EP0348584A1 - High speed circuit breaker actuated by a control device - Google Patents

High speed circuit breaker actuated by a control device Download PDF

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Publication number
EP0348584A1
EP0348584A1 EP88870113A EP88870113A EP0348584A1 EP 0348584 A1 EP0348584 A1 EP 0348584A1 EP 88870113 A EP88870113 A EP 88870113A EP 88870113 A EP88870113 A EP 88870113A EP 0348584 A1 EP0348584 A1 EP 0348584A1
Authority
EP
European Patent Office
Prior art keywords
disc
repulsion
circuit breaker
breaker according
tail
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88870113A
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German (de)
French (fr)
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EP0348584B1 (en
Inventor
Henri Bonhomme
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom Belgium SA
Original Assignee
ACEC Transport SA
ACEC SA
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
Priority to EP88870113A priority Critical patent/EP0348584B1/en
Application filed by ACEC Transport SA, ACEC SA filed Critical ACEC Transport SA
Priority to ES88870113T priority patent/ES2043893T3/en
Priority to DE88870113T priority patent/DE3883530T2/en
Priority to AT88870113T priority patent/ATE93647T1/en
Priority to US07/371,223 priority patent/US5059932A/en
Priority to FI893101A priority patent/FI92264C/en
Priority to CA000603882A priority patent/CA1315325C/en
Publication of EP0348584A1 publication Critical patent/EP0348584A1/en
Application granted granted Critical
Publication of EP0348584B1 publication Critical patent/EP0348584B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/222—Power arrangements internal to the switch for operating the driving mechanism using electrodynamic repulsion

Definitions

  • This invention relates to a hyper fast current limiting circuit breaker usable at medium voltage and more particularly suitable for electric traction, in rolling stock or fixed equipment.
  • US Patents 3723922 and US 3764944 describe a mechanism intended for a synchronous breaking device, for alternating network, in which the axial displacement of a disc connected to a movable contact bridge by an ar bre bre is obtained by repulsion using spiral coils excited by a large current from the discharge of a capacitor specially designed for this use.
  • This device designed for high voltage alternating current, works under a high vacuum. It uses complex manufacturing excitation coils and special devices for decelerating the central shaft.
  • European patent application No. 85 870 134.5 describes an apparatus in which the cut-off, without significant arc, is obtained by the addition of an oscillating circuit, controlled by semiconductors and whose inductor is used as a repulsion coil , a super fast mechanism with electromagnetic hold in which the same element acts both as a repulsion disc and as a movable contact bridge.
  • the mechanism is associated with an oscillating circuit via power semiconductors and includes in particular: - a spiral repulsion coil, located in an insulating mass and acting as the self of the oscillating circuit, - a metal disc acting as a contact bridge and collaborating with the repulsion coil, - a reciprocating mobile assembly, - a permanent magnet or a holding coil and a magnetic yoke inserted in this mobile assembly, - a frame collaborating with the magnetic yoke in connection with the disc.
  • the opening delay is defined as the time that elapses between the start of the opening order and the moment when the movable contacts start to move away from the fixed contacts.
  • the opening speed must above all be important at the start of the race to quickly obtain a sufficient distance.
  • the object of the present invention is to provide a super fast circuit breaker suitable for medium and high voltages, assisted by a control circuit, which has a particularly efficient mechanical part.
  • An additional aim of the present invention consists in providing a hyper fast circuit breaker of the above-mentioned type, the moving parts of which have a reduced moment of inertia compared to what is known in the prior art.
  • Another purpose complementary to the present invention tion aims to provide a high-speed, high-performance circuit breaker, of particularly simple construction which is robust and nevertheless inexpensive.
  • the super fast circuit breaker connected by a semiconductor control circuit comprising a repulsion coil, a repulsion disc associated with a contact bridge carrying the movable contacts, said repulsion disc collaborating with said coil.
  • the holding means consists of a retaining spring acting on the repulsion disc associated with the contact bridge via a retaining means acting on said disc repulsion, retaining means which exerts sufficient pressure to resist an imposed contact pressure and which is arranged retractably during the repulsion of the disc under the effect of the repulsion coil.
  • the retaining spring is crushed and the circuit breaker is armed by the action of compressed air.
  • the retaining spring can release all of its energy to apply the contact bridge and therefore the movable contacts against the fixed contacts. It is quite obvious that in order to overcome the electro-dynamic repulsion and in order to limit the formation of pre-arcs between the fixed and mobile contacts, it is necessary to provide a spring, preferably precompressed, sufficiently powerful.
  • the repulsion disc comprises, on the side opposite to that which is associated with the contact bridge, a shank on which the retaining means acts.
  • the retaining means consists of a plurality of balls or rollers, preferably two or four balls or rollers, applied under pressure, possibly using a spring, against said tail secured to the repulsion disc preferably along axes oriented perpendicular to the axis of the tail.
  • the tail has a frustoconical surface which increases while moving away from the repulsion disc, or inclined planes which deviate from the axis of said tail while moving away from the repulsion disc, l end of the frustoconical surface or inclined planes, close to the repulsion disc being provided with a shoulder serving as a stop for housing the balls or rollers, and the end of the frustoconical surface or inclined planes, remote from the repulsion disc comprising a groove for housing the balls or rollers, the distance separating the shoulder from the groove essentially corresponding to the travel of the movable contacts.
  • the moving part which must be subjected to significant accelerations during the breaking of the contacts, for example in the event of a short circuit, is reduced to a light part of low moment of inertia simply comprising the associated repulsion disc. at the contact bridge and at the tail. Obviously, the behavior of this moving part can still be improved by choosing an appropriate light metallic material.
  • the device according to the present invention comprises a damping means which dampens the sudden movement of the repulsion disc associated with its tail, during the interruption of the electrical circuit, that is to say during the repulsion by the coil. of repulsion.
  • a damping means which dampens the sudden movement of the repulsion disc associated with its tail, during the interruption of the electrical circuit, that is to say during the repulsion by the coil. of repulsion.
  • the retaining spring In the rest state, that is to say open contacts, unarmed circuit breaker, the retaining spring is precompressed while the repulsion disc is in a position separated from the fixed contacts, that is to say that the balls or rollers are applied to the tail, near the repulsion disc, namely against the shoulder serving as a housing stop.
  • pressurized air is introduced into an adequate chamber, which compresses the retaining spring and moves the retaining balls or rollers along the frustoconical surface or along the planes inclined, the repulsion disc being retained by a stop, until these or these engage in the housing groove at the free end of the tail secured to said repulsion disc.
  • the closing of the electrical circuit that is to say the closing of the circuit breaker must be carried out quickly and with a relatively large force in order to avoid the formation of pre-arcs and in order to overcome the forces of repulsion electro-dynamic. Thanks to the release of compressed air, preferably by venting, the retaining spring releases all of its energy and applies the contact bridge with its movable contacts against the fixed contacts by means of the balls or rollers housed in said housing groove at the end of the tail.
  • the circuit breaker 1 comprises a cylinder 3 closed at one end by a bottom cover 5 which is fixed thereto by means of a flange 7, a ring 9 housed in a corresponding groove 11 of said cylinder, the cover being tightened by means of screws or suitable 13, and closed at the other end by a second cover 15 which is fixed thereto in a similar manner by a flange 17, a ring 19 and screws or bolts 21.
  • Said cylinder 3 comprises, inside, a piston 25 which can slide therein, and a retaining spring 27 which is supported on the bottom cover 5 and on a shoulder 29 formed in said piston.
  • Said piston is surmounted by a sheath 31 which passes through the cover 15 in its corresponding central opening 16.
  • Said sheath 31 is surmounted, at its free end, by retaining means bearing the mark general 33.
  • the circuit breaker according to the present invention is surmounted by a repulsion coil 35 advantageously cast in a resin 35 ′, the whole being assembled by bolts or threaded rods 36.
  • It also includes a repulsion disc 37 associated with a contact bridge 39 carrying the movable contacts 41, and with a shank 43 described in more detail below.
  • the retaining means 33 mounted on the end of the sleeve 31 by screwing for example comprises a plurality of balls or rollers 51 which are applied against the tail 43 of the repulsion disc 37 by means of an adjustable pressure.
  • the tail 43 is made integral with the repulsion disc 37.
  • the tail 43 is in the form of a frustoconical surface 61 provided at the close end of the repulsion disc 37 with a shoulder 63 and , at the free end, of a groove 65.
  • the repulsion disc is free to rotate about its axis 38, which makes it possible to reduce local wear movable contacts 41.
  • the tail 43 preferably has 4 inclined planes 61 which deviate from the axis 38 away from the repulsion disc 37.
  • the specific pressure by the retaining means is reduced. If, in addition, it is desired to reduce the wear of the movable contacts, it is possible, after a certain number of operations to turn the disc by 90 ° for example, if four rollers have been provided.
  • the dis the trunk also includes a shock absorber mounted inside an axial guide 69 secured to the bottom cover 5.
  • the spring 27 which is preferably precompressed keeps the piston 23 and, therefore, the sheath 31 in the high position, the repulsion disc being in the low position, away from the coil repulsion, by relying on the balls or rollers 51 by means of the shoulder 63.
  • cylindrical wall of the piston 25 also acts as a mechanical stop for the spring 27 preventing it from being compressed with contiguous turns.
  • the cylindrical wall is also dimensioned in such a way that, when the spring 27 is compressed to the maximum, the balls or rollers 51 engage in the annular groove 65.
  • the sleeve 31 integral with said piston 25 drives with it, via the retaining means, and more particularly the balls or rollers 51, the tail 43 and, consequently, the repulsion disc 37 until the contact bridge carrying the contacts movable contacts the fixed contacts.
  • the force of the spring 55 must therefore be sufficient to maintain the balls or rollers 51 in the groove 65 during this step and to ensure optimum contact pressure.
  • the electrical control circuit sends a current warhead into the repulsion coil 35.
  • This high force makes it possible to dislodge the balls or rollers 51 of the groove 65 by crushing the spring 55.
  • the repulsion disc associated with the contact bridge 39 and the shank 43 thus undergoes a particularly high acceleration; which reduces the risk of arcing and contact wear.
  • the accelerated repulsion disc must also be braked.
  • the braking role is played by the damper 67 and by the balls or rollers 51 which also allow the disc 37 to be housed in the rest position of FIG. 1 thanks to the shoulder 63.
  • the repulsion coil 35 advantageously has a diameter close to that of the disc of repulsion.
  • a coil 35 may be provided which is oversized with respect to the diameter of the repulsion disc 37.
  • the contact bridge and the repulsion disc form a single piece, the movable contacts then being arranged on the periphery of the repulsion disc.
  • the circuit breaker according to the present invention can be associated with any electronic control circuit comprising a choke serving as a repulsion coil.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)
  • Keying Circuit Devices (AREA)

