EP0079270B1 - Low-voltage branch circuit breaker provided with a remotely controlled calibration switch - Google Patents

Low-voltage branch circuit breaker provided with a remotely controlled calibration switch Download PDF

Info

Publication number
EP0079270B1
EP0079270B1 EP19820401989 EP82401989A EP0079270B1 EP 0079270 B1 EP0079270 B1 EP 0079270B1 EP 19820401989 EP19820401989 EP 19820401989 EP 82401989 A EP82401989 A EP 82401989A EP 0079270 B1 EP0079270 B1 EP 0079270B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
fact
generator
size
branch circuit
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.)
Expired
Application number
EP19820401989
Other languages
German (de)
French (fr)
Other versions
EP0079270A1 (en
Inventor
Paul Canonne
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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 filed Critical Merlin Gerin SA
Publication of EP0079270A1 publication Critical patent/EP0079270A1/en
Application granted granted Critical
Publication of EP0079270B1 publication Critical patent/EP0079270B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7463—Adjusting only the electromagnetic mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit

Definitions

  • the invention relates to a multiple-gauge branch circuit breaker, inserted downstream of an energy meter in an alternative distribution network for supplying a subscriber's low-voltage electrical installation, the change of circuit breaker rating being remotely controlled by the agent from the meter housing box through a pilot wire link circuit arranged between the box and the circuit breaker.
  • the remote control by the caliber change agent allows the installation in the subscriber's premises of a multi-caliber branch circuit breaker with tamper-proof trip unit, but requires the incorporation in the external box of each subscriber of a special control circuit permanently connected to the link circuit.
  • This control circuit must be sealed and is electrically supplied by an auxiliary source. The cost of installation and maintenance of such a control circuit is prohibitive, since the frequency of change of rating and subscribed power remains low for the same electrical installation.
  • the present invention aims to remedy the aforementioned drawbacks and to allow a simplified and reliable remote control of the change in size.
  • connection circuit breaker is characterized in that the connection circuit is electrically connected to a connection terminal provided inside the box and intended for the temporary connection by the agent of a portable control generator capable of sending by said circuit a caliber change signal to an adjustment switch associated with the tripping unit of the circuit breaker.
  • the temporary connection of the command generator occurs only during the caliber change operation carried out by the agent.
  • the installation of the remote control device requires a connection terminal in the box and an adjustment switch associated with the circuit breaker.
  • the gauge switch is mechanically coupled to the cursor of a resistance selection device of the trip unit, and is formed by a step actuator with electromechanical rotation or translation control, said actuator being attached to or integrated into the circuit breaker box.
  • the step-by-step actuator of the switch comprises a ratchet wheel whose advance is controlled by a first electromagnet supplied by the generator during the caliber change, the ratchet wheel being locked at each step by a subject retaining pawl to the action of a return spring.
  • a second electromagnet is intended to cause the unlocking of the retaining pawl and the automatic return of the switch to the maximum rating of the circuit breaker, for example 90 amperes.
  • the portable generator comprises a connection plug which can be plugged into the terminal of the link circuit, and a caliber preselector cooperating with a contact for switching on the generator.
  • the generator is advantageously direct current or unidirectional, and the preselector is arranged to successively excite the second electromagnet for unlocking the pawl, then the first electromagnet for advancing the ratchet wheel, the duration of excitation of the first electromagnet determining the number of steps of the actuator corresponding to the rating displayed on the preselector.
  • the invention is described below as being applied to a bipolar connection circuit breaker (phase and neutral) for a single-phase distribution network, but it is obvious that the various characteristics of the invention are also applicable to circuit breakers having a number of different poles, in particular four-pole (three phases more neutral) for a three-phase network.
  • a more neutral bipolar or unipolar connection circuit breaker 10 is connected downstream of an energy meter 12 in a single-phase alternating distribution network with L and N conductors for supplying the electrical installation low voltage of a customer having subscribed to a predetermined subscription with a distribution company.
  • the counter 12 is housed in an external electrical box 14 accessible to the distributor, and the circuit breaker 10 is arranged in the subscriber's room, separated from the box 14 by a distance d which varies according to the distance.
  • the circuit breaker 10 conventionally comprises a mechanism 16 for operating the movable contacts 18, 20, actuated either manually by a trip button 22 and a reset button 24, or automatically by a trip bar from a relay 26 electromagnetic polarized controlled by a trip unit 28.
  • the trigger block 28 includes a trigger static overload controller 30 with long delay protection and / or short delay protection, controlled by a current sensor 32 inserted in the L phase conductor and providing a signal proportional to the current flowing through the circuit breaker.
  • the output signal from the sensor 32 is rectified in a rectifier bridge 33 and applied to a caliber selection device 34 which attenuates the value of the output signal as a function of the caliber selected.
  • the modified signal at the output of the selection device 34 is applied to the static trip device 30 intended to send a trip order to the relay 26 when an overload current appears which exceeds a predetermined threshold corresponding to the rating displayed by the device. selection 34.
  • the static trip device 30 is of the own current type without auxiliary power supply, the trip energy being accumulated in a capacitor C.
