EP3213335B1 - Medium- or high-voltage circuit breaker or isolator, provided with improved fixed contacts, and method of use - Google Patents

Medium- or high-voltage circuit breaker or isolator, provided with improved fixed contacts, and method of use Download PDF

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Publication number
EP3213335B1
EP3213335B1 EP15787189.8A EP15787189A EP3213335B1 EP 3213335 B1 EP3213335 B1 EP 3213335B1 EP 15787189 A EP15787189 A EP 15787189A EP 3213335 B1 EP3213335 B1 EP 3213335B1
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EP
European Patent Office
Prior art keywords
switching
contact
contacts
circuit breaker
sliding surface
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EP15787189.8A
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German (de)
French (fr)
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EP3213335A1 (en
Inventor
Didier Rodrigues
Denis Frigiere
Jean Marc Willieme
Frank Jacquier
Vincent ROYOT
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General Electric Technology GmbH
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Alstom Technology AG
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    • 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
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/38—Plug-and-socket contacts
    • H01H1/385—Contact arrangements for high voltage gas blast circuit breakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00—Form of contacts
    • H01H2203/036—Form of contacts to solve particular problems
    • H01H2203/044—Form of contacts to solve particular problems to achieve a predetermined sequence of switching

Definitions

  • the subject of the present invention is a switch or a circuit breaker, at medium or high voltage, provided with improved fixed contacts, as well as the method of using this circuit breaker.
  • the switching between a closed state and an open state is effected by the displacement of a movable contact along a stroke.
  • the stationary contacts touch a sliding surface of the moving contact, and current flows from one stationary contact to another through the moving contact, until one of the stationary contacts reaches an interruption of the sliding surface and then leaves the contact.
  • the electric current is then transferred through the arcing contacts, abandoning the permanent contacts; the arc appears between the arcing contacts, at a location of the device which can be chosen to incur less damage; and it can then be blown by a stream of gas, compressed in a chamber by the movable contact stroke and then released by opening a valve, as is known.
  • the electric arc is not completely eliminated between the permanent contacts, but that a brief arc, called commutation, remains until the current flows entirely through the arcing contacts.
  • This switching arc can also damage the switchgear due to its high temperature, which can rise to a few hundred or a few. thousands of degrees, causing local melting and erosion of the contact material, and more particles being thrown around. This results in a weakening of the dielectric strength of the switchgear through solid elements or the surrounding gas and risks of current initiation and breakdowns.
  • the invention proceeds from another idea: to reduce the switching arc, as well as its effects, by dividing it in two, and by making it appear simultaneously or almost at the two fixed contacts.
  • the document JP S59 398825 U discloses an electrical apparatus according to the preamble of claim 1.
  • the documents FR 2 985 080 A1 and US 4,329,552 A disclose the principle of contacts having main part fingers and switch part fingers.
  • the invention relates, in a general form, to an electrical apparatus, switch or circuit breaker according to claim 1.
  • the fixed contacts cross the interruptions of the sliding surface together, that is to say at the same time, or with a slight time lag chosen to allow the apparatus to carry out a process of current failure where, depending on a suitable speed of the moving contact during the stroke from the closed state to the open state, simultaneous switching arcs are created between the switching parts and the interruptions of the sliding surface of the mobile contact.
  • the figure 1 schematically shows a circuit breaker according to the prior art, where a movable contact 1, in the form of a tube, slides to the left, under the action of a control mechanism, to open the circuit breaker. It has sliding surfaces, which two fixed contacts 3 and 4 touch (on the same sliding surface 2 here, which is not necessary).
  • the circuit breaker is also provided with arcing contacts 5 in mutual sliding one on the other and electrically connected to the movable contact 1 and to the first fixed contact 3.
  • the sliding surface 2 is interrupted at one end 6 of the movable contact. 1.
  • the electrical circuit controlled by the circuit breaker opens, the first fixed contact 3 is released from the moving contact 1, and a switching arc appears briefly between them, until current is established through the contacts. arcing 5.
  • the latter then also separate, after an additional travel of the movable contact 1, which actually opens the circuit breaker, while creating an arc between the arcing contacts 5, which is conventionally extinguished by blowing.
  • the fixed contacts of the invention may have the appearance shown in figure 2 . They include a main part 7, connected directly to a current transport line 8, and a switching part 9, which is an auxiliary part, also connected to this line 8, but in a way which makes it more difficult to pass the power. current.
  • the switching part 9 is welded to the line 8 by a ferrule 10 and is made of a material that is less conductive of electricity than the main part 7.
  • the parts 7 and 9 are designed to touch. the sliding surface 2 together, at a short distance from each other, when the circuit breaker is closed.
  • FIG 3 which represents an embodiment of the invention where the fixed contacts 3 and 4 have been replaced by fixed contacts 11 and 12 constructed in accordance with figure 2 .
  • the movable contact now 13, comprises an intermediate difference in level 19, an end face 20 of which constitutes another interruption of the sliding track 2, and of which the main part 7 of the second fixed contact 12 is close. It follows from this arrangement that, the circuit breaker travel continuing towards opening, the parts 7 and 9 of the fixed contacts 11 and 12 will separate. of the sliding surface 2, by crossing either the end 6 or the end face 20 of the intermediate difference in level 19.
  • the order of separation may be as follows.
  • the first part to separate will be the main part 7 of the second fixed contact 12 ( figure 4 ); then the main part 7 of the first fixed contact 11 ( figure 5 ); then the switching part 9 of the second fixed contact 12 ( figure 6 ); and finally the switching part 9 of the first fixed contact 11 ( figure 7 ).
  • the main parts 7 can separate in any order, and the switching parts 9 likewise; they can also separate simultaneously; and the states of figures 5 and 6 could occur in reverse order.
  • Curve 16 of the figure 8 represents the current produced at the circuit breaker terminals.
  • the switching arc 14 would have, in the absence of the second arc 15, an intensity decreasing in a substantially linear fashion, according to the segment 17, and is interrupted at the instant t + ⁇ t 1 , the current then being taken up by the arcing contacts 5.
  • the other switching arc 15 begins at t 0 or begins immediately after, at the instant t 0 + ⁇ t 2 ( figure 9 )
  • the segment 17, now denoted by 17 ' is interrupted and we observe that the decrease of the simultaneous arcs 14 and 15 is then much faster, according to the following segment 18, so that their extinction occurs at the instant t 0 + ⁇ t 3 , where ⁇ t 3 is less than ⁇ t 1 .
  • the duration and average intensity of the arcs, as well as the damage inflicted contacts, are then significantly reduced.
  • the same advantages remain present with the operating variants indicated above, as well as with unitary fixed contacts, such as the conventional fixed contacts 3 and 4.

