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EP0693764A1 - Electrical circuit breaker with electromagnetic actuator for H.T. - Google Patents

Electrical circuit breaker with electromagnetic actuator for H.T. Download PDF

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Publication number
EP0693764A1
EP0693764A1 EP95410065A EP95410065A EP0693764A1 EP 0693764 A1 EP0693764 A1 EP 0693764A1 EP 95410065 A EP95410065 A EP 95410065A EP 95410065 A EP95410065 A EP 95410065A EP 0693764 A1 EP0693764 A1 EP 0693764A1
Authority
EP
European Patent Office
Prior art keywords
pallet
air gap
striker
circuit breaker
contact arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95410065A
Other languages
German (de)
French (fr)
Other versions
EP0693764B1 (en
Inventor
Jean-Yves Amblard
François Bucci
Philippe Delcambre
Eric Domejean
Alain Menier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric SE
Original Assignee
Schneider Electric SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schneider Electric SE filed Critical Schneider Electric SE
Publication of EP0693764A1 publication Critical patent/EP0693764A1/en
Application granted granted Critical
Publication of EP0693764B1 publication Critical patent/EP0693764B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H2009/305—Means for extinguishing or preventing arc between current-carrying parts including means for screening for arc gases as protection of mechanism against hot arc gases or for keeping arc gases in the arc chamber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2472—Electromagnetic mechanisms with rotatable armatures

Definitions

  • the object of the invention is to provide an electrical circuit breaker for high performance, insensitive to any phenomenon of external manifestations.
  • the circuit breaker according to the invention is characterized in that the striker is formed by an elongated piece situated between the magnetic circuit and the first compartment, and cooperating with the means for supporting the contact arm to close the passage between the first and second compartments after attraction of the pallet, and to free said passage after the return of the pallet to the separated position.
  • the axis of connection of the striker on the pallet is disposed in an intermediate zone between the axis of articulation of the pallet, and the second air gap.
  • the striker constitutes a screen which adapts to the internal part of the housing. The passage between these two compartments is advantageously located above the first air gap opposite the fixed contact.
  • the means for supporting the contact arm comprise drive stops cooperating with the mechanism, and a bearing face cooperating with the free end of the striker to delimit said passage
  • Figure 1 is a schematic elevational view of the circuit breaker equipped with the actuator according to the invention.
  • FIG. 2 represents a perspective view of the actuator of FIG. 1.
  • Figure 3 is a sectional view through the median plane of the actuator of Figure 2, the paddle and the striker being in the inactive position.
  • Figure 4 shows a plan view of Figure 3.
  • Figure 5 is an identical view to Figure 3, in the active position of the pallet and the striker.
  • Figure 6 is a plan view of Figure 5.
  • a circuit breaker 1 comprises a housing 2 containing a fixed contact 3, a movable contact 4 mounted at the end of a movable contact arm 5, a breaking chamber 6 and various elements of electrical connections (not shown) used to connect the fixed and movable contact to terminals (not shown).
  • the circuit breaker further includes an electromagnetic actuator AE causing the circuit breaker to trip in the event of a fault, and rapid separation of the fixed and mobile contacts 3, 4.
  • the electromagnetic actuator AE comprises a yoke 7 made of magnetic material, a swivel pallet 8, and a striker 9.
  • the cylinder head or magnetic circuit 7 in the form of an H comprises a cylindrical core 10 surrounded by a coil 34, and two flanks 11, 12 arranged parallel to each other, and extending perpendicular to the axis of the core 10
  • the side 11 has a first end 13 directed towards the pallet 8 and a second opposite end 14.
  • the other sidewall 12 comprises a third end (not shown) directed towards the pallet 8 and an opposite fourth end 16.
  • the first end 13 and the third end form polar planar faces cooperating with the flat face 18 of the pallet 8.
  • the second and fourth ends 14, 16 form flat faces arranged opposite one another to delimit a first air gap 17.
  • the pallet 8 When the electromagnetic actuator AE is at rest, the pallet 8 is located at a certain distance from the face 18 of the cylinder head 7 by forming a second air gap 19.
  • the pivoting pallet 8 is mounted on a hinge pin 21 and the movable contact arm 5 is also pivotally mounted by means of another articulation axis 22.
  • the fixed contact 3 is located at the base of the air gap 17, and at least part of the movable contact arm 5 extends through the air gap 17.
  • the striker 9 is in the form of an elongated substantially rectangular part, one end of which is articulated on a connecting pin 23 arranged on the pallet 8, and the other free end 24 of which is situated near the movable contact arm 5, and on the side opposite the fixed contact 3.
  • the width of the striker roughly corresponds to the width of the housing.
  • the contact arm 5 is carried by support means 26 arranged opposite the movable contact 4, and having drive stops cooperating with the mechanism (not shown) to ensure closure and the separation of the contacts 3, 4.
  • the support means 26 additionally comprise a bearing face 36 cooperating with the free end 24 of the striker 9.
  • the connecting axis 23 of the striker 9 on the pallet 8 is located in an intermediate zone between the articulation axis 21 and the second air gap 19.
  • the free end 24 of the striker 9 is separated from the bearing face 36 by a passage 28 in the form of a slot whose thickness is variable as a function of the state of magnetization of the electromagnetic actuator AE.
  • the striker 9 in addition to its acceleration function of the contact arm 5 , thus plays a role of separation screen between the two compartments, and the slot 28 remains closed in the attracted position of the pallet 8, that is to say as long as the current in the coil exceeds a predetermined value. Closing the slot 28 during the arc extinction phase prevents any gas backflow towards the upper compartment 30, and in particular towards the orifice for passage of the lever, so as to avoid any phenomenon of external manifestations at the front of the housing 2.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Electromagnets (AREA)
  • Vehicle Body Suspensions (AREA)
  • Keying Circuit Devices (AREA)
  • Relay Circuits (AREA)