  • the device for selecting the rating 34 comprises a voltage divider bridge of n resistors R i , R 2 , R 3 , R 4 ... connected in series and provided with pads 1, 2, 3, 4 ... for drawing the voltage cooperating with a slider 36 for adjustment.
  • the bridge can be constituted by a simple potentiometer. The operation of such a circuit breaker is well known to specialists, and it is unnecessary to describe it in detail.
  • the cursor 36 is located on the pad 1 of the divider bridge.
  • the adjustment of the caliber to 45, 60 and 90 Amps takes place by changing the position of the cursor 36 respectively on the pads 2, 3 and 4 of the divider bridge.
  • the different size values are given by way of examples, and can of course be different.
  • the position of the cursor 36 thus determines the pricing of the subscription corresponding to the power subscribed by the subscriber.
  • the change in rating occurs by means of a rating switch 38 controlled remotely from the box 14.
  • the switch 38 can be attached to the case of the circuit breaker 10 or integrated into the latter, so as to ensure the driving the cursor 36 on a predetermined pad of the selection device 34.
  • a link circuit 40 with pilot wires 42, 44 electrically connects the switch 38 of the circuit breaker 10 to a connection terminal 46 provided inside the box 14 of the counter 12
  • Terminal 46 can receive by plugging in a socket 48 for connection of a portable generator G with control contact 50.
  • the generator G is connected and switched on exclusively by the distributor following a power change request made by the subscriber.
  • Terminal 46 of box 14 and the circuit breaker box 10 are tamper-proof.
  • the gauge switch 38 is formed by an electromechanical actuator 52 step by step comprising a ratchet wheel 54 whose retaining pawl 56 is biased in the locking position by a return spring 57.
  • the wheel 54 is integral with the slider drive shaft 36, and an elastic means, in particular a torsion spring 60 causes the ratchet 56 to unlock automatically the wheel 54 to an original position corresponding to the maximum rating of the circuit breaker, for example 90 Amps, in which the cursor 36 is located on the pad 4 for inserting the resistor R 4 .
  • the step-by-step advancement of the ratchet wheel 54 of the actuator 52 takes place by excitation of a first electromagnet 62 with a core 64 plunger mechanically coupled to the end of the pawl 56.
  • Unlocking the pawl 56 for the reset of the switch 38 on the caliber 90 A occurs during the excitation of a second electromagnet 66 with plunger core 68 articulated to the pawl 56 by means of a connecting rod 70.
  • the core 64 of the first electro -magnet 62 extends in alignment with the pawl 56, while the core 68 of the second electromagnet 66 and the connecting rod 70 are substantially perpendicular to the pawl 56.
  • the generator G is of the DC type or unidirectional current, comprising, for example, two accumulators 72, 74 with opposite polarities cooperating with an inverter 76 of the direction of polarity electrically connected in series with the contact 50 for switching on.
  • the inverter 76 cooperates either with a pad A connected to the negative pole of one (72) of the accumulators, or with a pad B connected to the positive pole of the other accumulator 74.
  • the control winding of the first electromagnet 62 is connected in series with the anode of a diode 78 whose cathode is at the potential of the pilot wire 42 of the connection circuit 40.
  • One of the ends of the winding of control of the second electromagnet 66 is connected to the cathode of a diode 80, and the opposite end is connected to the pilot wire 44 for connection of the first electromagnet 62.
  • the actuator 52 with electromechanical control of the switch 38 is suitable for the DC generator G comprising two accumulators 72, 74 associated with the inverter 76, but it is clear that the invention applies to any other type of generator cooperating with an actuator with rotary or sliding control.
  • the inverter 76 can be combined with a caliber preselector 81 cooperating with the contact 50 to control the duration of excitation of the electromagnet 62 as a function of the caliber selected by the agent.
  • a disc 82 for displaying the position of the cursor 36 which indicates to the subscriber the rating selected by the remote control of the switch 38.
  • the agent proceeds to the temporary connection of the portable generator G to the connection circuit 40 by plugging the socket 48 into the terminal 46 of the box 14
  • the caliber requested is displayed by the agent at the preselector 81 and the contact 50 comes to the generator G switching position.
  • the inverter 76 is located on the pad B, so as to ensure the excitation of the electromagnet 66 for unlocking the pawl 56 causing the switch 38 to return to the maximum rating of 90 A corresponding to the position of the cursor 36 on the pad 4 of the selection device 34.
  • the reverser 76 is actuated on pad A for the excitation of the electromagnet 62 controlling the step-by-step advance of the ratchet wheel 54.
  • the number of steps of the wheel 54 is a function of the duration of excitation of the electromagnet 62 fixed by the presel ector 81.
  • the latter then opens the contact 50, and the position of the cursor 36 on one of the pads 1, 2, 3 or 4 corresponds to the requested rating.
  • the remote control of the switch 38 from the box 14 is then finished, and the agent withdraws the socket 48 for disconnecting the generator G.
  • the new selected rating of the circuit breaker 10 is displayed by the signaling disc 82 of the switch 38.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Description

L'invention est relative à un disjoncteur de branchement à calibres multiples, inséré en aval d'un compteur d'énergie dans un réseau alternatif de distribution pour l'alimentation de l'installation électrique à basse tension d'un abonné, le changement de calibre du disjoncteur étant télécommandé par l'agent depuis le coffret de logement du compteur grâce à un circuit de liaison à fils pilote agencé entre le coffret et le disjoncteur.The invention relates to a multiple-gauge branch circuit breaker, inserted downstream of an energy meter in an alternative distribution network for supplying a subscriber's low-voltage electrical installation, the change of circuit breaker rating being remotely controlled by the agent from the meter housing box through a pilot wire link circuit arranged between the box and the circuit breaker.

