EP1168402A1 - Magnetic subassembly for a mocular electrical device with a limited width - Google Patents

Magnetic subassembly for a mocular electrical device with a limited width Download PDF

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Publication number
EP1168402A1
EP1168402A1 EP00440202A EP00440202A EP1168402A1 EP 1168402 A1 EP1168402 A1 EP 1168402A1 EP 00440202 A EP00440202 A EP 00440202A EP 00440202 A EP00440202 A EP 00440202A EP 1168402 A1 EP1168402 A1 EP 1168402A1
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EP
European Patent Office
Prior art keywords
magnetic
pallet
electrical equipment
assembly
branches
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00440202A
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German (de)
French (fr)
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EP1168402B1 (en
EP1168402B9 (en
Inventor
Stéphane Haessler
Francis Deckert
Patrice C/O Hager Electro Joyeux
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Hager Electro SAS
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Hager Electro SAS
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Filing date
Publication date
Application filed by Hager Electro SAS filed Critical Hager Electro SAS
Priority to PT00440202T priority Critical patent/PT1168402E/en
Priority to AT00440202T priority patent/ATE218749T1/en
Priority to EP00440202A priority patent/EP1168402B9/en
Priority to DE60000200T priority patent/DE60000200T2/en
Publication of EP1168402A1 publication Critical patent/EP1168402A1/en
Publication of EP1168402B1 publication Critical patent/EP1168402B1/en
Application granted granted Critical
Publication of EP1168402B9 publication Critical patent/EP1168402B9/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • 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
    • H01H71/2481—Electromagnetic mechanisms characterised by the coil design
    • 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
    • H01H71/38—Electromagnetic mechanisms wherein the magnet coil also acts as arc blow-out device
    • 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
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms
    • H01H71/402—Combined electrothermal and electromagnetic mechanisms in which the thermal mechanism influences the magnetic circuit of the electromagnetic mechanism

