EP0244276A1 - Electrical switch for a protective device such as a circuit breaker - Google Patents

Electrical switch for a protective device such as a circuit breaker Download PDF

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Publication number
EP0244276A1
EP0244276A1 EP87400584A EP87400584A EP0244276A1 EP 0244276 A1 EP0244276 A1 EP 0244276A1 EP 87400584 A EP87400584 A EP 87400584A EP 87400584 A EP87400584 A EP 87400584A EP 0244276 A1 EP0244276 A1 EP 0244276A1
Authority
EP
European Patent Office
Prior art keywords
pseudo
fixed contact
movement
switch according
insulating
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
EP87400584A
Other languages
German (de)
French (fr)
Other versions
EP0244276B1 (en
Inventor
Elie Belbel
Félix Lameyre
Michel Lauraire
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.)
Telemecanique SA
Original Assignee
La Telemecanique Electrique SA
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Filing date
Publication date
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Publication of EP0244276A1 publication Critical patent/EP0244276A1/en
Application granted granted Critical
Publication of EP0244276B1 publication Critical patent/EP0244276B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • H01H13/18—Operating parts, e.g. push-button adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device
    • H01H89/08—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device with both devices using the same contact pair
    • H01H89/10—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device with both devices using the same contact pair with each device controlling one of the two co-operating contacts
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/32—Insulating body insertable between contacts

Definitions

  • the invention relates to an electrical switch device in an insulating housing, in particular for a circuit breaker device, in which each of the two conductive parts of the switch which are intended to be applied against one another or to be separated, can be moved independently of each other, depending on whether the opening operation is operated using a remote control electromagnet placed in the housing, or whether the opening operation results from a command manual or automatic operation of a mechanism triggered by monitoring means capable of detecting an overcurrent in the circuit of the switch.
  • Such devices are for example known from European patent application No. 103 022, which describes an industrial type device where a movable switch contact can be opened either by manual control or by the triggering of an armed mechanism; the movable armature of an electromagnet is here indirectly associated with an intermediate triggering mechanism so as to operate a remote-controlled opening, independently of the other possible modes of opening the circuit.
  • the present invention proposes to provide a switch device whose constitution meets that which is mentioned above, and where measures will be taken to make it benefit from the advantageous properties which are due to the implementation of a screen. able to quickly destabilize the electric arc appearing when opening.
  • the desired result is achieved thanks to the fact that: a pseudo-fixed contact which is carried by the periphery of a pivoting isolated sector, being connected to a frame of the remote control electromagnet and on which the movable contact controlled by the mechanism is radially supported, performs, during the excitation of this electromagnet, a lateral displacement which brings it opposite the underside of a concentric insulating partition placed in the vicinity of the periphery, - While a rotary insulating support moves in a manner substantially concentric with the sector to quickly introduce an insulating screen which it carries between separate contacts, and to make it pass over said partition.
  • an energy accumulator mechanism 3 In an insulating housing 2 is placed an energy accumulator mechanism 3 generally using the compression of springs not shown; an external operating member 4 allows this mechanism to take an armed state A, or disarmed D, to operate the voluntary closing and respectively opening of a switch 5, to the movable contact 6 of which it is mechanically connected by means 7 isolated transmissions.
  • the movable contact cooperates with a pseudo-fixed contact 8, which is carried by an insulated movable support 9 which can move between a working position T and a rest position R.
  • This possible displacement results from the presence of motion transmission means 10 which connect the support to the movable frame 11 of an electromagnet 12 of which only the coil 13 has been shown; the latter is connected to connection terminals 14, 15 by which it is possible to operate its excitation and its de-excitation.
  • a first flexible conductor 17 connects the pseudo-fixed contact 8 to an input terminal of the network 18 to allow the movements of the support, so that electrical continuity is ensured when the support takes the corresponding working position; when the electromagnet itself takes its rest position R, for example by the action of a return spring 37, the two contacts are separated.
  • the movable contact is in turn connected by a second flexible conductor 19 to a portion 20 of the internal circuit 21 comprising one or more overcurrent detectors of different types, for example a coil 22 associated with a magnetizable plunger, paddle or striker core 23 and a bimetallic strip 24; the latter is itself connected to an output terminal 25 going to the load not shown.
  • a coil 22 associated with a magnetizable plunger, paddle or striker core 23 and a bimetallic strip 24 the latter is itself connected to an output terminal 25 going to the load not shown.
  • the bimetallic strip and / or the striker operate by means of unlocking means 26 an automatic triggering of the mechanism 3 which then takes its disarmed state D.
  • a breaking chamber 27 is associated with the switch so that arcs developed during the opening of the switch are quickly extinguished.
  • FIG. 2 shows a first embodiment 5a of the switch 5 in which the parts having functions identical to those just described, bear the same references.
  • the support 9 of the pseudo-fixed contact is represented here by an insulating sector 30 which can oscillate around a pivot 31 in the direction of the arrow G, when the electromagnet is, for example, de-energized. This rotation therefore brings the pad 32 of the movable contact 6 onto an insulating portion 33 of the support 9, while the periphery of the sector carrying this pseudo-fixed contact moves under the internal surface 56 of a partition 36.
  • the pseudo-fixed contact 8 here takes the form of a pellet of curved shape, the radius of which corresponds to that of the surface 33 and which is optionally extended by a concentric surface 35.
  • the wall or fixed partition 36 of the housing having a root 36 ⁇ and a curved shape placed substantially concentric with the pivot 31, extends to an end 38 close to the meeting area 39 of the contact pads; this partition can also be extended in the same way by a portion 40 shown in dotted lines, and an opening 41 then surrounds the area 39.
  • An insulating rotary part 42 able to oscillate around a pivot 43 adjacent to the pivot 31 or possibly concentric with it, comprises an arm 44 in the form of a sector, and a portion of cylinder constituting a thin screen 45 which is placed at the above the partition 36 opposite the external face 46 thereof opposite the pivot; the arm of this part 42 has on the opposite side 54 an actuation point such than 47, or a percussion surface such as 48, which can receive one a movement transmission part 49, or the other the end of a striker 50.
  • This striker 50 or this transmission part 49 can be constituted by the striker which is mentioned at 23 in FIG. 1, or indirectly transmit the movements of the latter.
  • the circulation of a very intense current in the coil 22 causes their displacement and a drive in direction J of the screen; such displacement is only possible if the contact pads are already separated by a sufficient distance to allow rapid passage of the end 51 of the screen.
  • a hinge point 52 connects the support 9 to a control rod 10 and the arm 42 here has a clearance 53 allowing it not to meet the pivot 31, see also FIG. 8.
  • the means implemented to operate the displacement of the pseudo-fixed contact in particular the electromagnet, can be deactivated so that a displacement of direction G of this pseudo-fixed contact is effected immediately after the appearance of a power failure which confirms the automatic opening of the switch.
  • the movements of the pseudo-fixed contact and of the screen are executed in the opposite direction (G, and respectively J), when a current fault occurs and the separation of the contacts operated by the support 30 is effected with friction tangentially, which can be advantageous for shearing areas of these possibly welded pads.
  • the movements of the insulating support piece 61 of the pseudo-fixed contact 8 b are guided by a pivot 62, movable parallel to itself, and comprising for example two coaxial pins 63, 64 each capable of moving in one of two parallel and adjusted guide grooves 65, 66, see also FIG. 6.
  • Each groove such as 65 comprises a first rectilinear portion 67 which is extended by a second curved portion 68; alternatively, a dotted groove 70 and inclined at an angle ⁇ relative to a straight line ⁇ passing through one of the pins 62 or articulation 71 and the contact zone, could also be used.
  • This connecting rod which circulates substantially parallel to the straight line ⁇ by means guide not shown, is in the position shown F illustrated when the armature of the electromagnet is applied against its cylinder head, and vice versa in position 0.
  • a tension spring such as 73 can be coupled to a point 74 of the support which is opposite the articulation relative to the pivot and to the housing 2 to serve as a return spring to the frame.
  • the contact support 61 When the connecting rod moves down in direction L, after de-energization of the electromagnet, the contact support 61 first moves parallel to itself in the same direction when the pin travels in the portion 67, which operates a radial separation of the contact pads; this first parallel stroke is followed by a second stroke during which the pin moves in the portion 68 and communicates to this support a rotation of direction G. The movement therefore makes the contacts benefit from a separation without friction, followed by '' a possible extension of the arc.
  • a screen 75 comparable to the previous 45 moves here in direction J in a manner comparable to that which has been described previously by passing over a fixed insulating partition 36 b .
  • the insulating support 81 of pseudo-fixed contact 8 c also has the shape of a sector having a central region 84 which is subjected to the action of a return spring in compression 83 placed between it and the housing 2 c .
  • This support also includes one or two substantially radial grooves 86, 86 ⁇ , which are crossed by a fixed guide pin 82 placed transversely, and an articulation point 91 linked to a connecting rod 92, see also FIG. 7.
  • the pseudo- contact fixed 8 c In the position shown F of the connecting rod which corresponds to the working state T of the electromagnet, the pseudo- contact fixed 8 c , the articulation point 91, the groove 86 and the pin 82 are substantially crossed by the straight line ⁇ , and a radial bearing face 94 of the support 81 tangentially meets a fixed stop 93 of the housing 2 c .
  • a thin insulating screen 101 carried by a sector 102 is pivoted around a pin 103 and has a spout 104 capable of receiving a flange 105, directly or indirectly linked to a striker (not shown), which is attracted by a coil crossed by very strong currents when short-circuit currents appear.
  • a pseudo-fixed contact support 98 d 8 here again has a groove 106, a hinge point 107 linked to a connecting rod 112, a bearing face 108 meeting a fixed stop 111 and a central region 109 cooperating with a spring of compression 110.
  • the screen 101 is placed in a half-space placed to the left of the right ⁇ , and moves ra also in direction G during an attraction of the flange caused by that of the striker.
  • this direction is here the same as that according to which the support 106 will pivot when the connecting rod 112 moves down from the figure to pass from its position F to its position 0.
  • the groove 106 could be given a slightly inclined orientation relative to the straight line ⁇ .

