EP0566462B1 - Automatic circuit breaker - Google Patents

Automatic circuit breaker Download PDF

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Publication number
EP0566462B1
EP0566462B1 EP93400938A EP93400938A EP0566462B1 EP 0566462 B1 EP0566462 B1 EP 0566462B1 EP 93400938 A EP93400938 A EP 93400938A EP 93400938 A EP93400938 A EP 93400938A EP 0566462 B1 EP0566462 B1 EP 0566462B1
Authority
EP
European Patent Office
Prior art keywords
opening
spring
contact
lever
breaker
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
EP93400938A
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German (de)
French (fr)
Other versions
EP0566462A1 (en
Inventor
Jose Maria Elizalde
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.)
ELECTRICAL DISTRIBUTION & CONTROL ESPANA, S.A.
Original Assignee
Electrical Distribution & Control Espana Sa
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Publication of EP0566462A1 publication Critical patent/EP0566462A1/en
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Publication of EP0566462B1 publication Critical patent/EP0566462B1/en
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Classifications

    • 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
    • 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
    • H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
    • 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
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures

Definitions

  • the present invention relates to a circuit breaker automatic which presents a whole series of important advantages and important innovations compared to current circuit breakers used for the same purpose or similar.
  • the invention relates to a circuit breaker mechanism having breaking capacity by current limitation.
  • the automatic circuit breaker object of this invention essentially consists of mechanisms who perform the normal closing and opening of the circuit breaker, opening by thermal tripping, opening by magnetic release and opening by short circuit.
  • the normal operating mechanism of establishment and breaker breaker is only formed of five parts: lever, lever spring, connecting rod, spring mechanism and movable contact.
  • DE-A-36 19 239 shows an automatic circuit breaker according to the preamble of claim 1.
  • circuit breaker according to the present invention is distinguished by the characteristics defined in the section Characterizing of claim 1.
  • This engagement is made up of two pieces of wire metallic in which the generators are parallel, the section of the two parts can be arbitrary, cylindrical, square, rectangular, etc.
  • this column By deforming and changing position, this column exerts pressure on the connecting rod, developing a spring action on it to keep it in pre-establishment position regardless of position mounting the switch.
  • the electromagnetic opening device has the novelty that the fixed contact also performs the functions of a magnetic casing, by closing the magnetic circuit of the magnetic tripping mechanism.
  • the fixed contact also performs the functions of a magnetic casing, by closing the magnetic circuit of the magnetic tripping mechanism.
  • it is dimensioned, by its thickness, and thanks to the housing provided for the coil, so that the windings of this coil are concentrated in the interval between the carcass and the movable core, which makes it possible to obtain a mechanism magnetic trip devoid of a fixed core, thereby providing important which will follow from an exemplary embodiment and with reference to the accompanying drawings in which: Figures 1 and 2 are two diagrams of the circuit breaker, in its establishment and breaking positions respectively.
  • the apparatus comprises a case composed of a carcass 1 and a cover 2 in insulating material, a set of components of the electrical current interruption system, and which are manually operated using an M stick that emerges outside the housing, and a fire extinguishing system short circuits 3 essentially formed by a chamber 4 of blowing of the arc, and of an arc track 5.
  • the electrical current interruption system is a mechanism which is composed of five kinematic chains.
  • the first chain A is formed by the lever M which rotates around an axis 10, which is part of the carcass 1, of a connecting rod 11, one end of which is threaded in a hole 12 made in the lever M and in which it can rotate freely, the other end being free, and a spring 14 for resetting the lever.
  • the second kinematic chain B is formed by movable contact CM, which is a piece of conductive material which revolves around axis 20, which is part of the carcass 1, and a mechanism spring 21 having four support points, the first support point 28 (in the position of the closed switch shown in the figure 1) located on the free end 13 of the connecting rod 11 and on the movable contact CM, a fulcrum 22 on the contact mobile CM, and another fulcrum 27 on the carcass 1.
  • the third kinematic chain C is formed by a magnetic trip mechanism which responds electromagnetically to an excess of current in the circuit in which the circuit breaker is inserted.
  • This chain is formed of a movable core 30 which slides inside a spool pin 31.
  • the apparatus comprises a case composed of a carcass 1 and a cover 2 in insulating material, a set of components of the electrical current interruption system, and which are manually operated using an M stick that emerges outside the housing, and a fire extinguishing system short circuits 3 essentially formed by a chamber 4 of blowing of the arc, and of an arc track 5.
  • the electrical current interruption system is a mechanism which is composed of five kinematic chains.
  • the first chain A is formed by the lever M which rotates around an axis 10, which is part of the carcass 1, of a connecting rod 11, one end of which is threaded in a hole 12 made in the lever M and in which it can rotate freely, the other end being free, and a spring 14 for resetting the lever.
  • the second kinematic chain B is formed by movable contact CM, which is a piece of conductive material which revolves around axis 20, which is part of the carcass 1, and a mechanism spring 21 having four support points, the first support point 28 (in the position of the closed switch shown in the figure 1) located on the free end 13 of the connecting rod 11 and on the movable contact CM, a fulcrum 22 on the contact mobile CM, and another fulcrum 27 on the carcass 1.
  • the third kinematic chain C is formed by a magnetic trigger mechanism that responds by way electromagnetic to excess circuit current in which the circuit breaker is inserted.
  • This chain is formed a movable core 30 which slides inside an axis of coil 31.
  • the fourth set D is composed of a blade bimetallic 40 which responds thermally to excess current flowing in the circuit in which the circuit breaker is intercalated, thus constituting the system of thermal release.
  • the last kinematic chain E is formed by striker 50 made of a rotating piece of insulating material around the axis 51, which is part of the carcass 1, and a thermal rod 55.
  • the striker has four points main functional: the magnetic opening point 52, the point of rotation of the thermal rod 55; the third functional point is the trigger arm 56 and, finally, the external trigger points 57.
  • the operation of the main current circuit and the various mechanisms that make up the circuit breaker is as follows: the circuit breaker being in the state of establishment (FIG. 1), the current enters the circuit breaker through the input terminal 60, mounted on the carcass 1.
  • Electric current flows through the tab 61, which is welded to one end 62 of the coil electromagnetic 32. From coil 32, current flows to fixed contact CF through contact pad 33. From fixed contact CF, it goes to the mobile contact CM through the point of contact 34. At this point of contact, there may have two types of construction: one in which the fixed contact CF comes into direct contact with the contact mobile CM and another in which this contact is made by via a contact pad 33.
  • the current flows to the bimetal 40 by a braid 45 welded on the movable contact CM to a end and on the bimetal 40 at the other end.
  • the different mechanisms that make up the circuit breaker correspond to five operating modes: closing normal circuit breaker, normal opening of the circuit breaker, opening by thermal release, opening by magnetic release, and short-circuit opening.
  • the normal establishment and cut-off mechanism of the circuit breaker is formed by chains A and B.
  • the normal shutdown mechanism is the same as that of establishment, and it is formed by chains kinematics A and B.
  • the spring 21 causes the rotation of the movable contact CM around the axis 20 by the trigger of the compression established in the body of the spring 21 during the closure.
  • the spring resets the handle 14, making turn the lever M to its cut-off position.
  • the opening by electromagnetic trigger is produced in the presence of an excess of overcurrent in the main current circuit.
  • the electric current Passing through coil 32, the electric current generates a magnetic flux inside the circuit formed fixed contact CF (which acts as a magnetic casing) and the movable core 30.
  • the magnetic flux creates in this nucleus an electromagnetic force which tends to move it forward, sliding inside its guide 31 (spool pin) in the direction of striker 50.
  • the rotation of the striker 50 causes the displacement trigger arm 56, causing the opening of the contacts in the same way as in the opening by thermal release.

