WO2014108558A1 - Breaker having a rotating-arc contact - Google Patents

Breaker having a rotating-arc contact Download PDF

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Publication number
WO2014108558A1
WO2014108558A1 PCT/EP2014/050588 EP2014050588W WO2014108558A1 WO 2014108558 A1 WO2014108558 A1 WO 2014108558A1 EP 2014050588 W EP2014050588 W EP 2014050588W WO 2014108558 A1 WO2014108558 A1 WO 2014108558A1
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WO
WIPO (PCT)
Prior art keywords
contact
contacts
arc
rotation
arcing
Prior art date
Application number
PCT/EP2014/050588
Other languages
French (fr)
Inventor
Mathieu Bernard
Frédéric Roussel
Original Assignee
Alstom Technology Ltd
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 Alstom Technology Ltd filed Critical Alstom Technology Ltd
Priority to CN201480004605.6A priority Critical patent/CN104919557B/en
Priority to JP2015552089A priority patent/JP2016507128A/en
Priority to KR1020157021703A priority patent/KR20150105986A/en
Priority to EP14700483.2A priority patent/EP2943967B1/en
Publication of WO2014108558A1 publication Critical patent/WO2014108558A1/en

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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/32—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with rectilinearly-movable contact
    • 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
    • H01H33/666—Operating arrangements

Definitions

  • the present invention relates to the field of electrical switchgear, in particular the type of disconnector or earthing switch, preferably high voltage. Even more preferentially, the invention relates to a high-voltage disconnector of the GIS (gas insulated switchgear) type, that is to say located in a metal or shielded casing with electrical insulation conferred by gas. SF6 or equivalent.
  • GIS gas insulated switchgear
  • an electrical switchgear of the disconnector or earthing switch type comprises an electrically conductive assembly which is moved at a constant translational speed during each opening operation and during each closing operation.
  • the conductor assembly which is generally equipped with a permanent contact and an arcing contact, undergoes mechanical and electrical stresses that gradually generate its degradation. This phenomenon is also observed on the other permanent contact and on the other arcing contact of the apparatus, said fixed contacts.
  • the document FR 2 547 107 proposes an electrical apparatus with a fixed arc contact coupled to a spring, which makes it possible to accelerate the spacing speed of the two arcing contacts at the moment of their separation. .
  • the fixed arcing contact can no longer really be regarded as fixed, since it is slidably mounted on the fixed frame of the apparatus.
  • conventional designs of switchgear usually do not monitor the area of the fixed contact, so that the detection of a possible anomaly on the spring is not possible. This seems unacceptable, as a failure of the undetected spring would cause a dangerous malfunction of the switchgear.
  • the presence of permanent magnets to operate the system is likely to generate electromagnetic disturbances which are of course not desirable.
  • the object of the invention is therefore to remedy at least partially the disadvantages mentioned above, relating to the embodiments of the prior art.
  • the subject of the invention is an electrical switchgear, in particular a disconnector, according to claim 1.
  • the proposed solution is first of all advantageous in that it allows, by relative rotation of the two arcing contacts, to stretch the electric arc occurring between them during an opening operation. This stretch promotes the extinction of the arc, and also distributes the electrical wear on these arcing contacts. The adverse effects of repeated arc flash formation between the arcing contacts are therefore largely attenuated, and the lifetime of these contacts is advantageously improved.
  • the invention is remarkable in that it makes it possible to vary the speed of said arcing contact of the moving assembly, during the same opening operation, by means of the acceleration caused by the release of energy from the elastic return means. Consequently, this controlled variation can be determined in such a way as to best limit the mechanical and electrical wear of the electrically conductive assembly.
  • the release of energy is preferentially initiated after the separation of the permanent contacts, and during the separation of the arcing contacts, that is to say initiated at the precise moment of the separation of the contacts. arcs or before that moment, and completed after they are separated.
  • the speed of the moving arc contact embossed on the electrically conductive assembly is even higher during this critical phase of the opening operation, which limits the damage due to electrical stresses.
  • this improvement is added to that described above, conferred by the rotational nature of the moving arc contact.
  • This feature of the invention is also advantageous in that it allows a variation of the speed of said arc contact of the moving assembly, while moving at a constant speed of translation the point of attachment of a device. training of the mobile unit electrically conductive. Consequently, this driving device can advantageously integrate a motor driven at constant speed, even if a variable speed could be implemented, without departing from the scope of the invention.
  • the acceleration spring is not arranged on the fixed elements side, but on the assembly comprising the mobile electrodes.
  • the acceleration spring is not arranged on the fixed elements side, but on the assembly comprising the mobile electrodes.
  • this preferred solution makes it possible to reduce the overall size of the apparatus compared to those encountered in the prior art.
  • the modification made to the fixed contact to make it slightly mobile causes a significant increase in the dimensioning, especially for purposes of translational guidance of this contact.
  • the impact on the dimensioning is much smaller because this assembly already has a bulk important, including a significant length to ensure its guidance in translation.
  • the speed of the electrically conductive assembly can be slow, until the separation of the permanent contacts in order to limit the mechanical wear of these, then rise to limit the electrical wear of the arcing contacts.
  • said rotation means are designed to initiate the relative rotation of the two arcing contacts during the separation of the arcing contacts, that is to say at the precise instant of the separation of the contacts. arcs or before that moment.
  • the design of the apparatus is retained so that the rotation is stopped at a time following that of the extinction of the electric arc.
  • this primer takes place preferably after the start of the opening operation, and that the rotation is stopped before the end of this same operation.
  • the relative rotation takes place over a period corresponding to a few milliseconds over a total opening stroke duration of approximately 10s, and / or over a distance corresponding to one third of the total stroke of the moving assembly during the opening operation.
  • the design of the apparatus is such that no rotation occurs during the closing operations.
  • said rotating means are designed so that the relative angular position between the two arcing contacts differs between that adopted in a closed position of the arcing contacts, and that adopted in the position of closing of the cycle directly consecutive.
  • the equipment may be designed so that the angular extent of the relative rotation after each cycle is such that 360 is not a multiple of the value of this extent.
  • the relative position between the two arcing contacts is not the same as that adopted at the beginning of the previous round.
  • This angular extent is preferably identical to each cycle.
  • the relative rotation between the arcing contacts can be obtained by rotating the two contacts, or only one of them, that it is movable in translation or fixed.
  • said elastic return means comprise at least one compression or traction spring.
  • said rotation means are designed to apply a relative rotation of the two arcing contacts only during the energy release phase of said elastic return means, and even more preferably during a very large part of this phase of release of energy.
  • said other body of the electrically conductive assembly is intended to be connected to a point of attachment of a driving device of said movable electrically conductive assembly.
  • said other body comprises the permanent electrical contact.
  • said rotation means comprise a finger system housed in a helical groove, said relative rotation of the two arc contacts being operated automatically by moving the finger in the helical groove, during sliding between said other body and the movable arcing contact, during the energy release phase of said elastic return means.
  • this principle provides a simple and effective solution for converting the sliding motion of the moving arc contact into a helical motion, including the desired rotation of the arc contact.
  • This principle of finger and helical groove, or the like is moreover applicable even when the apparatus does not have a system enabling the acceleration of the moving arcing contact.
  • said system also comprises a ring surrounding the movable arcing contact, said ring being integral with the end of the finger opposite to that housed in said groove made in said other body.
  • said ring is connected to the movable arcing contact so that when it is rotated in a first direction of rotation, it carries with it the arcing contact in rotation along the central axis, and so that when it is rotated in a second direction of rotation opposite to the first, it causes no rotation of the arc contact.