La télécommande par l'agent du changement de calibre permet l'installation dans le local de l'abonné d'un disjoncteur de branchement multi- calibres à bloc déclencheur inviolable, mais nécessite l'incorporation dans le coffret extérieur de chaque abonné d'un circuit de commande spécial connecté à demeure dans le circuit de liaison. Ce circuit de commande doit être plombé et est alimenté électriquement par une source auxiliaire. Le coût d'installation et de maintenance d'un tel circuit de commande est prohibitif, car la fréquence de changement de calibre et de puissance souscrite reste peu élevée pour une même installation électrique.The remote control by the caliber change agent allows the installation in the subscriber's premises of a multi-caliber branch circuit breaker with tamper-proof trip unit, but requires the incorporation in the external box of each subscriber of a special control circuit permanently connected to the link circuit. This control circuit must be sealed and is electrically supplied by an auxiliary source. The cost of installation and maintenance of such a control circuit is prohibitive, since the frequency of change of rating and subscribed power remains low for the same electrical installation.

La présente invention a pour but de remédier aux inconvénients précités et de permettre une télécommande simplifiée et fiable du changement de calibre.The present invention aims to remedy the aforementioned drawbacks and to allow a simplified and reliable remote control of the change in size.

Le disjoncteur de branchement est caractérisé par le fait que le circuit de liaison est relié électriquement à une borne de branchement ménagée à l'intérieur du coffret et destinée au raccordement temporaire par l'agent d'un générateur portable de commande susceptible d'envoyer par ledit circuit un signal de changement de calibre à un commutateur de réglage associé au bloc déclencheur du disjoncteur.The connection circuit breaker is characterized in that the connection circuit is electrically connected to a connection terminal provided inside the box and intended for the temporary connection by the agent of a portable control generator capable of sending by said circuit a caliber change signal to an adjustment switch associated with the tripping unit of the circuit breaker.

Le branchemenY temporaire du générateur de commande intervient uniquement lors de l'opéra-' tion de changement de calibre effectuée par l'agent. Outre la pose du circuit de liaison à fils pilote, l'installation du dispositif de télécom-' mande nécessite une borne de branchement dans le coffret et un commutateur de réglage associé au disjoncteur.The temporary connection of the command generator occurs only during the caliber change operation carried out by the agent. In addition to installing the pilot wire connection circuit, the installation of the remote control device requires a connection terminal in the box and an adjustment switch associated with the circuit breaker.

Selon une caractéristique de l'invention, le commutateur de calibres est accouplé mécaniquement au curseur d'un dispositif de sélection à résistances du bloc déclencheur, et est formé par un actionneur pas à pas à commande électromécanique de rotation ou de translation, ledit actionneur étant accolé au boîtier du disjoncteur ou intégré à ce dernier. L'actionneur pas à pas du commutateur comporte une roue à rochet dont l'avance est commandée par un premier électro-aimant alimenté par le générateur lors du changement de calibre, la roue à rochet étant verrouillée à chaque pas par un cliquet de retenue soumis à l'action d'un ressort de rappel. Un deuxième électro-aimant est destiné à provoquer le déverrouillage du cliquet de retenue et le retour automatique du commutateur sur le calibre maximum du disjoncteur, par exemple 90 Ampères.According to a characteristic of the invention, the gauge switch is mechanically coupled to the cursor of a resistance selection device of the trip unit, and is formed by a step actuator with electromechanical rotation or translation control, said actuator being attached to or integrated into the circuit breaker box. The step-by-step actuator of the switch comprises a ratchet wheel whose advance is controlled by a first electromagnet supplied by the generator during the caliber change, the ratchet wheel being locked at each step by a subject retaining pawl to the action of a return spring. A second electromagnet is intended to cause the unlocking of the retaining pawl and the automatic return of the switch to the maximum rating of the circuit breaker, for example 90 amperes.

Selon une autre caractéristique de l'invention, le générateur portable comporte une prise de connexion enfichable dans la borne du circuit de liaison, et un présélecteur de calibre coopérant avec un contact de mise en circuit du générateur. Le générateur est avantageusement à courant continu ou unidirectionnel, et le présélecteur est agencé pour assurer successivement l'excitation du deuxième électro-aimant de déverrouillage du cliquet, puis du premier électro-aimant d'avance de la roue à rochet, la durée d'excitation du premier électro-aimant déterminant le nombre de pas de l'actionneur correspondant au calibre affiché au présélecteur.According to another characteristic of the invention, the portable generator comprises a connection plug which can be plugged into the terminal of the link circuit, and a caliber preselector cooperating with a contact for switching on the generator. The generator is advantageously direct current or unidirectional, and the preselector is arranged to successively excite the second electromagnet for unlocking the pawl, then the first electromagnet for advancing the ratchet wheel, the duration of excitation of the first electromagnet determining the number of steps of the actuator corresponding to the rating displayed on the preselector.

