EP3291266B1 - Unité de circuit pour un commutateur électrique et commutateur électrique - Google Patents

Unité de circuit pour un commutateur électrique et commutateur électrique Download PDF

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Publication number
EP3291266B1
EP3291266B1 EP17178757.5A EP17178757A EP3291266B1 EP 3291266 B1 EP3291266 B1 EP 3291266B1 EP 17178757 A EP17178757 A EP 17178757A EP 3291266 B1 EP3291266 B1 EP 3291266B1
Authority
EP
European Patent Office
Prior art keywords
switching unit
current
contact
arc
electrical
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.)
Not-in-force
Application number
EP17178757.5A
Other languages
German (de)
English (en)
Other versions
EP3291266A1 (fr
Inventor
Michael Poles
Reinhard Herdegen
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 EP3291266A1 publication Critical patent/EP3291266A1/fr
Application granted granted Critical
Publication of EP3291266B1 publication Critical patent/EP3291266B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • 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
    • 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
    • H01H2009/348—Provisions for recirculation of arcing gasses to improve the arc extinguishing, e.g. move the arc quicker into the arcing chamber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2205/00—Movable contacts
    • H01H2205/002—Movable contacts fixed to operating part

Definitions

  • the invention relates to a contact system for an electrical switch and an electrical switch with such a contact system.
  • quenching plates For extinguishing arcing typically quenching plates are used, which divide the arc into several sections and cool down and thus delete faster overall.
  • the current flow of the arc creates a magnetic field which drives the arc in the direction of the quenching plates, where it is then extinguished.
  • quenching plates made of ferromagnetic materials are used to speed up the quenching process.
  • a contact device having a movable contact for bridging between a pair of opposed fixed contacts, whereby arc elongation is created during opening of the movable contact.
  • a central portion of a movable contact which is located between the fixed contacts, bent to the fixed contacts in a gate shape, and a contact spring inserted between a recess in the back of the gate portion.
  • the electromagnetic repulsion acts between a current flowing in the leg of the gate portion and an arc between the movable and fixed contacts to extend the arc to an arc quenching space.
  • the DE 10 2014 006494 A1 describes an installation switching device with a contact point, which is formed with a fixed and a movable contact piece, with a contact carrier, which carries at its free end, the movable contact piece, wherein at a Ausschalte Stuttgart the movable contact piece is separated from the fixed contact piece and thereby at the contact point in the state of separate contact pieces, an arc between the fixed and the movable contact piece is formed.
  • the contact carrier is, starting from the movable contact piece, formed with a current-carrying portion, which is in spatial proximity to the arc-generating point, and which is oriented approximately parallel to the extension direction of the arc in the state of its formation.
  • a circuit breaker is disclosed.
  • the power switch comprises a first movable contact and a first fixed contact, which cooperate respectively, a second movable contact and a second fixed contact, which cooperate appropriately, and a magnetic Ausblasspule.
  • the invention has for its object to provide a switching unit in which the deletion process is accelerated by additional magnetic forces.
  • the switching unit according to the invention for an electrical switch according to claim 1 comprises at least one fixed contact and a moving contact with a power supply to the moving contact, which are brought to close or open the current path in mechanical contact with each other or mechanically or magnetically separated, wherein the switching unit further at least a quenching sheet, which influences a resulting when opening the electrical contacts arc, wherein the power supply is designed such that it conducts the current in the open position, the current in the opposite direction to the current direction of the arc along the arc.
  • the advantage here is that the deletion process is accelerated by an additional magnetic force.
  • the current In the open position of the switching unit, the current is conducted in the opposite direction to the current direction of the arc, whereby the arc is driven by the magnetic field of the power line in the direction of the quenching plates. Due to the repulsive forces between the arc and the power supply to the moving contact the arc is moved even faster towards the quenching plates.
  • the arc has larger contact surfaces with the quenching plates and is therefore better cooled by the quenching plates. Furthermore, this speeds up the extinguishing process, reduces the flow rate and increases the safety of the shutdown process in the event of a short circuit.
  • the power supply is designed so that it conducts the current in the open position substantially parallel to the arc.
  • the moving contact comprises a contact arm and a contact piece and the power supply is designed so that it runs in the open position substantially parallel to the arc.
  • the switching unit additionally comprises an insulation, which electrically isolates the power supply to the arc.
  • the power supply is arranged in the immediate vicinity of the arc, so that the arc runs as close as possible to the power supply.
  • the contact arm is rotatably mounted about a pivot point D and is pivoted to close or open the current path about this pivot point D.
  • the power supply has a semicircular shaped section, which extends in the open position substantially parallel to the arc.
  • the power supply of solid, electrically conductive material or as an electrically conductive strand, which is permanently installed in the insulation executed.