Definitions

  • the present invention relates to a magnetic sub-assembly for modular electrical equipment of the circuit breaker type, enabling the line to be cut in the event of a sudden overcurrent, as well as the equipment fitted therewith.
  • line protection circuit breakers generally include, in a modular housing with plastic shells, a circuit extending between two terminals and comprising a thermal trip bimetal for protecting the line against overloads, a fixed contact and a movable contact and, between a terminal and a fixed contact, an electromagnetic circuit breaker or magnetic trip device.
  • the latter essentially comprises a coil with a movable core associated with a striker to ensure, in the event of an overcurrent, the separation by separation of the movable contact and the fixed contact by means of a mechanical lock to which the movable contact is secured, and which may tip over under the action of the striker.
  • the trigger more precisely comprises an induction coil, mounted longitudinally in a magnetic yoke, and surrounding said movable core associated with the striker, as well as a fixed core, a return spring disposed between the cores further complementing mounting.
  • This spring allows in particular to recall the movable core in the rest position, striker in position inactive, i.e. at a distance from the mechanical lock opening the contacts by tilting the movable contact.
  • the cylinder head consists of a sheet of magnetic material surrounding the coil to properly channel the field lines produced when the coil is traversed by a current.
  • the yoke On either side of said coil, in an axial direction, the yoke conventionally comprises flanks facing one another, one of which is provided with the fixed core, and at the level of which are arranged elements general fixed to the magnetic sub-assembly, that is to say one of the connection terminals of the circuit breaker and the fixed contact.
  • the coil generally takes the form of a solenoid of volume that is therefore substantially cylindrical, the axial and transverse dimensions of which vary according to the sizes, or even from one copy to another for the same size, a dimensional dispersion which cannot be excluded in the manufacture of the coils. For a given size, it is however necessary to maintain a given copper section and a polar section.
  • the solenoids in fact occupy almost the entire width of a simple modular device, that is to say that they extend practically transversely from one shell to the other of the housing.
  • the coils In the constant search for an optimization of the integration of the components in the modular line protection devices, the coils have always represented an element occupying a significant space relatively in internal volume, and considered as difficult to reduce.
  • One of the main objectives of the present invention is to propose a particular configuration which can be adapted to said half-modules.
  • the invention presents a structure provided with a magnetic circuit comprising a fixed portion and a movable portion, whose relative arrangement makes it possible to significantly increase the useful force of the element causing tripping.
  • Yet another objective of the invention can be seen in an optional optimization possibility obtained by combining the two magnetic trip functions following an overcurrent and thermal trip due to an overload.
  • the magnetic sub-assembly of the invention conventionally composed of an induction coil mounted in a magnetic yoke fitted with a device for triggering the lock in order to separate the movable contact from the fixed contact, is characterized in that it has a flat configuration with a spiral coil with at least one winding layer cooperating with a U-shaped magnetic yoke comprising a core developing along the axis of the coil and two branches extending radially towards the periphery of said coil, the free edge of at least one of the branches being separated from a pallet closing the magnetic circuit by an air gap, said pallet being movable relative to the branches, capable of actuating said lock in order to trigger it by overcurrent and controlled by return means bringing it away from said lock in the absence of overcurrent.
  • the proposed configuration involves not only a structural feature of the coil, but also a geometry of the magnetic circuit materialized by the yoke adapted to this structure. It should be noted that it is the movable portion of said circuit which is designed to cooperate directly with the lock, without an intermediate part, which considerably simplifies the structure on the one hand, and the mounting on the other hand.
  • the core of the magnetic yoke can be made of sheets stacked in order to limit the eddy currents, the branches being of planar appearance.
  • a variant with a solid core can however be used.
  • the branches are in fact fixed at the two ends of the core, hence the U-shaped configuration which in reality only relates to the fixed portion of the magnetic circuit.
  • the movable pallet is a bimetallic strip deformed under the effect of a current overload, the ends of said pallet being electrically connected on the one hand to one of the terminals of the electrical equipment and on the other hand to the spiral coil.
  • the pallet a material with properties adapted to the two aspects of the operation, because it is then used on the one hand as part of a magnetic circuit, and on the other hand as blade deformable under the effect of an increase in temperature.
  • the movable pallet is a bimetallic strip deforming under the effect of the heat produced by the coil, said bimetallic strip then not being connected to the electrical circuit of the apparatus.
  • Said lock is therefore arranged, relative to the pallet, so that there can be contact when the latter moves, that is to say in fact so that part of the arm crosses the movement path from the palette.
  • the pallet actually has a shape of blade of width substantially equal to the distance separating the two branches of the cylinder head. More preferably, at least a portion of the trigger arm of the lock is disposed between said branches.
  • the action zone is then located at the free end of the palette, which does not imply any modification / addition across the width.
  • the pallet is movable in rotation about an axis parallel to the axis of the spiral coil, said axis being located near the end of at least one of the branches, outside the U-shaped magnetic yoke.
  • the mobile portion of the permeable magnetic circuit is driven by a rotational movement, which is particularly suitable since, depending on the position of the axis of rotation and the geometry of the pallet, it is possible to envisage reduce the average air gap while maintaining an equal useful stroke for said pallet or at least its active portion: taking into account the traditional specificities of a magnetic circuit, the useful force will then be appreciably increased there.
  • the movable pallet is bent, the axis of rotation being disposed at the elbow separating two straight portions of said pallet, one of said portions being arranged so that it closes the magnetic circuit of the cylinder head U and has an air gap with at least one of the branches of said cylinder head.
  • the elbow is particularly useful for allowing a length suitable for the thermal bimetallic strip to be maintained, a length which would have been difficult to accommodate when deployed in a modular housing.
  • the section which is not directly used in the magnetic circuit can be used for adjusting the bimetallic strip.
  • the return means associated with the movable pallet consist of a torsion spring, disposed in the elbow separating the two portions of rectilinear shape of said pallet, one end of which is fixed to the latter and the other end is secured to the casing of the electrical equipment.
  • the box (B) of the electrical apparatus is shown in transparency, devoid of its usual components with the exception of the magnetic sub-assembly.
  • This comprises a spiral coil (1), a portion of the fixed magnetic circuit composed of a core (2) and two parallel branches (3) of planar appearance, and of a movable pallet (4) bent, in this case a bimetallic strip.
  • the width of the magnetic yoke, which can be raised for example at the level of the parallel branches (3) is such that this magnetic sub-assembly can be inserted into half-module protection devices.
  • the pallet (4) is movable in rotation around an axis located in the bent part (see below).
  • the relative position of the pallet (4) / branches (3) of the fixed circuit is as shown in FIG. 2a: in this case, obviously very diagrammatically, the portion (4a) of the pallet (4) participating in the magnetic circuit is not moved, and a nominal air gap is present between one of the branches (3) and said portion (4a).
  • the second portion (4b) located on the other side of the elbow is of course also stationary.
  • a return spring (5) brings the movable pallet (4) in normal operating position without any overload or overcurrent.
  • An adjustment member (6) of the bimetallic strip (4) cooperates with said part (4b), in particular for the purpose of adjusting its sensitivity.
  • This member (6) is preferably a simple screw which presses on the end surface of the portion (4b), acting as an adjustable stop.
  • the arrow (7) symbolizes the trigger arm secured to the lock (not shown in this figure).
  • the mobile portion (4a) is at a distance from this arm (7), since the operation is normal.
  • FIG. 2b and 2c a triggering occurs by contact between the portion (4a) of the pallet (4) and said arm (7).
  • the case shown in Figure 2b is that of an overload: the bimetallic strip (4) heats up, and the pallet (4) moves by deformation of the portion (4a), which comes into contact with the member (7) and therefore causes disjunction.
  • the only elements of the invention which appear in FIG. 3 are the spiral coil (1) and the pallet (4) which in this case plays the role of bimetallic strip.
  • the electrical circuit of a circuit breaker taken as an example of a modular line protection device, develops between two terminals (8, 9) in which the external conductors of the line are fixed. These terminals (8, 9), and more generally the elements of said circuit which are not specific to the invention, are well known and are not the subject of a detailed description.
  • the terminal (9) is connected via a conductive braid (10) to the pallet / bimetallic strip (4) at its portion (4b) which corresponds substantially to one of the ends of the bimetallic strip (4).
  • the other end is connected, also via a conductive braid (11), to one of the ends of the coil (1).
  • the fixed contact (12), extended by an arc conduction sheet (14) is secured to the other end of the coil (1).
  • the configuration described illustrates a case in which the heating of the bimetallic strip (4) is direct.
  • the movable contact (13), integral with a trigger lock (not shown), is electrically connected by means of a flexible braid (15) to a conductive sheet (16) connected on the one hand to the second terminal (8 ) and on the other hand to a second arc conduction sheet (17).
  • the bimetallic strip (4) deforms, but the coil (1), also traversed by a current greater than that which crosses it in normal operation, increases the flux in the magnetic circuit, and creates a synergistic effect with said deformation to ensure the disjunction of the contacts (12, 13).
  • the bimetallic strip (4) does not have time to heat the flux in the magnetic circuit (see Figure 2c) makes it pivot around the axis (A) and produces the tilting of the movable contact ( 13).
  • FIG. 4 The same elements as in FIG. 3 appear in FIG. 4, with the fixed part of the magnetic circuit, that is to say the core (2) and the branches (3) between which the coil (1) is wound.
  • Plates (18, 19) of flat appearance extend downward and the sides of the branches (3), although being distinct from the latter. They have in particular the function of channeling the magnetic field for an additional function of guiding and blowing the electric arc created at the opening of the contacts, which is however not the object of the present invention.
  • these sheets (18, 19) make it possible to increase the speed of opening of the contacts (12, 13) by providing a magnetic effect identical to that which applies to the electric arc created. at the time of opening.
  • this circuit breaker comprises a handle (22) for manipulation connected in particular via a link (23) to a rotary lock (24) of which the movable contact (13) is integral.
  • This lock (24) which can be tilted using return means, comprises an arm (7) or a protuberance which, when it is touched by the pallet (4) during movement, causes it to tilt.
  • the half-shell (20) includes a first branch (3), the core (1) of the magnetic circuit, which we can clearly see here that it consists of a stack of sheets, as well as the fixed contact (12).
  • the deionization plates (27, 28) allow the extinction of the electric arc which is created at the opening of the contacts (12, 13).
  • An insulating middle wall (25) is then placed on these elements, making it possible in particular to isolate the coil from the magnetic core (1) and from the first branch (3).
  • a second insulation element (26) is arranged between the coil (1) and the second branch (3) of the fixed magnetic circuit.
  • the second half-shell (21) is then closed, and the product is thus mounted.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Electromagnets (AREA)
  • Soft Magnetic Materials (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

The magnetic sub assembly has an inductive coil mounted in a magnetic housing and having a switching mechanism lock. There is a spiral coil (1) with a magnetic housing and two sections extending radially at the coil edge. There is a platform section (3) unlocking the locking mechanism and controlled by a spring return when there is no over current.

Description

La présente invention a trait à un sous-ensemble magnétique pour appareillage électrique modulaire du type disjoncteur, permettant la coupure de la ligne en cas de surintensité brutale, ainsi que les appareillages qui en sont munis.The present invention relates to a magnetic sub-assembly for modular electrical equipment of the circuit breaker type, enabling the line to be cut in the event of a sudden overcurrent, as well as the equipment fitted therewith.

Actuellement, les disjoncteurs de protection de ligne comportent généralement, dans un boîtier modulaire à coques en plastique, un circuit s'étendant entre deux bornes et comprenant un bilame de déclenchement thermique pour la protection de la ligne contre les surcharges, un contact fixe et un contact mobile et, entre une borne et un contact fixe, un dispositif électromagnétique de disjonction ou déclencheur magnétique.Currently, line protection circuit breakers generally include, in a modular housing with plastic shells, a circuit extending between two terminals and comprising a thermal trip bimetal for protecting the line against overloads, a fixed contact and a movable contact and, between a terminal and a fixed contact, an electromagnetic circuit breaker or magnetic trip device.

