EP0332145B1 - Control device for a circuit breaker - Google Patents

Control device for a circuit breaker Download PDF

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Publication number
EP0332145B1
EP0332145B1 EP89104014A EP89104014A EP0332145B1 EP 0332145 B1 EP0332145 B1 EP 0332145B1 EP 89104014 A EP89104014 A EP 89104014A EP 89104014 A EP89104014 A EP 89104014A EP 0332145 B1 EP0332145 B1 EP 0332145B1
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EP
European Patent Office
Prior art keywords
spring
cylinder
cylindrical body
frame
piston
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 - Lifetime
Application number
EP89104014A
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German (de)
French (fr)
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EP0332145A1 (en
Inventor
Michel Perret
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Alstom Holdings SA
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GEC Alsthom SA
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Publication date
Application filed by GEC Alsthom SA filed Critical GEC Alsthom SA
Priority to AT89104014T priority Critical patent/ATE92669T1/en
Publication of EP0332145A1 publication Critical patent/EP0332145A1/en
Application granted granted Critical
Publication of EP0332145B1 publication Critical patent/EP0332145B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/3026—Charging means in which the closing spring charges the opening spring or vice versa
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H2003/3094—Power arrangements internal to the switch for operating the driving mechanism using spring motor allowing an opening - closing - opening [OCO] sequence

Definitions

  • the present invention relates to a circuit breaker control device, of the type comprising a tripping spring and a latching spring.
  • a motor supplies energy to a latching spring.
  • the engagement spring then supplies part of its energy to a release spring; this energy transfer requires the presence of various mechanical organs and in particular a cam which at the end of energy transfer, must be erased to allow the subsequent operation of the trigger spring.
  • An object of the invention is to provide a control device in which the majority of the parts has a common axis of symmetry, which provides advantages in terms of economy of construction and assembly.
  • FIG. 1 there is a movable part 1 comprising a rod 1A connected to the control rod not shown of the circuit breaker to be controlled.
  • the movable part further comprises a cylinder 1B, of internal diameter D1, provided with an outer ring 1C serving to support a first end of a spring 2 which constitutes the trigger spring.
  • the other end of the spring rests on a frame 3 serving also of guide piece for the cylinder 1B and the rod 1A.
  • a crown 1D on the rod 1A serves as an end-of-travel stop for the movable part during the tripping phase of the circuit breaker.
  • a part 4 which comprises a body of revolution consisting of a cylindrical body having two coaxial cylindrical portions 4A, 4'A and a piston 4B.
  • the piston 4B defines with the cylinder 1B a variable volume V1.
  • the piston is sealed using a sliding seal 5.
  • the cylindrical portion 4A is guided by a fixed part 7 secured to the frame of the device and carrying a crown 7A sliding in the cylindrical portion 4'A and serving firstly to support a first end of a second spring 8 and on the other hand for sealing tight to the volume V2 delimited by the cylindrical portion 4A and the piston 4B.
  • the diameter D2 of the crown 7A is equal to the internal diameter D1 of the cylinder 1B.
  • the diameter of the cylindrical portion 4′A is greater than that of the cylindrical portion 4A.
  • the seal is ensured by a seal 9.
  • the spring 8 is the engagement spring; its second end rests on the piston 4B.
  • the piston 4B has an opening 10 which can be closed by a valve 11 pushed by a spring 12 resting on the fixed part 7 and guided by a rod 11A sliding in the part 7 in leaktight manner thanks to a seal 7B.
  • the piston 4B further comprises a valve 13 allowing passage from volume V2 to volume V1 and preventing passage in the opposite direction.
  • the volumes V1 and V2 are filled with a liquid 6 such as cylinder oil.
  • control device The operation of the control device is described below.
  • the trigger spring is relaxed (the circuit breaker is open) and the stop 1D is supported on the frame; the volumes V1 and V2 are filled with liquid, the valve 11 is closed by pressing the spring 12; the interlocking spring 8 is bandaged and the cylindrical portion 4A is maintained by the attachment of the electromagnet 20.
  • the electromagnet 20 which releases the pin 4C is actuated, the spring 8 expands (FIG. 2) and pushes the piston 4B which, by relying on the liquid of the volume V1, drives the moving part 1 which causes the drive of the rod 1A (closing of the circuit breaker) and the compression of the trigger spring 2.
  • the spring 12 pressed the valve against its seat, thus ensuring the tightness of the volume V1.
  • the stroke of the valve 11 is less than the compression stroke of the spring 8; as soon as the stroke of the valve 11 is finished, by contacting an end-of-stroke stop 11A against the fixed part 7, the opening 10 is released and the liquid of the volume V1 passes into the volume V2. The passage is accelerated thanks to the vacuum created under the piston 4B.
  • the oil has completely filled volume V2. Its surface 22 is surmounted by a vacuum height H equal to the stroke of the piston, itself equal to the stroke of the rod 1A.
  • the electromagnet 18 is actuated and releases the attachment of the stop 1C.
  • the spring 2 relaxes and drives the movable part 1 secured to the operating rod of the circuit breaker.
  • the cam 16 drives the stop 4D causing the part 4 to move with compression of the springs 8 and 12 until the part 4 is hooked by its stop 4C to the electromagnet 20.
  • valve 11 is again pressed against its seat, the liquid passing from the volume V2 to the volume V1 by the valve 13.
  • the circuit breaker In the position of FIG. 5, the circuit breaker is ready to carry out an open-close-open cycle (OFO), the first opening taking place as described with reference to FIG. 4, the closing being carried out as described with reference to the figures. 2 and 3, the second opening operating as described with reference to FIG. 4.
  • OFO open-close-open cycle
  • the device of the invention achieves the goals set and in particular a simple and reliable construction and high efficiency.
  • the device can be coupled to the mechanical energy storage device with low latching force described in French patent application No. 87 03 037 filed March 17, 1987 in the name of the applicant.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Electronic Switches (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Breakers (AREA)