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  • Breakers (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Electromagnets (AREA)

Abstract

Un contact mobile (6) peut être séparé d'un contact pseudo-fixe (8) sur lequel il est appliqué, soit grâce au déplacement de moyens d'accouplement (10) du contact mobile, soit en raison du mouvement latéral qu'effectue un support (9) de ce contact pseudo-fixe sous l'action de moyens de liaison (10) associés à un électro-aimant de télécommande (12). Cet appareil est avantageusement utilisé dans les installations où des ouvertures manuelles, télécommandées ou automatiques peuvent être souhaitées.A movable contact (6) can be separated from a pseudo-fixed contact (8) to which it is applied, either due to the displacement of coupling means (10) of the movable contact, or due to the lateral movement that takes place. a support (9) for this pseudo-fixed contact under the action of connection means (10) associated with a remote control electromagnet (12). This device is advantageously used in installations where manual, remote-controlled or automatic openings may be desired.

Description

L'invention se rapporte à un appareil interrupteur élec­trique en boîtier isolant, en particulier pour appareil disjoncteur, dans lequel chacune des deux pièces conductri­ces de l'interrupteur qui sont destinées à être appliquées l'une contre l'autre ou à être séparées, peuvent être dépla­cées indépendamment l'une de l'autre, selon que la manoeuvre d'ouverture est opérée à l'aide d'un électro-aimant de télé­commande placé dans le boîtier, ou que l'opération d'ouver­ture résulte d'une commande manuelle ou du fonctionnement automatique d'un mécanisme déclenché par des moyens de surveillance aptes à détecter une surintensité dans le circuit de l'interrupteur.The invention relates to an electrical switch device in an insulating housing, in particular for a circuit breaker device, in which each of the two conductive parts of the switch which are intended to be applied against one another or to be separated, can be moved independently of each other, depending on whether the opening operation is operated using a remote control electromagnet placed in the housing, or whether the opening operation results from a command manual or automatic operation of a mechanism triggered by monitoring means capable of detecting an overcurrent in the circuit of the switch.

Le domaine d'application de tels appareils s'étend à des appareils de protection spécifiques jusqu'aux appareils disjoncteurs utilisés dans les systèmes de distribution industriels de divers calibres où il est souhaité pouvoir opérer l'ouverture d'un circuit selon l'un des deux modes précités.The field of application of such devices extends to specific protective devices up to circuit breaker devices used in industrial distribution systems of various calibers where it is desired to be able to operate the opening of a circuit according to one of the two aforementioned modes.

