EP0120874B1 - Electric current breaking device - Google Patents

Electric current breaking device Download PDF

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Publication number
EP0120874B1
EP0120874B1 EP83902802A EP83902802A EP0120874B1 EP 0120874 B1 EP0120874 B1 EP 0120874B1 EP 83902802 A EP83902802 A EP 83902802A EP 83902802 A EP83902802 A EP 83902802A EP 0120874 B1 EP0120874 B1 EP 0120874B1
Authority
EP
European Patent Office
Prior art keywords
contact
contact set
auxiliary
main
switch device
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
EP83902802A
Other languages
German (de)
French (fr)
Other versions
EP0120874A1 (en
Inventor
Edouard Mancini
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.)
APPAREILLAGE GARDY SOCIETE ANONYME TE GENEVE, ZWIT
Original Assignee
APPAREILLAGE GARDY 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 APPAREILLAGE GARDY SA filed Critical APPAREILLAGE GARDY SA
Priority to AT83902802T priority Critical patent/ATE23235T1/en
Publication of EP0120874A1 publication Critical patent/EP0120874A1/en
Application granted granted Critical
Publication of EP0120874B1 publication Critical patent/EP0120874B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H33/6661—Combination with other type of switch, e.g. for load break switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts

Definitions

  • the present invention relates to an electrical current interrupting device comprising a main contact set and an auxiliary contact set, each comprising at least one movable contact element, the movable elements of the two contact sets being connected by a link mechanism and actuation.
  • the known devices do not meet the two requirements, either because the main contact is well protected from a false operation which can damage it, but on the other hand subjected to oxidation, sulfurization or other corrosion, or because it is protected from such an alteration but does not include any organ capable of protecting it from a possible false maneuver.
  • the device according to the invention overcomes this drawback and it is characterized, for this purpose, in that the auxiliary contact set comprises a contact closure range located between two opening ranges of the closure contacts and the opening of the contacts belonging to the main contact set taking place when the contacts belonging to the auxiliary contact set are in said closing range, the movable element of the auxiliary contact set being in an opening range in the engaged positions and triggered by the device, the main contact set being enclosed in a sealed enclosure at low pressure.
  • Fig. 1 schematically illustrates the device seen in perspective.
  • Fig. 2 is a graphic representation of the operation of the device illustrating the open 0 and closed 1 positions of the main contact set and of the auxiliary contact set as a function of the travel D respectively of the movable elements of these contact sets.
  • the interruption device illustrated in fig. 1 comprises a main contact set 1 and an auxiliary contact set 2.
  • the main contact set 1 at high nominal current is placed in a sealed enclosure 3 in a low pressure air medium of the order of 10, 6 torr (1.33x10 ' 3 Pa). It comprises a fixed contact element 4 and a movable contact element 5 capable of being moved axially by means of a bellows 6.
  • the set of auxiliary contacts 2 also comprises a fixed element constituted by a horn 7 and an element mobile contact formed by a cutting knife 8. The latter is integral with a control shaft 9 on which are rigidly fixed a cam 10 intended to act on the mobile contact element 6 and an actuating lever 11 connected to an insulating rod 12 for operating.
  • the main contact set and the auxiliary contact set are connected in parallel by two electrical lines 13 and 14.
  • the line 13 comprises two flexible portions 15 and 16 allowing the displacement of the movable contacts 5 and 8.
  • the horn 7 of the contact set auxiliary is double and has a closing area 17 located between two contact opening areas 18 and 19.
  • a plate 20 of insulating material is mounted between the line 14 and the area 19 ensuring complete isolation of the knife 8 when the device is triggered.
  • the operating rod 12 acts on the actuating lever 11 which makes the shaft 9 pivot around its axis, which will move the knife from the initial position a to the position b.
  • the cam 10 simultaneously performs a rotation in dead travel.
  • the knife 8 enters the closing range 17 of the horn 7 and establishes the galvanic contact between the elements 8 and 7.
  • the current then flows from line 13 to line 14 by the bypass line constituted by the flexible portion 16, the knife 8 and the horn 7.
  • the cam 10 begins to move the movable contact element 5 and definitively establishes in c the main contact set 1 while the knife 8 continues to run in the horn 7.
  • the opening function of the device is performed in a reverse sequence of operations.
  • the auxiliary contact set 2 with knife 8 and horn 7 establishes a controlled sequence of closing and opening of the device and allows the advantages, on the one hand, that the main contact set is switched in the absence of a cut in active loads and, on the other hand, that the latter has to bear any cuts on faults during a false switching operation.
  • the advantage of the sectioning knife is also evident in the fact that it makes it possible to ensure, from a distance, the position of the contacts of the device. As the auxiliary contact set is visible at all times, it is easy to detect the wear of the contact parts and their replacement.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