Abstract

Mechanical control device for a circuit-breaker comprising a locking spring (8) and an unlocking spring (2) and hydraulic means of transmitting part of the energy of the locking spring to the said unlocking spring, characterised in that it possesses a rotational symmetry. <IMAGE>

Description

La présente invention concerne un dispositif de commande de disjoncteur, du type comprenant un ressort de déclenchement et un ressort d'enclenchement.The present invention relates to a circuit breaker control device, of the type comprising a tripping spring and a latching spring.

Dans un dispositif de ce type, un moteur fournit de l'énergie à un ressort d'enclenchement. Le ressort d'enclenchement fournit ensuite une partie de son énergie à un ressort de déolenchement ; ce transfert d'énergie nécessite la présence de divers organes mécaniques et en particulier d'une came qui en fin de transfert d'énergie, doit s'effacer pour permettre le fonctionnement ultérieur du ressort de déclenchement.In a device of this type, a motor supplies energy to a latching spring. The engagement spring then supplies part of its energy to a release spring; this energy transfer requires the presence of various mechanical organs and in particular a cam which at the end of energy transfer, must be erased to allow the subsequent operation of the trigger spring.

Ces organes mécaniques sont sujets à des jeux et à usure nécessitant des réglages et un entretien et possèdent un mauvais rendement. Il est souhaitable de remplacer les organes mécaniques de transfert par des moyens exempts de jeu et d'usure.These mechanical parts are subject to play and wear requiring adjustments and maintenance and have poor performance. It is desirable to replace the mechanical transfer members by means free from play and wear.

Il a été proposé, en particulier par le document DT 2361972A1 qui divulgue les éléments techniques du préambule de la revendication 1, de réaliser une commande dans laquelle le ressort d'enclenchement transmet une partie de son énergie au ressort de déclenchement par voie hydraulique. Mais la réalisation proposée est complexe et onéreuse.It has been proposed, in particular by document DT 2361972A1 which discloses the technical elements of the preamble of claim 1, to carry out a command in which the engagement spring transmits part of its energy to the trigger spring hydraulically. But the proposed realization is complex and expensive.

Un but de l'invention est de réaliser un dispositif de commande dans lequel la majorité des pièces a un axe de symétrie commun, ce qui procure des avantages d' économie de réalisation et de montage.An object of the invention is to provide a control device in which the majority of the parts has a common axis of symmetry, which provides advantages in terms of economy of construction and assembly.

Ce but est atteint selon l'invention en réalisant un dispositif tel que défini dans la revendication 1 ci-après.This object is achieved according to the invention by producing a device as defined in claim 1 below.