Abstract

High-speed circuit breaker actuated by a semiconductor control device, comprising a repelling coil, a repelling disc (37) linked to a contact bridge (39) carrying the moving contacts (41), the said repelling disc (37) collaborating with the said repelling coil (35), and a means of holding the contacts in the closed state, characterised in that the holding means consists of a holding spring (27) acting on the repelling disc (37) linked to the contact bridge (39) via a retaining means (33) acting on the repelling disc (37) linked to the contact bridge (39), a retaining means (27) which exerts a pressure sufficient to resist an imposed contact pressure and which is arranged so as to be retractable during the repelling of the disc (37) under the effect of the repelling coil (35). <IMAGE>

Description

Objet de l'inventionSubject of the invention

Cette invention est relative à un disjoncteur hy­per rapide limiteur de courant utilisable en moyenne tension et plus particulièrement adapté à la traction électrique, dans le matériel roulant ou le matériel fi­xe.This invention relates to a hyper fast current limiting circuit breaker usable at medium voltage and more particularly suitable for electric traction, in rolling stock or fixed equipment.

Résumé de l'état de la techniqueSummary of the state of the art

Il est bien connu que les réseaux électriques tels que ceux utilisés en traction comme en industrie deviennent de plus en plus complexes et puissants. La conception des appareils de coupure doit évoluer pour couper des courants de plus en plus grands et réduire les frais de maintenance. Un appareil de coupure de la nouvelle génération doit être rapide pour limiter le courant et diminuer les sollicitations mécaniques et thermiques de toute l'installation ainsi que l'usure de ses contacts et de sa boîte de soufflage. Actuellement, les appareils de coupure comportent des mécanismes ul­tra-rapides pour l'ouverture des contacts et une boîte de soufflage dans laquelle l'arc créé est confiné et re­froidi. Ces appareils entraînent des frais significatifs dus aux interventions d'entretien et aux remplacements des pièces d'usure.It is well known that electrical networks such as those used in traction as in industry are becoming more and more complex and powerful. The design of switchgear must evolve to cut larger and larger currents and reduce maintenance costs. A new generation switchgear must be fast to limit the current and reduce the mechanical and thermal stresses of the entire installation as well as the wear of its contacts and its blowing box. Cutting devices currently include ultra-rapid mechanisms for opening the contacts and a blowing box in which the arc created is confined and cooled. These devices entail significant costs due to maintenance interventions and the replacement of wearing parts.

Diverses associations entre des mécanismes et des circuits de commande à semi-conducteurs ont été propo­sées.Various associations between semiconductor mechanisms and control circuits have been proposed.