The breaking device comprises a main contact (1) enclosed in a low pressure sealed housing (3) and an auxiliary contact (2) consisting of a sectioning blade (8) and of a horn (7) having a closure range (17) situated between two opening ranges (18 and 19). The closure range (17) of said auxiliary contact (2) extends on either side of the switching position of the main contact (1), and the sectioning blade (8) is within the opening range when the device is in the triggered and untriggered positions. The breaking device is thereby very resistant since the elements of the main contact are protected on one hand from the outer corrosion agents and on the other hand from damaging due to underload switching.

Description

La présente invention concerne un dispositif d'interruption de courant électrique comprenant un jeu de contacts principal et un jeu de contacts auxiliaire comportant chacun au moins un élément mobile de contact, les éléments mobiles des deux jeux de contacts étant reliés par un mécanisme de liaison et d'actionnement.The present invention relates to an electrical current interrupting device comprising a main contact set and an auxiliary contact set, each comprising at least one movable contact element, the movable elements of the two contact sets being connected by a link mechanism and actuation.

Il est fréquent de rencontrer, dans les installations des chemins de fer électriques des zones d'alimentation en énergie de la caténaire appelées zones commutables recevant de l'énergie sous différentes tensions électriques et différentes natures de courants, monophasé ou continu.It is frequent to meet, in the installations of the electric railways of zones of energy supply of the catenary called switchable zones receiving energy under different electric voltages and different natures of currents, single-phase or continuous.

Ces zones doivent être en mesure, par l'intermédiaire d'un dispositif adéquat, d'être commutées sur le courant et la tension qui conviennent. Cette commutation devra s'effectuer par un dispositif répondant à deux exigences principales:

  • Transporter le maximum de courant à travers un contact ne s'altérant pas dans le temps. Accepter une fausse manoeuvre sans destruction de l'élément de contact principal.
These zones must be able, via a suitable device, to be switched to the appropriate current and voltage. This switching must be carried out by a device meeting two main requirements:
  • Transport the maximum current through a contact that does not deteriorate over time. Accept a wrong move without destroying the main contact element.

Les dispositifs connus ne répondent pas aux deux exigences, soit parce que le contact principal est bien protégé d'une fausse manoeuvre pouvant l'endommager, mais par contre soumis à une oxydation, sulfurisation ou autre corrosion, soit qu'il est protégé d'une telle altération mais ne comporte pas d'organe susceptible de le protéger d'une éventuelle fausse manceuvre.The known devices do not meet the two requirements, either because the main contact is well protected from a false operation which can damage it, but on the other hand subjected to oxidation, sulfurization or other corrosion, or because it is protected from such an alteration but does not include any organ capable of protecting it from a possible false maneuver.

Le dispositif selon l'invention permet d'écarter cet inconvénient et il est caractérisé, à cet effet, en ce que le jeu de contacts auxiliaire comprend une plage de fermeture des contacts située entre deux plages d'ouverture des contacts de fermeture et l'ouverture des contacts appartenant en jeu de contacts principal s'effectuant lorsque les contacts appartenant au jeu de contacts auxiliaire se trouvent dans ladite plage de fermeture, l'élément mobile du jeu de contacts auxiliaire étant dans une plage d'ouverture dans les positions enclenchée et déclenchée du dispositif, le jeu de contacts principal étant enfermé dans une enceinte étanche à basse pression.The device according to the invention overcomes this drawback and it is characterized, for this purpose, in that the auxiliary contact set comprises a contact closure range located between two opening ranges of the closure contacts and the opening of the contacts belonging to the main contact set taking place when the contacts belonging to the auxiliary contact set are in said closing range, the movable element of the auxiliary contact set being in an opening range in the engaged positions and triggered by the device, the main contact set being enclosed in a sealed enclosure at low pressure.

