EP0599742B1 - Off-and-on mechanism for an electric medium-high or high voltage circuit breaker - Google Patents

Off-and-on mechanism for an electric medium-high or high voltage circuit breaker Download PDF

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Publication number
EP0599742B1
EP0599742B1 EP19930420453 EP93420453A EP0599742B1 EP 0599742 B1 EP0599742 B1 EP 0599742B1 EP 19930420453 EP19930420453 EP 19930420453 EP 93420453 A EP93420453 A EP 93420453A EP 0599742 B1 EP0599742 B1 EP 0599742B1
Authority
EP
European Patent Office
Prior art keywords
auxiliary
contact
circuit
movable
main
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
EP19930420453
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German (de)
French (fr)
Other versions
EP0599742A1 (en
Inventor
Roger Bolongeat-Mobleu
Peter Malkin
Olivier Cardoletti
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Schneider Electric SE
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Schneider Electric SE
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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
    • H01H33/02—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
    • 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
    • H01H2033/6667—Details concerning lever type driving rod arrangements
    • 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
    • H01H33/121—Load break switches
    • H01H33/122—Load break switches both breaker and sectionaliser being enclosed, e.g. in SF6-filled container
    • 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
    • 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

Definitions

  • the invention relates to a medium or high electric switch or circuit breaker voltage.
  • the invention aims to remedy these drawbacks.
  • the switch further comprises a second auxiliary circuit, by example a vacuum interrupter, arranged in parallel with said main circuit and said auxiliary circuit, and provided with arcing contacts.
  • a second auxiliary circuit by example a vacuum interrupter, arranged in parallel with said main circuit and said auxiliary circuit, and provided with arcing contacts.
  • the invention applies in particular to switches and circuit breakers in which the main circuit and the auxiliary circuit is immersed in an insulating gas with dielectric strength high, such as sulfur hexafluoride (SF6), the second auxiliary circuit being consisting of a vacuum interrupter which also bathes in insulating gas.
  • an insulating gas with dielectric strength high such as sulfur hexafluoride (SF6)
  • SF6 sulfur hexafluoride
  • the second auxiliary circuit being consisting of a vacuum interrupter which also bathes in insulating gas.
  • the tight or non-sealed enclosure 4 of the switch is filled with air or a gas dielectric such as sulfur hexafluoride (SF6) and has an arrival range of current 1 and a starting range of current 2.
  • the arrival range 1 is divided into three conductive branches 1a, 1b and 1c.
  • the two branches 1a and 1b carry respectively at their end two fixed main contacts 30a and 30b, while the branch lc carries at its end a fixed auxiliary contact 35.
  • the fixed main contacts 30a and 30b are capable of cooperating with contacts main mobiles 20a and 20b pivotally mounted about an axis 3; the contact fixed auxiliary 35 cooperates with a movable auxiliary contact 25, also mounted at pivot around axis 3.
  • the axis 3 is carried by two fixed conductive branches 2a and 2b which meet at the level of the starting range 2.
  • the movable auxiliary contact 25 is electrically connected to the branches 2a and 2b, therefore to the start 2, by means of an electrical connection 4.
  • the auxiliary circuit formed by the auxiliary contacts 25, 35 is therefore arranged in parallel to the main circuit formed by the main contacts 20a, 20b, 30a and 30b.
  • two plates 28a and 28b arranged on either side of the contact mobile auxiliary 25, also pivotally mounted about the axis 3, traversed by the drive rod and biased towards each other by means of a spring 27 disposed on an axis 29, each carry two hemispherical housings 26a and 26b.
  • a ball 26 housed in a bore in the movable auxiliary contact 25, is maintained in one or the other pair of housings 26a or 26b.
  • the assembly formed by the movable auxiliary contact 25, the two plates 28a and 28b, the housings 26a and 26b, the spring 27 and the ball 26, constitute a mechanism for ball lock with two pseudo-stable positions, which allows the introduction of variations in relative angular positions between the main contacts on the one hand mobile 20a, 20b and secondly the mobile auxiliary contact 25.
  • a third electrical circuit comprising a vacuum interrupter 15 known per se, connected on the one hand to track 1 by the electrical connection 16, and on the other hand to track 2 by electrical connection 19, is arranged in parallel to the main and auxiliary circuits.
  • the movable rod 14 of the vacuum interrupter 15 is connected by a connecting rod 11 fitted with a spring 12 to the crank 9.
  • the spoiler 25a In the open position of the switch ( Figure 3), the spoiler 25a is in abutment on a fixed stop 5 and the ball 26 is positioned in the housings 26a of the two plates 28a and 28b. In other words, the movable auxiliary contact 25 is ahead of the main mobile contacts 20a and 20b.
  • crank 9 In order to close the switch ( Figure 4), the crank 9 is rotated around the axis 10.
  • the crank 9 drives the connecting rod 7, the drive rod 6 and by the even the two movable main contacts 20a and 20b and the two plates 28a and 28b. These in turn drive, through the ball locking mechanism, the movable auxiliary contact 25.
  • the movable auxiliary contact 25 comes into contact with the contact fixed auxiliary 15, the main contacts being always open.
  • the switch is equipped with the third circuit electric comprising the vacuum interrupter 15, the drive of the crank 9 control simultaneously opening and closing the vacuum interrupter 15.
  • the crank 9 and the connecting rod 11 forms a toggle mechanism, so that the closure of the contacts 15a and 15b of the bulb 15 is done only during the opening maneuvers and closing the switch ( Figures 4 and 6). In stable open or closed positions, the contacts 15a and 15b of the vacuum interrupter 15 remain open ( Figures 3 and 5).
  • Figure 7 gives an illustration of an opening and closing diagram of the three electrical circuits (main, auxiliary, vacuum interrupter) as a function of time.
  • O open stable position
  • the three circuits are naturally open.
  • Auxiliary contacts can be made of an arc-resistant material, and with possible compensation against their wear.
  • the preferred example described above is particularly well suited to a switch medium voltage or very high voltage, in which the sealed enclosure 1 is filled a dielectric gas such as SF6; the vacuum interrupter 15 will then bathe in this gas dielectric as already proposed in French patent FR-A-2,655,766.
  • a dielectric gas such as SF6
  • FIGS. 8 to 12 illustrate the claimed invention; their reference numbers are identical to those of the example described above with reference to FIGS. 1 to 7, for the common elements.
  • the drive rod 6 passes through the movable main contact 20a and is connected to the crank 9 by means of a connecting rod 7 articulated on the axis 8.
  • a second drive rod 6a passes through the movable auxiliary contact 25 and is connected to the crank 9 by means of a second connecting rod 7a articulated on the axis 8a.
  • the two rod-crank systems 7 and 7a being distinct and different, it becomes possible to introduce a continuous variation of the angular phase shift between the main contact mobile 20a and the mobile auxiliary contact 25 when the crank 9 is rotated.
  • open position of the switch ( Figure 9) the movable main contact 20a is substantially in phase with the mobile auxiliary contact 25.
  • the movable auxiliary contact 25 is respectively in advance or behind the moving main contact 20a. Therefore the cycles opening (O) and closing (F) of the switch shown in Figure 12 are symmetrical.
  • Figure 11 shows the switch in the closed position.
  • a third electrical circuit comprising a vacuum bulb 15 is arranged in parallel with respect to the main and auxiliary circuits.
  • the opening and closing diagram ( Figure 12) remains perfectly symmetrical.
  • the bulb circuit at vacuum will close first, followed by closing the auxiliary circuit, then the circuit main, and finally the bulb will open again.
  • the bulb circuit will close first, followed by the main circuit, then the auxiliary circuit, and finally the bulb will open at new.

