EP2750157B1 - Selective circuit-breaker arranged in a modular case - Google Patents

Selective circuit-breaker arranged in a modular case Download PDF

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Publication number
EP2750157B1
EP2750157B1 EP12306688.8A EP12306688A EP2750157B1 EP 2750157 B1 EP2750157 B1 EP 2750157B1 EP 12306688 A EP12306688 A EP 12306688A EP 2750157 B1 EP2750157 B1 EP 2750157B1
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EP
European Patent Office
Prior art keywords
main
subassembly
circuit breaker
circuit
shoulder
Prior art date
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EP12306688.8A
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German (de)
French (fr)
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EP2750157A1 (en
Inventor
Nikola Puh
Denis Speich
Marc Grandidier
Alain Schwartz
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Hager Electro SAS
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Hager Electro SAS
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Priority to EP12306688.8A priority Critical patent/EP2750157B1/en
Priority to CN201310757458.7A priority patent/CN103903917B/en
Publication of EP2750157A1 publication Critical patent/EP2750157A1/en
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Publication of EP2750157B1 publication Critical patent/EP2750157B1/en
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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
    • H01H71/1081—Modifications for selective or back-up protection; Correlation between feeder and branch circuit breaker

Definitions

  • the present invention applies to the field of electrical line protection apparatus, and more particularly relates to selective circuit breakers.
  • This type of apparatus is disposed upstream in the protection of an installation which also generally benefits from other line circuit breakers connected downstream of the selective circuit breaker and devolved on parts of the installation, for example distinguished according to the nature of the devices. loads to protect.
  • the idea underlying the selectivity is to have two successive protection equipment, the line circuit breaker being supposed to cut only the branch in which the incident occurred, while the selective circuit-breaker placed upstream of all the lines of the installation only works in support of the line circuit-breaker concerned, in case of malfunction of the latter.
  • the object of the present invention is to provide a selective circuit breaker architecture that can be easily applied to two possible formats of devices responding to two different types of connections in an installation.
  • the selective circuit breakers can be connected to the installation either by conductors attached to the devices in connection devices for example cage and screws provided for this purpose, or by clipping current paths on bars.
  • connection devices This has a direct impact on the product architecture as the locations of the connections differ in the cases.
  • the fixing of conductors in connection devices is performed at the small sides of the housing located at both longitudinal ends of the products.
  • fastening by clipping on a busbar takes place at the level of the sole of the product.
  • the selective circuit breaker of the invention is in practice and conventionally arranged in an insulating casing formed of two half-shells of inverted T-shaped volume forming a first parallelepiped-shaped volume surmounting a sole and surmounted by a shoulder also of parallelepipedal appearance. substantially centered relative to the first volume, two respectively left and right portions of said volume being further distinguished, defined by a transverse plane of central appearance.
  • these subsets are manipulable in a single operation because their different components are fixed to each other so as to make each a "super component" individualized and autonomous.
  • this approach is advantageous insofar as it allows the implementation of a complete automation of the assembly of the circuit breaker.
  • the cost of production of the device becomes economically very advantageous, knowing moreover that the architecture identity for the two connection solutions allows their manufacture in very little different assembly lines.
  • the lock subassembly is placed in the shoulder, occupying a transverse space less than or equal to 70% of the width of said shoulder. It is preferably assembled between two side flanges for fixing its components, which gives it a homogeneity and makes it easily manipulated and transportable.
  • the secondary fixed contact and the free end of the main thermal actuator of the main circuit subassembly, the secondary mobile contact and the secondary thermal actuator of the secondary circuit subassembly, and a trainer adapted to connect the thermal actuators to the lock are also placed in the shoulder, in the residual transverse space of the width of the shoulder, a spacer of insulating material being interposed between the two transverse spaces occupying respectively at most 70% for the lock subassembly and at the at least 30% of the width of the shoulder for said residual space.
  • the secondary thermal actuator is more precisely placed against the right wall of the shoulder.
  • the main circuit subsystem is mainly disposed in the left portion of the first volume.
  • a cage and screw connection device is attached by a conductive braid to the main circuit subassembly.
  • the arc cutting subassembly is placed in the right portion of the first volume, occupying a transverse space of at most 70% of the width of said portion.
  • a cage and screw connection device is secured via a rigid terminal to the main fixed contact, and is therefore added to the arc cutting subassembly.
  • the resistance of the subsystem subsystem is placed in the residual transverse space in the width of the straight portion, a spacer of insulating material being interposed between the two transverse spaces forming respectively at most 70% for the subset of arc cutting and at least 30% of the width of said portion for the resistance.