Description

Le sujet de l'invention présente est un interrupteur ou un disjoncteur, à moyenne ou haute tension, pourvu de contacts fixes améliorés, ainsi que le procédé d'utilisation de ce disjoncteur.The subject of the present invention is a switch or a circuit breaker, at medium or high voltage, provided with improved fixed contacts, as well as the method of using this circuit breaker.

Dans un tel appareillage, la commutation entre un état fermé et un état ouvert s'effectue par le déplacement d'un contact mobile le long d'une course. Les contacts fixes touchent une surface de glissement du contact mobile, et le courant circule d'un contact fixe à l'autre à travers le contact mobile, jusqu'à ce qu'un des contacts fixes atteigne une interruption de la surface de glissement et quitte alors le contact.In such an apparatus, the switching between a closed state and an open state is effected by the displacement of a movable contact along a stroke. The stationary contacts touch a sliding surface of the moving contact, and current flows from one stationary contact to another through the moving contact, until one of the stationary contacts reaches an interruption of the sliding surface and then leaves the contact.

Il est connu qu'un arc électrique se forme alors entre le contact mobile et le contact fixe isolé. Cet arc électrique a des effets néfastes, notamment en produisant des arrachements de particules conductrices et donc une érosion des contacts entre lesquels il s'étend, ainsi qu'une altération de l'atmosphère environnante. C'est pourquoi, très fréquemment, on adjoint aux contacts fixes dits permanents, décrits jusqu'ici, d'autres contacts appelés contacts d'arc, qui se touchent pendant le début de la course vers l'état ouvert et se séparent seulement après les contacts permanents. Le courant électrique est alors transféré à travers les contacts d'arc, en abandonnant les contacts permanents ; l'arc apparaît entre les contacts d'arc, à un endroit du dispositif qui peut être choisi pour faire encourir des dommages moins importants ; et il peut ensuite être soufflé par un courant de gaz, comprimé dans une chambre par la course de contact mobile puis relâché par l'ouverture d'une valve, ainsi qu'il est connu.It is known that an electric arc then forms between the movable contact and the isolated fixed contact. This electric arc has harmful effects, in particular by producing tearing of conductive particles and therefore an erosion of the contacts between which it extends, as well as an alteration of the surrounding atmosphere. This is why, very frequently, we add to the so-called permanent fixed contacts, described so far, other contacts called arcing contacts, which touch each other during the start of the stroke towards the open state and separate only afterwards. permanent contacts. The electric current is then transferred through the arcing contacts, abandoning the permanent contacts; the arc appears between the arcing contacts, at a location of the device which can be chosen to incur less damage; and it can then be blown by a stream of gas, compressed in a chamber by the movable contact stroke and then released by opening a valve, as is known.