Abstract

The circuit breaker is fitted with an electromagnetic actuator (AE), comprising a magnetic circuit (7) in the form of an `H'. The circuit includes a first air gap (17) in which a mobile contact arm (5) is suspended and a second air gap (19) associated with a pivoting paddle (8). A hammer (9) is connected to the paddle (8) to reinforce the opening action of the contact arm (5). The hammer (9) is formed by an extended piece situated between the magnetic circuit (9) and the first compartment (30). This cooperates with the support (26) of the contact arm to block the passage between the first and second compartments after attraction of the paddle, and to free the passage after the return of the paddle to its separated position. <IMAGE>

Description

L'invention est relative à un disjoncteur électrique à boîtier isolant moulé comprenant un premier compartiment de logement du mécanisme de commande, et un deuxième compartiment renfermant un actionneur électromagnétique, et des contacts séparables associés à une chambre de coupure , ledit actionneur ayant un circuit magnétique , et comportant:

  • un noyau sur lequel est monté une bobine d'excitation,
  • un premier entrefer dans lequel s'étend le bras de contact mobile pour occuper une position de repos dans l'état de fermeture des contacts, et une position active de séparation des contacts lorsque l'intensité du courant dépasse un seuil prédéterminé,
  • une palette pivotante coopérant avec des faces polaires du circuit magnétique pour former un deuxième entrefer situé à l'opposé du premier entrefer,
  • et un percuteur associé à la palette pour agir sur le bras de contact dans le sens de l'ouverture après attraction magnétique de la palette contre les faces polaires.
The invention relates to an electrical circuit breaker with molded insulating housing comprising a first compartment for housing the control mechanism, and a second compartment containing an electromagnetic actuator, and separable contacts associated with a breaking chamber, said actuator having a magnetic circuit. , and comprising:
  • a core on which an excitation coil is mounted,
  • a first air gap in which the movable contact arm extends to occupy a rest position in the closed state of the contacts, and an active position for separating the contacts when the current intensity exceeds a predetermined threshold,
  • a pivoting pallet cooperating with polar faces of the magnetic circuit to form a second air gap located opposite the first air gap,
  • and a striker associated with the pallet to act on the contact arm in the direction of opening after magnetic attraction of the pallet against the pole faces.

