EP0566462A1 - Automatic circuit breaker - Google Patents
Automatic circuit breaker Download PDFInfo
- Publication number
- EP0566462A1 EP0566462A1 EP93400938A EP93400938A EP0566462A1 EP 0566462 A1 EP0566462 A1 EP 0566462A1 EP 93400938 A EP93400938 A EP 93400938A EP 93400938 A EP93400938 A EP 93400938A EP 0566462 A1 EP0566462 A1 EP 0566462A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- opening
- circuit breaker
- spring
- magnetic
- connecting rod
- 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.)
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- 230000007246 mechanism Effects 0.000 claims abstract description 49
- 230000009471 action Effects 0.000 claims description 4
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- 230000000694 effects Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 208000031968 Cadaver Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000000605 extraction Methods 0.000 description 1
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- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
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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
- H01H71/50—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
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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
- H01H71/24—Electromagnetic mechanisms
- H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
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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
- H01H71/24—Electromagnetic mechanisms
- H01H71/2463—Electromagnetic mechanisms with plunger type armatures
Definitions
- the present invention relates to an automatic circuit breaker which has a whole series of important advantages and important innovations compared to current circuit breakers used for identical or similar purposes.
- the invention relates to a circuit breaker mechanism having a breaking capacity by limiting the current.
- the automatic circuit breaker object of the present invention is essentially constituted by mechanisms which execute the normal closing and opening of the circuit breaker, opening by thermal tripping, opening by magnetic tripping and opening by short circuit.
- the normal operating mechanism for setting and breaking the circuit breaker has the novelty of being formed of only five parts: handle, lever spring, connecting rod, mechanism spring and movable contact.
- This engagement is composed of two pieces of metal wire in which the generators are parallel, the section of the two pieces can be arbitrary, cylindrical, square, rectangular, etc.
- this column By deforming and changing position, this column exerts pressure on the rod, developing a spring action thereon to maintain it in the pre-set position regardless of the mounting position of the switch.
- the spring action is retained when the device establishment maneuver is initiated, then reappearing after the connecting rod has started to rest on the mechanism spring.
- the novelty of the electromagnetic opening device is that 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 by virtue of 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 magnetic tripping mechanism without fixed core, thus bringing significant technical and economic advantages compared to current circuit breakers.
- each of the functions mentioned is provided by a different part, and the interlocking is provided by two parts. In the usual construction this function is performed by at least four pieces.
- the circuit breaker according to the invention comprises a striker which performs multiple functions which, in the case of current circuit breakers, are carried out by a greater number of parts, which implies a notable advantage, both in price and in simplicity of construction.
- the apparatus comprises a housing composed of a carcass 1 and a cover 2 made of insulating material, a set of elements constituting the system for interrupting the electric current, and which are actuated manually at using a lever M which emerges outside the housing, and a short-circuit extinguishing system 3 essentially formed by a chamber 4 for blowing the arc, and an arc track 5.
- the electrical current interruption system is a mechanism which is made up of five kinematic chains.
- the first chain A is formed of 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 into 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 of the movable contact CM, which is a piece of conductive material which rotates around the axis 20, which is part of the carcass 1, and of a mechanism spring 21 having four support points , the first support point 28 (in the closed switch position shown in FIG. 1) being on the free end 13 of the connecting rod 11 and on the movable contact CM, a support point 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 by a movable core 30 which slides inside a spool pin 31.
- the fourth set D is composed of a bimetallic strip 40 which responds thermally to the excess current which passes through the circuit in which the circuit breaker is inserted, thus constituting the thermal trip system.
- the last kinematic chain E is formed by the striker 50 made of a piece of insulating material which rotates around the axis 51, which is part of the carcass 1, and of a thermal rod 55.
- the striker has four main functional points : 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 electric current flows through the tongue 61, which is welded to one end 62 of the electromagnetic coil 32. From the coil 32, the current flows to the fixed contact CF through the contact pad 33. From the fixed contact CF, it passes in mobile contact CM through contact point 34. At this contact point, there can be two types of construction: one in which the fixed contact CF comes into direct contact with the mobile contact CM and another in which this contact is made via a contact pad 35.
- the current flows to the bimetal 40 through a braid 45 welded to the movable contact CM at one end and to the bimetal 40 at the other end.
- the current reaches the output terminal 63 through the bimetal 40 and a second braid 42.
- the different mechanisms that make up the circuit breaker correspond to five operating modes: normal closing of the circuit breaker, normal opening of the circuit breaker, opening by thermal tripping, opening by magnetic tripping, and opening by short circuit.
- the normal circuit breaker establishment and breaking mechanism is formed by chains A and B.