Les brevets US 3723922 et US 3764944 décrivent un mécanisme destiné à un appareil de coupure synchrone, pour réseau alternatif, dans lequel le déplacement axial d'un disque relié à un pont de contact mobile par un ar­ bre central est obtenu par répulsion à l'aide de bobines de forme spirale excitées par un courant important pro­venant de la décharge d'un condensateur spécialement prévu pour cet usage. Cet appareil, conçu pour la haute tension en courant alternatif, travaille sous un vide poussé. Il utilise des bobines d'excitation de fabrica­tion complexe et des dispositifs particuliers de décélé­ration de l'arbre central.US Patents 3723922 and US 3764944 describe a mechanism intended for a synchronous breaking device, for alternating network, in which the axial displacement of a disc connected to a movable contact bridge by an ar bre bre is obtained by repulsion using spiral coils excited by a large current from the discharge of a capacitor specially designed for this use. This device, designed for high voltage alternating current, works under a high vacuum. It uses complex manufacturing excitation coils and special devices for decelerating the central shaft.

La demande de brevet européen No.85 870 134.5 dé­crit un appareil dans lequel la coupure, sans arc signi­ficatif, est obtenue grâce à l'adjonction d'un circuit oscillant, commandé par semi-conducteurs et dont la self est utilisée comme bobine de répulsion, à un mécanisme hyper rapide à maintien électromagnétique dans lequel un même élément fait à la fois office de disque de répul­sion et de pont de contact mobile..European patent application No. 85 870 134.5 describes an apparatus in which the cut-off, without significant arc, is obtained by the addition of an oscillating circuit, controlled by semiconductors and whose inductor is used as a repulsion coil , a super fast mechanism with electromagnetic hold in which the same element acts both as a repulsion disc and as a movable contact bridge.

Le mécanisme est associé à un circuit oscillant par l'intermédiaire de semi-conducteurs de puissance et comprend notamment :
- une bobine de répulsion de forme spirale, située dans une masse isolante et faisant office de self du cir­cuit oscillant,
- un disque métallique faisant office de pont de contact et collaborant avec la bobine de répulsion,
- un ensemble mobile à mouvement alternatif,
- un aimant permanent ou un bobinage de maintien et une culasse magnétique insérés dans cet ensemble mobile,
- une armature collaborant avec la culasse magnétique en liaison avec le disque.The mechanism is associated with an oscillating circuit via power semiconductors and includes in particular:
- a spiral repulsion coil, located in an insulating mass and acting as the self of the oscillating circuit,
- a metal disc acting as a contact bridge and collaborating with the repulsion coil,
- a reciprocating mobile assembly,
- a permanent magnet or a holding coil and a magnetic yoke inserted in this mobile assembly,
- a frame collaborating with the magnetic yoke in connection with the disc.

Dans le cas de l'appareillage qui y est décrit, on obtient un effort de répulsion qui prend très vite une importance considérable sans pour cela nécessiter un stockage important d'énergie sous forme mécanique (par exemple la déformation de ressorts ou la mise sous pres­sion d'un fluide).In the case of the apparatus described therein, a repulsion force is obtained which very quickly becomes of considerable importance without for this requiring significant storage of energy in mechanical form (for example the deformation of springs or the pressurization of a fluid).

On a ensuite tenté d'améliorer l'efficacité à la coupure de ce type d'appareillage par un circuit de com­ mande plus performant qui empêche essentiellement la formation d'arc et qui permet, de ce fait, une durée de vie prolongée et/ou un espacement prolongé des entre­tiens.We then tried to improve the efficiency of switching off this type of equipment by a communication circuit. more efficient control which essentially prevents the formation of arcs and which therefore allows an extended service life and / or extended service intervals.

Il est toutefois apparu que dans certains cas d'application, la partie mécanique du disjoncteur hyper rapide accuse un retard à l'ouverture trop inportant et une vitesse d'ouverture trop peu élevée. Le retard à l'ouverture se définit comme étant le laps de temps qui s'écoule entre le début de l'ordre d'ouverture et l'in­stant où les contacts mobiles commencent à s'écarter des contacts fixes.However, it has become apparent that in certain application cases, the mechanical part of the hyper-fast circuit breaker shows an excessively significant delay in opening and too low an opening speed. The opening delay is defined as the time that elapses between the start of the opening order and the moment when the movable contacts start to move away from the fixed contacts.

La vitesse d'ouverture doit surtout être impor­tante en début de course pour obtenir rapidement une distance suffisante.The opening speed must above all be important at the start of the race to quickly obtain a sufficient distance.

Cet inconvénient du disjoncteur du type susmen­tionné est essentiellement dû au fait que la partie mo­bile présente un moment d'inertie assez important puis­qu'elle doit être magnétique afin de tenir sur un aimant permanent ou un électro-aimant pour le maintien des con­tacts à l'état fermé et assurer une pression de contact déterminée entre le pont portant les contacts mobiles et les contacts fixes.This drawback of the circuit breaker of the aforementioned type is essentially due to the fact that the mobile part has a fairly large moment of inertia since it must be magnetic in order to hold on to a permanent magnet or an electromagnet for maintaining the contacts on the closed state and ensure a determined contact pressure between the bridge carrying the movable contacts and the fixed contacts.

Buts de l'inventionAims of the invention

Le but de la présente invention consiste à four­nir un disjoncteur hyper rapide convenant pour les moyennes et hautes tensions, assisté par un circuit de commande, qui comporte une partie mécanique particuliè­rement performante.The object of the present invention is to provide a super fast circuit breaker suitable for medium and high voltages, assisted by a control circuit, which has a particularly efficient mechanical part.

Un but complémentaire de la présente invention consiste à fournir un disjoncteur hyper rapide du type susmentionné dont les parties mobiles présentant un mo­ment d'inertie réduit par rapport à ce qui est connu dans l'état de la technique.An additional aim of the present invention consists in providing a hyper fast circuit breaker of the above-mentioned type, the moving parts of which have a reduced moment of inertia compared to what is known in the prior art.

Un autre but complémentaire de la présente inven­ tion vise à fournir un disjoncteur hyper rapide perfor­mant, de construction particulièrement simple qui est robuste et malgré tout peu onereux.Another purpose complementary to the present invention tion aims to provide a high-speed, high-performance circuit breaker, of particularly simple construction which is robust and nevertheless inexpensive.

Principe de l'inventionPrinciple of the invention

Selon la présente invention, le disjoncteur hyper rapide assité par un circuit de commande à semi-conduc­teurs, comportant une bobine de répulsion, un disque de répulsion associé à un pont de contact portant les con­tacts mobiles, ledit disque de répulsion collaborant avec ladite bobine de répulsion, et un moyen de maintien des contacts à l'état fermé, est caractérisé en ce que le moyen de maintien consiste en un ressort de maintien agissant sur la disque de répulsion associé au pont de contact via un moyen de retenue agissant sur ledit dis­que de répulsion, moyen de retenue qui exerce une pres­sion suffisante pour résister à une pression de contact imposée et qui est agencé de manière rétractable lors de la répulsion du disque sous l'effet de la bobine de ré­pulsion.According to the present invention, the super fast circuit breaker connected by a semiconductor control circuit, comprising a repulsion coil, a repulsion disc associated with a contact bridge carrying the movable contacts, said repulsion disc collaborating with said coil. repulsion, and a means for maintaining the contacts in the closed state, is characterized in that the holding means consists of a retaining spring acting on the repulsion disc associated with the contact bridge via a retaining means acting on said disc repulsion, retaining means which exerts sufficient pressure to resist an imposed contact pressure and which is arranged retractably during the repulsion of the disc under the effect of the repulsion coil.