Ce dernier comprend essentiellement une bobine avec un noyau mobile associé à un percuteur pour assurer, en cas de surintensité, la disjonction par séparation du contact mobile et du contact fixe au moyen d'une serrure mécanique à laquelle est solidarisé le contact mobile, et qui peut basculer sous l'action du percuteur.The latter essentially comprises a coil with a movable core associated with a striker to ensure, in the event of an overcurrent, the separation by separation of the movable contact and the fixed contact by means of a mechanical lock to which the movable contact is secured, and which may tip over under the action of the striker.

Dans la plupart des cas, le déclencheur comprend plus précisément une bobine à induction, montée longitudinalement dans une culasse magnétique, et entourant ledit noyau mobile associé au percuteur ainsi qu'un noyau fixe, un ressort de rappel disposé entre les noyaux venant en outre compléter le montage. Ce ressort permet notamment de rappeler le noyau mobile en position de repos, percuteur en position inactive, c'est-à-dire à distance de la serrure mécanique réalisant l'ouverture des contacts par basculement du contact mobile.In most cases, the trigger more precisely comprises an induction coil, mounted longitudinally in a magnetic yoke, and surrounding said movable core associated with the striker, as well as a fixed core, a return spring disposed between the cores further complementing mounting. This spring allows in particular to recall the movable core in the rest position, striker in position inactive, i.e. at a distance from the mechanical lock opening the contacts by tilting the movable contact.

La culasse est constituée d'une tôle en matériau magnétique entourant la bobine pour canaliser correctement les lignes de champs produites lorsque la bobine est parcourue par un courant. De part et d'autre de ladite bobine, selon une direction axiale, la culasse comporte classiquement des flancs en regard l'un de l'autre, dont l'un est muni du noyau fixe, et au niveau desquels sont disposés des éléments en général fixés au sous-ensemble magnétique, c'est-à-dire une des bornes de connexion du disjoncteur et le contact fixe.The cylinder head consists of a sheet of magnetic material surrounding the coil to properly channel the field lines produced when the coil is traversed by a current. On either side of said coil, in an axial direction, the yoke conventionally comprises flanks facing one another, one of which is provided with the fixed core, and at the level of which are arranged elements general fixed to the magnetic sub-assembly, that is to say one of the connection terminals of the circuit breaker and the fixed contact.

Dans les configurations classiques ainsi décrites, la bobine prend généralement la forme d'un solénoïde de volume par conséquent sensiblement cylindrique, dont les dimensions axiales et transversales varient selon les calibres, voire d'un exemplaire à l'autre pour un même calibre, une dispersion dimensionnelle ne pouvant être exclue dans la fabrication des bobines. Pour un calibre donné, il est cependant nécessaire de maintenir une section de cuivre et une section polaire données.In the conventional configurations thus described, the coil generally takes the form of a solenoid of volume that is therefore substantially cylindrical, the axial and transverse dimensions of which vary according to the sizes, or even from one copy to another for the same size, a dimensional dispersion which cannot be excluded in the manufacture of the coils. For a given size, it is however necessary to maintain a given copper section and a polar section.

Les solénoïdes occupent de fait la quasi-totalité de la largeur d'un appareil modulaire simple, c'est-à-dire qu'elles s'étendent transversalement pratiquement d'une coque à l'autre du boîtier.The solenoids in fact occupy almost the entire width of a simple modular device, that is to say that they extend practically transversely from one shell to the other of the housing.

Dans la recherche constante d'une optimisation de l'intégration des composants dans les appareils modulaires de protection des lignes, les bobines ont toujours représenté un élément occupant un espace important relativement en volume interne, et considéré comme difficile à réduire.In the constant search for an optimization of the integration of the components in the modular line protection devices, the coils have always represented an element occupying a significant space relatively in internal volume, and considered as difficult to reduce.

Lorsque le boîtier de l'appareillage occupe un volume réduit correspondant à ce qu'il est convenu d'appeler un demi-module ayant une largeur de 8,9 mm, les configurations usuelles précitées des déclencheurs magnétiques à solénoïde ne peuvent pas être utilisées, car la largeur des boîtiers demi-modules est réduite de moitié.When the switchgear housing occupies a reduced volume corresponding to what is known as a half-module having a width of 8.9 mm, the usual abovementioned configurations of magnetic solenoid trip units cannot be used, because the width of the half-module boxes is reduced by half.

L'un des objectifs principaux de la présente invention est de proposer une configuration particulière pouvant s'adapter auxdits demi-modules.One of the main objectives of the present invention is to propose a particular configuration which can be adapted to said half-modules.

Selon un autre objectif, l'invention présente une structure dotée d'un circuit magnétique comportant une portion fixe et une portion mobile, dont l'agencement relatif permet d'augmenter sensiblement la force utile de l'élément provoquant le déclenchement.According to another objective, the invention presents a structure provided with a magnetic circuit comprising a fixed portion and a movable portion, whose relative arrangement makes it possible to significantly increase the useful force of the element causing tripping.

Un autre objectif encore de l'invention peut être vu dans une possibilité optionnelle d'optimisation obtenue en regroupant les deux fonctions de déclenchement magnétique suite à une surintensité et de déclenchement thermique dû à une surcharge.Yet another objective of the invention can be seen in an optional optimization possibility obtained by combining the two magnetic trip functions following an overcurrent and thermal trip due to an overload.

Pour remplir ces objectifs, le sous-ensemble magnétique de l'invention, composé classiquement d'une bobine d'induction montée dans une culasse magnétique munie d'un dispositif de déclenchement de la serrure en vue de séparer le contact mobile du contact fixe, est caractérisé en ce qu'il présente une configuration plane avec une bobine en spirale à au moins une couche d'enroulement coopérant avec une culasse magnétique en U comportant un noyau se développant selon l'axe de la bobine et deux branches s'étendent radialement vers la périphérie de ladite bobine, le bord libre d'au moins une des branches étant séparé d'une palette fermant le circuit magnétique par un entrefer, ladite palette étant mobile par rapport aux branches, apte à actionner ladite serrure pour la faire déclencher en cas de surintensité et contrôlée par des moyens de rappel la ramenant à distance de ladite serrure en l'absence de surintensité.To fulfill these objectives, the magnetic sub-assembly of the invention, conventionally composed of an induction coil mounted in a magnetic yoke fitted with a device for triggering the lock in order to separate the movable contact from the fixed contact, is characterized in that it has a flat configuration with a spiral coil with at least one winding layer cooperating with a U-shaped magnetic yoke comprising a core developing along the axis of the coil and two branches extending radially towards the periphery of said coil, the free edge of at least one of the branches being separated from a pallet closing the magnetic circuit by an air gap, said pallet being movable relative to the branches, capable of actuating said lock in order to trigger it by overcurrent and controlled by return means bringing it away from said lock in the absence of overcurrent.

