EP0926693B1 - Selective trip device for circuit breaker - Google Patents

Selective trip device for circuit breaker Download PDF

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Publication number
EP0926693B1
EP0926693B1 EP98410144A EP98410144A EP0926693B1 EP 0926693 B1 EP0926693 B1 EP 0926693B1 EP 98410144 A EP98410144 A EP 98410144A EP 98410144 A EP98410144 A EP 98410144A EP 0926693 B1 EP0926693 B1 EP 0926693B1
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EP
European Patent Office
Prior art keywords
threshold
blade
tripping
lever
support element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98410144A
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German (de)
French (fr)
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EP0926693A1 (en
Inventor
Xavier Herreros
Michel Lazareth
Alain Menier
Jean-Claude Ramirez
Philippe Schuster
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/44—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay
    • H01H71/446—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay making use of an inertia mass
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1081—Modifications for selective or back-up protection; Correlation between feeder and branch circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/34—Electromagnetic mechanisms having two or more armatures controlled by a common winding

Definitions

  • the invention relates to a selective tripping device associated with a control mechanism of an electric circuit breaker, according to the preamble of claim 1.
  • the selectivity of protections in electrical networks can be total or partial to guarantee users the best availability of energy.
  • total selectivity the occurrence of a fault current from the overload to the free short circuit causes the nearest upstream circuit breaker to open, while the main circuit breaker remains closed.
  • partial selectivity the above condition is not satisfied up to the maximum short-circuit current, but up to a lower value, called the selectivity limit.
  • Each of the documents FR-A-796774 and DE 1041585 discloses a circuit breaker having an electromagnetic actuator equipped with two armatures movable independently of one another.
  • One of the armatures is coupled to a delay device to cause the delayed trip in the presence of a long-term overload current.
  • the other armature causes an instantaneous trip in the presence of a short circuit current.
  • the two movable armatures are mounted on a common pivot.
  • FR2.353.980 discloses a selective trigger equipped with an electromagnetic actuator causing delayed tripping of the circuit breaker mechanism when two successive current waves of intensity higher than a predetermined threshold occur. Another rapid tripping can occur in case of a short-circuit to allow instantaneous tripping of the circuit-breaker when the current exceeds the second threshold.
  • Such a tripping device is conventionally used in large-sized industrial circuit breakers.
  • an optical fiber placed in the vicinity of the contacts allows in the event of repulsion, an instantaneous detection of the arc to cause the immediate tripping of the circuit breaker in the presence of the fault current.
  • the object of the invention is to provide a selective tripping device with high performance electromagnetic actuator.
  • the triggering device according to the invention is characterized by the characterizing part of claim 1.
  • the weight of the retarding system is carried by a support lever mounted pivotally limited on an axis, and comprising a hooking stop for stopping at the first half-wave of the current, the control lever in an intermediate position of the first pallet, the appearance of the next half wave causing the release of the attachment stop for the continued movement of the first pallet to the attracted position causing the delayed triggering by the engagement of the actuating pusher against the trigger lever of the mechanism.
  • the active end of the striker member of the second tripping subassembly comprises a projecting portion disposed opposite the triggering lever, and a recessed portion facing the movable contact arm, the detection of the second repulsion threshold by the attraction of the second pallet neutralizing the selectivity, with an instantaneous triggering of the mechanism.
  • the detection of the repulsion threshold by the attraction of the second pallet neutralizes the selectivity because the triggering becomes instantaneous.
  • the selectivity is partial because it is only operational between the first magnetic threshold and the second repulsion threshold.
  • the striker member is devoid of the protruding part by acting exclusively on the contact arm during the appearance of the first half-wave, the triggering of the intervening mechanism by means of the actuating pusher during the appearance of the second half-wave.
  • the selectivity is in this case total.
  • a circuit breaker 10 housed in a housing 11 of molded insulating material comprises a fixed contact 12. a movable contact 14 carried by a pivoting contact arm 16, a control mechanism 18 associated with a controller 20 manual actuation and automatic fault triggering means, and an extinction chamber 22 with 24 deionization plates for extinguishing the arc drawn between the contacts 12, 14 during their separation.
  • the control mechanism 18 is for example of the type described in the document EP-A295 158, and comprises a release lever 26 cooperating with a detent lever 28 connected to the handle 20 by a transmission rod 30.
  • the contact arm 16 is carried by a movable plate 32 rotatable between a closed position and an open position of the contacts 12, 14.
  • the tripping means of the circuit breaker 10 comprise a selective tripping device, designated by the general reference 34, and constituted by an electromagnetic actuator 36, provided with a fixed magnetic circuit 38, and two movable pallets 42.
  • the excitation of the actuator 36 results from the passage of the current in a conductor 44 of the main circuit causing a magnetic field in the air gap 45 of the magnetic circuit 38 located opposite two separate pallets 42.
  • the conductor 44 carries the fixed contact 12 at one end, and is connected to a connection pad 43 at its opposite end.
  • the first upper pallet 40 of the actuator 36 is part of a first delayed release subassembly 46, comprising an actuating pusher 48 secured to a first support element 50 of the pallet 40.
  • support member 50 is pivotally mounted on a hinge axis 52, and a first return spring 54 is associated with a control link 56 for biasing the first pallet 40 to a rest position when the pulling force exerted by the magnetic circuit 38 is less than the restoring force of the spring 54.
  • a control lever 58 of the first support member 50 situated opposite the pallet 40 cooperates with a retarder system 60 with a weight 62, which is carried by a support lever 64 pivotally mounted limited on an axis 66.