Landscapes

  • Breakers (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Valve Device For Special Equipments (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)

Abstract

This automatic circuit breaker comprises mechanisms which effect normal closing and normal opening of the circuit breaker, opening by thermal tripping, opening by magnetic tripping and opening by short-circuiting. The mechanism for normal closing and normal opening of the circuit breaker consists of a handle (M), a handle spring (14), a link rod (11), a moving contact (CM) and a multifunction mechanism spring (21), with tripping by the bearing of the free end of the link rod upon the bearing point (28) of the spring (21). The electromagnetic opening device has a fixed contact (CF) acting as a magnetic shell, the arrangement of which within this device makes it possible to obtain a magnetic tripping mechanism having no fixed core and no spring for positioning the moving core. <IMAGE>

Description

La présente invention concerne un disjoncteur automatique qui présente toute une série d'importants avantages et d'importantes innovations comparativement aux disjoncteurs actuels utilisés à des fins identiques ou similaires.The present invention relates to a circuit breaker automatic which presents a whole series of important advantages and important innovations compared to current circuit breakers used for the same purpose or similar.

Plus concrètement, l'invention a pour objet un mécanisme de disjoncteur ayant un pouvoir de coupure par limitation du courant.More specifically, the invention relates to a circuit breaker mechanism having breaking capacity by current limitation.

Actuellement, et en se référant à l'état actuel de la technique, on doit constater l'existence de différents types de disjoncteurs dont le grand nombre de pièces et une complication fonctionnelle excessive entraínent une grande consommation et un grand nombre de pannes, ainsi qu'un coût excessif.Currently, and referring to the current state of technique, we have to note the existence of different types of circuit breakers including the large number of parts and a excessive functional complication cause great consumption and a large number of breakdowns, as well as a cost excessive.

Pour éviter ces inconvénients, la demanderesse a inventé un nouveau type de disjoncteur dont la simplicité de constitution et de fonctionnement abaisse considérablement le coût de ce type d'appareil en même temps qu'elle garantit un fonctionnement qui présente de notables améliorations techniques comparativement aux disjoncteurs actuellement en utilisation.To avoid these disadvantages, the plaintiff has invented a new type of circuit breaker whose simplicity of constitution and functioning lowers considerably the cost of this type of device at the same time it guarantees an operation that presents significant technical improvements compared to circuit breakers currently in use.