Lors de l'armement le ressort de maintien est écrasé et le disjoncteur est armé par l'action d'air comprimé. Dès la fin de l'armement, le ressort de main­tien peut libérer toute son énergie pour appliquer le pont de contact et donc les contacts mobiles contre les contacts fixes. Il est bien évident que pour vaincre la répulsion électro-dynamique et en vue de limiter la for­mation de pré-arcs entre les contacts fixes et mobiles, il y a lieu de prévoir un ressort, de préférence pre­comprimé, suffisamment puissant.During arming the retaining spring is crushed and the circuit breaker is armed by the action of compressed air. At the end of arming, the retaining spring can release all of its energy to apply the contact bridge and therefore the movable contacts against the fixed contacts. It is quite obvious that in order to overcome the electro-dynamic repulsion and in order to limit the formation of pre-arcs between the fixed and mobile contacts, it is necessary to provide a spring, preferably precompressed, sufficiently powerful.

Selon une forme d'exécution de la présente inven­tion, le disque de répulsion comporte, du côté opposé à celui qui est associé au pont de contact, une queue sur laquelle agit le moyen de retenue.According to an embodiment of the present invention, the repulsion disc comprises, on the side opposite to that which is associated with the contact bridge, a shank on which the retaining means acts.

Avantageusement, le moyen de retenue consiste en une pluralité de billes ou galets, de préférence deux ou quatre billes ou galets, appliqués sous pression, éven­tuellement à l'aide d'un ressort, contre ladite queue solidaire du disque de répulsion de préférence selon des axes orientés perpendiculairement à l'axe de la queue.Advantageously, the retaining means consists of a plurality of balls or rollers, preferably two or four balls or rollers, applied under pressure, possibly using a spring, against said tail secured to the repulsion disc preferably along axes oriented perpendicular to the axis of the tail.

Selon une forme d'exécution préférée, la queue comporte une surface tronconique allant en augmentant en s'écartant du disque de répulsion, ou des plans inclinés s'écartant de l'axe de ladite queue en s'éloignant du disque de répulsion, l'extrémité de la surface tronconi­que ou des plans inclinés, proche du disque de répulsion étant munie d'un épaulement servant de butée de logement des billes ou galets, et l'extrémité de la surface tron­conique ou des plans inclinés, éloignée du disque de ré­pulsion comportant une gorge de logement des billes ou galets, la distance séparant l'épaulement de la gorge correspondant essentiellement à la course des contacts mobiles.According to a preferred embodiment, the tail has a frustoconical surface which increases while moving away from the repulsion disc, or inclined planes which deviate from the axis of said tail while moving away from the repulsion disc, l end of the frustoconical surface or inclined planes, close to the repulsion disc being provided with a shoulder serving as a stop for housing the balls or rollers, and the end of the frustoconical surface or inclined planes, remote from the repulsion disc comprising a groove for housing the balls or rollers, the distance separating the shoulder from the groove essentially corresponding to the travel of the movable contacts.

On constate aisément que la pièce mobile qui doit être soumise à des accélérations importantes lors de la rupture des contacts, par exemple en cas de court-cir­cuit, se réduit à une pièce légère de faible moment d'i­nertie comportant simplement le disque de répulsion as­socié au pont de contact et à la queue. On peut évidem­ment encore améliorer la comportement de cette pièce mo­bile en choisissant un matériau métallique léger appro­prié.It can easily be seen that the moving part which must be subjected to significant accelerations during the breaking of the contacts, for example in the event of a short circuit, is reduced to a light part of low moment of inertia simply comprising the associated repulsion disc. at the contact bridge and at the tail. Obviously, the behavior of this moving part can still be improved by choosing an appropriate light metallic material.

Avantageusement, le dispositif selon la présente invention comporte un moyen d'amortissement qui amortit le mouvement brusque du disque de répulsion associé à sa queue, lors de la coupure du circuit électrique, c'est-­à-dire lors de la répulsion par la bobine de répulsion. En effet, si avec les disjoncteurs du type connu, on at­teignait des accélérations importantes de la partie mo­bile, on a atteint, lors d'essais prélmiminaires du dis­joncteur conforme à la présente invention, des accéléra­tions supérieures à 30.000 g. On comprend alors aisément que, en vue d'éviter une destruction de l'appareil, il est nécessaire de prévoir au moins un amortisseur adé­quat.Advantageously, the device according to the present invention comprises a damping means which dampens the sudden movement of the repulsion disc associated with its tail, during the interruption of the electrical circuit, that is to say during the repulsion by the coil. of repulsion. Indeed, if with the circuit breakers of the known type, significant accelerations of the movable part were reached, we reached, during preliminary tests of the circuit breaker according to the present invention, accelerations greater than 30,000 g. It is therefore easy to understand that, in order to avoid destruction of the device, it it is necessary to provide at least one adequate shock absorber.

À l'état de repos, c'est-à-dire contacts ouverts disjoncteur non armé, le ressort de maintien est précom­primé alors que le disque de répulsion se trouve en po­sition écartée des contacts fixes, c'est-à-dire que les billes ou galets sont appliqués sur la queue, à proximi­té du disque de répulsion, à savoir contre l'épaulement servant de butée de logement. Pour armer le disjoncteur représenté à titre exemplatif dans les figures, on in­troduit de l'air sous pression dans une chambre adéqua­te, qui comprime le ressort de maintien et déplace les billes ou galets de retenue le long de la surface tron­conique ou le long des plans inclinés, le disque de ré­pulsion étant retenu par une butée, jusqu'à ce que cel­les-ci ou ceux-ci s'engagent dans la gorge de logement à l'extrémité libre de la queue solidaire dudit disque de répulsion.In the rest state, that is to say open contacts, unarmed circuit breaker, the retaining spring is precompressed while the repulsion disc is in a position separated from the fixed contacts, that is to say that the balls or rollers are applied to the tail, near the repulsion disc, namely against the shoulder serving as a housing stop. To arm the circuit breaker shown by way of example in the figures, pressurized air is introduced into an adequate chamber, which compresses the retaining spring and moves the retaining balls or rollers along the frustoconical surface or along the planes inclined, the repulsion disc being retained by a stop, until these or these engage in the housing groove at the free end of the tail secured to said repulsion disc.