L'emploi dans un disjoncteur d'un actionneur électromagnétique pour provoquer la séparation rapide des contacts permet d'obtenir des pouvoirs de coupure très importants. L'extinction de l'arc dans la chambre de coupure génère néanmoins des gaz ionisés susceptibles de produire des phénomènes de manifestations extérieures. Ces phénomènes sont particulièrement indésirables du côté de la face avant, dus à l'échappement de gaz ionisés par l'orifice autorisant le débattement de la manette.The use of an electromagnetic actuator in a circuit breaker to cause the rapid separation of the contacts makes it possible to obtain very high breaking powers. The extinction of the arc in the breaking chamber nevertheless generates ionized gases capable of producing phenomena of external manifestations. These phenomena are particularly undesirable on the side of the front face, due to the escape of ionized gases through the orifice allowing the movement of the lever.

L'objet de l'invention consiste à réaliser un disjoncteur électrique pour hautes performances, insensible à tout phénomène de manifestations extérieures.The object of the invention is to provide an electrical circuit breaker for high performance, insensitive to any phenomenon of external manifestations.

Le disjoncteur selon l'invention est caractérisé en ce que le percuteur est formé par une pièce allongée située entre le circuit magnétique et le premier compartiment, et coopérant avec les moyens de support du bras de contact pour obturer le passage entre les premier et deuxième compartiments après attraction de la palette, et pour libérer ledit passage après le rappel de la palette vers la position écartée.The circuit breaker according to the invention is characterized in that the striker is formed by an elongated piece situated between the magnetic circuit and the first compartment, and cooperating with the means for supporting the contact arm to close the passage between the first and second compartments after attraction of the pallet, and to free said passage after the return of the pallet to the separated position.

Selon un mode de réalisation préférentiel de l'invention, l'axe de liaison du percuteur sur la palette est disposé dans une zone intermédiaire entre l'axe d'articulation de la palette, et le deuxième entrefer. Le percuteur constitue un écran qui s'adapte à la partie interne du boîtier. Le passage entre ces deux compartiments est avantageusement situé au-dessus du premier entrefer à l'opposé du contact fixe.According to a preferred embodiment of the invention, the axis of connection of the striker on the pallet is disposed in an intermediate zone between the axis of articulation of the pallet, and the second air gap. The striker constitutes a screen which adapts to the internal part of the housing. The passage between these two compartments is advantageously located above the first air gap opposite the fixed contact.

Selon une caractéristique de l'invention, les moyens de support du bras de contact comportent des butées d'entraînement coopérant avec le mécanisme, et une face d'appui coopérant avec l'extrémité libre du percuteur pour délimiter ledit passageAccording to a characteristic of the invention, the means for supporting the contact arm comprise drive stops cooperating with the mechanism, and a bearing face cooperating with the free end of the striker to delimit said passage

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

La figure 1 est une vue schématique en élévation du disjoncteur équipé de l'actionneur selon l'invention.Figure 1 is a schematic elevational view of the circuit breaker equipped with the actuator according to the invention.

La figure 2 représente une vue en perspective de l'actionneur de la figure 1.FIG. 2 represents a perspective view of the actuator of FIG. 1.

La figure 3 est une vue en coupe par le plan médian de l'actionneur de la figure 2, la palette et le percuteur étant en position inactive.Figure 3 is a sectional view through the median plane of the actuator of Figure 2, the paddle and the striker being in the inactive position.

La figure 4 montre une vue en plan de la figure 3.Figure 4 shows a plan view of Figure 3.

La figure 5 est une vue identique de la figure 3, en position active de la palette et du percuteur.Figure 5 is an identical view to Figure 3, in the active position of the pallet and the striker.

La figure 6 est une vue en plan de la figure 5.Figure 6 is a plan view of Figure 5.

En référence à la figure 1, un disjoncteur 1 comprend un boîtier 2 renfermant un contact fixe 3, un contact mobile 4 monté à l'extrémité d'un bras de contact mobile 5, une chambre de coupure 6 et divers éléments de connexions électriques (non représentés) permettant de relier les contact fixe et mobile à des bornes (non représentées). Le disjoncteur comporte en plus un actionneur électromagnétique AE provoquant en cas de défaut le déclenchement du disjoncteur, et la séparation rapide des contacts fixe et mobile 3, 4.With reference to FIG. 1, a circuit breaker 1 comprises a housing 2 containing a fixed contact 3, a movable contact 4 mounted at the end of a movable contact arm 5, a breaking chamber 6 and various elements of electrical connections ( not shown) used to connect the fixed and movable contact to terminals (not shown). The circuit breaker further includes an electromagnetic actuator AE causing the circuit breaker to trip in the event of a fault, and rapid separation of the fixed and mobile contacts 3, 4.