  • the electrical switch according to the invention according to claim 5 comprises a switching unit according to the invention and a handle, wherein the handle actuates the switching unit for closing or opening the current path.
  • the switching unit is arranged in a pile cassette.
  • the electrical switch is a power switch, a line switch, a motor protection switch, a contactor, a DC voltage switch or an ACB (air circuit breaker).
  • FIG. 1 a conventional switching unit is shown.
  • the current guide comprises a fixed contact 100 with a contact piece 400 and a moving contact 200 with a contact piece 300.
  • quenching plates 500 are provided, which serve to influence an arc 600 which is formed when the electrical contacts are opened.
  • the flow of current is shown by arrows and passes through the contact arm 200 of the moving contact to the contact piece 300 via the arc 600 to the contact piece 400 of the fixed contact 100.
  • the current flow can of course also be opposite to the direction of the arrow.
  • FIG. 2 the switching unit 1000 according to the invention is shown.
  • the illustration of the FIG. 2 the closed position, which allows a flow of current.
  • the switching unit 1000 comprises a fixed contact 100, 400 and a moving contact 200, 300, which are brought into mechanical contact or mechanically or magnetically separated to close or open the current path, wherein the switching unit 1000 further comprises at least one arc splitter 500, which an affected when opening the electrical contacts 100, 400: 200, 300 resulting arc 600.
  • the current is conducted via a power supply 250 to the moving contact 200 and the contact piece 400.
  • the moving contact 200, 300 comprises a contact arm 200 and a contact piece 300.
  • the fixed contact 100, 400 may consist of a contact arm 100 and a contact piece 400.
  • the two contact pieces 300 and 400 are in mechanical contact, so that the switching unit 1000 is in the closed position and a current flow is possible.
  • FIG. 2 Furthermore, an insulation 700 is shown, which electrically isolates the power supply 250 from a developing arc 600.
  • FIG. 3 shows the switching unit 1000 according to the invention in the open position.
  • the fixed contact 100, 400 were mechanically or magnetically separated from the moving contact 200, 300.
  • an arc 600 is formed. This arc 600 forms between the contact pieces 300 and 400.
  • the quenching plates 500 serve to divide the arc 600 and delete.
  • the power supply 250 is designed such that it conducts the current in the open position of the switching unit 1000 in the direction opposite to the current direction of the arc 600.
  • the current of the power supply 250 is conducted along the arc 600.
  • the power supply 250 extends in the open position substantially parallel to the arc 600.
  • the insulation 700 electrically isolates the power supply 250 to the arc 600.
  • the switching unit 1000 according to the invention in the representation of Figures 2 and 3 is thereby brought into the closed or open position by being rotatably supported about a pivot point D.
  • the moving contact 200, 300 is pivoted about this pivot point D.
  • the power supply 250 is arranged so that it runs in the open position substantially parallel to the arc 600.
  • the power supply 250 to the moving contacts can be electrically contacted by means of a stranded wire 800 so that the current of the switching unit 1000 flows from the strand 800 to the contact piece 300.
  • the power supply 250 conducts the current substantially parallel to the arc 600. Furthermore, the power supply 250 is arranged in the immediate vicinity of the arc 600 so that the arc 600 runs as close as possible to the power supply 250. According to the presentation of the FIG. 3 This means that in an initial state, the arc 600 runs as close as possible to the insulation 700 of the switching unit 1000 and then moves in the direction of the quenching plates 500 due to the magnetic forces.
  • FIG. 4 is an alternative, but not the switching unit 1000 according to the invention shown.
  • the moving contact 200; 200 ' is translationally moved to open or close the current path.
  • the switching unit 1000 is open and no current can flow directly.
  • opening the moving contacts 200; 200 'under current flow for example in the event of a short circuit, arcs 600 occur; 600 ', on quenching plates 500; 500 'can be deleted.
  • the moving contacts 200; 200 ' are electrically and mechanically connected by means of the power supply 250.
  • the current path is such that in the open position, the current is conducted in the opposite direction to the current direction of the arc 600.
  • the power supply 250 is formed so that it the current substantially parallel to the arcs 600; 600 'directs. This ensures that the arcs 600; 600 'in the direction of the quenching plates 500; 500 'to be driven.
  • FIG. 4 Arrows indicate the current direction. Likewise, a current direction opposite to the representation is possible. As shown in FIG. 4 is the translatory movement of the moving contacts 200; 200 'one Move up or down. In the presentation of the FIG. 4 can for electrically closing the switching unit 1000, the moving contacts 200; 200 'are moved down so that the contact pieces 300; 400, 300 '; 400 'come into mechanical contact with each other.
  • the electrical switch 1500 comprises a switching unit 1000 according to the invention and a handle 1510.
  • the handle 1510 operates to close or open the current path, the switching unit 1000.
  • the handle 1510 is operated by an operator, but also a motor operator is conceivable the handle 1510 electromechanically switches.
  • the switching unit 1000 according to the invention may be located in a pile cassette 1520.
  • the electrical switch 1500 may include a plurality of pole cassettes 1520 for each one electrical pole.
  • the electrical switch 1500 may be, for example, a circuit breaker, a line switch, a motor protection switch, a contactor, a DC voltage switch or an ACB (air circuit breaker).