  • the apparatus comprises abutment means making it possible, during an opening operation, to block the translational movement of said movable arcing contact with respect to a fixed body of the apparatus, and said other body is provided with unlocking means adapted to release said abutment means after said other body has been moved relative to the movable arcing contact, by a predetermined distance.
  • said abutment means comprise a first abutment integral with said movable arcing contact, as well as a second abutment mounted on said fixed body of the apparatus.
  • said second stop is an integral part of a trigger pivotally mounted on said fixed body, the unlocking means of said other body being intended to rotate this trigger to release said first and second stops.
  • the subject of the invention is also a method for implementing an opening operation using an apparatus as described above, the method being such that at least after the separation of the two electrical arcing contacts, these are rotated relative to each other along their central axis.
  • Figures 1 to 5 show a disconnector according to a preferred embodiment of the present invention, in different configurations successively adopted during an opening operation.
  • this disconnector may be an earthing switch, preferably a high voltage disconnector type GIS .
  • the disconnector 1 comprises a cutoff chamber 2 shown only partially, enclosed in an enclosure containing an insulating gas such as SF6 gas or any other gaseous mixture deemed appropriate.
  • the chamber 2 encloses a stationary permanent contact (not shown), as well as a fixed arcing contact 5a partially shown, intended to be located radially inwardly with respect to the permanent contact.
  • This assembly 6 contains an electrically conductive moving assembly 6, connected to a fixed body 8 in which it is movable in translation, in a direction of displacement represented by the arrow 11.
  • This assembly 6 has an end equipped with a movable permanent contact 4b in the form of a tube, and also comprises a moving electric arc contact 5b arranged radially inwardly with respect to the permanent contact 4b. These two contacts 4b, 5b are intended to cooperate with the aforementioned fixed contacts.
  • the assembly 6 generally takes the form of a sliding cylinder, like the piston of a jack, in a cylindrical housing 10 of the body 8.
  • the permanent contact 4b forms the outer body of the assembly, and is extended by a conductive cylinder 13 of smaller diameter through which the arc contact 5b also passes.
  • the electrically conductive assembly 6 comprises elastic return means, such as a compression spring 16, forcing the contact 5b arc to move towards a first end position relative to the permanent contact 5b, corresponding to the position in which it is located at most in the cylinders of the permanent contact 4b, as shown on Figures la and lb.
  • This first position towards which the spring 16 tends to push the arc contact 5b, thus corresponds to a position in which this contact is in the bottom of the opening bore 12.
  • the spring 16 disposed around the arc contact 5b is supported at one of its ends on a flange 18 of this contact, and is supported at the other of its ends on a ring 20 fixedly mounted in the boring opening 12 of the cylinder 13. More specifically, the flange 18 is formed on a support 15 of the arc contact 5b carrying the rod 17 of the same contact.
  • the support is cylindrical with a diameter substantially identical to that of the bore 12, so as to allow the translational guidance of the entire arc contact 5b in the cylinder 13 of the permanent contact 4b.
  • this support 15 linearly guides freely allowing the contact rod 17 to pivot, along the central axis 19 of the arc contacts also corresponding to the central axis of the assembly of this disconnector.
  • the permanent contact 4b moves in the direction 11 in the direction of opening, leading to the separation of the electrical contacts, it transmits this movement to the arc contact 5b through the reaction of the compression spring 16 on the ring 20.
  • the 4b permanent contact moves in the direction of closing in the direction of closure, leading to a ruzement of the electrical contacts, it transmits this movement in contact with the arc 5b by pressing its end into the bottom of the bore 12, or through the support of rods in the bottom of corresponding grooves, as shown in Figure la.
  • the arc contact holder 15 fixedly supports two diametrically opposed rods 21, at the end of each of which is placed a roller 23 forming a stop.
  • the rods 21 pass respectively through the grooves 25 formed through the cylinder 13 of the permanent contact 4b, along the direction 11. In the closed position shown in FIG. 1a, as well as throughout the closing operation which precedes the obtaining of this position, the rods 21 are supported in the bottom of the grooves 25, thus allowing the drive in translation of the contact 5b by the contact 4b.
  • this contact in order to put the permanent contact 4b in motion, in order to implement the opening and closing operations of the disconnector, this contact is connected at its rear end to a point of attachment 22 of a device.
  • This device 30 diagrammatically shown in FIG. 1b can be produced in a conventional manner, for example in such a way as to apply a constant translational speed to the point of attachment 22, in the direction 11, during each closing operation and each operation. 'opening.
  • the disconnector is also equipped with a trigger 34 pivotally mounted on the fixed body 8, along an axis of articulation 36 orthogonal to the axis 19. At its end opposite the articulation, the trigger has two stops 38.
  • stop means jointly with the rollers 23, the latter constituting the first stops, and the abutments 38 forming second stops.
  • the stops 23, 38 are opposite and aligned in pairs in the direction 11.
  • the stops are spaced from each other, and do not cooperate with each other.
  • these stops are caused to temporarily cooperate in pairs during a specific phase of the opening operation, before a bead 40 provided on the rear end of the cylinder 13 does not rotate the trigger 34 by pressing on a bar 42 thereof, to release and the first and second stops 23, 38.
  • the bead 40 therefore performs a function of unlocking the stop means.
  • the disconnector is equipped with a system 50 allowing automatic and controlled rotation of the arc contact 5b, and more precisely of its rod. 17 according to the axis 19.
  • the system 50 comprises firstly a ring 52 integral in translation with the rod 17 which it surrounds. In addition, it is integral in rotation of the same rod, but only in one of the two directions of rotation. Therefore, in a first direction of rotation of the ring 52 along the axis 19, this ring carries with it the arc contact rod, while in the other direction of rotation, the ring 52 rotates but the rod 17 remains fixed in rotation.
  • the ring 52 centered on the axis 19 fixedly bears a finger 54 oriented radially, whose free end, opposite to that integral with the ring 52, is housed in a helical groove 56 of axis 19 formed through the cylinder 13.
  • This groove 56 is initiated at the diameter break 44, and extends rearwardly then being slightly extended by a small straight portion parallel to the direction 11.
  • the stops 23, 38 come into contact in pairs and lead to blocking the translation movement of the arc contact 5b relative to the fixed body 8, while the translational movement of the permanent contact 4b is continued always under the action of the driving device.
  • the spring 16 is strongly compressed, because the arc contact 5b is temporarily blocked in translation relative to the permanent contact 4b, as shown in Figure 2a.
  • the arc contact 5b therefore remains a motionless moment in translation, without being driven by the permanent contact 4b which continues its course.
  • the state represented in FIG. 2a shows that the finger 54 bears against the front end of the helical groove 56, and / or bears against the diameter break 44 of the permanent contact.
  • the arc contact 5b largely protruding relative to the permanent contact as shown in FIG. 2b, adopts a second position reached after the permanent contact 4b has been displaced by a determined distance from the contact 5b.
  • the bead 40 of the cylinder 13 bears on the rod 42 of the trigger 34 and causes the latter to pivot about the axis 36, as has been illustrated in FIG. 3.
  • the second stops 38 release the first stops 23, and make free the arc contact 5b which is then moved at a very high speed in the direction 11, under the effect of the energy release of the spring 16 .
  • FIG. 4a shows a part of the disconnector during the phase of displacement of the finger 54 in the groove 56.
  • the release of energy from the spring and the rotation of the arcing contact are performed simultaneously, preferably during the separation of the arcing contacts, that is, they are initiated at the precise instant of the separation of the contacts of arcs or before this same instant.
  • the rotation is stopped slightly before the end of the energy release phase, and more precisely stopped when the finger 54 enters the straight extension of the groove 56, in the configuration shown in Figure 4b.
  • the disconnector 1 is designed so that at this moment of end of rotation, the electric arc is already off.
  • the arc contact 5b After this opening phase, the arc contact 5b has been moved in rotation relative to its initially occupied position in the closed position.
  • the angular extent of this rotation is for example between 92 and 100 ° in the solution shown, and is more generally greater than a quarter turn. Therefore, since the next closing operation causes no rotation of the arc contact 5b, the latter is then returned to the closed position in an angular position distinct from that adopted in the previous cycle.