La configuration proposée implique non seulement une particularité structurelle de la bobine, mais encore une géométrie du circuit magnétique matérialisé par la culasse adaptée à cette structure. Il est à noter que c'est la portion mobile dudit circuit qui est prévue pour coopérer directement avec la serrure, sans pièce intermédiaire, ce qui simplifie considérablement la structure d'une part, et le montage d'autre part.The proposed configuration involves not only a structural feature of the coil, but also a geometry of the magnetic circuit materialized by the yoke adapted to this structure. It should be noted that it is the movable portion of said circuit which is designed to cooperate directly with the lock, without an intermediate part, which considerably simplifies the structure on the one hand, and the mounting on the other hand.

Selon une configuration possible, le noyau de la culasse magnétique peut être constitué de tôles empilées en vue de limiter les courants de Foucault, les branches étant d'allure plane. Pour simplifier la fabrication, une variante à noyau massif peut cependant être mise en oeuvre.According to a possible configuration, the core of the magnetic yoke can be made of sheets stacked in order to limit the eddy currents, the branches being of planar appearance. To simplify manufacture, a variant with a solid core can however be used.

Les branches sont en fait fixées aux deux extrémités du noyau, d'où la configuration en U qui ne conceme en réalité que la portion fixe du circuit magnétique.The branches are in fact fixed at the two ends of the core, hence the U-shaped configuration which in reality only relates to the fixed portion of the magnetic circuit.

Pour certains calibres, la palette mobile est un bilame se déformant sous l'effet d'une surcharge de courant, les extrémités de ladite palette étant électriquement reliées d'une part à une des bornes de l'appareillage électrique et d'autre part à la bobine en spirale.For certain sizes, the movable pallet is a bimetallic strip deformed under the effect of a current overload, the ends of said pallet being electrically connected on the one hand to one of the terminals of the electrical equipment and on the other hand to the spiral coil.

Dans ce cas, il convient d'utiliser pour la palette un matériau aux propriétés adaptées aux deux aspects du fonctionnement, car elle est alors employée d'une part en tant que partie d'un circuit magnétique, et d'autre part en tant que lame déformable sous l'effet d'une augmentation de température.In this case, it is advisable to use for the pallet a material with properties adapted to the two aspects of the operation, because it is then used on the one hand as part of a magnetic circuit, and on the other hand as blade deformable under the effect of an increase in temperature.

Selon une variante, notamment adaptée à d'autres calibres, la palette mobile est un bilame se déformant sous l'effet de la chaleur produite par la bobine, ledit bilame n'étant alors pas relié au circuit électrique de l'appareillage.According to a variant, in particular adapted to other sizes, the movable pallet is a bimetallic strip deforming under the effect of the heat produced by the coil, said bimetallic strip then not being connected to the electrical circuit of the apparatus.

Il est dans ce cas possible de faire appel à une palette distincte du bilame, fixée à sa portion rectiligne et située de manière à pouvoir coopérer avec le circuit magnétique fixe, ladite palette pouvant améliorer les performances magnétiques du bilame s'il y a lieu.In this case, it is possible to use a pallet distinct from the bimetallic strip, fixed to its rectilinear portion and situated so as to be able to cooperate with the fixed magnetic circuit, said pallet being able to improve the magnetic performance of the bimetallic strip if necessary.

Pour qu'une coopération mécanique, sous forme de l'exercice d'une force, puisse exister entre la palette et la serrure de déclenchement, au moins une portion de la palette est positionnée à proximité d'un bras de déclenchement de la serrure, lequel est actionné par ladite portion lorsque la palette se rapproche d'au moins une des branches de la culasse magnétique sous l'effet de l'augmentation du flux dans le circuit magnétique.So that mechanical cooperation, in the form of the exercise of a force, can exist between the pallet and the release lock, at least a portion of the pallet is positioned near a release arm of the lock, which is actuated by said portion when the pallet approaches at least one of the branches of the magnetic yoke under the effect of the increase in flux in the magnetic circuit.

Ladite serrure est donc disposée, relativement à la palette, de telle sorte qu'il puisse y avoir un contact lorsque cette dernière se déplace, c'est-à-dire en fait de manière qu'une partie du bras croise la trajectoire de déplacement de la palette.Said lock is therefore arranged, relative to the pallet, so that there can be contact when the latter moves, that is to say in fact so that part of the arm crosses the movement path from the palette.

De préférence, et notamment pour respecter la configuration plane précitée, la palette présente en réalité une forme de lame de largeur sensiblement égale à la distance séparant les deux branches de la culasse. De préférence encore, au moins une portion du bras de déclenchement de la serrure est disposée entre lesdites branches.Preferably, and in particular in order to comply with the above-mentioned flat configuration, the pallet actually has a shape of blade of width substantially equal to the distance separating the two branches of the cylinder head. More preferably, at least a portion of the trigger arm of the lock is disposed between said branches.

La zone d'action se situe alors à l'extrémité libre de la palette, ce qui n'implique aucune modification/ajout dans le sens de la largeur.The action zone is then located at the free end of the palette, which does not imply any modification / addition across the width.

Selon une structure avantageuse, la palette est mobile en rotation autour d'un axe parallèle à l'axe de la bobine en spirale, ledit axe étant situé au voisinage de l'extrémité d'au moins une des branches, à l'extérieur de la culasse magnétique en U.According to an advantageous structure, the pallet is movable in rotation about an axis parallel to the axis of the spiral coil, said axis being located near the end of at least one of the branches, outside the U-shaped magnetic yoke.

En d'autres termes, la portion mobile du circuit magnétique perméable est animée d'un mouvement de rotation, qui s'avère particulièrement approprié puisque, selon la position de l'axe de rotation et la géométrie de la palette, on peut envisager de réduire l'entrefer moyen tout en conservant une course utile égale pour ladite palette ou tout au moins sa portion active : compte tenu des spécificités traditionnelles d'un circuit magnétique, la force utile s'y trouvera alors sensiblement augmentée.In other words, the mobile portion of the permeable magnetic circuit is driven by a rotational movement, which is particularly suitable since, depending on the position of the axis of rotation and the geometry of the pallet, it is possible to envisage reduce the average air gap while maintaining an equal useful stroke for said pallet or at least its active portion: taking into account the traditional specificities of a magnetic circuit, the useful force will then be appreciably increased there.

Selon une possibilité, la palette mobile est coudée, l'axe de rotation étant disposé au niveau du coude séparant deux portions rectilignes de ladite palette, l'une desdites portions étant disposée de telle sorte qu'elle ferme le circuit magnétique de la culasse en U et présente un entrefer avec au moins l'une des branches de ladite culasse.According to one possibility, the movable pallet is bent, the axis of rotation being disposed at the elbow separating two straight portions of said pallet, one of said portions being arranged so that it closes the magnetic circuit of the cylinder head U and has an air gap with at least one of the branches of said cylinder head.

Dans ce cas, le coude est notamment utile pour permettre de conserver une longueur appropriée au bilame thermique, longueur qu'il aurait été difficile de loger déployée dans un boîtier modulaire. De plus, comme on le verra plus en détail dans la suite, le tronçon qui n'est pas directement utilisé dans le circuit magnétique peut l'être pour le réglage du bilame.In this case, the elbow is particularly useful for allowing a length suitable for the thermal bimetallic strip to be maintained, a length which would have been difficult to accommodate when deployed in a modular housing. In addition, as will be seen in more detail below, the section which is not directly used in the magnetic circuit can be used for adjusting the bimetallic strip.