La fermeture du circuit électrique, c'est-à-dire la fermeture du disjoncteur doit s'effectuer de manière rapide et avec une force relativement importante en vue d'éviter la formation de pré-arcs et en vue de vaincre les forces de répulsion électro-dynamiques. Grâce à la libération de l'air comprimé, de préférence par mise à l'atmosphère, le ressort de maintien libère tout son é­nergie et applique le pont de contact avec ses contacts mobiles contre les contacts fixes par l'intermdiaire des billes ou galets logées dans ladite gorge de logement en bout de queue.The closing of the electrical circuit, that is to say the closing of the circuit breaker must be carried out quickly and with a relatively large force in order to avoid the formation of pre-arcs and in order to overcome the forces of repulsion electro-dynamic. Thanks to the release of compressed air, preferably by venting, the retaining spring releases all of its energy and applies the contact bridge with its movable contacts against the fixed contacts by means of the balls or rollers housed in said housing groove at the end of the tail.

Lorsque la bobine de répulsion est excitée, les contacts fixes et mobiles sont séparés brusquement grâce à l'écartement brusque du disque de répulsion dont la queue s'appuie sur un moyen d'amortissement, les billes ou galets étant brusquement écartés et délogés de la gorge pour venir se loger, en fin de course du disque contre l'épaulement proche du disque de répulsion. Le ressort de maintien n'est pas sollicité par la répulsion car la partie mobile s'échappe du système de maintien de la pression. L'inertie des parties en mouvement est donc différente selon le sens du mouvement; grande lorsque les contacts se ferment, minimale à leur ouverture.When the repulsion coil is energized, the fixed and movable contacts are suddenly separated by the sudden separation of the repulsion disc, the tail of which rests on a damping means, the balls or rollers being suddenly separated and dislodged from the groove to come to be housed, at the end of travel of the disc against the shoulder close to the repulsion disc. The retaining spring is not stressed by repulsion because the moving part escapes from the pressure maintenance system. The inertia of the moving parts is therefore different depending on the direction of movement; large when the contacts close, minimal when opened.

Brève description des figuresBrief description of the figures

  • - la figure 1 représente le disjoncteur conforme à la présente invention, en coupe longitudina­le, en positio de repos; et- Figure 1 shows the circuit breaker according to the present invention, in longitudinal section, in rest position; and
  • - la figure 2 est une coupe longitudinale analogue à la précédente, la partie gauche étant repré­sentée à l'état armé et la partie droite à l'état fermé.- Figure 2 is a longitudinal section similar to the previous one, the left part being shown in the armed state and the right part in the closed state.
Description détaillée d'une forme d'exécution préféréeDetailed description of a preferred embodiment

Dans les figures, des repères de références iden­tiques représentent des éléments identiques ou analo­gues.In the figures, identical reference marks represent identical or analogous elements.

Le disjoncteur 1 conforme à la présente invention comporte un cylindre 3 obturé à une extrémité par un couvercle de fond 5 qui y est fixé par l'intermédiaire d'une bride 7, d'une bague 9 logée dans une gorge cor­respondante 11 dudit cylindre, le couvercle étant serré moyennant des vis ou adéquats 13, et obturé à l'autre extrémité par un deuxième couvercle 15 qui y est fixé de manière analogue par une bride 17, une bague 19 et des vis ou boulons 21.The circuit breaker 1 according to the present invention comprises a cylinder 3 closed at one end by a bottom cover 5 which is fixed thereto by means of a flange 7, a ring 9 housed in a corresponding groove 11 of said cylinder, the cover being tightened by means of screws or suitable 13, and closed at the other end by a second cover 15 which is fixed thereto in a similar manner by a flange 17, a ring 19 and screws or bolts 21.

Ledit cyclindre 3 comporte, à l'intérieur, un piston 25 qui peut coulisser dans celui-ci, et une res­sort de maintien 27 qui s'appuie sur le couvercle de fond 5 et sur un épaulement 29 pratiqué dans ledit pis­ton. Ledit piston est surmonté d'un fourreau 31 qui tra­verse le couvercle 15 dans son ouverture centrale cor­respondante 16. Ledit fourreau 31 est surmonté, à son extrémité libre, du moyen de retenue portant le repère général 33.Said cylinder 3 comprises, inside, a piston 25 which can slide therein, and a retaining spring 27 which is supported on the bottom cover 5 and on a shoulder 29 formed in said piston. Said piston is surmounted by a sheath 31 which passes through the cover 15 in its corresponding central opening 16. Said sheath 31 is surmounted, at its free end, by retaining means bearing the mark general 33.

Le disjoncteur conforme à la présente invention est surmonté d'une bobine de répulsion 35 avantageuse­ment coulée dans une résine 35′, le tout étant assemblé par des boulons ou tiges filetées 36.The circuit breaker according to the present invention is surmounted by a repulsion coil 35 advantageously cast in a resin 35 ′, the whole being assembled by bolts or threaded rods 36.

Il comporte encore un disque de répulsion 37 as­socié à un pont de contact 39 portant les contacts mobi­les 41, et à une queue 43 décrite plus en détail ci-­après.It also includes a repulsion disc 37 associated with a contact bridge 39 carrying the movable contacts 41, and with a shank 43 described in more detail below.

Le moyen de retenue 33 monté sur l'extrémité du fourreau 31 par vissage par exemple comporte une plura­lité de billes ou galets 51 qui sont appliqués contre la queue 43 du disque de répulsion 37 moyennant une pres­sion réglable. En effet, un pousseur 53 actionné par un ressort 55 logé dans un guide 57, de préférence cylin­drique, obturé par un couvercle 59, et muni d'une butée 61 empêchant l'enfoncement du pousseur, appuie sur une bille ou galet 51.The retaining means 33 mounted on the end of the sleeve 31 by screwing for example comprises a plurality of balls or rollers 51 which are applied against the tail 43 of the repulsion disc 37 by means of an adjustable pressure. Indeed, a pusher 53 actuated by a spring 55 housed in a guide 57, preferably cylindrical, closed by a cover 59, and provided with a stop 61 preventing the pushing-in of the pusher, presses on a ball or roller 51.

La queue 43 est rendue solidaire du disque de ré­pulsion 37. Selon une première forme d'exécution, la queue 43 se présente sous forme d'une surface tronconi­que 61 munie à l'extrémité proche du disque de répulsion 37 d'un épaulement 63 et, à l'extrémité libre, d'une gorge 65. Dans cette forme d'exécution utilisée en asso­ciation avec des billes 51, le disque de répulsion est libre de tourner autour de son axe 38, ce qui permet de réduire l'usure locale des contacts mobiles 41.The tail 43 is made integral with the repulsion disc 37. According to a first embodiment, the tail 43 is in the form of a frustoconical surface 61 provided at the close end of the repulsion disc 37 with a shoulder 63 and , at the free end, of a groove 65. In this embodiment used in association with balls 51, the repulsion disc is free to rotate about its axis 38, which makes it possible to reduce local wear movable contacts 41.