Le disjoncteur automatique objet de la présente invention est essentiellement constitué par des mécanismes qui exécutent la fermeture et l'ouverture normales du disjoncteur, l'ouverture par déclenchement thermique, l'ouverture par déclenchement magnétique et l'ouverture par court-circuit.The automatic circuit breaker object of this invention essentially consists of mechanisms who perform the normal closing and opening of the circuit breaker, opening by thermal tripping, opening by magnetic release and opening by short circuit.

Le mécanisme de fonctionnement normal d'établissement et de coupure du disjoncteur n'est formé que de cinq pièces : manette, ressort de manette, bielle, ressort de mécanisme et contact mobile.The normal operating mechanism of establishment and breaker breaker is only formed of five parts: lever, lever spring, connecting rod, spring mechanism and movable contact.

DE-A-36 19 239 montre un disjoncteur automatique conforme au préambule de la revendication 1.DE-A-36 19 239 shows an automatic circuit breaker according to the preamble of claim 1.

Le disjoncteur selon la présente invention s'en distingue par les caractéristiques définies dans la partie caractérisante de la revendication 1. The circuit breaker according to the present invention is distinguished by the characteristics defined in the section Characterizing of claim 1.

L'enclenchement du mécanisme des fonctions normales d'établissement et de coupure du disjoncteur se produit entre l'extrémité libre de la bielle et une extrémité du ressort de mécanisme (point d'appui).Activation of the mechanism of normal functions breaker establishment and breaking occurs between the free end of the connecting rod and one end of the mechanism spring (fulcrum).

Cet enclenchement est composé de deux pièces de fil métallique dans lesquelles les génératrices sont parallèles, la section des deux pièces pouvant être quelconque, cylindrique, carrée, rectangulaire, etc..This engagement is made up of two pieces of wire metallic in which the generators are parallel, the section of the two parts can be arbitrary, cylindrical, square, rectangular, etc.

De préférence, on a prévu d'incorporer dans ledit mécanisme une colonne flexible qui fait partie de la manette.Preferably, provision has been made to incorporate into said mechanism a flexible column which is part of the handle.

En se déformant et en changeant de position, cette colonne exerce une pression sur la bielle, en développant une action de ressort sur celle-ci pour la maintenir en position de pré-établissement indépendamment de la position de montage de l'interrupteur.By deforming and changing position, this column exerts pressure on the connecting rod, developing a spring action on it to keep it in pre-establishment position regardless of position mounting the switch.

L'action de ressort reste conservée à l'amorçage de la manoeuvre d'établissement de l'appareil, en réapparaissant ensuite après que la bielle a commencé à s'appuyer sur le ressort de mécanisme.The spring action remains preserved when the the device setting maneuver, reappearing then after the connecting rod has started to lean on the mechanism spring.

Ce système d'enclenchement et de réarmement est inconnu dans les disjoncteurs actuels et son utilisation permet d'intégrer la fonction d'enclenchement dans des ensembles bielle-ressort en réduisant ainsi le nombre des pièces et en abaissant le prix de revient.This interlocking and resetting system is unknown in current circuit breakers and its use allows the interlocking function to be integrated into connecting rod-spring assemblies thereby reducing the number of parts and lowering the cost price.

Selon un mode de réalisation préféré, le dispositif d'ouverture électromagnétique présente la nouveauté consistant en ce que le contact fixe exerce aussi les fonctions de carcasse magnétique, en fermant le circuit magnétique du mécanisme de déclenchement magnétique. En outre, il est dimensionné, par son épaisseur, et grâce au logement prévu pour la bobine, de manière que les enroulements de cette bobine soient concentrés dans l'intervalle entre la carcasse et le noyau mobile, ce qui permet d'obtenir un mécanisme de déclenchement magnétique dépourvu de noyau fixe, en apportant ainsi d'importants qui va suivre d'un exemple de réalisation et en se référant aux dessins annexés sur lesquels :
   les figures 1 et 2 sont deux schémas du disjoncteur, dans ses positions d'établissement et de coupure respectivement.According to a preferred embodiment, the electromagnetic opening device has the novelty that the fixed contact also performs the functions of a magnetic casing, by closing the magnetic circuit of the magnetic tripping mechanism. In addition, it is dimensioned, by its thickness, and thanks to the housing provided for the coil, so that the windings of this coil are concentrated in the interval between the carcass and the movable core, which makes it possible to obtain a mechanism magnetic trip devoid of a fixed core, thereby providing important which will follow from an exemplary embodiment and with reference to the accompanying drawings in which:
Figures 1 and 2 are two diagrams of the circuit breaker, in its establishment and breaking positions respectively.

Sur les figures, on voit que l'appareil comprend un boítier composé d'une carcasse 1 et d'un couvercle 2 en matière isolante, un ensemble d'éléments constitutifs du système d'interruption du courant électrique, et qui sont actionnés manuellement à l'aide d'une manette M qui émerge à l'extérieur du boítier, et un système d'extinction de courts-circuits 3 essentiellement formé d'une chambre 4 de soufflage de l'arc, et d'une piste d'arc 5.In the figures, it can be seen that the apparatus comprises a case composed of a carcass 1 and a cover 2 in insulating material, a set of components of the electrical current interruption system, and which are manually operated using an M stick that emerges outside the housing, and a fire extinguishing system short circuits 3 essentially formed by a chamber 4 of blowing of the arc, and of an arc track 5.