De préférence, les moyens de rappel associés à la palette mobile consistent en un ressort de torsion, disposé dans le coude séparant les deux portions d'allure rectiligne de ladite palette, dont l'une des extrémités est fixée à cette dernière et l'autre extrémité est solidaire du boîtier de l'appareillage électrique.Preferably, the return means associated with the movable pallet consist of a torsion spring, disposed in the elbow separating the two portions of rectilinear shape of said pallet, one end of which is fixed to the latter and the other end is secured to the casing of the electrical equipment.

Ces moyens visent à conférer une position de repos stable à la palette lorsqu'elle n'est pas déplacée sous l'effet d'une surcharge ou d'un court-circuit. Il est à noter que lorsque la palette se déplace par déformation du bilame, l'entrefer du circuit magnétique diminue et il peut y avoir un effet synergétique en fin de course, améliorant les performances du système de l'invention.These means are intended to give the pallet a stable rest position when it is not moved under the effect of an overload or a short circuit. It should be noted that when the pallet moves by deformation of the bimetallic strip, the air gap of the magnetic circuit decreases and there can be a synergistic effect at the end of the race, improving the performance of the system of the invention.

Le couplage de fait des fonctions magnétique et thermique, et l'existence d'une configuration rotative favorable notamment parce qu'elle joue sur la taille de l'entrefer, contribuent notablement à l'efficacité du sous-ensemble de l'invention.The de facto coupling of the magnetic and thermal functions, and the existence of a favorable rotary configuration in particular because it affects the size of the air gap, contribute significantly to the efficiency of the sub-assembly of the invention.

Celle-ci s'applique également aux appareillages électriques de type disjoncteurs, mais dimensionnés en demi-modules, et qui sont équipés de sous-ensembles magnétiques tels que décrits auparavant.This also applies to electrical devices of the circuit breaker type, but sized in half-modules, and which are fitted with magnetic sub-assemblies as described above.

L'invention va à présent être décrite plus en détail, notamment en référence aux figures disposées en annexe, pour lesquelles :

  • la figure 1 est une vue en perspective d'un sous-ensemble magnétique selon l'invention disposé dans un appareillage électrique de protection de lignes demi-module ;
  • les figures 2a à 2c sont des schémas fonctionnels montrant la position relative des portions fixe et mobile du circuit magnétique en cas de surcharge et en cas de court-circuit ;
  • la figure 3 représente une vue perspective du circuit électrique auquel s'applique l'invention :
  • la figure 4 est une vue en perspective des dispositions relatives du circuit électrique et du circuit magnétique ; et
  • la figure 5 est une vue en perspective éclatée de la totalité de l'appareillage demi-module de l'invention.
The invention will now be described in more detail, in particular with reference to the figures arranged in the appendix, for which:
  • Figure 1 is a perspective view of a magnetic sub-assembly according to the invention disposed in an electrical apparatus for protecting half-module lines;
  • FIGS. 2a to 2c are functional diagrams showing the relative position of the fixed and mobile portions of the magnetic circuit in the event of overload and in the event of a short circuit;
  • FIG. 3 represents a perspective view of the electrical circuit to which the invention applies:
  • Figure 4 is a perspective view of the relative arrangements of the electrical circuit and the magnetic circuit; and
  • Figure 5 is an exploded perspective view of the entire half-module apparatus of the invention.

En référence à la figure 1, le boîtier (B) de l'appareillage électrique est figuré en transparence, dépourvu de ses composants usuels à l'exception du sous-ensemble magnétique. Celui-ci comporte une bobine en spirale (1), une portion de circuit magnétique fixe composée d'un noyau (2) et de deux branches parallèles (3) d'allure plane, et d'une palette mobile (4) coudée, en l'occurrence un bilame.With reference to FIG. 1, the box (B) of the electrical apparatus is shown in transparency, devoid of its usual components with the exception of the magnetic sub-assembly. This comprises a spiral coil (1), a portion of the fixed magnetic circuit composed of a core (2) and two parallel branches (3) of planar appearance, and of a movable pallet (4) bent, in this case a bimetallic strip.

La largeur de la culasse magnétique, que l'on peut relever par exemple au niveau des branches parallèles (3) est telle que ce sous-ensemble magnétique est insérable dans des dispositifs de protection demi-modules.The width of the magnetic yoke, which can be raised for example at the level of the parallel branches (3) is such that this magnetic sub-assembly can be inserted into half-module protection devices.

La palette (4) est mobile en rotation autour d'un axe situé dans la partie coudée (voir ci-après). En fonctionnement normal, la position relative palette (4)/ branches (3) du circuit fixe est telle que représentée en figure 2a : dans ce cas, évidemment très schématisé, la portion (4a) de la palette (4) participant au circuit magnétique n'est pas déplacée, et un entrefer nominal est présent entre l'une des branches (3) et ladite portion (4a).The pallet (4) is movable in rotation around an axis located in the bent part (see below). In normal operation, the relative position of the pallet (4) / branches (3) of the fixed circuit is as shown in FIG. 2a: in this case, obviously very diagrammatically, the portion (4a) of the pallet (4) participating in the magnetic circuit is not moved, and a nominal air gap is present between one of the branches (3) and said portion (4a).

La seconde portion (4b) située de l'autre côté du coude est bien entendu également immobile. Un ressort de rappel (5) ramène la palette mobile (4) en position de fonctionnement normal en dehors de toute surcharge ou surintensité. Un organe de réglage (6) du bilame (4) coopère avec ladite partie (4b), notamment aux fins de régler sa sensibilité. Cet organe (6) est de préférence une simple vis qui appuie sur la surface d'extrémité de la portion (4b), faisant office de butée réglable.The second portion (4b) located on the other side of the elbow is of course also stationary. A return spring (5) brings the movable pallet (4) in normal operating position without any overload or overcurrent. An adjustment member (6) of the bimetallic strip (4) cooperates with said part (4b), in particular for the purpose of adjusting its sensitivity. This member (6) is preferably a simple screw which presses on the end surface of the portion (4b), acting as an adjustable stop.

La flèche (7) symbolise le bras de déclenchement solidaire de la serrure (non représenté dans cette figure). En figure 2a, la portion (4a) mobile est à distance de ce bras (7), puisque le fonctionnement est normal.The arrow (7) symbolizes the trigger arm secured to the lock (not shown in this figure). In FIG. 2a, the mobile portion (4a) is at a distance from this arm (7), since the operation is normal.