L'endommagement par altération de longue durée est ainsi évité du fait que le contact principal est protégé des agents extérieurs de corrosion par l'enceinte étanche, et une éventuelle destruction des éléments du contact principal est évitée par la séquence contrôlée de commutation entre le contact principal et le contact auxiliaire.Damage by long-term alteration is thus avoided because the main contact is protected from external agents of corrosion by the sealed enclosure, and possible destruction of the elements of the main contact is avoided by the controlled switching sequence between the contact main and auxiliary contact.

Les dessins annexés représentent, à titre d'exemple, une forme d'exécution du dispositif objet de l'invention.The accompanying drawings show, by way of example, an embodiment of the device which is the subject of the invention.

La fig. 1 illustre schématiquement le dispositif vu en perspective.Fig. 1 schematically illustrates the device seen in perspective.

La fig. 2 est une représentation graphique du fonctionnement du dispositif illustrant les positions d'ouverture 0 et de fermeture 1 du jeu de contacts principal et du jeu de contacts auxiliaire en fonction de la course D respectivement D' des éléments mobiles de ces jeu de contacts.Fig. 2 is a graphic representation of the operation of the device illustrating the open 0 and closed 1 positions of the main contact set and of the auxiliary contact set as a function of the travel D respectively of the movable elements of these contact sets.

Le dispositif d'interruption illustré à la fig. 1, comprend un jeu de contacts principal 1 et un jeu de contacts auxiliaire 2. Le jeu de contact principal 1 à intensité nominale élevée est placé dans une enceinte étanche 3 dans un milieu d'air à basse pression de l'ordre de 10,6 torr (1,33x10' 3 Pa). Il comprend un élément de contact fixe 4 et un élément de contact mobile 5 susceptible d'être déplacé axialement par l'intermédiaire d'un soufflet 6. Le jeu de contacts auxiliaire 2 comprend également un élément fixe constitué par une corne 7 et un élément de contact mobile formé par un couteau de sectionnement 8. Ce dernier est solidaire d'un arbre de commande 9 sur lequel sont fixés rigidement une came 10 destinée à agir sur l'élément de contact mobile 6 et un levier d'actionnement 11 relié à une tringle isolante 12 de manoeuvre. Le jeu de contacts principal et le jeu de contacts auxiliaire sont connectés en parallèle par deux lignes électriques 13 et 14. La ligne 13 comprend deux portions souples 15 et 16 permettant le déplacement des contacts mobiles 5 et 8. La corne 7 du jeu de contacts auxiliaire est double et présente une plage de fermeture 17 située entre deux plages d'ouverture de contact 18 et 19. Une plaquette 20 en matière isolante est montée entre la ligne 14 et la plage 19 assurant une isolation complète du couteau 8 lorsque le dispositif est enclenché.The interruption device illustrated in fig. 1, comprises a main contact set 1 and an auxiliary contact set 2. The main contact set 1 at high nominal current is placed in a sealed enclosure 3 in a low pressure air medium of the order of 10, 6 torr (1.33x10 ' 3 Pa). It comprises a fixed contact element 4 and a movable contact element 5 capable of being moved axially by means of a bellows 6. The set of auxiliary contacts 2 also comprises a fixed element constituted by a horn 7 and an element mobile contact formed by a cutting knife 8. The latter is integral with a control shaft 9 on which are rigidly fixed a cam 10 intended to act on the mobile contact element 6 and an actuating lever 11 connected to an insulating rod 12 for operating. The main contact set and the auxiliary contact set are connected in parallel by two electrical lines 13 and 14. The line 13 comprises two flexible portions 15 and 16 allowing the displacement of the movable contacts 5 and 8. The horn 7 of the contact set auxiliary is double and has a closing area 17 located between two contact opening areas 18 and 19. A plate 20 of insulating material is mounted between the line 14 and the area 19 ensuring complete isolation of the knife 8 when the device is triggered.