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  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

The invention relates to electrical cutoff equipment (1), particularly a breaker, including two electrical arc contacts (5a, 5b) designed to be moved from a closed position to an open position, during an opening operation, by means of relative translational movement along a central axis (19) of said arc contacts. According to the invention, the equipment additionally comprises means (54, 56) for rotation that enable the arc contacts (5a, 5b) to be rotated relative to one another along the central axis (19), at least after separating the arc contacts during an opening operation.

Description

SECTIONNEUR A CONTACT D'ARC ROTATIF  ROTATING ARC CONTACT DISCONNECT
DESCRIPTION DESCRIPTION
DOMAINE TECHNIQUE La présente invention se rapporte au domaine des appareillages électriques de coupure, en particulier du type sectionneur ou sectionneur de terre, de préférence haute tension. Encore plus préférentiellement , l'invention concerne un sectionneur haute tension du type GIS (de l'acronyme anglais « Gas Insulated Switchgear ») , c'est-à-dire se trouvant sous enveloppe métallique ou blindée avec un isolement électrique conféré par du gaz SF6 ou équivalent. TECHNICAL FIELD The present invention relates to the field of electrical switchgear, in particular the type of disconnector or earthing switch, preferably high voltage. Even more preferentially, the invention relates to a high-voltage disconnector of the GIS (gas insulated switchgear) type, that is to say located in a metal or shielded casing with electrical insulation conferred by gas. SF6 or equivalent.
ÉTAT DE LA TECHNIQUE ANTÉRIEURE Classiquement et de façon connue de l'homme du métier, un appareillage électrique de coupure du type sectionneur ou sectionneur de terre comporte un ensemble électriquement conducteur qui est déplacé à vitesse de translation constante durant chaque opération d'ouverture et durant chaque opération de fermeture . STATE OF THE PRIOR ART Conventionally and in a manner known to those skilled in the art, an electrical switchgear of the disconnector or earthing switch type comprises an electrically conductive assembly which is moved at a constant translational speed during each opening operation and during each closing operation.
Au cours de ces opérations effectuées à répétition, l'ensemble conducteur, qui est généralement équipé d'un contact permanent et d'un contact d'arc électrique, subit des sollicitations mécaniques et électriques qui engendrent progressivement sa dégradation. Ce phénomène s'observe également sur l'autre contact permanent et sur l'autre contact d'arc électrique de l'appareillage, dits contacts fixes. Ces problèmes génèrent la création de particules, de la pollution, de l' échauffement, et affectent la durée de vie de l'appareillage électrique. During these repeated operations, the conductor assembly, which is generally equipped with a permanent contact and an arcing contact, undergoes mechanical and electrical stresses that gradually generate its degradation. This phenomenon is also observed on the other permanent contact and on the other arcing contact of the apparatus, said fixed contacts. These problems generate the creation of particles, pollution, overheating, and affect the life of the electrical equipment.
En particulier, lors d'une opération d'ouverture, si la vitesse de l'ensemble électriquement conducteur est trop rapide, elle entraîne une usure mécanique des contacts permanents. Cela pourrait inciter à réduire la vitesse de l'ensemble électriquement conducteur, mais il se produirait en contrepartie une usure électrique des contacts d'arc, en raison de la formation d'un arc électrique entre ceux-ci durant les opérations d'ouverture, notamment en cas de transfert de jeu de barres.  In particular, during an opening operation, if the speed of the electrically conductive assembly is too fast, it causes mechanical wear of the permanent contacts. This could be an incentive to reduce the speed of the electrically conductive assembly, but in return there would be an electrical wear of the arcing contacts, due to the formation of an electric arc between them during the opening operations, especially in case of busbar transfer.
Pour tenter de résoudre ce problème, le document FR 2 547 107 propose un appareillage électrique avec un contact d' arc fixe couplé à un ressort, qui permet d'accélérer la vitesse d'écartement des deux contacts d'arc au moment de leur séparation. Néanmoins, le contact d'arc fixe ne peut plus réellement être considéré comme fixe, puisqu'il est monté à coulissement sur le bâti fixe de l'appareillage. D'autre part, les conceptions conventionnelles des appareillages électriques de coupure ne permettent généralement pas de surveiller la zone du contact fixe, de sorte que la détection d'une éventuelle anomalie sur le ressort n'est pas envisageable. Cela parait rédhibitoire, car une cassure du ressort non détectée provoquerait un disfonctionnement dangereux de l'appareillage de coupure. En outre, la présence d'aimants permanents pour faire fonctionner le système est susceptible de générer des perturbations électromagnétiques qui ne sont bien entendu pas souhaitables. In an attempt to solve this problem, the document FR 2 547 107 proposes an electrical apparatus with a fixed arc contact coupled to a spring, which makes it possible to accelerate the spacing speed of the two arcing contacts at the moment of their separation. . Nevertheless, the fixed arcing contact can no longer really be regarded as fixed, since it is slidably mounted on the fixed frame of the apparatus. On the other hand, conventional designs of switchgear usually do not monitor the area of the fixed contact, so that the detection of a possible anomaly on the spring is not possible. This seems unacceptable, as a failure of the undetected spring would cause a dangerous malfunction of the switchgear. In addition, the presence of permanent magnets to operate the system is likely to generate electromagnetic disturbances which are of course not desirable.
Enfin, le couplage du ressort au contact fixe nécessite une augmentation sensible de l'encombrement de la zone, ce qui se traduit par un accroissement pénalisant l'encombrement global de l'appareillage électrique de coupure, qui est pourtant un critère jugé primordial sur les appareillages actuels .  Finally, the coupling of the spring to the fixed contact requires a significant increase in the size of the area, which results in an increase penalizing the overall size of the electrical switchgear, which is nevertheless a criterion considered essential on the current equipment.
Il existe donc un besoin d'optimisation de ces appareillages de coupure, en particulier pour réduire les effets néfastes liés à la formation à répétition d'arcs électriques entre les contacts d'arc, durant les opérations d'ouverture.  There is therefore a need for optimization of these switchgear devices, in particular to reduce the adverse effects associated with the formation of arcing between arcing contacts during opening operations.
EXPOSÉ DE L' INVENTION STATEMENT OF THE INVENTION
L' invention a donc pour but de remédier au moins partiellement aux inconvénients mentionnés ci- dessus, relatifs aux réalisations de l'art antérieur. The object of the invention is therefore to remedy at least partially the disadvantages mentioned above, relating to the embodiments of the prior art.
Pour ce faire, l'invention a pour objet un appareillage électrique de coupure en particulier un sectionneur, selon la revendication 1.  To do this, the subject of the invention is an electrical switchgear, in particular a disconnector, according to claim 1.
La solution proposée est tout d' abord avantageuse en ce qu'elle permet, par rotation relative des deux contacts d'arc, d'étirer l'arc électrique se produisant entre ces derniers lors d'une opération d'ouverture. Cet étirement favorise l'extinction de l'arc, et permet également de répartir l'usure électrique sur ces contacts d'arc. Les effets néfastes liés à la formation à répétition d'arcs électriques entre les contacts d'arc sont par conséquent largement atténués, et la durée de vie de ces contacts s'en trouve avantageusement améliorée. The proposed solution is first of all advantageous in that it allows, by relative rotation of the two arcing contacts, to stretch the electric arc occurring between them during an opening operation. This stretch promotes the extinction of the arc, and also distributes the electrical wear on these arcing contacts. The adverse effects of repeated arc flash formation between the arcing contacts are therefore largely attenuated, and the lifetime of these contacts is advantageously improved.
De plus, l'invention est remarquable en ce qu'elle permet de faire varier la vitesse dudit contact d'arc de l'ensemble mobile, au cours d'une même opération d'ouverture, par le biais de l'accélération provoquée par la libération d'énergie des moyens élastiques de rappel. Par conséquent, cette variation maîtrisée peut être déterminée de manière à limiter au mieux les usures mécanique et électrique de l'ensemble électriquement conducteur. A cet égard, la libération d'énergie est préférentiellement amorcée après la séparation des contacts permanents, et pendant la séparation des contacts d'arc électrique, c'est-à-dire amorcée à l'instant précis de la séparation des contacts d'arcs ou avant ce même instant, et achevée après qu'ils soient séparés. De ce fait, la vitesse du contact d'arc mobile embraqué sur l'ensemble électriquement conducteur est encore plus élevée durant cette phase critique de l'opération d'ouverture, ce qui limite les dégradations dues aux sollicitations électriques. Bien entendu, cette amélioration s'ajoute à celle décrite ci-dessus, conférée par le caractère rotatif du contact d'arc mobile.  In addition, the invention is remarkable in that it makes it possible to vary the speed of said arcing contact of the moving assembly, during the same opening operation, by means of the acceleration caused by the release of energy from the elastic return means. Consequently, this controlled variation can be determined in such a way as to best limit the mechanical and electrical wear of the electrically conductive assembly. In this respect, the release of energy is preferentially initiated after the separation of the permanent contacts, and during the separation of the arcing contacts, that is to say initiated at the precise moment of the separation of the contacts. arcs or before that moment, and completed after they are separated. As a result, the speed of the moving arc contact embossed on the electrically conductive assembly is even higher during this critical phase of the opening operation, which limits the damage due to electrical stresses. Of course, this improvement is added to that described above, conferred by the rotational nature of the moving arc contact.