Landscapes

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

Claims (7)

  1. Unité de commutation (1000) pour un commutateur électrique (1500), cette unité de commutation (1000) comprenant au moins un contact fixe (100, 400; 100', 400') et un contact mobile (200, 300; 200', 300') avec alimentation en courant (250) vers le contact mobile (200, 300; 200', 300'), lesquels sont mis en contact mécanique pour la fermeture ou l'ouverture du trajet de courant l'un avec l'autre ou sont séparés l'un de l'autre mécaniquement ou magnétiquement, cette unité de commutation (1000) comprenant en outre au moins une plaque d'extinction (500), laquelle influence un arc électrique apparaissant à l'ouverture des contacts électriques (100, 400; 100', 400'; 200, 300; 200', 300'), cette alimentation en courant (250) étant réalisée de sorte qu'elle conduit, en position ouverte, le courant dans le sens contraire au sens du courant de l'arc électrique (600) le long de l'arc électrique (600),
    ce contact mobile (200, 300; 200', 300') comprenant un bras de contact (200; 200') et un plot de contact (300; 300') et l'alimentation en courant (250) étant réalisée de sorte qu'elle évolue en position ouverte de manière essentiellement parallèle à l'arc électrique,
    ce bras de contact (200) étant logé à rotation autour d'un point de rotation (D) et pivotant pour la fermeture ou l'ouverture du trajet de courant autour de ce point de rotation (D),
    caractérisée en ce que l'alimentation en courant (250) présente une section en demi-cercle qui évolue en position ouverte, de manière essentiellement parallèle à l'arc électrique (600).
  2. Unité de commutation (1000) selon la revendication 1, l'alimentation en courant (250) étant réalisée de sorte qu'en position ouverte, celle-ci conduit le courant de manière essentiellement parallèle à l'arc électrique (600).
  3. Unité de commutation (1000) selon la revendication 1, cette unité de commutation (1000) comprenant en plus une isolation (700), laquelle isole l'alimentation en courant (250) électriquement de l'arc électrique (600).
  4. Unité de commutation (1000) selon la revendication 3, l'alimentation en courant (250) étant réalisée en matériau solide et conducteur de l'électricité ou comme un cordon conducteur de l'électricité solidement intégré à l'isolation (700).
  5. Commutateur électrique (1500) comprenant une unité de commutation (1000) selon l'une des revendications précédentes et une prise (1510), cette prise (1510) actionnant l'unité de commutation (1000) pour la fermeture ou l'ouverture du trajet de courant.
  6. Commutateur électrique (1500) selon la revendication 5, dans lequel l'unité de commutation (1000) est disposée dans une cassette polaire (1520).
  7. Commutateur électrique (1500) selon la revendication 5 ou 6, ce commutateur électrique (1500) étant un sectionneur de puissance, un commutateur de ligne, un disjoncteur-protecteur, une protection, un commutateur de tension continue ou un disjoncteur à air (Angl.: ACB = air circuit breaker).
EP17178757.5A 2016-08-31 2017-06-29 Unité de circuit pour un commutateur électrique et commutateur électrique Not-in-force EP3291266B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016216392.2A DE102016216392A1 (de) 2016-08-31 2016-08-31 Schalteinheit für einen elektrischen Schalter und elektrischer Schalter

