EP0649158A1 - Differential protection block with cable passage - Google Patents

Differential protection block with cable passage Download PDF

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Publication number
EP0649158A1
EP0649158A1 EP94410091A EP94410091A EP0649158A1 EP 0649158 A1 EP0649158 A1 EP 0649158A1 EP 94410091 A EP94410091 A EP 94410091A EP 94410091 A EP94410091 A EP 94410091A EP 0649158 A1 EP0649158 A1 EP 0649158A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
differential protection
branch
face
protection block
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
EP94410091A
Other languages
German (de)
French (fr)
Other versions
EP0649158B1 (en
Inventor
Michel Bonniau
Marc Paupert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric Industries SAS
Original Assignee
Merlin Gerin SA
Schneider Electric SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Merlin Gerin SA, Schneider Electric SE filed Critical Merlin Gerin SA
Publication of EP0649158A1 publication Critical patent/EP0649158A1/en
Application granted granted Critical
Publication of EP0649158B1 publication Critical patent/EP0649158B1/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
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H01H83/226—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with differential transformer
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0264—Mountings or coverplates for complete assembled circuit breakers, e.g. snap mounting in panel
    • H01H71/0271—Mounting several complete assembled circuit breakers together

Definitions

  • the present invention relates generally to a differential protection block adaptable to an electric circuit breaker.
  • electrical circuit breaker will be understood to mean any type of electrical device fulfilling, inter alia, a function of electrical connection and electrical cut-off, these electrical devices possibly being for example an electrical circuit breaker, an electrical switch, etc.
  • a differential protection block which is in the general form of a substantially parallelepipedal housing intended to come to be pressed laterally and to be fixed against an electric circuit breaker and which comprises in its upper part a protuberance which projects from the corresponding upper edge of the electric circuit breaker, this protuberance having a hole which passes right through it.
  • a torus with a horizontal axis is housed in the protuberance of the differential protection block and this torus surrounds the hole.
  • a totalizing transformer is constituted by this toroid on which a secondary winding is wound.
  • the electric cables which must pass through the hole of the differential protection block must be twisted so as to present substantially a right angle between the end of the strand of the cable which is received in the corresponding terminal of the electric circuit breaker and the part of the wire which passes through the hole of the differential protection block.
  • the electrical cables are relatively large, this is not an easy and satisfactory way of operating to make the electrical connections. Mechanical bending at multiple right angles to electrical cables can promote certain deterioration in the electrical insulation of these cables and also promote poor electrical connection at the corresponding terminals of the electrical circuit breaker.
  • an electrical circuit breaker comprising a generally substantially parallelepipedal housing, this housing integrally comprising a protruding part which includes a magnetic coil toroid.
  • the electric cables which arrive or leave the circuit breaker must pass through a hole made in this protuberance in the center of the magnetic coil core, so that their ends are respectively connected to the different corresponding terminals of the circuit breaker.
  • a drawback of such a device lies in the fact that the totalizing transformer constituted by the magnetic coil toroid constitutes an element which is integrated into the single casing of the circuit breaker and which is therefore not separable from the circuit breaker.
  • Another drawback resides in the fact that the connection terminals of the electric cables which must pass through the toroid are located in a housing formed between the part of the housing which includes the torus and another part of the same housing which includes the entire mechanism of the circuit breaker. Such an arrangement is not advantageous from the point of view of the convenience of connecting the cables to these terminals.
  • such a device can only be used for a two-pole circuit breaker, that is to say a circuit breaker comprising only two terminals of input connection (and two output connection terminals) and only one cable including two electrical conductors, one end of each conductor being connected to the corresponding terminal and the electrical cable itself passing through the hole in the center of the toroid magnetic coil.
  • a circuit breaker comprising only two terminals of input connection (and two output connection terminals) and only one cable including two electrical conductors, one end of each conductor being connected to the corresponding terminal and the electrical cable itself passing through the hole in the center of the toroid magnetic coil.
  • An object of the present invention is to provide a differential protection block adaptable to a circuit breaker or an electrical switch, in which the fact of associating such a differential protection block with a particular circuit breaker or electrical switch does not modify the way of '' make the various electrical connections of the circuit breaker or electrical switch.
  • Another object of the present invention consists in proposing such a differential protection block which is also presented in a modular form adapted to make the association with the circuit breaker or the electrical switch easy and reliable.
  • the box can be made from two separate boxes, each of substantially parallelepipedal shape, assembled perpendicularly, so that the first branch can come to bear on the upper or lower side face of the circuit breaker .
  • the vertical passage is formed by several individual passages arranged in correspondence with the orifices.
  • the first branch may include connection pads arranged in projection, adapted to come to engage through orifices in the terminals, and intended to ensure the electrical supply of the differential protection block.
  • FIG. 1 there is a general distinction between a conventional multi-pole electric circuit breaker 1.
  • This circuit breaker 1 conventionally comprises a molded case whose general external shape is that of a parallelepiped which has a front face 2, a left vertical side face 3, a straight vertical side face 4 (not really visible in the figure), an upper horizontal side face 5 (not really visible in the figure), and a lower horizontal side face 6.
  • the side faces 3 and 4 are parallel to one another the other and the side faces 5 and 6 are parallel to each other.
  • the side face 5 includes holes through which bare ends of cables can be introduced, and terminals are arranged inside the housing near this side face 5 and are accessible from the outside so as to be able to connect and disconnect cables with these terminals.
  • the side face 6 includes orifices 7 through which bare ends of cables can be introduced (not shown), and terminals (not visible) are arranged inside the housing near this side face 6 and are accessible from the outside so that you can connect and disconnect the cables with these terminals.
  • circuit breaker 1 On the front face 2, holes 8 are provided which allow the passage of a tool in order to allow the terminals housed in the housing to be actuated in order to connect or disconnect the cables.
  • the number of poles of circuit breaker 1 corresponds to the number of orifices 7, the number of corresponding terminals as well as the number of holes 8.
  • circuit breaker 1 is a four-pole circuit breaker and therefore it is designed to receive four electric cables (visible in Figure 3) each of which is introduced through one of the four orifices 7.
  • the orifices 7 are preferably arranged along a line parallel to the front face 2.
  • the cables (not shown in FIG.
  • circuit breaker 1 When incoming cables are thus connected to the terminals at the level of the upper face 5 and when other outgoing cables are thus connected to the terminals a u level of the lower face 6, the circuit breaker 1 is operatively connected and can therefore, for example, operate to trip when the current intensity in one or more of the cables exceeds a predetermined threshold.
  • the front face 2 of the circuit breaker 1 is provided with a handle 9 for opening and closing the circuit breaker 1.
  • the circuit breaker 1 can be a conventional one-piece multipole circuit breaker or it can in fact be constituted by several separate monopolar circuit breakers arranged side-by-side so as to constitute together a single multipole circuit breaker 1, as is well known in the art.
  • the invention relates more particularly to the differential protection block 10 which is also shown in FIG. 1.
  • the differential protection block 10 includes, in a conventional manner, a summing transformer 11 (represented schematically by a set of dotted lines) comprising a magnetic toroid and a secondary winding, and a trip relay (not visible in Figure 1).
  • the summing transformer 11 and the trip relay are housed inside a housing 12.
  • the housing 12 has two branches perpendicular to each other and rigidly connected one to the other.
  • the first branch 13 is in the general form of a parallelepiped and it extends generally horizontally, that is to say that its height is less than its other dimensions.
  • the first branch 13 further comprises an upper horizontal face 14 visible in FIG. 3.
  • the first branch 13 contains the summing transformer 11 whose magnetic toroid is arranged so as to have a vertical axis.
  • the first branch 13 further comprises at least one vertical passage 15 which passes right through it and which is located inside the magnetic core of the summing transformer 11.
  • the transformer totalizer 11 has a general shape similar to a torus but elongated.
  • the central recess formed by the summing transformer 11 is a recess with a vertical axis but which has an elongated oval shape, an oblong shape or a circular shape.
  • the vertical passage 15 formed so as to pass right through vertically the first branch 13 has an elongated or oblong oval shape.
  • the dimensions of the vertical passage 15 are smaller than the dimensions of the central hole formed by the totalizing transformer 11. In this way, it is possible to accommodate the totalizing transformer 11 inside the first branch 13 around the internal walls which form the vertical passage 15 of the branch 13.
  • the second branch 17 is in the general form of a parallelepiped and it extends generally vertically, that is to say that its width is less than its other dimensions.
  • the second branch 17 contains the trigger relay (not visible in the drawings) and is provided with a reset handle 19.
  • the two branches 13 and 17 are connected to each other at a right angle, so that the upper horizontal face 14 of the first branch 13 and the left vertical side face 18 of the second branch 17 form an angle of 90 °.
  • the vertical lateral face 18 is intended to be pressed against the vertical lateral face 4 of the circuit breaker 1.
  • Protruding and recessed shapes are provided at the side faces 4 and 18 so that, when these two lateral faces 4 and 18 are pressed against one another these forms ensure precise relative positioning of the differential protection block 10 with respect to the circuit breaker 1.
  • a control finger 20 (FIG. 2) is also provided for projecting relative to the vertical lateral face 18, this finger being, conventionally, movable so as to command a tripping action in the circuit breaker 1 when the tripping relay included in the differential protection block 10 is energized.
  • a differential protection block 10 according to the invention on a conventional circuit breaker 1 can be carried out as follows. At the time of this assembly, there is not yet a cable connected to the terminals located at the recesses 7 of the horizontal lateral face 6 of the circuit breaker 1. In this condition, the differential protection block 10 is brought against the circuit breaker 1 so that, on the one hand its vertical lateral face 18 comes into contact with the opposite vertical lateral face 4 of the circuit breaker 1, and that on the other hand the upper horizontal face 14 of the first branch 13 comes in contact with the opposite horizontal face 6 of the circuit breaker. In this position thus obtained, the vertical passage 15 of oblong shape substantially surrounds all of the orifices 7 formed at the level of the lower horizontal surface 6 of the circuit breaker 1. It follows from this that it is then possible to bring a cable electric by passing it vertically through the vertical passage 15 until its stripped end comes to thread into the corresponding orifice 7 in order to electrically connect this stripped end to the corresponding terminal housed in the circuit breaker 1.
  • the secondary winding of the summing transformer 11 is electrically connected to the trip relay housed in the second branch 17 so that the appearance of an electrical signal at the terminals of this secondary winding can actuate, directly or indirectly, the tripping relay, in a conventional manner, so that this tripping relay can in turn control, in a conventional manner, the tripping of the circuit breaker 1 via the control finger 20.
  • this differential protection block 10 further comprises, as can be seen in FIGS. 1 to 4, pads 22 which project upwards at starting from the upper horizontal face 14 of the first branch 13. These areas 22 are arranged so as to engage through corresponding orifices 7 formed at the level of the lower horizontal face 6 of the circuit breaker 1, when the differential protection block 10 is coupled to circuit breaker 1.
  • a terminal 23 is shown which is normally housed inside the circuit breaker 1 opposite a corresponding orifice 7.
  • a cable 24 which is normally passed through the vertical passage 15 of the differential protection block 10 and the stripped end 25 of which is housed in the terminal 23 to be connected to it.
  • the differential protection block is configured according to an alternative embodiment with respect to the differential protection block in FIG. 1.
  • This alternative embodiment consists in that the vertical passage 15 of the block differential protection of Figure 1 is replaced by a number of vertical passages 15A, 15B, 15C, 15D which are arranged in correspondence with the openings 7 of the circuit breaker 1.
  • each cable 24 passes in an individual vertical passage and the cable is better guided in such an individual passage.
  • the summing transformer 11 surrounds the assembly formed by these different vertical passages 15A to 15D, as for the first embodiment of FIG. 1.
  • FIG. 5 shows another alternative embodiment of the invention in which the housing 12 of the differential protection block 10 is not formed in one piece, as for the embodiments of FIGS. 1 to 3, but it is formed in two separate pieces 12A and 12B.
  • the housing 12A corresponds substantially to the branch 17 of the first embodiment and the housing 12B corresponds substantially to the branch 13 of the first embodiment.
  • Removable fixing elements are provided on the two separate housings 12A and 12B so that the housing 12B can be fixed either on the upper face 30 of the housing 12A (as shown on the left side of FIG. 5) , or on the underside 31 of the housing 12A (as shown on the right side of FIG. 5).
  • This alternative embodiment makes it possible to be able to use the same parts forming the housing 12 of the differential protection block according to the invention to either constitute a differential protection block intended to come to measure the differential currents at the level of the incoming cables of a circuit breaker. , or constitute a differential protection block intended to come and measure the differential currents at the level of the circuit breaker feeder cable.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

