EP0456585B1 - Single-pole, neutral differential circuit breaker - Google Patents

Single-pole, neutral differential circuit breaker Download PDF

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Publication number
EP0456585B1
EP0456585B1 EP91420140A EP91420140A EP0456585B1 EP 0456585 B1 EP0456585 B1 EP 0456585B1 EP 91420140 A EP91420140 A EP 91420140A EP 91420140 A EP91420140 A EP 91420140A EP 0456585 B1 EP0456585 B1 EP 0456585B1
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EP
European Patent Office
Prior art keywords
neutral
phase
circuit
circuit breaker
compartment
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP91420140A
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German (de)
French (fr)
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EP0456585A1 (en
Inventor
Michel Lazareth
Noel Lecorre
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Merlin Gerin SA
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Merlin Gerin SA
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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
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H2089/005—Multi-purpose combinations, e.g. LS/DI, LS/FI, of normal protective circuit breakers with known other forms of protection, e.g. earthfaults, differential, unbalance

Definitions

  • a known differential circuit breaker of the kind mentioned (EP-A-196,241) comprises a one-piece housing containing the circuit breaker part with neutral cut and the differential protection part, the latter being arranged on the side of the neutral contacts.
  • the neutral circuit is also interposed between the phase circuit and the protection part differential, which facilitates the passage of the connection conductors for the insertion of the primary phase and neutral windings in the respective phase and neutral circuits.
  • the connection of the primary neutral winding presents no difficulty, since the parts to be connected are adjacent.
  • the phase circuit is interrupted for the insertion of the primary phase winding between the free end of the bimetallic strip and the coil of the thermomagnetic trip device, and the corresponding connection conductors pass through the volume delimited by the circuit of neutral without interfering with it.
  • Such an arrangement makes it possible to obtain good dielectric strength of the circuit breaker, but requires positioning to the left of the differential part.
  • it is the phase circuit which is interposed between the neutral circuit and the differential part, with compulsory passage of the internal conductors for connecting the primary neutral winding through the volume delimited by the phase circuit.
  • the filling of this volume is more important than that of the neutral volume without a thermomagnetic trip device. It is then necessary to find suitable places in the separation wall for the orifices for passage of the internal neutral conductors, and to avoid any contact with the phase circuit in order to meet the dielectric requirements of the differential circuit breaker. This results in a dispersion of the passage openings in the wall, and difficulties in electrical connection of the differential part.
  • the object of the invention is to improve the electrical connection of the primary windings of a unipolar and neutral differential switch with a one-piece housing.
  • the differential circuit breaker according to the invention is characterized in that the phase circuit is adjacent to the second compartment, one of the connection conductors of the primary phase winding being connected to the contact range of the nearest phase terminal, and the other conductor being connected to the rear end of the coil opposite the fixed phase contact, and that the orifices are located in the interval arranged between said phase terminal, and the exhaust zone of the first arc extinguishing chamber.
  • the primary phase winding is connected by interrupting the connecting conductor between the coil and the terminal contact area, which avoids the use of additional connection parts. This connection presents no difficulty since the parts to be connected are adjacent.
  • the differential circuit breaker comprises a cut neutral circuit housed to the left of the phase circuit in the first compartment, and having a pair of separable neutral contacts.
  • the phase circuit is then arranged between the neutral circuit and the second compartment, with internal neutral conductors passing through the volume of the phase circuit, one of the connection conductors of the primary neutral winding being connected to the contact range of the nearest neutral terminal, and the other conductor being connected to a connecting conductor with the fixed neutral contact.
  • the passage openings in said circuit breaker interval extend in a vertical plane perpendicular to the wall and to the bottom of the housing.
  • the differential circuit breaker comprises a passing neutral circuit, disposed in the second compartment.
  • a single-pole and neutral differential circuit breaker 10 is housed in an insulating casing 12, subdivided by a central wall 14 of separation into two adjacent parts, comprising a first circuit breaker compartment and a second differential protection compartment.
  • the first circuit breaker compartment 16 comprises a phase circuit 20 and a neutral circuit 22 separated from each other by an insulating partition 24, and connected respectively to a first pair of phase terminals 26, 28 and a second pair of neutral terminals 30.32.
  • the upstream terminals 26.30 are juxtaposed on the same narrow side face 31 of the housing 12, while the downstream terminals 28.32 are arranged side by side on the other opposite face 33.