Le système d'interruption du courant électrique est un mécanisme qui est composé de cinq chaínes cinématiques.The electrical current interruption system is a mechanism which is composed of five kinematic chains.

La première chaíne A est formée de la manette M qui tourne autour d'un axe 10, lequel fait partie de la carcasse 1, d'une bielle 11, dont une des extrémités est enfilée dans un trou 12 pratiqué dans la manette M et dans lequel elle peut tourner librement, l'autre extrémité étant libre, et d'un ressort 14 de réarmement de la manette.The first chain A is formed by the lever M which rotates around an axis 10, which is part of the carcass 1, of a connecting rod 11, one end of which is threaded in a hole 12 made in the lever M and in which it can rotate freely, the other end being free, and a spring 14 for resetting the lever.

La seconde chaíne cinématique B est formée du contact mobile CM, qui est une pièce de matière conductrice qui tourne autour de l'axe 20, lequel fait partie de la carcasse 1, et d'un ressort de mécanisme 21 possédant quatre points d'appui, le premier point d'appui 28 (dans la position de l'interrupteur fermé représentée sur la figure 1) se trouvant sur l'extrémité libre 13 de la bielle 11 et sur le contact mobile CM, un point d'appui 22 sur le contact mobile CM, et un autre point d'appui 27 sur la carcasse 1.The second kinematic chain B is formed by movable contact CM, which is a piece of conductive material which revolves around axis 20, which is part of the carcass 1, and a mechanism spring 21 having four support points, the first support point 28 (in the position of the closed switch shown in the figure 1) located on the free end 13 of the connecting rod 11 and on the movable contact CM, a fulcrum 22 on the contact mobile CM, and another fulcrum 27 on the carcass 1.

La troisième chaíne cinématique C est formée d'un mécanisme de déclenchement magnétique qui répond par voie électromagnétique à un excès de courant du circuit dans lequel le disjoncteur est intercalé. Cette chaíne est formé d'un noyau mobile 30 qui coulisse à l'intérieur d'un axe de bobine 31. qui va suivre d'un exemple de réalisation et en se référant aux dessins annexés sur lesquels :
   les figures 1 et 2 sont deux schémas du disjoncteur, dans ses positions d'établissement et de coupure respectivement.The third kinematic chain C is formed by a magnetic trip mechanism which responds electromagnetically to an excess of current in the circuit in which the circuit breaker is inserted. This chain is formed of a movable core 30 which slides inside a spool pin 31. which will follow from an exemplary embodiment and with reference to the appended drawings in which:
Figures 1 and 2 are two diagrams of the circuit breaker, in its establishment and breaking positions respectively.

Sur les figures, on voit que l'appareil comprend un boítier composé d'une carcasse 1 et d'un couvercle 2 en matière isolante, un ensemble d'éléments constitutifs du système d'interruption du courant électrique, et qui sont actionnés manuellement à l'aide d'une manette M qui émerge à l'extérieur du boítier, et un système d'extinction de courts-circuits 3 essentiellement formé d'une chambre 4 de soufflage de l'arc, et d'une piste d'arc 5.In the figures, it can be seen that the apparatus comprises a case composed of a carcass 1 and a cover 2 in insulating material, a set of components of the electrical current interruption system, and which are manually operated using an M stick that emerges outside the housing, and a fire extinguishing system short circuits 3 essentially formed by a chamber 4 of blowing of the arc, and of an arc track 5.

Le système d'interruption du courant électrique est un mécanisme qui est composé de cinq chaínes cinématiques.The electrical current interruption system is a mechanism which is composed of five kinematic chains.

La première chaíne A est formée de la manette M qui tourne autour d'un axe 10, lequel fait partie de la carcasse 1, d'une bielle 11, dont une des extrémités est enfilée dans un trou 12 pratiqué dans la manette M et dans lequel elle peut tourner librement, l'autre extrémité étant libre, et d'un ressort 14 de réarmement de la manette.The first chain A is formed by the lever M which rotates around an axis 10, which is part of the carcass 1, of a connecting rod 11, one end of which is threaded in a hole 12 made in the lever M and in which it can rotate freely, the other end being free, and a spring 14 for resetting the lever.

La seconde chaíne cinématique B est formée du contact mobile CM, qui est une pièce de matière conductrice qui tourne autour de l'axe 20, lequel fait partie de la carcasse 1, et d'un ressort de mécanisme 21 possédant quatre points d'appui, le premier point d'appui 28 (dans la position de l'interrupteur fermé représentée sur la figure 1) se trouvant sur l'extrémité libre 13 de la bielle 11 et sur le contact mobile CM, un point d'appui 22 sur le contact mobile CM, et un autre point d'appui 27 sur la carcasse 1.The second kinematic chain B is formed by movable contact CM, which is a piece of conductive material which revolves around axis 20, which is part of the carcass 1, and a mechanism spring 21 having four support points, the first support point 28 (in the position of the closed switch shown in the figure 1) located on the free end 13 of the connecting rod 11 and on the movable contact CM, a fulcrum 22 on the contact mobile CM, and another fulcrum 27 on the carcass 1.