En revanche, en figure 2b et 2c, un déclenchement se produit par contact entre la portion (4a) de la palette (4) et ledit bras (7). La cas représenté en figure 2b est celui d'une surcharge: le bilame (4) s'échauffe, et la palette (4) se déplace par déformation de la portion (4a), qui vient au contact de l'organe (7) et provoque par conséquent la disjonction.On the other hand, in FIG. 2b and 2c, a triggering occurs by contact between the portion (4a) of the pallet (4) and said arm (7). The case shown in Figure 2b is that of an overload: the bimetallic strip (4) heats up, and the pallet (4) moves by deformation of the portion (4a), which comes into contact with the member (7) and therefore causes disjunction.

En figure 2c, l'augmentation du flux dans le circuit magnétique sous l'effet d'un court-circuit provoque la rotation de la palette (4), et donc des portions (4a, 4b) autour de l'axe (A). Cela provoqua le même effet : la serrure bascule et le contact électrique est ouvert.In FIG. 2c, the increase in flux in the magnetic circuit under the effect of a short circuit causes the rotation of the pallet (4), and therefore of the portions (4a, 4b) around the axis (A) . This had the same effect: the lock swings and the electrical contact is open.

Les seuls éléments de l'invention qui apparaissent en figure 3 sont la bobine (1) spiralée et la palette (4) qui joue en l'occurrence le rôle de bilame. Le circuit électrique d'un disjoncteur, pris comme exemple de dispositif modulaire de protection de ligne, se développe entre deux bornes (8, 9) dans lesquelles sont fixés les conducteurs externes de la ligne. Ces bornes (8, 9), et plus généralement les éléments dudit circuit qui ne sont pas spécifiques à l'invention, sont bien connus et ne font pas l'objet d'une description détaillée.The only elements of the invention which appear in FIG. 3 are the spiral coil (1) and the pallet (4) which in this case plays the role of bimetallic strip. The electrical circuit of a circuit breaker, taken as an example of a modular line protection device, develops between two terminals (8, 9) in which the external conductors of the line are fixed. These terminals (8, 9), and more generally the elements of said circuit which are not specific to the invention, are well known and are not the subject of a detailed description.

La borne (9) est reliée via une tresse conductrice (10) à la palette/bilame (4) au niveau de sa portion (4b) qui correspond sensiblement à l'une des extrémités du bilame (4). L'autre extrémité est connectée, également via une tresse conductrice (11), à l'une des extrémités de la bobine (1). Le contact fixe (12), prolongé par une tôle de conduction d'arc (14) est solidarisé à l'autre extrémité de la bobine (1). La configuration décrite illustre un cas dans lequel le chauffage du bilame (4) est direct.The terminal (9) is connected via a conductive braid (10) to the pallet / bimetallic strip (4) at its portion (4b) which corresponds substantially to one of the ends of the bimetallic strip (4). The other end is connected, also via a conductive braid (11), to one of the ends of the coil (1). The fixed contact (12), extended by an arc conduction sheet (14) is secured to the other end of the coil (1). The configuration described illustrates a case in which the heating of the bimetallic strip (4) is direct.

Le contact mobile (13), solidaire d'une serrure de déclenchement (non représentée), est relié électriquement au moyen d'une tresse souple (15) à une tôle conductrice (16) connectée d'une part à la seconde borne (8) et d'autre part à une seconde tôle de conduction d'arc (17).The movable contact (13), integral with a trigger lock (not shown), is electrically connected by means of a flexible braid (15) to a conductive sheet (16) connected on the one hand to the second terminal (8 ) and on the other hand to a second arc conduction sheet (17).

En cas de surcharge, le bilame (4) se déforme, mais la bobine (1), également parcourue par un courant supérieur à celui qui la traverse en fonctionnement normal, augmente le flux dans le circuit magnétique, et crée un effet synergérique avec ladite déformation pour assurer la disjonction des contacts (12, 13).In the event of overload, the bimetallic strip (4) deforms, but the coil (1), also traversed by a current greater than that which crosses it in normal operation, increases the flux in the magnetic circuit, and creates a synergistic effect with said deformation to ensure the disjunction of the contacts (12, 13).

En cas de court-circuit, le bilame (4) n'a pas le temps de chauffer le flux dans le circuit magnétique (voir figure 2c) le fait pivoter autour de l'axe (A) et produit le basculement du contact mobile (13).In the event of a short circuit, the bimetallic strip (4) does not have time to heat the flux in the magnetic circuit (see Figure 2c) makes it pivot around the axis (A) and produces the tilting of the movable contact ( 13).

Les mêmes éléments qu'en figure 3 apparaissent en figure 4, avec la partie fixe du circuit magnétique, c'est-à-dire le noyau (2) et les branches (3) entre lesquelles est enroulée la bobine (1).The same elements as in FIG. 3 appear in FIG. 4, with the fixed part of the magnetic circuit, that is to say the core (2) and the branches (3) between which the coil (1) is wound.

Des tôles (18, 19) d'allure plane prolongent vers le bas et les côtés les branches (3), bien qu'étant distinctes de ces dernières. Elles ont notamment pour fonction de canaliser le champ magnétique pour une fonction annexe de guidage et de soufflage de l'arc électrique créé à l'ouverture des contacts, qui n'est cependant pas l'objet de la présente invention. De plus, dans la zone de contact, ces tôles (18, 19) permettent d'augmenter la vitesse d'ouverture des contacts (12, 13) en procurant un effet magnétique identique à celui qui s'applique à l'arc électrique créé au moment de l'ouverture.Plates (18, 19) of flat appearance extend downward and the sides of the branches (3), although being distinct from the latter. They have in particular the function of channeling the magnetic field for an additional function of guiding and blowing the electric arc created at the opening of the contacts, which is however not the object of the present invention. In addition, in the contact zone, these sheets (18, 19) make it possible to increase the speed of opening of the contacts (12, 13) by providing a magnetic effect identical to that which applies to the electric arc created. at the time of opening.

Cet effet magnétique s'applique au contact mobile, qui est en quelque sorte « soufflé » de la même manière que l'arc, par répulsion magnétique. Les tôles (18, 19) remontent d'ailleurs jusqu'à l'axe de rotation, de sorte que les contacts (12, 13), et notamment le contact mobile (13) sont en totalité dans le champ magnétique.This magnetic effect is applied to the moving contact, which is somehow "blown" in the same way as the arc, by magnetic repulsion. The sheets (18, 19) also go up to the axis of rotation, so that the contacts (12, 13), and in particular the movable contact (13) are entirely in the magnetic field.

En référence à la figure 5, la totalité des composants du disjoncteur est représentée, la plupart d'entre eux étant logé dans l'une des demi-coques (20) formant le boîtier (B), l'autre demi-coque (21) étant ici envisagée comme un couvercle de fermeture dudit boîtier (13). Les tôles (18, 19) précitées apparaissent d'ailleurs au niveau desdites demi-coques (20, 21).With reference to FIG. 5, all of the components of the circuit breaker are shown, most of them being housed in one of the half-shells (20) forming the housing (B), the other half-shell (21 ) being here considered as a cover for closing said housing (13). The aforementioned sheets (18, 19) also appear at the level of said half-shells (20, 21).