L'invention sera bien comprise par la description ci-après d'un mode préféré de réalisation de l'invention, en référence au dessin annexé dans lequel :

  • la figure 1 est une vue schématique en coupe axiale d'un dispositif de commande selon l'invention, le ressort de déclenchement étant débandé et le ressort d'enclenchement bandé.
  • la figure 2 est une vue schématique du même dispositif de commande, en cours d'enclenchement.
  • la figure 3 est une vue schématique du même dispositif de commande en fin de phase d'enclenchement.
  • la figure 4 est une vue schématique du même dispositif de commande en fin de phase d'ouverture du disjoncteur, le ressort d'enclenchement détendu.
  • la figure 5 est une vue schématique du même dispositif de commande avec ressorts d'enclenchement et de déclenchement bandés.
The invention will be better understood from the description below of a preferred embodiment of the invention, with reference to the appended drawing in which:
  • Figure 1 is a schematic view in axial section of a control device according to the invention, the trigger spring being discharged and the engagement spring banded.
  • Figure 2 is a schematic view of the same control device, during engagement.
  • Figure 3 is a schematic view of the same control device at the end of the engagement phase.
  • Figure 4 is a schematic view of the same control device at the end of the circuit breaker opening phase, the tensioned release spring.
  • Figure 5 is a schematic view of the same control device with banded engagement and trigger springs.

Dans la figure 1, on distingue une partie mobile 1 comprenant une tige 1A reliée à la tige de commande non représentée du disjoncteur à commander.In Figure 1, there is a movable part 1 comprising a rod 1A connected to the control rod not shown of the circuit breaker to be controlled.

La partie mobile comprend en outre un cylindre 1B, de diamètre intérieur D1, munie d'une couronne extérieure 1C servant d'appui à une première extrémité d'un ressort 2 qui constitue le ressort de déclenchement.The movable part further comprises a cylinder 1B, of internal diameter D1, provided with an outer ring 1C serving to support a first end of a spring 2 which constitutes the trigger spring.

L'autre extrémité du ressort s'appuie sur un bâti 3 servant également de pièce de guidage pour le cylindre 1B et la tige 1A. Une couronne 1D sur la tige 1A sert de butée de fin de course de la partie mobile lors de la phase de déclenchement du disjoncteur.The other end of the spring rests on a frame 3 serving also of guide piece for the cylinder 1B and the rod 1A. A crown 1D on the rod 1A serves as an end-of-travel stop for the movable part during the tripping phase of the circuit breaker.

A l'intérieur du cylindre 1B peut coulisser une pièce 4 qui comprend un corps de révolution constitué d'un corps cylindrique ayant deux portions cylindriques coaxiales 4A, 4'A et d'un piston 4B. Le piston 4B délimite avec le cylindre 1B un volume variable V1. L'étanchéité du piston est obtenue grâce à un joint coulissant 5.Inside the cylinder 1B can slide a part 4 which comprises a body of revolution consisting of a cylindrical body having two coaxial cylindrical portions 4A, 4'A and a piston 4B. The piston 4B defines with the cylinder 1B a variable volume V1. The piston is sealed using a sliding seal 5.

La portion cylindrique 4A, est guidée par une pièce fixe 7 solidaire du bâti du dispositif et portant une couronne 7A coulissant dans la portion cylindrique 4'A et servant d'une part d'appui à une première extrémité d'un second ressort 8 et d'autre part de fermeture étanche au volume V2 délimité par la portion cylindrique 4A et le piston 4B. Le diamètre D2 de la couronne 7A est égal au diamètre intérieur D1 du cylindre 1B. Pour cela, le diamètre de la portion cylindrique 4′A est supérieur à celui de la portion cylindrique 4A. L'étanchéité est assurée par un joint 9. Le ressort 8 est le ressort d'enclenchement ; sa seconde extrémité s'appuie sur le piston 4B.The cylindrical portion 4A is guided by a fixed part 7 secured to the frame of the device and carrying a crown 7A sliding in the cylindrical portion 4'A and serving firstly to support a first end of a second spring 8 and on the other hand for sealing tight to the volume V2 delimited by the cylindrical portion 4A and the piston 4B. The diameter D2 of the crown 7A is equal to the internal diameter D1 of the cylinder 1B. For this, the diameter of the cylindrical portion 4′A is greater than that of the cylindrical portion 4A. The seal is ensured by a seal 9. The spring 8 is the engagement spring; its second end rests on the piston 4B.

Le piston 4B comporte une ouverture 10 pouvant être fermée par une valve 11 poussée par un ressort 12 s'appuyant sur la pièce fixe 7 et guidée par une tige 11A coulissant dans la pièce 7 de manière étanche grâce à un joint 7B.The piston 4B has an opening 10 which can be closed by a valve 11 pushed by a spring 12 resting on the fixed part 7 and guided by a rod 11A sliding in the part 7 in leaktight manner thanks to a seal 7B.