  • the support lever 64 is equipped with an attachment stop 68 intended to come into engagement with the control lever 58, and a double spring 70 having two strands 70a, 70b of different lengths.
  • the delaying system 60 is arranged between the quenching chamber 22 and the conductor 44, which bears against a small lateral face of the casing 11 (FIG. 1).
  • the second lower pallet 42 of the actuator 36 is part of a second instantaneous trigger subassembly 76, provided with a striker member 78 fixed to a second support element 80 of the pallet 42.
  • second support member 80 is hinged on an axis 82, and is associated with a second return spring 84 biasing the second pallet 42 to the discarded position during normal operation of the circuit breaker 10.
  • the active end of the striker member 78 of the second trigger subassembly 76 is subdivided transversely into two portions 72, 74 (FIG. 2) spaced from one another by a longitudinal offset extending in the direction moving the striker member 78 following the attraction of the second pallet 42.
  • the protruding portion 72 is disposed opposite a branch of the trigger lever 26 of the mechanism 18, while the other part 74 recessed is located in front of the inner edge of the contact arm 16.
  • the actuating pusher 48 and the striker member 78 are arranged side by side, and move in the same direction, while the pivoting of the support elements 50, 80 is carried out in the opposite direction when the attraction of their pallets 40, 42 respectively.
  • FIGS. 5 to 11 The operation of the selective tripping device 34 according to the invention is illustrated in FIGS. 5 to 11, in which, for the sake of clarity, the actuating power 48 has been deliberately shifted from the plane of the housing of the striker member 78.
  • the electromagnetic attraction forces in the inlet 45 are lower than the restoring forces of the two threshold springs 54, 84 , which hold the two pallets 40, 42 in the spaced apart position of the pole faces of the magnetic circuit 38.
  • the actuator 36 is in an inactive state, and the double spring 70 biases the support lever 64 of the retarder system 60 in a position of equilibrium .
  • the appearance of a circuit current generates attraction forces in the gap 45 of the actuator 36 which depend on the intensity of the short-circuit current.
  • the setting of the springs 54, 84 is calculated so that the actuator 36 of the selective trip device 34 remains inactive when the value of the peak current is less than 7.5 ln.
  • the first spring of the threshold 54 of the first delayed tripping subassembly 46 is set to 7.5 In corresponding to the magnetic tripping threshold.
  • the second threshold spring 84 of the second instantaneous trigger subassembly 76 is set to 17In corresponding to the repulsion threshold of the contacts 12, 14 of the apparatus.
  • the repulsion threshold is of the order of 3000A.
  • FIG. 5 shows the normal operation of the circuit breaker 10 where the two vanes 40, 42 are not attracted against the magnetic circuit 38 of the actuator 36, and are held in the spaced position.
  • the actuating pusher 48 and the striker member 78 remain stationary in the rest position. Continuity of service is provided, with no trigger mechanism 18, and maintaining the movable contact 14 in the closed position.
  • This current page corresponds to the active selectivity zone whose operating phases are represented in FIGS. 6 to 8.
  • the actuating pusher 48 does not come into contact with the release lever 26, which remains in the armed position. This attraction of the first pallet 40 occurs during the rising edge of the first sine half wave.
  • the electromagnetic force in the air gap 45 decreases, and the first threshold spring 54 causes the pallet 40 to return to the remote initial position (FIG. 7).
  • the support lever 64 pivots slightly in the direction of clockwise, and causes a load shedding of the hooking pressure of the control lever 58 in the stop 68.
  • the pallet 40 remains in the initial position without triggering the mechanism 18.
  • the electromagnetic force in the gap 45 increases, and the first pallet 40 is again attracted in the direction of arrow F1 ( Figure 8).
  • the first support member 50 pivots about the axis 52, and the control lever 58 released from the engagement stopper 68, drives the support lever 64 in rotation about the axis 66, allowing the continuation of the movement of attraction of the pallet 40 to the attracted position.
  • the actuating pusher 48 acts on the release lever 26 to unlock the mechanism 18 causing the pivoting of the contact arms 16 and the opening of the movable contact 14.
  • the delaying system 60 then returns to the initial position of FIG. the action of the potential energy stored by the short run 70a of the double spring 70.
  • the striker member 78 acts on the release lever 26 to unlock the mechanism 18, and simultaneously hits the contact arm 16, which is rapidly driven to the open position ( Figure 10).
  • the movable contact 14 is completely open, and the pallets 40, 42 return to their initial position, as is the support lever 64 of the flyweight 62 (FIG. 11).
  • the trigger mechanism 18 can thus intervene by one of the two trigger subassemblies 46, 76 which are independent of one another, one being delayed by the delay system 60 when the current exceeds the magnetic threshold and the other being instantaneous when the current exceeds the repulsion threshold.
  • the detection of the repulsion threshold by the attraction of the second pallet 42 thus neutralizes the selectivity, since the triggering becomes instantaneous.
  • the selectivity is only operational between the magnetic threshold and the repulsion threshold. Such operation of the triggering device 34 makes it possible to obtain a partial selectivity.
  • the projecting portion 72 of the striker member 78 of the second trigger subassembly 76 is eliminated, so as to constitute a straight edge in alignment with the other part. 74.
  • the striker member 78 no longer acts on the trigger lever 26, but only on the contact arm 16 as a striker. If the short-circuit current persists after the first half-wave, the actuating pusher 48 will trigger the mechanism 18 as in the case of the partial selectivity previously described.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Circuit Breakers (AREA)
  • Keying Circuit Devices (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Cookers (AREA)

Abstract

The first electromagnetic activated section is coupled to a drive arm delaying switching through a swinging arm and requiring higher contact repulsion, whilst the second electromagnetic activated section is carried on a second support with swinging arm directly switching.

Description

L'invention est relative à un dispositif de déclenchement sélectif associé à un mécanisme de commande d'un disjoncteur électrique, selon le préambule de la revendication 1.The invention relates to a selective tripping device associated with a control mechanism of an electric circuit breaker, according to the preamble of claim 1.