D'autres avantages et caractéristiques ressortiront plus clairement de l'exposé qui va suivre d'un mode de mise en oeuvre de l'invention, donné à titre d'exemple non limitatif et représenté aux dessins annexés, dans lesquels :

  • la figure 1 est un schéma électrique d'un disjoncteur de branchement monophasé équipé d'un commutateur de calibre télécommandé selon l'invention, le générateur de commande étant montré en position déconnectée ;
  • la figure 2 représente le schéma électrique du générateur de commande en position connectée avec le circuit de liaison ;
  • la figure 3 montre un mode de réalisation du commutateur de calibre accouplé au curseur d'un circuit de sélection à résistances, associé à un bloc déclencheur statique du disjoncteur.
Other advantages and characteristics will emerge more clearly from the description which follows of an embodiment of the invention, given by way of nonlimiting example and represented in the appended drawings, in which:
  • FIG. 1 is an electrical diagram of a single-phase connection circuit breaker equipped with a remote-controlled gauge switch according to the invention, the control generator being shown in the disconnected position;
  • FIG. 2 represents the electrical diagram of the control generator in the position connected with the link circuit;
  • FIG. 3 shows an embodiment of the gauge switch coupled to the cursor of a resistance selection circuit, associated with a static trip unit of the circuit breaker.

L'invention est décrite par la suite comme étant appliqué à un disjoncteur de branchement bipolaire (phase et neutre) pour un réseau de distribution monophasé, mais il est évident que les diverses caractéristiques de l'invention sont également applicables aux disjoncteurs ayant un nombre de pôles différent, notamment tétrapo- laire (trois phases plus neutre) pour un réseau triphasé.The invention is described below as being applied to a bipolar connection circuit breaker (phase and neutral) for a single-phase distribution network, but it is obvious that the various characteristics of the invention are also applicable to circuit breakers having a number of different poles, in particular four-pole (three phases more neutral) for a three-phase network.

Sur les figures 1 à 3, un disjoncteur de branchement 10 bipolaire ou unipolaire plus neutre est connecté en aval d'un compteur 12 d'énergie dans un réseau alternatif monophasé de distribution à conducteurs L et N pour l'alimentation de l'installation électrique basse tension d'un client ayant souscrit un abonnement prédéterminé auprès d'une compagnie de distribution. Le compteur 12 est logé dans un coffret 14 électrique extérieur accessible à l'agent distributeur, et le disjoncteur 10 est disposé dans le local de l'abonné, séparé du coffret 14 par une distance d variable selon l'éloignement. Le disjoncteur 10 comporte d'une manière classique un mécanisme 16 commun de manoeuvre des contacts mobiles 18, 20, actionné soit manuellement par un bouton de déclenchement 22 et un bouton de réarmement 24, soit automatiquement par une barre de déclenchement d'un relais 26 électromagnétique polarisé commandé par un bloc déclencheur 28.In FIGS. 1 to 3, a more neutral bipolar or unipolar connection circuit breaker 10 is connected downstream of an energy meter 12 in a single-phase alternating distribution network with L and N conductors for supplying the electrical installation low voltage of a customer having subscribed to a predetermined subscription with a distribution company. The counter 12 is housed in an external electrical box 14 accessible to the distributor, and the circuit breaker 10 is arranged in the subscriber's room, separated from the box 14 by a distance d which varies according to the distance. The circuit breaker 10 conventionally comprises a mechanism 16 for operating the movable contacts 18, 20, actuated either manually by a trip button 22 and a reset button 24, or automatically by a trip bar from a relay 26 electromagnetic polarized controlled by a trip unit 28.