The invention proposes a differential protection block (10) which can be fitted onto an electric circuit breaker (1) making it possible to avoid cabling mistakes. According to the invention, the differential protection block (10) includes two perpendicular branches (13, 17), a first branch (13) which encloses the totaliser transformer (11), and which encloses a passage (15) which must be followed for the cables for connecting to the terminals (7) of the circuit breaker, and a second branch (17) which encloses the triggering relay. <IMAGE>

Description

La présente invention concerne de façon générale un bloc de protection différentielle adaptable sur un disjoncteur électrique.The present invention relates generally to a differential protection block adaptable to an electric circuit breaker.

Dans la suite du texte, on entendra par "disjoncteur électrique" tout type d'appareil électrique remplissant entre autre une fonction de connexion électrique et de coupure électrique, ces appareils électriques pouvant être par exemple un disjoncteur électrique, un interrupteur électrique, etc.In the remainder of the text, the term “electrical circuit breaker” will be understood to mean any type of electrical device fulfilling, inter alia, a function of electrical connection and electrical cut-off, these electrical devices possibly being for example an electrical circuit breaker, an electrical switch, etc.

Dans la suite du texte également, on supposera par simple commodité d'explication que le disjoncteur électrique est disposé verticalement de façon habituelle et qu'il inclut des bornes d'entrée et de sortie respectivement alignées selon deux rangées horizontales, et on utilisera les termes "horizontal", "vertical", etc. d'une façon relative à cette position supposée du disjoncteur.In the rest of the text also, it will be assumed for the sake of explanation that the electric circuit breaker is arranged vertically in the usual manner and that it includes input and output terminals respectively aligned in two horizontal rows, and the terms will be used. "horizontal", "vertical", etc. in a way relative to this supposed position of the circuit breaker.

