EP0709867B1 - Interrupteur électrique sous vide - Google Patents
Interrupteur électrique sous vide Download PDFInfo
- Publication number
- EP0709867B1 EP0709867B1 EP95116884A EP95116884A EP0709867B1 EP 0709867 B1 EP0709867 B1 EP 0709867B1 EP 95116884 A EP95116884 A EP 95116884A EP 95116884 A EP95116884 A EP 95116884A EP 0709867 B1 EP0709867 B1 EP 0709867B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil
- switch according
- mentioned
- branch
- 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.)
- Expired - Lifetime
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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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
- H01H33/6641—Contacts; Arc-extinguishing means, e.g. arcing rings making use of a separate coil
Definitions
- the present invention relates to an electric switch intended to ensure breaking in an electrical circuit, of the type comprising an elongated vacuum cartridge with envelope cylindrical closed by two bottoms, in which two arcing contacts are housed, one of which, fixed, is secured to one of the aforementioned funds while the other, mobile, is mounted to axial sliding inside the cartridge, and at least one coil intended to produce an axial magnetic field in the arc formation area, said coil comprising a first end electrically connected to one of the aforementioned arcing contacts and a second end arranged in the current supply range.
- a known circuit breaker (document FR-2.682.808) of the kind mentioned, comprises a ring-shaped coil placed in an annular housing formed by the bottom associated with the coil so that the latter is arranged coaxially outside the cartridge in line with the arcing contact separation interval.
- One end of the coil is mechanically and electrically connected to the fixed arcing contact, while the other end is electrically connected to a current supply range while being electrically isolated from the fixed arcing contact.
- One of the drawbacks of this type of circuit breaker is that, the coil being in series with the arcing contacts, all of the main current flows through the coil. It follows that it is necessary to provide a coil of large section, which therefore has a considerable bulk.
- the present invention solves these problems and proposes a switch, in particular under vacuum using a coil for the creation of an axial magnetic field, of simple design and reduced dimensions.
- the present invention relates to a switch of the kind previously mentioned according to claim 1.
- the coil can be constituted by one or more turns of small section.
- the bypass means comprises a resistive element.
- this resistive element comprises a resistive washer electrically connecting the two aforementioned ends of the coil.
- the aforementioned bypass means comprises a magnetic circuit.
- the magnetic circuit is placed around a conductor electrically connecting the two aforementioned ends of the coil.
- the magnetic circuit comprises at least one air gap intended delay the current bypass to a certain current intensity value main.
- the bypass in the turn is carried out from 8000A.
- the coil consists of a turn, the two of which ends each extend with an angular offset, parallel to the bottoms of the cartridge.
- the first end of the coil is secured mechanically and electrically connected to the fixed arcing contact.
- the aforementioned bypass means drifts between 10 and 60% of the current in the coil.
- the coil and the bypass means are placed inside or outside the cartridge empty.
- the coil and the bypass means are placed at inside the arcing contact between a conductive rod and an electrode of said contact.
- each of the contacts is associated with a coil and a means of bypass, which are placed inside the vacuum cartridge.
- a vacuum interrupter I mainly comprising a vacuum bulb (or cartridge) 1 and a coil 2 mounted coaxially around said bulb in a manner which will be described through the following.
- This bulb 1 includes an envelope 3 consisting of a cylindrical part 3a closed by two opposite bottoms 3b, 3c. Inside the casing 3 are arranged a fixed arcing contact 4 secured to one 3b aforementioned funds, and a movable arcing contact 5 carried by a control rod (not shown) sealingly crossing the other 3c of the two bottoms.
- Arc contacts 4, 5 are disc-shaped in a material of low resistivity.
- Coil 2 is shaped ring arranged coaxially outside the cartridge 1 in line with the interval of separation of the arcing contacts 4, 5.
- This coil 2 is constituted by a turn and comprises a first and a second end 2a, 2b each extending with an offset angular, parallel to said bottom 3b associated with the coil 2.
- the first end 2a is mechanically and electrically secured to the fixed contact 4.
- the second end 2b forms a current supply range connected to that of the circuit breaker, and is mechanically fixed to the fixed contact 4 by any suitable means, such as a screw passing through aligned holes provided in the two aforementioned ends 2a, 2b of the coil 2, and screwing into the contact fixed arc 4.