Le bloc déclencheur 28 comporte un déclencheur statique 30 de surcharge à protection long retard et/ou à protection court retard, piloté par un capteur de courant 32 inséré dans le conducteur de phase L et fournissant un signal proportionnel au courant parcourant le disjoncteur. Le signal de sortie du capteur 32 est redressé dans un pont redresseur 33 et appliqué à un dispositif de sélection du calibre 34 qui atténue la valeur du signal de sortie en fonction du calibre sélectionné. Le signal modifié à la sortie du dispositif de sélection 34 est appliqué au déclencheur statique 30 destiné à envoyer un ordre de déclenchement au relais 26 lors de l'apparition d'un courant de surcharge qui dépasse un seuil prédéterminé correspondant au calibre affiché par le dispositif de sélection 34. Le déclencheur statique 30 est du type à propre courant sans alimentation auxiliaire, l'énergie de déclenchement étant accumulée dans un condensateur C. Le dispositif de sélection du calibre 34 comporte un pont diviseur de tension de n résistances Ri, R2, R3, R4... connectées en série et dotées de plots 1, 2, 3, 4... de prélèvement de tension coopérant avec un curseur 36 de réglage. Le pont peut être constitué par un simple potentiomètre. Le fonctionnement d'un tel disjoncteur est bien connu des spécialistes, et il est inutile de le décrire en détail. Dans le cas d'un appareil à calibre minimale fixé à 30 Ampères, le curseur 36 se trouve sur le plot 1 du pont diviseur. Le réglage du calibre à 45, 60 et 90 Ampères intervient par changement de la position du curseur 36 respectivement sur les plots 2, 3 et 4 du pont diviseur. Les différentes valeurs de calibres sont indiquées à titre d'exemples, et peuvent bien entendu être différentes. La position du curseur 36 détermine ainsi la tarification de l'abonnement correspondant à la puissance souscrite par l'abonné.The trigger block 28 includes a trigger static overload controller 30 with long delay protection and / or short delay protection, controlled by a current sensor 32 inserted in the L phase conductor and providing a signal proportional to the current flowing through the circuit breaker. The output signal from the sensor 32 is rectified in a rectifier bridge 33 and applied to a caliber selection device 34 which attenuates the value of the output signal as a function of the caliber selected. The modified signal at the output of the selection device 34 is applied to the static trip device 30 intended to send a trip order to the relay 26 when an overload current appears which exceeds a predetermined threshold corresponding to the rating displayed by the device. selection 34. The static trip device 30 is of the own current type without auxiliary power supply, the trip energy being accumulated in a capacitor C. The device for selecting the rating 34 comprises a voltage divider bridge of n resistors R i , R 2 , R 3 , R 4 ... connected in series and provided with pads 1, 2, 3, 4 ... for drawing the voltage cooperating with a slider 36 for adjustment. The bridge can be constituted by a simple potentiometer. The operation of such a circuit breaker is well known to specialists, and it is unnecessary to describe it in detail. In the case of a device with a minimum rating set at 30 amperes, the cursor 36 is located on the pad 1 of the divider bridge. The adjustment of the caliber to 45, 60 and 90 Amps takes place by changing the position of the cursor 36 respectively on the pads 2, 3 and 4 of the divider bridge. The different size values are given by way of examples, and can of course be different. The position of the cursor 36 thus determines the pricing of the subscription corresponding to the power subscribed by the subscriber.

Selon l'invention, le changement de calibre intervient au moyen d'un commutateur de calibre 38 commandé à distance depuis le coffret 14. Le commutateur 38 peut être accolé au boîtier du disjoncteur 10 ou intégré à ce dernier, de manière à assurer l'entraînement du curseur 36 sur un plot prédéterminé du dispositif de sélection 34. Un circuit de liaison 40 à fils pilote 42, 44 connecte électriquement le commutateur 38 du disjoncteur 10 à une borne de branchement 46 ménagée à l'intérieur du coffret 14 du compteur 12. La borne 46 peut recevoir par embrochage une prise 48 de connexion d'un générateur G portable à contact 50 de commande. Le raccordement et la mise en circuit du générateur G sont opérés exclusivement par l'agent distributeur suite à une demande de changement de puissance formulée par l'abonné. La borne 46 du coffret 14 et le boîtier du disjoncteur 10 sont inviolables.According to the invention, the change in rating occurs by means of a rating switch 38 controlled remotely from the box 14. The switch 38 can be attached to the case of the circuit breaker 10 or integrated into the latter, so as to ensure the driving the cursor 36 on a predetermined pad of the selection device 34. A link circuit 40 with pilot wires 42, 44 electrically connects the switch 38 of the circuit breaker 10 to a connection terminal 46 provided inside the box 14 of the counter 12 Terminal 46 can receive by plugging in a socket 48 for connection of a portable generator G with control contact 50. The generator G is connected and switched on exclusively by the distributor following a power change request made by the subscriber. Terminal 46 of box 14 and the circuit breaker box 10 are tamper-proof.

Le commutateur de calibre 38 est formé par un actionneur 52 pas à pas à commande électromécanique comprenant une roue à rochet 54 dont le cliquet 56 de retenue est sollicité en position de verrouillage par un ressort de rappel 57. La roue 54 est solidaire de l'arbre 58 d'entraînement du curseur 36, et un moyen élastique, notamment un ressort de torsion 60 provoque en cas de déverrouillage du cliquet 56 le rappel automatique de la roue 54 vers une position d'origine correspondant au calibre maximum du disjoncteur, par exemple 90 Ampères, dans lequel le curseur 36 se trouve sur le plot 4 d'insertion de la résistance R4. L'avance pas à pas de la roue 54 à rochet de l'actionneur 52 s'opère par excitation d'un premier électro-aimant 62 à noyau 64 plongeur accouplé mécaniquement à l'extrémité du cliquet 56. Le déverrouillage du cliquet 56 pour la remise du commutateur 38 sur le calibre 90 A intervient lors de l'excitation d'un deuxième électro-aimant 66 à noyau plongeur 68 articulé au cliquet 56 par l'intermédiaire d'une tige de liaison 70. Le noyau 64 du premier électro-aimant 62 s'étend dans l'alignement avec le cliquet 56, tandis que le noyau 68 du deuxième électro-aimant 66 et la tige de liaison 70 sont sensiblement perpendiculaires au cliquet 56. Le générateur G est du type à courant continu ou à courant unidirectionnel, comprenant à titre d'exemple deux accumulateurs 72, 74 à polarités opposées coopérant avec un inverseur 76 du sens de polarité connecté électriquement en série avec le contact 50 de mise en circuit. L'inverseur 76 coopère soit avec un plot A connecté au pôle négatif de l'un (72) des accumulateurs, soit avec un plot B relié au pôle positif de l'autre accumulateur 74.The gauge switch 38 is formed by an electromechanical actuator 52 step by step comprising a ratchet wheel 54 whose retaining pawl 56 is biased in the locking position by a return spring 57. The wheel 54 is integral with the slider drive shaft 36, and an elastic means, in particular a torsion spring 60 causes the ratchet 56 to unlock automatically the wheel 54 to an original position corresponding to the maximum rating of the circuit breaker, for example 90 Amps, in which the cursor 36 is located on the pad 4 for inserting the resistor R 4 . The step-by-step advancement of the ratchet wheel 54 of the actuator 52 takes place by excitation of a first electromagnet 62 with a core 64 plunger mechanically coupled to the end of the pawl 56. Unlocking the pawl 56 for the reset of the switch 38 on the caliber 90 A occurs during the excitation of a second electromagnet 66 with plunger core 68 articulated to the pawl 56 by means of a connecting rod 70. The core 64 of the first electro -magnet 62 extends in alignment with the pawl 56, while the core 68 of the second electromagnet 66 and the connecting rod 70 are substantially perpendicular to the pawl 56. The generator G is of the DC type or unidirectional current, comprising, for example, two accumulators 72, 74 with opposite polarities cooperating with an inverter 76 of the direction of polarity electrically connected in series with the contact 50 for switching on. The inverter 76 cooperates either with a pad A connected to the negative pole of one (72) of the accumulators, or with a pad B connected to the positive pole of the other accumulator 74.

