EP1683173B1 - Dispositif d'extinction d'arc - Google Patents

Dispositif d'extinction d'arc Download PDF

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Publication number
EP1683173B1
EP1683173B1 EP04798170A EP04798170A EP1683173B1 EP 1683173 B1 EP1683173 B1 EP 1683173B1 EP 04798170 A EP04798170 A EP 04798170A EP 04798170 A EP04798170 A EP 04798170A EP 1683173 B1 EP1683173 B1 EP 1683173B1
Authority
EP
European Patent Office
Prior art keywords
arc
conductor loop
quenching system
guide rail
current
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
EP04798170A
Other languages
German (de)
English (en)
Other versions
EP1683173A1 (fr
Inventor
Gunther Eckert
Paul Herma
Wolfgang Leitl
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 EP1683173A1 publication Critical patent/EP1683173A1/fr
Application granted granted Critical
Publication of EP1683173B1 publication Critical patent/EP1683173B1/fr
Anticipated expiration legal-status Critical
Not-in-force legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/121—Protection of release mechanisms
    • 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
    • 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

Definitions

  • the invention relates to an arc extinguishing device for a switching device.
  • Such an arc extinguishing device is used to interrupt or extinguish an arc that occurs when opening a current-carrying pair of contact pieces.
  • the current flows over smaller and smaller areas of an associated contact zone and heats them up more and more. Shortly before the actual separation of the contact pieces creates a molten bridge, which eventually breaks off at low currents or evaporated at high currents. The current can therefore continue to flow only via an arc in the form of a conductive plasma column.
  • the strength of the arc is influenced by the magnitude and type of the switched current.
  • a short circuit in a protected by a circuit breaker circuit for example, generate short-circuit currents of up to 15,000 A.
  • the high thermal load leads to harmful effects for the switch components. For example, metal and insulating parts can be damaged or destroyed by the action of arcing. Consequently, it is necessary to extinguish the arc as quickly as possible in order to minimize the thermal energy conversion.
  • a multi-pole circuit breaker which is provided in a power supply to a contact with a blowing loop for promoting the arc run;
  • the blowing loop is formed by the fact that a supply line in the arc running direction seen behind a Fixed contact piece is connected to an arc run rail having the fixed contact piece.
  • the blown loop is permanently traversed by the operating current of a circuit, which leads to an increased power loss and thus to an increased heating of the circuit breaker.
  • Increased heating requires, on the one hand, the use of more thermally stable and more expensive materials and, on the other hand, an adaptation of the thermal release, so that it can compensate the self-heating by a correspondingly larger dimensioning of the tripping path.
  • a circuit breaker with an additional blow loop is in the EP 0 009 156 A1 disclosed.
  • the circuit breaker is equipped with a forming a Blasschleife contact arrangement and an arc chamber equipped with the Blasschleife arranged at an angle parallel quenching plates and provided with arc guide rails.
  • One of the arc guide rails flanks the quenching plate stack on one side and in front of the quenching plates in the running region of the arc, a conductor piece belonging to an additional blowing loop is provided parallel to it.
  • the additional blown loop is housed in a clearance behind the one arc guide rail in a normally off circuit.
  • the part of the arc guide rail facing the contact arrangement which is used for the arc discharge, protrudes into the region of the open position of the movable contact piece, so that the additional blowing loop is activated only when the arc passes from the movable contact piece to the arc guide rail.
  • an arc quenching device in which the extinguishing effect is supported by a magnetic blowing field, which is generated by means of a blowing device.
  • a blowing device or coil can be arranged on one or on both sides of the entire chamber area, but is continuously flowed through by the switch current.
  • a current conductor track which has an electrically conductive transition to the further arc guide rail in the sense of a conductor loop and is electrically insulated from a pair of switching contact can, due to a connection-free arrangement of the conductor loop to the switching contact pair in the region of a switching chamber at commutated arc of a the switching contacts on the further arc guide rail a current driving the arc in the arc-quenching chamber are passed over the current conductor track;