La troisième chaíne cinématique C est formée d'un mécanisme de déclenchement magnétique qui répond par voie électromagnétique à un excès de courant du circuit dans lequel le disjoncteur est intercalé. Cette chaíne est formé d'un noyau mobile 30 qui coulisse à l'intérieur d'un axe de bobine 31. The third kinematic chain C is formed by a magnetic trigger mechanism that responds by way electromagnetic to excess circuit current in which the circuit breaker is inserted. This chain is formed a movable core 30 which slides inside an axis of coil 31.

Le quatrième ensemble D est composé d'une lame bimétallique 40 qui répond par voie thermique à l'excès de courant qui passe dans le circuit dans lequel le disjoncteur est intercalé, en constituant ainsi le système de déclenchement thermique.The fourth set D is composed of a blade bimetallic 40 which responds thermally to excess current flowing in the circuit in which the circuit breaker is intercalated, thus constituting the system of thermal release.

La dernière chaíne cinématique E est formée du percuteur 50 fait d'une pièce de matière isolante qui tourne autour de l'axe 51, lequel fait partie de la carcasse 1, et d'une bielle thermique 55. Le percuteur a quatre points fonctionnels principaux : le point d'ouverture magnétique 52, le point de rotation de la bielle thermique 55 ; le troisième point fonctionnel est le bras de déclenchement 56 et, finalement, les points de déclenchement extérieurs 57.The last kinematic chain E is formed by striker 50 made of a rotating piece of insulating material around the axis 51, which is part of the carcass 1, and a thermal rod 55. The striker has four points main functional: the magnetic opening point 52, the point of rotation of the thermal rod 55; the third functional point is the trigger arm 56 and, finally, the external trigger points 57.

Le fonctionnement du circuit principal de courant et des différents mécanismes qui composent le disjoncteur est le suivant :
   le disjoncteur étant dans l'état d'établissement (figure 1), le courant entre dans le disjoncteur à travers la borne d'entrée 60, montée sur la carcasse 1.The operation of the main current circuit and the various mechanisms that make up the circuit breaker is as follows:
the circuit breaker being in the state of establishment (FIG. 1), the current enters the circuit breaker through the input terminal 60, mounted on the carcass 1.

Le courant électrique passe à travers la languette 61, qui est soudée à une extrémité 62 de la bobine électromagnétique 32. De la bobine 32, le courant passe au contact fixe CF à travers la pastille de contact 33. Du contact fixe CF, il passe au contact mobile CM à travers le point de contact 34. En ce point de contact, il peut y avoir deux types de construction : l'un dans lequel le contact fixe CF entre en contact direct avec le contact mobile CM et un autre dans lequel ce contact se fait par l'intermédiaire d'une pastille de contact 33.Electric current flows through the tab 61, which is welded to one end 62 of the coil electromagnetic 32. From coil 32, current flows to fixed contact CF through contact pad 33. From fixed contact CF, it goes to the mobile contact CM through the point of contact 34. At this point of contact, there may have two types of construction: one in which the fixed contact CF comes into direct contact with the contact mobile CM and another in which this contact is made by via a contact pad 33.

Du contact mobile CM, le courant passe au bimétal 40 par une tresse 45 soudée sur le contact mobile CM à une extrémité et sur le bimétal 40 à l'autre extrémité.From the mobile contact CM, the current flows to the bimetal 40 by a braid 45 welded on the movable contact CM to a end and on the bimetal 40 at the other end.

Le courant parvient à la borne de sortie 63 à travers le bimétal 40 et une seconde tresse 42.Current reaches output terminal 63 at through the bimetal 40 and a second braid 42.

Les différents mécanismes qui composent le disjoncteur correspondent à cinq modes de fonctionnement : fermeture normale du disjoncteur, ouverture normale du disjoncteur, ouverture par déclenchement thermique, ouverture par déclenchement magnétique, et ouverture par court-circuit.The different mechanisms that make up the circuit breaker correspond to five operating modes: closing normal circuit breaker, normal opening of the circuit breaker, opening by thermal release, opening by magnetic release, and short-circuit opening.

Le mécanisme d'établissement et de coupure normaux du disjoncteur est formé par les chaínes A et B.The normal establishment and cut-off mechanism of the circuit breaker is formed by chains A and B.