On connaît déjà, au travers du document EP-A-0 008 026, un bloc de protection différentielle qui se présente sous la forme générale d'un boîtier sensiblement parallépipédique destiné à venir se plaquer latéralement et se fixer contre un disjoncteur électrique et qui comporte dans sa partie supérieure une protubérance qui est en saillie par rapport au bord supérieur correspondant du disjoncteur électrique, cette protubérance présentant un trou qui la traverse de part en part. Un tore d'axe horizontal est logé dans la protubérance du bloc de protection différentielle et ce tore entoure le trou. Un transformateur totalisateur est constitué par ce tore sur lequel est enroulé un enroulement secondaire. Lorsqu'un tel bloc de protection différentielle est ainsi fixé latéralement contre un disjoncteur électrique, la personne qui effectue l'installation électrique doit obligatoirement faire passer tous les câbles d'arrivée (ou de départ) qui sont destinés à venir se brancher respectivement sur les différentes bornes d'arrivée (ou de départ) du disjoncteur au travers du trou de la protubérance. Ainsi, ces câbles électriques qui traversent ensemble le trou de la protubérance constituent un primaire du transformateur totalisateur dont l'enroulement du tore constitue le secondaire. Un relais de déclenchement est prévu à l'intérieur du boîtier parallélépipédique du bloc de protection différentielle et il est relié aux bornes de l'enroulement secondaire.Already known, through document EP-A-0 008 026, a differential protection block which is in the general form of a substantially parallelepipedal housing intended to come to be pressed laterally and to be fixed against an electric circuit breaker and which comprises in its upper part a protuberance which projects from the corresponding upper edge of the electric circuit breaker, this protuberance having a hole which passes right through it. A torus with a horizontal axis is housed in the protuberance of the differential protection block and this torus surrounds the hole. A totalizing transformer is constituted by this toroid on which a secondary winding is wound. When such a differential protection unit is thus fixed laterally against an electric circuit breaker, the person carrying out the electrical installation must obligatorily pass all the incoming (or outgoing) cables which are intended to come and connect respectively to the different terminals of arrival (or departure) of the circuit breaker through the hole in the protuberance. Thus, these electric cables which together pass through the hole in the protuberance constitute a primary of the totalizing transformer of which the winding of the torus constitutes the secondary. A trip relay is provided inside the parallelepipedic case of the differential protection block and it is connected to the terminals of the secondary winding.

Le fonctionnement d'un tel bloc de protection différentielle est bien connu de l'art, et on peut dire brièvement qu'il consiste en ce qu'il apparaît aux bornes de l'enroulement secondaire une certaine tension électrique lorsque la somme des courants qui traversent respectivement les différents câbles électriques passant au travers du trou est sensiblement différente de zéro. Un inconvénient d'un tel dispositif connu réside dans le fait que les câbles électriques qui doivent être branchés manuellement au disjoncteur électrique en passant préalablement au travers du trou de la protubérance du bloc de protection différentielle peuvent être branchés anormalement, par exemple l'un de ces câbles peut être par inadvertance branché sans passer au travers du trou. Dans un tel cas, la protection différentielle ne fonctionne pas du fait qu'elle ne totalise pas l'ensemble des courants qui traversent le disjoncteur électrique.The operation of such a differential protection block is well known in the art, and it can be said briefly that it consists in the appearance at the terminals of the secondary winding of a certain electric voltage when the sum of the currents which pass through the various electrical cables passing through across the hole is significantly different from zero. A drawback of such a known device resides in the fact that the electric cables which must be manually connected to the electric circuit breaker by passing previously through the hole in the protuberance of the differential protection block can be abnormally connected, for example one of these cables may be inadvertently plugged in without passing through the hole. In such a case, the differential protection does not work because it does not add up all of the currents flowing through the electric circuit breaker.

D'autre part, dans un tel dispositif connu, les câbles électriques qui doivent passer au travers du trou du bloc de protection différentielle doivent être tordus de façon à présenter sensiblement un angle droit entre l'extrémité du brin du câble qui vient se loger dans la borne correspondante du disjoncteur électrique et la partie du brin qui passe au travers du trou du bloc de protection différentielle. Lorsque les câbles électriques sont relativement gros, ceci ne constitue pas une façon aisée et satisfaisante d'opérer pour effectuer les branchements électriques. Les flexions mécaniques à angle droit multiples des câbles électriques peuvent favoriser certaines détériorations des isolations électriques de ces câbles et favoriser aussi une mauvaise connexion électrique au niveau des bornes correspondantes du disjoncteur électrique.On the other hand, in such a known device, the electric cables which must pass through the hole of the differential protection block must be twisted so as to present substantially a right angle between the end of the strand of the cable which is received in the corresponding terminal of the electric circuit breaker and the part of the wire which passes through the hole of the differential protection block. When the electrical cables are relatively large, this is not an easy and satisfactory way of operating to make the electrical connections. Mechanical bending at multiple right angles to electrical cables can promote certain deterioration in the electrical insulation of these cables and also promote poor electrical connection at the corresponding terminals of the electrical circuit breaker.

On connaît aussi, par exemple au travers du document DE-A-3 338 961, un disjoncteur électrique comprenant un boîtier de forme générale sensiblement parallélépipédique, ce boîtier comprenant de façon intégrante une partie en protubérance qui inclut un tore magnétique à bobine. Les câbles électriques qui parviennent ou qui partent du disjoncteur doivent passer au travers d'un trou ménagé dans cette protubérance au centre du tore magnétique à bobine, de telle sorte que leurs extrémités soient connectées respectivement aux différentes bornes correspondantes du disjoncteur.There is also known, for example from document DE-A-3 338 961, an electrical circuit breaker comprising a generally substantially parallelepipedal housing, this housing integrally comprising a protruding part which includes a magnetic coil toroid. The electric cables which arrive or leave the circuit breaker must pass through a hole made in this protuberance in the center of the magnetic coil core, so that their ends are respectively connected to the different corresponding terminals of the circuit breaker.

Un inconvénient d'un tel dispositif réside dans le fait que le transformateur totalisateur constitué par le tore magnétique à bobine constitue un élément qui est intégré au boîtier unique du disjoncteur et qui n'est donc pas séparable du disjoncteur. Un autre inconvénient réside dans le fait que les bornes de connexion des câbles électriques qui doivent traverser le tore sont situées dans un logement ménagé entre la partie du boîtier qui inclut le tore et une autre partie du même boîtier qui inclut l'ensemble du mécanisme du disjoncteur. Une telle disposition n'est pas avantageuse du point de vue de la commodité de branchement des câbles sur ces bornes.A drawback of such a device lies in the fact that the totalizing transformer constituted by the magnetic coil toroid constitutes an element which is integrated into the single casing of the circuit breaker and which is therefore not separable from the circuit breaker. Another drawback resides in the fact that the connection terminals of the electric cables which must pass through the toroid are located in a housing formed between the part of the housing which includes the torus and another part of the same housing which includes the entire mechanism of the circuit breaker. Such an arrangement is not advantageous from the point of view of the convenience of connecting the cables to these terminals.

Dans la pratique, un tel dispositif ne peut être utilisé que pour un disjoncteur bipolaire c'est-à-dire un disjoncteur comprenant uniquement deux bornes de connexion d'entrée (et deux bornes de connexion de sortie) et seulement un câble incluant deux conducteurs électriques, une extrémité de chaque conducteur étant connectée à la borne correspondante et le câble électrique lui-même passant au travers du trou ménagé au centre du tore magnétique à bobine. Le fait que la partie du disjoncteur constituant la fonction de protection différentielle fasse corps d'une façon non séparable avec le reste du disjoncteur fait que cet ensemble ne peut pas être utilisé de façon optimisée dans une installation électrique complexe dans laquelle, en général, il n'est pas nécessaire que tous les disjoncteurs électriques comportent la fonction de protection différentielle.In practice, such a device can only be used for a two-pole circuit breaker, that is to say a circuit breaker comprising only two terminals of input connection (and two output connection terminals) and only one cable including two electrical conductors, one end of each conductor being connected to the corresponding terminal and the electrical cable itself passing through the hole in the center of the toroid magnetic coil. The fact that the part of the circuit breaker constituting the differential protection function forms an integral part with the rest of the circuit breaker means that this assembly cannot be used in an optimized manner in a complex electrical installation in which, in general, it it is not necessary that all electric circuit breakers include the differential protection function.

Un objet de la présente invention consiste à proposer un bloc de protection différentielle adaptable sur un disjoncteur ou un interrupteur électrique, dans lequel le fait d'associer un tel bloc de protection différentielle à un disjoncteur ou un interrupteur électrique particulier ne modifie pas la façon d'effectuer les différentes connexions électriques du disjoncteur ou de l'interrupteur électrique.An object of the present invention is to provide a differential protection block adaptable to a circuit breaker or an electrical switch, in which the fact of associating such a differential protection block with a particular circuit breaker or electrical switch does not modify the way of '' make the various electrical connections of the circuit breaker or electrical switch.