  • a physical action principle is made available, according to which in opposite directions current-carrying conductor - here a first portion of the current conductor and the arc - repel and in the same direction current-carrying conductor - here a second region of the current conductor and the arc - attract. Due to the loop geometry and the arc run thereby repulsion forces and attractive forces act together on the arc and open in a higher arc acceleration in the direction of the arc quenching chamber.
  • a current conductor track is arranged on the further arc guide rail, so that with a low material input, the current caused by the current blowing effect is amplified on the arc. Accordingly, in each case a conductor loop can be arranged on both sides of the switching contact pair, which are electrically conductively connected at least at one end of the loop.
  • the conductor loop is adapted in shape and position to a switching chamber, wherein a good use of space in terms of a large effective conductor length is ensured.
  • the conductor loop extends into a region of the switching contact pair, which likewise increases the effective conductor length, in particular of a first and a second subregion of the conductor loop.
  • the two subregions each have a position that is essentially parallel to the arc, so that an optimal force effect of the mutually influencing magnetic fields is given.
  • the conductor loop extends into a region of the arc extinguishing chamber, so that the forces of attraction influencing the arc are effective into the arc extinguishing chamber.
  • the second portion of the conductor loop has a length which corresponds to the distance between the two arc guide rails to one another in the region of the arc extinguishing chamber; This promotes the force of attraction on the arc until the arc enters the arc quenching chamber.
  • the conductor loop is made in one piece, which can be benefited from a rational production;
  • the conductor loop is executable as a punched-bent part or as a flat-band bent part or as a wire-shaped part.
  • a loop end of the conductor loop extends into the region of the arc extinguishing chamber, which promotes a persistence of the arc in the arc extinguishing chamber.
  • the conductor loop is at its other end of the loop in an electrically conductive connection to a terminal, in particular to a thermal release, so that a sufficient outflow of electricity can take place.
  • the arc guide rail is funnel-shaped arranged in such a way to the other arc guide rail that an elongation of the arc is given in the direction of the arc quenching chamber and an increase in the arc voltage has the result.
  • the switching device 1 shows a section of a switching device 1 with an arc extinguishing device, which has a schematically illustrated housing 2.
  • the switching device 1 is in this case designed as a circuit breaker and includes, among others, an electromagnetic release 3, a thermal release 4 and a pair of switching contact with a fixed contact 5 and a moving contact 6.
  • the fixed contact 5 is placed on a serving as a contact carrier arc guide rail 7, the at the same time having an electrically conductive connection to a coil of the electromagnetic release 3.
  • the coil in turn leads to a connection terminal shown schematically.
  • the arc guide rail 7 leads via an adjoining yoke into an arc extinguishing chamber 8.
  • the arc guide rail 7 is designed in the area after the fixed contact 5, toward the arc extinguishing chamber 8 ohrenförmig.
  • the moving contact 6 is mounted on a movable contact arm 9 which is rotatably mounted about an axis, not shown here.
  • Both the electromagnetic release 3 and the thermal release 4 - here a bimetal - can, depending on the error, cause a pivoting of the movable contact arm 9.
  • a further spaced apart arc guide rail 10 is provided, which have the arc quenching chamber 8 in its free-erased area.
  • the two funnel-shaped arc guide rails 7.10 together serve the targeted guidance of an arc 11 as shown in FIG 2 in the arc 11 receiving arc-quenching chamber 8.
  • the switching contact pair 5.6 and the two arc guide rails 7.10 and possibly by an arc inlet zone of Arc quenching chamber 8 defined area is referred to as switching or pre-chamber 12.
  • the switching chamber 12 has inter alia a current conductor 13, which is provided with a first, second and third sub-area 13a, 13b and 13c.
  • the current conductor 13 has in its first portion 13a an electrically conductive transition to the other arc guide rail 10 in the sense of a conductor loop 10,13.
  • the conductor loop 10, 13 is adapted in shape and position to the contours of the switching chamber 12 and, if appropriate, can be partially pulled behind the arc extinguishing chamber 8 with the second subregion 13 b.
  • this can be executed as Stänz-bending part or as a flat-band bent part or as a wire-shaped part.
  • the conductor loop 10, 13 is connected at the junction according to FIG. 1 by one of several common joining methods, although the transition can also be carried out in one piece.