L'actionneur électromagnétique AE comprend une culasse 7 en matériau magnétique, une palette 8 pivotante, et un percuteur 9.The electromagnetic actuator AE comprises a yoke 7 made of magnetic material, a swivel pallet 8, and a striker 9.

Sur la figure 2, la culasse ou circuit magnétique 7 en forme de H, comporte un noyau 10 cylindrique entouré par une bobine 34, et deux flancs 11, 12 disposés parallèlement entre eux, et s'étendant perpendiculairement à l'axe du noyau 10. Le flanc 11 présente une première extrémité 13 dirigée vers la palette 8 et une seconde extrémité opposée 14. L'autre flanc 12 comprend une troisième extrémité (non représentée) dirigée vers la palette 8 et une quatrième extrémité opposée 16. La première extrémité 13 et la troisième extrémité forment des faces polaires coplanaires coopérant avec la face plane 18 de la palette 8. Les seconde et quatrième extrémités 14, 16 forment des faces planes disposées en regard l'une de l'autre pour délimiter un premier entrefer 17.In FIG. 2, the cylinder head or magnetic circuit 7 in the form of an H, comprises a cylindrical core 10 surrounded by a coil 34, and two flanks 11, 12 arranged parallel to each other, and extending perpendicular to the axis of the core 10 The side 11 has a first end 13 directed towards the pallet 8 and a second opposite end 14. The other sidewall 12 comprises a third end (not shown) directed towards the pallet 8 and an opposite fourth end 16. The first end 13 and the third end form polar planar faces cooperating with the flat face 18 of the pallet 8. The second and fourth ends 14, 16 form flat faces arranged opposite one another to delimit a first air gap 17.

Lorsque l'actionneur électromagnétique AE est au repos, la palette 8 est située à une certaine distance par rapport à la face 18 de la culasse 7 en formant un deuxième entrefer 19. La palette 8 pivotante est montée sur un axe d'articulation 21 et le bras de contact mobile 5 est également monté à pivotement grâce à un autre axe d'articulation 22. Le contact fixe 3 se trouve à la base de l'entrefer 17, et au moins une partie du bras de contact mobile 5 s'étend au travers de l'entrefer 17. Le percuteur 9 se présente sous la forme d'une pièce allongée sensiblement rectangulaire dont une extrémité est articulée sur un axe de liaison 23 agencé sur la palette 8, et dont l'autre extrémité libre 24 est située à proximité du bras de contact mobile 5, et du côté opposé au contact fixe 3.When the electromagnetic actuator AE is at rest, the pallet 8 is located at a certain distance from the face 18 of the cylinder head 7 by forming a second air gap 19. The pivoting pallet 8 is mounted on a hinge pin 21 and the movable contact arm 5 is also pivotally mounted by means of another articulation axis 22. The fixed contact 3 is located at the base of the air gap 17, and at least part of the movable contact arm 5 extends through the air gap 17. The striker 9 is in the form of an elongated substantially rectangular part, one end of which is articulated on a connecting pin 23 arranged on the pallet 8, and the other free end 24 of which is situated near the movable contact arm 5, and on the side opposite the fixed contact 3.

La largeur du percuteur correspond sensiblement à la largeur du boîtier.The width of the striker roughly corresponds to the width of the housing.

En référence aux figures 3 à 6, le bras de contact 5 est porté par des moyens de support 26 agencés à l'opposé du contact mobile 4, et ayant des butées d'entraînement coopérant avec le mécanisme (non représenté) pour assurer la fermeture et la séparation des contacts 3, 4. Les moyens de support 26 comportent en plus une face d'appui 36 coopérant avec l'extrémité libre 24 du percuteur 9.Referring to Figures 3 to 6, the contact arm 5 is carried by support means 26 arranged opposite the movable contact 4, and having drive stops cooperating with the mechanism (not shown) to ensure closure and the separation of the contacts 3, 4. The support means 26 additionally comprise a bearing face 36 cooperating with the free end 24 of the striker 9.