De tels appareils sont par exemple connus par la demande de brevet européen No 103 022, qui décrit un appareil de type industriel où un contact mobile d'interrupteur peut être ouvert soit par la voie d'une commande manuelle, soit grâce au déclenchement d'un mécanisme armé ; l'armature mobile d'un électro-aimant est ici indirectement associée à un mécanisme de déclenchement intermédiaire de façon à opérer une ouverture télécommandée, indépendamment des autres modes possibles d'ouverture du circuit.Such devices are for example known from European patent application No. 103 022, which describes an industrial type device where a movable switch contact can be opened either by manual control or by the triggering of an armed mechanism; the movable armature of an electromagnet is here indirectly associated with an intermediate triggering mechanism so as to operate a remote-controlled opening, independently of the other possible modes of opening the circuit.

On connaît également par exemple par le brevet FR 2 563 939 de la Demanderesse un appareil disjoncteur dont les applica­tions se situent dans le domaine de la distribution électri­que, et où un écran isolant rotatif est introduit rapidement entre deux contacts d'interrupteur venant de se séparer.Also known, for example from patent FR 2 563 939 of the Applicant, is a circuit breaker device whose applications are in the field of electrical distribution, and where a rotating insulating screen is quickly introduced between two switch contacts which have just separated .

La présente invention se propose de fournir un appareil interrupteur dont la constitution répond à celle qui est mentionnée ci-dessus, et où des mesures seront prises pour le faire bénéficier des intéressantes propriétés que l'on doit à la mise en oeuvre d'un écran apte à déstabiliser rapi­dement l'arc électrique apparaissant au moment d'une ouver­ture.The present invention proposes to provide a switch device whose constitution meets that which is mentioned above, and where measures will be taken to make it benefit from the advantageous properties which are due to the implementation of a screen. able to quickly destabilize the electric arc appearing when opening.

Selon l'invention, le résultat recherché est atteint grâce au fait que :
- un contact pseudo-fixe qui est porté par la périphérie d'un secteur isolé pivotant, se trouvant relié à une arma­ture de l'électro-aimant de télécommande et sur lequel s'appuie radialement le contact mobile commandé par le mécanisme, effectue, lors de l'excitation de cet électro-­aimant, un déplacement latéral qui l'amène en regard du dessous d'une cloison isolante concentrique placée au voisinage de la périphérie,
- tandis qu'un support isolant rotatif se déplace de façon sensiblement concentrique au secteur pour introduire rapidement un écran isolant qu'il porte entre des contacts séparés, et pour le faire passer au-dessus de ladite cloison.According to the invention, the desired result is achieved thanks to the fact that:
a pseudo-fixed contact which is carried by the periphery of a pivoting isolated sector, being connected to a frame of the remote control electromagnet and on which the movable contact controlled by the mechanism is radially supported, performs, during the excitation of this electromagnet, a lateral displacement which brings it opposite the underside of a concentric insulating partition placed in the vicinity of the periphery,
- While a rotary insulating support moves in a manner substantially concentric with the sector to quickly introduce an insulating screen which it carries between separate contacts, and to make it pass over said partition.

L'invention, ainsi que plusieurs modes de réalisation auxquels elle peut se prêter, seront mieux compris à la lecture de la description ci-dessous et à l'examen des figu­res annexées qui l'accompagnent, parmi lesquels :

  • La figure 1 représente de façon schématique un appa­reil selon l'invention ;
  • La figure 2 représente dans une coupe locale passant par le plan de mouvement des pièces de l'interrupteur, les éléments principaux d'un premier mode de réalisa­tion où le support de contact pseudo-fixe effectue un mouvement tangentiel ;
  • Les figures 3, 4 et 5 illustrent dans des vues en coupe locales analogues des variantes d'un second mode de réalisation où les supports de contacts pseudo-­fixes effectuent des mouvements composites ;
  • La figure 6 représente une vue de côté de l'interrup­teur selon la figure 3 coupé par un plan SSʹ qui passe sensiblement par la droite Δ ;
  • La figure 7 montre une vue de côté de l'interrupteur selon la figure 4 coupé par un plan VVʹ qui passe sensiblement par la droite Δ ; et
  • La figure 8 illustre une vue de côté de l'interrupteur selon la figure 2 coupé par un plan brisé P₁P₂P₃.
The invention, as well as several embodiments to which it can lend itself, will be better understood on reading the description below and on examining the appended figures which accompany it, among which:
  • Figure 1 schematically shows an apparatus according to the invention;
  • FIG. 2 represents in a local section passing through the plane of movement of the parts of the switch, the main elements of a first embodiment where the pseudo-fixed contact support performs a tangential movement;
  • FIGS. 3, 4 and 5 illustrate, in similar local cross-section views, variants of a second embodiment in which the pseudo-fixed contact supports carry out composite movements;
  • Figure 6 shows a side view of the switch according to Figure 3 cut by a plane SSʹ which passes substantially through the line Δ;
  • Figure 7 shows a side view of the switch according to Figure 4 cut by a plane VVʹ which passes substantially through the line Δ; and
  • Figure 8 illustrates a side view of the switch according to Figure 2 cut by a broken plane P₁P₂P₃.

Un appareil 1, dans lequel l'invention est mise en oeuvre, est illustré de façon schématique à la figure 1 pour rappe­ler la présence d'éléments qui ne seront pas illustrés en détail dans les figures suivantes, certains de ceux-ci étant connus en soi, et pouvant prendre des dispositions relatives différentes selon les applications envisagées.An apparatus 1, in which the invention is implemented, is illustrated schematically in Figure 1 to recall the presence of elements which will not be illustrated in detail in the following figures, some of these being known in itself, and can take different relative arrangements depending on the applications envisaged.