  • the housing is of modular appearance, in this case and in most cases of thickness 1.5 module (26.7mm), and it consists of two half-shells of insulating material assembled, the bottom (1) and the cover (2).
  • the housing comprises a sole (3) provided in this case to be attached to a standard rail equipping for example electrical distribution boxes.
  • Connecting devices are accessible via the small lateral sides (4, 4 ') provided with windows (5) giving access to these connection devices (11, 12) for clamping a conductor into contact with a terminal of the apparatus.
  • the front (6) of the product comprises, in a central shoulder (7), a control lever (8) tiltable between two positions.
  • the housing of the selective circuit breaker has substantially the shape of an inverted T, the lower parallelepiped-shaped volume being surmounted by said shoulder (7) also of parallelepipedal shape and substantially centered with respect to said first volume.
  • the figures 2 and 3 show respectively the different subassemblies equipping the selective circuit breaker of the invention with respect to the half-shells, and their placement in the housing. These subsets will be detailed in the following figures 4 to 7.
  • the lock subassembly (9) is thus housed in the shoulder (7), that is to say in the space (A) as defined in figure 1 .
  • Portion (B) of the figure 1 is occupied by the main circuit sub-assembly (10) connected via a welded braid (26) to a screw cage (11) forming the connecting device opening into the opening (5) of the housing.
  • the other device of the connection (12) is part of this version of the arc cutting subassembly (13) occupying the portion (C) of the housing.
  • This subassembly (13) also comprises a spacer of insulating material (14), which delimits the arc-cutting function, occupying at most 70% of the width of the product in the portion (C), and the subassembly secondary circuit (15), or more precisely the resistor (16) of said subsystem sub-circuit (15).
  • the secondary bimetallic strip (17) and the secondary movable contact (18) of the same subassembly actually develop in the volume (A) of the shoulder (7). They are then separated from the lock (9) also occupying this shoulder (7) by another spacer (19) which isolates from said lock (9) the fixed contact of the secondary circuit (20), as well as the upper part of the bimetal principal (21), both from the main circuit subsystem (10).
  • a driver (22) located in the same space of the shoulder (7) makes it possible to communicate to the lock (9) the movements of the bimetallic main (21) and secondary (17), in order to trigger it in case of problems extended in the facility.
  • the lock (traditional) is shown in figure 4 Subassembly manipulable and transportable as a single component. It operates in a traditional way, allowing on the one hand the opening of the main and secondary contacts when it is requested by the coach (22) under the effect of the deflection of one of the bimetallic primary (21) or secondary (17). Conversely, the manipulation of the control lever (8) in the other direction of rotation allows to rearm the product by closing the main and secondary contacts.
  • the mechanical elements of the lock are held by means of two lateral flanges (23, 23 ') which hold the subassembly in the form of a homogeneous and independent component (9).
  • the main circuit subsystem (10) appears in figure 5 , and is also intended to be manipulable and transportable in one piece. It comprises the magnetic coil (24), the main bimetallic strip (21), the main movable contact (32) and the arc sheet (25) developing towards the arc-breaking chamber, and consequently to the portion ( C) of the housing.
  • This subassembly (10) also comprises the connection device (11) with cage and screw (see figure 3 ), fixed to the rest by the braid (26).
  • portion (B) of the housing With protuberances developing towards the portions (A) and (C), more precisely the upper part of the bimetallic strip (21) and the secondary fixed contact (20) for regard to the portion (A), that is to say the shoulder (7), and the arc sheet (25) with respect to the portion (C).
  • This portion (C) is divided into two adjacent subspaces by the spacer (14) (see figures 2 and 7 ), this spacer (14) is not centered in the width of the housing, it reserves at most 70% of the portion (C), in its transverse dimension, the arc cutting subassembly appearing in figure (7 ), while the remaining 30% are mainly occupied by the resistance (16) of the figure 6 .
  • This is surmounted by the bimetallic secondary circuit (17) and the secondary mobile contact (18) which is connected thereto via a braid (26 '). These latter components are placed in the remaining 30% provided by the positioning of the spacer (19) in the width of the shoulder (7).
  • the arc cutting subassembly (13) shown in FIG. figure 7 an exploded version also forms, when mounted, a subassembly that can be handled and transported as a single component, in the same way as the other subassemblies: secondary circuit (15) of the figure 6 , main circuit (10) of the figure 5 and lock (9) of the figure 4 .
  • It consists mainly of a stack of metal plates (27), the main fixed contact (28) connected via a terminal (29) to the rigid connection device (12) cage and screw, two cheeks (30) laterally limiting the space of movement of the electric arc in the direction of the stack (27), said cheeks (30) being each provided with a shielding plate (31).
  • the homogeneous and autonomous functional block design each constituting a single component to be mounted, makes the industrialization of the product very easy and at the same time flexible, both in terms of assembly and in terms of control.
  • the change of architecture attributable to the invention allows a reduction of the order of 20% of the number of components compared to the selective circuit breakers of the prior art.