Selon une autre forme d'exécution, la queue 43 comporte de préférence 4 plans inclinés 61 qui s'écar­tent de l'axe 38 en s'éloignant du disque de répulsion 37. Dans cette forme d'exécution utilisée en association avec des galets 51, la pression spécifique par le moyen de retenue est diminée. Si, en outre, on désire réduire l'usure des contacts mobiles, on peut, après un certain nombre de manoeuvre tourner le disque de 90° par exem­ple, si quatre galets ont été prévus.According to another embodiment, the tail 43 preferably has 4 inclined planes 61 which deviate from the axis 38 away from the repulsion disc 37. In this embodiment used in association with rollers 51 , the specific pressure by the retaining means is reduced. If, in addition, it is desired to reduce the wear of the movable contacts, it is possible, after a certain number of operations to turn the disc by 90 ° for example, if four rollers have been provided.

Dans la forme d'exécution représentée, le dis­ joncteur comporte encore un amortisseur monté à l'inté­rieur d'un guide axial 69 solidarisé au couvercle de fond 5.In the embodiment shown, the dis the trunk also includes a shock absorber mounted inside an axial guide 69 secured to the bottom cover 5.

A l'état de repos (figure 1), le ressort 27 qui est de préférence précomprimé maintient le piston 23 et, de ce fait, le fourreau 31 en position haute, le disque de répulsion se trouvant en position basse, éloigné de la bobine de répulsion, en s'appuyant sur les billes ou galets 51 moyennant l'épaulement 63.In the rest state (FIG. 1), the spring 27 which is preferably precompressed keeps the piston 23 and, therefore, the sheath 31 in the high position, the repulsion disc being in the low position, away from the coil repulsion, by relying on the balls or rollers 51 by means of the shoulder 63.

Pour armer le disjoncteur conforme à la présente invention (partie gauche de la figure 2), il y a lieu d'introduire de l'air sous pression par le ou les con­duits 75 pratiqués dans le couvercle 15. La chambre dé­limitée par la paroi du cylindre 3, le couvercle 15 et le piston 25 se remplit d'air comprimé et sous la pres­sion ainsi exercée, le ressort de maintien 27 se compri­me et le piston 25 est abaissé entraînant avec lui le fourreau 31 et le moyen de retenue 33. Un joint d'étan­chéité 77 maintient l'étanchéité entre le fourreau 31 et le couvercle 15. Un autre joint d'étanchéité 79 est des­tiné à maintenir l'étanchéité entre le piston 25 et le cylindre 3.To arm the circuit breaker in accordance with the present invention (left part of FIG. 2), it is necessary to introduce pressurized air through the conduit or conduits 75 formed in the cover 15. The chamber delimited by the wall of the cylinder 3, the cover 15 and the piston 25 is filled with compressed air and under the pressure thus exerted, the retaining spring 27 is compressed and the piston 25 is lowered carrying with it the sleeve 31 and the retaining means 33. A seal 77 maintains the seal between the sleeve 31 and the cover 15. Another seal 79 is intended to maintain the seal between the piston 25 and the cylinder 3.

Afin d'empêcher que le moyen de retenue 33 n'en­traîne avec lui le disque de répulsion 37, vu la pres­sion des billes ou galets 51 sur une surface inclinée 61 par rapport à l'axe 38, ledit disque 37 est retenu par des butées fixes 83.In order to prevent the retaining means 33 from carrying with it the repulsion disc 37, given the pressure of the balls or rollers 51 on a surface inclined 61 relative to the axis 38, said disc 37 is retained by stops fixed 83.

Il y a lieu de noter que la paroi cylindrique du piston 25 joue également le rôle de butée mécanique du ressort 27 empêchant que celui-ci soit comprimé à spires jointives. La paroi cylindrique est encore dimensionnée de manière telle que, lorsque le ressort 27 est comprimé au maximum, les billes ou galets 51 s'engagent dans la gorge annulaire 65.It should be noted that the cylindrical wall of the piston 25 also acts as a mechanical stop for the spring 27 preventing it from being compressed with contiguous turns. The cylindrical wall is also dimensioned in such a way that, when the spring 27 is compressed to the maximum, the balls or rollers 51 engage in the annular groove 65.

Pour fermer le disjoncteur 1 conforme à la pré­sente invention dans les meilleures conditions, c'est-­à-dire relativement rapidement, il y a lieu de veiller à ce que le ressort de maintien 27 puisse rapidement libé­rer l'énergie emmagasinée. Pour ce faire, on peut mettre l'air comprimé à l'atmosphère par des conduits d'échap­pement 85. Dans ce cas, on limite la formation de pré-­arcs.To close the circuit breaker 1 according to the present invention in the best conditions, that is to say relatively quickly, care should be taken to that the retaining spring 27 can quickly release the stored energy. To do this, one can put compressed air to the atmosphere through exhaust pipes 85. In this case, the formation of pre-arcs is limited.

Le fourreau 31 solidaire dudit piston 25 entraîne avec lui, via le moyen de retenue, et plus particulière­ment les billes ou galets 51, la queue 43 et, partant, le disque de répulsion 37 jusqu'à ce que le pont de con­tact portant les contacts mobiles entre en contact avec les contacts fixes.The sleeve 31 integral with said piston 25 drives with it, via the retaining means, and more particularly the balls or rollers 51, the tail 43 and, consequently, the repulsion disc 37 until the contact bridge carrying the contacts movable contacts the fixed contacts.

La force du ressort 55 doit donc être suffissante pour maintenir les billes ou galets 51 dans la gorge 65 durant cette étape et pour assurer une pression de con­tact optimale.The force of the spring 55 must therefore be sufficient to maintain the balls or rollers 51 in the groove 65 during this step and to ensure optimum contact pressure.

Supposons à présent que le courant croît de ma­nière inadmissible dans le circuit électrique dans le­quel est inséré le disjoncteur conforme à la présente invention. Dans ce cas, le circuit éléctrique de comman­de envoie une ogive de courant dans la bobine de répul­sion 35. Il en résulte l'établissement d'une force de répulsion particulièrement élevée agissant sur le disque 37. Cette force élevée permet de déloger les billes ou galets 51 de la gorge 65 par écrasement du ressort 55. Le disque de répulsion associé au pont de contact 39 et à la queue 43 subit ainsi une accélération particulière­ment élevée; ce qui réduit le risque de formation d'arc et d'usure des contacts.Suppose now that the current increases unacceptably in the electrical circuit in which is inserted the circuit breaker according to the present invention. In this case, the electrical control circuit sends a current warhead into the repulsion coil 35. This results in the establishment of a particularly high repulsion force acting on the disc 37. This high force makes it possible to dislodge the balls or rollers 51 of the groove 65 by crushing the spring 55. The repulsion disc associated with the contact bridge 39 and the shank 43 thus undergoes a particularly high acceleration; which reduces the risk of arcing and contact wear.

Le disque de répulsion ainsi accéleré doit égale­ment être freiné. Le rôle de freinage est joué par l'a­mortisseur 67 et par les billes ou galets 51 qui permet­tent également un logement du disque 37 dans la position de repos de la figure 1 grâce à l'épaulement 63.The accelerated repulsion disc must also be braked. The braking role is played by the damper 67 and by the balls or rollers 51 which also allow the disc 37 to be housed in the rest position of FIG. 1 thanks to the shoulder 63.