Cette particularité de l'invention est également avantageuse en ce sens qu'elle permet une variation de la vitesse dudit contact d' arc de l'ensemble mobile, tout en déplaçant à vitesse de translation constante le point d'attache d'un dispositif d'entraînement de l'ensemble mobile électriquement conducteur. Par conséquent, ce dispositif d'entraînement peut avantageusement intégrer un moteur piloté à vitesse constante, même si une vitesse variable pourrait être mise en œuvre, sans sortir du cadre de l'invention. This feature of the invention is also advantageous in that it allows a variation of the speed of said arc contact of the moving assembly, while moving at a constant speed of translation the point of attachment of a device. training of the mobile unit electrically conductive. Consequently, this driving device can advantageously integrate a motor driven at constant speed, even if a variable speed could be implemented, without departing from the scope of the invention.
Par ailleurs, contrairement à la solution décrite dans le document FR 2 547 107, le ressort d'accélération n'est pas agencé du côté des éléments fixes, mais sur l'ensemble comprenant les électrodes mobiles. Ainsi, en retenant cet emplacement spécifique, il est possible de s'affranchir du problème de détection d'une éventuelle anomalie sur le ressort, tel que rencontré dans l'art antérieur. Il est en effet bien plus aisé de surveiller une éventuelle cassure du ressort lorsqu'il se trouve sur l'ensemble mobile conducteur, que lorsqu' il se trouve à proximité des éléments fixes. En outre, aucun aimant permanent n'est requis comme dans la solution du document FR 2 547 107.  Moreover, unlike the solution described in document FR 2 547 107, the acceleration spring is not arranged on the fixed elements side, but on the assembly comprising the mobile electrodes. Thus, by retaining this specific location, it is possible to overcome the problem of detecting a possible anomaly on the spring, as encountered in the prior art. It is indeed much easier to monitor a possible breakage of the spring when it is on the moving mobile assembly, than when it is close to the fixed elements. In addition, no permanent magnet is required as in the solution of the document FR 2 547 107.
Enfin, cette solution préférentielle permet de réduire l'encombrement global de l'appareillage par rapport à ceux rencontrés dans l'art antérieur. Effectivement, dans l'art antérieur, la modification apportée au contact fixe pour le rendre légèrement mobile entraîne une augmentation sensible du dimensionnement , notamment pour des besoins de guidage en translation de ce contact. En revanche, lorsque l'élément accéléré est agencé du côté des électrodes / conducteurs mobiles, sur l'ensemble conducteur, l'impact sur le dimensionnement est largement plus faible car cet ensemble dispose déjà d'un encombrement important, notamment une longueur importante pour assurer son guidage en translation. Finally, this preferred solution makes it possible to reduce the overall size of the apparatus compared to those encountered in the prior art. Indeed, in the prior art, the modification made to the fixed contact to make it slightly mobile causes a significant increase in the dimensioning, especially for purposes of translational guidance of this contact. On the other hand, when the accelerated element is arranged on the side of the moving electrodes / conductors, on the conductive assembly, the impact on the dimensioning is much smaller because this assembly already has a bulk important, including a significant length to ensure its guidance in translation.
A titre d'exemple, à l'aide des moyens élastiques précités, lors de la phase initiale d'une opération d'ouverture, la vitesse de l'ensemble électriquement conducteur peut être lente, jusqu'à la séparation des contacts permanents afin de limiter l'usure mécanique de ceux-ci, puis s'élever ensuite pour limiter l'usure électrique des contacts d'arc.  By way of example, with the aid of the aforementioned elastic means, during the initial phase of an opening operation, the speed of the electrically conductive assembly can be slow, until the separation of the permanent contacts in order to limit the mechanical wear of these, then rise to limit the electrical wear of the arcing contacts.
De préférence, lesdits moyens de mise en rotation sont conçus pour amorcer la rotation relative des deux contacts d' arc pendant la séparation des contacts d'arc électrique, c'est-à-dire amorcée à l'instant précis de la séparation des contacts d'arcs ou bien avant ce même instant. De plus, la conception de l'appareillage est retenue de sorte que la rotation soit stoppée à un instant suivant celui de l'extinction de l'arc électrique.  Preferably, said rotation means are designed to initiate the relative rotation of the two arcing contacts during the separation of the arcing contacts, that is to say at the precise instant of the separation of the contacts. arcs or before that moment. In addition, the design of the apparatus is retained so that the rotation is stopped at a time following that of the extinction of the electric arc.
De manière plus générale, il est noté que cette amorce a lieu préférentiellement après le début de l'opération d'ouverture, et que la rotation est stoppée avant la fin de cette même opération. Typiquement, la rotation relative s'effectue sur une durée correspondant à quelques millisecondes sur une durée totale de course d'ouverture d'environ 10s, et/ou sur une distance correspondant à un tiers de la course totale de l'ensemble mobile lors de l'opération d'ouverture. De plus, de préférence, la conception de l'appareillage est telle qu'aucune rotation ne se produit durant les opérations de fermeture. De préférence, lesdits moyens de mise en rotation sont conçus de manière à ce que la position angulaire relative entre les deux contacts d' arc électrique diffère entre celle adoptée dans une position de fermeture des contacts d'arc, et celle adoptée dans la position de fermeture du cycle directement consécutif. Cela permet de répartir davantage l'usure électrique sur les contacts d'arc, dont la durée de vie est encore améliorée. A titre indicatif, l'appareillage peut être conçu de sorte que l'étendue angulaire de la rotation relative après chaque cycle est telle que 360 n'est pas un multiple de la valeur de cette étendue. Avec un tel principe, après un tour complet de rotation relative entre les contacts d'arc, généralement obtenu après plusieurs cycles, la position relative entre les deux contacts d'arc n'est pas la même que celle adoptée au début du tour précédent. Cette étendue angulaire est de préférence identique à chaque cycle. More generally, it is noted that this primer takes place preferably after the start of the opening operation, and that the rotation is stopped before the end of this same operation. Typically, the relative rotation takes place over a period corresponding to a few milliseconds over a total opening stroke duration of approximately 10s, and / or over a distance corresponding to one third of the total stroke of the moving assembly during the opening operation. In addition, preferably, the design of the apparatus is such that no rotation occurs during the closing operations. Preferably, said rotating means are designed so that the relative angular position between the two arcing contacts differs between that adopted in a closed position of the arcing contacts, and that adopted in the position of closing of the cycle directly consecutive. This further distributes the electrical wear on the arcing contacts, the life of which is further improved. As an indication, the equipment may be designed so that the angular extent of the relative rotation after each cycle is such that 360 is not a multiple of the value of this extent. With such a principle, after a complete revolution of relative rotation between the arcing contacts, generally obtained after several cycles, the relative position between the two arcing contacts is not the same as that adopted at the beginning of the previous round. This angular extent is preferably identical to each cycle.
II est noté que la rotation relative entre les contacts d'arc peut être obtenue en faisant tourner les deux contacts, ou bien seulement l'un d'entre eux, que celui-ci soit mobile en translation ou fixe. Les modes de réalisation préférés présentés ci-dessous portent néanmoins uniquement sur le cas d'un unique contact d'arc mobile en rotation, qui est ici le contact d'arc mobile en translation.  It is noted that the relative rotation between the arcing contacts can be obtained by rotating the two contacts, or only one of them, that it is movable in translation or fixed. The preferred embodiments presented below, however, relate solely to the case of a single rotating mobile arcing contact, which is here the movable translational arc contact.
De préférence, lesdits moyens élastiques de rappel comprennent au moins un ressort de compression ou de traction. De préférence, lesdits moyens de mise en rotation sont conçus pour appliquer une rotation relative des deux contacts d' arc seulement durant la phase de libération d'énergie desdits moyens élastiques de rappel, et encore plus préférentiellement durant une très grande partie de cette phase de libération d' énergie . Preferably, said elastic return means comprise at least one compression or traction spring. Preferably, said rotation means are designed to apply a relative rotation of the two arcing contacts only during the energy release phase of said elastic return means, and even more preferably during a very large part of this phase of release of energy.
De préférence, ledit autre corps de l'ensemble électriquement conducteur est destiné à être relié à un point d'attache d'un dispositif d'entraînement dudit ensemble mobile électriquement conducteur .  Preferably, said other body of the electrically conductive assembly is intended to be connected to a point of attachment of a driving device of said movable electrically conductive assembly.
De préférence, ledit autre corps comporte le contact électrique permanent.  Preferably, said other body comprises the permanent electrical contact.