La sélectivité des protections dans les réseaux électriques peut être totale ou partielle pour garantir aux utilisateurs la meilleure disponibilité de l'énergie. Dans le cas de la sélectivité totale, l'apparition d'un courant de défaut depuis la surcharge jusqu'au court-circuit franc, provoque l'ouverture du disjoncteur amont la plus proche, tandis que le disjoncteur de tête reste fermé. Dans le cas de la sélectivité partielle, la condition ci-dessus n'est pas respectée jusqu'au courant du court-circuit maximum, mais jusqu'à une valeur inférieure, appelée limite de sélectivité.The selectivity of protections in electrical networks can be total or partial to guarantee users the best availability of energy. In the case of total selectivity, the occurrence of a fault current from the overload to the free short circuit causes the nearest upstream circuit breaker to open, while the main circuit breaker remains closed. In the case of partial selectivity, the above condition is not satisfied up to the maximum short-circuit current, but up to a lower value, called the selectivity limit.

Chacun des documents FR-A-796774 et DE 1041585 décrit un disjoncteur ayant un actionneur électromagnétique équipé de deux armatures mobiles indépendamment l'une de l'autre. L'une des armatures est accouplée à un dispositif retardateur pour provoquer le déclenchement retardé en présence d'un courant de surcharge de longue durée. L'autre armature provoque un déclenchement instantané en présence d'un courant de court-circuit. Les deux armatures mobiles sont montés sur un pivot commun.Each of the documents FR-A-796774 and DE 1041585 discloses a circuit breaker having an electromagnetic actuator equipped with two armatures movable independently of one another. One of the armatures is coupled to a delay device to cause the delayed trip in the presence of a long-term overload current. The other armature causes an instantaneous trip in the presence of a short circuit current. The two movable armatures are mounted on a common pivot.

Le document FR2.353.980 fait connaître un déclencheur sélectif équipé d'un actionneur électromagnétique provoquant le déclenchement retardé du mécanisme du disjoncteur lors de l'apparition de deux ondes de courant successives d'intensité supérieure à un seuil prédéterminé. Un autre déclenchement rapide peut intervenir en cas de court-circuit franc pour autoriser un déclenchement instantané du disjoncteur lorsque le courant dépasse le deuxième seuil. Un tel dispositif de déclenchement est utilisé de manière classique dans les disjoncteurs industriels de gros calibres.FR2.353.980 discloses a selective trigger equipped with an electromagnetic actuator causing delayed tripping of the circuit breaker mechanism when two successive current waves of intensity higher than a predetermined threshold occur. Another rapid tripping can occur in case of a short-circuit to allow instantaneous tripping of the circuit-breaker when the current exceeds the second threshold. Such a tripping device is conventionally used in large-sized industrial circuit breakers.

Selon le document FR 2.621.748 une fibre optique placée au voisinage des contacts permet en cas de répulsion, une détection instantanée de l'arc pour provoquer le déclenchement immédiat du disjoncteur en présence du courant de défaut.According to the document FR 2.621.748 an optical fiber placed in the vicinity of the contacts allows in the event of repulsion, an instantaneous detection of the arc to cause the immediate tripping of the circuit breaker in the presence of the fault current.

Selon le document FR 2.661.776 on utilise la pression engendrée par le développement d'un arc pour provoquer un déclenchement instantané par l'intermédiaire d'un système à piston.According to the document FR 2,661,776 the pressure generated by the development of an arc is used to cause an instantaneous triggering by means of a piston system.

L'objet de l'invention consiste à réaliser un dispositif de déclenchement sélectif à actionneur électromagnétique performant.The object of the invention is to provide a selective tripping device with high performance electromagnetic actuator.

Le dispositif de déclenchement selon l'invention est caractérisé par la partie caractérisante de la revendication 1.The triggering device according to the invention is characterized by the characterizing part of claim 1.

Selon une caractéristique de l'invention, la masselotte du système retardateur est portée par un levier support monté à pivotement limité sur un axe, et comprenant une butée d'accrochage destinée à arrêter à la première demi-onde du courant, le levier de commande dans une position intermédiaire de la première palette, l'apparition de la demi-onde suivante provoquant la libération de la butée d'accrochage pour le déplacement poursuivi de la première palette vers la position attirée entraînant le déclenchement retardé par la venue en engagement du poussoir d'actionnement contre le levier de déclenchement du mécanisme.According to one characteristic of the invention, the weight of the retarding system is carried by a support lever mounted pivotally limited on an axis, and comprising a hooking stop for stopping at the first half-wave of the current, the control lever in an intermediate position of the first pallet, the appearance of the next half wave causing the release of the attachment stop for the continued movement of the first pallet to the attracted position causing the delayed triggering by the engagement of the actuating pusher against the trigger lever of the mechanism.

Selon un mode de réalisation préférentiel, l'extrémité active de l'organe percuteur du deuxième sous-ensemble de déclenchement comporte une partie saillante disposée au regard du levier de déclenchement, et une partie en retrait située en face du bras de contact mobile, la détection du deuxième seuil de répulsion par l'attraction de la deuxième palette neutralisant la sélectivité, avec un déclenchement instantané du mécanisme.According to a preferred embodiment, the active end of the striker member of the second tripping subassembly comprises a projecting portion disposed opposite the triggering lever, and a recessed portion facing the movable contact arm, the detection of the second repulsion threshold by the attraction of the second pallet neutralizing the selectivity, with an instantaneous triggering of the mechanism.