La fermeture normale s'effectue en tournant la manette M de la position de coupure (figure 2) à la position d'établissement (figure 1). Lorsqu'on tourne la manette M autour de l'axe 10, ceci déplace l'extrémité libre 13 de la bielle 11, qui est sollicitée par la colonne flexible 15 de la manette, jusqu'à ce qu'elle entre en contact avec le point d'appui 28 du ressort de mécanisme 21. Une fois le mouvement amorcé, le contact continue à repousser l'extrémité du ressort 28, en la poussant par l'extrémité 13 de la bielle 11 et en agissant par le point d'appui 28 du ressort 21 sur le contact mobile CM ; il se produit une rotation de ce contact mobile autour de l'axe 20, de sorte que l'extrémité 29 du contact mobile CM rencontre le contact fixe CF, en établissant le contact électrique tandis que, lorsqu'on continue à tourner la manette M jusqu'au bout de sa course, définie par l'extrémité libre de la bielle 13, ceci provoque une flexion du ressort 21, en créant un effort de pression de contact au point 24.Normal closing is done by turning the lever M from the cut-off position (figure 2) to the position of establishment (figure 1). When we turn the joystick M around the axis 10, this moves the free end 13 of the connecting rod 11, which is stressed by the flexible column 15 of the joystick, until it comes into contact with the fulcrum 28 of the mechanism spring 21. Once the movement initiated, contact continues to push end spring 28, pushing it through the end 13 of the connecting rod 11 and by acting on the fulcrum 28 of the spring 21 on the mobile contact CM; there is a rotation of this movable contact around the axis 20, so that the end 29 of the movable contact CM meets the contact fixed CF, making electrical contact while, when you keep turning knob M until the end of its stroke, defined by the free end of the connecting rod 13, this causes the spring 21 to bend, creating a contact pressure force at point 24.

L'ouverture normale s'effectue en tournant la manette M de la position d'établissement (figure 1) à la position de coupure (figure 2).Normal opening is done by turning the handle M from the establishment position (Figure 1) to the cut-off position (figure 2).

Le mécanisme de coupure normale est le même que celui d'établissement, et il est formé par les chaínes cinématiques A et B.The normal shutdown mechanism is the same as that of establishment, and it is formed by chains kinematics A and B.

Le fonctionnement est l'inverse de celui décrit dans le cas de l'établissement normal.Operation is the opposite of that described in the case of normal establishment.

L'ouverture par déclenchement thermique se produit lorsqu'un excès de courant traverse le disjoncteur.Thermal trip opening occurs when excess current flows through the circuit breaker.

Dans cette ouverture, interviennent les chaínes cinématiques D et E qui forment le mécanisme de déclenchement thermique qui provoque l'ouverture du mécanisme de coupure formé par les chaínes A et B.In this opening, the chains intervene kinematics D and E which form the trigger mechanism thermal which causes the opening of the cut formed by chains A and B.

En fonctionnement normal, lorsqu'on ferme un disjoncteur, le courant qui passe par le bimétal 40 produit un échauffement progressif de celui-ci jusqu'à ce qu'il ait atteint une température de régime de fonctionnement normal.In normal operation, when a circuit breaker is closed, the current flowing through the bimetal 40 produces a gradual heating of it until it has reaches a normal operating temperature.

En cas de fonctionnement anormal, dans lequel il se produit un excès de courant qui passe par le disjoncteur et parcourt le bimétal 40, il se produit un plus fort échauffement, ce qui provoque un déplacement supplémentaire de l'extrémité libre du bimétal, qui entre en contact avec la bielle thermique 55 ; ce déplacement provoque la rotation du percuteur 50 autour de l'axe 51, ce qui provoque le déplacement du bras de déclenchement 56 qui, à son tour, pousse l'extrémité 13 de la bielle 11, en lui faisant perdre le contact avec le point d'appui 28 du ressort de mécanisme 21 et il en résulte que la liaison cinématique des chaínes A et B est rompue.In the event of abnormal operation, in which it produces excess current flowing through the circuit breaker and travels through bimetal 40, a stronger occurs overheating, which causes additional displacement of the free end of the bimetal, which comes into contact with the thermal rod 55; this displacement causes the rotation of striker 50 about axis 51, which causes the displacement of the trigger arm 56 which, at in turn, pushes the end 13 of the connecting rod 11, in him losing contact with the fulcrum 28 of the mechanism spring 21 and it follows that the connection kinematics of chains A and B is broken.

Lorsque la chaíne cinématique est rompue, les deux mécanismes reviennent à leur position stable, qui correspond à l'état de coupure, sous l'effet du ressort de mécanisme 21.When the kinematic chain is broken, the two mechanisms return to their stable position, which corresponds in the cut-off state, under the effect of the spring of mechanism 21.

Lorsque son point de contact 28 avec l'extrémité de la bielle 13 est libéré, le ressort 21 provoque la rotation du contact mobile CM autour de l'axe 20 par la détente de la compression établie dans le corps du ressort 21 pendant la fermeture. Le ressort réarme la manette 14, en faisant tourner la manette M jusqu'à sa position de coupure.When its point of contact 28 with the end of the connecting rod 13 is released, the spring 21 causes the rotation of the movable contact CM around the axis 20 by the trigger of the compression established in the body of the spring 21 during the closure. The spring resets the handle 14, making turn the lever M to its cut-off position.

L'ouverture par déclenchement électromagnétique se produit en présence d'un excès de surintensité dans le circuit de courant principal.The opening by electromagnetic trigger is produced in the presence of an excess of overcurrent in the main current circuit.

Dans cette ouverture, interviennent les chaínes C et E, qui forment le mécanisme de déclenchement électromagnétique et qui provoquent l'ouverture du mécanisme d'établissement et de coupure du disjoncteur, qui est formé par les chaínes A et B. In this opening, the C chains intervene and E, which form the electromagnetic trigger mechanism and which cause the opening of the mechanism setting and breaking of the circuit breaker, which is formed by chains A and B.