De préférence, lesdits moyens de mise en rotation comportent un système de doigt logé dans une rainure hélicoïdale, ladite rotation relative des deux contacts d'arc s' opérant de manière automatique par déplacement du doigt dans la rainure hélicoïdale, durant le coulissement entre ledit autre corps et le contact d'arc mobile, au cours de la phase de libération d'énergie desdits moyens élastiques de rappel. Ainsi, ce principe offre une solution simple et efficace permettant de convertir le mouvement de coulissement du contact d'arc mobile en un mouvement hélicoïdal, incluant la rotation désirée du contact d'arc. Ce principe de doigt et rainure hélicoïdale, ou similaire, est par ailleurs applicable même lorsque l'appareillage ne présente pas de système permettant l'accélération du contact d'arc mobile. De préférence, ledit système comporte également une bague entourant le contact d'arc mobile, ladite bague étant solidaire de l'extrémité du doigt opposée à celle logée dans ladite rainure pratiquée dans ledit autre corps. Preferably, said rotation means comprise a finger system housed in a helical groove, said relative rotation of the two arc contacts being operated automatically by moving the finger in the helical groove, during sliding between said other body and the movable arcing contact, during the energy release phase of said elastic return means. Thus, this principle provides a simple and effective solution for converting the sliding motion of the moving arc contact into a helical motion, including the desired rotation of the arc contact. This principle of finger and helical groove, or the like, is moreover applicable even when the apparatus does not have a system enabling the acceleration of the moving arcing contact. Preferably, said system also comprises a ring surrounding the movable arcing contact, said ring being integral with the end of the finger opposite to that housed in said groove made in said other body.
De préférence, ladite bague est reliée au contact d'arc mobile de manière à ce que lorsqu'elle est mise en rotation dans un premier sens de rotation, elle entraîne avec elle le contact d'arc en rotation selon l'axe central, et de manière à ce que lorsqu'elle est mise en rotation dans un second sens de rotation opposé au premier, elle n'entraîne aucune rotation du contact d'arc.  Preferably, said ring is connected to the movable arcing contact so that when it is rotated in a first direction of rotation, it carries with it the arcing contact in rotation along the central axis, and so that when it is rotated in a second direction of rotation opposite to the first, it causes no rotation of the arc contact.
De préférence, l'appareillage comporte des moyens de butée permettant, au cours d'une opération d'ouverture, de bloquer le mouvement de translation dudit contact d'arc mobile par rapport à un corps fixe de l'appareillage, et ledit autre corps est équipé de moyens de déverrouillage conçus pour libérer lesdits moyens de butée après que cet autre corps ait été déplacé relativement au contact d'arc mobile, selon une distance prédéterminée.  Preferably, the apparatus comprises abutment means making it possible, during an opening operation, to block the translational movement of said movable arcing contact with respect to a fixed body of the apparatus, and said other body is provided with unlocking means adapted to release said abutment means after said other body has been moved relative to the movable arcing contact, by a predetermined distance.
De préférence, lesdits moyens de butée comportent une première butée solidaire dudit contact d'arc mobile, ainsi qu'une seconde butée montée sur ledit corps fixe de l'appareillage. Dans ce cas de figure, il est préférentiellement fait en sorte que ladite seconde butée fasse partie intégrante d'une gâchette montée pivotante sur ledit corps fixe, les moyens de déverrouillage dudit autre corps étant destinés à faire pivoter cette gâchette afin de libérer lesdites première et seconde butées. Preferably, said abutment means comprise a first abutment integral with said movable arcing contact, as well as a second abutment mounted on said fixed body of the apparatus. In this case, it is preferable that said second stop is an integral part of a trigger pivotally mounted on said fixed body, the unlocking means of said other body being intended to rotate this trigger to release said first and second stops.
Enfin, l'invention a également pour objet un procédé de mise en œuvre d'une opération d'ouverture à l'aide d'un appareillage tel que décrit ci-dessus, le procédé étant tel qu'au moins après la séparation des deux contacts d'arc électrique, ceux-ci sont mis en rotation l'un par rapport à l'autre selon leur axe central .  Finally, the subject of the invention is also a method for implementing an opening operation using an apparatus as described above, the method being such that at least after the separation of the two electrical arcing contacts, these are rotated relative to each other along their central axis.
D'autres avantages et caractéristiques de l'invention apparaîtront dans la description détaillée non limitative ci-dessous.  Other advantages and features of the invention will become apparent in the detailed non-limiting description below.
BRÈVE DESCRIPTION DES DESSINS BRIEF DESCRIPTION OF THE DRAWINGS
Cette description sera faite au regard des dessins annexés parmi lesquels ; This description will be made with reference to the appended drawings among which;
les figures la à 5 représentent un sectionneur selon un mode de réalisation préféré de la présente invention, dans différentes configurations adoptées successivement au cours d'une opération d'ouverture.  Figures 1 to 5 show a disconnector according to a preferred embodiment of the present invention, in different configurations successively adopted during an opening operation.
EXPOSÉ DÉTAILLÉ DE MODES DE RÉALISATION PARTICULIERS  DETAILED PRESENTATION OF PARTICULAR EMBODIMENTS
En référence tout d'abord aux figures la et lb, il est représenté une partie d'un sectionneur selon un mode de réalisation préféré de l'invention, ce sectionneur pouvant être un sectionneur de terre, de préférence un sectionneur haute tension du type GIS. Referring firstly to Figures 1a and 1b, there is shown a part of a disconnector according to a preferred embodiment of the invention, this disconnector may be an earthing switch, preferably a high voltage disconnector type GIS .
Le sectionneur 1 comprend une chambre de coupure 2 montrée uniquement partiellement, enfermée dans une enceinte contenant un gaz isolant tel que du gaz SF6 ou tout autre mélange gazeux réputé approprié. La chambre 2 renferme un contact permanent fixe (non représenté), ainsi qu'un contact fixe d'arc électrique 5a montré partiellement, destiné à être situé radialement vers l'intérieur par rapport au contact permanent. The disconnector 1 comprises a cutoff chamber 2 shown only partially, enclosed in an enclosure containing an insulating gas such as SF6 gas or any other gaseous mixture deemed appropriate. The chamber 2 encloses a stationary permanent contact (not shown), as well as a fixed arcing contact 5a partially shown, intended to be located radially inwardly with respect to the permanent contact.
En outre, elle renferme un ensemble mobile électriquement conducteur 6, relié à un corps fixe 8 dans lequel il est mobile à translation, selon une direction de déplacement représentée par la flèche 11. Cet ensemble 6 présente une extrémité équipée d'un contact permanent mobile 4b en forme de tube, et comporte également un contact mobile d'arc électrique 5b disposé radialement vers l'intérieur par rapport au contact permanent 4b. Ces deux contacts 4b, 5b sont destinés à coopérer avec les contacts fixes précités.  In addition, it contains an electrically conductive moving assembly 6, connected to a fixed body 8 in which it is movable in translation, in a direction of displacement represented by the arrow 11. This assembly 6 has an end equipped with a movable permanent contact 4b in the form of a tube, and also comprises a moving electric arc contact 5b arranged radially inwardly with respect to the permanent contact 4b. These two contacts 4b, 5b are intended to cooperate with the aforementioned fixed contacts.
L'ensemble 6 prend globalement la forme d'un cylindre mobile à coulissement , comme le piston d'un vérin, dans un logement cylindrique 10 du corps 8. Le contact permanent 4b forme le corps extérieur de l'ensemble, et se prolonge par un cylindre conducteur 13 de plus petit diamètre à travers lequel passe également le contact d'arc 5b.  The assembly 6 generally takes the form of a sliding cylinder, like the piston of a jack, in a cylindrical housing 10 of the body 8. The permanent contact 4b forms the outer body of the assembly, and is extended by a conductive cylinder 13 of smaller diameter through which the arc contact 5b also passes.
C'est à l'intérieur de ce cylindre arrière 13 du contact permanent 4b qu'est pratiqué un alésage débouchant 12 orienté selon la direction 11, et logeant à coulissement le contact d'arc 5b. Ainsi, ce dernier est monté mobile à coulissement relativement au contact permanent selon la direction de déplacement 11.  It is inside this rear cylinder 13 of the permanent contact 4b is practiced a through bore 12 oriented in the direction 11, and slidingly housing the arc contact 5b. Thus, the latter is slidably mounted relative to the permanent contact in the direction of movement 11.
De plus, l'ensemble électriquement conducteur 6 comporte des moyens élastiques de rappel, tel qu'un ressort de compression 16, forçant le contact d'arc 5b à se déplacer en direction d'une première position d'extrémité par rapport au contact permanent 5b, correspondant à la position dans laquelle il se situe rentré au maximum dans les cylindres du contact permanent 4b, tel que cela est montré sur les figures la et lb. Cette première position, vers laquelle le ressort 16 tend à pousser le contact d'arc 5b, correspond donc à une position dans laquelle ce contact se trouve dans le fond de l'alésage débouchant 12. In addition, the electrically conductive assembly 6 comprises elastic return means, such as a compression spring 16, forcing the contact 5b arc to move towards a first end position relative to the permanent contact 5b, corresponding to the position in which it is located at most in the cylinders of the permanent contact 4b, as shown on Figures la and lb. This first position, towards which the spring 16 tends to push the arc contact 5b, thus corresponds to a position in which this contact is in the bottom of the opening bore 12.