L'axe de liaison 23 du percuteur 9 sur la palette 8 est situé dans une zone intermédiaire entre l'axe d'articulation 21 et le deuxième entrefer 19. L'extrémité libre 24 du percuteur 9 est séparée de la face d'appui 36 par un passage 28 en forme de fente dont l'épaisseur est variable en fonction de l'état de magnétisation de l'actionneur électromagnétique AE.The connecting axis 23 of the striker 9 on the pallet 8 is located in an intermediate zone between the articulation axis 21 and the second air gap 19. The free end 24 of the striker 9 is separated from the bearing face 36 by a passage 28 in the form of a slot whose thickness is variable as a function of the state of magnetization of the electromagnetic actuator AE.

Dans la position de fermeture des contacts 3, 4 (figures 3 et 4), le flux magnétique dans le deuxième entrefer 19 suite au passage du courant nominal dans la bobine de l'actionneur AE, est insuffisant pour attirer la palette 8 contre les surfaces polaires 13 de la culasse 7. La palette 8 est maintenue en position écartée sous l'action de son ressort de rappel, et le percuteur 9 reste également immobile en position inactive. La fente 28 entre le percuteur 9 et les moyens de support 26 du bras 5 est maximum, et permet la communication de la zone des contacts avec le compartiment supérieur 30 de logement du mécanisme 31.In the closed position of the contacts 3, 4 (Figures 3 and 4), the magnetic flux in the second air gap 19 following the passage of the nominal current through the coil of the actuator AE, is insufficient to attract the pallet 8 against the surfaces polar 13 of the cylinder head 7. The pallet 8 is held in the separated position under the action of its return spring, and the striker 9 also remains stationary in the inactive position. The slot 28 between the striker 9 and the support means 26 of the arm 5 is maximum, and allows communication of the contact area with the upper compartment 30 for housing the mechanism 31.

En présence d'un courant de court-circuit, l'accroissement du flux magnétique dans la culasse 7 engendre des forces électromagnétiques importantes dans le premier entrefer 17, sollicitant le bras de contact 5 vers la position d'ouverture (figures 5 et 6). La palette 8 pivotante est attirée simultanément contre les surfaces polaires 13 du deuxième entrefer 19, et entraîne le percuteur 9 en translation dans le même sens. La venue en engagement de l'extrémité 28 contre les moyens de support 26 accélère le pivotement du bras de contact 5 vers la position d'ouverture, et obture en même temps la fente 28. Les gaz ionisés engendrés par l'arc lors de la séparation des contacts 3, 4 ne peuvent s'échapper vers le compartiment supérieur 30, et restent confinés dans le compartiment inférieur 32 de logement de la chambre de coupure 6. Le percuteur 9 en plus de sa fonction d'accélération du bras de contact 5, joue ainsi un rôle d'écran de séparation entre les deux compartiments, et la fente 28 reste obturée en position attirée de la palette 8, c'est à dire aussi longtemps que le courant dans la bobine dépasse une valeur prédéterminée. L'obturation de la fente 28 au cours de la phase d'extinction de l'arc empêche tout refoulement de gaz vers le compartiment supérieur 30, et en particulier vers l'orifice de passage de la manette, de manière à éviter tout phénomène de manifestations extérieures au niveau de la face avant du boîtier 2.In the presence of a short-circuit current, the increase in magnetic flux in the cylinder head 7 generates significant electromagnetic forces in the first air gap 17, urging the contact arm 5 towards the open position (Figures 5 and 6) . The pivoting pallet 8 is attracted simultaneously against the pole surfaces 13 of the second air gap 19, and drives the striker 9 in translation in the same direction. The coming into engagement of the end 28 against the support means 26 accelerates the pivoting of the contact arm 5 towards the open position, and at the same time closes the slot 28. The ionized gases generated by the arc during the separation of the contacts 3, 4 cannot escape towards the upper compartment 30, and remain confined in the lower compartment 32 housing the breaking chamber 6. The striker 9 in addition to its acceleration function of the contact arm 5 , thus plays a role of separation screen between the two compartments, and the slot 28 remains closed in the attracted position of the pallet 8, that is to say as long as the current in the coil exceeds a predetermined value. Closing the slot 28 during the arc extinction phase prevents any gas backflow towards the upper compartment 30, and in particular towards the orifice for passage of the lever, so as to avoid any phenomenon of external manifestations at the front of the housing 2.

