EP3025361B1 - Appareil de coupure avec deplacement electromagnetique de l'arc - Google Patents

Appareil de coupure avec deplacement electromagnetique de l'arc Download PDF

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Publication number
EP3025361B1
EP3025361B1 EP13815467.9A EP13815467A EP3025361B1 EP 3025361 B1 EP3025361 B1 EP 3025361B1 EP 13815467 A EP13815467 A EP 13815467A EP 3025361 B1 EP3025361 B1 EP 3025361B1
Authority
EP
European Patent Office
Prior art keywords
switching device
legs
arc
switching
shaped
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.)
Active
Application number
EP13815467.9A
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German (de)
English (en)
Other versions
EP3025361A1 (fr
Inventor
Ludwig Niebler
Vadzim Kulinovich
Tobias VIEHAUSER
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
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Siemens AG
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Publication of EP3025361A1 publication Critical patent/EP3025361A1/fr
Application granted granted Critical
Publication of EP3025361B1 publication Critical patent/EP3025361B1/fr
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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
    • H01H9/446—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the contacts

Definitions

  • the invention relates to a switching device with an electromagnetic arc drive, wherein the switching device has a switching chamber with a fixedly positioned switching piece and a movable contact piece arranged opposite thereto.
  • Such arc extinguishing device often consists of an arc chamber with Lichtbogenleitblechen and various components, which fulfill, among other things, fluidic tasks.
  • the arc chamber is often designed as a package of U-shaped punched quenching plates, which are arranged in parallel and are kept at a distance.
  • a strip of insulating material usually a VulkanfieberstMail folded, which keeps the quenching plates at a distance and summarized into an assembly.
  • the baffles are located at the top and bottom of the arc chamber.
  • the upper arc guide plate together with a movable contact bridge forms a contact point.
  • the arc migrates from the contact point into the arc chamber.
  • an arc is formed between the contacts that are separated from each other. Electromagnetic forces move the arc towards the arc quenching chamber.
  • the arc base points of the arc at the exit points of the arc guide plates thereby migrate away from the contact point along the arc guide plates electrically connected to the circuit.
  • the arc guide plates are shaped and arranged so that they lead the arc as quickly as possible to the arc chamber. Inside the arc chamber, the arc is then extinguished. During the described process, current or thermomechanical forces occur between the quenching plates and the arc guide plates. If the arc guide plate is not fixed stable enough, which often does not succeed due to the structural conditions often, they touch the outer quenching plates and weld with them. As a result, the efficiency of the arc chamber for further deletion processes is reduced.
  • the mechanism of action is accordingly that the flow of current across the arc creates a magnetic flux which is deflected by ferromagnetic parts near the contact point such that a force acts on the arc which drives it away from the contact point to an arc extinguishing system.
  • JP S63 126136 A The US 2008/073327 A1 , the US Pat. No. 5,589,572 , the US 5 548 258 A and the EP 1 998 349 A1 each disclose a switching device with an electromagnetic arc drive, wherein the switching device has a switching chamber with a fixedly positioned switching piece with a movable contact piece arranged opposite thereto.
  • the electromagnetic arc drive is designed in the form of a sheet which is positioned around the fixedly positioned switching piece around.
  • the object of the present invention is to provide a switching device with an electromagnetic arc drive, which allows optimization of the deflection and extinguishing of switching arcs.
  • a switching device with an electromagnetic arc drive wherein the Switching device having a switching chamber with a fixedly positioned switching piece and a movable contact piece arranged opposite thereto.
  • the invention is characterized in that the electromagnetic arc drive is designed in the form of a sheet, which is positioned around the fixedly positioned switching piece around.
  • the sheet in particular blower U-shaped with two legs, which are connected to each other via a connecting central part.
  • the connecting central part of the sheet is parallel between the legs of the U-shaped curved fixedly positioned contact piece arranged in the area behind the contacts. Due to the current flow from the conductor connection to the contact, a magnetic flux is induced in the connecting central part of the U-shaped metal sheet, which interacts with the magnetic flux which is induced by the current flow in the arc and thus generates a force on the arc. This force drives the arc away from the contacts.
  • the connecting middle part on the sheet metal is arranged in the area behind the contacts. If the connecting central part of the sheet were further offset in the direction of contacts, the current flow would reduce the induction of the magnetic flux in the sheet metal.
  • the lateral legs of the U-shaped sheet are pulled only so far in the direction of the movable contact piece that they cover the area in which the contacts are located. In this way, the interaction of the magnetic fields is caused by the flow of current in the movable contact piece or minimized by the flowing in the fixed contact piece to the right current to the plate.
  • the advantages of the switching device according to the invention with electromagnetic arc drive are that a magnetic flux is already induced by the current flow in the fixed contact piece between terminal and contact point in the sheet, whereby the magnetic force on the arc is increased. Since no insulation material between the lateral legs on the plate and the contacts is present, the arc can also commutate to the plate and divide. This results in a faster arc voltage increase, which limits the flow of current over the arc faster.
  • the sheet is U-shaped with two legs which are connected to each other via a connecting central part is formed.
  • the connecting central part of the U-shaped plate is arranged in parallel between the legs of the U-shaped bent fixedly positioned contact piece in the area behind the contacts. Due to the current flow from the conductor connection to the contact, a magnetic flux is induced in the connecting central part of the U-shaped metal sheet, which interacts with the magnetic flux induced by the current flow in the arc and thus generates a force on the arc. This force drives the arc away from the contacts.
  • another concept may be that the legs of the U-shaped plate are formed parallel to each other and congruent.
  • the spacing of the two mutually parallel legs of the U-shaped sheet is determined essentially by the leg of the U-shaped sheet.