Ainsi, de manière très classique, ce disjoncteur comporte une manette (22) de manipulation reliée notamment via une biellette (23) à une serrure rotative (24) de laquelle le contact mobile (13) est solidaire. Cette serrure (24), qui peut basculer à l'aide de moyens de rappel, comporte un bras (7) ou une protubérance qui, lorsqu'il est touché par la palette (4) en cours de déplacement, la fait basculer.Thus, in a very conventional manner, this circuit breaker comprises a handle (22) for manipulation connected in particular via a link (23) to a rotary lock (24) of which the movable contact (13) is integral. This lock (24), which can be tilted using return means, comprises an arm (7) or a protuberance which, when it is touched by the pallet (4) during movement, causes it to tilt.

La demi-coque (20) inclut une première branche (3), le noyau (1) du circuit magnétique, dont on voit bien ici qu'il est constitué d'un empilement de tôles, ainsi que le contact fixe (12). En partie inférieure, les tôles de déionisation (27, 28) permettent l'extinction de l'arc électrique qui se crée à l'ouverture des contacts (12, 13).The half-shell (20) includes a first branch (3), the core (1) of the magnetic circuit, which we can clearly see here that it consists of a stack of sheets, as well as the fixed contact (12). In the lower part, the deionization plates (27, 28) allow the extinction of the electric arc which is created at the opening of the contacts (12, 13).

Une paroi médiane (25) isolante est placée ensuite sur ces éléments, permettant notamment d'isoler la bobine du noyau magnétique (1) et de la première branche (3).An insulating middle wall (25) is then placed on these elements, making it possible in particular to isolate the coil from the magnetic core (1) and from the first branch (3).

Un second élément d'isolation (26) est disposé entre la bobine (1) et la seconde branche (3), du circuit magnétique fixe. La seconde demi-coque (21) est ensuite refermée, et le produit est ainsi monté.A second insulation element (26) is arranged between the coil (1) and the second branch (3) of the fixed magnetic circuit. The second half-shell (21) is then closed, and the product is thus mounted.

La description de l'invention faite ci-dessus a valeur d'exemple, et ne peut être considérée comme limitative de ladite invention. Celle-ci englobe au contraire toutes les variantes de forme, configuration etc... qui sont à la portée de l'homme de l'art.The description of the invention made above has the value of an example, and cannot be considered as limiting the said invention. On the contrary, it includes all the variants of shape, configuration, etc. which are within the reach of those skilled in the art.

Claims (11)

Sous-ensemble magnétique pour appareillage électrique modulaire de type disjoncteur comportant un contact fixe et un contact mobile solidaire d'une serrure de déclenchement, ledit sous-ensemble étant composé d'une bobine d'induction montée dans une culasse magnétique munie d'un dispositif de déclenchement de la serrure en vue de séparer le contact mobile du contact fixe en cas de surintensité, caractérisé en ce qu'il présente une configuration plane avec une bobine en spirale à au moins une couche d'enroulement coopérant avec une culasse magnétique en U comportant un noyau se développant selon l'axe de la bobine et deux branches s'étendent radialement vers la périphérie de ladite bobine, le bord libre d'au moins une des branches étant séparé d'une palette fermant le circuit magnétique par un entrefer, ladite palette étant mobile par rapport aux branches, apte à actionner ladite serrure pour la faire déclencher en cas de surintensité, et contrôlée par des moyens de rappel la ramenant à distance de ladite serrure en l'absence de surintensité.Magnetic sub-assembly for modular electrical equipment of the circuit breaker type comprising a fixed contact and a movable contact secured to a trip lock, said sub-assembly consisting of an induction coil mounted in a magnetic yoke fitted with a device for triggering the lock in order to separate the movable contact from the fixed contact in the event of overcurrent, characterized in that it has a flat configuration with a spiral coil with at least one winding layer cooperating with a magnetic U-shaped yoke comprising a core developing along the axis of the coil and two branches extend radially towards the periphery of said coil, the free edge of at least one of the branches being separated from a pallet closing the magnetic circuit by a gap, said pallet being movable relative to the branches, capable of actuating said lock to trigger it in the event of an overcurrent, and controlled by return means bringing it away from said lock in the absence of overcurrent. Sous-ensemble magnétique pour appareillage électrique modulaire selon la revendication précédente, caractérisé en ce que ledit noyau de la culasse magnétique est constitué de tôles empilées, les branches étant d'allure plane.Magnetic sub-assembly for modular electrical equipment according to the preceding claim, characterized in that said core of the magnetic yoke consists of stacked sheets, the branches being of planar appearance. Sous-ensemble magnétique pour appareillage électrique modulaire selon la revendication 1, caractérisé en ce que le noyau de la culasse magnétique est massif.Magnetic subassembly for modular electrical equipment according to claim 1, characterized in that the core of the magnetic yoke is solid. Sous-ensemble magnétique pour appareillage électrique modulaire selon l'une quelconque des revendications précédentes, caractérisé en ce que la palette mobile est un bilame se déformant sous l'effet d'une surcharge de courant, les extrémités dudit bilame étant électriquement reliées d'une part à une des bobines de l'appareillage électrique et d'autre part à la bobine en spirale.Magnetic sub-assembly for modular electrical equipment according to any one of the preceding claims, characterized in that the movable pallet is a bimetallic strip which is deformed under the effect of a current overload, the ends of said bimetallic strip being electrically connected by a part to one of the coils of the electrical equipment and secondly to the spiral coil. Sous-ensemble magnétique pour appareillage électrique modulaire selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la palette mobile est un bilame se déformant sous l'effet de la chaleur produite par la bobine, ledit bilame n'étant pas relié au circuit électrique de l' appareillage.Magnetic sub-assembly for modular electrical equipment according to any one of Claims 1 to 3, characterized in that the movable pallet is a bimetallic strip which is deformed under the effect of the heat produced by the coil, said bimetallic strip not being connected to the electrical circuit of the switchgear. Sous-ensemble magnétique pour appareillage électrique modulaire selon l'une quelconque des revendications précédentes, caractérisé en ce que une portion de la palette mobile est positionnée à proximité d'un bras de déclenchement de la serrure, lequel est actionné par ladite portion lorsque la palette se rapproche d'au moins une des branches de la culasse magnétique, sous l'effet de l'augmentation du flux dans le circuit magnétique.Magnetic sub-assembly for modular electrical equipment according to any one of the preceding claims, characterized in that a portion of the movable pallet is positioned near an arm of triggering of the lock, which is actuated by said portion when the pallet approaches at least one of the branches of the magnetic yoke, under the effect of the increase in flux in the magnetic circuit. Sous-ensemble magnétique pour appareillage électrique modulaire selon la revendication précédente, caractérisé en ce qu'au moins une portion du bras de déclenchement de la serrure est disposée entre les deux branches de la culasse magnétique.Magnetic sub-assembly for modular electrical apparatus according to the preceding claim, characterized in that at least a portion of the arm for triggering the lock is disposed between the two branches of the magnetic yoke. Sous-ensemble magnétique pour appareillage électrique modulaire selon l'une quelconque des revendications précédentes, caractérisé en ce que la palette est mobile en rotation autour d'un axe parallèle à l'axe de la bobine en spirale, ledit axe étant situé au voisinage de l'extrémité de l'une des branches à l'extérieur de la culasse magnétique en U.Magnetic sub-assembly for modular electrical equipment according to any one of the preceding claims, characterized in that the pallet is movable in rotation about an axis parallel to the axis of the spiral coil, said axis being located in the vicinity of the end of one of the branches on the outside of the U-shaped magnetic yoke. Sous-ensemble magnétique pour appareillage électrique modulaire selon la revendication précédente, caractérisé en ce que la palette mobile est coudée, l'axe de rotation étant disposé au niveau du coude séparant deux portions rectilignes de ladite palette, l'une desdites portions étant disposée de telle sorte qu'elle ferme le circuit magnétique fermé de la culasse en U et présente un entrefer avec au moins l'une des branches de ladite culasse, l'autre portion permettant un réglage du bilame.Magnetic sub-assembly for modular electrical equipment according to the preceding claim, characterized in that the movable pallet is bent, the axis of rotation being disposed at the elbow separating two rectilinear portions of said pallet, one of said portions being disposed of such that it closes the closed magnetic circuit of the U-shaped yoke and has an air gap with at least one of the branches of said yoke, the other portion allowing adjustment of the bimetallic strip. Sous-ensemble magnétique pour appareillage électrique modulaire selon la revendication précédente, caractérisé en ce que les moyens de rappel associés à la palette mobile consistent en un ressort de torsion disposé dans le coude séparant les deux portions d'allure rectiligne de ladite palette, dont l'une des extrémités est fixée à cette dernière et l'autre extrémité est solidaire du boîtier de l'appareillage électrique.Magnetic sub-assembly for modular electrical equipment according to the preceding claim, characterized in that the return means associated with the movable pallet consist of a torsion spring arranged in the elbow separating the two portions of rectilinear shape of said pallet, of which l 'one end is fixed to the latter and the other end is secured to the housing of the electrical equipment. Appareillage électrique demi module du type disjoncteur comportant un sous-ensemble magnétique selon les revendications précédentes.Half-module electrical equipment of the circuit breaker type comprising a magnetic sub-assembly according to the preceding claims.
EP00440202A 2000-06-30 2000-06-30 Magnetic subassembly for a mocular electrical device with a limited width Expired - Lifetime EP1168402B9 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PT00440202T PT1168402E (en) 2000-06-30 2000-06-30 MAGNETIC SUBCONJUNTO FOR MODULAR ELECTRIC APPLIANCES OF REDUCED THICKNESS
AT00440202T ATE218749T1 (en) 2000-06-30 2000-06-30 MAGNETIC ASSEMBLY FOR AN ELECTRICAL DEVICE WITH A LIMITED WIDTH
EP00440202A EP1168402B9 (en) 2000-06-30 2000-06-30 Magnetic subassembly for a mocular electrical device with a limited width
DE60000200T DE60000200T2 (en) 2000-06-30 2000-06-30 Magnetic assembly for an electrical device with a limited width