Un autre objet de la présente invention consiste à proposer un tel bloc de protection différentielle se présentant en outre sous une forme modulaire adaptée pour rendre aisée et fiable l'association avec le disjoncteur ou l'interrupteur électrique.Another object of the present invention consists in proposing such a differential protection block which is also presented in a modular form adapted to make the association with the circuit breaker or the electrical switch easy and reliable.

L'invention concerne donc un bloc de protection différentielle adaptable sur un disjoncteur électrique, ledit disjoncteur électrique étant de forme sensiblement parallélépipédique et incluant :

  • . un mécanisme de déclenchement du disjoncteur,
  • . une première face latérale qui inclut une rangée horizontale d'orifices de raccordement à des bornes
  • . une seconde face latérale, perpendiculaire à la première face ;
    ledit bloc incluant :
  • . un transformateur totalisateur comprenant un tore magnétique et un enroulement secondaire susceptible de délivrer un signal, et
  • . un relais de déclenchement commandé par ledit signal et servant à piloter le mécanisme de déclenchement du disjoncteur.
The invention therefore relates to a differential protection block adaptable to an electric circuit breaker, said electric circuit breaker being of substantially parallelepipedal shape and including:
  • . a circuit breaker tripping mechanism,
  • . a first side face which includes a horizontal row of terminal connection holes
  • . a second lateral face, perpendicular to the first face;
    said block including:
  • . a totalizing transformer comprising a magnetic toroid and a secondary winding capable of delivering a signal, and
  • . a trip relay controlled by said signal and used to control the trip mechanism of the circuit breaker.

Selon l'invention, le boîtier du bloc de protection différentielle comporte deux branches perpendiculaires dont chacune est de forme sensiblement parallélépipédique :

  • . une première branche qui vient prendre appui sur la première face du boîtier du disjoncteur, qui renferme le tore d'axe vertical et qui présente au moins un passage vertical de part en part de manière à créer un passage incontournable au travers du tore lors du raccordement des câbles aux bornes ; et
  • . une seconde branche qui vient prendre appui sur la seconde face du boîtier du disjoncteur et qui renferme le relais de déclenchement.
According to the invention, the housing of the differential protection block comprises two perpendicular branches, each of which is of substantially parallelepiped shape:
  • . a first branch which comes to bear on the first face of the circuit breaker housing, which encloses the toroid with a vertical axis and which has at least one vertical passage right through so as to create an inescapable passage through the torus during connection cables to the terminals; and
  • . a second branch which comes to bear on the second face of the circuit breaker box and which contains the trip relay.

Selon un mode de réalisation de l'invention, le boîtier peut être réalisé à partir de deux boîtiers séparés, chacun de forme sensiblement parallélépipédique, assemblés perpendiculairement, de sorte que la première branche puisse venir en appui sur la face latérale supérieure ou inférieure du disjoncteur.According to one embodiment of the invention, the box can be made from two separate boxes, each of substantially parallelepipedal shape, assembled perpendicularly, so that the first branch can come to bear on the upper or lower side face of the circuit breaker .

Selon un autre mode de réalisation de l'invention, le passage vertical est formé par plusieurs passages individuels disposés en correspondance avec les orifices.According to another embodiment of the invention, the vertical passage is formed by several individual passages arranged in correspondence with the orifices.

En outre, la première branche peut comporter des plages de raccordement disposées en saillie, adaptées à venir s'engager au travers des orifices dans les bornes, et destinées à assurer l'alimentation électrique du bloc de protection différentielle.In addition, the first branch may include connection pads arranged in projection, adapted to come to engage through orifices in the terminals, and intended to ensure the electrical supply of the differential protection block.

Ces objets, caractéristiques et avantages, ainsi que d'autres de la présente invention seront mieux compris lors de la description détaillée d'un exemple de réalisation qui va suivre, illustrée par les figures annexées parmi lesquelles :

  • la figure 1 est une vue en perspective, prise depuis l'avant et le dessous, d'un ensemble constitué par un disjoncteur classique et par un bloc de protection différentielle selon l'invention, ces deux éléments étant disposés dans une position écartée l'un de l'autre précédant leur accouplement ;
  • la figure 2 est une vue en perspective, prise depuis l'avant et le dessous, d'un autre mode de réalisation d'un bloc de protection différentielle selon l'invention ;
  • la figure 3 est une vue en perspective, prise depuis l'avant et le dessus, du bloc de protection différentielle de la figure 2 ;
  • la figure 4 est une vue en perspective d'une borne et de certains éléments connectés à cette borne, vue dans laquelle la borne est une borne classique incluse dans le disjoncteur représenté sur la figure 1 et un des éléments fait partie du bloc de protection différentielle selon l'invention représenté sur les figures précédentes ; et
  • la figure 5 est une vue en perspective d'une variante de réalisation d'un bloc de protection différentielle selon la présente invention, cette vue étant destinée à montrer simultanément deux possibilités différentes de montage pour une telle variante de réalisation du bloc de protection différentielle.
These objects, characteristics and advantages, as well as others of the present invention will be better understood during the detailed description of an exemplary embodiment which will follow, illustrated by the appended figures among which:
  • Figure 1 is a perspective view, taken from the front and bottom, of an assembly consisting of a conventional circuit breaker and a differential protection block according to the invention, these two elements being arranged in a position apart one of the other preceding their mating;
  • Figure 2 is a perspective view, taken from the front and bottom, of another embodiment of a differential protection block according to the invention;
  • Figure 3 is a perspective view, taken from the front and top, of the differential protection block of Figure 2;
  • FIG. 4 is a perspective view of a terminal and of certain elements connected to this terminal, view in which the terminal is a conventional terminal included in the circuit breaker shown in FIG. 1 and one of the elements forms part of the differential protection block according to the invention shown in the previous figures; and
  • Figure 5 is a perspective view of an alternative embodiment of a differential protection block according to the present invention, this view being intended to simultaneously show two different mounting possibilities for such an alternative embodiment of the differential protection block.

Sur la figure 1, on distingue de façon générale un disjoncteur électrique classique multipolaire 1. Ce disjoncteur 1 comprend classiquement un boîtier moulé dont la forme générale externe est celle d'un parallélépipède qui présente une face avant 2, une face latérale verticale gauche 3, une face latérale verticale droite 4 (non réellement visible sur la figure), une face latérale horizontale supérieure 5 (non réellement visible sur la figure), et une face latérale horizontale inférieure 6. Les faces latérales 3 et 4 sont parallèles l'une à l'autre et les faces latérales 5 et 6 sont parallèles l'une à l'autre. La face latérale 5 inclut des orifices par où peuvent être introduites des extrémités dénudées de câbles, et des bornes sont disposées à l'intérieur du boîtier à proximité de cette face latérale 5 et sont accessibles de l'extérieur de façon à pouvoir connecter et déconnecter les câbles avec ces bornes. De la même façon, la face latérale 6 inclut des orifices 7 par où peuvent être introduites des extrémités dénudées de câbles (non représentés), et des bornes (non visibles) sont disposées à l'intérieur du boîtier à proximité de cette face latérale 6 et sont accessibles de l'extérieur de façon à pouvoir connecter et déconnecter les câbles avec ces bornes.In FIG. 1, there is a general distinction between a conventional multi-pole electric circuit breaker 1. This circuit breaker 1 conventionally comprises a molded case whose general external shape is that of a parallelepiped which has a front face 2, a left vertical side face 3, a straight vertical side face 4 (not really visible in the figure), an upper horizontal side face 5 (not really visible in the figure), and a lower horizontal side face 6. The side faces 3 and 4 are parallel to one another the other and the side faces 5 and 6 are parallel to each other. The side face 5 includes holes through which bare ends of cables can be introduced, and terminals are arranged inside the housing near this side face 5 and are accessible from the outside so as to be able to connect and disconnect cables with these terminals. Likewise, the side face 6 includes orifices 7 through which bare ends of cables can be introduced (not shown), and terminals (not visible) are arranged inside the housing near this side face 6 and are accessible from the outside so that you can connect and disconnect the cables with these terminals.