  • the phase circuit 20 ( Figures 1 and 4) includes a movable contact 34 electrically connected to the upstream terminal 26 by a trip device. bimetallic strip 36, and a fixed contact 38 connected to an anterior end 39 of a coil 40 for exciting an electromagnetic trip device 42.
  • a first arc extinguishing chamber 44 is disposed between the electromagnetic trip device 42 and the bottom of the housing 12, and comprises a packet of sheets for deionizing the arc drawn between the contacts 34, 38.
  • the neutral circuit 22 ( Figures 1 and 5) has a fixed contact 46, a movable contact 48 electrically connected to the terminal 30, and a second arc extinguishing chamber 50.
  • the circuit neutral 22 is located to the left of phase circuit 20 and does not have a trigger.
  • the two movable contacts 34, 48 are actuated by a first mechanism 52 with manual control by a lever 53 and automatic by the thermal bimetal trigger 36 and the electromagnetic trigger 42 with coil 40.
  • the first mechanism 52 can be of the type described in the document FR-A-2.616.583.
  • the second compartment 18 ( Figures 1 and 3) is located to the right of the first compartment 16, and contains a differential transformer 54 and a trigger relay 56 cooperating with a second mechanism 58 with handle 60 for reset.
  • the second mechanism 58 is interconnected, with the first mechanism 52 by means of mechanical connections (not shown) authorizing a tripping action of the circuit breaker 10 when a differential tripping order is issued by the relay 56, and an action of automatic resetting of the relay 56 after a tripping operation of the circuit breaker 10.
  • the second mechanism 58 may be of the type described in the document FR-A-2.628.262.
  • the differential transformer 54 ( Figures 1 and 6) comprises a magnetic toroid 62 carrying a primary phase winding 64, a primary neutral winding 66, and a secondary measurement winding (not shown), the latter being connected. to trip relay 56.
  • An earth fault results in an imbalance between the currents flowing through the primary windings 64,66 and generates a secondary current in the measurement winding for the supply of relay 56.
  • the orifices 76,78; 80.82 lie substantially in the same vertical connection plane extending perpendicular to the wall 14 and to the bottom of the housing 12, being arranged in the interval 83 between the terminals 28.32, and the rear exhaust zone of the two arc extinguishing chambers 44, 50.
  • the primary phase winding 64 is inserted in series into the phase circuit 20 by interrupting the connection between terminal 28 and the rear end 84 of the coil 40, located opposite the end 39 associated with the contact. fixed 38.
  • the connection conductor 68 passing through the orifice 76 is connected in the first compartment 16 at the end 39 of the coil 40, and the other connection conductor 70 passing through the orifice 78 is connected to the contact pad phase terminal 28 ( Figures 1 and 4).
  • the primary neutral winding 66 is inserted in series into the neutral circuit 22 by interrupting the connection between the fixed neutral contact 46 and the neutral terminal 32. ( Figures 1 and 5).
  • the connection conductor 72 passing through the orifice 80 is connected to an extension of the fixed contact 46, and the other connection conductor 74 is connected to the contact pad of the neutral terminal 32.
  • connection conductors 72, 74, of the primary neutral winding 66 pass through the partition 24 which subdivides the first compartment 16 circuit breaker.
  • the length of these conductors 72.74 is greater than that of the other connection conductors 68.70 of the primary phase winding 64.
  • the volume delimited by the phase circuit 20 is crossed by the conductors 72.74 in the lower part of the housing 12, that is to say in a place devoid of active parts of the phase circuit 20.
  • the four passage openings 76, 78, 80, 82 are superimposed and staggered at regular intervals in said vertical connection plane, so to facilitate the electrical connection of the primary windings 64,66.
  • the differential circuit breaker 100 has a passing neutral circuit, that is to say not cut.
  • the first compartment 160 only comprises the phase circuit 20 associated with the lever 53 and with the first pair of phase terminals 26, 28.
  • the second compartment 180 contains the differential part and the passing neutral circuit, connected to the second pair of neutral terminals 130, 132.
  • the wall 14 has only the two upper openings 78.80 for the conductors 68.70 for connection of the primary phase winding 64. Interruption of the phase circuit 20 for the insertion of the primary winding phase 64 is carried out in the same manner as in FIGS. 1 and 4.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Abstract

A single-pole, neutral differential circuit-breaker (10) with one-piece insulating case (12) includes a first circuit-breaker compartment (16) and a second compartment (18) with differential protection, and which is situated to the right of and separated from the phase circuit (20) by a separation wall (14). The primary phase winding (64) of the differential transformer (54) is branched to the contact area of the phase terminal (26) by a first connecting conductor (70), and to the aft end of the coil (40) of the electromagnetic trip by a second conductor (68). The two conductors (68, 70) pass through the wall (14) via orifices (76, 78) made in a gap between the terminal (26) and the exhaust zone of the arc-extinction chamber (44). <IMAGE>