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  • Breakers (AREA)

Description

La présente invention s'applique au domaine des appareils électriques de protection de ligne, et concerne plus particulièrement les disjoncteurs sélectifs. Ce type d'appareil est disposé en amont dans la protection d'une installation qui bénéficie par ailleurs en général d'autres disjoncteurs de ligne connectés en aval du disjoncteur sélectif et dévolus à des parties de l'installation par exemple distinguées selon la nature des charges à protéger.The present invention applies to the field of electrical line protection apparatus, and more particularly relates to selective circuit breakers. This type of apparatus is disposed upstream in the protection of an installation which also generally benefits from other line circuit breakers connected downstream of the selective circuit breaker and devolved on parts of the installation, for example distinguished according to the nature of the devices. loads to protect.

Le document EP1365432 décrit un disjoncteur sélectif disposé dans un boîtier isolant de type modulaire formé de deux demi-coquilles de volume en T renversé formant un premier volume d'allure parallélépipédique surmontant une semelle et surmonté d'un épaulement également d'allure parallélépipédique sensiblement centré par rapport au premier volume, deux portions respectivement gauche et droite dudit volume étant par ailleurs distinguées, définies par un plan transversal d'allure centrale, ledit disjoncteur comportant :

  • des dispositifs de connexion permettant la connexion de conducteurs du circuit à protéger via des bornes amont et aval du disjoncteur entre lesquelles se développe une branche principale comprenant un actionneur thermique principal, une paire de contacts respectivement mobile principal et fixe principal et un actionneur magnétique principal apte à écarter lesdits contacts en cas de court-circuit dans le circuit à protéger et, en parallèle de ces contacts principaux,
  • une branche secondaire comportant une paire de contacts respectivement mobile secondaire et fixe secondaire, un actionneur thermique secondaire et une résistance,
  • une serrure mécanique actionnée, pour l'ouverture des contacts mobiles principal et secondaire, par les actionneurs thermiques principal et secondaire, et/ou par une pièce de liaison d'un produit adjacent,
  • une manette de commande dépassant de la façade du boîtier opposée à la semelle, apte à réarmer la serrure et qui est rotative entre deux positions correspondant respectivement à la fermeture et à l'ouverture des contacts, et
  • une chambre de coupure d'arc,
le disjoncteur comportant une pluralité de sous-ensembles distincts et autonomes disposés dans un boîtier de largeur au plus égale à 1,5 module :
  • un sous-ensemble serrure,
  • un sous-ensemble circuit secondaire incluant la résistance et l'actionneur thermique secondaire, et
  • un sous ensemble circuit principal et coupure de l'arc.
The document EP1365432 discloses a selective circuit breaker disposed in a modular type of insulating housing formed of two half-shells of inverted T volume forming a first parallelepiped-shaped volume surmounting a sole and surmounted by a shoulder also of parallelepipedal shape substantially centered with respect to the first volume, two respectively left and right portions of said volume being further distinguished, defined by a transverse plane of central appearance, said circuit breaker comprising:
  • connection devices for connecting the conductors of the circuit to be protected via upstream and downstream terminals of the circuit breaker between which a main branch is developed comprising a main thermal actuator, a pair of respectively main and main fixed movable contacts and a main magnetic actuator capable of to discard said contacts in the event of a short circuit in the circuit to be protected and, in parallel with these main contacts,
  • a secondary branch comprising a secondary and secondary fixed secondary mobile contact pair, a secondary thermal actuator and a resistor,
  • a mechanical lock actuated, for the opening of the main and secondary movable contacts, by the main and secondary thermal actuators, and / or by a connecting piece of an adjacent product,
  • a control lever protruding from the front of the housing opposite to the sole, adapted to reset the lock and which is rotatable between two positions respectively corresponding to the closing and opening of the contacts, and
  • an arc cutting chamber,
the circuit breaker comprising a plurality of separate and autonomous subassemblies arranged in a housing of width at most equal to 1.5 module:
  • a lock subassembly,
  • a secondary circuit subassembly including the resistor and the secondary thermal actuator, and
  • a subassembly main circuit and cutting the arc.

L'idée à la base de la sélectivité est de pouvoir disposer de deux équipements de protection successifs, le disjoncteur de ligne étant supposé couper uniquement la branche dans laquelle s'est produit l'incident, alors que le disjoncteur sélectif placé en amont de toutes les lignes de l'installation ne fonctionne qu'à l'appui du disjoncteur de ligne concerné, en cas de défaillance de fonctionnement de ce dernier.The idea underlying the selectivity is to have two successive protection equipment, the line circuit breaker being supposed to cut only the branch in which the incident occurred, while the selective circuit-breaker placed upstream of all the lines of the installation only works in support of the line circuit-breaker concerned, in case of malfunction of the latter.

Le but de la présente invention est de proposer une architecture du disjoncteur sélectif qui puisse être appliquée facilement à deux formats possibles d'appareils répondant à deux types de raccordements distincts dans une installation. Selon la culture professionnelle du lieu de ladite installation, qui peut dépendre de règlements et normes nationales concernant les appareils électriques de protection d'installations domestiques ou simplement résulter de différences de pratiques traditionnelles, les disjoncteurs sélectifs peuvent être raccordés à l'installation soit par des conducteurs fixés aux appareils dans des dispositifs de raccordement par exemple à cage et vis prévus à cet effet, soit par clipsage de voies de courant sur des barres.The object of the present invention is to provide a selective circuit breaker architecture that can be easily applied to two possible formats of devices responding to two different types of connections in an installation. Depending on the professional culture of the place of said installation, which may be subject to national regulations and standards concerning electrical appliances for the protection of domestic installations or simply to result from Differences in traditional practices, the selective circuit breakers can be connected to the installation either by conductors attached to the devices in connection devices for example cage and screws provided for this purpose, or by clipping current paths on bars.

Cela a une incidence directe sur l'architecture du produit dans la mesure où les endroits où se font les raccordements diffèrent dans les boîtiers. Ainsi, la fixation de conducteurs dans des dispositifs de raccordement s'effectue au niveau des petits côtés du boîtier situés aux deux extrémités longitudinales des produits. En revanche, la fixation par clipsage sur un jeu de barres s'effectue au niveau de la semelle du produit.This has a direct impact on the product architecture as the locations of the connections differ in the cases. Thus, the fixing of conductors in connection devices is performed at the small sides of the housing located at both longitudinal ends of the products. On the other hand, the fastening by clipping on a busbar takes place at the level of the sole of the product.

Dans la nouvelle architecture proposée dans le cadre de l'invention, la distinction entre les architectures se fait uniquement au niveau du raccordement à l'installation, qui ne constitue qu'une fonction périphérique du produit, et l'organisation du reste des composants est globalement la même quelle que soit la solution de raccordement.In the new architecture proposed in the context of the invention, the distinction between architectures is made only at the connection to the installation, which is only a peripheral function of the product, and the organization of the rest of the components is overall the same regardless of the connection solution.

Le disjoncteur sélectif de l'invention est en pratique et classiquement disposé dans un boîtier isolant formé de deux demi-coquilles de volume en T renversé formant un premier volume d'allure parallélépipédique surmontant une semelle et surmonté d'un épaulement également d'allure parallélépipédique sensiblement centré par rapport au premier volume, deux portions respectivement gauche et droite dudit volume étant par ailleurs distinguées, définies par un plan transversal d'allure centrale.The selective circuit breaker of the invention is in practice and conventionally arranged in an insulating casing formed of two half-shells of inverted T-shaped volume forming a first parallelepiped-shaped volume surmounting a sole and surmounted by a shoulder also of parallelepipedal appearance. substantially centered relative to the first volume, two respectively left and right portions of said volume being further distinguished, defined by a transverse plane of central appearance.