  • a technical continuation of the inventive concept may consist in that the legs of the U-shaped sheet are guided obliquely from the connecting middle part to the rear.
  • the connecting central part of the sheet is arranged in the area behind the contacts. If the connecting central part were further offset in the direction of contacts, then the current flow would reduce the induction of the magnetic flux in the metal sheet.
  • the lateral legs on the plate are pulled only so far in the direction of moving contact piece that they cover the area in which the contacts are located. Thus, the interaction of the magnetic fields by the current flow in caused movable switching element, or minimized by the fixedly positioned switching piece to the right current flowing through the plate.
  • the connecting central part of the U-shaped sheet is positioned between two legs of the U-shaped fixedly positioned switching piece.
  • the connecting central part of the U-shaped sheet is arranged in parallel between the legs of the U-shaped fixed fixed contact piece in the area behind the contacts. Due to the current flow from the conductor connection to the contact, a magnetic flux is induced in the connecting central part of the sheet, which interacts with the magnetic flux which is induced by the current flow in the arc and thus generates a force on the arc.
  • the connecting central part is positioned below quenching plates, which are arranged in the switching chamber.
  • quenching plates which are arranged in the switching chamber.
  • the contours of the limbs of the U-shaped sheet are adapted to the positioning of the quenching plates arranged above it.
  • This particular geometric embodiment allows optimal use of space.
  • the end portions of the legs of the U-shaped plate are positioned in the region of the contact points of the fixed and the movable contact piece.
  • the lateral legs of the sheet are drawn only so far in the direction of movable contact piece that they cover the area in which the contacts are located.
  • an insulating body is positioned between the connecting central part of the U-shaped plate and the legs of the U-shaped, fixedly positioned contact piece.
  • the insulator essentially insulates the connecting central part of the sheet from the fixedly positioned contact piece.
  • the insulator does not isolate the lateral legs on the sheet metal toward the arc or to the switching chamber interior. This allows the arc created between the contacts to commutate and divide on the lateral legs. Since there is an insulating body between the connecting central part of the sheet and the fixedly positioned contact piece, the commutation of the arc does not interfere with the sheet. That is, there can be no short circuit at any other point between the fixedly positioned contact piece on the plate to the movable contact point.
  • the connecting central part of the U-shaped sheet between two legs of the U-shaped insulating body, which shield the legs of the fixedly positioned contact piece is positioned. Due to the positioning of the insulator, the commutation of the arc on the sheet does not interfere. This leads to the result that there can be no short circuit at any other point between the fixedly positioned contact piece on the plate to the movable contact piece.
  • the present invention finds application in particular in its preferred embodiment as a circuit breaker. In a further use, the present invention may also be used in a compact engine feeder.
  • Fig. 1 shows an arrangement of the components in a switching chamber of a switching device. These include a fixedly positioned contact piece 1 with a contact point 2, which is arranged opposite to a contact point 3 of a movable contact piece 4.
  • the fixedly positioned contact piece 1 is preferably U-shaped with two legs 5, 6, which may be of different lengths and parallel to each other, and the two legs 5, 6 interconnecting connecting portion 7.
  • an electromagnetic arc drive in the form of a sheet 8, which is preferably U-shaped with two legs 9, 10, which are preferably formed parallel and congruent to each other, and a connecting central portion 11.
  • the connecting central portion 11 of the sheet 8 is preferably between the legs 5, 6 of the fixedly positioned contact piece 1 is arranged.
  • the legs 9, 10 of the sheet 8 are preferably drawn obliquely backwards in the direction of the contact points 2, 3.
  • contours 13, 14 are incorporated, which take into account the positioning of the quenching plates 12.
  • Fig. 1 shows, in addition, a conductor terminal 15 is shown on the leg 6 of the fixedly positioned contact piece 1.
  • the current flow 16, in the form of arrows in Fig. 2 is shown, passes over the leg 6 of the fixedly positioned contact piece 1 and continues in the movable contact piece 4.
  • Fig. 3 In addition to the current flow 16 and arc 17, the induced magnetic fields 18, 19, 20 and the magnetic flux 21 are shown.
  • the induced magnetic field 18 is formed on the movable contact 4.
  • the induced magnetic field 19 is located between the movable contact 4 and the fixedly positioned contact 1.
  • the induced magnetic field 20 is formed at the connecting central portion 11 of the sheet 8.
  • the superposition of the magnetic fields 19 and 20 causes a deflection of the arc to the outside. Due to the flow of current from the conductor terminal 15 to the contact points 2, 3, a magnetic flux is induced in the connecting central part 11 of the U-shaped plate 8, which cooperates with the magnetic flux, which is induced by the current flow in the arc 17 and thus a force on the Arc 17 is generated.
  • Fig. 4 shows the arrangement of the components in a switching chamber of a switching device including an insulating body 22 which is U-shaped with two legs 23, 24 and a connecting part 25 between the legs 23, 24.
  • the legs 23, 24 are preferably parallel to each other and opposite each other aligned horizontally.
  • the leg 23 surrounds the leg 5 of the fixedly positioned contact piece 1.
  • the leg 24 of the insulating body 22 is formed in the form of a cover over the leg 6 of the fixedly positioned contact piece 1. Between the legs 23, 24 of the insulating body 22, the connecting central part 11 of the sheet 8 is placed.
  • Fig. 4 also shows the formation of arcs 26.
  • the switching device according to the invention with electromagnetic arc drive in the form of a sheet is characterized in that a magnetic flux is already induced by the current flow in the fixed contact between terminal and pad in the sheet, so that the magnetic force on the arc is significantly increased. Since there is no insulating material between the lateral legs on the plate and on the contacts, the arc can also commutate to the plate and divide. This results in a faster arc voltage increase, which limits the flow of current through the arc faster. In addition, since there is an insulating body between the connecting central part of the sheet and the fixed contact piece, the commutation of the arc does not interfere with the sheet. This causes the formation of a short circuit is excluded.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (10)