Dans un boîtier isolant 2 se trouve placé un mécanisme accumulateur d'énergie 3 utilisant généralement la compres­sion de ressorts non illustrés ; un organe de manoeuvre externe 4 permet de faire prendre à ce mécanisme un état armé A, ou désarmé D, pour opérer la fermeture et respec­tivement l'ouverture volontaire d'un interrupteur 5, au contact mobile 6 duquel il est mécaniquement relié par des moyens de transmissions 7 isolés.In an insulating housing 2 is placed an energy accumulator mechanism 3 generally using the compression of springs not shown; an external operating member 4 allows this mechanism to take an armed state A, or disarmed D, to operate the voluntary closing and respectively opening of a switch 5, to the movable contact 6 of which it is mechanically connected by means 7 isolated transmissions.

Le contact mobile coopère avec un contact pseudo-fixe 8, qui est porté par un support mobile 9 isolé pouvant se déplacer entre une position de travail T et une position de repos R. Ce possible déplacement résulte de la présence de moyens de transmissions de mouvement 10 qui relient le support à l'armature mobile 11 d'un électro-aimant 12 dont seule la bobine 13 a été représentée ; cette dernière est reliée à des bornes de raccordement 14, 15 grâce auxquelles on peut opérer son excitation et sa désexcitation.The movable contact cooperates with a pseudo-fixed contact 8, which is carried by an insulated movable support 9 which can move between a working position T and a rest position R. This possible displacement results from the presence of motion transmission means 10 which connect the support to the movable frame 11 of an electromagnet 12 of which only the coil 13 has been shown; the latter is connected to connection terminals 14, 15 by which it is possible to operate its excitation and its de-excitation.

Un premier conducteur souple 17 relie le contact pseudo-fixe 8 à une borne d'entrée du réseau 18 pour permettre les mouvements du support, de sorte que la continuité électrique est assurée lorsque le support prend la position de travail correspondante ; lorsque l'électro-aimant prend lui-même sa position de repos R, par exemple grâce à l'action d'un ressort de rappel 37, les deux contacts sont séparés.A first flexible conductor 17 connects the pseudo-fixed contact 8 to an input terminal of the network 18 to allow the movements of the support, so that electrical continuity is ensured when the support takes the corresponding working position; when the electromagnet itself takes its rest position R, for example by the action of a return spring 37, the two contacts are separated.

Le contact mobile est à son tour relié par un second conduc­teur souple 19 à une portion 20 du circuit interne 21 comprenant un ou plusieurs détecteurs de surintensités de différentes natures, par exemple un bobinage 22 associé à un noyau plongeur, palette ou percuteur magnétisable 23 et une bilame 24 ; cette dernière est elle-même reliée à une borne de sortie 25 allant vers la charge non représentée.The movable contact is in turn connected by a second flexible conductor 19 to a portion 20 of the internal circuit 21 comprising one or more overcurrent detectors of different types, for example a coil 22 associated with a magnetizable plunger, paddle or striker core 23 and a bimetallic strip 24; the latter is itself connected to an output terminal 25 going to the load not shown.

La bilame et/ou le percuteur opèrent grâce à des moyens de déverrouillage 26 un déclenchement automatique du mécanisme 3 qui prend alors son état désarmé D. Une chambre de coupure 27 est associée à l'interrupteur pour que des arcs dévelop­pés lors des ouvertures de l'interrupteur soient rapidement éteints.The bimetallic strip and / or the striker operate by means of unlocking means 26 an automatic triggering of the mechanism 3 which then takes its disarmed state D. A breaking chamber 27 is associated with the switch so that arcs developed during the opening of the switch are quickly extinguished.

La figure 2 représente un premier mode de réalisation 5 a de l'interrupteur 5 dans lequel les pièces ayant des fonctions identiques à celles qui viennent d'être décrites, portent les mêmes repères.2 shows a first embodiment 5a of the switch 5 in which the parts having functions identical to those just described, bear the same references.

Le support 9 du contact pseudo-fixe est représenté ici par un secteur isolant 30 qui peut osciller autour d'un pivot 31 dans le sens de la flèche G, lorsque l'électro-aimant est, par exemple, désexcité. Cette rotation amène donc la pastil­le 32 du contact mobile 6 sur une portion isolante 33 du support 9, tandis que la périphérie du secteur portant ce contact pseudo-fixe se déplace sous la surface interne 56 d'une cloison 36.The support 9 of the pseudo-fixed contact is represented here by an insulating sector 30 which can oscillate around a pivot 31 in the direction of the arrow G, when the electromagnet is, for example, de-energized. This rotation therefore brings the pad 32 of the movable contact 6 onto an insulating portion 33 of the support 9, while the periphery of the sector carrying this pseudo-fixed contact moves under the internal surface 56 of a partition 36.

Le contact pseudo-fixe 8 prend ici l'allure d'une pastille de forme courbe, dont le rayon correspond à celui de la surface 33 et qui est éventuellement prolongé par une surfa­ce 35 concentrique.The pseudo-fixed contact 8 here takes the form of a pellet of curved shape, the radius of which corresponds to that of the surface 33 and which is optionally extended by a concentric surface 35.

La paroi ou cloison fixe 36 du boîtier ayant une racine 36ʹ et une forme courbe placée de façon sensiblement concentri­que au pivot 31, se prolonge jusqu'à une extrémité 38 voisi­ne de la zone de rencontre 39 des pastilles de contact ; cette cloison peut également se prolonger de même façon par une portion 40 représentée en pointillé, et une ouverture 41 entoure alors la zone 39.The wall or fixed partition 36 of the housing having a root 36ʹ and a curved shape placed substantially concentric with the pivot 31, extends to an end 38 close to the meeting area 39 of the contact pads; this partition can also be extended in the same way by a portion 40 shown in dotted lines, and an opening 41 then surrounds the area 39.

Une pièce rotative isolante 42 apte à osciller autour d'un pivot 43 voisin du pivot 31 ou éventuellement concentrique à celui-ci, comporte un bras 44 en forme de secteur, et une portion de cylindre constituant un écran mince 45 qui est placé au-dessus de la cloison 36 en regard de la face exter­ne 46 de celle-ci opposé au pivot ; le bras de cette pièce 42 comporte du côté opposé 54 un point d'actionnement tel que 47, ou une surface de percussion telle que 48, qui peuvent recevoir l'un une pièce de transmission de mouvement 49, ou l'autre l'extrémité d'un percuteur 50.An insulating rotary part 42 able to oscillate around a pivot 43 adjacent to the pivot 31 or possibly concentric with it, comprises an arm 44 in the form of a sector, and a portion of cylinder constituting a thin screen 45 which is placed at the above the partition 36 opposite the external face 46 thereof opposite the pivot; the arm of this part 42 has on the opposite side 54 an actuation point such than 47, or a percussion surface such as 48, which can receive one a movement transmission part 49, or the other the end of a striker 50.