Le disjoncteur sélectif comporte par ailleurs classiquement :

  • des dispositifs de connexion permettant la connexion de conducteurs du circuit à protéger via des bornes amont et aval du disjoncteur entre lesquelles se développe une branche principale comprenant un actionneur thermique principal, une paire de contacts respectivement mobile principal et fixe principal et un actionneur magnétique principal apte à écarter lesdits contacts en cas de court-circuit dans le circuit à protéger et, en parallèle de ces contacts principaux,
  • une branche secondaire comportant une paire de contacts respectivement mobile secondaire et fixe secondaire, un actionneur thermique secondaire et une résistance,
  • une serrure mécanique actionnée, pour l'ouverture des contacts mobiles principal et secondaire, par les actionneurs thermiques principal et secondaire, et/ou par une pièce de liaison d'un appareil électrique adjacent,
  • une manette de commande dépassant de la façade du boîtier opposée à la semelle, apte à réarmer la serrure et qui est rotative entre deux positions correspondant respectivement à la fermeture et à l'ouverture des contacts, et
  • une chambre de coupure d'arc.
The selective circuit breaker also conventionally comprises:
  • connection devices for connecting the conductors of the circuit to be protected via upstream and downstream terminals of the circuit breaker between which a main branch is developed comprising a main thermal actuator, a pair of respectively main and main fixed movable contacts and a main magnetic actuator capable of to discard said contacts in the event of a short circuit in the circuit to be protected and, in parallel with these main contacts,
  • a secondary branch comprising a secondary and secondary fixed secondary mobile contact pair, a secondary thermal actuator and a resistor,
  • a mechanical lock actuated, for the opening of the main and secondary movable contacts, by the main and secondary thermal actuators, and / or by a connecting piece of an adjacent electrical apparatus,
  • a control lever protruding from the front of the housing opposite to the sole, adapted to reset the lock and which is rotatable between two positions respectively corresponding to the closing and opening of the contacts, and
  • an arc cutting chamber.

Selon l'invention, le disjoncteur sélectif comporte une pluralité de sous-ensembles distincts et autonomes disposés dans un boîtier de largeur au plus égale à 1,5 modules :

  • un sous-ensemble serrure ;
  • un sous-ensemble circuit principal comprenant l'actionneur magnétique principal, l'actionneur thermique principal, le contact mobile principal, le contact fixe secondaire et une tôle d'arc de la chambre de coupure d'arc ;
  • un sous-ensemble coupure de l'arc comprenant un empilement de tôles déions, deux joues latérales munies chacune d'une tôle de blindage, ainsi que le contact fixe principal ;
  • un sous-ensemble circuit secondaire incluant la résistance, l'actionneur thermique secondaire et le contact mobile secondaire.
According to the invention, the selective circuit breaker comprises a plurality of distinct and autonomous subassemblies arranged in a housing of width at most equal to 1.5 modules:
  • a lock subassembly;
  • a main circuit subassembly comprising the main magnetic actuator, the main thermal actuator, the main movable contact, the secondary fixed contact and an arc sheet of the arc breaking chamber;
  • an arc cutting subassembly comprising a stack of metal sheets, two side panels each provided with a shielding plate, and the main fixed contact;
  • a secondary circuit subassembly including the resistor, the secondary thermal actuator and the secondary movable contact.

En fait, dans l'invention, ces sous-ensembles sont manipulables en une seule opération car leurs différents composants sont fixés les uns aux autres de manière à faire de chacun un « super composant » individualisé et autonome. Sur un plan industriel, cette approche est avantageuse dans la mesure où elle permet la mise en oeuvre d'une automatisation complète de l'assemblage du disjoncteur. Le coût de production de l'appareil devient économiquement très avantageux, sachant au surplus que l'identité d'architecture pour les deux solutions de connexion permet leur fabrication en des chaînes de montage très peu différentes.In fact, in the invention, these subsets are manipulable in a single operation because their different components are fixed to each other so as to make each a "super component" individualized and autonomous. On an industrial level, this approach is advantageous insofar as it allows the implementation of a complete automation of the assembly of the circuit breaker. The cost of production of the device becomes economically very advantageous, knowing moreover that the architecture identity for the two connection solutions allows their manufacture in very little different assembly lines.

Dans la configuration de l'invention, le sous-ensemble serrure est placé dans l'épaulement, occupant un espace transversal inférieur ou égal à 70% de la largeur dudit épaulement. Il est de préférence assemblé entre deux flasques latéraux de fixation de ses composants, ce qui lui confère une homogénéité et le rend aisément manipulable et transportable.In the configuration of the invention, the lock subassembly is placed in the shoulder, occupying a transverse space less than or equal to 70% of the width of said shoulder. It is preferably assembled between two side flanges for fixing its components, which gives it a homogeneity and makes it easily manipulated and transportable.

Le contact fixe secondaire et l'extrémité libre de l'actionneur thermique principal du sous-ensemble circuit principal, le contact mobile du secondaire et l'actionneur thermique secondaire du sous-ensemble circuit secondaire, et un entraîneur apte à relier les actionneurs thermiques à la serrure sont également placés dans l'épaulement, dans l'espace transversal résiduel de la largeur de l'épaulement, une entretoise en matériau isolant étant interposée entre les deux espaces transversaux occupant respectivement au maximum 70% pour le sous-ensemble serrure et au minimum 30% de la largeur de l'épaulement pour ledit espace résiduel. L'actionneur thermique secondaire est plus précisément placé contre la paroi de droite de l'épaulement.The secondary fixed contact and the free end of the main thermal actuator of the main circuit subassembly, the secondary mobile contact and the secondary thermal actuator of the secondary circuit subassembly, and a trainer adapted to connect the thermal actuators to the lock are also placed in the shoulder, in the residual transverse space of the width of the shoulder, a spacer of insulating material being interposed between the two transverse spaces occupying respectively at most 70% for the lock subassembly and at the at least 30% of the width of the shoulder for said residual space. The secondary thermal actuator is more precisely placed against the right wall of the shoulder.