Sur la face avant 2, sont ménagés des trous 8 qui permettent le passage d'un outil afin de permettre d'actionner les bornes logées dans le boîtier pour effectuer la connexion ou la déconnexion des câbles. Le nombre de pôles du disjoncteur 1 correspond au nombre d'orifices 7, au nombre de bornes correspondantes ainsi qu'au nombre de trous 8. Sur l'exemple représenté sur la figure 1, le disjoncteur 1 est un disjoncteur quadripolaire et par conséquent il est conçu pour recevoir quatre câbles électriques (visibles sur la figure 3) dont chacun est introduit au travers d'un des quatre orifices 7. Le orifices 7 sont de préférence disposés suivant une ligne parallèle à la face avant 2. Les câbles (non représentés sur la figure 1) sont naturellement présentés sensiblement perpendiculairement à la face horizontale 6, c'est-à-dire qu'ils sont présentés naturellement sensiblement perpendiculairement, de façon à ce que leur extrémité puisse être facilement introduite dans l'orifice correspondant 7. Lorsque des câbles d'arrivée sont ainsi branchés sur les bornes au niveau de la face supérieure 5 et lorsque d'autres câbles de départ sont ainsi branchés sur les bornes au niveau de la face inférieure 6, le disjoncteur 1 est connecté de façon opérationnelle et peut donc par exemple fonctionner pour disjoncter lorsque l'intensité de courant dans un ou plusieurs des câbles dépasse un seuil prédéterminé.On the front face 2, holes 8 are provided which allow the passage of a tool in order to allow the terminals housed in the housing to be actuated in order to connect or disconnect the cables. The number of poles of circuit breaker 1 corresponds to the number of orifices 7, the number of corresponding terminals as well as the number of holes 8. In the example shown in FIG. 1, circuit breaker 1 is a four-pole circuit breaker and therefore it is designed to receive four electric cables (visible in Figure 3) each of which is introduced through one of the four orifices 7. The orifices 7 are preferably arranged along a line parallel to the front face 2. The cables (not shown in FIG. 1) are naturally presented substantially perpendicular to the horizontal face 6, that is to say that they are naturally presented substantially perpendicularly, so that their ends can be easily inserted into the corresponding orifice 7. When incoming cables are thus connected to the terminals at the level of the upper face 5 and when other outgoing cables are thus connected to the terminals a u level of the lower face 6, the circuit breaker 1 is operatively connected and can therefore, for example, operate to trip when the current intensity in one or more of the cables exceeds a predetermined threshold.

La face avant 2 du disjoncteur 1 est munie d'une manette 9 d'ouverture et fermeture du disjoncteur 1.The front face 2 of the circuit breaker 1 is provided with a handle 9 for opening and closing the circuit breaker 1.

Le disjoncteur 1 peut être un disjoncteur classique monobloc multipolaire ou il peut être en fait constitué par plusieurs disjoncteurs monopolaires séparés disposés côte-à-côte de façon à constituer ensemble un seul disjoncteur multipolaires 1, comme cela est bien connu de l'art.The circuit breaker 1 can be a conventional one-piece multipole circuit breaker or it can in fact be constituted by several separate monopolar circuit breakers arranged side-by-side so as to constitute together a single multipole circuit breaker 1, as is well known in the art.

L'invention concerne plus particulièrement le bloc de protection différentielle 10 qui est représenté également sur la figure 1. Le bloc de protection différentielle 10 selon l'invention inclut, d'une façon classique, un transformateur totalisateur 11 (représenté de façon schématique par un ensemble de lignes en pointillés) comprenant un tore magnétique et un enroulement secondaire, et un relais de déclenchement (non visible sur la figure 1). Le transformateur totalisateur 11 et le relais de déclenchement sont logés à l'intérieur d'un boîtier 12.The invention relates more particularly to the differential protection block 10 which is also shown in FIG. 1. The differential protection block 10 according to the invention includes, in a conventional manner, a summing transformer 11 (represented schematically by a set of dotted lines) comprising a magnetic toroid and a secondary winding, and a trip relay (not visible in Figure 1). The summing transformer 11 and the trip relay are housed inside a housing 12.

L'une des particularités de l'invention concerne la forme particulière du boîtier 12, et une autre des particularités de l'invention concerne la forme particulière du transformateur totalisateur 11. Le boîtier 12 comporte deux branches perpendiculaires entre elles et reliées rigidement l'une à l'autre. La première branche 13 se présente sous la forme générale d'un parallélépipède et elle s'étend de façon générale horizontalement, c'est-à-dire que sa hauteur est inférieure à ses autres dimensions.One of the features of the invention relates to the particular shape of the housing 12, and another of the features of the invention relates to the particular shape of the totalizing transformer 11. The housing 12 has two branches perpendicular to each other and rigidly connected one to the other. The first branch 13 is in the general form of a parallelepiped and it extends generally horizontally, that is to say that its height is less than its other dimensions.

La première branche 13 comprend en autre une face horizontale supérieure 14 visible sur la figure 3. La première branche 13 renferme le transformateur totalisateur 11 dont le tore magnétique est disposé de façon à présenter un axe vertical. La première branche 13 comporte en outre au moins un passage vertical 15 qui la traverse de part en part et qui est situé à l'intérieur du tore magnétique du transformateur totalisateur 11. Dans l'exemple de réalisation représenté sur la figure 1, le transformateur totalisateur 11 présente une forme générale assimilable à un tore mais de forme allongée. Autrement dit, l'évidement central formé par le transformateur totalisateur 11 est un évidement d'axe vertical mais qui présente une forme ovale allongée, une forme oblongue ou une forme circulaire. D'une manière similaire, le passage vertical 15 ménagé de façon à traverser de part en part verticalement la première branche 13 présente une forme ovale allongée ou oblongue. Les dimensions du passage vertical 15 sont plus petites que les dimensions du trou central formé par le transformateur totalisateur 11. De cette façon, il est possible de loger le transformateur totalisateur 11 à l'intérieur de la première branche 13 autour des parois internes qui forment le passage vertical 15 de la branche 13.The first branch 13 further comprises an upper horizontal face 14 visible in FIG. 3. The first branch 13 contains the summing transformer 11 whose magnetic toroid is arranged so as to have a vertical axis. The first branch 13 further comprises at least one vertical passage 15 which passes right through it and which is located inside the magnetic core of the summing transformer 11. In the embodiment shown in FIG. 1, the transformer totalizer 11 has a general shape similar to a torus but elongated. In other words, the central recess formed by the summing transformer 11 is a recess with a vertical axis but which has an elongated oval shape, an oblong shape or a circular shape. Similarly, the vertical passage 15 formed so as to pass right through vertically the first branch 13 has an elongated or oblong oval shape. The dimensions of the vertical passage 15 are smaller than the dimensions of the central hole formed by the totalizing transformer 11. In this way, it is possible to accommodate the totalizing transformer 11 inside the first branch 13 around the internal walls which form the vertical passage 15 of the branch 13.

La seconde branche 17 se présente sous la forme générale d'un parallélépipède et elle s'étend de façon générale verticalement, c'est-à-dire que sa largeur est inférieure à ses autres dimensions.The second branch 17 is in the general form of a parallelepiped and it extends generally vertically, that is to say that its width is less than its other dimensions.