  • the conductor loop 10,13 protrudes connection-free, that is without touching the arc guide rail 7 or the movable contact arm 9 including the contacts 5 and 6, to the area of the switching contact pair 5.6. Also no contacting of the conductor loop 10,13 is given at its point of intersection. Accordingly, the current conductor 13 as part of the conductor loop 10, 13 runs recessed behind the pair of switching contacts 5, 6 with reference to the plane of the drawing of FIG. Of course, both sides of the switching contact pair 5.6 such a current conductor 13 on the other arc guide rail 10 can be arranged.
  • the additional current-conductor track runs relative to the plane of the drawing above the switching contact pair 5.6.
  • both sides of the pair of switching contact 5.6 is given in each case a complete conductor loop 10,13.
  • the two conductor loops 10, 13, are electrically conductively connected to a loop end, which leads to a further connection terminal.
  • the symbolized by an arrow current I is fed to the terminal.
  • the current I flows through the coil of the electromagnetic release 3 over a portion of the arc guide rail 7 to the contact zone of the switching contact pair 5.6 and from there via the movable contact arm 9 on a strand to the thermal release 4 and finally to the further connection terminal to which a consumer can be connected.
  • the switching device 1 is in addition to the execution as a circuit breaker, for example, as a circuit breaker or contactor executable.
  • FIG. 2 shows a section of the switching device 1 according to FIG. 1 with an opened switching contact pair 5, 6.
  • the contact position shown here corresponds to a tripping or fault case in which a short-circuit or overload current flows.
  • the flow of current initially corresponds to the switching contact pair 5.6 the course of FIG 1.
  • the current flows over ever smaller areas of an associated contact zone and heats it more and more.
  • Shortly before the actual separation of the contacts 5.6 creates a molten bridge, which eventually breaks off at low currents or evaporated at high currents.
  • the current I therefore continues to flow via the arc 11 in the form of a conductive plasma column.
  • the current conductor 13 is equipped with an insulating means, such as an insulating plate 14 as shown in FIG 1 and 2 or an insulating housing part, against the commutation of the arc 11 of the moving contact 6 on the current conductor 13.
  • the insulating plate 14 extends substantially over the first and second partial regions 13a and 13b of the current conductor track 13. the insulation plate 14 can be guided over the third subregion 13c of the current conductor track 13. Also, a coverage of the transition from the other arc guide rail 10 to the current conductor 13 for the deflection of the arc 11 in addition to the transition, towards the other arc guide rail 10, providable.
  • the insulation means are mutatis mutandis providable for the additional current conductor.
  • the conductor loop 10,13 is after commutation of the arc 11 during its burning time for a few milliseconds in series between the two terminals in the current path.
  • a significant reduction in the heating of the switching device 1 is achieved, so that lower requirements with respect to the compensation of the self-heating can be made to the thermal release 4.
  • the use of more favorable materials with a lower conductance, such as steel instead of copper for the conductor loop 10, 13 also has a cost-saving effect.
  • the arc 11 is magnetically influenced in the sense of bundling or steering the magnetic field.
  • the current flow direction in the first subregion 13a of the conductor loop 10, 13 is opposite to that of the electric arc 11.
  • current-carrying conductor - here arc 11 and first portion 13a - have repelling magnetic fields, whereby the arc 11 is pressed between the two arc guide rails 7,10 in the direction of the arc quenching chamber 8, since the conductor loop 10,13 stationary and rigid is executed.
  • the current flow direction in the second portion 13b of the conductor loop 10, 13 is set equal to that of the arc 11.
  • a current conductor 13 the electrically conductive transition to the other arc guide rail 10 in the sense of a conductor loop 10th , 13 and is electrically insulated from a switching contact pair 5.6, wherein the conductor loop 10,13 connectionless to the switching contact pair 5,6 and in the region of a switching chamber 12 is arranged such that when commutated arc 11 of one of the switching contacts 5; the further arc-guide rail 10 a the arc 11 in the arc-quenching chamber 8 driving current I is guided over the current-conductor track 13.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Discharge Heating (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Circuit Breakers (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (14)