L'enroulement de commande du premier électro-aimant 62 est connecté en série avec l'anode d'une diode 78 dont la cathode est au potentiel du fil pilote 42 du circuit de liaison 40. L'une des extrémités de l'enroulement de commande du deuxième électro-aimant 66 est branchée à la cathode d'une diode 80, et l'extrémité opposée est connectée au fil pilote 44 de raccordement du premier électro-aimant 62.The control winding of the first electromagnet 62 is connected in series with the anode of a diode 78 whose cathode is at the potential of the pilot wire 42 of the connection circuit 40. One of the ends of the winding of control of the second electromagnet 66 is connected to the cathode of a diode 80, and the opposite end is connected to the pilot wire 44 for connection of the first electromagnet 62.

L'actionneur 52 à commande électromécanique du commutateur 38 est adapté au générateur G à courant continu comprenant deux accumulateurs 72, 74 associés à l'inverseur 76, mais il est clair que l'invention s'applique à tout autre type de générateur coopérant avec ùn actionneur à commande rotative ou coulissante. L'inverseur 76 peut être combiné avec un présélecteur 81 de calibre coopérant avec le contact 50 pour contrôler la durée d'excitation de l'électro-aimant 62 en fonction du calibre sélectionné par l'agent.The actuator 52 with electromechanical control of the switch 38 is suitable for the DC generator G comprising two accumulators 72, 74 associated with the inverter 76, but it is clear that the invention applies to any other type of generator cooperating with an actuator with rotary or sliding control. The inverter 76 can be combined with a caliber preselector 81 cooperating with the contact 50 to control the duration of excitation of the electromagnet 62 as a function of the caliber selected by the agent.

Sur l'arbre 58 d'entraînement de l'actionneur 52 est calé un disque 82 d'affichage de la position du curseur 36 qui indique à l'abonné le calibre sélectionné par la télécommande du commutateùr 38. Le calibre affiché au disque 82 correspondant à la puissance souscrite pilotée depuis le coffret 14 par le présélecteur 81 du générateur G portable.On the drive shaft 58 of the actuator 52 is wedged a disc 82 for displaying the position of the cursor 36 which indicates to the subscriber the rating selected by the remote control of the switch 38. The rating displayed on the corresponding disc 82 at the subscribed power controlled from the box 14 by the preselector 81 of the portable generator G.

Le fonctionnement du disjoncteur 10 équipé du commutateur 38 de calibre télécommandé est le suivant :

  • Pour un calibre prédéterminé du disjoncteur 10, le bloc déclencheur 28 détecte les courants de surcharge, de court-circuit, et les défauts différentiels, et provoque l'excitation du relais 26 de déclenchement entraînant l'ouverture des contacts 18, 20 par l'intermédiaire du mécanisme 16. Le réarmement manuel du disjoncteur 10 s'opère par enfoncement du bouton de réarmement 24.
The operation of the circuit breaker 10 fitted with the remote-controlled caliber switch 38 is as follows:
  • For a predetermined size of the circuit breaker 10, the trip unit 28 detects overload, short-circuit currents, and faults differentials, and causes excitation of the trip relay 26 causing the opening of the contacts 18, 20 via the mechanism 16. The manual reset of the circuit breaker 10 is effected by depressing the reset button 24.