Ce percuteur 50 ou cette pièce de transmission 49 peuvent être constitués par le percuteur qui est mentionné en 23 à la figure 1, ou transmettre indirectement les mouvements de ce dernier. Dans les deux cas, la circulation d'un courant très intense dans la bobine 22 provoque leur déplacement et un entraînement en sens J de l'écran ; un tel déplacement n'est possible que si les pastilles de contact sont déjà séparées d'un intervalle suffisant pour permettre le passage rapide de l'extrémité 51 de l'écran. Un point d'articulation 52 relie le support 9 à une bielle de commande 10 et le bras 42 comporte ici un dégagement 53 lui permettant de ne pas rencontrer le pivot 31, voir aussi la figure 8.This striker 50 or this transmission part 49 can be constituted by the striker which is mentioned at 23 in FIG. 1, or indirectly transmit the movements of the latter. In both cases, the circulation of a very intense current in the coil 22 causes their displacement and a drive in direction J of the screen; such displacement is only possible if the contact pads are already separated by a sufficient distance to allow rapid passage of the end 51 of the screen. A hinge point 52 connects the support 9 to a control rod 10 and the arm 42 here has a clearance 53 allowing it not to meet the pivot 31, see also FIG. 8.

On sait que la diminution de section ou l'allongement rapi­des d'un arc électrique sont accompagnés d'une augmentation rapide de sa tension, de sorte que l'on assiste à une limi­tation très efficace des courants de court-circuit lorsqu'un écran isolant vient opérer la déstabilisation de cet arc.It is known that the rapid reduction in section or elongation of an electric arc is accompanied by a rapid increase in its voltage, so that there is a very effective limitation of short-circuit currents when a screen insulator operates to destabilize this arc.

Des mesures annexes qui sont relatives à la vitesse que doit prendre cet écran et aux moyens et qui permettent d'opérer un étranglement efficace de l'arc, ne font pas l'objet de la présente demande, mais peuvent être naturellement appli­quées au présent dispositif interrupteur.Additional measures which relate to the speed which this screen must take and to the means and which make it possible to effect effective throttling of the arc, are not the subject of the present request, but can be naturally applied to the present device. light switch.

Les moyens mis en oeuvre pour opérer le déplacement du contact pseudo-fixe, en particulier l'électro-aimant, peuvent être désactivés pour qu'un déplacement de sens G de ce contact pseudo-fixe soit opéré immédiatement après l'apparition d'un défaut de courant ce qui confirme ainsi l'ouverture automatique de l'interrupteur.The means implemented to operate the displacement of the pseudo-fixed contact, in particular the electromagnet, can be deactivated so that a displacement of direction G of this pseudo-fixed contact is effected immediately after the appearance of a power failure which confirms the automatic opening of the switch.

Une telle mesure obligera donc, si l'on veut rétablir le circuit, à opérer, d'une part, un réarmement du mécanisme 3 et, d'autre part, à rétablir une excitation de l'électro-­aimant si celle-ci a été interrompue.Such a measure will therefore require, if we want to restore the circuit, to operate, on the one hand, a rearming of the mechanism 3 and, on the other hand, to restore an excitation of the electromagnet if it has been interrupted.

Dans le mode de réalisation qui vient d'être décrit, les mouvements du contact pseudo-fixe et de l'écran sont exécu­tés en sens inverse (G, et respectivement J), lors de l'apparition d'un défaut de courant et la séparation des contacts opérée par le support 30 s'effectue avec frottement de façon tangentielle, ce qui peut présenter un avantage pour opérer le cisaillement de zones de ces pastilles éven­tuellement soudées.In the embodiment which has just been described, the movements of the pseudo-fixed contact and of the screen are executed in the opposite direction (G, and respectively J), when a current fault occurs and the separation of the contacts operated by the support 30 is effected with friction tangentially, which can be advantageous for shearing areas of these possibly welded pads.

Si l'on donne la préférence à une séparation radiale des contacts, ce qui évite une usure par frottement et une éven­tuelle métallisation des portions isolantes telles que 33, voir figure 1, on peut s'orienter vers l'un de deux modes de réalisation illustrés aux figures 3, 4 ou 5.If preference is given to a radial separation of the contacts, which avoids wear by friction and possible metallization of the insulating portions such as 33, see FIG. 1, one can move towards one of two embodiments illustrated in Figures 3, 4 or 5.

Dans la variante de réalisation 60 de l'interrupteur 5b visible à la figure 3, les mouvements de la pièce isolante de support 61 du contact pseudo-fixe 8b sont guidés par un pivot 62, mobile parallèlement à lui-même, et comprenant par exemple deux tourillons coaxiaux 63, 64 susceptibles de se déplacer chacun dans l'une de deux rainures de guidage parallèles et ajustées 65, 66, voir aussi figure 6.In the alternative embodiment 60 of the switch 5 b visible in FIG. 3, the movements of the insulating support piece 61 of the pseudo-fixed contact 8 b are guided by a pivot 62, movable parallel to itself, and comprising for example two coaxial pins 63, 64 each capable of moving in one of two parallel and adjusted guide grooves 65, 66, see also FIG. 6.

Chaque rainure telle que 65 comprend une première portion rectiligne 67 qui se prolonge par une seconde portion courbe 68 ; en variante, une rainure 70 en pointillés et inclinée d'un angle α par rapport à une droite Δ passant par l'un des tourillons 62 ou articulation 71 et la zone de contact, pourrait également être utilisée.Each groove such as 65 comprises a first rectilinear portion 67 which is extended by a second curved portion 68; alternatively, a dotted groove 70 and inclined at an angle α relative to a straight line Δ passing through one of the pins 62 or articulation 71 and the contact zone, could also be used.