La seconde branche 17 renferme le relais de déclenchement (non visible sur les dessins) et est munie d'une manette 19 de réarmement. Les deux branches 13 et 17 sont reliées l'une à l'autre à angle droit, de telle sorte que la face horizontale supérieure 14 de la première branche 13 et la face latérale verticale gauche 18 de la seconde branche 17 forment un angle de 90°. La face latérale verticale 18 est destinée à venir se plaquer contre la face latérale verticale 4 du disjoncteur 1. Des formes en protubérance et en creux (non représentées) sont prévues au niveau des faces latérales 4 et 18 de façon à ce que, lorsque ces deux faces latérales 4 et 18 viennent se plaquer l'une sur l'autre ces formes assurent un positionnement relatif précis du bloc de protection différentielle 10 par rapport au disjoncteur 1. Un doigt de commande 20 (figure 2) est en outre prévu en saillie par rapport à la face latérale verticale 18, ce doigt étant, de façon classique, déplaçable de façon à commander une action de disjonction dans le disjoncteur 1 lorsque le relais de déclenchement inclus dans le bloc de protection différentielle 10 est excité.The second branch 17 contains the trigger relay (not visible in the drawings) and is provided with a reset handle 19. The two branches 13 and 17 are connected to each other at a right angle, so that the upper horizontal face 14 of the first branch 13 and the left vertical side face 18 of the second branch 17 form an angle of 90 °. The vertical lateral face 18 is intended to be pressed against the vertical lateral face 4 of the circuit breaker 1. Protruding and recessed shapes (not shown) are provided at the side faces 4 and 18 so that, when these two lateral faces 4 and 18 are pressed against one another these forms ensure precise relative positioning of the differential protection block 10 with respect to the circuit breaker 1. A control finger 20 (FIG. 2) is also provided for projecting relative to the vertical lateral face 18, this finger being, conventionally, movable so as to command a tripping action in the circuit breaker 1 when the tripping relay included in the differential protection block 10 is energized.

Le montage d'un bloc de protection différentielle 10 selon l'invention sur un disjoncteur classique 1 peut s'effectuer de la façon suivante. Au moment d'effectuer ce montage, il n'y a pas encore de câble de branché sur les bornes situées au niveau des évidements 7 de la face latérale horizontale 6 du disjoncteur 1. Dans cette condition, le bloc de protection différentielle 10 est amené contre le disjoncteur 1 de telle sorte que, d'une part sa face latérale verticale 18 vienne en contact avec la face latérale verticale opposée 4 du disjoncteur 1, et que d'autre part la face horizontale supérieure 14 de la première branche 13 vienne en contact avec la face horizontale opposée 6 du disjoncteur. Dans cette position ainsi obtenue, le passage vertical 15 de forme oblongue vient entourer sensiblement l'ensemble des orifices 7 ménagés au niveau de la surface horizontale inférieure 6 du disjoncteur 1. Il résulte de cela qu'il est alors possible d'amener un câble électrique en le faisant passer verticalement au travers du passage vertical 15 jusqu'à ce que son extrémité dénudée vienne s'enfiler dans l'orifice 7 correspondant afin de connecter électriquement cette extrémité dénudée à la borne correspondante logée dans le disjoncteur 1.The mounting of a differential protection block 10 according to the invention on a conventional circuit breaker 1 can be carried out as follows. At the time of this assembly, there is not yet a cable connected to the terminals located at the recesses 7 of the horizontal lateral face 6 of the circuit breaker 1. In this condition, the differential protection block 10 is brought against the circuit breaker 1 so that, on the one hand its vertical lateral face 18 comes into contact with the opposite vertical lateral face 4 of the circuit breaker 1, and that on the other hand the upper horizontal face 14 of the first branch 13 comes in contact with the opposite horizontal face 6 of the circuit breaker. In this position thus obtained, the vertical passage 15 of oblong shape substantially surrounds all of the orifices 7 formed at the level of the lower horizontal surface 6 of the circuit breaker 1. It follows from this that it is then possible to bring a cable electric by passing it vertically through the vertical passage 15 until its stripped end comes to thread into the corresponding orifice 7 in order to electrically connect this stripped end to the corresponding terminal housed in the circuit breaker 1.

En d'autres termes, il devient impossible de raccorder les câbles 24 aux bornes du disjoncteur 1 sans que les câbles 24 ne passent au travers du passage vertical 15, donc au travers du tore.In other words, it becomes impossible to connect the cables 24 to the terminals of the circuit breaker 1 without the cables 24 passing through the vertical passage 15, therefore through the toroid.

Dans l'exemple représenté sur la figure 1, on peut ainsi connecter quatre câbles dans les quatre bornes situées en correspondance avec les quatre orifice 7, ces quatre câbles passant donc ensemble au travers du passage vertical 15 et au travers du tore magnétique du transformateur totalisateur 11 logé dans la première branche 13 autour du passage vertical 15. Il résulte de cela que les quatre câbles constituent ensemble un enroulement primaire et que l'enroulement secondaire disposé autour du tore magnétique du transformateur totalisateur 11 permet de produire un signal électrique lorsque la somme des courants électriques circulant au travers des quatre câbles n'est pas égale à zéro, comme cela est bien connu en soi.In the example shown in FIG. 1, it is thus possible to connect four cables in the four terminals situated in correspondence with the four orifice 7, these four cables therefore passing together through the vertical passage 15 and through the magnetic toroid of the totalizing transformer 11 housed in the first branch 13 around the vertical passage 15. It follows from this that the four cables together constitute a primary winding and that the secondary winding arranged around the magnetic core of the summing transformer 11 makes it possible to produce an electric signal when the sum of the electric currents flowing through four cables is not zero, as is well known per se.

Bien entendu, l'enroulement secondaire du transformateur totalisateur 11 est connecté électriquement au relais de déclenchement logé dans la seconde branche 17 de telle sorte que l'apparition d'un signal électrique aux bornes de cet enroulement secondaire puisse actionner, directement ou indirectement, le relais de déclenchement, d'une façon classique, afin que ce relais de déclenchement puisse à son tour commander, de façon classique, le déclenchement du disjoncteur 1 par l'intermédiaire du doigt de commande 20.Of course, the secondary winding of the summing transformer 11 is electrically connected to the trip relay housed in the second branch 17 so that the appearance of an electrical signal at the terminals of this secondary winding can actuate, directly or indirectly, the tripping relay, in a conventional manner, so that this tripping relay can in turn control, in a conventional manner, the tripping of the circuit breaker 1 via the control finger 20.

A l'intérieur du boîtier 12 du bloc de protection différentielle 10 selon l'invention, il est possible d'inclure un ensemble d'éléments électriques, électroniques et/ou électromécaniques permettant d'assurer, de façon connue, la fonction de protection différentielle. Cependant, dans un grand nombre de cas, ces éléments électriques, électroniques, et/ou électromécaniques demandent pour fonctionner une alimentation électrique. Pour obtenir une telle alimentation électrique dans le bloc de protection différentielle 10 selon la présente invention, ce bloc de protection différentielle 10 comporte en outre, comme on peut le voir sur les figures 1 à 4, des plages 22 qui font saillie vers le haut à partir de la face horizontale supérieure 14 de la première branche 13. Ces plages 22 sont disposées de façon à venir s'engager au travers des orifices 7 correspondants ménagés au niveau de la face horizontale inférieure 6 du disjoncteur 1, lorsque le bloc de protection différentielle 10 vient s'accoupler au disjoncteur 1.Inside the housing 12 of the differential protection block 10 according to the invention, it is possible to include a set of electrical, electronic and / or electromechanical elements making it possible, in known manner, to perform the differential protection function . However, in a large number of cases, these electrical, electronic, and / or electromechanical elements require to operate an electrical supply. To obtain such a power supply in the differential protection block 10 according to the present invention, this differential protection block 10 further comprises, as can be seen in FIGS. 1 to 4, pads 22 which project upwards at starting from the upper horizontal face 14 of the first branch 13. These areas 22 are arranged so as to engage through corresponding orifices 7 formed at the level of the lower horizontal face 6 of the circuit breaker 1, when the differential protection block 10 is coupled to circuit breaker 1.