Dans les figures, on a représenté un pont de con­tact associé au disque de répulsion moyennant un pied 91. Dans ce cas, la bobine de répulsion 35 présente avantageusement un diamètre proche de celui du disque de répulsion. Dans la mesure où l'on désire une self plus importante, on peut prévoir une bobine 35 surdimension­née par rapport au diamètre du disque de répulsion 37.In the figures, there is shown a contact bridge associated with the repulsion disc by means of a foot 91. In this case, the repulsion coil 35 advantageously has a diameter close to that of the disc of repulsion. Insofar as a larger self is desired, a coil 35 may be provided which is oversized with respect to the diameter of the repulsion disc 37.

On peut toutefois également prévoir que le pont de contact et le disque de répulsion ne font qu'une seu­le pièce, les contacts mobils étant alors agencés sur la périphérie du disque de répulsion.However, it can also be provided that the contact bridge and the repulsion disc form a single piece, the movable contacts then being arranged on the periphery of the repulsion disc.

Il y a évidemment lieu de prévoir les tolérances et jeu nécessaires à un bon fonctionnement. Dans cet or­dre d'idée, on peut citer un jeu 93 destiné à rattraper l'usure des contacts.It is obviously necessary to provide the tolerances and play necessary for proper operation. In this order of idea, one can cite a clearance 93 intended to compensate for the wear of the contacts.

Le disjoncteur conforme à la présente invention peut être associé à tout circuit de commande électroni­que comportant une self servant de bobine de répulsion.The circuit breaker according to the present invention can be associated with any electronic control circuit comprising a choke serving as a repulsion coil.

Claims (10)

1. Disjoncteur hyper rapide assisté par un cir­cuit de commande à semi-conducteurs, comportant une bo­bine de répulsion, un disque de répulsion (37) associé à un pont de contact (39) portant les contacts mobiles 41), ledit disque de répulsion (37) collaborant avec ladite bobine de répulsion (35), et un moyen de maintien des contact à l'état fermé, caractérisé en ce que le moyen de maintien consiste en un ressort de maintien (27) agissant sur le disque de répulsion (37) associé au pont de contact (39) via un moyen de retenue (33) agis­sant sur le disque de répulsion (37) associé au pont de contact (39), moyen de retenue (37) qui exerce une pres­sion suffisante pour résister à une pression de contact imposée et qui est agencé de manière rétractable lors de la répulsion du disque (37) sous l'effet de la bobine de répulsion (35).1. Hyper-fast circuit breaker assisted by a semiconductor control circuit, comprising a repulsion coil, a repulsion disc (37) associated with a contact bridge (39) carrying the movable contacts 41), said repulsion disc ( 37) collaborating with said repulsion coil (35), and a means for maintaining the contacts in the closed state, characterized in that the holding means consists of a holding spring (27) acting on the repulsion disc (37 ) associated with the contact bridge (39) via a retaining means (33) acting on the repulsion disc (37) associated with the contact bridge (39), retaining means (37) which exerts sufficient pressure to withstand a contact pressure imposed and which is arranged in a retractable manner during the repulsion of the disc (37) under the effect of the repulsion coil (35). 2. Disjoncteur selon la revendication 1 caracté­risé en ce que le disque de répulsion (37) comporte, du côté opposé à celui qui est associé au pont de contact (39), une queue (43) sur laquelle agit le moyen de rete­nue (33).2. Circuit breaker according to claim 1 characterized in that the repulsion disc (37) comprises, on the side opposite to that which is associated with the contact bridge (39), a tail (43) on which acts the retaining means (33 ). 3. Disjoncteur selon la revendication 2 caracté­risé en ce que le moyen de retenue (33) consiste en une pluralité de billes ou galets (51) appliqués sous pres­sion contre la queue (43) solidaire du disque de répul­sion (37), de préférence selon des axes orientés perpen­diculairement à l'axe (38) de ladite queue (43).3. Circuit breaker according to claim 2 characterized in that the retaining means (33) consists of a plurality of balls or rollers (51) applied under pressure against the tail (43) integral with the repulsion disc (37), preferably according to axes oriented perpendicular to the axis (38) of said tail (43). 4. Disjoncteur selon l'une quelconque des reven­dications 2 ou 3 caractérisé en ce que la queue (43) as­sociée au disque de répulsion (37) comporte une surface tronconique (61) allant en augmentation en s'écartant du disque (37), ou des plans inclinés (61) par rapport à l'axe (38) s'écartant de celui-ci en s'éloignant dudit disque (37), l'extrémité de la surface tronconique ou des plans inclinés, proche du disque de répulsion (37) étant munie d'un épaulement (63) et l'extrémité opposée éloignée dudit disque comportant une gorge de logement (65) des billes ou galets (51), la distance séparant l'épaulement (63) de la gorge (65) correspondant essen­tiellement à la course des contacts mobiles (41).4. Circuit breaker according to any one of claims 2 or 3 characterized in that the tail (43) associated with the repulsion disc (37) has a frustoconical surface (61) increasing in diverging from the disc (37), or inclined planes (61) relative to the axis (38) deviating therefrom away from said disc (37), the end of the frustoconical surface or inclined planes, close to the repulsion disc (37) being provided with a shoulder (63) and the opposite end remote from said disc having a housing groove (65) for the balls or rollers (51), the distance separating the shoulder (63) of the groove (65) essentially corresponding to the travel of the movable contacts (41). 5. Disjoncteur selon l'une quelconque des reven­dications précédentes caractérisé en ce qu'il comporte un cylindre (3) obturé par un couvercle de fond (5) et par un couvercle (15) muni d'une ouverture axiale (16), un piston (25) surmonté d'un fourreau (31) traversant ladite ouverture axiale (16) et portant le moyen de re­tenue (33), un ressort de maintien (27) étant agencé en­tre le couvercle de fond (5) et un épualement (29) du piston et étant écrasable par l'action d'air comprimé dans l'espace compris entre la paroi du cylindre (3), le couvercle (15) comportant au moins un conduit d'admis­sion (75) et au moins un conduit d'échappement (85), et le piston (25), ledit espace comportant des joints d'é­tanchéité (79, 77) et au moins une butée d'amortissement (81), éventuellement de forme annulaire munie d'une ou­verture de passage radiale.5. Circuit breaker according to any one of the preceding claims, characterized in that it comprises a cylinder (3) closed by a bottom cover (5) and by a cover (15) provided with an axial opening (16), a piston (25) surmounted by a sheath (31) passing through said axial opening (16) and carrying the retaining means (33), a retaining spring (27) being arranged between the bottom cover (5) and an overlay ( 29) of the piston and being crushable by the action of compressed air in the space between the wall of the cylinder (3), the cover (15) comprising at least one intake duct (75) and at least one duct exhaust (85), and the piston (25), said space comprising seals (79, 77) and at least one damping stop (81), possibly of annular shape provided with a passage opening radial. 6. Disjoncteur selon l'une quelconque des reven­dications précédentes caractérisé en ce que le disque de répulsion fait office de pont de contact et porte les contacts mobiles.6. Circuit breaker according to any one of the preceding claims, characterized in that the repulsion disc acts as a contact bridge and carries the movable contacts. 7. Disjoncteur selon l'une quelconque des reven­dications là 5 caractérisé en ce que le pont de contact (39) est rendu solidaire du disque de répulsion (37) par l'intermédiaire d'un pied (91).7. Circuit breaker according to any one of claims 1 there, characterized in that the contact bridge (39) is made integral with the repulsion disc (37) by means of a foot (91). 8. Disjoncteur selon l'une quelconque des reven­dications précédentes caractérisé en ce qu'il comporte un moyen d'amortissement (67), collaborant avec la queue (43).8. Circuit breaker according to any one of the preceding claims, characterized in that it comprises a damping means (67), collaborating with the tail (43). 9. Disjoncteur selon l'une quelconque des reven­dications précédentes caractérisé en ce que la bobine de répulsion (35) est coulée dans une résine isolante (35′).9. Circuit breaker according to any one of the preceding claims, characterized in that the repulsion coil (35) is cast in an insulating resin (35 ′). 10. Disjoncteur selon la revendication 8 caracté­risé en ce que la queue (43) du contact mobile est elle-­même la partie mobile de l'amortisseur.10. Circuit breaker according to claim 8 characterized in that the tail (43) of the movable contact is itself the movable part of the damper.
EP88870113A 1988-06-27 1988-06-27 High speed circuit breaker actuated by a control device Expired - Lifetime EP0348584B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
ES88870113T ES2043893T3 (en) 1988-06-27 1988-06-27 HYPERFAST BREAKER ASSISTED BY A CONTROL CIRCUIT.
DE88870113T DE3883530T2 (en) 1988-06-27 1988-06-27 Fast switch operated by a trip circuit.
AT88870113T ATE93647T1 (en) 1988-06-27 1988-06-27 RAPID SWITCH ACTUATED BY A TRIP CIRCUIT.
EP88870113A EP0348584B1 (en) 1988-06-27 1988-06-27 High speed circuit breaker actuated by a control device
US07/371,223 US5059932A (en) 1988-06-27 1989-06-26 Quick-action circuit breaker assisted by a control circuit
FI893101A FI92264C (en) 1988-06-27 1989-06-26 Torque switch assisted via a control circuit
CA000603882A CA1315325C (en) 1988-06-27 1989-06-27 Control circuit assisted ultra-rapid cut-out