- the switch I further comprises a means M, interposed between the two aforementioned ends 2a, 2b of the coil 2, to divert part of the current from the supply range of current 2b, through coil 2, while the part complementary to the current passing through the two ends 2a, 2b and the two arcing contacts 4, 5 until the moment of switching off.
- this means M is a resistive element 6, in the form of a washer, interposed between the two ends 2a, 2b of turn 2.
- this means M is a magnetic circuit 7 arranged around a conductor 8 electrically connecting the two above mentioned ends 2a, 2b.
- This magnetic circuit 7 will advantageously include one or several air gaps depending on the desired performance.
- switch I of the invention will be briefly described below. successively in its two embodiments illustrated respectively in FIGS. 2 and 3.
- This vacuum interrupter I is particularly intended to ensure cutting in vacuum in axial field for a permanent current ranging from 630A to 3150A.
- the current bypass occurs from the start of the current flow, during the cut, and this in a linear fashion. This derivation generates an axial magnetic field in the separation zone of the arcing contacts necessary for cutting.
- this element 6 will advantageously be a washer made of a material of high resistivity (stainless steel or other).
- the magnetic circuit 7 includes an air gap and will therefore remain practically inactive up to a certain intensity value. Until this value, the current bypass through coil 2 will be weak. From this value, the magnetic circuit 7 will activate, which will cause the derivation of a certain amount of current through coil 2, this bypass creating a sufficient axial magnetic field to obtain the cut.
- this activation value of the circuit will advantageously be 8000A, value from which an axial magnetic field is necessary to obtain the break.
- the turn 2 can remain of section small compared to the cross section of the conductor 9 through which the permanent current passes, unlike solutions in which the coil 2 is connected in series with the contacts arc 4, 5 and conducts almost all of the permanent current.
- the section of coil 2 can therefore be reduced, all the more so in the event of a break, the passage time is short.
- FIG 4 illustrates a third embodiment of the invention.
- a vacuum interrupter 1 mainly comprising an insulating envelope of cylindrical shape closed by two metal bottoms 3b, 3c, and containing two contacts arc 4, 5 respectively fixed and movable extending coaxially inside said envelope.
- the two contacts 4 and 5 have the same structure and are each constituted, as this is visible in Figure 5, by a conductive rod 10 and a conductive electrode 13 with a coil 12 and a bypass means 11 between the rod and the electrode.
- this bypass means is an element resistive 11. But we could also consider interposing a means of derivation consisting of a magnetic circuit.
- the invention will be advantageously applied to electrical switches belonging to areas ranging from low voltage to very high voltage.
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Description
On connaít également le document EP 0 329 410 décrivant un dispositif comportant les caractéristiques du préambule de la revendication 1. Or, le dispositif décrit dans ce document, ne comporte pas de bobine indépendante des contacts. Le champs magnétique axial est crée par le courant circulant dans une partie annulaire formant partie intégrante du contact d'arc lui-même.
On voit déjà que grâce à l'invention, la bobine peut être constituée par une ou plusieurs spires de section faible.
Selon une première réalisation de l'invention, le moyen de dérivation comprend un élément résistif.
Elle permet en outre d'une part, d'améliorer considérablement la rigidité mécanique de l'ensemble lorsqu'appliquée dans un disjoncteur et d'autre part, de réduire les coûts de fabrication grâce à une construction des contacts particulièrement simple.
Claims (15)
- Interrupteur électrique destiné à assurer la coupure dans un circuit électrique, du genre comprenant une cartouche allongée sous vide à enveloppe cylindrique obturée par deux fonds, dans laquelle sont logés deux contacts d'arc dont l'un, fixe, est solidaire de l'un des fonds précités tandis que l'autre, mobile, est monté à coulissement axial à l'intérieur de la cartouche, et au moins une bobine destinée à produire un champ magnétique axial dans la zone de formation de l'arc, ladite bobine comprenant une première extrémité reliée électriquement à l'un des contacts d'arc précités et une seconde extrémité agencée en plage d'amenée du courant ,
caractérisé en ce que les deux extrémités précitées (2a, 2b) de la bobine (2) sont reliées électriquement et en ce qu'il comporte un moyen de dérivation (M) interposé entre les deux extrémités précitées (2a, 2b), pour dériver une partie du courant principal à travers la bobine (2) pendant la coupure, afin de créer le champ magnétique axial, tandis que la partie complémentaire du courant traverse les deux extrémités de la bobine et les deux contacts d'arc (4,5). - Interrupteur selon la revendication 1, caractérisé en ce que les deux extrémités (2a,2b) de la bobine (2) sont superposées.