La variation de la puissance souscrite intervient par le changement de calibre du dispositif de sélection 34 du disjoncteur 10. L'agent procède au raccordement temporaire du générateur G portable au circuit de liaison 40 par embrochage de la prise 48 dans la borne 46 du coffret 14. Le calibre demandé est affiché par l'agent au présélecteur 81 et le contact 50 vient en position de mise en circuit du générateur G. Dans une première étape, l'inverseur 76 se trouve sur le plot B, de manière à assurer l'excitation de l'électro-aimant 66 de déverrouillage du cliquet 56 provoquant le rappel du commutateur 38 sur le calibre maximum de 90 A correspondant à la position du curseur 36 sur le plot 4 du dispositif de sélection 34. Dans une deuxième étape, l'inverseur 76 est actionné sur le plot A pour l'excitation de l'électro-aimant 62 commandant l'avance pas à pas de la roue à rochet 54. Le nombre de pas de la roue 54 est fonction de la durée d'excitation de l'électro-aimant 62 fixée par le présélecteur 81. Ce dernier ouvre alors le contact 50, et la position du curseur 36 sur l'un des plots 1, 2, 3 ou 4 correspond au calibre demandé. La télécommande du commutateur 38 depuis le coffret 14 est alors terminée, et l'agent retire la prise 48 pour la déconnexion du générateur G. Le nouveau calibre sélectionné du disjoncteur 10 est affiché par le disque 82 de signalisation du commutateur 38.The variation of the subscribed power intervenes by the change of caliber of the selection device 34 of the circuit breaker 10. The agent proceeds to the temporary connection of the portable generator G to the connection circuit 40 by plugging the socket 48 into the terminal 46 of the box 14 The caliber requested is displayed by the agent at the preselector 81 and the contact 50 comes to the generator G switching position. In a first step, the inverter 76 is located on the pad B, so as to ensure the excitation of the electromagnet 66 for unlocking the pawl 56 causing the switch 38 to return to the maximum rating of 90 A corresponding to the position of the cursor 36 on the pad 4 of the selection device 34. In a second step, the reverser 76 is actuated on pad A for the excitation of the electromagnet 62 controlling the step-by-step advance of the ratchet wheel 54. The number of steps of the wheel 54 is a function of the duration of excitation of the electromagnet 62 fixed by the presel ector 81. The latter then opens the contact 50, and the position of the cursor 36 on one of the pads 1, 2, 3 or 4 corresponds to the requested rating. The remote control of the switch 38 from the box 14 is then finished, and the agent withdraws the socket 48 for disconnecting the generator G. The new selected rating of the circuit breaker 10 is displayed by the signaling disc 82 of the switch 38.

Claims (10)

1. Multi-size branch circuit breaker inserted downstreams of an energy counter (12) in an alternating distribution network for the supply of an electrical low-voltage installation of a subscriber, the size changing of the circuit breaker (10) being remotely controlled by the official agent from the housing (14) of the counter (12) by means of a connection circuit (40) with guide wires (42, 44) arranged between the housing (14) and the circuit breaker (10), characterized by the fact that the connection circuit (40) is connected electrically with a branch terminal (46) disposed insides the housing (14) and intended for the temporary connection by the agent of a portable control generator (G) able to emit through said circuit (40). a size changing signal to a control switch (38) associated to the release assembly (28) of circuit breaker (10).
2. Multi-size branch circuit breaker according to claim 1, characterized by the fact that the rating switch (38) is coupled mechanically with the slider (36) of a selection device (34) with resistances (R1. R2, R3, R4 ...) of the release assembly (28), and is constituted of a step-by-step actuator (52) with electromechanical rotation or translation control, said actuator (52) being juxtaposed to the housing of the circuit breaker (10) or incorporated in the last.
3. Multi-size branch circuit breaker according to claim 2, comprising an electronic release assembly (28) for detecting the overload currents, exceeding the size selected by the control switch (38) in order to send a release signal to a relay (26) associated with the control mechanism (16) of the circuit breaker (10), characterized by the fact that the step-by-step actuator (52) of the control switch (38) comprises a ratched wheel (54) the advance of which is controlled by a first electromagnet (62) supplied by the generator (G) when changing the size, the ratched-wheel (54) being locked at each step by a retaining claw (56) submitted to the action of a reset spring (57).
4. Branch circuit breaker according to claim 3, characterized by the fact that the actuator (52) is provided with a second electromagnet (66) the excitation of which by the generator (G) induces the unlocking of the claw (56) and the automatic return of the control switch (38) to the maximum size of the circuit breaker (10), for instance 90 Amperes.
5. Branch circuit breaker according to claim 4, characterized by the fact that the first and second electromagnet (62, 66) comprises each a movable armature, more particularly a plunger core or a pivotable plate, linked to the claw (56) of the ratched-wheel (54).
6. Branch circuit breaker according to one of the preceding claims 1 to 5, characterized by the fact that the portable generator (G) comprises a connection socket (48) pluggable into the terminal (46) of the connection circuit (40) and a size preselector (81) cooperating with a contact (50) for connecting up the generator (G).
7. Branch circuit breaker according to claim 6, characterized by the fact that the generator (G) carries direct current or unidirectional current, and that the preselector (81) is arranged to ensure successively the excitation of the second electromagnet (66) for unlocking of the claw (56), and than of the first advance electromagnet (62) of the ratched-wheel (54), the excitation time of the first electromagnet (62) determinating the number of steps of the actuator (52) corresponding to the size indicated on the preselector (81).
8. Branch circuit breaker according to claim 7, characterized by the fact that the preselector (81) cooperates with a reversing switch (76) of the polarity sense of the generator (G).
9. Branch circuit breaker according to claim 8, characterized by the fact that the first and second electromagnets (62, 66) of the actuator (52) are connected with two circuits connected electrically in parallel, each circuit comprising a diode (78, 80) in series with the control winding flown through alternately by the excitation current of the generator (G) according to the position of the reversing switch (76).
10. Branch circuit breaker according to anyone of the claims 2-9, characterized by the fact that on the driving shaft of the slider (36) is fastened a read-out disk of the size selected by the control switch (38).
EP19820401989 1981-11-06 1982-10-27 Low-voltage branch circuit breaker provided with a remotely controlled calibration switch Expired EP0079270B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8120992 1981-11-06
FR8120992A FR2516303A1 (en) 1981-11-06 1981-11-06 LOW VOLTAGE CONNECTION CIRCUIT BREAKER WITH REMOTE SIZE SWITCH