La détection du seuil de répulsion par l'attraction de la deuxième palette neutralise la sélectivité, car le déclenchement devient instantané. La sélectivité est partielle, car elle est uniquement opérationnelle entre le premier seuil magnétique, et le deuxième seuil de répulsion.The detection of the repulsion threshold by the attraction of the second pallet neutralizes the selectivity because the triggering becomes instantaneous. The selectivity is partial because it is only operational between the first magnetic threshold and the second repulsion threshold.

Selon une variante, l'organe percuteur est dépourvu de la partie saillante en agissant exclusivement sur le bras de contact lors de l'apparition de la première demi-onde, le déclenchement du mécanisme intervenant par l'intermédiaire du poussoir d'actionnement lors de l'apparition de la deuxième demi-onde. La sélectivité est dans ce cas totale.According to one variant, the striker member is devoid of the protruding part by acting exclusively on the contact arm during the appearance of the first half-wave, the triggering of the intervening mechanism by means of the actuating pusher during the appearance of the second half-wave. The selectivity is in this case total.

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode de réalisation de l'invention, donné à titre d'exemple non limitatif et représenté aux dessins annexés dans lesquels :

  • la figure 1 est une vue en élévation du disjoncteur équipé du dispositif de déclenchement sélectif selon l'invention ;
  • la figure 2 montre une vue en perspective à échelle agrandie du dispositif de déclenchement sélectif selon la figure 1 ;
  • la figure 3 est une vue en élévation du premier sous-ensemble de déclenchement retardé de l'actionneur de la figure 2 ;
  • la figure 4 représente une vue en élévation du deuxième sous-ensemble de déclenchement instantané de l'actionneur de la figure 2 ;
  • la figure 5 est une vue schématique du dispositif de déclenchement lors du fonctionnement normal du disjoncteur ;
  • les figures 6 à 8 sont des vues identiques de la figure 5, lorsque l'amplitude du courant crête est comprise entre le premier seuil magnétique, et le deuxième seuil de répulsion ;
  • les figures 9 à 11 sont des vues identiques de la figure 5, lorsque l'amplitude du courant crête est supérieure au deuxième seuil de répulsion
  • la figure 12 est une vue similaire de la figure 1, d'une variante de réalisation, la chambre d'extinction d'arc n'étant pas représentée ;
  • la figure 13 montre une vue en perspective du dispositif de déclenchement de la figure 12 ;
  • la figure 14 est une vue en élévation du dispositif de déclenchement de la figure 12.
Other advantages and features will emerge more clearly from the following description of an embodiment of the invention, given by way of non-limiting example and represented in the accompanying drawings, in which:
  • Figure 1 is an elevational view of the circuit breaker equipped with the selective tripping device according to the invention;
  • Figure 2 shows an enlarged perspective view of the selective trip device according to Figure 1;
  • Figure 3 is an elevational view of the first delayed trigger subassembly of the actuator of Figure 2;
  • FIG. 4 represents an elevational view of the second instantaneous trigger subassembly of the actuator of FIG. 2;
  • Figure 5 is a schematic view of the tripping device during normal operation of the circuit breaker;
  • FIGS. 6 to 8 are identical views of FIG. 5, when the amplitude of the peak current lies between the first magnetic threshold and the second repulsion threshold;
  • FIGS. 9 to 11 are identical views of FIG. 5, when the amplitude of the peak current is greater than the second repulsion threshold.
  • Figure 12 is a similar view of Figure 1, an alternative embodiment, the arc extinguishing chamber not being shown;
  • Figure 13 shows a perspective view of the trigger device of Figure 12;
  • Figure 14 is an elevational view of the trigger device of Figure 12.

En référence aux figures 1 et 2, un disjoncteur 10 logé dans un boîtier 11 en matériau isolant moulé, comporte un contact fixe 12. un contact mobile 14 porté par un bras de contact 16 pivotant, un mécanisme 18 de commande associé à une manette 20 d'actionnement manuel et à des moyens de déclenchement automatique sur défaut, et une chambre d'extinction 22 à tôles 24 de désionisation pour éteindre l'arc tiré entre les contacts 12, 14 lors de leur séparation.
Le mécanisme 18 de commande est par exemple du type décrit dans le document EP-A295 158, et comprend un levier de déclenchement 26 coopérant avec un levier d'encliquetage 28 relié à la manette 20 par une biellette de transmission 30. Le bras de contact 16 est porté par une platine 32 mobile à rotation entre une position de fermeture et une position d'ouverture des contacts 12, 14.Referring to Figures 1 and 2, a circuit breaker 10 housed in a housing 11 of molded insulating material, comprises a fixed contact 12. a movable contact 14 carried by a pivoting contact arm 16, a control mechanism 18 associated with a controller 20 manual actuation and automatic fault triggering means, and an extinction chamber 22 with 24 deionization plates for extinguishing the arc drawn between the contacts 12, 14 during their separation.
The control mechanism 18 is for example of the type described in the document EP-A295 158, and comprises a release lever 26 cooperating with a detent lever 28 connected to the handle 20 by a transmission rod 30. The contact arm 16 is carried by a movable plate 32 rotatable between a closed position and an open position of the contacts 12, 14.

Les moyens de déclenchement du disjoncteur 10 comportent un dispositif de déclenchement sélectif, désigné par le repère général 34, et constitué par un actionneur 36 électromagnétique, doté d'un circuit magnétique 38 fixe, et de deux palettes 40 42 mobiles. L'excitation de l'actionneur 36 résulte du passage du courant dans un conducteur 44 du circuit principal provoquant un champ magnétique dans l'entrefer 45 du circuit magnétique 38 situé en regard des deux palettes 40 42 distinctes. Le conducteur 44 porte le contact fixe 12 à l'une des extrémités, et est relié à une plage de raccordement 43 par son extrémité opposée.The tripping means of the circuit breaker 10 comprise a selective tripping device, designated by the general reference 34, and constituted by an electromagnetic actuator 36, provided with a fixed magnetic circuit 38, and two movable pallets 42. The excitation of the actuator 36 results from the passage of the current in a conductor 44 of the main circuit causing a magnetic field in the air gap 45 of the magnetic circuit 38 located opposite two separate pallets 42. The conductor 44 carries the fixed contact 12 at one end, and is connected to a connection pad 43 at its opposite end.