Claims (4)

Disjoncteur électrique à boîtier (2) isolant moulé comprenant un premier compartiment (30) de logement du mécanisme (31) de commande, et un deuxième compartiment (32) renfermant un actionneur électromagnétique (AE), et des contacts séparables (3, 4) associés à une chambre de coupure (6), ledit actionneur ayant un circuit magnétique (7), et comportant: - un noyau (10) sur lequel est monté une bobine (34) d'excitation, - un premier entrefer (17) dans lequel s'étend le bras de contact mobile (5) pour occuper une position de repos dans l'état de fermeture des contacts (3, 4), et une position active de séparation des contacts lorsque l'intensité du courant dépasse un seuil prédéterminé, - une palette (8) pivotante coopérant avec des faces polaires (13) du circuit magnétique (7) pour former un deuxième entrefer (19) situé à l'opposé du premier entrefer (17), - et un percuteur (9) associé à la palette (8) pour agir sur le bras de contact (5) dans le sens de l'ouverture après attraction magnétique de la palette (8) contre les faces polaires, caractérisé en ce que le percuteur (9) est formé par une pièce allongée située entre le circuit magnétique (7) et le premier compartiment (30), et coopérant avec les moyens de support (26) du bras de contact (5) pour obturer le passage (28) entre les premier et deuxième compartiments (30, 32) après attraction de la palette (8), et pour libérer ledit passage après le rappel de la palette (8) vers la position écartée.Electrical circuit breaker with molded insulating housing (2) comprising a first compartment (30) for housing the control mechanism (31), and a second compartment (32) containing an electromagnetic actuator (AE), and separable contacts (3, 4) associated with a switching chamber (6), said actuator having a magnetic circuit (7), and comprising: - a core (10) on which is mounted an excitation coil (34), - A first air gap (17) in which extends the movable contact arm (5) to occupy a rest position in the closed state of the contacts (3, 4), and an active position of contact separation when the current intensity exceeds a predetermined threshold, - a pivoting pallet (8) cooperating with pole faces (13) of the magnetic circuit (7) to form a second air gap (19) located opposite the first air gap (17), - and a striker (9) associated with the pallet (8) to act on the contact arm (5) in the direction of opening after magnetic attraction of the pallet (8) against the pole faces, characterized in that the striker (9) is formed by an elongated piece located between the magnetic circuit (7) and the first compartment (30), and cooperating with the support means (26) of the contact arm (5) for closing the passage (28) between the first and second compartments (30, 32) after attraction of the pallet (8), and to release said passage after the return of the pallet (8) to the separated position. Disjoncteur selon la revendication 1, caractérisé en ce que l'axe de liaison (23) du percuteur (9) sur la palette (8) est disposé dans une zone intermédiaire entre l'axe d'articulation (21) de la palette, et le deuxième entrefer (19).Circuit breaker according to claim 1, characterized in that the connecting pin (23) of the striker (9) on the pallet (8) is arranged in an intermediate zone between the articulation axis (21) of the pallet, and the second air gap (19). Disjoncteur selon la revendication 2, caractérisé en ce que le percuteur (9) constitue un écran qui s'adapte à la partie interne du boîtier (2), et que le passage (28) est situé au-dessus du premier entrefer (17) à l'opposé du contact fixe (3).Circuit breaker according to claim 2, characterized in that the striker (9) constitutes a screen which adapts to the internal part of the housing (2), and that the passage (28) is located above the first air gap (17) opposite the fixed contact (3). Disjoncteur selon l'une des revendications 1 à 3, caractérisé en ce que les moyens de support (26) du bras de contact (5) comportent des butées d'entraînement coopérant avec le mécanisme (31), et une face d'appui (36) coopérant avec l'extrémité libre (24) du percuteur pour délimiter ledit passage (28).Circuit breaker according to one of claims 1 to 3, characterized in that the support means (26) of the contact arm (5) comprise drive stops cooperating with the mechanism (31), and a bearing face ( 36) cooperating with the free end (24) of the striker to delimit said passage (28).
EP95410065A 1994-07-18 1995-06-29 Electrical circuit breaker with electromagnetic actuator for H.T. Expired - Lifetime EP0693764B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9409067A FR2722609B1 (en) 1994-07-18 1994-07-18 ELECTRIC CIRCUIT BREAKER WITH ELECTROMAGNETIC ACTUATOR FOR HIGH CALIBERS
FR9409067 1994-07-18