Le sous-ensemble circuit principal est quant à lui principalement disposé dans la portion gauche du premier volume.The main circuit subsystem is mainly disposed in the left portion of the first volume.

Dans la version à dispositifs de connexion ouvrant dans les petites faces latérales du boîtier, version à raccorder au circuit par des conducteurs et non des barres, un dispositif de connexion à cage et vis est attaché par une tresse conductrice au sous-ensemble circuit principal.In the version with connection devices opening in the small side faces of the housing, version to be connected to the circuit by conductors and not bars, a cage and screw connection device is attached by a conductive braid to the main circuit subassembly.

Par ailleurs, le sous-ensemble de coupure d'arc est placé dans la portion droite du premier volume, occupant un espace transversal d'au maximum 70% de la largeur de ladite portion.Moreover, the arc cutting subassembly is placed in the right portion of the first volume, occupying a transverse space of at most 70% of the width of said portion.

Dans la version à raccorder au circuit par des conducteurs, un dispositif de connexion à cage et vis est solidarisé via une borne rigide au contact fixe principal, et se rajoute par conséquent au sous-ensemble de coupure d'arc.In the version to be connected to the circuit by conductors, a cage and screw connection device is secured via a rigid terminal to the main fixed contact, and is therefore added to the arc cutting subassembly.

Enfin, la résistance du sous-ensemble circuit secondaire est placée dans l'espace transversal résiduel dans la largeur de la portion droite, une entretoise en matériau isolant étant interposée entre les deux espaces transversaux formant respectivement au maximum 70% pour le sous-ensemble de coupure d'arc et au minimum 30% de la largeur de ladite portion pour la résistance.Finally, the resistance of the subsystem subsystem is placed in the residual transverse space in the width of the straight portion, a spacer of insulating material being interposed between the two transverse spaces forming respectively at most 70% for the subset of arc cutting and at least 30% of the width of said portion for the resistance.

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

  • la figure 1 est une vue en perspective du boîtier du disjoncteur sélectif de l'invention montrant un découpage virtuel de l'espace intérieur du boîtier en trois zones principales ;
  • la figure 2 est une vue en perspective éclatée du disjoncteur sélectif de l'invention ;
  • la figure 3 représente, en vue perspective, l'ensemble monté dans la demi-coquille formant le fond du boîtier, l'autre demi-coquille formant le couvercle n'étant pas refermée ;
  • la figure 4 représente le sous-ensemble serrure ;
  • la figure 5 illustre le sous-ensemble circuit principal ;
  • la figure 6 représente le sous-ensemble circuit secondaire ; et
  • la figure 7 montre, en perspective éclatée, le sous-ensemble de coupure d'arc pour la version du disjoncteur prévue pour être raccordée au circuit par des conducteurs et non des barres.
The invention will now be described in more detail, with reference to the appended figures, for which:
  • the figure 1 is a perspective view of the housing of the selective circuit breaker of the invention showing a virtual cutting of the interior space of the housing into three main areas;
  • the figure 2 is an exploded perspective view of the selective circuit breaker of the invention;
  • the figure 3 represents, in perspective view, the assembly mounted in the half-shell forming the bottom of the housing, the other half-shell forming the lid not being closed;
  • the figure 4 represents the lock subassembly;
  • the figure 5 illustrates the main circuit subsystem;
  • the figure 6 represents the subsystem subsystem; and
  • the figure 7 shows, in exploded perspective, the arc-breaking subassembly for the version of the circuit-breaker intended to be connected to the circuit by conductors and not bars.

En référence à la figure 1, le boîtier est d'aspect modulaire, en l'occurrence et dans la plupart des cas d'épaisseur 1.5 module (26.7mm), et il se compose de deux demi-coquilles en matériau isolant assemblées, le fond (1) et le couvercle (2). Dans la version présentée, le boîtier comporte une semelle (3) prévue en l'occurrence pour pouvoir être fixée à un rail standard équipant par exemple des coffrets de distribution électrique.With reference to the figure 1 , the housing is of modular appearance, in this case and in most cases of thickness 1.5 module (26.7mm), and it consists of two half-shells of insulating material assembled, the bottom (1) and the cover (2). In the version shown, the housing comprises a sole (3) provided in this case to be attached to a standard rail equipping for example electrical distribution boxes.

Des dispositifs de raccordement sont accessibles via les petits côtés latéraux (4, 4') dotés de fenêtres (5) donnant accès à ces dispositifs de raccordement (11, 12) permettant de serrer un conducteur au contact d'une borne de l'appareil.Connecting devices are accessible via the small lateral sides (4, 4 ') provided with windows (5) giving access to these connection devices (11, 12) for clamping a conductor into contact with a terminal of the apparatus.

La façade (6) du produit comporte, dans un épaulement central (7), une manette de commande (8) basculable entre deux positions. Le boîtier du disjoncteur sélectif a sensiblement la forme d'un T renversé, le volume inférieur d'allure parallélépipédique étant surmonté dudit épaulement (7) également d'allure parallélépipédique et sensiblement centré par rapport au dit premier volume.The front (6) of the product comprises, in a central shoulder (7), a control lever (8) tiltable between two positions. The housing of the selective circuit breaker has substantially the shape of an inverted T, the lower parallelepiped-shaped volume being surmounted by said shoulder (7) also of parallelepipedal shape and substantially centered with respect to said first volume.