Si l'addition des contacts d'arcs est bénéfique, il faut souligner que l'arc électrique n'est pas complètement éliminé entre les contacts permanents, mais qu'il subsiste un arc bref, dit de commutation, jusqu'à ce que le courant passe entièrement par les contacts d'arc. Cet arc de commutation peut lui aussi endommager l'appareillage à cause de sa température élevée, pouvant s'élever à quelques centaines ou quelques milliers de degrés, produire une fusion locale et une érosion de la matière des contacts, et encore des projections de particules aux alentours. Il en résulte un affaiblissement de la tenue diélectrique de l'appareillage à travers les éléments solides ou le gaz environnant et des risques d'amorçages de courant et de claquages. C'est pourquoi, dans la demande de brevet français enregistrée sous le numéro de publication 3001575, on a imaginé de construire le contact mobile en deux parties séparées par de l'isolant, et un des contacts fixes en une partie principale et une partie auxiliaire. Le courant passe par la partie principale du contact fixe pendant le service normal, mais l'arc de commutation s'étend à partir de la partie auxiliaire. L'intérêt de ce dispositif est que le lieu d'apparition de l'arc de commutation peut être assez isolé pour qu'il crée des dommages moins importants, sans réduire toutefois l'arc lui-même.If the addition of the arcing contacts is beneficial, it should be noted that the electric arc is not completely eliminated between the permanent contacts, but that a brief arc, called commutation, remains until the current flows entirely through the arcing contacts. This switching arc can also damage the switchgear due to its high temperature, which can rise to a few hundred or a few. thousands of degrees, causing local melting and erosion of the contact material, and more particles being thrown around. This results in a weakening of the dielectric strength of the switchgear through solid elements or the surrounding gas and risks of current initiation and breakdowns. This is why, in the French patent application registered under the publication number 3001575, it was imagined to construct the movable contact in two parts separated by the insulation, and one of the fixed contacts in a main part and an auxiliary part. . Current flows through the main part of the fixed contact during normal service, but the switching arc extends from the auxiliary part. The advantage of this device is that the place of occurrence of the switching arc can be isolated enough so that it creates less damage, without however reducing the arc itself.

Il serait encore concevable d'appliquer les techniques de soufflage d'arc aux arcs de commutation, mais cela n'est pas toujours commode, ni permis par tous les appareillages; et l'utilisation d'un gaz de coupure diélectrique, impliquant la fermeture hermétique de l'appareillage, est souvent nécessaire alors.It would still be conceivable to apply arc blowing techniques to switching arcs, but this is not always convenient, nor allowed by all the devices; and the use of a dielectric cutoff gas, involving hermetic closing of the apparatus, is often necessary then.

L'invention procède d'une autre idée : diminuer l'arc de commutation, ainsi que ses effets, en le partageant en deux, et en le faisant apparaître simultanément ou presque aux deux contacts fixesThe invention proceeds from another idea: to reduce the switching arc, as well as its effects, by dividing it in two, and by making it appear simultaneously or almost at the two fixed contacts.

Le document JP S59 398825 U divulgue un appareillage électrique selon le préambule de la revendication 1. Les documents FR 2 985 080 A1 et US 4 329 552 A divulguent le principe de contacts ayant des doigts de partie principale et des doigts de parties de commutation.The document JP S59 398825 U discloses an electrical apparatus according to the preamble of claim 1. The documents FR 2 985 080 A1 and US 4,329,552 A disclose the principle of contacts having main part fingers and switch part fingers.

L'invention est relative, sous une forme générale, à un appareillage électrique, interrupteur ou disjoncteur-selon la revendication 1.The invention relates, in a general form, to an electrical apparatus, switch or circuit breaker according to claim 1.