Description

L'invention est relative à un disjoncteur différentiel unipolaire et neutre logé dans un boîtier isolant, subdivisé par une paroi de séparation en deux parties adjacentes, renfermant:

  • un premier compartiment disjoncteur comportant un circuit de phase raccordé à une première paire de bornes de phase disposées sur deux faces étroites opposées du boîtier, une paire de contacts de phase fixe et mobile, associée à une première chambre d'extinction d'arc, et un premier mécanisme de commande manuelle à manette et automatique par coopération avec un déclencheur thermique à bilame et un déclencheur électromagnétique à bobine d'excitation;
  • un deuxième compartiment à protection différentielle comprenant un transformateur différentiel à tore magnétique portant un enroulement primaire de phase, un enroulement primaire de neutre, et un enroulement secondaire de mesure connecté à un relais électromagnétique de déclenchement coopérant mécaniquement avec le premier mécanisme par l'intermédiaire d'un deuxième mécanisme déclencheur,
  • un circuit de neutre raccordé à une deuxième paire de bornes de neutre,
  • et des orifices ménagés dans la paroi de séparation des deux compartiments pour le passage de deux conducteurs internes de raccordement autorisant l'insertion de l'enroulement primaire de phase dans le circuit de phase.
The invention relates to a unipolar and neutral differential circuit breaker housed in an insulating housing, subdivided by a partition wall into two adjacent parts, containing:
  • a first circuit breaker compartment comprising a phase circuit connected to a first pair of phase terminals arranged on two opposite narrow faces of the housing, a pair of fixed and mobile phase contacts, associated with a first arc extinguishing chamber, and a first manual and automatic control mechanism by cooperation with a bimetal thermal trip device and an electromagnetic trip device with excitation coil;
  • a second differential protection compartment comprising a differential transformer with magnetic core carrying a primary phase winding, a primary neutral winding, and a secondary measurement winding connected to an electromagnetic tripping relay mechanically cooperating with the first mechanism via '' a second trigger mechanism,
  • a neutral circuit connected to a second pair of neutral terminals,
  • and orifices provided in the partition wall of the two compartments for the passage of two internal connection conductors allowing the insertion of the primary phase winding into the phase circuit.

Un disjoncteur différentiel connu du genre mentionné (EP-A-196.241) comporte un boîtier monobloc renfermant la partie disjoncteur à neutre coupé et la partie protection différentielle, cette dernière étant disposée du côté des contacts de neutre. Le circuit de neutre est aussi intercalé entre le circuit de phase, et la partie protection différentielle, ce qui facilite le passage des conducteurs de raccordement pour l'insertion des enroulements primaires de phase et neutre dans les circuits respectifs de phase et de neutre. Le raccordement de l'enroulement primaire de neutre ne présente aucune difficulté, car les parties à raccorder sont adjacentes. L'interruption du circuit de phase pour l'insertion de l'enroulement primaire de phase s'effectue entre l'extrémité libre de la bilame et la bobine du déclencheur magnétothermique, et les conducteurs de raccordement correspondants traversent le volume délimité par le circuit de neutre sans interférer avec ce dernier. Un tel agencement permet d'obtenir une bonne tenue diélectrique du disjoncteur, mais impose un positionnement à gauche de la partie différentielle.A known differential circuit breaker of the kind mentioned (EP-A-196,241) comprises a one-piece housing containing the circuit breaker part with neutral cut and the differential protection part, the latter being arranged on the side of the neutral contacts. The neutral circuit is also interposed between the phase circuit and the protection part differential, which facilitates the passage of the connection conductors for the insertion of the primary phase and neutral windings in the respective phase and neutral circuits. The connection of the primary neutral winding presents no difficulty, since the parts to be connected are adjacent. The phase circuit is interrupted for the insertion of the primary phase winding between the free end of the bimetallic strip and the coil of the thermomagnetic trip device, and the corresponding connection conductors pass through the volume delimited by the circuit of neutral without interfering with it. Such an arrangement makes it possible to obtain good dielectric strength of the circuit breaker, but requires positioning to the left of the differential part.