Celui-ci peut être découpé en deux portions (B) et (C), respectivement qualifiées de portion gauche (B) et de portion droite (C), et surmontées du volume (A) central de l'épaulement (7).This can be cut into two portions (B) and (C), respectively qualified left portion (B) and right portion (C), and surmounted by the volume (A) central shoulder (7).

Les figures 2 et 3 montrent respectivement les différents sous-ensembles équipant le disjoncteur sélectif de l'invention par rapport aux demi-coquilles, ainsi que leur placement dans le boîtier. Ces sous-ensembles seront détaillés dans les figures suivantes 4 à 7. Le sous-ensemble serrure (9) est ainsi logé dans l'épaulement (7), c'est-à-dire dans l'espace (A) tel que défini en figure 1. La portion (B) de la figure 1 est occupée par le sous-ensemble circuit principal (10) relié via une tresse soudée (26) à une cage à vis (11) formant le dispositif de raccordement débouchant dans l'ouverture (5) du boîtier. L'autre dispositif du raccordement (12) fait partie dans cette version du sous-ensemble de coupure d'arc (13) occupant la portion (C) du boîtier. Ce sous-ensemble (13) comporte également une entretoise en matériau isolant (14), qui délimite la fonction de coupure d'arc, occupant au maximum 70% de la largeur du produit dans la portion (C), et le sous-ensemble circuit secondaire (15), ou plus précisément la résistance (16) dudit sous-ensemble circuit secondaire (15). En partie supérieure, le bilame thermique secondaire (17) et le contact mobile secondaire (18) du même sous-ensemble se développent en fait dans le volume (A) de l'épaulement (7). Ils sont alors séparés de la serrure (9) occupant également cet épaulement (7) par une autre entretoise (19) qui isole de ladite serrure (9) le contact fixe du circuit secondaire (20), ainsi que la partie supérieure du bilame principal (21), tous deux issus du sous-ensemble circuit principal (10). Un entraîneur (22) situé dans le même espace de l'épaulement (7) permet de communiquer à la serrure (9) les déplacements des bilames principal (21) et secondaire (17), en vue de la faire déclencher en cas de problème prolongé dans l'installation.The figures 2 and 3 show respectively the different subassemblies equipping the selective circuit breaker of the invention with respect to the half-shells, and their placement in the housing. These subsets will be detailed in the following figures 4 to 7. The lock subassembly (9) is thus housed in the shoulder (7), that is to say in the space (A) as defined in figure 1 . Portion (B) of the figure 1 is occupied by the main circuit sub-assembly (10) connected via a welded braid (26) to a screw cage (11) forming the connecting device opening into the opening (5) of the housing. The other device of the connection (12) is part of this version of the arc cutting subassembly (13) occupying the portion (C) of the housing. This subassembly (13) also comprises a spacer of insulating material (14), which delimits the arc-cutting function, occupying at most 70% of the width of the product in the portion (C), and the subassembly secondary circuit (15), or more precisely the resistor (16) of said subsystem sub-circuit (15). In the upper part, the secondary bimetallic strip (17) and the secondary movable contact (18) of the same subassembly actually develop in the volume (A) of the shoulder (7). They are then separated from the lock (9) also occupying this shoulder (7) by another spacer (19) which isolates from said lock (9) the fixed contact of the secondary circuit (20), as well as the upper part of the bimetal principal (21), both from the main circuit subsystem (10). A driver (22) located in the same space of the shoulder (7) makes it possible to communicate to the lock (9) the movements of the bimetallic main (21) and secondary (17), in order to trigger it in case of problems extended in the facility.

La serrure (traditionnelle) est montrée en figure 4 montée en sous-ensemble manipulable et transportable comme un seul composant. Elle fonctionne de manière traditionnelle, permettant d'une part l'ouverture des contacts principaux et secondaires lorsqu'elle est sollicitée par l'entraîneur (22) sous l'effet de la déflexion de l'un des bilames principal (21) ou secondaire (17). A l'inverse, la manipulation de la manette de commande (8) dans l'autre sens de rotation permet de réarmer le produit en refermant les contacts principaux et secondaires. Les éléments mécaniques de la serrure sont maintenus à l'aide de deux flasques latéraux (23, 23') qui maintiennent le sous-ensemble sous forme d'un composant (9) homogène et autonome.The lock (traditional) is shown in figure 4 Subassembly manipulable and transportable as a single component. It operates in a traditional way, allowing on the one hand the opening of the main and secondary contacts when it is requested by the coach (22) under the effect of the deflection of one of the bimetallic primary (21) or secondary (17). Conversely, the manipulation of the control lever (8) in the other direction of rotation allows to rearm the product by closing the main and secondary contacts. The mechanical elements of the lock are held by means of two lateral flanges (23, 23 ') which hold the subassembly in the form of a homogeneous and independent component (9).

Le sous-ensemble circuit principal (10) apparaît en figure 5, et est également prévu pour être manipulable et transportable d'un seul tenant. Il comporte la bobine magnétique (24), le bilame principal (21), le contact mobile principal (32) et la tôle d'arc (25) se développant vers la chambre de coupure d'arc, et par conséquent vers la portion (C) du boîtier. Ce sous-ensemble (10) comporte également le dispositif de raccordement (11) à cage et vis (voir en figure 3), fixé au reste par la tresse (26). Il occupe, comme mentionné auparavant, la portion (B) du boîtier, avec des excroissances se développant vers les portions (A) et (C), plus précisément la partie supérieure du bilame (21) et le contact fixe secondaire (20) pour ce qui concerne la portion (A), c'est-à-dire l'épaulement (7), et la tôle d'arc (25) pour ce qui concerne la portion (C).The main circuit subsystem (10) appears in figure 5 , and is also intended to be manipulable and transportable in one piece. It comprises the magnetic coil (24), the main bimetallic strip (21), the main movable contact (32) and the arc sheet (25) developing towards the arc-breaking chamber, and consequently to the portion ( C) of the housing. This subassembly (10) also comprises the connection device (11) with cage and screw (see figure 3 ), fixed to the rest by the braid (26). It occupies, as mentioned before, the portion (B) of the housing, with protuberances developing towards the portions (A) and (C), more precisely the upper part of the bimetallic strip (21) and the secondary fixed contact (20) for regard to the portion (A), that is to say the shoulder (7), and the arc sheet (25) with respect to the portion (C).