Dans le fonctionnement normal, lorsque l'appareil est en position d'établissement (figure 1), le percuteur 50 maintient le noyau mobile 30 dans la position de fonctionnement normal sans avoir besoin de ressort.In normal operation, when the device is in the set position (Figure 1), the striker 50 maintains the movable core 30 in the operating position normal without the need for a spring.

En passant dans la bobine 32, le courant électrique engendre un flux magnétique à l'intérieur du circuit formé du contact fixe CF (qui joue le rôle de carcasse magnétique) et du noyau mobile 30.Passing through coil 32, the electric current generates a magnetic flux inside the circuit formed fixed contact CF (which acts as a magnetic casing) and the movable core 30.

En traversant le noyau mobile 30, le flux magnétique crée dans ce noyau une force électromagnétique qui tend à le faire avancer, en glissant à l'intérieur de son guide 31 (axe de bobine) en direction du percuteur 50.By crossing the mobile core 30, the magnetic flux creates in this nucleus an electromagnetic force which tends to move it forward, sliding inside its guide 31 (spool pin) in the direction of striker 50.

Lorsqu'il existe un excès de courant suffisant pour mettre le noyau mobile 30 en mouvement, celui-ci glisse à l'intérieur du guide 31, jusqu'à ce qu'il frappe le point d'ouverture magnétique 52, en faisant ainsi tourner le percuteur 50 autour de l'axe 51.When there is an excess of current sufficient to put the moving core 30 in motion, it slides at inside the guide 31, until it hits the point opening 52, thereby rotating the striker 50 around axis 51.

La rotation du percuteur 50 provoque le déplacement du bras de déclenchement 56, en provoquant l'ouverture des contacts de la même façon que dans l'ouverture par déclenchement thermique.The rotation of the striker 50 causes the displacement trigger arm 56, causing the opening of the contacts in the same way as in the opening by thermal release.

Dans le cas d'un court-circuit, il se produit un excès d'intensité qui est normalement de plus de cinquante fois supérieur au courant normal, et il est très supérieur à l'excès de surintensité qui a été mentionné dans le cas de l'ouverture par déclenchement électromagnétique. Dans ce cas, l'ouverture des contacts, qui se produit par l'intermédiaire du mécanisme d'établissement et de coupure A et B, qui est celui qui ouvre les contacts dans les deux modes d'ouverture décrits plus haut, n'est pas suffisamment rapide pour ce type de défaut.In the event of a short circuit, a excess intensity which is normally over fifty times higher than normal current, and it is much higher to the excess overcurrent that was mentioned in the case opening by electromagnetic trigger. In this case, the opening of contacts, which occurs through of the establishment and cut-off mechanism A and B, who is the one who opens contacts in both modes opening described above, is not enough fast for this type of fault.

Dans le cas d'un excès de courant par court-circuit, la force qui pousse le noyau mobile 30 est beaucoup plus grande que dans le cas de l'ouverture par déclenchement électromagnétique. Cette force se transmet au percuteur 50, en le faisant tourner sur l'axe 51. A travers le bras de déclenchement 56 du percuteur 50, cette rotation agit sur le mécanisme d'établissement et de coupure A et B du disjoncteur de la même façon que dans les cas d'ouverture thermique et magnétique.In the event of an excess current by short circuit, the force that pushes the moving core 30 is much larger than in the case of opening by electromagnetic trip. This force is transmitted to the striker 50, by rotating it on the axis 51. Through the trigger arm 56 of the striker 50, this rotation acts on the establishment and cut-off mechanism A and B of the circuit breaker in the same way as in the cases thermal and magnetic opening.

Lorsque les chaínes A et B ont été libérées, le percuteur 50 continue à tourner, de sorte que le point d'extraction 70 entre en contact avec le contact mobile CM, en lui transmettant une impulsion qui le fait tourner autour de l'axe 20.When channels A and B have been released, the striker 50 continues to rotate, so that the point extraction 70 comes into contact with the movable contact CM, by transmitting to it an impulse which makes it rotate around axis 20.

Cette séparation se produit avant l'instant où elle se serait faite sous l'effet de l'actionnement normal des mécanismes d'établissement et de coupure A et B.This separation occurs before the moment when it would be done under the effect of the normal actuation of establishment and disconnection mechanisms A and B.

