé en ce que les tôles d'extinction ont une échancrure ouverte du côté de l'organe interrupteur (1.2) sur l'arête orientée vers la pièce d'interruption (1.1).
  4. Dispositif d'extinction d'arc électrique selon la revendication 1 ou une des revendications suivantes, caractérisé en ce que les tôles d'extinction (5) sont reliées électriquement à l'organe interrupteur fixe (1.3).
  5. Dispositif d'extinction d'arc électrique selon la revendication 4, caractérisé en ce que une cloche à arc électrique (1.4) est fixée et en contact électrique avec l'organe interrupteur fixe (1.3) voisin des tôles d'extinction (5), et en ce que la cloche à arc électrique (1.4) est reliée par conducteur à la tôle d'extinction (5) voisine.
  6. Dispositif d'extinction d'arc électrique selon la revendication 4 ou 5, caractérisé en ce que la cloche à arc électrique (1.4) est attenante et en contact avec la tôle d'extinction (5) voisine.
EP95100888A 1994-03-19 1995-01-24 Dispositif d'extinction d'arc à tÔles d'extinction Expired - Lifetime EP0673048B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4409495 1994-03-19
DE4409495A DE4409495A1 (de) 1994-03-19 1994-03-19 Lichtbogenlöscheinrichtung mit Löschblechen

Publications (2)

Publication Number Publication Date
EP0673048A1 EP0673048A1 (fr) 1995-09-20
EP0673048B1 true EP0673048B1 (fr) 1998-04-01

Family

ID=6513296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100888A Expired - Lifetime EP0673048B1 (fr) 1994-03-19 1995-01-24 Dispositif d'extinction d'arc à tÔles d'extinction

Country Status (2)

Country Link
EP (1) EP0673048B1 (fr)
DE (2) DE4409495A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4485492A4 (fr) * 2022-02-24 2026-01-07 Ls Electric Co Ltd Boîte de soufflage et commutateur de charge de rupture la comprenant

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB300575A (en) * 1927-11-15 1929-10-03 Siemens Ag Improvements in or relating to electrical switches
GB738674A (en) * 1953-02-27 1955-10-19 Allis Chalmers Mfg Co Improvements in or relating to electric circuit interrupter
DE1040103B (de) * 1957-03-20 1958-10-02 Wissenschaftlich Tech Buero Fu Loescheinsatz fuer elektrische Schaltgeraete
DE1126010B (de) * 1960-09-16 1962-03-22 Licentia Gmbh Loeschblechanordnung fuer Niederspannungsschaltgeraete
DE1276165B (de) * 1961-02-20 1968-08-29 Licentia Gmbh Lichtbogenloeschkammer fuer elektrische Schaltgeraete
JPS5663736A (en) * 1979-10-27 1981-05-30 Fuji Electric Co Ltd Device for extinguishing circuit breaker
DE8410454U1 (de) * 1984-04-04 1985-05-15 Felten & Guilleaume Energietechnik GmbH, 5000 Köln Lichtbogenlöscheinrichtung für Schaltgeräte der elektrischen Energietechnik
DE3820489A1 (de) * 1988-06-16 1989-12-21 Felten & Guilleaume Energie Gekapselte lasttrennschalteranordnung
DE3912726A1 (de) * 1989-02-08 1990-08-09 Siemens Ag Lichtbogenloeschkammer mit loeschblechen
DE4141685C2 (de) * 1991-12-18 1996-07-04 Sachsenwerk Ag Schaltanlage für Mittel- oder Hochspannung
DE4219673A1 (de) * 1992-06-16 1993-12-23 Emitec Emissionstechnologie Metallträger aus Streckmetallband

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4485492A4 (fr) * 2022-02-24 2026-01-07 Ls Electric Co Ltd Boîte de soufflage et commutateur de charge de rupture la comprenant

Also Published As

Publication number Publication date
DE4409495A1 (de) 1995-09-21
EP0673048A1 (fr) 1995-09-20
DE59501744D1 (de) 1998-05-07

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