En référence à la fig. 2, lors d'une opération de fermeture du dispositif, la tringle de manoeuvre 12 agit sur le levier d'actionnement 11 qui fait pivoter l'arbre 9 autour de son axe, ce qui va déplacer le couteau de la position initiale a à la position b. La came 10 accomplit simultanément une rotation en course morte. En b le couteau 8 pénètre dans la plage de fermeture 17 de la corne 7 et établit le contact galvanique entre les éléments 8 et 7. Le courant passe à ce moment de la ligne 13 à la ligne 14 par la ligne de dérivation constituée par la portion souple 16, le couteau 8 et la corne 7. A ce moment, la came 10 commence à déplacer l'élément de contact mobile 5 et établit en c définitivement le jeu de contacts principal 1 pendant que le couteau 8 continue sa course dans la corne 7. La fin de la course du couteau 8 va dégager celui-ci de la plage de fermeture 17 et seul le jeu de contacts principal sera apte à conduire le courant. Aucun courant ne passera dans le jeu de contacts auxiliaire 2 lorsque le dispositif est en position enclenchée d, puisque le couteau se trouve dans la plage d'ouverture 19 tel qu'illustré à la fig. 2.With reference to fig. 2, during an operation for closing the device, the operating rod 12 acts on the actuating lever 11 which makes the shaft 9 pivot around its axis, which will move the knife from the initial position a to the position b. The cam 10 simultaneously performs a rotation in dead travel. At b the knife 8 enters the closing range 17 of the horn 7 and establishes the galvanic contact between the elements 8 and 7. The current then flows from line 13 to line 14 by the bypass line constituted by the flexible portion 16, the knife 8 and the horn 7. At this moment, the cam 10 begins to move the movable contact element 5 and definitively establishes in c the main contact set 1 while the knife 8 continues to run in the horn 7. The end of the stroke of the knife 8 will release it from the closing range 17 and only the main contact set will be able to conduct the current. No current will flow through the auxiliary contact set 2 when the device is in the engaged position d, since the knife is in the opening range 19 as illustrated in FIG. 2.

La fonction d'ouverture du dispositif s'effectue selon une séquence inverse des opérations.The opening function of the device is performed in a reverse sequence of operations.

La conservation sous vide du jeu de contacts principal 1 dans l'enceinte 3 à basse pression permet d'éviter une altération rapide des surfaces de contact due à une oxydation, sulfurisation ou autre corrosion en garantit une excellente qualité de contact aussi longtemps que le vide est maintenu dans l'enceinte 3. Le jeu de contacts auxiliaire 2 à couteau 8 et corne 7 établit une séquence contrôlée de fermeture et d'ouverture du dispositif et permet les avantages, d'une part, que le jeu de contacts principal soit commuté en l'absence de coupure de charges actives et, d'autre part, que ce dernier ait à supporter les éventuelles coupures sur défauts lors d'une fausse manoeuvre de commutation. L'avantage du couteau de sectionnement est aussi évident dans le fait qu'il permet de s'assurer, à distance, de la position des contacts de l'appareil. Comme le jeu de contacts auxiliaire est visible en tout temps, la détection de l'usure des parties de contact et leur remplacement est aisé.Keeping the main contact set 1 in vacuum in the enclosure 3 at low pressure prevents rapid deterioration of the contact surfaces due to oxidation, sulfurization or other corrosion, ensuring excellent contact quality as long as the vacuum is maintained in enclosure 3. The auxiliary contact set 2 with knife 8 and horn 7 establishes a controlled sequence of closing and opening of the device and allows the advantages, on the one hand, that the main contact set is switched in the absence of a cut in active loads and, on the other hand, that the latter has to bear any cuts on faults during a false switching operation. The advantage of the sectioning knife is also evident in the fact that it makes it possible to ensure, from a distance, the position of the contacts of the device. As the auxiliary contact set is visible at all times, it is easy to detect the wear of the contact parts and their replacement.