Le piston 4B comprend en outre un clapet 13 autorisant le passage du volume V2 au volume V1 et interdisant le passage en sens inverse.The piston 4B further comprises a valve 13 allowing passage from volume V2 to volume V1 and preventing passage in the opposite direction.

Les volumes V1 et V2 sont remplis d'un liquide 6 tel que l'huile de vérin.The volumes V1 and V2 are filled with a liquid 6 such as cylinder oil.

On a représenté schématiquement :

  • un moteur 15 entraînant une came 16 coopérant avec un ergot 4D du cylindre 4 pour assurer le réarmement de l'organe de commande,
  • un électro-aimant 18 pour déplacer un organe d'accrochage coopérant avec la couronne 1C pour libérer le ressort de déclenchement 2,
  • un électro-aimant 20 pour déplacer un organe d'accrochage coopérant avec un ergot 4C du cylindre 4 pour commander le fonctionnement du ressort d'enclenchement 8.
We have represented schematically:
  • a motor 15 driving a cam 16 cooperating with a lug 4D of the cylinder 4 to reset the control member,
  • an electromagnet 18 for moving a fastening member cooperating with the crown 1C to release the trigger spring 2,
  • an electromagnet 20 for moving a hooking member cooperating with a lug 4C of the cylinder 4 to control the operation of the engagement spring 8.

Le fonctionnement du dispositif de commande est décrit ci-après.The operation of the control device is described below.

Dans la figure 1, le ressort de déclenchement est détendu (le disjoncteur est ouvert) et la butée 1D est en appui sur le bâti ; les volumes V1 et V2 sont emplis de liquide, la valve 11 est fermée par appui du ressort 12; le ressort 8 d'enclenchement est bandé et la portion cylindrique 4A est maintenue par l'accrochage de l'électro-aimant 20.In Figure 1, the trigger spring is relaxed (the circuit breaker is open) and the stop 1D is supported on the frame; the volumes V1 and V2 are filled with liquid, the valve 11 is closed by pressing the spring 12; the interlocking spring 8 is bandaged and the cylindrical portion 4A is maintained by the attachment of the electromagnet 20.

Pour comprimer le ressort de déclenchement 2, (qui a une force inférieure à celle du ressort d'enclenchement 8), on actionne l'électro-aimant 20 qui libère l'ergot 4C, le ressort 8 se détend (figure 2) et pousse le piston 4B qui, en s'appuyant sur le liquide du volume V1, entraîne la pièce mobile 1 qui provoque l'entraînement de la tige 1A (fermeture du disjoncteur) et la compression du ressort de déclenchement 2. Pendant cette phase, le ressort 12 à plaqué la valve contre son siège, assurant ainsi l'étanchéité du volume V1.To compress the trigger spring 2, (which has a lower force than that of the engagement spring 8), the electromagnet 20 which releases the pin 4C is actuated, the spring 8 expands (FIG. 2) and pushes the piston 4B which, by relying on the liquid of the volume V1, drives the moving part 1 which causes the drive of the rod 1A (closing of the circuit breaker) and the compression of the trigger spring 2. During this phase, the spring 12 pressed the valve against its seat, thus ensuring the tightness of the volume V1.

La course de la valve 11 est inférieure à la course de compression du ressort 8 ; dès que la course de la valve 11 est terminée, par contact d'une butée de fin de course 11A contre la pièce fixe 7, l'ouverture 10 est libérée et le liquide du volume V1 passe dans le volume V2. Le passage est accéléré grâce au vide qui s'est créé sous le piston 4B.The stroke of the valve 11 is less than the compression stroke of the spring 8; as soon as the stroke of the valve 11 is finished, by contacting an end-of-stroke stop 11A against the fixed part 7, the opening 10 is released and the liquid of the volume V1 passes into the volume V2. The passage is accelerated thanks to the vacuum created under the piston 4B.

En fin de compression du ressort de déclenchement 2, la butée 1C de la pièce mobile dépasse l'organe d'accrochage de l'électro-aimant 18 ; puis la pièce mobile 1, sous l'action du ressort 2 revient légèrement en arrière et s'arrête, par sa butée 1C, sur l'organe d'accrochage de l'électro-aimant 18 (figure 3).At the end of compression of the trigger spring 2, the stop 1C of the movable part exceeds the hooking member of the electromagnet 18; then the moving part 1, under the action of the spring 2 slightly backwards and stops, by its stop 1C, on the attachment member of the electromagnet 18 (Figure 3).