Landscapes

  • Mechanisms For Operating Contacts (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Description

L'invention est relative à un interrupteur ou disjoncteur électrique moyenne ou haute tension.The invention relates to a medium or high electric switch or circuit breaker voltage.

De manière connue, par exemple d'après le document FR-A-2.494.493, un tel interrupteur comprend notamment :
un circuit principal doté d'au moins un contact principal fixe et d'au moins un contact principal mobile monté à pivotement autour d'un axe;

  • un circuit auxiliaire, encore appelé circuit de shuntage, disposé en parallèle par rapport au circuit principal et doté d'un contact auxiliaire fixe et d'un contact auxiliaire mobile monté à pivotement sur le même axe;
  • un mécanisme d'entraínement destiné à entraíner simultanément en rotation autour de l'axe en question, le contact principal mobile et le contact auxiliaire mobile.
In a known manner, for example from document FR-A-2,494,493, such a switch notably comprises:
a main circuit provided with at least one fixed main contact and at least one mobile main contact pivotally mounted about an axis;
  • an auxiliary circuit, also called a shunt circuit, arranged in parallel with respect to the main circuit and provided with a fixed auxiliary contact and a movable auxiliary contact pivotally mounted on the same axis;
  • a drive mechanism for simultaneously driving in rotation about the axis in question, the movable main contact and the movable auxiliary contact.

L'inconvénient d'un tel interrupteur réside dans le fait qu'il existe un couplage direct et rigide en rotation entre le contact principal mobile et le contact auxiliaire mobile.The disadvantage of such a switch lies in the fact that there is a direct coupling and rigid in rotation between the movable main contact and the movable auxiliary contact.