Les usages dans certains pays recommandent le montage à droite de la partie différentielle. Dans ce cas, c'est le circuit de phase qui est intercalé entre le circuit de neutre et la partie différentielle, avec passage obligatoire des conducteurs internes de raccordement de l'enroulement primaire de neutre à travers le volume délimité par le circuit de phase. Le remplissage de ce volume est plus important que celui du volume de neutre dépourvu de déclencheur magnétothermique. Il faut alors trouver des endroits adéquats dans la paroi de séparation pour les orifices de passage des conducteurs internes de neutre, et éviter tout contact avec le circuit de phase pour satisfaire aux exigences diélectriques du disjoncteur différentiel. Il en résulte une dispersion des orifices de passage dans la paroi, et des difficultés de raccordement électrique de la partie différentielle.The uses in certain countries recommend the installation on the right of the differential part. In this case, it is the phase circuit which is interposed between the neutral circuit and the differential part, with compulsory passage of the internal conductors for connecting the primary neutral winding through the volume delimited by the phase circuit. The filling of this volume is more important than that of the neutral volume without a thermomagnetic trip device. It is then necessary to find suitable places in the separation wall for the orifices for passage of the internal neutral conductors, and to avoid any contact with the phase circuit in order to meet the dielectric requirements of the differential circuit breaker. This results in a dispersion of the passage openings in the wall, and difficulties in electrical connection of the differential part.

L'objet de l'invention consiste à améliorer le raccordement électrique des enroulements primaires d'un interrupteur différentiel unipolaire et neutre à boîtier monobloc.The object of the invention is to improve the electrical connection of the primary windings of a unipolar and neutral differential switch with a one-piece housing.

Le disjoncteur différentiel selon l'invention est caractérisé en ce que le circuit de phase est adjacent au deuxième compartiment, l'un des conducteurs de raccordement de l'enroulement primaire de phase étant branché à la plage de contact de la borne de phase la plus proche, et l'autre conducteur étant connecté à l'extrémité postérieure de la bobine à l'opposé du contact fixe de phase, et que les orifices sont situés dans l'intervalle agencé entre ladite borne de phase, et la zone d'échappement de la première chambre d'extinction d'arc.The differential circuit breaker according to the invention is characterized in that the phase circuit is adjacent to the second compartment, one of the connection conductors of the primary phase winding being connected to the contact range of the nearest phase terminal, and the other conductor being connected to the rear end of the coil opposite the fixed phase contact, and that the orifices are located in the interval arranged between said phase terminal, and the exhaust zone of the first arc extinguishing chamber.

Le raccordement de l'enroulement primaire de phase s'opère par interruption du conducteur de liaison entre la bobine et la plage de contact de la borne, ce qui évite l'usage de pièces de connexion additionnelles. Ce raccordement ne présente aucune difficulté étant donné que les pièces à raccorder sont adjacentes.The primary phase winding is connected by interrupting the connecting conductor between the coil and the terminal contact area, which avoids the use of additional connection parts. This connection presents no difficulty since the parts to be connected are adjacent.

Selon un premier mode de réalisation, le disjoncteur différentiel comporte un circuit de neutre coupé logé à gauche du circuit de phase dans le premier compartiment, et ayant une paire de contacts de neutre séparables. Le circuit de phase est alors agencé entre le circuit de neutre et le deuxième compartiment, avec passage des conducteurs internes de neutre dans le volume du circuit de phase, l'un des conducteurs de raccordement de l'enroulement primaire de neutre étant branché à la plage de contact de la borne de neutre la plus proche, et l'autre conducteur étant connecté à un conducteur de liaison avec le contact fixe de neutre.According to a first embodiment, the differential circuit breaker comprises a cut neutral circuit housed to the left of the phase circuit in the first compartment, and having a pair of separable neutral contacts. The phase circuit is then arranged between the neutral circuit and the second compartment, with internal neutral conductors passing through the volume of the phase circuit, one of the connection conductors of the primary neutral winding being connected to the contact range of the nearest neutral terminal, and the other conductor being connected to a connecting conductor with the fixed neutral contact.

Les orifices de passage dans ledit intervalle du disjoncteur s'étendent dans un plan vertical perpendiculaire à la paroi et au fond du boîtier.The passage openings in said circuit breaker interval extend in a vertical plane perpendicular to the wall and to the bottom of the housing.

Selon un deuxième mode de réalisation, le disjoncteur différentiel comporte un circuit de neutre passant, disposé dans le deuxième compartiment.According to a second embodiment, the differential circuit breaker comprises a passing neutral circuit, disposed in the second compartment.