En d'autres termes, les contacts fixes franchissent ensemble les interruptions de la surface de glissement, c'est-à-dire en même temps, ou avec un léger décalage de temps choisi pour permettre à l'appareillage d'effectuer un procédé de coupure de courant où, en fonction d'une vitesse convenable du contact mobile pendant la course de l'état fermé à l'état ouvert, des arcs de commutation simultanés sont créés entre les parties de commutation et les interruptions de la surface de glissement du contact mobile.In other words, the fixed contacts cross the interruptions of the sliding surface together, that is to say at the same time, or with a slight time lag chosen to allow the apparatus to carry out a process of current failure where, depending on a suitable speed of the moving contact during the stroke from the closed state to the open state, simultaneous switching arcs are created between the switching parts and the interruptions of the sliding surface of the mobile contact.

Ce partage de l'arc de commutation entre les deux contacts fixes favorise son extinction rapide, et réduit ainsi le dégagement de chaleur qu'il produit et les dégâts aux contacts permanents. Ici encore, la condition à respecter est que les contacts fixes se déconnectent ensemble, simultanément ou presque, du contact mobile en franchissant une dénivellation de celui-ci.This sharing of the switching arc between the two fixed contacts favors its rapid extinction, and thus reduces the release of heat which it produces and the damage to the permanent contacts. Here again, the condition to be respected is that the contacts fixed disconnects together, simultaneously or almost, from the mobile contact by crossing a difference in level thereof.

L'invention sera maintenant décrite de façon plus détaillée, en liaison aux figures suivantes :

  • la figure 1 est une vue d'un disjoncteur à haute ou moyenne tension conforme à l'art antérieur ;
  • la figure 2 illustre des contacts fixes permanents utilisables pour l'invention ;
  • les figures 3, 4, 5, 6 et 7 détaillent les étapes de commutation, de la fermeture à l'ouverture, d'une réalisation de l'invention ;
  • et les figures 8 et 9 représentent le déroulement d'extinction de l'arc de commutation.
The invention will now be described in more detail, with reference to the following figures:
  • the figure 1 is a view of a high or medium voltage circuit breaker according to the prior art;
  • the figure 2 illustrates permanent fixed contacts that can be used for the invention;
  • the figures 3, 4 , 5, 6 and 7 detail the switching steps, from closing to opening, of an embodiment of the invention;
  • and the figures 8 and 9 represent the extinction sequence of the switching arc.

La figure 1 représente schématiquement un disjoncteur conforme à l'art antérieur, où un contact mobile 1, en forme de tube, coulisse vers la gauche, sous l'action d'un mécanisme de commande, pour ouvrir le disjoncteur. Il comporte des surfaces de glissement, que touchent deux contacts fixes 3 et 4 (sur la même surface de glissement 2 ici, ce qui n'est pas nécessaire). Le disjoncteur est aussi pourvu de contacts d'arc 5 en glissement mutuel l'un sur l'autre et reliés électriquement au contact mobile 1 et au premier contact fixe 3. La surface de glissement 2 s'interrompt à une extrémité 6 du contact mobile 1. Quand le circuit électrique commandé par le disjoncteur s'ouvre, le premier contact fixe 3 se libère du contact mobile 1, et un arc de commutation apparaît brièvement entre eux, jusqu'à ce que le courant s'établisse à travers les contacts d'arc 5. Ces derniers se séparent ensuite eux aussi, après une course supplémentaire du contact mobile 1, ce qui ouvre véritablement le disjoncteur, tout en créant un arc entre les contacts d'arc 5, qui est éteint classiquement par un soufflage.The figure 1 schematically shows a circuit breaker according to the prior art, where a movable contact 1, in the form of a tube, slides to the left, under the action of a control mechanism, to open the circuit breaker. It has sliding surfaces, which two fixed contacts 3 and 4 touch (on the same sliding surface 2 here, which is not necessary). The circuit breaker is also provided with arcing contacts 5 in mutual sliding one on the other and electrically connected to the movable contact 1 and to the first fixed contact 3. The sliding surface 2 is interrupted at one end 6 of the movable contact. 1. When the electrical circuit controlled by the circuit breaker opens, the first fixed contact 3 is released from the moving contact 1, and a switching arc appears briefly between them, until current is established through the contacts. arcing 5. The latter then also separate, after an additional travel of the movable contact 1, which actually opens the circuit breaker, while creating an arc between the arcing contacts 5, which is conventionally extinguished by blowing.