- the contact continues to push the end of the spring 28, pushing it through the end 13 of the connecting rod 11 and acting by the fulcrum 28 of the spring 21 on the movable contact CM; there is a rotation of this movable contact about the axis 20, so that the end 29 of the movable contact CM meets the fixed contact CF, establishing the electrical contact while, when we continue to turn the lever M until the end of its travel, defined by the free end of the connecting rod 13, this causes the spring 21 to bend, creating a contact pressure force at point 34.
- Normal opening is carried out by turning the lever M from the setting position (figure 1) to the cut-off position (figure 2).
- the normal cut-off mechanism is the same as that of establishment, and it is formed by the kinematic chains A and B.
- the spring 21 causes the movable contact CM to rotate about the axis 20 by relaxing the compression established in the body of the spring 25 during closing.
- the spring resets the handle 14, by turning the handle M to its cut-off position.
- the opening by electromagnetic trip occurs in the presence of an excess of overcurrent in the main current circuit.
- the electric current Passing through the coil 32, the electric current generates a magnetic flux inside the circuit formed by the fixed contact CF (which acts as a magnetic carcass) and the movable core 30.
- the magnetic flux creates in this core an electromagnetic force which tends to make it advance, sliding inside its guide 31 (coil axis) in the direction of the striker 50.
- the rotation of the striker 50 causes the trip arm 56 to move, causing the contacts to open in the same way as in the opening by thermal trip.
- the force which pushes the movable core 30 is much greater than in the case of the opening by electromagnetic triggering.
- 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 setting and breaking mechanism A and B of the circuit breaker in the same way than in the case of thermal and magnetic opening.
- the striker 50 continues to rotate, so that the extraction point 70 comes into contact with the movable contact CM, transmitting to it a pulse which makes it rotate around the axis 20.
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- 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
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 an automatic circuit breaker which has a whole series of important advantages and important innovations compared to current circuit breakers used for identical or similar purposes.
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 a breaking capacity by limiting the current.
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 entraînent une grande consommation et un grand nombre de pannes, ainsi qu'un coût excessif.Currently, and referring to the current state of the art, it must be noted that there are different types of circuit breakers, the large number of parts and an excessive functional complication result in high consumption and a large number of failures, as well as '' excessive cost.
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 drawbacks, the applicant has invented a new type of circuit breaker whose simplicity of construction and operation considerably lowers the cost of this type of device at the same time as it guarantees an operation which 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 the present invention is essentially constituted by mechanisms which execute the normal closing and opening of the circuit breaker, opening by thermal tripping, opening by magnetic tripping and opening by short circuit.
Le mécanisme de fonctionnement normal d'établissement et de coupure du disjoncteur présente la nouveauté de n'être formé que de cinq pièces : manette, ressort de manette, bielle, ressort de mécanisme et contact mobile.The normal operating mechanism for setting and breaking the circuit breaker has the novelty of being formed of only five parts: handle, lever spring, connecting rod, mechanism spring and movable contact.
Cette configuration a pour effet que le coût global du mécanisme est très inférieur à celui des disjoncteurs actuels, qui comprennent, selon les cas, des ressorts supplémentaires de réarmement, un ressort de pression de contact, des axes pour la rotation des pièces, et d'autres pièces supplémentaires, un cliquet, des porte-contacts, etc..This configuration has the effect that the overall cost of the mechanism is much lower than that of current circuit breakers, which include, as appropriate, additional reset springs, a contact pressure spring, axes for rotating the parts, and d '' other additional parts, a ratchet, contact holders, etc.
L'enclenchement du mécanisme des fonctions normales d'établissement et de coupure du disjonc- teurse produit entre l'extrémité libre de la bielle et une extrémité du ressort de mécanisme (point d'appui).The engagement of the mechanism of the normal functions of setting up and breaking the circuit breaker produced 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 composed of two pieces of metal wire in which the generators are parallel, the section of the two pieces can be arbitrary, cylindrical, square, rectangular, etc.
De même, on a prévu d'incorporer dans ledit mécanisme une colonne qui fait partie de la manette.Likewise, provision has been made to incorporate into said mechanism a column which forms part of the lever.
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 rod, developing a spring action thereon to maintain it in the pre-set position regardless of the mounting position of 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 is retained when the device establishment maneuver is initiated, then reappearing after the connecting rod has started to rest 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 makes it possible to integrate the interlocking function in rod-spring assemblies thereby reducing the number of parts and lowering the cost price.
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 estdimen- sionné, 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 avantages techniques et économiques comparativement aux disjoncteurs actuels.The novelty of the electromagnetic opening device is 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 by virtue of 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 magnetic tripping mechanism without fixed core, thus bringing significant technical and economic advantages compared to current circuit breakers.