Cette portion (C) est divisée en deux sous-espaces adjacents par l'entretoise (14) (voir en figures 2 et 7), cette entretoise (14) n'est pas centrée dans la largeur du boîtier, elle réserve au maximum 70% de la portion (C), dans sa dimension transversale, au sous-ensemble de coupure d'arc apparaissant en figure (7), alors que les 30% restants au minimum sont principalement occupés par la résistance (16) de la figure 6. Celle-ci est surmontée du bilame du circuit secondaire (17) et du contact mobile secondaire (18) qui lui est relié via une tresse (26'). Ces derniers composants sont placés dans les 30% résiduels prévus par le positionnement de l'entretoise (19) dans la largeur de l'épaulement (7).This portion (C) is divided into two adjacent subspaces by the spacer (14) (see figures 2 and 7 ), this spacer (14) is not centered in the width of the housing, it reserves at most 70% of the portion (C), in its transverse dimension, the arc cutting subassembly appearing in figure (7 ), while the remaining 30% are mainly occupied by the resistance (16) of the figure 6 . This is surmounted by the bimetallic secondary circuit (17) and the secondary mobile contact (18) which is connected thereto via a braid (26 '). These latter components are placed in the remaining 30% provided by the positioning of the spacer (19) in the width of the shoulder (7).

Le sous-ensemble de coupure d'arc (13) montré en figure 7 en version éclatée forme également, lorsqu'il est monté, un sous-ensemble manipulable et transportable comme un unique composant, de la même manière que les autres sous-ensembles : circuit secondaire (15) de la figure 6, circuit principal (10) de la figure 5 et serrure (9) de la figure 4. Il est composé à titre principal d'un empilement de tôles déions (27), du contact fixe principal (28) relié via une borne (29) rigide au dispositif de raccordement (12) à cage et vis, de deux joues (30) limitant latéralement l'espace de déplacement de l'arc électrique en direction de l'empilement (27), lesdites joues (30) étant chacune munie d'une tôle de blindage (31).The arc cutting subassembly (13) shown in FIG. figure 7 an exploded version also forms, when mounted, a subassembly that can be handled and transported as a single component, in the same way as the other subassemblies: secondary circuit (15) of the figure 6 , main circuit (10) of the figure 5 and lock (9) of the figure 4 . It consists mainly of a stack of metal plates (27), the main fixed contact (28) connected via a terminal (29) to the rigid connection device (12) cage and screw, two cheeks (30) laterally limiting the space of movement of the electric arc in the direction of the stack (27), said cheeks (30) being each provided with a shielding plate (31).

L'ensemble du disjoncteur de l'invention, une fois monté, est visible en figure 3, avant fixation du couvercle (2) pour obtenir le produit fini tel qu'apparaissant en figure 1.The assembly of the circuit breaker of the invention, once mounted, is visible in figure 3 , before fixing the lid (2) to obtain the finished product as appearing in figure 1 .

La conception par blocs fonctionnels homogènes et autonomes, constituant chacun un seul composant à monter, rend l'industrialisation du produit très aisée et en même temps flexible, tant en termes de montage qu'en termes de contrôle.The homogeneous and autonomous functional block design, each constituting a single component to be mounted, makes the industrialization of the product very easy and at the same time flexible, both in terms of assembly and in terms of control.

Le changement d'architecture imputable à l'invention permet une réduction de l'ordre de 20% du nombre de composants par rapport aux disjoncteurs sélectifs de l'art antérieur.The change of architecture attributable to the invention allows a reduction of the order of 20% of the number of components compared to the selective circuit breakers of the prior art.

Claims (10)