Les contacts fixes de l'invention peuvent avoir l'aspect représenté à la figure 2. Ils comprennent une partie principale 7, reliée directement à une ligne 8 de transport du courant, et une partie de commutation 9, qui est une partie auxiliaire, elle aussi reliée à cette ligne 8, mais d'une façon qui laisse plus difficilement passer le courant. La partie de commutation 9 est soudée à la ligne 8 par un embout 10 et est construite en un matériau moins bon conducteur de l'électricité que la partie principale 7. Les parties 7 et 9 sont conçues pour toucher la surface de glissement 2 ensemble, à peu de distance l'une de l'autre, quand le disjoncteur est fermé.The fixed contacts of the invention may have the appearance shown in figure 2 . They include a main part 7, connected directly to a current transport line 8, and a switching part 9, which is an auxiliary part, also connected to this line 8, but in a way which makes it more difficult to pass the power. current. The switching part 9 is welded to the line 8 by a ferrule 10 and is made of a material that is less conductive of electricity than the main part 7. The parts 7 and 9 are designed to touch. the sliding surface 2 together, at a short distance from each other, when the circuit breaker is closed.

On se reporte à la figure 3, qui représente une réalisation de l'invention où les contacts fixes 3 et 4 ont été remplacés par des contacts fixes 11 et 12 construits conformément à la figure 2. On a représenté un état de commutation assez proche de l'ouverture, où la partie principale 7 du premier contact fixe 11 est située non loin de l'extrémité 6, la partie de commutation 9 étant un peu plus éloignée. Le contact mobile, maintenant 13, comprend une dénivellation intermédiaire 19, dont une face d'extrémité 20 constitue une autre interruption de la piste de glissement 2, et dont la partie principale 7 du second contact fixe 12 est proche.
Il résulte de cet agencement que, la course du disjoncteur se poursuivant vers l'ouverture, les parties 7 et 9 des contacts fixes 11 et 12 se sépareront de la surface de glissement 2, en franchissant soit l'extrémité 6, soit la face d'extrémité 20 de la dénivellation intermédiaire 19. L'ordre de séparation pourra être le suivant.We refer to the figure 3 , which represents an embodiment of the invention where the fixed contacts 3 and 4 have been replaced by fixed contacts 11 and 12 constructed in accordance with figure 2 . There is shown a switching state quite close to opening, where the main part 7 of the first fixed contact 11 is located not far from the end 6, the switching part 9 being a little further away. The movable contact, now 13, comprises an intermediate difference in level 19, an end face 20 of which constitutes another interruption of the sliding track 2, and of which the main part 7 of the second fixed contact 12 is close.
It follows from this arrangement that, the circuit breaker travel continuing towards opening, the parts 7 and 9 of the fixed contacts 11 and 12 will separate. of the sliding surface 2, by crossing either the end 6 or the end face 20 of the intermediate difference in level 19. The order of separation may be as follows.

La première partie à se séparer sera la partie principale 7 du second contact fixe 12 (figure 4) ; puis la partie principale 7 du premier contact fixe 11 (figure 5) ; puis la partie de commutation 9 du second contact fixe 12 (figure 6) ; et enfin la partie de commutation 9 du premier contact fixe 11 (figure 7). Certaines variantes de fonctionnement sont toutefois acceptées. C'est ainsi que les parties principales 7 peuvent se séparer dans un ordre quelconque, et les parties de commutation 9 de même ; elles peuvent aussi se séparer simultanément; et les états des figures 5 et 6 pourraient survenir dans l'ordre inverse.The first part to separate will be the main part 7 of the second fixed contact 12 ( figure 4 ); then the main part 7 of the first fixed contact 11 ( figure 5 ); then the switching part 9 of the second fixed contact 12 ( figure 6 ); and finally the switching part 9 of the first fixed contact 11 ( figure 7 ). However, certain operating variants are accepted. Thus, the main parts 7 can separate in any order, and the switching parts 9 likewise; they can also separate simultaneously; and the states of figures 5 and 6 could occur in reverse order.