Pour ce faire, le ressort 16 disposé autour du contact d'arc 5b prend appui à l'une de ses extrémités sur une collerette 18 de ce contact, et prend appui à l'autre de ses extrémités sur une bague 20 montée fixement dans l'alésage débouchant 12 du cylindre 13. Plus précisément, la collerette 18 est pratiquée sur un support 15 du contact d'arc 5b portant la tige 17 de ce même contact. Le support est cylindrique de diamètre sensiblement identique à celui de l'alésage 12, de manière à permettre le guidage en translation de l'ensemble du contact d'arc 5b dans le cylindre 13 du contact permanent 4b. De plus, ce support 15 guide linéairement en laissant librement pivoter la tige de contact 17, selon l'axe central 19 des contacts d'arc correspondant également à l'axe central de l'ensemble de ce sectionneur.  To do this, the spring 16 disposed around the arc contact 5b is supported at one of its ends on a flange 18 of this contact, and is supported at the other of its ends on a ring 20 fixedly mounted in the boring opening 12 of the cylinder 13. More specifically, the flange 18 is formed on a support 15 of the arc contact 5b carrying the rod 17 of the same contact. The support is cylindrical with a diameter substantially identical to that of the bore 12, so as to allow the translational guidance of the entire arc contact 5b in the cylinder 13 of the permanent contact 4b. In addition, this support 15 linearly guides freely allowing the contact rod 17 to pivot, along the central axis 19 of the arc contacts also corresponding to the central axis of the assembly of this disconnector.
Ainsi, lorsque le contact permanent 4b se déplace selon la direction 11 dans le sens de l'ouverture, conduisant à l'écartement des contacts électriques, il transmet ce mouvement au contact d'arc 5b par le biais de la réaction du ressort de compression 16 sur la bague 20. Inversement, lorsque le contact permanent 4b se déplace selon la direction 11 dans le sens de la fermeture, conduisant à un rapprochement des contacts électriques, il transmet ce mouvement au contact d' arc 5b par appui de son extrémité dans le fond de l'alésage 12, ou bien par l'intermédiaire de l'appui de tiges dans le fond de rainures correspondante, comme cela est montré sur la figure la. En effet, le support de contact d'arc 15 porte fixement deux tiges 21 diamétralement opposées, à l'extrémité de chacune desquelles est placé un galet 23 formant butée. Les tiges 21 traversent respectivement des rainures 25 pratiquées à travers le cylindre 13 du contact permanent 4b, selon la direction 11. Dans la position de fermeture montrée sur la figure la, ainsi que durant toute l'opération de fermeture qui précède l'obtention de cette position, les tiges 21 sont en appui dans le fond des rainures 25, permettant ainsi l'entraînement en translation du contact 5b par le contact 4b. Thus, when the permanent contact 4b moves in the direction 11 in the direction of opening, leading to the separation of the electrical contacts, it transmits this movement to the arc contact 5b through the reaction of the compression spring 16 on the ring 20. Conversely, when the 4b permanent contact moves in the direction of closing in the direction of closure, leading to a rapprochement of the electrical contacts, it transmits this movement in contact with the arc 5b by pressing its end into the bottom of the bore 12, or through the support of rods in the bottom of corresponding grooves, as shown in Figure la. Indeed, the arc contact holder 15 fixedly supports two diametrically opposed rods 21, at the end of each of which is placed a roller 23 forming a stop. The rods 21 pass respectively through the grooves 25 formed through the cylinder 13 of the permanent contact 4b, along the direction 11. In the closed position shown in FIG. 1a, as well as throughout the closing operation which precedes the obtaining of this position, the rods 21 are supported in the bottom of the grooves 25, thus allowing the drive in translation of the contact 5b by the contact 4b.
A cet égard, pour mettre le contact permanent 4b en mouvement, afin de mettre en œuvre les opérations d'ouverture et de fermeture du sectionneur, ce contact est relié à son extrémité arrière à un point d'attache 22 d'un dispositif d'entraînement 30. Ce dispositif 30 schématisé sur la figure lb peut être réalisé de manière conventionnelle, par exemple de manière à appliquer une vitesse de translation constante au point d'attache 22, selon la direction 11, durant chaque opération de fermeture et chaque opération d'ouverture. Le sectionneur est également équipé d'une gâchette 34 montée pivotante sur le corps fixe 8, selon un axe d'articulation 36 orthogonal à l'axe 19. A son extrémité opposée à l'articulation, la gâchette présente deux butées 38. Elles forment des moyens de butée conjointement avec les galets 23, ces derniers constituant des premières butées, et les butées 38 formant des secondes butées. Pour ce faire, les butées 23, 38 sont en regard et alignées deux à deux selon la direction 11. Dans la configuration montrée sur la figure la, les butées sont à distance les unes des autres, et ne coopèrent pas entre elles. En revanche, comme cela sera détaillé ci-après, ces butées sont amenées à coopérer temporairement deux à deux au cours d'une phase précise de l'opération d'ouverture, avant qu'un bourrelet 40 prévu sur l'extrémité arrière du cylindre 13 ne vienne faire pivoter la gâchette 34 en s' appuyant sur une barre 42 de celle-ci, pour libérer ainsi les premières et secondes butées 23, 38. Le bourrelet 40 remplit par conséquent une fonction de déverrouillage des moyens de butée. In this respect, in order to put the permanent contact 4b in motion, in order to implement the opening and closing operations of the disconnector, this contact is connected at its rear end to a point of attachment 22 of a device. This device 30 diagrammatically shown in FIG. 1b can be produced in a conventional manner, for example in such a way as to apply a constant translational speed to the point of attachment 22, in the direction 11, during each closing operation and each operation. 'opening. The disconnector is also equipped with a trigger 34 pivotally mounted on the fixed body 8, along an axis of articulation 36 orthogonal to the axis 19. At its end opposite the articulation, the trigger has two stops 38. They form stop means jointly with the rollers 23, the latter constituting the first stops, and the abutments 38 forming second stops. To do this, the stops 23, 38 are opposite and aligned in pairs in the direction 11. In the configuration shown in Figure la, the stops are spaced from each other, and do not cooperate with each other. However, as will be detailed below, these stops are caused to temporarily cooperate in pairs during a specific phase of the opening operation, before a bead 40 provided on the rear end of the cylinder 13 does not rotate the trigger 34 by pressing on a bar 42 thereof, to release and the first and second stops 23, 38. The bead 40 therefore performs a function of unlocking the stop means.
A proximité de la rupture de diamètre 44 entre le cylindre avant et le cylindre arrière 13 du contact permanent 4b, le sectionneur est équipé d'un système 50 permettant une rotation automatique et maîtrisée du contact d'arc 5b, et plus précisément de sa tige 17 selon l'axe 19. Le système 50 comporte tout d'abord une bague 52 solidaire en translation de la tige 17 qu'elle entoure. De plus, elle est solidaire en rotation de cette même tige, mais seulement dans l'un des deux sens de rotation. Par conséquent, dans un premier sens de rotation de la bague 52 selon l'axe 19, cette bague entraîne avec elle la tige de contact d'arc, tandis que dans l'autre sens de rotation, la bague 52 tourne mais la tige 17 reste fixe en rotation. In the vicinity of the diameter break 44 between the front cylinder and the rear cylinder 13 of the permanent contact 4b, the disconnector is equipped with a system 50 allowing automatic and controlled rotation of the arc contact 5b, and more precisely of its rod. 17 according to the axis 19. The system 50 comprises firstly a ring 52 integral in translation with the rod 17 which it surrounds. In addition, it is integral in rotation of the same rod, but only in one of the two directions of rotation. Therefore, in a first direction of rotation of the ring 52 along the axis 19, this ring carries with it the arc contact rod, while in the other direction of rotation, the ring 52 rotates but the rod 17 remains fixed in rotation.
La bague 52 centrée sur l'axe 19 porte fixement un doigt 54 orienté radialement, dont l'extrémité libre, opposée à celle solidaire de la bague 52, est logée dans une rainure hélicoïdale 56 d'axe 19 pratiquée à travers le cylindre 13. Cette rainure 56 est initiée au niveau de la rupture de diamètre 44, et s'étend vers l'arrière en étant ensuite légèrement prolongée par une faible portion droite parallèle à la direction 11.  The ring 52 centered on the axis 19 fixedly bears a finger 54 oriented radially, whose free end, opposite to that integral with the ring 52, is housed in a helical groove 56 of axis 19 formed through the cylinder 13. This groove 56 is initiated at the diameter break 44, and extends rearwardly then being slightly extended by a small straight portion parallel to the direction 11.
Sur les figures la et lb, le sectionneur 1 est montré en position de fermeture, dans laquelle les contacts électriques coopèrent deux à deux. Dans cette position, comme indiqué ci-dessus, le contact d'arc 5b est forcé dans le fond du cylindre 13 par le ressort de compression 16, ce qui amène les extrémités avant du contact d'arc 5b et du contact permanent 4b à se situer sensiblement dans un même plan orthogonal à l'axe central 19.  In Figures la and lb, the disconnector 1 is shown in the closed position, wherein the electrical contacts cooperate in pairs. In this position, as indicated above, the arc contact 5b is forced into the bottom of the cylinder 13 by the compression spring 16, which causes the front ends of the arc contact 5b and the permanent contact 4b to reach each other. locate substantially in the same plane orthogonal to the central axis 19.
En référence à présent aux figures 2a à 5, il va être décrit une opération d'ouverture du sectionneur, initiée depuis la position fermée représentée sur les figures la et lb. Cette opération est mise en œuvre par la rotation à vitesse constante d'un arbre d'entrée (non représenté) du dispositif d'entraînement 30 montré sur la figure lb, et conduisant à un déplacement en translation à vitesse constante du contact permanent 4b au cours de toute cette opération d'ouverture. Referring now to Figures 2a to 5, there will be described an opening operation of the disconnector, initiated from the closed position shown in Figures la and lb. This operation is carried out by rotating at constant speed an input shaft (not shown) of the driving device 30 shown in FIG. 1b, and leading to a displacement in translation at a speed constant of the permanent contact 4b during all this opening operation.