Le ressort de mécanisme inclus dans le mécanisme de fonctionnement normal d'établissement et de coupure du disjoncteur présente la nouveauté consistant en ce qu'il réalise à lui seul les fonctions suivantes :
- de ressort de pression de contact, réalisée par des points d'appui sur le contact mobile et sur l'extrémité libre de la bielle ;
- de ressort d'ouverture du mécanisme, réalisée par les points d'appui sur la carcasse et le contact mobile ;
- d'enclenchement du mécanisme de coupure par ouverture thermique et/ou électromagnétique, par l'appui entre le ressort du mécanisme et l'extrémité libre de la bielle.
- contact pressure spring, produced by support points on the movable contact and on the free end of the connecting rod;
- opening spring of the mechanism, produced by the support points on the carcass and the movable contact;
- for switching on the cut-off mechanism by thermal and / or electromagnetic opening, by pressing between the mechanism spring and the free end of the connecting rod.
Dans les disjoncteurs actuels, chacune des fonctions mentionnées est assurée par une pièce différente, et l'enclenchement est assuré par deux pièces. Dans la construction habituelle cette fonction est réalisée par quatre pièces au minimum.In current circuit breakers, each of the functions mentioned is provided by a different part, and the interlocking is provided by two parts. In the usual construction this function is performed by at least four pieces.
Le disjoncteur selon l'invention comprend un percuteur qui assure des fonctions multiples qui, dans le cas des disjoncteurs actuels, sont réalisées par un plus grand nombre de pièces, ce qui suppose un notable avantage, tant de prix que de simplicité de construction.The circuit breaker according to the invention comprises a striker which performs multiple functions which, in the case of current circuit breakers, are carried out by a greater number of parts, which implies a notable advantage, both in price and in simplicity of construction.
Les fonctions que réalise le percuteur sont les suivantes :
- dans le mécanisme d'ouverture électromagnétique, le percuteur retient le noyau mobile dans sa position de repos, sans exiger de ressort magnétique ;
- dans le mécanisme d'ouverture par déclenchement thermique, le percuteur transmet le mouvement du bimétal au corps principal du percuteur par l'intermédiaire d'un bras d'ouverture thermique.
- in the electromagnetic opening mechanism, the striker retains the movable core in its rest position, without requiring a magnetic spring;
- in the thermal trigger opening mechanism, the striker transmits the movement of the bimetal to the main body of the striker via a thermal opening arm.
D'autres caractéristiques et avantages de l'invention seront mieux compris à la lecture de la description 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.
- 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 boîtier 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 boîtier, 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 housing composed of a carcass 1 and a
Le système d'interruption du courant électrique est un mécanisme qui est composé de cinq chaînes cinématiques.The electrical current interruption system is a mechanism which is made up of five kinematic chains.
La première chaîne 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 of the lever M which rotates around an
La seconde chaîne 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'interrupteurfermé 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 of the movable contact CM, which is a piece of conductive material which rotates around the
La troisième chaîne 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 chaîne 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 trip mechanism which responds electromagnetically to an excess of current in the circuit in which the circuit breaker is inserted. This chain is formed by a
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
La dernière chaîne 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 the
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 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 di- i-rect avec le contact mobile CM et un autre dans lequel ce contact se fait par l'intermédiaire d'une pastille de contact 35.The electric current flows through the
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 movable contact CM, the current flows to the
Le courant parvient à la borne de sortie 63 à travers le bimétal 40 et une seconde tresse 42.The current reaches the
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: normal closing of the circuit breaker, normal opening of the circuit breaker, opening by thermal tripping, opening by magnetic tripping, and opening by short circuit.
Le mécanisme d'établissement et de coupure normaux du disjoncteur est formé par les chaînes A et B.The normal circuit breaker establishment and breaking mechanism 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 34.Normal closing is carried out by turning the lever M from the cut-off position (figure 2) to the set position (figure 1). When the lever M is turned around the
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 carried out by turning the lever M from the setting 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 chaînes cinématiques A et B.The normal cut-off mechanism is the same as that of establishment, and it is formed by the kinematic chains 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 chaînes cinématiques D et E qui forment le mécanisme de déclenchement thermique qui provoque l'ouverture du mécanisme de coupure formé par les chaînes A et B.In this opening, the kinematic chains D and E intervene which form the thermal trigger mechanism which causes the opening of the cut-off mechanism formed by the 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 which passes through the
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 chaînes A et B est rompue.In the event of abnormal operation, in which there is an excess of current which passes through the circuit breaker and travels through the
Lorsque la chaîne 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 to the cut-off state, under the effect of the mechanism spring 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 25 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
L'ouverture par déclenchement électromagnétique se produit en présence d'un excès de surintensité dans le circuit de courant principal.The opening by electromagnetic trip occurs in the presence of an excess of overcurrent in the main current circuit.