L'huile a complètement rempli le volume V2. Sa surface 22 est surmontée d'une hauteur de vide H égale à la course du piston, elle-même égale à la course de la tige 1A.The oil has completely filled volume V2. Its surface 22 is surmounted by a vacuum height H equal to the stroke of the piston, itself equal to the stroke of the rod 1A.

A partir de la position de la figure 3 (disjoncteur fermé, ressort de déclenchement bandé), il est possible soit d'opérer une manoeuvre d'ouverture du disjoncteur, soit d'opérer une mise en route du dispositif de réarmement 15, 16 pour rebander le ressort d'enclenchement 8.From the position of figure 3 (circuit breaker closed, triggered spring loaded), it is possible either to operate an operation of opening the circuit breaker, or of operating a reset device 15, 16 to reboot the engagement spring 8.

La manoeuvre d'ouverture est décrite en référence à la figure 4.The opening operation is described with reference to Figure 4.

L'électro-aimant 18 est actionné et libère l'accrochage de la butée 1C. Le ressort 2 se détend et entraîne la pièce mobile 1 solidaire de la tige de manoeuvre du disjoncteur.The electromagnet 18 is actuated and releases the attachment of the stop 1C. The spring 2 relaxes and drives the movable part 1 secured to the operating rod of the circuit breaker.

En fin de course de la pièce 1, la butée 1D vient en appui sur le bâti 3.At the end of travel of the part 1, the stop 1D comes to bear on the frame 3.

Tous les ressorts sont détendus ; le liquide occupe tout le volume délimité par les pièces 1B, 4A et 7A. C'est d'ailleurs dans cette position qu'on a procédé au remplissage grâce à une ouverture 1E dans le fond du cylindre 1B fermée par un bouchon 23.All the springs are relaxed; the liquid occupies the entire volume delimited by parts 1B, 4A and 7A. It is moreover in this position that the filling was carried out by means of an opening 1E in the bottom of the cylinder 1B closed by a plug 23.

A partir de l'état représenté dans la figure 3 on peut opérer une mise en route du dispositif de réarmement 15, 16 comme il est montré dans la figure 5.From the state shown in FIG. 3, it is possible to start up the reset device 15, 16 as shown in FIG. 5.

La came 16 entraîne la butée 4D provoquant le déplacement de la pièce 4 avec compression des ressorts 8 et 12 jusqu'à accrochage de la pièce 4 par sa butée 4C à l'électro-aimant 20.The cam 16 drives the stop 4D causing the part 4 to move with compression of the springs 8 and 12 until the part 4 is hooked by its stop 4C to the electromagnet 20.

Pendant cette opération, la valve 11 est à nouveau plaquée sur son siège, le liquide passant du volume V2 au volume V1 par le clapet 13.During this operation, the valve 11 is again pressed against its seat, the liquid passing from the volume V2 to the volume V1 by the valve 13.

Le niveau d'huile dans le volume V1 reste inchangé en raison de l'égalité des diamètres D1 et D2.The oil level in volume V1 remains unchanged due to the equality of diameters D1 and D2.

Dans la position de la figure 5, le disjoncteur est prêt à effectuer un cycle ouverture-fermeture-ouverture (OFO), la première ouverture se déroulant comme décrit en référence à la figure 4, la fermeture s'effectuant comme décrit en référence aux figures 2 et 3, la seconde ouverture s'opérant comme décrit en référence à la figure 4.In the position of FIG. 5, the circuit breaker is ready to carry out an open-close-open cycle (OFO), the first opening taking place as described with reference to FIG. 4, the closing being carried out as described with reference to the figures. 2 and 3, the second opening operating as described with reference to FIG. 4.

Le dispositif de l'invention permet d'atteindre les buts fixés et notamment une construction simple et fiable et de rendement élevé.The device of the invention achieves the goals set and in particular a simple and reliable construction and high efficiency.

En effet toutes les pièces sont de révolution et la pression de l'huile lors de l'enclenchement est faible (quelques bars).Indeed all the parts are of revolution and the pressure oil when switching on is low (a few bars).