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre des deux modes de réalisation de l'invention, donnés à titre d'exemples non limitatifs et représentés aux dessins annexés, dans lesquels:

  • la figure 1 est une vue en perspective du schéma électrique du disjoncteur différentiel unipolaire et neutre coupé;
  • la figure 2 représente une vue en plan du disjoncteur selon la figure 1;
  • les figures 3 à 5 montrent des vues en coupe respectivement selon les lignes III-III, IV-IV, V-V de la figure 2;
  • la figure 6 représente une vue à échelle agrandie du transformateur différentiel de la figure 1;
  • la figure 7 est une vue identique à la figure 2 d'une variante de réalisation;
  • la figure 8 montre une vue en coupe selon la ligne VIII-VIII de la figure 7.
Other advantages and characteristics will emerge more clearly from the description which follows of the two embodiments of the invention, given by way of examples not limiting and shown in the accompanying drawings, in which:
  • Figure 1 is a perspective view of the electrical diagram of the unipolar and neutral circuit breaker cut;
  • Figure 2 shows a plan view of the circuit breaker according to Figure 1;
  • Figures 3 to 5 show sectional views respectively along lines III-III, IV-IV, VV of Figure 2;
  • Figure 6 shows an enlarged view of the differential transformer of Figure 1;
  • Figure 7 is a view identical to Figure 2 of an alternative embodiment;
  • FIG. 8 shows a sectional view along line VIII-VIII of FIG. 7.

Sur les figures 1 à 6, un disjoncteur différentiel 10 unipolaire et neutre est logé dans un boîtier 12 isolant, subdivisé par une paroi 14 médiane de séparation en deux parties adjacentes, comprenant un premier compartiment disjoncteur et un deuxième compartiment à protection différentielle.In FIGS. 1 to 6, a single-pole and neutral differential circuit breaker 10 is housed in an insulating casing 12, subdivided by a central wall 14 of separation into two adjacent parts, comprising a first circuit breaker compartment and a second differential protection compartment.

Le premier compartiment 16 disjoncteur comporte un circuit de phase 20 et un circuit de neutre 22 séparés l'un de l'autre par une cloison 24 isolante, et reliés respectivement à une première paire de bornes 26,28 de phase, et une deuxième paire de bornes 30,32 de neutre. Les bornes 26,30 amont sont juxtaposées sur une même face latérale 31 étroite du boîtier 12, tandis que les bornes 28,32 aval sont disposées côte à côte sur l'autre face opposée 33.The first circuit breaker compartment 16 comprises a phase circuit 20 and a neutral circuit 22 separated from each other by an insulating partition 24, and connected respectively to a first pair of phase terminals 26, 28 and a second pair of neutral terminals 30.32. The upstream terminals 26.30 are juxtaposed on the same narrow side face 31 of the housing 12, while the downstream terminals 28.32 are arranged side by side on the other opposite face 33.

Le circuit de phase 20 (figures 1 et 4) comprend un contact mobile 34 relié électriquement à la borne 26 amont par un déclencheur à bilame 36, et un contact fixe 38 connecté à une extrémité 39 antérieure d'une bobine 40 d'excitation d'un déclencheur électromagnétique 42. Une première chambre d'extinction d'arc 44 est disposée entre le déclencheur électromagnétique 42 et le fond du boîtier 12, et comporte un paquet de tôles de désionisation de l'arc tiré entre les contacts 34,38.The phase circuit 20 (Figures 1 and 4) includes a movable contact 34 electrically connected to the upstream terminal 26 by a trip device. bimetallic strip 36, and a fixed contact 38 connected to an anterior end 39 of a coil 40 for exciting an electromagnetic trip device 42. A first arc extinguishing chamber 44 is disposed between the electromagnetic trip device 42 and the bottom of the housing 12, and comprises a packet of sheets for deionizing the arc drawn between the contacts 34, 38.

Le circuit de neutre 22 (figures 1 et 5) est doté d'un contact fixe 46, d'un contact mobile 48 relié électriquement à la borne 30, et d'une deuxième chambre d'extinction d'arc 50. Le circuit de neutre 22 est situé à gauche du circuit de phase 20 et ne possède pas de déclencheur.The neutral circuit 22 (Figures 1 and 5) has a fixed contact 46, a movable contact 48 electrically connected to the terminal 30, and a second arc extinguishing chamber 50. The circuit neutral 22 is located to the left of phase circuit 20 and does not have a trigger.

Les deux contacts mobiles 34,48 sont actionnés par un premier mécanisme 52 à commande manuelle par une manette 53 et automatique par le déclencheur thermique à bilame 36 et le déclencheur électromagnétique 42 à bobine 40. Le premier mécanisme 52 peut être du type décrit dans le document FR-A-2.616.583.The two movable contacts 34, 48 are actuated by a first mechanism 52 with manual control by a lever 53 and automatic by the thermal bimetal trigger 36 and the electromagnetic trigger 42 with coil 40. The first mechanism 52 can be of the type described in the document FR-A-2.616.583.