Publications (2)

Publication Number Publication Date
EP0079270A1 EP0079270A1 (en) 1983-05-18
EP0079270B1 true EP0079270B1 (en) 1985-09-18

Family

ID=9263847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820401989 Expired EP0079270B1 (en) 1981-11-06 1982-10-27 Low-voltage branch circuit breaker provided with a remotely controlled calibration switch

Country Status (5)

Country Link
EP (1) EP0079270B1 (en)
DE (1) DE3266422D1 (en)
ES (1) ES517100A0 (en)
FR (1) FR2516303A1 (en)
PT (1) PT75714B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534063A1 (en) * 1982-09-30 1984-04-06 Merlin Gerin CONNECTION CIRCUIT BREAKER WITH ELECTRONIC TRIGGER AND TELECALIBRATION
EP2463873A1 (en) * 2010-12-13 2012-06-13 Eaton Industries GmbH Additional motorised adjustment of the setting buttons of remote controlled electronics on industrial switches
EP2463886A1 (en) * 2010-12-13 2012-06-13 Eaton Industries GmbH Method for displaying device parameter values of industrial switch devices

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4213165A (en) * 1978-03-16 1980-07-15 Square D Company Circuit breaker having an electronic fault sensing and trip initiating unit
FR2474777B1 (en) * 1980-01-25 1985-10-04 Alberti Rosette IMPROVEMENT IN RELIEF RELAYS

Also Published As

Publication number Publication date
PT75714A (en) 1982-11-01
FR2516303A1 (en) 1983-05-13
PT75714B (en) 1985-01-02
DE3266422D1 (en) 1985-10-24
FR2516303B1 (en) 1983-12-23
ES8308148A1 (en) 1983-08-01
ES517100A0 (en) 1983-08-01
EP0079270A1 (en) 1983-05-18

Similar Documents

Publication Publication Date Title
EP0367690B1 (en) Tripping circuit with test circuit and selfprotected remote control for opening
EP0493272A1 (en) Circuit breaker containing an interface card with a trip device
FR2832559A1 (en) CONTROL AND PROTECTION MODULE OF A SWITCHING DEVICE
US5095398A (en) Electrical circuit breaker protection device
EP0809267A3 (en) Circuit breaker incorporating trip coil as shunt resistor in parallel with current limiting polymer
EP0079271B1 (en) Branch circuit breaker with a load control by an operator module
EP0079270B1 (en) Low-voltage branch circuit breaker provided with a remotely controlled calibration switch
EP3709333B1 (en) Electrical device for powering a load or not according to the passing or blocking status of a control unit
FR2643195A1 (en) Process and device for protecting a circuit or electrical network with the aid of a differential-current circuit breaker
EP0320409B1 (en) Static release with external supply
FR2752479A1 (en) Differential electronic circuit breaker for electrical Protection
FR2482774A1 (en) POWER CIRCUIT BREAKER WITH ADJUSTABLE OPERATING THRESHOLD
EP0018867A2 (en) Protected electric power supply comprising a thyristor
EP0665623A1 (en) Test device for differential circuit breaker and differential circuit breaker containing the same
EP1573877A1 (en) Protective switch
EP3809440B1 (en) Device for protecting an alternating current electrical installation
EP4016777B1 (en) Electrical device for protecting an alternating current electrical installation
EP0105786B1 (en) Branch circuit breaker with an electronic trip device and remotely controlled calibration
FR2564648A1 (en) Circuit breaker with electronic trip and multiple ratings
EP2693585B1 (en) System for protecting a plurality of electrical outlets against short circuits, and electrical facility comprising such a protective system
EP3809441A1 (en) Device for protecting an alternating current electrical installation
EP4068327A1 (en) Electrical device for allowing or not allowing an alternating current source to supply a charge, according to orders received by radiofrequency, and circuit comprising same
EP0366063A1 (en) Electrical power supply for a protection station of a three-phase transmission line
EP0509391A1 (en) Protection system for electric circuits
FR2459567A1 (en) ELECTRONIC RELAY WITH MAXIMUM INTENSITY

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH DE GB IT LI NL SE

17P Request for examination filed

Effective date: 19830929

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE CH DE GB IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19850918

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19850918

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19850930

REF Corresponds to:

Ref document number: 3266422

Country of ref document: DE

Date of ref document: 19851024

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19911025

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19921031

Ref country code: CH

Effective date: 19921031

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19961018

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19961212

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19971013

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971027

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971031

BERE Be: lapsed

Owner name: MERLIN GERIN

Effective date: 19971031

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19971027

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991001