  1. Selective circuit breaker arranged in an insulating case of modular type formed by two half-shells (1, 2) of inverted T-shaped volume forming a first volume of parallelepipedal shape surmounting a base (3) and surmounted by a shoulder (7) also of parallelepipedal shape, substantially centred with respect to the first volume, two portions (B, C), respectively left and right, of the said volume being furthermore distinct and defined by a transverse plane of central appearance, the said circuit breaker comprising:
    - connection devices (11, 12) for connecting conductors of the circuit to be protected via upstream and downstream terminals of the circuit breaker, between which is formed a main branch comprising a main thermal actuator (21), a pair of contacts, respectively main mobile (32) and main fixed (28) and a main magnetic actuator (24), capable of moving the said contacts (32, 28) apart in the event of a short circuit in the circuit to be protected and in parallel with these main contacts (32, 38),
    - a secondary branch comprising a pair of contacts, respectively secondary mobile (18) and secondary fixed (20), a secondary thermal actuator (17) and a resistor (16),
    - a mechanical lock actuated by the main (21) and secondary (17) thermal actuators, and/or by a connecting piece of an adjacent product, in order to open the main (32) and secondary (18) mobile contacts,
    - a control lever (8) extending beyond the front (6) of the case opposed to the base (3), capable of rearming the lock (9) and rotatable between two positions corresponding respectively to closure and opening of the contacts (32, 28; 18, 20), and
    - an arc cut-off chamber (13),
    the circuit breaker comprising a plurality of distinct and autonomous subassemblies arranged in a case with a width of at most equal to 1.5 times the module:
    - a locking subassembly (9);
    - a main circuit subassembly (10) comprising the main magnetic actuator (24), the main thermal actuator (21), the main mobile contact (32), the secondary fixed contact (20) and an arc plate (25) of the arc cut-off chamber;
    - an arc cut-off subassembly (13) comprising a stack of ion plates (27), two lateral cheeks (30) each provided with a screening plate (31), as well as the main fixed contact (28);
    - a secondary circuit subassembly (15) including the resistor (16), the secondary thermal actuator (17) and the secondary mobile contact (18).
  2. Selective circuit breaker according to the preceding claim, characterized in that the locking subassembly (9) is placed in the shoulder (7), occupying a transverse space less than or equal to 70% of the width of the said shoulder (7).
  3. Selective circuit breaker according to the preceding claim, characterized in that the locking subassembly (9) is assembled between two lateral flanges (23, 23') for fixing its components.
  4. Selective circuit breaker according to one of Claims 2 and 3, characterized in that the secondary fixed contact (20) and the free end of the main thermal actuator (21) of the main circuit subassembly (10), the secondary mobile contact (18) and the secondary thermal actuator (17) of the secondary circuit subassembly (15) and a driver (22) capable of connecting the thermal actuators (21, 17) to the lock (9) are placed in the shoulder (7), in the residual transverse space of the width of the shoulder (7), a spacer (19) made of insulating material being interposed between the two transverse spaces respectively occupying at most 70% for the locking subassembly (9) and at least 300 % of the width of the shoulder (7) for the said residual space.
  5. Selective circuit breaker according to the preceding claim, characterized in that the secondary thermal actuator (17) is placed against the right-hand wall of the shoulder (7).
  6. Selective circuit breaker according to one of the preceding claims, characterized in that the main circuit subassembly (10) is principally arranged in the left-hand portion (B) of the first volume.
  7. Selective circuit breaker according to the preceding claim, characterized in that a connection device with a cage and screw (11) is attached by a conductive braid (26) to the main circuit subassembly (10).
  8. Selective circuit breaker according to one of the preceding claims, characterized in that the arc cut-off subassembly (13) is placed in the right-hand portion (C) of the first volume, occupying a transverse space of at most 70% of the width of the said portion (C).
  9. Selective circuit breaker according to the preceding claim, characterized in that the arc cut-off subassembly (13) comprises a connection device with a cage and screw (12) secured by means of a rigid connector (29) to the main fixed contact (28).
  10. Selective circuit breaker according to one of Claims 8 and 9, characterized in that the resistor (16) of the secondary circuit subassembly (15) is placed in the residual transverse space in the width of the right-hand portion (C), a spacer (14) made of insulating material being interposed between the two transverse spaces forming respectively at most 70% for the arc cut-off subassembly (13) and at least 30% of the width of the said portion (C) for the resistor (16) .
EP12306688.8A 2012-12-27 2012-12-27 Selective circuit-breaker arranged in a modular case Active EP2750157B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12306688.8A EP2750157B1 (en) 2012-12-27 2012-12-27 Selective circuit-breaker arranged in a modular case
CN201310757458.7A CN103903917B (en) 2012-12-27 2013-12-27 Be positioned at the selectivity circuit breaker that can construct in housing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12306688.8A EP2750157B1 (en) 2012-12-27 2012-12-27 Selective circuit-breaker arranged in a modular case

Publications (2)

Publication Number Publication Date
EP2750157A1 EP2750157A1 (en) 2014-07-02
EP2750157B1 true EP2750157B1 (en) 2015-06-24

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CN (1) CN103903917B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107799364A (en) * 2017-12-01 2018-03-13 江苏创能电器有限公司 One kind electric leakage breaker of plastic casing

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2703822B1 (en) * 1993-04-07 2002-01-25 Merlin Gerin Multipole circuit breaker with modular assembly.
CN1037794C (en) * 1994-02-10 1998-03-18 松下电工株式会社 A circuit breaker
US6538870B2 (en) * 2001-02-02 2003-03-25 Eaton Corporation Circuit breaker and electrical distribution panel employing the same
EP1365432B8 (en) * 2002-05-21 2010-05-19 Hager Electro GmbH & Co. KG Circuit and/or apparatus protection switch
DE10222360A1 (en) * 2003-02-07 2003-12-04 Hager Electro Gmbh Line and/or equipment excess current/short circuit protection switch has first separation point, magnet mechanism and slower movement mechanism in series in main current path from input to output
DE10305069A1 (en) * 2002-05-21 2004-01-15 Hager Electro Gmbh Electrical resistance for use in protective switching device, especially power circuit breaker, consists of band of electrically conductive material wound with insulating layer between windings
JP2006073200A (en) * 2004-08-31 2006-03-16 Fuji Electric Fa Components & Systems Co Ltd Circuit breaker
ITMI20062033A1 (en) * 2006-10-23 2008-04-24 Gewiss Spa AUTOTEST AND AUTOMATIC RESET DEVICE, PARTICULARLY FOR DIFFERENTIAL AND SIMILAR SWITCHES
DE102008017472A1 (en) * 2007-04-28 2008-11-06 Abb Ag Service switching device
JP5302549B2 (en) * 2008-02-21 2013-10-02 パナソニックエコソリューションズ電路株式会社 Circuit breaker
CN101923987B (en) * 2009-06-09 2013-06-12 科都电气有限公司 Improved breaker

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CN103903917B (en) 2016-03-16
CN103903917A (en) 2014-07-02
EP2750157A1 (en) 2014-07-02

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