Le deuxième compartiment 18 (figures 1 et 3) est situé à droite du premier compartiment 16, et renferme un transformateur différentiel 54 et un relais 56 de déclenchement coopérant avec un deuxième mécanisme 58 à manette 60 de réarmement. Le deuxième mécanisme 58 est interconnecté, avec le premier mécanisme 52 au moyen de liaisons mécaniques (non représentées) autorisant une action de déclenchement du disjoncteur 10 lors de l'émission d'un ordre de déclenchement différentiel par le relais 56, et une action de réarmement automatique du relais 56 après une manoeuvre de déclenchement du disjoncteur 10. Le deuxième mécanisme 58 peut être du type décrit dans le document FR-A-2.628.262.The second compartment 18 (Figures 1 and 3) is located to the right of the first compartment 16, and contains a differential transformer 54 and a trigger relay 56 cooperating with a second mechanism 58 with handle 60 for reset. The second mechanism 58 is interconnected, with the first mechanism 52 by means of mechanical connections (not shown) authorizing a tripping action of the circuit breaker 10 when a differential tripping order is issued by the relay 56, and an action of automatic resetting of the relay 56 after a tripping operation of the circuit breaker 10. The second mechanism 58 may be of the type described in the document FR-A-2.628.262.

Le transformateur différentiel 54 (figures 1 et 6) comprend un tore 62 magnétique portant un enroulement primaire de phase 64, un enroulement primaire de neutre 66, et un enroulement secondaire de mesure (non représenté), ce dernier étant raccordé au relais 56 de déclenchement. Un défaut à la terre se traduit par un déséquilibre entre les courants parcourant les enroulements primaires 64,66 et engendre un courant secondaire dans l'enroulement de mesure pour l'alimentation du relais 56.The differential transformer 54 (Figures 1 and 6) comprises a magnetic toroid 62 carrying a primary phase winding 64, a primary neutral winding 66, and a secondary measurement winding (not shown), the latter being connected. to trip relay 56. An earth fault results in an imbalance between the currents flowing through the primary windings 64,66 and generates a secondary current in the measurement winding for the supply of relay 56.

La disposition des enroulements primaires 64,66 de phase et de neutre, dans le deuxième compartiment 18 impose que leurs deux paires de conducteurs internes de raccordement 68,70; 72,74 traversent la paroi 14 médiane par des orifices 76,78; 80,82 de passage correspondants. (figures 1,3 et 6).The arrangement of the primary windings 64,66 of phase and neutral, in the second compartment 18 requires that their two pairs of internal connection conductors 68,70; 72.74 pass through the middle wall 14 through orifices 76.78; 80.82 corresponding passages. (Figures 1,3 and 6).

Les orifices 76,78; 80,82 se trouvent sensiblement dans un même plan vertical de connexion s'étendant perpendiculairement à la paroi 14 et au fond du boîtier 12, en étant agencé dans l'intervalle 83 entre les bornes 28,32, et la zone arrière d'échappement des deux chambres 44, 50 d'extinction d'arc.The orifices 76,78; 80.82 lie substantially in the same vertical connection plane extending perpendicular to the wall 14 and to the bottom of the housing 12, being arranged in the interval 83 between the terminals 28.32, and the rear exhaust zone of the two arc extinguishing chambers 44, 50.

L'enroulement primaire de phase 64 est inséré en série dans le circuit de phase 20 par interruption de la liaison entre la borne 28 et l'extrémité 84 postérieure de la bobine 40, située à l'opposé de l'extrémité 39 associée au contact fixe 38. Le conducteur de raccordement 68 traversant l'orifice 76 est connecté dans le premier compartiment 16 à l'extrémité 39 de la bobine 40, et l'autre conducteur de raccordement 70 traversant l'orifice 78 est branché à la plage de contact de la borne de phase 28 (figures 1 et 4).The primary phase winding 64 is inserted in series into the phase circuit 20 by interrupting the connection between terminal 28 and the rear end 84 of the coil 40, located opposite the end 39 associated with the contact. fixed 38. The connection conductor 68 passing through the orifice 76 is connected in the first compartment 16 at the end 39 of the coil 40, and the other connection conductor 70 passing through the orifice 78 is connected to the contact pad phase terminal 28 (Figures 1 and 4).

L'enroulement primaire de neutre 66 est inséré en série dans le circuit de neutre 22 par interruption de la liaison entre le contact fixe 46 de neutre, et la borne de neutre 32. (figures 1 et 5). Le conducteur de raccordement 72 traversant l'orifice 80 est relié à un prolongement du contact fixe 46, et l'autre conducteur de raccordement 74 est connecté à la plage de contact de la borne de neutre 32.The primary neutral winding 66 is inserted in series into the neutral circuit 22 by interrupting the connection between the fixed neutral contact 46 and the neutral terminal 32. (Figures 1 and 5). The connection conductor 72 passing through the orifice 80 is connected to an extension of the fixed contact 46, and the other connection conductor 74 is connected to the contact pad of the neutral terminal 32.