  1. Dispositif d'extinction d'arc pour un appareil de commutation (1), comprenant un rail conducteur d'arc (7), qui présente un contact fixe (5) attribué à un contact mobile (6), et un autre rail conducteur d'arc (10) espacé du premier, qui sont destinés au guidage ciblé d'un arc (11) dans une chambre d'extinction d'arc (8) disposée entre les rails conducteurs d'arc (7, 10) et recevant l'arc (11), et une piste conductrice de courant (13), qui présente une transition électroconductrice avec l'autre rail conducteur d'arc (10) dans le sens d'une boucle de conducteur (10, 13) et est isolée électriquement par rapport au contact fixe (5), la boucle de conducteur (10, 13) étant disposée, sans toucher le contact fixe (5), dans une zone définie par la paire de contacts de commutation (5, 6) et par les deux rails conducteurs d'arc (7, 10) d'une chambre de commutation (12) de telle sorte qu'un courant (I) entraînant l'arc (11) dans la chambre d'extinction d'arc (8) est guidé par la piste conductrice de courant (13) uniquement lorsque l'arc (11) est commuté par le contact mobile (6) sur l'autre rail conducteur d'arc (10).
  2. Dispositif d'extinction d'arc selon la revendication 1, une piste conductrice de courant (13) étant disposée sur l'autre rail conducteur d'arc (10) des deux côtés de la paire de contacts de commutation (5, 6).
  3. Dispositif d'extinction d'arc selon la revendication 1, une boucle de conducteur (10, 13) étant disposée sur chacun des deux côtés de la paire de contacts de commutation (5, 6), lesquelles boucles sont reliées de façon électroconductrice au moins sur une extrémité de boucle.
  4. Dispositif d'extinction d'arc selon les revendications 1 à 3, la boucle de conducteur (10, 13) étant adaptée au niveau de la forme et de la position à la chambre de commutation (12).
  5. Dispositif d'extinction d'arc selon l'une quelconque des revendications précédentes, la boucle de conducteur (10, 13) s'étendant jusque dans une zone de la paire de contacts de commutation (5, 6).
  6. Dispositif d'extinction d'arc selon l'une quelconque des revendications précédentes, la boucle de conducteur (10, 13) s'étendant jusque dans une zone de la chambre d'extinction d'arc (8).
  7. Dispositif d'extinction d'arc selon l'une quelconque des revendications précédentes, la boucle de conducteur (10, 13) étant dotée d'une première zone partielle (13a) et d'une seconde zone partielle (13b), lesquelles présentent chacune en soi une position sensiblement parallèle à l'arc (11).
  8. Dispositif d'extinction d'arc selon la revendication 6, la seconde zone partielle (13b) de la boucle de conducteur (10, 13) présentant une longueur qui correspond à l'espacement des deux rails conducteurs d'arc (7, 10) dans la zone de la chambre d'extinction d'arc (8).
  9. Dispositif d'extinction d'arc selon l'une quelconque des revendications précédentes, la boucle de conducteur (10, 13) étant réalisée d'une seule pièce.
  10. Dispositif d'extinction d'arc selon l'une quelconque des revendications précédentes, la boucle de conducteur (10, 13) étant conçue comme une pièce pliée et estampée ou d'une pièce pliée à bande plate ou d'une pièce moulée en fil.
  11. Dispositif d'extinction d'arc selon l'une quelconque des revendications précédentes, la boucle de conducteur (10, 13) allant avec une extrémité de boucle jusque dans la zone de la chambre d'extinction d'arc (8).
  12. Dispositif d'extinction d'arc selon la revendication 11, la boucle de conducteur (10, 13) étant avec son autre extrémité de boucle dans une liaison électroconductrice avec une borne de raccordement, en particulier également avec un déclencheur (4) thermique.
  13. Dispositif d'extinction d'arc selon l'une quelconque des revendications précédentes, le rail conducteur d'arc (7) étant disposé en forme d'entonnoir par rapport à l'autre rail conducteur d'arc (10) de telle sorte qu'on a un allongement de l'arc (11) en direction de la chambre d'extinction d'arc (8).
  14. Appareil de commutation, en particulier appareil de commutation de protection, avec un dispositif d'extinction d'arc selon la revendication 1.
EP04798170A 2003-11-11 2004-11-05 Dispositif d'extinction d'arc Not-in-force EP1683173B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10352934A DE10352934B4 (de) 2003-11-11 2003-11-11 Lichtbogen-Löschvorrichtung
PCT/EP2004/052831 WO2005048282A1 (fr) 2003-11-11 2004-11-05 Dispositif d'extinction d'arc