Sur la figure 3, la première palette 40 supérieure de l'actionneur 36 fait partie d'un premier sous-ensemble de déclenchement 46 retardé, comprenant un poussoir d'actionnement 48 solidarisé à un premier élément de support 50 de la palette 40. L'élément de support 50 est monté à pivotement sur un axe d'articulation 52, et un premier ressort de rappel 54 est associé à une biellette de réglage 56 pour solliciter la première palette 40 vers une position écartée de repos lorsque la force d'attraction exercée par le circuit magnétique 38 est inférieure à la force de rappel du ressort 54. Un levier de commande 58 du premier élément de support 50 situé à l'opposé de la palette 40, coopère avec un système retardateur 60 à masselotte 62, laquelle est portée par un levier support 64 monté à pivotement limité sur un axe 66.
Le levier support 64 est équipé d'une butée d'accrochage 68 destinée à venir en engagement avec le levier de commande 58, et d'un ressort double 70 ayant deux brins 70a, 70b de longueurs différentes. Le système retardateur 60 est agencé entre la chambre d'extinction 22, et le conducteur 44, lequel est en appui contre une petite face latérale du boîtier 11 (figure 1).In FIG. 3, the first upper pallet 40 of the actuator 36 is part of a first delayed release subassembly 46, comprising an actuating pusher 48 secured to a first support element 50 of the pallet 40. support member 50 is pivotally mounted on a hinge axis 52, and a first return spring 54 is associated with a control link 56 for biasing the first pallet 40 to a rest position when the pulling force exerted by the magnetic circuit 38 is less than the restoring force of the spring 54. A control lever 58 of the first support member 50 situated opposite the pallet 40 cooperates with a retarder system 60 with a weight 62, which is carried by a support lever 64 pivotally mounted limited on an axis 66.
The support lever 64 is equipped with an attachment stop 68 intended to come into engagement with the control lever 58, and a double spring 70 having two strands 70a, 70b of different lengths. The delaying system 60 is arranged between the quenching chamber 22 and the conductor 44, which bears against a small lateral face of the casing 11 (FIG. 1).

Sur la figure 4, la deuxième palette 42 inférieure de l'actionneur 36 fait partie d'un deuxième sous-ensemble de déclenchement 76 instantané, doté d'un organe percuteur 78 fixé à un deuxième élément de support 80 de la palette 42. Le deuxième élément de support 80 est articulé sur un axe 82, et est associé à un deuxième ressort de rappel 84 sollicitant la deuxième palette 42 vers la position écartée lors du fonctionnement normal du disjoncteur 10.In FIG. 4, the second lower pallet 42 of the actuator 36 is part of a second instantaneous trigger subassembly 76, provided with a striker member 78 fixed to a second support element 80 of the pallet 42. second support member 80 is hinged on an axis 82, and is associated with a second return spring 84 biasing the second pallet 42 to the discarded position during normal operation of the circuit breaker 10.

L'extrémité active de l'organe percuteur 78 du deuxième sous-ensemble de déclenchement 76, est subdivisé transversalement en deux parties 72, 74 (figure 2) espacées l'une de l'autre par un décalage longitudinal s'étendant dans la direction de déplacement de l'organe percuteur 78 suite à l'attraction de la deuxième palette 42. La partie saillante 72 est disposée en regard d'une branche du levier de déclenchement 26 du mécanisme 18, tandis que l'autre partie 74 en retrait est située en face du chant interne du bras de contact 16.The active end of the striker member 78 of the second trigger subassembly 76 is subdivided transversely into two portions 72, 74 (FIG. 2) spaced from one another by a longitudinal offset extending in the direction moving the striker member 78 following the attraction of the second pallet 42. The protruding portion 72 is disposed opposite a branch of the trigger lever 26 of the mechanism 18, while the other part 74 recessed is located in front of the inner edge of the contact arm 16.

Le poussoir d'actionnement 48 et l'organe percuteur 78 sont disposés côte à côte, et se déplacent dans le même sens, alors que le pivotement des éléments de support 50, 80 s'effectue en sens inverse lors de l'attraction de leurs palettes 40, 42 respectives.The actuating pusher 48 and the striker member 78 are arranged side by side, and move in the same direction, while the pivoting of the support elements 50, 80 is carried out in the opposite direction when the attraction of their pallets 40, 42 respectively.

Le fonctionnement du dispositif de déclenchement sélectif 34 selon l'invention est illustré sur les figures 5 à 11, dans lesquels pour des raisons de clarté, le pouvoir d'actionnement 48 a été décalé volontairement du plan du logement de l'organe percuteur 78.The operation of the selective tripping device 34 according to the invention is illustrated in FIGS. 5 to 11, in which, for the sake of clarity, the actuating power 48 has been deliberately shifted from the plane of the housing of the striker member 78.

En l'absence de courant de défaut dans le circuit principal du disjoncteur 10, par exemple lors du passage du courant nominal, les forces d'attraction électromagnétiques dans l'entreter 45 sont inférieures aux forces de rappel des deux ressorts de seuil 54, 84, qui maintiennent les deux palettes 40, 42 en position écartée des faces polaires du circuit magnétique 38. L'actionneur 36 est dans un état inactif, et le ressort double 70 sollicite le levier support 64 du système retardateur 60 dans une position d'équilibre.In the absence of fault current in the main circuit of the circuit breaker 10, for example when the nominal current passes, the electromagnetic attraction forces in the inlet 45 are lower than the restoring forces of the two threshold springs 54, 84 , which hold the two pallets 40, 42 in the spaced apart position of the pole faces of the magnetic circuit 38. The actuator 36 is in an inactive state, and the double spring 70 biases the support lever 64 of the retarder system 60 in a position of equilibrium .