En plus de la paroi 14, les conducteurs de raccordement 72,74, de l'enroulement primaire de neutre 66 traversent la cloison 24 qui subdivise le premier compartiment 16 disjoncteur. La longueur de ces conducteurs 72,74 est supérieure à celle des autres conducteurs de raccordement 68,70 de l'enroulement primaire de phase 64. Le volume délimité par le circuit de phase 20 est traversé par les conducteurs 72,74 dans la partie inférieure du boîtier 12, c'est à dire dans un endroit dépourvu de parties actives du circuit de phase 20. Les quatre orifices 76,78,80,82 de passage sont superposés et échelonnés à intervalles réguliers dans ledit plan vertical de connexion, de manière à faciliter le raccordement électrique des enroulements primaires 64,66.In addition to the wall 14, the connection conductors 72, 74, of the primary neutral winding 66 pass through the partition 24 which subdivides the first compartment 16 circuit breaker. The length of these conductors 72.74 is greater than that of the other connection conductors 68.70 of the primary phase winding 64. The volume delimited by the phase circuit 20 is crossed by the conductors 72.74 in the lower part of the housing 12, that is to say in a place devoid of active parts of the phase circuit 20. The four passage openings 76, 78, 80, 82 are superimposed and staggered at regular intervals in said vertical connection plane, so to facilitate the electrical connection of the primary windings 64,66.

Sur les figures 7 et 8, le disjoncteur différentiel 100 possède un circuit de neutre passant, c'est à dire non coupé. Le premier compartiment 160 comporte uniquement le circuit de phase 20 associé à la manette 53 et à la première paire de bornes 26,28 de phase. Le deuxième compartiment 180 renferme la partie différentielle et le circuit de neutre passant, raccordée à la deuxième paire de bornes 130, 132 de neutre. Dans cette configuration, la paroi 14 comporte seulement les deux orifices 78,80 supérieurs pour les conducteurs 68,70 de raccordement de l'enroulement primaire de phase 64. L'interruption du circuit de phase 20 pour l'insertion de l'enroulement primaire de phase 64 s'effectue de la même manière que sur les figures 1 et 4.In FIGS. 7 and 8, the differential circuit breaker 100 has a passing neutral circuit, that is to say not cut. The first compartment 160 only comprises the phase circuit 20 associated with the lever 53 and with the first pair of phase terminals 26, 28. The second compartment 180 contains the differential part and the passing neutral circuit, connected to the second pair of neutral terminals 130, 132. In this configuration, the wall 14 has only the two upper openings 78.80 for the conductors 68.70 for connection of the primary phase winding 64. Interruption of the phase circuit 20 for the insertion of the primary winding phase 64 is carried out in the same manner as in FIGS. 1 and 4.

Claims (4)

  1. A single-pole plus neutral differential circuit breaker (10, 100) housed in an insulating case (12), subdivided by a separating wall (14) into two adjacent parts, containing :
    - a first circuit breaker compartment (16, 160) comprising a phase circuit (20) connected to a first pair of phase terminals (26, 28) arranged on two opposite narrow faces (31, 33) of the case (12), a pair of stationary (38) and movable (34) phase contacts, associated to a first arc extinguishing chamber (44), and a first mechanism (52) for manual control by a handle (53) and automatic control by cooperation with a thermal trip device with bimetal strip (36) and an electromagnetic trip device (42) with excitation coil (40),
    - a second differential protection compartment (18, 180) comprising a differential transformer (54) with magnetic toroid (62) bearing a phase primary winding (64), a neutral primary winding (66), and a secondary measuring winding connected to an electromagnetic trip relay (56) cooperating mechanically with the first mechanism (52) via a second tripping mechanism (58),
    - a neutral circuit (22) connected to a second pair of neutral terminals (30, 32; 130, 132),
    - and orifices (76, 78) arranged in the separating wall (14) of the two compartments (16, 18) for passage of two internal connecting conductors (68, 70) enabling the phase primary winding (64) to be connected in the phase circuit (20),
    characterized in that the phase circuit (20) is adjacent to the second compartment (18, 180), one of the connecting conductors (70) of the phase primary winding (64) being connected to the contact strip of the nearer phase terminal (28), and the other conductor (68) being connected to the rear end (84) of the coil (40) opposite the phase stationary contact (38), and that the orifices (76, 78) are situated in the gap (83) arranged between said phase terminal (28), and the outlet zone of the first arc estinguishing chamber (44).
  2. The differential circuit breaker according to claim 1, comprising a broken neutral circuit (22) housed in the first circuit breaker compartment (16) and having a pair of stationary (46) and movable (48) neutral contacts, characterized in that the phase circuit (20) of the circuit breaker (10) is arranged between the neutral circuit (22) and the second compartment (18), and that the neutral primary winding (66) is connected in the neutral circuit (22) by two internal connecting conductors (72, 74) passing through two additional orifices (80, 82) arranged in said gap of the wall (14), one of the connecting conductors (74) of the neutral primary winding (66) being connected to the contact strip of the nearer neutral terminal (32), and the other conductor (72) being connected to a conductor for connection with the neutral stationary contact (46).
  3. The differential circuit breaker according to claim 2, characterized in that the orifices (76, 78, 80, 82) for passage in said gap (83) of the circuit breaker (10) extend in a vertical plane perpendicular to the wall (14) and to the back plate of the case (12).
  4. The differential circuit breaker according to claim 1, characterized in that the passing neutral circuit of the circuit breaker (100) is arranged in the second compartment (180).
EP91420140A 1990-05-10 1991-04-29 Single-pole, neutral differential circuit breaker Expired - Lifetime EP0456585B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9006551 1990-05-10
FR9006551A FR2662017B1 (en) 1990-05-10 1990-05-10 SINGLE POLE, NEUTRAL DIFFERENTIAL CIRCUIT BREAKER.