Un point d'articulation 71 du support 61 qui est placé entre le pivot 62 et le contact pseudo-fixe 8b, reçoit une extré­mité d'une bielle d'accouplement 72 liée à une armature d'électro-aimant non représenté. Cette bielle qui circule sensiblement parallèlement à la droite Δ grâce à des moyens de guidage non représentés, se trouve dans la position représentée F illustrée lorsque l'armature de l'électro-­aimant est appliquée contre sa culasse, et inversement en position 0. Un ressort de traction tel que 73 peut être accouplé à un point 74 du support qui est opposé à l'articu­lation par rapport au pivot et au boîtier 2 pour servir de ressort de rappel à l'armature.A hinge point 71 of the support 61 which is placed between the pivot 62 and the pseudo-fixed contact 8b receives one end of a coupling rod 72 connected to a frame not shown electromagnet. This connecting rod which circulates substantially parallel to the straight line Δ by means guide not shown, is in the position shown F illustrated when the armature of the electromagnet is applied against its cylinder head, and vice versa in position 0. A tension spring such as 73 can be coupled to a point 74 of the support which is opposite the articulation relative to the pivot and to the housing 2 to serve as a return spring to the frame.

Lorsque la bielle se déplace vers le bas en sens L, après une désexcitation de l'électro-aimant, le support de contact 61 se déplace d'abord parallèlement à lui-même dans le même sens lorsque le tourillon circule dans la portion 67, ce qui opère une séparation radiale des pastilles de contact ; cette première course parallèle est suivie d'une seconde course au cours de laquelle le tourillon se déplace dans la portion 68 et communique à ce support une rotation de sens G. Le mouvement fait donc bénéficier les contacts d'une séparation sans frottement, suivie d'un allongement de l'arc éventuel.When the connecting rod moves down in direction L, after de-energization of the electromagnet, the contact support 61 first moves parallel to itself in the same direction when the pin travels in the portion 67, which operates a radial separation of the contact pads; this first parallel stroke is followed by a second stroke during which the pin moves in the portion 68 and communicates to this support a rotation of direction G. The movement therefore makes the contacts benefit from a separation without friction, followed by '' a possible extension of the arc.

Un écran 75 comparable au précédent 45 se déplace ici en sens J d'une façon comparable à celle qui a été décrite précédemment en passant au-dessus d'une cloison isolante fixe 36b.A screen 75 comparable to the previous 45 moves here in direction J in a manner comparable to that which has been described previously by passing over a fixed insulating partition 36 b .

Dans la variante de réalisation 80 illustrée à la figure 4, le support isolant 81 de contact pseudo-fixe 8c présente encore la forme d'un secteur ayant une région centrale 84 qui est soumise à l'action d'un ressort de rappel en compression 83 placé entre elle et le boîtier 2c.In the alternative embodiment 80 illustrated in FIG. 4, the insulating support 81 of pseudo-fixed contact 8 c also has the shape of a sector having a central region 84 which is subjected to the action of a return spring in compression 83 placed between it and the housing 2 c .

Ce support comporte en outre une ou deux rainures 86, 86ʹ sensiblement radiales, qui sont traversées par une goupille de guidage 82 fixe placée transversalement, et un point d'articulation 91 lié à une bielle 92, voir aussi figure 7.This support also includes one or two substantially radial grooves 86, 86ʹ, which are crossed by a fixed guide pin 82 placed transversely, and an articulation point 91 linked to a connecting rod 92, see also FIG. 7.

Dans la position représentée F de la bielle qui correspond à l'état de travail T de l'électro-aimant, le contact pseudo-­ fixe 8c, le point d'articulation 91, la rainure 86 et la goupille 82 sont sensiblement traversés par la droite Δ, et une face d'appui radiale 94 du support 81 rencontre tangen­tiellement une butée fixe 93 du boîtier 2c.In the position shown F of the connecting rod which corresponds to the working state T of the electromagnet, the pseudo- contact fixed 8 c , the articulation point 91, the groove 86 and the pin 82 are substantially crossed by the straight line Δ, and a radial bearing face 94 of the support 81 tangentially meets a fixed stop 93 of the housing 2 c .

Lorsque la bielle est déplacée vers le bas de la figure en direction du point 0 par le retour de l'électro-aimant à son état de repos R, la coopération entre la face 94 et la butée 93 communique au support 81 un mouvement initial de direc­tion δ qui est incliné par rapport à la droite Δ , et ensuite un déplacement angulaire en sens G, ce qui produit un résul­tat comparable à celui obtenu dans l'exemple précédent. La séparation des contacts est donc encore effectuée sans frot­tement.When the connecting rod is moved down the figure towards point 0 by the return of the electromagnet to its rest state R, the cooperation between the face 94 and the stop 93 communicates to the support 81 an initial movement of direction δ which is inclined with respect to the line Δ, and then an angular displacement in direction G, which produces a result comparable to that obtained in the previous example. The separation of the contacts is therefore still carried out without friction.

On retrouve encore ici une cloison isolante fixe 36c et un écran mobile 95 qui se déplace en sens J lors d'une ouvertu­re automatique des contacts.Here again we find a fixed insulating partition 36 c and a movable screen 95 which moves in direction J during an automatic opening of the contacts.

Dans le mode de réalisation 100, selon la figure 5, qui dérive de celui de la figure 4, un mince écran isolant 101 porté par un secteur 102 se trouve pivoté autour d'une goupille 103 et présente un bec 104 apte à recevoir une collerette 105, lié directement ou indirectement à un percu­teur (non représenté), qui est attiré par une bobine traver­sée par des courants très intenses lors de l'apparition de courants de court-circuit.In embodiment 100, according to FIG. 5, which derives from that of FIG. 4, a thin insulating screen 101 carried by a sector 102 is pivoted around a pin 103 and has a spout 104 capable of receiving a flange 105, directly or indirectly linked to a striker (not shown), which is attracted by a coil crossed by very strong currents when short-circuit currents appear.