Le dispositif peut être couplé au dispositif de stockage d'énergie mécanique à force d'accrochage faible décrit dans la demande de brevet français n° 87 03 037 déposée le 17 mars 1987 au nom de la demanderesse.The device can be coupled to the mechanical energy storage device with low latching force described in French patent application No. 87 03 037 filed March 17, 1987 in the name of the applicant.

Claims (4)

  1. A mechanical control device for controlling a circuit breaker, said device comprising an engagement spring (8) and a disengagement spring (2), the force of the engagement spring exceeding that of the disengagement spring, further comprising hydraulic means for transmitting a portion of the energy in the engagement spring (8) to said disengagement spring (2) and a moving portion (1) with respect to a stationary frame (3), a rod (1A) being connected to the breaker actuation rod, the device being characterized in that the rod (1A) is extended coaxially by a cylinder (1B) which is closed by a piston (4B) that is extended by a cylindrical body (4A, 4'A) capable of sliding in sealed manner about a collar (7A) which is stationary relative to said frame (3), the disengagement spring (2) surrounding said cylinder (1B) and bearing firstly against said frame (3) and secondly against a collar (1C) fixed to said cylinder (1B), the engagement spring (8) being placed inside the cylindrical body (4A, 4'A) and bearing firstly against said piston (4B) and secondly on said collar (7A) which is fixed relative to said frame (3), with the inside volumes (V1, V2) of the cylinder (1B) and of said cylindrical body (4A, 4'A) being filled with a liquid (6) and being capable of being put into communication with each other firstly via an orifice in said piston (4B) which is closable by a valve (11), and secondly via a non-return valve (13) allowing liquid to pass only from the cylindrical body (4A, 4'A) towards the cylinder (1B).
  2. A device according to claim 1, characterized in that the cylindrical body comprises a cylinder portion (4'A) in which said collar (7A) which is stationary relative to said frame (3) is slidably received, with the inside diameter (D2) of the cylindrical portion (4'A) being equal to the inside diameter (D1) of said cylinder (1B).
  3. A device according to claim 1 or 2, characterized in that the valve (11) is placed inside the cylindrical body (4A, 4'A) and is pressed against its seat by a spring (12) bearing against a portion which is stationary relative to the frame (3), with the stroke of this spring (12) being less than the stroke of the piston (4B) so that the valve opens at the end of the circuit breaker closing stroke.
  4. A device according to any one of claims 1 to 3, characterized in that the cylinder (1B) and the cylindrical body (4A, 4'A) carry latching means (1C, 4C) which cooperate with control members (18, 20), the collar (1C) of said cylinder (1B) constituting one of said latching means, and that the cylindrical body (4A, 4'A) is supplied with an abutment lug (4D) which co-operates with resetting members (15, 16).
EP89104014A 1988-03-09 1989-03-07 Control device for a circuit breaker Expired - Lifetime EP0332145B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89104014T ATE92669T1 (en) 1988-03-09 1989-03-07 CONTROL DEVICE OF A LOAD SWITCH.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8803028A FR2628566A1 (en) 1988-03-09 1988-03-09 DEVICE FOR CONTROLLING A CIRCUIT BREAKER
FR8803028 1988-03-09

Publications (2)

Publication Number Publication Date
EP0332145A1 EP0332145A1 (en) 1989-09-13
EP0332145B1 true EP0332145B1 (en) 1993-08-04

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Application Number Title Priority Date Filing Date
EP89104014A Expired - Lifetime EP0332145B1 (en) 1988-03-09 1989-03-07 Control device for a circuit breaker

Country Status (8)

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US (1) US4952759A (en)
EP (1) EP0332145B1 (en)
JP (1) JPH01265418A (en)
AT (1) ATE92669T1 (en)
CA (1) CA1307308C (en)
DE (1) DE68907955T2 (en)
ES (1) ES2041858T3 (en)
FR (1) FR2628566A1 (en)

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Publication number Priority date Publication date Assignee Title
ES2025453A6 (en) * 1990-07-26 1992-03-16 Pujol & Tarago Hydraulic self-adjusting device for control cables of clutches.
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Also Published As

Publication number Publication date
EP0332145A1 (en) 1989-09-13
DE68907955T2 (en) 1993-11-11
DE68907955D1 (en) 1993-09-09
JPH01265418A (en) 1989-10-23
FR2628566A1 (en) 1989-09-15
US4952759A (en) 1990-08-28
CA1307308C (en) 1992-09-08
ES2041858T3 (en) 1993-12-01
ATE92669T1 (en) 1993-08-15

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