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88870113A EP0348584B1 (en) 1988-06-27 1988-06-27 High speed circuit breaker actuated by a control device

Publications (2)

Publication Number Publication Date
EP0348584A1 true EP0348584A1 (en) 1990-01-03
EP0348584B1 EP0348584B1 (en) 1993-08-25

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EP88870113A Expired - Lifetime EP0348584B1 (en) 1988-06-27 1988-06-27 High speed circuit breaker actuated by a control device

Country Status (7)

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US (1) US5059932A (en)
EP (1) EP0348584B1 (en)
AT (1) ATE93647T1 (en)
CA (1) CA1315325C (en)
DE (1) DE3883530T2 (en)
ES (1) ES2043893T3 (en)
FI (1) FI92264C (en)

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WO1991013452A1 (en) * 1990-02-23 1991-09-05 Acec Transport S.A. Quick-action circuit breaker

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DE4123673A1 (en) * 1991-07-17 1993-01-21 Leybold Durferrit Gmbh DEVICE FOR SWITCHING A HIGH CURRENT SUPPLY
FI104570B2 (en) 1997-09-19 2004-05-24 Valmet Corp Apparatus for cleaning a suspension, preferably a pulp suspension
SE9901627D0 (en) * 1999-05-03 1999-05-03 Asea Brown Boveri Switchgear
RU2770190C1 (en) * 2021-02-04 2022-04-14 Федеральное государственное бюджетное образовательное учреждение высшего образования Иркутский государственный университет путей сообщения (ФГБОУ ВО ИрГУПС) Power spark gap

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USRE26445E (en) * 1968-08-27 High speed circuit breaker with flip-flop mechanism
FR2121074A5 (en) * 1970-12-29 1972-08-18 Fuji Electric Co Ltd
FR2357048A1 (en) * 1976-06-28 1978-01-27 Merlin Gerin Current limiting switch - has movable contact connected to actuator by one way gears fitted with shock absorber
DE2919750A1 (en) * 1978-05-17 1979-11-22 Merlin Gerin PARALLEL CONNECTION DEVICE OF INVERTERS
EP0176455A1 (en) * 1984-09-07 1986-04-02 FERRAZ Société Anonyme Electromechanical circuit-breaking device
EP0184566A1 (en) * 1984-10-12 1986-06-11 S.A. Acec Transport Extremely fast circuit breaker assisted by semiconductors

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US3764944A (en) * 1972-07-06 1973-10-09 C Erven Spiral motor coil
US4209680A (en) * 1978-06-26 1980-06-24 Gould Inc. High speed actuating mechanism

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Publication number Priority date Publication date Assignee Title
USRE26445E (en) * 1968-08-27 High speed circuit breaker with flip-flop mechanism
FR2121074A5 (en) * 1970-12-29 1972-08-18 Fuji Electric Co Ltd
FR2357048A1 (en) * 1976-06-28 1978-01-27 Merlin Gerin Current limiting switch - has movable contact connected to actuator by one way gears fitted with shock absorber
DE2919750A1 (en) * 1978-05-17 1979-11-22 Merlin Gerin PARALLEL CONNECTION DEVICE OF INVERTERS
EP0176455A1 (en) * 1984-09-07 1986-04-02 FERRAZ Société Anonyme Electromechanical circuit-breaking device
EP0184566A1 (en) * 1984-10-12 1986-06-11 S.A. Acec Transport Extremely fast circuit breaker assisted by semiconductors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991013452A1 (en) * 1990-02-23 1991-09-05 Acec Transport S.A. Quick-action circuit breaker
AU653329B2 (en) * 1990-02-23 1994-09-29 Acec Transport S.A. Quick-action circuit breaker

Also Published As

Publication number Publication date
ES2043893T3 (en) 1994-01-01
EP0348584B1 (en) 1993-08-25
FI893101A (en) 1989-12-28
CA1315325C (en) 1993-03-30
DE3883530D1 (en) 1993-09-30
FI92264C (en) 1994-10-10
FI92264B (en) 1994-06-30
US5059932A (en) 1991-10-22
FI893101A0 (en) 1989-06-26
ATE93647T1 (en) 1993-09-15
DE3883530T2 (en) 1994-02-17

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