Claims (4)

  1. Automatic circuit-breaker of the type including mechanisms which perform normal opening and closure of the circuit-breaker, opening by thermal tripping, opening by magnetic tripping and opening by short-circuit, in which the mechanism for normal closure and opening of the circuit-breaker includes a hand-lever (M), a spring (14) for resetting the hand-lever (M), a connecting rod (11) hinged on the hand-lever (M), a mechanism spring (21) and a mobile contact (CM) capable of being in contact with a fixed contact (CF) in the closure position, the said mobile contact (CM) being capable of being moved from the opening position to the closure position by the said connecting rod (11) by operation of the said hand-lever (M), and being biased towards the opening position by the mechanism spring (21),
    characterised by the fact that the free end (13) of the connecting rod (11) has a straight section arranged opposite another straight section of the arm catching the mechanism spring (21) on the mobile contact (CM), the said sections defining an interlocking bearing of the free end (13) of the connecting rod (11) on the bearing point (28) of the mechanism spring (21) on the mobile contact (CM) for operation of the mobile contact (CM) by means of the hand-lever (M), and by the fact that, on rotation of the hand-lever (M) towards the closure position, the said free end (13) of the connecting rod (11) pushes back the end of the spring (21) causing flexing of the latter and creating a force of pressure of contact between the mobile contact (CM) and the fixed contact (CF) in the closure position.
  2. Automatic circuit-breaker as described in claim 1, characterised by the fact that the hand-lever (M) includes a flexible column (15) which applies a spring action to the connecting rod (11), so as to keep it in a pre-make position, when the said circuit-breaker is in the break position.
  3. Automatic circuit-breaker as described in claims 1 and 2, characterised by the fact that the electromagnetic opening device is formed by a fixed contact (CF) which also acts as magnetic carcase, the said carcase having an open configuration in which the corresponding coil (32) is housed between the said fixed contact (CF) and a mobile core (30), without requiring a fixed core.
  4. Automatic circuit-breaker as described in claims 1 and 3, characterised by the fact that the mobile core (30) remains bearing against a rockable plunger (50) which applies a thrust to keep the said mobile core (30) in its normal position without the aid of a spring.
EP93400938A 1992-04-13 1993-04-09 Automatic circuit breaker Expired - Lifetime EP0566462B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES9200801 1992-04-13
ES09200801A ES2047445B1 (en) 1992-04-13 1992-04-13 AUTOMATIC CIRCUIT BREAKER.

Publications (2)

Publication Number Publication Date
EP0566462A1 EP0566462A1 (en) 1993-10-20
EP0566462B1 true EP0566462B1 (en) 1998-06-24

Family

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Application Number Title Priority Date Filing Date
EP93400938A Expired - Lifetime EP0566462B1 (en) 1992-04-13 1993-04-09 Automatic circuit breaker

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EP (1) EP0566462B1 (en)
AT (1) ATE167754T1 (en)
DE (1) DE69319271T2 (en)
ES (1) ES2047445B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2147158B1 (en) * 1998-12-30 2001-03-01 Power Controls Iberica Sl IMPROVEMENTS IN AUTOMATIC GROUND EXHAUST CIRCUITS.
DE10324390A1 (en) * 2003-05-30 2004-12-23 Abb Patent Gmbh Electrical release device for an electric switch, fits in a casing with moving and fixed contacts, a switch latch, an electromagnetic tripping device with an armature, a core, a coil and a yoke

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2137387B1 (en) * 1971-05-18 1976-05-28 Stopcircuit Sa
DE2132738B1 (en) * 1971-07-01 1972-07-06 Ellenberger & Poensgen Single or multi-pole overcurrent switch with thermal and / or electromagnetic release
US3783423A (en) * 1973-01-30 1974-01-01 Westinghouse Electric Corp Circuit breaker with improved flux transfer magnetic actuator
DE2504954B2 (en) * 1975-02-06 1976-12-02 Fa. Heinrich Kopp, Inh. Theodor Simoneit, 8756 Kahl MECHANICAL JUMPER, IN PARTICULAR FOR SMALL HIGH-PERFORMANCE SELF-SWITCHES
DD132379B1 (en) * 1976-08-02 1981-04-29 Guenther Kammer OVERLOAD CABLE SWITCH IN NARROW CONSTRUCTION
ES247088U (en) * 1979-11-13 1980-03-16 Enrique Garrell Alsina Sa Automatic circuit breaker
US4313098A (en) * 1980-01-16 1982-01-26 Westinghouse Electric Corp. Circuit interrupter trip unit
JPS56162436A (en) * 1980-05-20 1981-12-14 Matsushita Electric Works Ltd Circuit breaker
FR2582857B1 (en) * 1985-05-29 1989-04-28 Merlin Gerin SINGLE POLE AND NEUTRAL CIRCUIT BREAKER WITH SHUNT EFFECT
DE3619239A1 (en) * 1986-06-07 1987-12-10 Kloeckner Moeller Elektrizit Rapid-action tripping device for line protection circuit breakers
FR2646015B1 (en) * 1989-04-18 1991-06-07 Gec Unelec ELECTRIC CIRCUIT BREAKER
FR2648615B1 (en) * 1989-06-16 1991-09-13 Hager Electro IMPROVEMENTS ON AUTOMATIC SWITCHES, IN PARTICULAR FOR CIRCUIT BREAKERS AND CIRCUIT BREAKERS

Also Published As

Publication number Publication date
ES2047445R (en) 1996-02-01
ES2047445B1 (en) 1996-09-01
ES2047445A2 (en) 1994-02-16
DE69319271D1 (en) 1998-07-30
ATE167754T1 (en) 1998-07-15
DE69319271T2 (en) 1999-01-07
EP0566462A1 (en) 1993-10-20

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