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00440202A EP1168402B9 (en) 2000-06-30 2000-06-30 Magnetic subassembly for a mocular electrical device with a limited width

Publications (3)

Publication Number Publication Date
EP1168402A1 true EP1168402A1 (en) 2002-01-02
EP1168402B1 EP1168402B1 (en) 2002-06-05
EP1168402B9 EP1168402B9 (en) 2002-12-11

Family

ID=8174146

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00440202A Expired - Lifetime EP1168402B9 (en) 2000-06-30 2000-06-30 Magnetic subassembly for a mocular electrical device with a limited width

Country Status (4)

Country Link
EP (1) EP1168402B9 (en)
AT (1) ATE218749T1 (en)
DE (1) DE60000200T2 (en)
PT (1) PT1168402E (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10226555A1 (en) * 2002-06-14 2004-01-08 Geyer Ag Self-switching device, especially circuit breaker, with magnetic trigger has armature bent at approximately right angles, rotatably mounted near bend so it is divided into two arms by rotation axis
FR2883098A1 (en) * 2005-03-09 2006-09-15 Hager Electro Magnetic actuator for circuit breaker type modular electrical apparatus, has magnetic yoke with magnetic core moving respectively between attraction and remote positions towards and from yoke base in presence and absence of current in coil

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2994274B1 (en) * 2012-07-31 2015-09-04 Hager Electro Sas CURRENT MEASURING DEVICE CIRCULATING IN A DRIVER

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE457673C (en) * 1921-04-23 1928-05-23 Siemens Schuckertwerke Akt Ges Automatic high-current switch, the working parts of which are arranged between two parallel plates
GB369740A (en) * 1931-03-17 1932-03-31 John Westmoreland Record Improvements in or relating to electric circuit breakers or like circuit rupturing apparatus
FR785058A (en) * 1934-02-02 1935-08-01 Electric Auto Lite Co Improvements to automatic circuit breakers
DE6930682U (en) * 1969-07-31 1970-01-08 Eberle Werke Kg POWER RELAY
DE1538331A1 (en) * 1966-04-23 1970-04-30 Bbc Brown Boveri & Cie Installation circuit breaker with high switching capacity
GB2062966A (en) * 1979-11-10 1981-05-28 Terasaki Denki Sangyo Kk Circuit interrupter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE457673C (en) * 1921-04-23 1928-05-23 Siemens Schuckertwerke Akt Ges Automatic high-current switch, the working parts of which are arranged between two parallel plates
GB369740A (en) * 1931-03-17 1932-03-31 John Westmoreland Record Improvements in or relating to electric circuit breakers or like circuit rupturing apparatus
FR785058A (en) * 1934-02-02 1935-08-01 Electric Auto Lite Co Improvements to automatic circuit breakers
DE1538331A1 (en) * 1966-04-23 1970-04-30 Bbc Brown Boveri & Cie Installation circuit breaker with high switching capacity
DE6930682U (en) * 1969-07-31 1970-01-08 Eberle Werke Kg POWER RELAY
GB2062966A (en) * 1979-11-10 1981-05-28 Terasaki Denki Sangyo Kk Circuit interrupter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10226555A1 (en) * 2002-06-14 2004-01-08 Geyer Ag Self-switching device, especially circuit breaker, with magnetic trigger has armature bent at approximately right angles, rotatably mounted near bend so it is divided into two arms by rotation axis
DE10226555B4 (en) * 2002-06-14 2004-05-19 Geyer Ag Automatic switch with magnetic release
FR2883098A1 (en) * 2005-03-09 2006-09-15 Hager Electro Magnetic actuator for circuit breaker type modular electrical apparatus, has magnetic yoke with magnetic core moving respectively between attraction and remote positions towards and from yoke base in presence and absence of current in coil

Also Published As

Publication number Publication date
DE60000200T2 (en) 2003-02-13
DE60000200D1 (en) 2002-07-11
EP1168402B1 (en) 2002-06-05
EP1168402B9 (en) 2002-12-11
PT1168402E (en) 2002-10-31
ATE218749T1 (en) 2002-06-15

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