Un support 98 de contact pseudo-fixe 8d présente ici encore une rainure 106, un point d'articulation 107 lié à une bielle 112, une face d'appui 108 rencontrant une butée fixe 111 et une région centrale 109 coopérant avec un ressort de compression 110. Dans l'état F représenté de cette bielle, pour lequel l'électro-aimant est en position de travail T, et pour lequel la collerette 105 n'est pas attirée en sens L vers le bas de la figure, l'écran 101 se trouve placé dans un demi-espace placé à gauche de la droite Δ, et se déplace­ ra également en sens G lors d'une attraction de la colleret­te provoquée par celle du percuteur. Contrairement aux modes de réalisation précédents, ce sens est ici le même que celui selon lequel va pivoter le support 106 lorsque la bielle 112 se déplacera vers le bas de la figure pour passer de sa position F à sa position 0.A pseudo-fixed contact support 98 d 8 here again has a groove 106, a hinge point 107 linked to a connecting rod 112, a bearing face 108 meeting a fixed stop 111 and a central region 109 cooperating with a spring of compression 110. In the state F represented of this connecting rod, for which the electromagnet is in the working position T, and for which the flange 105 is not attracted in direction L towards the bottom of the figure, the screen 101 is placed in a half-space placed to the left of the right Δ, and moves ra also in direction G during an attraction of the flange caused by that of the striker. Unlike the previous embodiments, this direction is here the same as that according to which the support 106 will pivot when the connecting rod 112 moves down from the figure to pass from its position F to its position 0.

On pourrait en variante donner à la rainure 106 une orienta­tion légèrement inclinée par rapport à la droite Δ.Alternatively, the groove 106 could be given a slightly inclined orientation relative to the straight line Δ.

Claims (9)

1. Interrupteur électrique en boîtier isolant, en particulier pour un appareil disjoncteur, dans lequel une des deux pièces conductrices de l'interrupteur qui sont destinées à être appliquées l'une contre l'autre ou à être séparées, peut être déplacée par différentes voies, selon que la manoeuvre d'ouverture est opérée à l'aide d'un électro-aimant de télécommande placé dans le boîtier, ou que l'opération d'ouverture résulte d'une commande manuelle ou du fonctionnement automatique d'un mécanisme déclenché par des moyens de surveillance aptes à détecter une surintensité dans le circuit de l'interrupteur,
caractérisé en ce que :
- un contact pseudo-fixe (8) qui est porté par la périphérie d'un secteur isolé (9) pivotant, se trouvant relié à une armature (11) de l'électro-aimant (12) de télécommande et sur lequel s'appuie radialement le contact mobile (6) commandé par le mécanisme (3), effectue, lors de l'excita­tion de cet électro-aimant (12) un déplacement latéral qui l'amène en regard du dessous (56) d'une cloison isolante (36) sensiblement concentrique placée au voisinage de la périphérie,
- tandis qu'un support isolant (42) rotatif se déplace de façon sensiblement concentrique au secteur (9) pour intro­duire rapidement entre des contacts déjà séparés (8a, 6a), un écran isolant (45) qu'il porte et qui passe au-dessus de ladite cloison (36).1. Electrical switch in an insulating box, in particular for a circuit breaker device, in which one of the two conductive parts of the switch which are intended to be applied against one another or to be separated, can be moved by different ways , depending on whether the opening operation is carried out using a remote control electromagnet placed in the housing, or whether the opening operation results from a manual control or the automatic operation of a triggered mechanism by monitoring means capable of detecting an overcurrent in the circuit of the switch,
characterized in that:
- A pseudo-fixed contact (8) which is carried by the periphery of a pivoting isolated sector (9), being connected to a frame (11) of the electromagnet (12) of remote control and on which s' radially supports the movable contact (6) controlled by the mechanism (3), performs, when this electromagnet (12) is energized, a lateral displacement which brings it opposite the underside (56) of an insulating partition (36) substantially concentric placed in the vicinity of the periphery,
- while an insulating support (42) rotatably moves substantially concentrically to the sector way (9) to rapidly introduce between contacts already separated (8a, 6a) an isolating screen (45) carries it and which passes over said partition (36). 2. Interrupteur électrique selon la revendication 1, caractérisé en ce que les déplacements du support de contact pseudo-fixe (9) sont uniquement rotatifs et amènent une portion isolante (33) de celui-ci en regard du contact mobile (6) par un mouvement tangentiel.2. Electric switch according to claim 1, characterized in that the displacements of the pseudo-fixed contact support (9) are only rotary and bring an insulating portion (33) thereof opposite the movable contact (6) by a tangential movement. 3. Interrupteur électrique selon la revendication 1, caractérisé en ce que les déplacements du support de contact pseudo-fixe (8b, 8c, 8d) se composent d'un premier déplace­ment non tangentiel et d'un basculement angulaire.3. Electric switch according to claim 1, characterized in that the displacements of the pseudo-fixed contact support ( 8b , 8c , 8d ) consist of a first non-tangential displacement and an angular tilting. 4. Interrupteur électrique selon l'une des revendica­tions 1 à 3,
caractérisé en ce que le mouvement J de l'écran isolant (45) effectué lors d'une ouverture automatique de l'interrupteur (5a) et le mouvement G du support (42) de contact pseudo-­fixe (8a) effectué lors d'une ouverture télécommandée, sont de sens inverses.4. Electric switch according to one of claims 1 to 3,
characterized in that the movement J of the insulating screen (45) carried out during an automatic opening of the switch (5 a ) and the movement G of the support (42) of pseudo-fixed contact (8 a ) carried out of a remote-controlled opening, are in opposite directions. 5. Interrupteur électrique selon l'une des revendica­tions 1 à 3,
caractérisé en ce que le mouvement de l'écran isolant (101) et celui du support de contact pseudo-fixe (102) se font dans de mêmes sens G, que l'ouverture de l'interrupteur (5d) soit automatique ou télécommandée.5. Electric switch according to one of claims 1 to 3,
characterized in that the movement of the insulating screen (101) and that of the pseudo-fixed contact support (102) takes place in the same directions G, whether the opening of the switch (5 d ) is automatic or remote-controlled . 6. Interrupteur électrique selon l'une des revendica­tions 1, 3, 4 ou 5,
caractérisé en ce que le support de contact pseudo-fixe (102, 61, 81) effectue son déplacement composite grâce à une coopération relative de rainures (70, 106, 66, 86) et de tiges, doigts ou goupilles de guidage (103, 62, 82) perpen­diculaires au plan du mouvement, ces rainures ou goupilles étant indifféremment portées par le boîtier (2) ou ledit support de contact.6. Electric switch according to one of claims 1, 3, 4 or 5,
characterized in that the pseudo-fixed contact support (102, 61, 81) performs its composite displacement thanks to a relative cooperation of grooves (70, 106, 66, 86) and of rods, fingers or guide pins (103, 62, 82) perpendicular to the plane of movement, these grooves or pins being indifferently carried by the housing (2) or said contact support. 7. Interrupteur électrique selon la revendication 6, caractérisé en ce que les rainures (86, 106) sont rectili­gnes, une surface (94, 108) du support de contact pseudo-­fixe rencontrant lors du premier déplacement une butée fixe (93, 111) du boîtier qui amorce le mouvement initial de basculement.7. Electric switch according to claim 6, characterized in that the grooves (86, 106) are rectilinear, a surface (94, 108) of the pseudo-fixed contact support meeting during the first movement a fixed stop (93, 111) of the case which initiates the initial tilting movement. 8. Interrupteur électrique selon la revendication 6, caractérisé en ce que les rainures (66) comportent une première portion rectiligne (67), et une seconde portion (68) ayant une direction différente.8. Electric switch according to claim 6, characterized in that the grooves (66) comprise a first rectilinear portion (67), and a second portion (68) having a different direction. 9. Interrupteur électrique selon la revendication 6, caractérisé en ce que les rainures (70) sont rectilignes, et font un certain angle δ avec la direction initiale de dépla­cement Δ communiquée par une bielle de commande (72) à une articulation (71) du support de contact pseudo-fixe (61).9. Electric switch according to claim 6, characterized in that the grooves (70) are rectilinear, and make a certain angle δ with the initial direction of movement Δ communicated by a control rod (72) to a joint (71) of the pseudo-fixed contact support (61).
EP87400584A 1986-04-04 1987-03-17 Electrical switch for a protective device such as a circuit breaker Expired - Lifetime EP0244276B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8604840 1986-04-04
FR8604840 1986-04-04