Dans cette ouverture, interviennent les chaînes 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 chaînes A et B.In this opening, the chains C and E intervene, which form the electromagnetic tripping mechanism and which cause the opening of the setting and breaking mechanism of the circuit breaker, which is formed by the 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 apparatus is in the establishment position (FIG. 1), the
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 the
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
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 set the
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
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 case of a short circuit, there is an excess of intensity which is normally more than fifty times greater than the normal current, and it is much greater than the excess of overcurrent which was mentioned in the case of opening by electromagnetic release. In this case, the opening of the contacts, which occurs via the establishment and cutting mechanism A and B, which is the one which opens the contacts in the two opening modes described above, is not not fast enough 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 case of an excess of current by short circuit, the force which pushes the
Lorsque les chaînes Aet 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 the chains A and B have been released, the
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 instant when it would have occurred under the effect of the normal actuation of the establishment and cut-off mechanisms A and B.
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES09200801A ES2047445B1 (en) | 1992-04-13 | 1992-04-13 | AUTOMATIC CIRCUIT BREAKER. |
ES9200801 | 1992-04-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0566462A1 true EP0566462A1 (en) | 1993-10-20 |
EP0566462B1 EP0566462B1 (en) | 1998-06-24 |
Family
ID=8276734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93400938A Expired - Lifetime EP0566462B1 (en) | 1992-04-13 | 1993-04-09 | Automatic circuit breaker |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0566462B1 (en) |
AT (1) | ATE167754T1 (en) |
DE (1) | DE69319271T2 (en) |
ES (1) | ES2047445B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108493070A (en) * | 2018-06-08 | 2018-09-04 | 乐清市赛翔电气有限公司 | A kind of electromagnetic release mechanism and its breaker for breaker |
Families Citing this family (2)
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 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2132738B1 (en) * | 1971-07-01 | 1972-07-06 | Ellenberger & Poensgen | Single or multi-pole overcurrent switch with thermal and / or electromagnetic release |
DE2504954A1 (en) * | 1975-02-06 | 1976-08-26 | Kopp Fa Heinrich | Automatic power switch acting as overload trip for small installation - has manual cut out and reset with contacts on top and bottom of arc extinguishing stack |
DD132379A1 (en) * | 1976-08-02 | 1978-09-20 | Guenther Kammer | OVERLOAD CABLE SWITCH IN NARROW CONSTRUCTION |
GB2063566A (en) * | 1979-11-13 | 1981-06-03 | Garrell Alsina Sa | Automatic circuit breaker |
DE3619239A1 (en) * | 1986-06-07 | 1987-12-10 | Kloeckner Moeller Elektrizit | Rapid-action tripping device for line protection circuit breakers |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2137387B1 (en) * | 1971-05-18 | 1976-05-28 | Stopcircuit Sa | |
US3783423A (en) * | 1973-01-30 | 1974-01-01 | Westinghouse Electric Corp | Circuit breaker with improved flux transfer magnetic actuator |
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 |
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 |
-
1992
- 1992-04-13 ES ES09200801A patent/ES2047445B1/en not_active Expired - Fee Related
-
1993
- 1993-04-09 AT AT93400938T patent/ATE167754T1/en not_active IP Right Cessation
- 1993-04-09 DE DE69319271T patent/DE69319271T2/en not_active Expired - Fee Related
- 1993-04-09 EP EP93400938A patent/EP0566462B1/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2132738B1 (en) * | 1971-07-01 | 1972-07-06 | Ellenberger & Poensgen | Single or multi-pole overcurrent switch with thermal and / or electromagnetic release |
DE2504954A1 (en) * | 1975-02-06 | 1976-08-26 | Kopp Fa Heinrich | Automatic power switch acting as overload trip for small installation - has manual cut out and reset with contacts on top and bottom of arc extinguishing stack |
DD132379A1 (en) * | 1976-08-02 | 1978-09-20 | Guenther Kammer | OVERLOAD CABLE SWITCH IN NARROW CONSTRUCTION |
GB2063566A (en) * | 1979-11-13 | 1981-06-03 | Garrell Alsina Sa | Automatic circuit breaker |
DE3619239A1 (en) * | 1986-06-07 | 1987-12-10 | Kloeckner Moeller Elektrizit | Rapid-action tripping device for line protection circuit breakers |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108493070A (en) * | 2018-06-08 | 2018-09-04 | 乐清市赛翔电气有限公司 | A kind of electromagnetic release mechanism and its breaker for breaker |
Also Published As
Publication number | Publication date |
---|---|
ES2047445A2 (en) | 1994-02-16 |
EP0566462B1 (en) | 1998-06-24 |
ES2047445B1 (en) | 1996-09-01 |
ATE167754T1 (en) | 1998-07-15 |
DE69319271T2 (en) | 1999-01-07 |
ES2047445R (en) | 1996-02-01 |
DE69319271D1 (en) | 1998-07-30 |
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