Il est par ailleurs possible d'équiper le jeu de contacts auxiliaire d'une résistance de limitation de charge en cas de commutation sur défaut.It is also possible to equip the auxiliary contact set with a load limiting resistor in the event of a fault switching.

Claims (3)

1. Switch device for interrupting an electrical courant comprising a main contact set (4, 5) and an auxiliary contact set (7, 8), each having at least one movable contact piece (5, 8), the movable contact pieces of the two contact sets being interconnected by a connecting and driving mechanism, characterized in that the auxiliary contact set (7, 8) comprises a closed contact portion (17) of its path located between two opened contact portions, the closing and the opening of the contact pieces (4, 5) belonging to the main contact set being accomplished when the contact pieces (7,8) belonging to the auxiliary contact set are located in said closed contact portion (17) of its path, the movable contact piece (8) of the auxiliary contact set being in a opened portion of its path in the closed and opened position of the switch device, the main contact set being enclosed in a vacuum cartridge (3).
2. Switch device according to claim 1, characterized in that the movable contact piece (8) of the auxiliary contact set is constituted by a knife-switch set up in a visible manner in order to indicate the position of the switch device.
3. Switch device according to claim 2, characterized in that said connecting and driving mechanism comprises a driving shaft (9) to which a cam (10) and said knife-switch (8) of the auxiliary contact set are rigidly secured, said cam being intended to work together with the movable contact piece (5) of the main contact set, the rotation of the driving shaft being operated by an insulating rod (12) driving an actuating lever (11) integral with the shaft.
EP83902802A 1982-09-30 1983-09-13 Electric current breaking device Expired EP0120874B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83902802T ATE23235T1 (en) 1982-09-30 1983-09-13 ELECTRICAL INTERRUPTION DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5743/82A CH649864A5 (en) 1982-09-30 1982-09-30 Device interruption of electrical current.
CH5743/82 1982-09-30

Publications (2)

Publication Number Publication Date
EP0120874A1 EP0120874A1 (en) 1984-10-10
EP0120874B1 true EP0120874B1 (en) 1986-10-29

Family

ID=4298616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83902802A Expired EP0120874B1 (en) 1982-09-30 1983-09-13 Electric current breaking device

Country Status (8)

Country Link
EP (1) EP0120874B1 (en)
CH (1) CH649864A5 (en)
DE (1) DE3367300D1 (en)
ES (1) ES283168Y (en)
IN (1) IN160175B (en)
IT (1) IT1168835B (en)
PT (1) PT77423B (en)
WO (1) WO1984001469A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005013231B3 (en) * 2005-03-18 2006-09-21 Siemens Ag Cam profile switch
FR2972290B1 (en) * 2011-03-02 2013-04-19 Schneider Electric Ind Sas DEVICE FOR CURRENT CURRENT ON A DERIVED ELECTRIC LINE AND VACUUM BULB
CN103489704B (en) * 2013-09-25 2015-12-16 苏州朗格电气有限公司 A kind of vacuum circuit breaker operating device
FR3104807B1 (en) * 2019-12-15 2021-11-19 Betoliere Jean Pierre Switch / circuit breaker-disconnector for electrical distribution networks greater than 3.6KV, with cutting and closing of currents in a vacuum interrupter and insulation without SF6.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1540361A1 (en) * 1965-02-03 1970-01-02
US3671696A (en) * 1970-11-16 1972-06-20 Allis Chalmers Mfg Co Vacuum interrupter shunted with mechanical switch

Also Published As

Publication number Publication date
PT77423B (en) 1986-02-13
IT8367946A0 (en) 1983-09-13
IT1168835B (en) 1987-05-20
ES283168U (en) 1985-11-16
EP0120874A1 (en) 1984-10-10
WO1984001469A1 (en) 1984-04-12
ES283168Y (en) 1986-06-01
PT77423A (en) 1983-11-01
DE3367300D1 (en) 1986-12-04
IN160175B (en) 1987-06-27
CH649864A5 (en) 1985-06-14

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