Publications (2)

Publication Number Publication Date
EP3291266A1 EP3291266A1 (fr) 2018-03-07
EP3291266B1 true EP3291266B1 (fr) 2019-06-05

Family

ID=59258099

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17178757.5A Not-in-force EP3291266B1 (fr) 2016-08-31 2017-06-29 Unité de circuit pour un commutateur électrique et commutateur électrique

Country Status (4)

Country Link
US (1) US10403458B2 (fr)
EP (1) EP3291266B1 (fr)
CN (1) CN107799339B (fr)
DE (1) DE102016216392A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110416038B (zh) * 2019-08-14 2024-06-21 西安中熔电气股份有限公司 一种可阶段性消弧的高分断快速响应的熔断器装置

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US5583328A (en) 1992-07-02 1996-12-10 Mitsubishi Denki Kabushiki Kaisha High voltage switch including U-shaped, slitted stationary contact assembly with arc extinguishing/magnetic blowout features
CN1162830A (zh) 1996-02-08 1997-10-22 易通公司 带有灭弧机构的电流转换装置
US5818003A (en) * 1996-02-08 1998-10-06 Eaton Corporation Electric switch with arc chute, radially converging arc splitter plates, and movable and stationary arc runners
DE69937107T2 (de) 1998-12-28 2008-06-12 Mitsubishi Denki K.K. Strombegrenzer und schalter mit strombegrenzungsfunktion
JP2001093395A (ja) * 1999-09-21 2001-04-06 Fuji Electric Co Ltd 回路遮断器の接触子装置
US6313425B1 (en) * 2000-02-24 2001-11-06 General Electric Company Cassette assembly with rejection features
JP3997818B2 (ja) * 2001-05-28 2007-10-24 富士電機機器制御株式会社 配線用回路しゃ断器
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KR200419048Y1 (ko) * 2006-03-17 2006-06-16 엘에스산전 주식회사 배선용 차단기
US7718908B2 (en) * 2008-10-01 2010-05-18 General Electric Company Contact arm assembly and method for assembling the contact arm assembly
FR2950475B1 (fr) * 2009-09-18 2011-09-16 Schneider Electric Ind Sas Entretoise fonctionnelle de separation des ampoules dans un dispositif de coupure multipolaire, et disjoncteur
ES2404845T3 (es) 2010-06-07 2013-05-29 Abb Schweiz Ag Aparato de conmutación de baja tensión que puede ser interrumpido fácilmente, en particular conmutador de protección de línea
CA2886423A1 (fr) * 2012-09-27 2014-04-03 Eaton Electrical Ip Gmbh & Co. Kg Disjoncteur a courant continu pourvu d'un dispositif d'extinction d'arc independant du sens du courant
CN104167340B (zh) * 2013-05-20 2017-04-26 施耐德电器工业公司 断路器
KR101513209B1 (ko) * 2013-11-08 2015-04-17 엘에스산전 주식회사 배선용 차단기
DE102014006494A1 (de) * 2014-05-06 2015-11-12 Abb Ag lnstallationsschaltgerät mit einer Kontaktstelle

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Also Published As

Publication number Publication date
CN107799339B (zh) 2019-05-21
US20180061597A1 (en) 2018-03-01
US10403458B2 (en) 2019-09-03
CN107799339A (zh) 2018-03-13
EP3291266A1 (fr) 2018-03-07
DE102016216392A1 (de) 2018-03-01

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