Durant la phase initiale de l'opération d'ouverture, le déplacement du point d'attache 22, dans la direction 11 dans le sens opposé à celui des contacts fixes, entraîne simultanément le contact permanent 4b et le contact d'arc 5b via le ressort 16. Durant cette phase initiale, la vitesse linéaire des éléments mobiles est relativement lente et constante, ce qui permet de limiter l'usure mécanique du sectionneur .  During the initial phase of the opening operation, the displacement of the attachment point 22, in the direction 11 in the opposite direction to that of the fixed contacts, simultaneously causes the permanent contact 4b and the arc contact 5b via the spring 16. During this initial phase, the linear speed of the moving elements is relatively slow and constant, which makes it possible to limit the mechanical wear of the disconnector.
Après la séparation des contacts permanents, les butées 23, 38 entrent en contact deux à deux et conduisent à bloquer le mouvement de translation du contact d'arc 5b par rapport au corps fixe 8, tandis que le mouvement de translation du contact permanent 4b est poursuivi toujours sous l'action du dispositif d'entraînement. Après l'activation des moyens de butée 23, 38, le ressort 16 se comprime fortement, car le contact d'arc 5b est donc temporairement bloqué en translation par rapport au contact permanent 4b, comme cela est montré sur la figure 2a. Le contact d'arc 5b reste donc un moment immobile en translation, sans être entraîné par le contact permanent 4b qui continue sa course.  After the separation of the permanent contacts, the stops 23, 38 come into contact in pairs and lead to blocking the translation movement of the arc contact 5b relative to the fixed body 8, while the translational movement of the permanent contact 4b is continued always under the action of the driving device. After the activation of the abutment means 23, 38, the spring 16 is strongly compressed, because the arc contact 5b is temporarily blocked in translation relative to the permanent contact 4b, as shown in Figure 2a. The arc contact 5b therefore remains a motionless moment in translation, without being driven by the permanent contact 4b which continues its course.
Ainsi, cela conduit le ressort 16 à emmagasiner de l'énergie par déplacement du contact permanent 4b relativement au contact d' arc 5b en direction d'une seconde position d'extrémité opposée à la première position d'extrémité susmentionnée. Les figures 2a et 2b montrent l'état du sectionneur avec le ressort 16 fortement comprimé, et les contacts d'arc électrique toujours en contact. Thus, this causes the spring 16 to store energy by moving the permanent contact 4b relative to the arc contact 5b toward a second end position opposite to the aforementioned first end position. Figures 2a and 2b show the state of the disconnector with the spring 16 strongly compressed, and the arcing contacts still in contact.
Durant cette phase de compression du ressort 16, le doigt 54 se déplace au sein de la rainure 56, provoquant par la même la rotation de la bague 52 dans le second sens de rotation, c'est-à-dire celui n'entraînant pas la tige 17 du contact d'arc 5b. Cette tige 17 reste par conséquent fixe en rotation relativement au support de contact d'arc 15.  During this phase of compression of the spring 16, the finger 54 moves within the groove 56, thereby causing the rotation of the ring 52 in the second direction of rotation, that is to say, the one that does not lead the rod 17 of the arc contact 5b. This rod 17 therefore remains rotationally fixed relative to the arc contact support 15.
A la fin de la phase de compression du ressort, l'état représenté sur la figure 2a montre que le doigt 54 est en appui sur l'extrémité avant de la rainure hélicoïdale 56, et/ou en appui sur la rupture de diamètre 44 du contact permanent.  At the end of the compression phase of the spring, the state represented in FIG. 2a shows that the finger 54 bears against the front end of the helical groove 56, and / or bears against the diameter break 44 of the permanent contact.
Dans cet état, le contact d'arc 5b, largement en saillie relativement au contact permanent comme montré sur la figure 2b, adopte une seconde position atteinte après que le contact permanent 4b ait été déplacé d'une distance déterminée par rapport au contact 5b.  In this state, the arc contact 5b, largely protruding relative to the permanent contact as shown in FIG. 2b, adopts a second position reached after the permanent contact 4b has been displaced by a determined distance from the contact 5b.
A cet instant, le bourrelet 40 du cylindre 13 appuie sur la tige 42 de la gâchette 34 et provoque le pivotement de celle-ci autour de l'axe 36, comme cela a été illustré sur la figure 3. Après un certain angle de pivotement de la gâchette, les secondes butées 38 libèrent les premières butées 23, et rendent libre le contact d'arc 5b qui est alors déplacé à une vitesse très importante dans la direction 11, sous l'effet de la libération d'énergie du ressort 16.  At this moment, the bead 40 of the cylinder 13 bears on the rod 42 of the trigger 34 and causes the latter to pivot about the axis 36, as has been illustrated in FIG. 3. After a certain pivoting angle of the trigger, the second stops 38 release the first stops 23, and make free the arc contact 5b which is then moved at a very high speed in the direction 11, under the effect of the energy release of the spring 16 .
Le déplacement à grande vitesse du contact d'arc 5b atténue les sollicitations électriques. Celles-ci sont encore plus affaiblies par le fait que durant le déplacement relatif entre les deux contacts 4b, 5b, le doigt 54 se déplace au sein de la rainure hélicoïdale 56, provoquant par la même la rotation de la bague 52 dans le premier sens de rotation, c'est-à- dire celui entraînant la tige 17 du contact d'arc 5b. La figure 4a montre une partie du sectionneur durant la phase de déplacement du doigt 54 dans la rainure 56. The high speed displacement of the arc contact 5b attenuates the electrical stresses. These are further weakened by the fact that during the relative displacement between the two contacts 4b, 5b, the finger 54 moves within the helical groove 56, thereby causing the ring 52 to rotate in the first direction rotation, that is to say the one driving the rod 17 of the arc contact 5b. FIG. 4a shows a part of the disconnector during the phase of displacement of the finger 54 in the groove 56.
Du fait de la rotation de la tige 17 relativement au support 15 selon l'axe 19, il se crée un mouvement relatif de rotation entre les deux contacts d'arcs, qui étire l'arc électrique et qui favorise ainsi son extinction.  Due to the rotation of the rod 17 relative to the support 15 along the axis 19, there is created a relative rotational movement between the two arcing contacts, which stretches the electric arc and thus promotes its extinction.
La libération d'énergie du ressort et la rotation du contact d'arc s'effectuent simultanément, de préférence pendant la séparation des contacts d'arc électrique, c'est-à-dire qu'elles sont amorcées à l'instant précis de la séparation des contacts d'arcs ou bien avant ce même instant. La rotation est quant à elle stoppée légèrement avant la fin de la phase de libération d'énergie, et plus précisément stoppée lorsque le doigt 54 pénètre dans le prolongement droit de la rainure 56, dans la configuration montrée sur la figure 4b. A cet égard, il est noté que le sectionneur 1 est conçu de sorte qu'à cet instant de fin de rotation, l'arc électrique est déjà éteint.  The release of energy from the spring and the rotation of the arcing contact are performed simultaneously, preferably during the separation of the arcing contacts, that is, they are initiated at the precise instant of the separation of the contacts of arcs or before this same instant. The rotation is stopped slightly before the end of the energy release phase, and more precisely stopped when the finger 54 enters the straight extension of the groove 56, in the configuration shown in Figure 4b. In this regard, it is noted that the disconnector 1 is designed so that at this moment of end of rotation, the electric arc is already off.
La phase d' accélération du contact d' arc 5b est observée jusqu'au moment où ce contact arrive en butée dans le fond de l'alésage 12, et/ou lorsque les tiges 21 arrivent en appui dans le fond des rainures droites 25 du cylindre 13. Après ce contact ramenant les deux extrémités avant des contacts 4b, 5b dans un même plan orthogonal à l'axe 19, ces deux contacts sont à nouveau entraînés sensiblement à la même vitesse linéaire par le dispositif d'entraînement, jusqu'à ce qu'ils s'arrêtent en position d'ouverture montrée sur la figure 5. The acceleration phase of the arc contact 5b is observed until this contact comes into abutment in the bottom of the bore 12, and / or when the rods 21 come into abutment in the bottom of the straight grooves 25 of the cylinder 13. After this contact bringing the two ends before contacts 4b, 5b in a same plane orthogonal to the axis 19, these two contacts are again driven substantially at the same linear speed by the drive device, until they stop in the open position shown in Figure 5.
Après cette phase d'ouverture, le contact d' arc 5b a donc été déplacé en rotation par rapport à sa position initialement occupée en position de fermeture. L'étendue angulaire de cette rotation est par exemple comprise entre 92 et 100° dans la solution représentée, et est plus généralement supérieure au quart de tour. Par conséquent, étant donné que l'opération de fermeture suivante n'entraîne aucune rotation du contact d'arc 5b, ce dernier est ensuite replacé en position de fermeture dans une position angulaire distincte de celle adoptée au cycle précédent. A cet égard, pour limiter encore davantage les effets d'usure électrique, il est préférentiellement fait en sorte que 360 ne soit pas un multiple de cette valeur de l'étendue angulaire, de manière à ce qu'une même position angulaire ne se répète pas après un tour entier du contact d'arc.  After this opening phase, the arc contact 5b has been moved in rotation relative to its initially occupied position in the closed position. The angular extent of this rotation is for example between 92 and 100 ° in the solution shown, and is more generally greater than a quarter turn. Therefore, since the next closing operation causes no rotation of the arc contact 5b, the latter is then returned to the closed position in an angular position distinct from that adopted in the previous cycle. In this regard, to further limit the effects of electrical wear, it is preferentially made so that 360 is not a multiple of this value of the angular extent, so that the same angular position is repeated not after an entire turn of the arc contact.
Bien entendu, diverses modifications peuvent être apportées par l'homme du métier à l'invention qui vient d'être décrite, uniquement à titre d'exemple non limitatif.  Of course, various modifications may be made by those skilled in the art to the invention which has just been described, solely by way of non-limiting example.