Aux séparations des parties 7 et 9 des contacts 11 et 12, les courants passent par les parties de commutation 9 quand les parties principales 7 sont séparées du contact mobile 1, et des arcs de commutation 14 et 15 apparaissent quand les parties de commutation 9 se séparent du contact mobile 1. Il est conforme à l'invention que les arcs de commutation 14 et 15 subsistent simultanément pendant un instant, ce que représente la figure 7, pour les raisons qu'on va maintenant détailler au moyen des dernières figures. Cela est dû à la séparation simultanée ou quasi simultanée des contacts fixes 11 et 12, qui franchissent l'extrémité 6 et la face d'extrémité 20 à un intervalle de temps avantageusement inférieur à une demi-période du courant, grâce à une vitesse adaptée de déplacement du contact mobile 1.At the separations of the parts 7 and 9 of the contacts 11 and 12, the currents flow through the switching parts 9 when the main parts 7 are separated from the movable contact 1, and switching arcs 14 and 15 appear when the switching parts 9 are separated. separate from the movable contact 1. It is in accordance with the invention that the switching arcs 14 and 15 remain simultaneously for an instant, which is represented by figure 7 , for the reasons which will now be detailed by means of the last figures. This is due to the simultaneous or almost simultaneous separation of the fixed contacts 11 and 12, which cross the end 6 and the end face 20 at a time interval advantageously less than half a period of the current, thanks to a suitable speed. of moving contact 1.

La courbe 16 de la figure 8 représente le courant produit aux bornes du disjoncteur. Quand l'état de la figure 6 est atteint, à l'instant t0, l'arc de commutation 14 aurait, en l'absence du second arc 15, une intensité décroissant de façon sensiblement linéaire, selon le segment 17, et s'interrompt à l'instant t + Δt1, le courant étant ensuite repris par les contacts d'arc 5. Mais si, conformément à l'invention, l'autre arc de commutation 15 commence à t0 ou commence immédiatement après, à l'instant t0 + Δt2 (figure 9), le segment 17, maintenant noté 17', s'interrompt et on observe que la décroissance des arcs 14 et 15 simultanés est ensuite beaucoup plus rapide, selon le segment 18 suivant, de sorte que leur extinction arrive à l'instant t0 + Δt3, où Δt3 est inférieur à Δt1. La durée et l'intensité moyenne des arcs, ainsi que les dommages infligés aux contacts, sont alors nettement réduits. Les mêmes avantages restent présents avec les variantes de fonctionnement indiquées plus haut, de même qu'avec des contacts fixes unitaires, tels que les contacts fixes 3 et 4 classiques.Curve 16 of the figure 8 represents the current produced at the circuit breaker terminals. When the state of the figure 6 is reached, at the instant t 0 , the switching arc 14 would have, in the absence of the second arc 15, an intensity decreasing in a substantially linear fashion, according to the segment 17, and is interrupted at the instant t + Δt 1 , the current then being taken up by the arcing contacts 5. But if, in accordance with the invention, the other switching arc 15 begins at t 0 or begins immediately after, at the instant t 0 + Δt 2 ( figure 9 ), the segment 17, now denoted by 17 ', is interrupted and we observe that the decrease of the simultaneous arcs 14 and 15 is then much faster, according to the following segment 18, so that their extinction occurs at the instant t 0 + Δt 3 , where Δt 3 is less than Δt 1 . The duration and average intensity of the arcs, as well as the damage inflicted contacts, are then significantly reduced. The same advantages remain present with the operating variants indicated above, as well as with unitary fixed contacts, such as the conventional fixed contacts 3 and 4.

Claims (3)

  1. Electric circuit breaker or isolator equipment, comprising a mobile contact (13) provided with a switching course from a closed state to an open state of the equipment and a sliding surface (2), a first fixed contact (11) and a second fixed contact (12) touching the sliding surface; a first break (6) of the sliding surface, crossed by the first fixed contact (11) during the switching course; where the sliding surface has a second break (20) crossed by the second fixed contact (12) during the switching course, essentially at the same time as the first break is crossed by the first contact, characterised in that each of the fixed contacts comprises a main part (7) and a switching part (9), the main part and the switching part being electrically connected, touching both the sliding surface (2), but being arranged such that the electricity passes preferably through the main part between the fixed contact and the mobile contact; and in that, for each of the fixed contacts, the main part reaches the break of the sliding surface before the switching part; the main part (7) and the switching part (9) being welded to one another and made of different materials, the material of the switching part (9) being less conductive of electricity than that of the main part (7).
  2. Electric circuit breaker or isolator equipment according to claim 1, characterised in that it is medium- or high-voltage.
  3. Electric circuit breaker or isolator equipment according to claim 2, characterised in that it also comprises arcing contacts (5) mutually sliding over one another, respectively connected to the mobile contact (13) and to one of the fixed contacts (11), and which are separated from one another after the fixed contacts are separated from the mobile contact.
EP15787189.8A 2014-10-30 2015-10-28 Medium- or high-voltage circuit breaker or isolator, provided with improved fixed contacts, and method of use Active EP3213335B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1460427A FR3028089B1 (en) 2014-10-30 2014-10-30 MEDIUM OR HIGH VOLTAGE SWITCH OR CIRCUIT BREAKER WITH ENHANCED FIXED CONTACTS AND METHOD OF USE
PCT/EP2015/074976 WO2016066682A1 (en) 2014-10-30 2015-10-28 Medium- or high-voltage circuit breaker or isolator, provided with improved fixed contacts, and method of use