  1. Appareil de connexion avec entraînement à arc électrique électromagnétique, l'appareil de connexion présentant une chambre de coupure avec une pièce de connexion (1) à position fixe ayant un point de contact (2) et une pièce de connexion (4) mobile disposée à l'opposé avec un point de contact (3), l'entraînement à arc électrique électromagnétique se présentant sous la forme d'une lame (8), laquelle est positionnée autour de la pièce de connexion (1) à position fixe, un corps isolant (22) étant positionné entre la pièce centrale de liaison (11) de la lame en U (8) et les saillies (5,6) de la pièce de connexion (1) à position fixe configurée en U,
    caractérisé en ce que le corps isolant est configuré en U avec deux saillies (23, 24) et une pièce de liaison (25) entre les saillies (23, 24) et la saillie (23) entourant la saillie (5) de la pièce de connexion (1) à position fixe.
  2. Appareil de connexion selon la revendication 1, caractérisé en ce que la lame (8) est configurée en U avec deux saillies (9,10), lesquelles sont reliées l'une à l'autre par une pièce centrale (11) de liaison.
  3. Appareil de connexion selon la revendication 2, caractérisé en ce que les saillies (9,10) de la lame en U (8) sont configurées parallèlement l'une à l'autre et égales.
  4. Appareil de connexion selon la revendication 3, caractérisé en ce que les saillies (9,10) de la lame en U (8) courent depuis la pièce centrale de liaison (11) en oblique vers l'arrière dans la direction des points de contact (2,3).
  5. Appareil de connexion selon l'une des revendications 1 à 4, caractérisé en ce que la pièce centrale de liaison (11) de la lame en U (8) est positionnée entre les deux saillies (5,6) de la pièce de connexion (1) en U à position fixe.
  6. Appareil de connexion selon l'une des revendications 1 à 5, caractérisé en ce que les zones terminales des saillies (9,10) de la lame en U (8) sont situées dans la zone des points de contact (2,3) de la pièce de connexion (1,4) mobile et à position fixe.
  7. Appareil de connexion selon la revendication 1, caractérisé en ce que la pièce centrale de liaison (11) de la lame en U (8) est positionnée entre deux saillies (23,24) du corps isolant (22) en U, lesquelles blindent les saillies (5,6) de la pièce de connexion (1) à position fixe.
  8. Appareil de connexion selon l'une des revendications 1 à 7, caractérisé en ce que l'appareil de connexion est une protection.
  9. Appareil de connexion selon l'une des revendications 1 à 7, caractérisé en ce que l'appareil de connexion est un disjoncteur.
  10. Appareil de connexion selon l'une des revendications 1 à 7, caractérisé en ce que l'appareil de connexion est une dérivation de moteur compact.
EP13815467.9A 2013-12-18 2013-12-18 Appareil de coupure avec deplacement electromagnetique de l'arc Active EP3025361B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/077157 WO2015090383A1 (fr) 2013-12-18 2013-12-18 Appareil de connexion équipé d'un entraînement à arc électrique électromagnétique