L'apparition d'un courant de surcharge par exemple à partir de 1,4 In (In étant le calibre de courant nominal) est détectée par le déclencheur thermique à bilame (non représenté sur les figures), qui agit directement sur le levier de déclenchement 26 pour provoquer le déverrouillage de l'accrochage du mécanisme 18 et l'ouverture des contacts 12, 14.The occurrence of an overload current, for example from 1.4 In (In being the nominal current rating), is detected by the bimetal thermal trip unit (not shown in the figures), which acts directly on the control lever. triggering 26 to cause the unlocking of the hooking mechanism 18 and the opening of the contacts 12, 14.

L'apparition d'un courant de circuit engendre des forces d'attraction dans l'entrefer 45 de l'actionneur 36 qui dépendent de l'intensité du courant de court-circuit. Le tarage des ressorts 54, 84 est calculé pour que l'actionneur 36 du dispositif de déclenchement sélectif 34 reste inactif lorsque la valeur du courant crête est inférieure à 7,5 ln. Le premier ressort du seuil 54 du premier sous-ensemble de déclenchement retardé 46 est réglé à 7,5 In correspondant au seuil magnétique de déclenchement.The appearance of a circuit current generates attraction forces in the gap 45 of the actuator 36 which depend on the intensity of the short-circuit current. The setting of the springs 54, 84 is calculated so that the actuator 36 of the selective trip device 34 remains inactive when the value of the peak current is less than 7.5 ln. The first spring of the threshold 54 of the first delayed tripping subassembly 46 is set to 7.5 In corresponding to the magnetic tripping threshold.

Le deuxième ressort de seuil 84 du deuxième sous-ensemble de déclenchement 76 instantané est réglé à 17 In correspondant au seuil de répulsion des contacts 12, 14 de l'appareil. Pour un disjoncteur de calibre 125A, le seuil de répulsion est de l'ordre de 3000A.The second threshold spring 84 of the second instantaneous trigger subassembly 76 is set to 17In corresponding to the repulsion threshold of the contacts 12, 14 of the apparatus. For a 125A circuit breaker, the repulsion threshold is of the order of 3000A.

Fonctionnement dans le cas où l'amplitude du courant crête est inférieur au seuil magnétique de 7,5 InOperation in the case where the amplitude of the peak current is lower than the magnetic threshold of 7.5 In

La figure 5 montre le fonctionnement normal du disjoncteur 10 où les deux palettes 40, 42 ne sont pas attirées contre le circuit magnétique 38 de l'actionneur 36, et sont maintenues dans la position écartée. Le poussoir d'actionnement 48 et l'organe percuteur 78 restent immobiles dans la position de repos. La continuité du service est assurée, avec absence de déclenchement du mécanisme 18, et maintien du contact mobile 14 en position fermée.FIG. 5 shows the normal operation of the circuit breaker 10 where the two vanes 40, 42 are not attracted against the magnetic circuit 38 of the actuator 36, and are held in the spaced position. The actuating pusher 48 and the striker member 78 remain stationary in the rest position. Continuity of service is provided, with no trigger mechanism 18, and maintaining the movable contact 14 in the closed position.

Fonctionnement dans le cas où l'amplitude du courant crête est comprise entre le seuil magnétique (7,5 In) et le seuil de répulsion (17 In)Operation in the case where the amplitude of the peak current is between the magnetic threshold (7.5 In) and the repulsion threshold (17 In)

Cette page de courant correspond à la zone active de sélectivité dont les phases de fonctionnement sont représentées dans les figures 6 à8.This current page corresponds to the active selectivity zone whose operating phases are represented in FIGS. 6 to 8.

Seule la première palette 40 se déplace dans le sens d'attraction indiqué par la flèche F1, tandis que l'autre palette 42 reste immobile (figure 6). Le premier élément de support 50 pivote autour de l'axe d'articulation 52 dans le sens des aiguilles d'une montre jusqu'à la venue en appui du levier de commande 58 contre la butée d'accrochage 68 du levier support 64 de la masselotte 62. Le mouvement d'attraction de la première palette 40 est stoppé à cet instant, suite à l'inertie de la masselotte 62.Only the first pallet 40 moves in the direction of attraction indicated by the arrow F1, while the other pallet 42 remains stationary (FIG. 6). The first support member 50 pivots around the hinge pin 52 in the clockwise direction until the control lever 58 comes into abutment against the attachment stop 68 of the support lever 64 of the 62. The attraction movement of the first pallet 40 is stopped at this moment, following the inertia of the weight 62.

Le poussoir d'actionnement 48 n'entre pas en contact avec le levier de déclenchement 26, lequel reste en position armée. Cette précourse d'attraction de la première palette 40 intervient pendant le front ascendant de la première demi-onde sinusoïdale.The actuating pusher 48 does not come into contact with the release lever 26, which remains in the armed position. This attraction of the first pallet 40 occurs during the rising edge of the first sine half wave.

Lors du front descendant de la première demi-onde, la force électromagnétique dans l'entrefer 45 diminue, et le premier ressort de seuil 54 provoque le rappel de la palette 40 vers la position initiale écartée (figure 7). Le levier support 64 pivote légèrement dans le sens des aiguilles d'une montre, et entraîne un délestage de la pression d'accrochage du levier de commande 58 dans la butée 68.At the falling edge of the first half-wave, the electromagnetic force in the air gap 45 decreases, and the first threshold spring 54 causes the pallet 40 to return to the remote initial position (FIG. 7). The support lever 64 pivots slightly in the direction of clockwise, and causes a load shedding of the hooking pressure of the control lever 58 in the stop 68.