Publications (2)

Publication Number Publication Date
EP0693764A1 true EP0693764A1 (en) 1996-01-24
EP0693764B1 EP0693764B1 (en) 1999-03-24

Family

ID=9465633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95410065A Expired - Lifetime EP0693764B1 (en) 1994-07-18 1995-06-29 Electrical circuit breaker with electromagnetic actuator for H.T.

Country Status (9)

Country Link
EP (1) EP0693764B1 (en)
CN (1) CN1052332C (en)
AT (1) ATE178160T1 (en)
DE (1) DE69508482T2 (en)
ES (1) ES2131291T3 (en)
FR (1) FR2722609B1 (en)
HU (1) HU215878B (en)
RU (1) RU2144715C1 (en)
TR (1) TR199500864A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2768856A1 (en) * 1997-09-24 1999-03-26 Schneider Electric Sa ELECTROMAGNETIC TRIGGER CIRCUIT BREAKER WITH MOBILE FORK CONTACT PROPELLER

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2541569B2 (en) * 2011-06-29 2023-12-20 Hitachi Energy Ltd Dual current path for high rated currents
WO2018039891A1 (en) * 2016-08-30 2018-03-08 赵建平 Circuit breaker cradle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH87462A (en) * 1920-04-15 1920-12-01 Sprecher & Schuh Ag Self-triggering device on insert insulators of oil switches.
DE2945618A1 (en) * 1979-10-23 1981-05-07 BBC AG Brown, Boveri & Cie., Baden, Aargau Opening device for over-current switch - converts magnetic energy of monitored current into potential energy for release to open contacts
EP0225207A1 (en) * 1985-10-31 1987-06-10 Merlin Gerin Cinematic transmission chain between the control mechanism and the poles of an electric circuit breaker with a moulded insulating casing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH87462A (en) * 1920-04-15 1920-12-01 Sprecher & Schuh Ag Self-triggering device on insert insulators of oil switches.
DE2945618A1 (en) * 1979-10-23 1981-05-07 BBC AG Brown, Boveri & Cie., Baden, Aargau Opening device for over-current switch - converts magnetic energy of monitored current into potential energy for release to open contacts
EP0225207A1 (en) * 1985-10-31 1987-06-10 Merlin Gerin Cinematic transmission chain between the control mechanism and the poles of an electric circuit breaker with a moulded insulating casing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2768856A1 (en) * 1997-09-24 1999-03-26 Schneider Electric Sa ELECTROMAGNETIC TRIGGER CIRCUIT BREAKER WITH MOBILE FORK CONTACT PROPELLER
EP0905735A1 (en) * 1997-09-24 1999-03-31 Schneider Electric Sa Circuit breaker with electromagnetic trip device with actation for a mobile forked contact

Also Published As

Publication number Publication date
ATE178160T1 (en) 1999-04-15
DE69508482T2 (en) 1999-10-07
EP0693764B1 (en) 1999-03-24
FR2722609A1 (en) 1996-01-19
ES2131291T3 (en) 1999-07-16
RU2144715C1 (en) 2000-01-20
CN1118511A (en) 1996-03-13
RU95113114A (en) 1997-06-27
FR2722609B1 (en) 1996-08-30
TR199500864A2 (en) 1996-06-21
CN1052332C (en) 2000-05-10
HU9502111D0 (en) 1995-09-28
HU215878B (en) 1999-03-29
DE69508482D1 (en) 1999-04-29
HUT73314A (en) 1996-07-29

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