Publications (2)

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EP0244276A1 true EP0244276A1 (en) 1987-11-04
EP0244276B1 EP0244276B1 (en) 1991-06-05

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EP87400584A Expired - Lifetime EP0244276B1 (en) 1986-04-04 1987-03-17 Electrical switch for a protective device such as a circuit breaker

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US (1) US4751483A (en)
EP (1) EP0244276B1 (en)
JP (1) JPS62241232A (en)
KR (1) KR900002615B1 (en)
AU (1) AU606858B2 (en)
BR (1) BR8701560A (en)
CA (1) CA1263469A (en)
DE (1) DE3770516D1 (en)
ES (1) ES2022388B3 (en)
ZA (1) ZA872450B (en)

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EP0345411A2 (en) * 1988-06-09 1989-12-13 Electric Power Research Institute, Inc Remotely controllable circuit breaker
EP0350828A2 (en) * 1988-07-14 1990-01-17 Asea Brown Boveri Aktiengesellschaft Electrical installation apparatus with a contact-separating barrier
DE4234065C1 (en) * 1992-10-09 1993-12-02 Eti Elektroelement Dd Switchgear

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AU604642B2 (en) * 1985-08-23 1991-01-03 Westinghouse Electric Corporation Load control apparatus
KR101771465B1 (en) * 2011-07-25 2017-09-06 엘에스산전 주식회사 Gas insulated switchgear

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DE3123105A1 (en) * 1981-06-11 1982-12-30 Hans 8100 Garmisch-Partenkirchen Langmatz Load interrupter switch
EP0118333A1 (en) * 1983-02-04 1984-09-12 Telemecanique Switch device with insulating barrier introduced between the contacts when they open and with arc cutting means between the barrier and an insulating wall
EP0172488A2 (en) * 1984-08-14 1986-02-26 CGE- COMPAGNIA GENERALE ELETTROMECCANICA S.p.A. Contact arrangement for a current limiting circuit breaker

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FR2563939B1 (en) * 1984-05-03 1988-03-18 Telemecanique Electrique SWITCHING DEVICE WITH ARC SHUTDOWN SCREEN
US4598263A (en) * 1984-11-13 1986-07-01 Westinghouse Electric Corp. Magnetically operated circuit breaker
FR2573914B1 (en) * 1984-11-26 1987-02-06 Telemecanique Electrique ELECTRICAL SWITCH WITH SCREEN
FR2575589B1 (en) * 1984-12-28 1987-02-06 Telemecanique Electrique ELECTRICAL SWITCH WITH SCREEN
US4660009A (en) * 1985-07-29 1987-04-21 Westinghouse Electric Corp. Modular integral circuit interrupter

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DE3123105A1 (en) * 1981-06-11 1982-12-30 Hans 8100 Garmisch-Partenkirchen Langmatz Load interrupter switch
EP0118333A1 (en) * 1983-02-04 1984-09-12 Telemecanique Switch device with insulating barrier introduced between the contacts when they open and with arc cutting means between the barrier and an insulating wall
EP0172488A2 (en) * 1984-08-14 1986-02-26 CGE- COMPAGNIA GENERALE ELETTROMECCANICA S.p.A. Contact arrangement for a current limiting circuit breaker

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0345411A2 (en) * 1988-06-09 1989-12-13 Electric Power Research Institute, Inc Remotely controllable circuit breaker
EP0345411A3 (en) * 1988-06-09 1990-08-01 Electric Power Research Institute, Inc Remotely controllable circuit breaker
EP0350828A2 (en) * 1988-07-14 1990-01-17 Asea Brown Boveri Aktiengesellschaft Electrical installation apparatus with a contact-separating barrier
EP0350828A3 (en) * 1988-07-14 1991-01-02 Asea Brown Boveri Aktiengesellschaft Electrical installation apparatus with a contact-separating barrier
DE4234065C1 (en) * 1992-10-09 1993-12-02 Eti Elektroelement Dd Switchgear
EP0592007A1 (en) * 1992-10-09 1994-04-13 Eti Elektroelement D.D. Switching device

Also Published As

Publication number Publication date
CA1263469A (en) 1989-11-28
ZA872450B (en) 1987-11-25
KR900002615B1 (en) 1990-04-20
JPS62241232A (en) 1987-10-21
AU606858B2 (en) 1991-02-21
KR870010583A (en) 1987-11-30
BR8701560A (en) 1988-01-19
EP0244276B1 (en) 1991-06-05
US4751483A (en) 1988-06-14
DE3770516D1 (en) 1991-07-11
ES2022388B3 (en) 1991-12-01
AU7063787A (en) 1987-10-08

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