Publications (2)

Publication Number Publication Date
EP1683173A1 EP1683173A1 (fr) 2006-07-26
EP1683173B1 true EP1683173B1 (fr) 2007-09-05

Family

ID=34559615

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04798170A Not-in-force EP1683173B1 (fr) 2003-11-11 2004-11-05 Dispositif d'extinction d'arc

Country Status (9)

Country Link
EP (1) EP1683173B1 (fr)
CN (1) CN100468600C (fr)
AT (1) ATE372583T1 (fr)
BR (1) BRPI0416378A (fr)
DE (2) DE10352934B4 (fr)
ES (1) ES2291956T3 (fr)
NO (1) NO331047B1 (fr)
PT (1) PT1683173E (fr)
WO (1) WO2005048282A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10600588B2 (en) 2016-07-06 2020-03-24 Siemens Aktiengesellschaft Switch having an arc-quenching device

Families Citing this family (15)

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Publication number Priority date Publication date Assignee Title
DE102007054960B3 (de) * 2007-11-17 2009-04-23 Moeller Gmbh Schaltgerät für Gleichstrom-Anwendungen
DE102007054958A1 (de) 2007-11-17 2009-06-04 Moeller Gmbh Schaltgerät für Gleichstrom-Anwendungen
DE102008015196B4 (de) * 2008-03-20 2009-11-19 Siemens Aktiengesellschaft Lichtbogen-Löschvorrichtung für ein Schaltgerät, Schaltgerät mit Lichtbogen-Löschvorrichtung sowie Verfahren zum Herstellen einer Lichtbogen -Löschvorrichtung
DE102009035299B4 (de) 2009-07-30 2013-02-14 Siemens Aktiengesellschaft Kontaktsystem und Schaltgerät
EP2561534B1 (fr) * 2010-04-19 2018-07-11 CARLING TECHNOLOGIES, Inc. Interrupteur de circuit à capacités améliorées d'extinction d'arc
EP2393096B1 (fr) * 2010-06-07 2013-02-13 ABB Schweiz AG Appareil de commutation basse tension pouvant être interrompu facilement, notamment commutateur de protection de ligne
CN102201304B (zh) * 2011-05-25 2013-01-23 常熟开关制造有限公司(原常熟开关厂） 断路器的跑弧道结构
DE102011078524A1 (de) * 2011-07-01 2013-01-03 Siemens Aktiengesellschaft Doppeltunterbrechendes Schutzschaltgerät
DE102011118968B3 (de) * 2011-11-19 2013-01-31 Abb Ag Installationsschaltgerät mit Vorkammerraum und Leitrippen
DE102012208573A1 (de) * 2012-05-22 2013-11-28 Siemens Aktiengesellschaft Lichtbogen-Löschvorrichtung und Schutzschaltgerät
DE102012212236A1 (de) * 2012-07-12 2014-01-16 Siemens Aktiengesellschaft Schutzschaltgerät und Magnetjoch
DE102013214642A1 (de) * 2013-07-26 2015-01-29 Siemens Aktiengesellschaft Schaltgerät
DE102015217704A1 (de) * 2015-09-16 2017-03-16 Siemens Aktiengesellschaft Lichtbogen-Löschvorrichtung und Schutzschaltgerät
CN109586176B (zh) * 2018-12-20 2020-12-04 乐清市鑫艺科技有限公司 一种高压变电机柜的距环弧吹装置
US10510506B1 (en) * 2019-01-31 2019-12-17 Carling Technologies, Inc. Narrow profile circuit breaker with arc interruption

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DE2841004C2 (de) * 1978-09-21 1980-10-02 Licentia Gmbh Leitungsschutzschalter mit zusätzlicher Blasschleife
FR2549638B1 (fr) * 1983-07-18 1988-11-18 Etude Realisa Disjoncteurs Sa Disjoncteur avec dispositif d'acceleration de deplacement d'arc
DE8500991U1 (de) * 1985-01-16 1986-12-04 Siemens AG, 1000 Berlin und 8000 München Mehrpoliger Leitungsschutzschalter
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DE19524915C2 (de) * 1995-07-08 2003-06-26 Abb Patent Gmbh Lichtbogenlöschanordnung für einen elektrischen Schalter, insbesondere für einen Leitungsschutzschalter
EP0980085B1 (fr) * 1998-08-13 2006-11-22 Siemens Aktiengesellschaft Disjoncteur de puissance à bobine de soufflage actionné par l'arc
DE10117346B4 (de) * 2001-04-06 2004-05-06 Siemens Ag Schutzschalter mit einer Löscheinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10600588B2 (en) 2016-07-06 2020-03-24 Siemens Aktiengesellschaft Switch having an arc-quenching device

Also Published As

Publication number Publication date
PT1683173E (pt) 2007-11-08
DE10352934B4 (de) 2005-12-22
CN1879183A (zh) 2006-12-13
ES2291956T3 (es) 2008-03-01
WO2005048282A1 (fr) 2005-05-26
DE502004004909D1 (de) 2007-10-18
BRPI0416378A (pt) 2007-03-13
NO20062712L (no) 2006-06-12
ATE372583T1 (de) 2007-09-15
DE10352934A1 (de) 2005-06-09
NO331047B1 (no) 2011-09-19
EP1683173A1 (fr) 2006-07-26
CN100468600C (zh) 2009-03-11

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