- Interrupteur selon la revendication 1 ou 2, caractérisé en ce que le moyen de dérivation précité (M) comprend un élément résistif (6).
- Interrupteur selon la revendication 1 ou 2, caractérisé en ce que le moyen de dérivation précité (M) comprend un circuit magnétique (7).
- Interrupteur selon la revendication 3, caractérisé en ce que l'élément résistif (6) comprend une rondelle résistive reliant électriquement les deux extrémités précitées (2a, 2b) de la bobine (2).
- Interrupteur selon la revendication 4, caractérisé en ce que le circuit magnétique (7) est placé autour d'un conducteur (8) reliant électriquement les deux extrémités précitées (2a, 2b) de la bobine (2).
- Interrupteur selon l'une quelconque des revendications 4 et 6, caractérisé en ce que le circuit magnétique (7) comporte au moins un entrefer destiné à retarder la dérivation du courant jusqu'à une certaine valeur d'intensité de courant principal.
- Interrupteur selon la revendication 7, caractérisé en ce que la dérivation du courant (2) s'effectue à partir de 8000A.
- Interrupteur selon l'une quelconque des revendications précédentes, caractérisé en ce que la bobine (2) est constituée par une spire dont les deux extrémités (2a, 2b) s'étendent chacune avec un décalage angulaire, parallèlement aux fonds (3b, 3c) de la cartouche (1).
- Interrupteur selon l'une quelconque des revendications précédentes, caractérisé en ce que la première extrémité (2a) de la bobine (2) est solidarisée mécaniquement et reliée électriquement au contact d'arc fixe (4).
- Interrupteur selon l'une quelconque des revendications précédentes, caractérisé en ce que le moyen de dérivation (11) précité dérive entre 10 et 60% du courant dans la bobine (2).
- Interrupteur selon l'une quelconque des revendications précédentes, caractérisé en ce que la bobine (2) et le moyen de dérivation (M) sont placés à l'extérieur de la cartouche à vide (1).
- Interrupteur selon l'une quelconque des revendications 1 à 11, caractérisé en ce que la bobine (12) et le moyen de dérivation (M) sont placés à l'intérieur de la cartouche à vide (1).
- Interrupteur selon la revendication 13, caractérisé en ce que la bobine (12) et le moyen de dérivation (11) sont placés à l'intérieur du contact d'arc (4, 5) entre une tige conductrice (10) et une électrode (13) dudit contact.
- Interrupteur selon l'une quelconque des revendications précédentes, caractérisé en ce qu'à chacun des contacts (4, 5) sont associés une bobine (12) et un moyen de dérivatiaon (11) lesquels sont placés à l'intérieur de la cartouche à vide (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9413408A FR2726396B1 (fr) | 1994-10-31 | 1994-10-31 | Interrupteur electrique sous vide |
FR9413408 | 1994-10-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0709867A1 EP0709867A1 (fr) | 1996-05-01 |
EP0709867B1 true EP0709867B1 (fr) | 2001-12-05 |
Family
ID=9468630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95116884A Expired - Lifetime EP0709867B1 (fr) | 1994-10-31 | 1995-10-26 | Interrupteur électrique sous vide |
Country Status (7)
Country | Link |
---|---|
US (1) | US5861597A (fr) |
EP (1) | EP0709867B1 (fr) |
JP (1) | JPH08212881A (fr) |
CN (1) | CN1075663C (fr) |
DE (1) | DE69524363T2 (fr) |
ES (1) | ES2167397T3 (fr) |
FR (1) | FR2726396B1 (fr) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2745946B1 (fr) * | 1996-03-08 | 1998-04-17 | Schneider Electric Sa | Interrupteur ou disjoncteur electrique sous vide |