Publications (2)

Publication Number Publication Date
EP3213335A1 EP3213335A1 (en) 2017-09-06
EP3213335B1 true EP3213335B1 (en) 2021-06-16

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EP15787189.8A Active EP3213335B1 (en) 2014-10-30 2015-10-28 Medium- or high-voltage circuit breaker or isolator, provided with improved fixed contacts, and method of use

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US (1) US10056209B2 (en)
EP (1) EP3213335B1 (en)
JP (1) JP6786483B2 (en)
FR (1) FR3028089B1 (en)
WO (1) WO2016066682A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5939825U (en) * 1982-09-08 1984-03-14 株式会社東芝 switchgear

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1955490U (en) * 1966-12-16 1967-02-16 Continental Elektro Ind Ag ELECTRICAL LOAD OR CIRCUIT BREAKER.
US4329552A (en) * 1980-04-23 1982-05-11 Gould Inc. Wire formed interleaved spring contact structure
FR2596578B1 (en) * 1986-03-28 1994-05-06 Merlin Et Gerin ELECTRIC CIRCUIT BREAKER WITH SELF-EXPANSION AND ROTATING ARC
DE59009511D1 (en) * 1990-03-28 1995-09-14 Siemens Ag Quick switch.
DE19517615A1 (en) * 1995-05-13 1996-11-14 Abb Research Ltd Circuit breaker
JP4174094B2 (en) * 1998-01-29 2008-10-29 株式会社東芝 Gas circuit breaker
DE19816507A1 (en) * 1998-04-14 1999-10-21 Asea Brown Boveri Burn-up switching arrangement
US6448519B1 (en) * 2000-03-20 2002-09-10 General Electric Company Contact system arrangement for plug-in circuit breakers and base
KR100351300B1 (en) * 2000-09-27 2002-09-05 엘지산전 주식회사 Hybrid arc extinguishing apparatus for circuit breaker
US8319136B2 (en) * 2010-06-29 2012-11-27 Schneider Electric USA, Inc. Arcing fault and arc flash protection system having a high-speed switch
CN103201809B (en) * 2011-01-07 2016-05-04 三菱电机株式会社 Opening and closing device
FR2985080A1 (en) * 2011-12-21 2013-06-28 Alstom Technology Ltd Electric connection assembly for use in e.g. high voltage circuit breaker, has cylindrical electrically conducting part comprising switching finger exceeding main contact finger at distance not to contact switching finger
ES2638877T3 (en) * 2012-03-06 2017-10-24 Abb Technology Ag Arc jump circuit breaker and circuit interruption procedure
FR2999331B1 (en) 2012-12-12 2019-05-31 Alstom Technology Ltd IMPROVED CURRENT CUTTING APPARATUS
FR3001575B1 (en) 2013-01-29 2015-03-20 Alstom Technology Ltd CIRCUIT BREAKER WITH MEANS REDUCING THE ARC SWITCH BETWEEN PERMANENT CONTACTS
DE102013223632A1 (en) * 2013-11-20 2015-05-21 Siemens Aktiengesellschaft Switching arrangement and method for mounting a switching arrangement

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5939825U (en) * 1982-09-08 1984-03-14 株式会社東芝 switchgear

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JP6786483B2 (en) 2020-11-18
US10056209B2 (en) 2018-08-21
FR3028089A1 (en) 2016-05-06
US20170316904A1 (en) 2017-11-02
EP3213335A1 (en) 2017-09-06
WO2016066682A1 (en) 2016-05-06
JP2017539049A (en) 2017-12-28
FR3028089B1 (en) 2016-12-30

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