Si la durée du courant crête n'excède pas une demi-onde, la palette 40 reste en position initiale sans déclencher le mécanisme 18.If the duration of the peak current does not exceed half a wave, the pallet 40 remains in the initial position without triggering the mechanism 18.

Si la durée du courant crête excède une demi-onde, la force électromagnétique dans l'entrefer 45 augmente, et la première palette 40 est à nouveau attirée dans le sens de la flèche F1 (figure 8) . Le premier élément de support 50 pivote autour de l'axe 52, et le levier de commande 58 libéré de la butée d'accrochage 68, entraîne le levier support 64 en rotation autour de l'axe 66, autorisant la poursuite du mouvement d'attraction de la palette 40 vers la position attirée. Le poussoir d'actionnement 48 agit sur le levier de déclenchement 26 pour déverrouiller le mécanisme 18 entraînant le pivotement des bras de contact 16 et l'ouverture du contact mobile 14. Le système retardateur 60 revient ensuite dans la position initiale de la figure 5 sous l'action de l'énergie potentielle emmagasinée par le brin court 70a du ressort double 70.If the duration of the peak current exceeds one half-wave, the electromagnetic force in the gap 45 increases, and the first pallet 40 is again attracted in the direction of arrow F1 (Figure 8). The first support member 50 pivots about the axis 52, and the control lever 58 released from the engagement stopper 68, drives the support lever 64 in rotation about the axis 66, allowing the continuation of the movement of attraction of the pallet 40 to the attracted position. The actuating pusher 48 acts on the release lever 26 to unlock the mechanism 18 causing the pivoting of the contact arms 16 and the opening of the movable contact 14. The delaying system 60 then returns to the initial position of FIG. the action of the potential energy stored by the short run 70a of the double spring 70.

Fonctionnement dans le cas où l'amplitude du courant crête est supérieure au seuil de répulsion 17 In (figures 9 à 11). Operation in the case where the amplitude of the peak current is greater than the repulsion threshold 17 In (Figures 9 to 11) .

Il n'y a plus de sélectivité pour cette valeur de courant de court-circuit. Lors de l'apparition du front ascendant de la première demi-onde de courant, les deux palettes 40, 42 sont attirées par le circuit magnétique de l'actionneur (figure 9). Le mouvement de la première palette 40 est arrêté par la butée d'accrochage 68, mais la deuxième palette 42 effectue la course complète en poursuivant son déplacement jusqu'à la position attirée.There is no more selectivity for this short circuit current value. During the appearance of the rising edge of the first half wave of current, the two vanes 40, 42 are attracted by the magnetic circuit of the actuator (FIG. 9). The movement of the first pallet 40 is stopped by the attachment stop 68, but the second pallet 42 performs the complete race by continuing to move to the attracted position.

L'organe percuteur 78 agit sur le levier de déclenchement 26 pour déverrouiller le mécanisme 18, et percute simultanément le bras de contact 16, lequel est entraîné rapidement vers la position d'ouverture (figure 10). En fin de mouvement, le contact mobile 14 est complètement ouvert, et les palettes 40, 42 reviennent en position initiale, ainsi que le levier de support 64 de la masselotte 62 (figure 11).
Le déclenchement du mécanisme 18 peut ainsi intervenir par l'un des deux sous-ensembles de déclenchement 46 ,76 qui sont indépendants l'un de l'autre, l'un étant retardé par le système retardateur 60 lorsque le courant dépasse le seuil magnétique, et l'autre étant instantané lorsque le courant dépasse le seuil de répulsion. La détection du seuil de répulsion par l'attraction de la deuxième palette 42 neutralise de ce fait la sélectivité, car le déclenchement devient instantané. La sélectivité est uniquement opérationnelle entre le seuil magnétique et le seuil de répulsion. Un tel fonctionnement du dispositif de déclenchement 34 permet d'obtenir une sélectivité partielle.The striker member 78 acts on the release lever 26 to unlock the mechanism 18, and simultaneously hits the contact arm 16, which is rapidly driven to the open position (Figure 10). At the end of the movement, the movable contact 14 is completely open, and the pallets 40, 42 return to their initial position, as is the support lever 64 of the flyweight 62 (FIG. 11).
The trigger mechanism 18 can thus intervene by one of the two trigger subassemblies 46, 76 which are independent of one another, one being delayed by the delay system 60 when the current exceeds the magnetic threshold and the other being instantaneous when the current exceeds the repulsion threshold. The detection of the repulsion threshold by the attraction of the second pallet 42 thus neutralizes the selectivity, since the triggering becomes instantaneous. The selectivity is only operational between the magnetic threshold and the repulsion threshold. Such operation of the triggering device 34 makes it possible to obtain a partial selectivity.

Selon la variante des figures 12 à 14 concernant un fonctionnement à sélectivité totale, la partie saillante 72 de l'organe percuteur 78 du deuxième sous-ensemble de déclenchement 76 est supprimée, de manière à constituer une arête rectiligne en alignement avec l'autre partie 74. A la première demi-onde de courant de court-circuit, l'organe percuteur 78 n'agit plus sur le levier de déclenchement 26, mais uniquement sur le bras de contact 16 en tant que percuteur. Si le courant de court-circuit persiste après la première demi-onde, le poussoir d'actionnement 48 provoquera le déclenchement du mécanisme 18 comme dans le cas de la sélectivité partielle décrite précédemment.According to the variant of FIGS. 12 to 14 relating to operation with total selectivity, the projecting portion 72 of the striker member 78 of the second trigger subassembly 76 is eliminated, so as to constitute a straight edge in alignment with the other part. 74. At the first half-wave of short-circuit current, the striker member 78 no longer acts on the trigger lever 26, but only on the contact arm 16 as a striker. If the short-circuit current persists after the first half-wave, the actuating pusher 48 will trigger the mechanism 18 as in the case of the partial selectivity previously described.