DE19809828C1 (de) * | 1998-02-27 | 1999-07-08 | Eckehard Dr Ing Gebauer | Vakuumleistungsschalter für Niederspannung |
JP2000268683A (ja) * | 1999-01-14 | 2000-09-29 | Toshiba Corp | 開閉器の操作装置 |
NL1017985C2 (nl) * | 2001-05-03 | 2002-11-05 | Holec Holland Nv | Vacuümonderbreker voorzien van een coaxiale spoel voor het opwekken van een axiaal magneetveld nabij de contactorganen van de onderbreker. |
US7488916B2 (en) * | 2005-11-14 | 2009-02-10 | Cooper Technologies Company | Vacuum switchgear assembly, system and method |
US7772515B2 (en) * | 2005-11-14 | 2010-08-10 | Cooper Technologies Company | Vacuum switchgear assembly and system |
US7781694B2 (en) * | 2007-06-05 | 2010-08-24 | Cooper Technologies Company | Vacuum fault interrupter |
US8450630B2 (en) * | 2007-06-05 | 2013-05-28 | Cooper Technologies Company | Contact backing for a vacuum interrupter |
CN102280304B (zh) * | 2011-06-17 | 2013-11-27 | 孟越峰 | 动触头组件及其应用动触头组件的电磁隔离驱动智能开关 |
CN105510815A (zh) * | 2015-11-27 | 2016-04-20 | 平高集团有限公司 | 一种故障电弧试验装置 |
WO2021255869A1 (fr) * | 2020-06-17 | 2021-12-23 | 三菱電機株式会社 | Soupape à vide |
CN113161192B (zh) * | 2021-04-22 | 2023-01-20 | 云南电网有限责任公司电力科学研究院 | 一种磁场增强型的真空断路器 |
CN113327811A (zh) * | 2021-04-22 | 2021-08-31 | 西安交通大学 | 一种振荡式直流断路器的灭弧室结构 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3366762A (en) * | 1965-04-16 | 1968-01-30 | Gen Electric | Arc controlling electrodes for switches and gaps |
FR1480001A (fr) * | 1965-05-28 | 1967-07-27 | ||
GB1163271A (en) * | 1965-08-06 | 1969-09-04 | English Electric Co Ltd | Circuit Interrupters |
NL162238C (nl) * | 1976-02-19 | 1980-04-15 | Hazemeijer Bv | Vacuumschakelaar met coaxiale magneetspoel. |
EP0055008B1 (fr) * | 1980-12-22 | 1985-12-11 | Mitsubishi Denki Kabushiki Kaisha | Interrupteur à vide |
US4717797A (en) * | 1984-12-18 | 1988-01-05 | Siemens Aktiengesellschaft | Contact arrangement for a vacuum switching tube |
US4661666A (en) * | 1985-05-28 | 1987-04-28 | Kabushiki Kaisha Meidensha | Vacuum interrupter |
US4707577A (en) * | 1986-04-05 | 1987-11-17 | Kabushiki Kaisha Meidensha | Vacuum interrupter |
US4839481A (en) * | 1988-02-16 | 1989-06-13 | Cooper Industries, Inc. | Vacuum interrupter |
DE3823297A1 (de) * | 1988-07-07 | 1989-05-11 | Slamecka Ernst | Vakuumschalter mit aeusserer axialmagnetfelderregungsvorrichtung |
DE8904071U1 (fr) * | 1989-04-03 | 1990-08-02 | Sachsenwerk Ag, 8400 Regensburg, De | |
FR2682808B1 (fr) * | 1991-10-17 | 1997-01-24 | Merlin Gerin | Disjoncteur hybride a bobine de soufflage axial. |
-
1994
- 1994-10-31 FR FR9413408A patent/FR2726396B1/fr not_active Expired - Fee Related
-
1995
- 1995-10-16 US US08/543,389 patent/US5861597A/en not_active Expired - Fee Related
- 1995-10-26 DE DE69524363T patent/DE69524363T2/de not_active Expired - Fee Related
- 1995-10-26 ES ES95116884T patent/ES2167397T3/es not_active Expired - Lifetime
- 1995-10-26 EP EP95116884A patent/EP0709867B1/fr not_active Expired - Lifetime
- 1995-10-26 JP JP7279112A patent/JPH08212881A/ja active Pending
- 1995-10-31 CN CN95118524A patent/CN1075663C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69524363T2 (de) | 2002-08-14 |
ES2167397T3 (es) | 2002-05-16 |
EP0709867A1 (fr) | 1996-05-01 |
CN1075663C (zh) | 2001-11-28 |
FR2726396B1 (fr) | 1996-12-13 |
DE69524363D1 (de) | 2002-01-17 |
JPH08212881A (ja) | 1996-08-20 |
CN1130797A (zh) | 1996-09-11 |
FR2726396A1 (fr) | 1996-05-03 |
US5861597A (en) | 1999-01-19 |
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