Publications (2)

Publication Number Publication Date
EP3025361A1 EP3025361A1 (fr) 2016-06-01
EP3025361B1 true EP3025361B1 (fr) 2018-03-07

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ID=49911506

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Application Number Title Priority Date Filing Date
EP13815467.9A Active EP3025361B1 (fr) 2013-12-18 2013-12-18 Appareil de coupure avec deplacement electromagnetique de l'arc

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Country Link
EP (1) EP3025361B1 (fr)
CN (1) CN105745728B (fr)
WO (1) WO2015090383A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017125685A1 (de) * 2017-11-03 2019-05-09 Schaltbau Gmbh Schaltgerät mit Lichtbogenlöscheinrichtung und Lichtbogenführung
CN108389742A (zh) * 2018-04-27 2018-08-10 福州大学 加强弧隙吹弧磁通提高电器灭弧能力的方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63126136A (ja) * 1986-11-14 1988-05-30 松下電工株式会社 消弧装置
JPH07296707A (ja) * 1994-04-26 1995-11-10 Fuji Electric Co Ltd 回路遮断器の磁気駆動鉄心絶縁装置
US5589672A (en) * 1994-06-14 1996-12-31 Fuji Electric Co., Ltd. Circuit breaker with arc quenching device and vent
US7716816B2 (en) * 2006-09-22 2010-05-18 Rockwell Automation Technologies, Inc. Method of manufacturing a switch assembly
ES2391200T3 (es) * 2007-05-30 2012-11-22 Bticino S.P.A. Disyuntor de circuitos de alta capacidad de desconexión
CN104137216B (zh) * 2012-02-27 2016-11-09 西门子公司 槽电机、槽电机盖、槽电机-弧板组件和操作方法

Also Published As

Publication number Publication date
EP3025361A1 (fr) 2016-06-01
WO2015090383A1 (fr) 2015-06-25
CN105745728A (zh) 2016-07-06
CN105745728B (zh) 2018-04-27

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