Claims (4)

  1. Selective trip device (34) associated with an operating mechanism (18) of an electrical circuit breaker, and comprising an electromagnetic actuator (36) with a magnetic circuit (38) comprising:
    - a movable first blade (40) designed to cooperate with a delaying system (60) to perform delayed tripping when the current exceeds a first magnetic threshold,
    - the first blade (40) being coupled to an actuating push-rod (48), and being fixedly secured to a first support element (50) pivotally mounted on a first articulation spindle (52),
    - a first return spring (54) being associated with the first blade (40) to define the first magnetic threshold of a first tripping sub-assembly (46),
    - a movable second blade (42) designed to perform instantaneous tripping when the current exceeds a second magnetic threshold higher than the first threshold,
    - the second blade (42) being coupled to a striking member (78) to form instantaneous tripping means of a second tripping sub-assembly (76) of the mechanism (18),
    - a second return spring (84) being associated with the second blade (42) to determine said second threshold,
    - said second threshold corresponding to the repulsion threshold of the contacts (12, 14), so as to obtain either partial selectivity between the first threshold and the second threshold, or total selectivity beyond the second threshold,
    characterized in that:
    - the first support element (50) comprises an operating lever (58),
    - the delaying system (60) comprises a counterweight (62) borne by a support lever (64) mounted with limited pivoting on a third spindle (66), and comprising a latching stop (68) designed to stop the operating lever (58) in an intermediate position of the first blade (40) at the first current half-wave, the occurrence of the next half-wave causing the latching stop (68) to be released to continue the movement of the first blade (40), resulting in delayed tripping by the actuating push-rod (48) coming into engagement against the trip lever (26) of the mechanism (18),
    - the second blade (42) is secured to a second support element (80) articulated on a second spindle (82) and bearing said striking member (78) arranged side by side with the actuating push-rod (48).
  2. Selective trip device according to claim 1, characterized in that pivoting of the first support element (50) takes place in the opposite direction to that of the second support element (80) when attraction of the respective blades (40, 42) takes place.
  3. Selective trip device according to claim 1 or 2, characterized in that the active end of the striking member (78) of the second tripping sub-assembly (76) comprises a salient part (72) arranged facing the trip lever (26), and a withdrawn part (74) situated facing the movable contact arm (16), detection of the second repulsion threshold by attraction of the second blade (42) neutralising selectivity, with instantaneous tripping of the mechanism.
  4. Selective trip device according to claim 1 or 2, characterized in that the striking member (78) does not comprise the salient part (72) acting exclusively on the contact arm (16) when the first half-wave occurs, tripping of the mechanism (12) being performed by means of the actuating push-rod (48) when the second half-wave occurs.
EP98410144A 1997-12-24 1998-12-09 Selective trip device for circuit breaker Expired - Lifetime EP0926693B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9716725 1997-12-24
FR9716725A FR2772981B1 (en) 1997-12-24 1997-12-24 SELECTIVE TRIGGERING DEVICE FOR CIRCUIT BREAKER

Publications (2)

Publication Number Publication Date
EP0926693A1 EP0926693A1 (en) 1999-06-30
EP0926693B1 true EP0926693B1 (en) 2006-03-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP98410144A Expired - Lifetime EP0926693B1 (en) 1997-12-24 1998-12-09 Selective trip device for circuit breaker

Country Status (4)

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EP (1) EP0926693B1 (en)
AT (1) ATE319183T1 (en)
DE (1) DE69833637T2 (en)
FR (1) FR2772981B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9355803B2 (en) 2012-12-03 2016-05-31 Schneider Electric Industries Sas Actuator with thermomagnetic shunt, especially for triggering a circuit breaker

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2980910B1 (en) * 2011-09-30 2013-09-06 Schneider Electric Ind Sas TRIGGERING DEVICE FOR CIRCUIT BREAKER AND CIRCUIT BREAKER COMPRISING SUCH A DEVICE
FR3028349B1 (en) 2014-11-12 2016-12-30 Schneider Electric Ind Sas ELECTROMAGNETIC ACTUATOR AND CIRCUIT BREAKER COMPRISING SUCH ACTUATOR

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR796774A (en) * 1935-10-15 1936-04-15 Stotz Kontakt Gmbh Electromagnetic automatic circuit breaker
DE1041585B (en) * 1955-08-27 1958-10-23 Siemens Ag Electrical switch with magnetic overcurrent release
US3497838A (en) * 1968-04-22 1970-02-24 Airpax Electronics Circuit breaker having inertial delay
CH672036A5 (en) * 1986-12-23 1989-10-13 Sprecher & Schuh Ag
FR2616583B1 (en) * 1987-06-09 1995-01-06 Merlin Gerin CONTROL MECHANISM OF A MINIATURE ELECTRIC CIRCUIT BREAKER
ZA936632B (en) * 1992-09-14 1994-03-30 Circuit Breaker Ind An electro-magnetic device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9355803B2 (en) 2012-12-03 2016-05-31 Schneider Electric Industries Sas Actuator with thermomagnetic shunt, especially for triggering a circuit breaker

Also Published As

Publication number Publication date
ATE319183T1 (en) 2006-03-15
FR2772981B1 (en) 2000-01-21
EP0926693A1 (en) 1999-06-30
DE69833637D1 (en) 2006-04-27
DE69833637T2 (en) 2006-10-12
FR2772981A1 (en) 1999-06-25

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