Sur la figure 4, on a représenté une borne 23 qui est normalement logée à l'intérieur du disjoncteur 1 en face d'un orifice 7 correspondant. On a représenté également un câble 24 qui est normalement passé au travers du passage vertical 15 du bloc de protection différentielle 10 et dont l'extrémité dénudée 25 vient se loger dans la borne 23 pour y être connectée. On voit également que, lors de l'accouplement du bloc de protection différentielle 10 avec le disjoncteur 1, la plage 22 vient s'enfiler automatiquement dans le logement de la borne 23, et ainsi la connexion en dérivation décrite précédemment peut être facilement obtenue lors de cet accouplement.In FIG. 4, a terminal 23 is shown which is normally housed inside the circuit breaker 1 opposite a corresponding orifice 7. There is also shown a cable 24 which is normally passed through the vertical passage 15 of the differential protection block 10 and the stripped end 25 of which is housed in the terminal 23 to be connected to it. It can also be seen that, when the differential protection block 10 is coupled with the circuit breaker 1, the track 22 is automatically threaded into the housing of the terminal 23, and thus the branch connection described above can be easily obtained during of this coupling.

Sur les figures 2 et 3, le bloc de protection différentielle est configuré selon une variante de réalisation par rapport au bloc de protection différentielle de la figure 1. Cette variante de réalisation consiste en ce que le passage vertical 15 du bloc de protection différentielle de la figure 1 est remplacé par un certain nombre de passages verticaux 15A, 15B, 15C, 15D qui sont disposés en correspondance avec les orifices 7 du disjoncteur 1. Ainsi, chaque câble 24 passe dans un passage vertical individuel et le câble est mieux guidé dans un tel passage individuel. Le transformateur totalisateur 11 entoure l'ensemble formé par ces différents passages verticaux 15A à 15D, comme pour le premier mode de réalisation de la figure 1.In FIGS. 2 and 3, the differential protection block is configured according to an alternative embodiment with respect to the differential protection block in FIG. 1. This alternative embodiment consists in that the vertical passage 15 of the block differential protection of Figure 1 is replaced by a number of vertical passages 15A, 15B, 15C, 15D which are arranged in correspondence with the openings 7 of the circuit breaker 1. Thus, each cable 24 passes in an individual vertical passage and the cable is better guided in such an individual passage. The summing transformer 11 surrounds the assembly formed by these different vertical passages 15A to 15D, as for the first embodiment of FIG. 1.

Sur la figure 5, on a représenté une autre variante de réalisation de l'invention dans laquelle le boîtier 12 du bloc de protection différentielle 10 n'est pas formé en une seule pièce, comme pour les modes de réalisation des figures 1 à 3, mais il est formé en deux pièces séparées 12A et 12B. Le boîtier 12A correspond sensiblement à la branche 17 du premier mode de réalisation et le boîtier 12B correspond sensiblement à la branche 13 du premier mode de réalisation. Des éléments de fixation amovible sont prévus sur les deux boîtiers séparés 12A et 12B de façon à ce que le boîtier 12B puisse être fixé indifféremment soit sur la face supérieure 30 du boîtier 12A (comme cela est représenté sur la partie gauche de la figure 5), soit sur la face inférieure 31 du boîtier 12A (comme cela est représenté sur la partie droite de la figure 5). Cette variante de réalisation permet de pouvoir utiliser les mêmes pièces formant le boîtier 12 du bloc de protection différentielle selon l'invention pour soit constituer un bloc de protection différentielle destiné à venir mesurer les courants différentiels au niveau des câbles d'arrivée d'un disjoncteur, soit constituer un bloc de protection différentielle destiné à venir mesurer les courants différentiels au niveau du câble de départ du disjoncteur.FIG. 5 shows another alternative embodiment of the invention in which the housing 12 of the differential protection block 10 is not formed in one piece, as for the embodiments of FIGS. 1 to 3, but it is formed in two separate pieces 12A and 12B. The housing 12A corresponds substantially to the branch 17 of the first embodiment and the housing 12B corresponds substantially to the branch 13 of the first embodiment. Removable fixing elements are provided on the two separate housings 12A and 12B so that the housing 12B can be fixed either on the upper face 30 of the housing 12A (as shown on the left side of FIG. 5) , or on the underside 31 of the housing 12A (as shown on the right side of FIG. 5). This alternative embodiment makes it possible to be able to use the same parts forming the housing 12 of the differential protection block according to the invention to either constitute a differential protection block intended to come to measure the differential currents at the level of the incoming cables of a circuit breaker. , or constitute a differential protection block intended to come and measure the differential currents at the level of the circuit breaker feeder cable.

Claims (4)

Bloc de protection différentielle (10) adaptable sur un disjoncteur électrique (1), ledit disjoncteur électrique (1) étant de forme sensiblement parallélépipédique et incluant : . un mécanisme de déclenchement du disjoncteur, . une première face latérale (6) incluant une rangée horizontale d'orifices (7) de raccordement à des bornes, et . une seconde face (4) latérale, perpendiculaire à la première face (6) ;    ledit bloc (10) incluant, dans un boîtier (12) : . un transformateur totalisateur (11) comprenant un tore magnétique et un enroulement secondaire susceptible de délivrer un signal et . un relais de déclenchement commandé par ledit signal et servant à piloter le mécanisme de déclenchement du disjoncteur (1) ;    caractérisé en ce que :
   ledit boîtier (12) du bloc de protection différentielle comporte deux branches (13, 17) perpendiculaires dont chacune est de forme sensiblement parallélépipédique ;
   une première branche (13) qui vient prendre appui sur ladite première face (6) du boîtier du disjoncteur, qui renferme le tore d'axe vertical et qui présente au moins un passage vertical de part en part (15) de manière à créer un passage incontournable au travers dudit tore lors du raccordement de câbles (24) aux bornes ; et
   une seconde branche (17) qui vient prendre appui sur la seconde face (4) du boîtier du disjoncteur et qui renferme le relais de déclenchement.Differential protection block (10) adaptable to an electric circuit breaker (1), said electric circuit breaker (1) being of substantially parallelepiped shape and including: . a circuit breaker tripping mechanism, . a first lateral face (6) including a horizontal row of orifices (7) for connection to terminals, and . a second side face (4), perpendicular to the first face (6); said block (10) including, in a housing (12): . a totalizing transformer (11) comprising a magnetic toroid and a secondary winding capable of delivering a signal and . a trip relay controlled by said signal and used to control the trip mechanism of the circuit breaker (1); characterized in that:
said housing (12) of the differential protection block comprises two perpendicular branches (13, 17) each of which is of substantially parallelepiped shape;
a first branch (13) which comes to bear on said first face (6) of the circuit breaker housing, which encloses the toroid with a vertical axis and which has at least one vertical passage right through (15) so as to create a inescapable passage through said torus when connecting cables (24) to the terminals; and
a second branch (17) which comes to bear on the second face (4) of the circuit breaker box and which contains the trip relay. Bloc de protection différentielle selon la revendication 1, caractérisé en ce que la première branche (13) et la seconde branche (17) sont formées par des boîtiers séparés (12B, 12A) de façon à ce que le boîtier séparé (12B) constituant la première branche puisse être fixé soit sur une face supérieure (30) du boîtier (12A) constituant la seconde branche soit sur une face inférieure (31) du boîtier (12A) constituant la seconde branche.Differential protection unit according to claim 1, characterized in that the first branch (13) and the second branch (17) are formed by separate housings (12B, 12A) so that the separate housing (12B) constituting the first branch can be fixed either on an upper face (30) of the housing (12A) constituting the second branch or on a lower face (31) of the housing (12A) constituting the second branch. Bloc de protection différentielle selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit passage vertical (15) est formé par plusieurs passages (15A à 15D) disposés en correspondance avec les orifices (7) du disjoncteur (1).Differential protection block according to any one of the preceding claims, characterized in that said vertical passage (15) is formed by several passages (15A to 15D) arranged in correspondence with the orifices (7) of the circuit breaker (1). Bloc de protection différentielle selon l'une quelconque des revendications précédentes, caractérisé en ce que la première branche comporte en outre des plages de raccordement disposées en saillie, adaptées à venir s'engager au travers des orifices dans les bornes, et destinées à assurer l'alimentation électrique du bloc de protection différentielle.Differential protection block according to any one of the preceding claims, characterized in that the first branch further comprises connection pads arranged in projection, adapted to engage through holes in the terminals, and intended to ensure the power supply to the differential protection unit.
EP19940410091 1993-10-18 1994-10-13 Differential protection block with cable passage Expired - Lifetime EP0649158B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9312479 1993-10-18
FR9312479A FR2711449B1 (en) 1993-10-18 1993-10-18 Differential protection block with cable passage.