Claims

REVENDICATIONS
1. Appareillage électrique de coupure (1), en particulier un sectionneur, comprenant deux contacts d'arc électrique (5a, 5b) conçus pour être amenés d'une position de fermeture à une position d'ouverture lors d'une opération d'ouverture, par déplacement relatif en translation selon un axe central (19) de ces contacts d' arc, Electrical switchgear (1), in particular an isolating switch, comprising two electric arc contacts (5a, 5b) adapted to be brought from a closed position to an open position during a switch operation. opening, by relative displacement in translation along a central axis (19) of these arc contacts,
caractérisé en ce que l'appareillage comporte de plus des moyens de mise en rotation (54, 56) permettant de provoquer une rotation des contacts d'arc (5a, 5b) l'un par rapport à l'autre selon ledit axe central (19), au moins après la séparation des contacts d'arc lors d'une opération d'ouverture,  characterized in that the apparatus further comprises rotational means (54, 56) for causing rotation of the arc contacts (5a, 5b) relative to each other along said central axis ( 19), at least after the separation of the arcing contacts during an opening operation,
et en ce que l'un des deux contacts d'arcs électrique (5b) est un contact d'arc mobile faisant partie intégrante d'un ensemble mobile électriquement conducteur (6) comportant également un autre corps (4b) monté mobile à coulissement relativement au contact d'arc mobile (5b) selon une direction de déplacement (11) de cet ensemble électriquement conducteur (6), ce dernier comportant en outre des moyens élastiques de rappel (16) interposés entre ledit contact d'arc mobile et ledit autre corps, et ledit appareillage étant conçu de sorte qu'au cours d'une opération d'ouverture, lesdits moyens élastiques de rappel (16) puissent d'abord emmagasiner de l'énergie par déplacement relatif entre ledit contact d'arc mobile (5b) et ledit autre corps (4b), puis libérer l'énergie emmagasinée pour provoquer une accélération dudit contact d' arc mobile (5b) . and in that one of the two electrical arcing contacts (5b) is a movable arcing contact forming an integral part of an electrically conductive moving assembly (6) also having a further relatively movably movable body (4b) in the moving arcing contact (5b) in a direction of movement (11) of this electrically conductive assembly (6), the latter further comprising elastic return means (16) interposed between said moving arcing contact and said other body, and said apparatus being designed such that during an opening operation, said elastic return means (16) can first store energy by relative displacement between said movable bow contact (5b ) and said other body (4b), then release the stored energy to cause an acceleration of said moving arc contact (5b).
2. Appareillage selon la revendication 1, caractérisé en ce que lesdits moyens de mise en rotation (54, 56) sont conçus pour amorcer la rotation relative des deux contacts d'arc (5a, 5b) pendant la séparation des contacts d'arc électrique. 2. Apparatus according to claim 1, characterized in that said rotating means (54, 56) are adapted to initiate the relative rotation of the two arcing contacts (5a, 5b) during the separation of the arcing contacts. .
3. Appareillage selon la revendication 1 ou la revendication 2, caractérisé en ce que lesdits moyens de mise en rotation (54, 56) sont conçus de manière à ce que la position angulaire relative entre les deux contacts d'arc électrique (5a, 5b) diffère entre celle adoptée dans une position de fermeture des contacts d'arc, et celle adoptée dans la position de fermeture du cycle directement consécutif. 3. Apparatus according to claim 1 or claim 2, characterized in that said rotating means (54, 56) are designed so that the relative angular position between the two arcing contacts (5a, 5b ) differs between that adopted in a closed position of the arcing contacts, and that adopted in the close position of the directly consecutive cycle.
4. Appareillage selon l'une quelconque des revendications précédentes, caractérisé en ce que lesdits moyens de mise en rotation (54, 56) sont conçus pour appliquer une rotation relative des deux contacts d'arc (5a, 5b) seulement durant la phase de libération d'énergie desdits moyens élastiques de rappel (16) . 4. Apparatus according to any one of the preceding claims, characterized in that said rotation means (54, 56) are adapted to apply a relative rotation of the two arc contacts (5a, 5b) only during the phase of release of energy from said elastic return means (16).
5. Appareillage selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit autre corps (4b) est destiné à être relié à un point d'attache (22) d'un dispositif d'entraînement (30) dudit ensemble mobile électriquement conducteur (6) . 5. Apparatus according to any one of the preceding claims, characterized in that said other body (4b) is intended to be connected to an attachment point (22) of a drive device (30) of said electrically movable assembly driver (6).
6. Appareillage selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit autre corps comporte un contact électrique permanent (4b) . 6. Apparatus according to any one of the preceding claims, characterized in that said other body comprises a permanent electrical contact (4b).
7. Appareillage selon l'une quelconque des revendications précédentes, caractérisé en ce que lesdits moyens de mise en rotation comportent un système de doigt (54) logé dans une rainure hélicoïdale (56), ladite rotation relative des deux contacts d'arc (5a, 5b) s' opérant de manière automatique par déplacement du doigt (54) dans la rainure hélicoïdale (56) , durant le coulissement entre ledit autre corps (4b) et le contact d'arc mobile (5b), au cours de la phase de libération d'énergie desdits moyens élastiques de rappel (16). Apparatus according to any one of the preceding claims, characterized in that said rotation means comprise a finger system (54) housed in a helical groove (56), said relative rotation of the two arc contacts (5a). 5b) operating automatically by moving the finger (54) in the helical groove (56) during sliding between said other body (4b) and the movable arc contact (5b) during the phase for releasing energy from said elastic return means (16).
8. Appareillage selon la revendication 7, caractérisé en ce que ledit système comporte également une bague (52) entourant le contact d'arc mobile (5b), ladite bague étant solidaire de l'extrémité du doigt opposée à celle logée dans ladite rainure hélicoïdale (56) pratiquée dans ledit autre corps (4b) . 8. Apparatus according to claim 7, characterized in that said system also comprises a ring (52) surrounding the movable arc contact (5b), said ring being integral with the end of the finger opposite to that housed in said helical groove (56) practiced in said other body (4b).
9. Appareillage selon la revendication 8, caractérisé en ce que ladite bague (52) est reliée au contact d'arc mobile (5b) de manière à ce que lorsqu'elle est mise en rotation dans un premier sens de rotation, elle entraîne avec elle le contact d'arc (5b) en rotation selon l'axe central (19), et de manière à ce que lorsqu'elle est mise en rotation dans un second sens de rotation opposé au premier, elle n'entraîne aucune rotation du contact d'arc (5b) . 9. Apparatus according to claim 8, characterized in that said ring (52) is connected to the movable arcing contact (5b) so that when it is rotated in a first direction of rotation, it leads with it the arc contact (5b) in rotation along the central axis (19), and so that when it is rotated in a second direction of rotation opposite the first, it causes no rotation of the arc contact (5b).
10. Appareillage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte des moyens de butée (23, 38) permettant, au cours d'une opération d'ouverture, de bloquer le mouvement de translation dudit contact d'arc mobile (5b) par rapport à un corps fixe (8) de l'appareillage, et en ce que ledit autre corps (4b) est équipé de moyens de déverrouillage (40) conçus pour libérer lesdits moyens de butée après que cet autre corps ait été déplacé relativement au contact d'arc mobile (5b), selon une distance prédéterminée. 10. Apparatus according to any one of the preceding claims, characterized in that it comprises stop means (23, 38) for, during an opening operation, to block the translational movement of said contact d ' moving arc (5b) relative to a fixed body (8) of the apparatus, and in that said other body (4b) is provided with unlocking means (40) designed to release said stop means after said other body has been moved relative to the moving arc contact (5b) by a predetermined distance.
11. Appareillage selon la revendication 10, caractérisé en ce que lesdits moyens de butée comportent une première butée (23) solidaire dudit contact d'arc mobile (5b), ainsi qu'une seconde butée (38) montée sur ledit corps fixe (8) de l'appareillage. 11. Apparatus according to claim 10, characterized in that said abutment means comprise a first abutment (23) integral with said movable arcing contact (5b), and a second abutment (38) mounted on said fixed body (8). ) of the equipment.
12. Appareillage selon la revendication 11, caractérisé en ce que ladite seconde butée (38) fait partie intégrante d'une gâchette (34) montée pivotante sur ledit corps fixe (8), les moyens de déverrouillage12. Apparatus according to claim 11, characterized in that said second stop (38) is an integral part of a trigger (34) pivotally mounted on said fixed body (8), the unlocking means
(40) dudit autre corps (4b) étant destinés à faire pivoter cette gâchette afin de libérer lesdites première et seconde butées (23, 38) . (40) said other body (4b) being intended to rotate this trigger to release said first and second stops (23, 38).
13. Procédé de mise en œuvre d'une opération d'ouverture à l'aide d'un appareillage (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins après la séparation des deux contacts d'arc électrique (5a, 5b), ceux-ci sont mis en rotation l'un par rapport à l'autre selon leur axe central (19) . 13. Method for implementing an opening operation using an apparatus (1) according to any one of the preceding claims, characterized in that at least after the separation of the two arcing contacts (5a, 5b), they are rotated relative to each other according to their central axis (19).
PCT/EP2014/050588 2013-01-14 2014-01-14 Breaker having a rotating-arc contact WO2014108558A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201480004605.6A CN104919557B (en) 2013-01-14 2014-01-14 Breaker with rotating the arc contact
JP2015552089A JP2016507128A (en) 2013-01-14 2014-01-14 Breaker with rotating arc contact
KR1020157021703A KR20150105986A (en) 2013-01-14 2014-01-14 Breaker having a rotating-arc contact
EP14700483.2A EP2943967B1 (en) 2013-01-14 2014-01-14 Disconnecting switch with rotating arc contact

Applications Claiming Priority (2)

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FR1350311 2013-01-14
FR1350311A FR3001081B1 (en) 2013-01-14 2013-01-14 ROTATING ARC CONTACT DISCONNECT

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JP (1) JP2016507128A (en)
KR (1) KR20150105986A (en)
CN (1) CN104919557B (en)
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WO2015107023A1 (en) * 2014-01-14 2015-07-23 Alstom Technology Ltd Disconnecting switch that detects the failure of an acceleration spring of an arcing contact
CN111989757A (en) * 2018-03-28 2020-11-24 Abb电网瑞士股份公司 Spring-loaded auxiliary contact system for bus transmission switching in a central on-off switch

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EP3142134A1 (en) * 2015-09-14 2017-03-15 Siemens Aktiengesellschaft System to assist with the detection of a failure of a disconnector suitable for medium and high voltages
EP3226276B1 (en) * 2016-03-31 2021-03-10 Siemens Energy Global GmbH & Co. KG Disconnect switch suitable for medium and high voltages and disconnection method using said disconnect switch
CN108242356A (en) * 2018-03-15 2018-07-03 北京双杰电气股份有限公司 A kind of push button switching off/on device for 10KV Inflatable ring main units switch
CN110556265A (en) * 2019-09-06 2019-12-10 华东交通大学 Rotary contact structure of vacuum arc-extinguishing chamber suitable for capacitive load switching

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WO2015107023A1 (en) * 2014-01-14 2015-07-23 Alstom Technology Ltd Disconnecting switch that detects the failure of an acceleration spring of an arcing contact
CN111989757A (en) * 2018-03-28 2020-11-24 Abb电网瑞士股份公司 Spring-loaded auxiliary contact system for bus transmission switching in a central on-off switch
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Also Published As

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FR3001081A1 (en) 2014-07-18
EP2943967A1 (en) 2015-11-18
FR3001081B1 (en) 2016-05-13
JP2016507128A (en) 2016-03-07
CN104919557A (en) 2015-09-16
EP2943967B1 (en) 2017-03-15
KR20150105986A (en) 2015-09-18
CN104919557B (en) 2017-09-01

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