Publications (2)

Publication Number Publication Date
EP0456585A1 EP0456585A1 (en) 1991-11-13
EP0456585B1 true EP0456585B1 (en) 1995-02-15

Family

ID=9396963

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420140A Expired - Lifetime EP0456585B1 (en) 1990-05-10 1991-04-29 Single-pole, neutral differential circuit breaker

Country Status (5)

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EP (1) EP0456585B1 (en)
AT (1) ATE118648T1 (en)
DE (1) DE69107332T2 (en)
ES (1) ES2071268T3 (en)
FR (1) FR2662017B1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2687838B1 (en) * 1992-02-21 1994-04-08 Merlin Gerin SINGLE POLE AND NEUTRAL DIFFERENTIAL CIRCUIT BREAKER WITH TEST CIRCUIT.
FR2715767B1 (en) * 1994-02-02 1996-04-26 Legrand Sa Unipolar and neutral differential circuit breaker.
JP3210820B2 (en) * 1994-11-15 2001-09-25 松下電工株式会社 Earth leakage breaker
DE10324390A1 (en) * 2003-05-30 2004-12-23 Abb Patent Gmbh Electrical release device for an electric switch, fits in a casing with moving and fixed contacts, a switch latch, an electromagnetic tripping device with an armature, a core, a coil and a yoke
CN101989518B (en) * 2009-08-06 2014-05-14 浙江正泰电器股份有限公司 Phase-line and neutral-line type residual current action breaker
FR2969369A1 (en) * 2010-12-20 2012-06-22 Schneider Electric Ind Sas ELECTRICAL PROTECTION APPARATUS COMPRISING THE DIFFERENTIAL PROTECTION FUNCTION
CN106449318B (en) * 2015-08-04 2019-05-24 浙江正泰电器股份有限公司 Breaker tripping mechanism
FR3072179B1 (en) * 2017-10-11 2020-10-09 Schneider Electric Ind Sas ELECTRICAL FAULT DETECTION MODULE FOR AN ELECTRIC PROTECTION ASSEMBLY AND ELECTRIC PROTECTION ASSEMBLY INCLUDING SUCH A DETECTION MODULE
CN115424902B (en) * 2022-09-07 2024-04-23 加西亚电子电器股份有限公司 Leakage circuit breaker

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL275674A (en) * 1962-03-08
DE7105414U (en) * 1971-02-13 1971-05-06 Bbc Ag Multipole residual current circuit breaker
DE3374487D1 (en) * 1982-08-19 1987-12-17 Bbc Brown Boveri & Cie Circuit breaker with leakage current release
FR2578093B1 (en) * 1985-02-27 1987-03-06 Merlin Gerin UNIPOLAR AND NEUTRAL DIFFERENTIAL CIRCUIT BREAKER

Also Published As

Publication number Publication date
DE69107332D1 (en) 1995-03-23
EP0456585A1 (en) 1991-11-13
DE69107332T2 (en) 1995-09-07
FR2662017B1 (en) 1996-07-26
ATE118648T1 (en) 1995-03-15
FR2662017A1 (en) 1991-11-15
ES2071268T3 (en) 1995-06-16

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