Publications (2)

Publication Number Publication Date
EP0649158A1 true EP0649158A1 (en) 1995-04-19
EP0649158B1 EP0649158B1 (en) 1999-09-29

Family

ID=9452017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940410091 Expired - Lifetime EP0649158B1 (en) 1993-10-18 1994-10-13 Differential protection block with cable passage

Country Status (4)

Country Link
EP (1) EP0649158B1 (en)
DE (1) DE69420923T2 (en)
ES (1) ES2139055T3 (en)
FR (1) FR2711449B1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806784A2 (en) * 1996-05-07 1997-11-12 Felten & Guilleaume Austria Ag Switchgear with movable connection lines
FR2779269A1 (en) * 1998-05-29 1999-12-03 Hager Electro Coupling device for two attached modular electrical elements
WO2001045128A1 (en) * 1999-12-16 2001-06-21 Abb Service S.R.L. Ground fault circuit breaker
EP1480243A1 (en) * 2003-05-20 2004-11-24 ABB Service S.r.l An electrical device for protection against residual currents
EP1770739A1 (en) * 2005-09-29 2007-04-04 Hager-Electro SAS Differential unit with inclined trajectory sliding drawer
FR2902924A1 (en) * 2006-06-26 2007-12-28 Schneider Electric Ind Sas Modular electrical device i.e. monoblock modular tetra polar differential circuit breaker, for protecting electrical installation, has differential module and bipolar outage modules connected to each other at final assembling of device
WO2008145207A1 (en) * 2007-05-30 2008-12-04 Tripco Limited A residual current device
EP2019407A1 (en) * 2007-07-26 2009-01-28 BTICINO S.p.A. Residual current device for an electric circuit breaker
WO2009089993A1 (en) * 2008-01-17 2009-07-23 Siemens Aktiengesellschaft Module mechanically linkable to a circuit breaker
CN104220136A (en) * 2012-03-06 2014-12-17 桥驱产品有限责任公司 Sorting device for sorting playing cards

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10120677B4 (en) * 2001-04-27 2010-11-04 Siemens Ag Modular rail-mounted device
CN106128867B (en) * 2016-08-05 2018-10-12 梅兰日兰电气集团（苏州）有限公司 A kind of plastic housing leakage circuit breakers

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FR2373145A1 (en) * 1976-12-01 1978-06-30 Licentia Gmbh Combined fault current and multi-pole line protector - has summation transformer in multi-section housing with cut=out mechanism
DE7813854U1 (en) * 1978-05-08 1979-10-11 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Residual current circuit breaker combined with a multi-pole miniature circuit breaker
EP0008026A1 (en) * 1978-08-04 1980-02-20 Heinrich Kopp GmbH &amp; Co. KG Electric full-protection circuit breaker
DE3338961A1 (en) * 1983-10-27 1985-05-09 Brown, Boveri & Cie Ag, 6800 Mannheim Installation protective circuit breaker

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FR2373145A1 (en) * 1976-12-01 1978-06-30 Licentia Gmbh Combined fault current and multi-pole line protector - has summation transformer in multi-section housing with cut=out mechanism
DE7813854U1 (en) * 1978-05-08 1979-10-11 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Residual current circuit breaker combined with a multi-pole miniature circuit breaker
EP0008026A1 (en) * 1978-08-04 1980-02-20 Heinrich Kopp GmbH &amp; Co. KG Electric full-protection circuit breaker
DE3338961A1 (en) * 1983-10-27 1985-05-09 Brown, Boveri & Cie Ag, 6800 Mannheim Installation protective circuit breaker

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806784A2 (en) * 1996-05-07 1997-11-12 Felten & Guilleaume Austria Ag Switchgear with movable connection lines
EP0806784A3 (en) * 1996-05-07 1998-05-20 Felten & Guilleaume Austria Ag Switchgear with movable connection lines
FR2779269A1 (en) * 1998-05-29 1999-12-03 Hager Electro Coupling device for two attached modular electrical elements
WO1999063563A1 (en) * 1998-05-29 1999-12-09 Hager Electro Device for coupling two attached modular electrical elements
WO2001045128A1 (en) * 1999-12-16 2001-06-21 Abb Service S.R.L. Ground fault circuit breaker
EP1480243A1 (en) * 2003-05-20 2004-11-24 ABB Service S.r.l An electrical device for protection against residual currents
EP1770739A1 (en) * 2005-09-29 2007-04-04 Hager-Electro SAS Differential unit with inclined trajectory sliding drawer
EP1873808A1 (en) * 2006-06-26 2008-01-02 Schneider Electric Industries Sas Modular electrical device providing at least two electrical functions, such as a differential circuit breaker
FR2902924A1 (en) * 2006-06-26 2007-12-28 Schneider Electric Ind Sas Modular electrical device i.e. monoblock modular tetra polar differential circuit breaker, for protecting electrical installation, has differential module and bipolar outage modules connected to each other at final assembling of device
CN101097819B (en) * 2006-06-26 2012-05-30 施耐德电器工业公司 Modular electrical device providing at least two electrical functions, such as a differential circuit breaker
WO2008145207A1 (en) * 2007-05-30 2008-12-04 Tripco Limited A residual current device
EP2019407A1 (en) * 2007-07-26 2009-01-28 BTICINO S.p.A. Residual current device for an electric circuit breaker
RU2464667C2 (en) * 2007-07-26 2012-10-20 Бтичино С.П.А. Device of protection against residual currents for power circuit breaker
CN101354988B (en) * 2007-07-26 2012-11-21 布蒂克诺公司 Residual current device for an electric circuit breaker
WO2009089993A1 (en) * 2008-01-17 2009-07-23 Siemens Aktiengesellschaft Module mechanically linkable to a circuit breaker
CN104220136A (en) * 2012-03-06 2014-12-17 桥驱产品有限责任公司 Sorting device for sorting playing cards
CN104220136B (en) * 2012-03-06 2017-06-20 桥驱产品有限责任公司 Sorting arrangement for sorting playing cards

Also Published As

Publication number Publication date
DE69420923T2 (en) 2000-05-04
EP0649158B1 (en) 1999-09-29
FR2711449B1 (en) 1995-12-22
FR2711449A1 (en) 1995-04-28
DE69420923D1 (en) 1999-11-04
ES2139055T3 (en) 2000-02-01

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