Il est par ailleurs connu, par exemple, d'après les documents US-A-3.215.803 et US-A-5.160.817, de faire varier le déphasage angulaire entre le contact principal mobile et le contact auxiliaire mobile.It is also known, for example, from documents US-A-3,215.803 and US-A-5,160,817, to vary the angular phase shift between the main contact mobile and the auxiliary mobile contact.

L'invention a pour but de remédier à ces inconvénients.The invention aims to remedy these drawbacks.

L'interrupteur selon l'invention est décrit dans la revendications 1.The switch according to the invention is described in claims 1.

De préférence, l'interrupteur comprend en outre un second circuit auxiliaire, par exemple une ampoule à vide, disposé en parallèle avec ledit circuit principal et ledit circuit auxiliaire, et doté de contacts d'arc.Preferably, the switch further comprises a second auxiliary circuit, by example a vacuum interrupter, arranged in parallel with said main circuit and said auxiliary circuit, and provided with arcing contacts.

L'invention s'applique notamment aux interrupteurs et disjoncteurs dans lesquels le circuit principal et le circuit auxiliaire baigne dans un gaz isolant à tenue diélectrique élevée, tel que l'hexafluorure de soufre (SF6), le second circuit auxiliaire étant constitué par une ampoule à vide qui baigne également dans le gaz isolant. The invention applies in particular to switches and circuit breakers in which the main circuit and the auxiliary circuit is immersed in an insulating gas with dielectric strength high, such as sulfur hexafluoride (SF6), the second auxiliary circuit being consisting of a vacuum interrupter which also bathes in insulating gas.

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre en référence aux dessins annexés, dans lesquels:

  • La figure 1 est une vue schématique latérale d'un exemple utile à la compréhension de l'invention.
  • La figure 2 est une vue schématique de face du circuit principal et du circuit auxiliaire de l'exemple selon la figure 1.
  • Les figures 3 à 6 illustrent le fonctionnement de l'exemple selon les figures 1 et 2, l'interrupteur se trouvant respectivement en position ouverte (figure 3), puis en cours de fermeture (figure 4), puis en position fermée (figure 5), et enfin en cours d'ouverture(figure 6).
  • La figure 7 illustre un diagramme possible en ce qui concerne les séquences d'ouverture et de fermeture de l'interrupteur selon cet exemple. Etant précisé que les figures 1 à 7 montrent des exemples utiles à la compréhension de l'invention.
  • La figure 8 est une vue schématique latérale d'un mode de réalisation de l'invention.
  • Les figures 9 à 11 illustrent le fonctionnement du mode de réalisation selon la figure 8, l'interrupteur se trouvant respectivement en position ouverte (figure 9), en cours de fermeture ou d'ouverture, (figure 10), et enfin en position fermée, (figure 11).
  • La figure 12 illustre un diagramme possible en ce qui concerne les séquences d'ouverture et de fermeture de l'interrupteur selon le mode de réalisation. Etant précisé que les figures 8 à 12 portent sur l'invention revendiquée.
Other advantages and characteristics will emerge more clearly from the description which follows with reference to the appended drawings, in which:
  • Figure 1 is a schematic side view of an example useful for understanding the invention.
  • FIG. 2 is a schematic front view of the main circuit and the auxiliary circuit of the example according to FIG. 1.
  • Figures 3 to 6 illustrate the operation of the example according to Figures 1 and 2, the switch being respectively in the open position (Figure 3), then being closed (Figure 4), then in the closed position (Figure 5 ), and finally during opening (Figure 6).
  • FIG. 7 illustrates a possible diagram with regard to the opening and closing sequences of the switch according to this example. It being specified that FIGS. 1 to 7 show examples useful for understanding the invention.
  • Figure 8 is a schematic side view of an embodiment of the invention.
  • Figures 9 to 11 illustrate the operation of the embodiment according to Figure 8, the switch being respectively in the open position (Figure 9), during closing or opening (Figure 10), and finally in the closed position , (figure 11).
  • FIG. 12 illustrates a possible diagram with regard to the opening and closing sequences of the switch according to the embodiment. It being specified that FIGS. 8 to 12 relate to the claimed invention.

En référence aux figures 1 et 2, illustrant un exemple utile à la compréhension de l'invention, l'enceinte 4 étanche ou non de l'interrupteur est remplie d'air ou d'un gaz diélectrique tel que l'hexafluorure de soufre (SF6) et comporte une plage d'arrivée de courant 1 et une plage de départ de courant 2. La plage d'arrivée 1 se divise en trois branches conductrices 1a, 1b et 1c. Les deux branches 1a et 1b portent respectivement à leur extrémité deux contacts principaux fixes 30a et 30b, tandis que la branche lc porte à son extrémité un contact auxiliaire fixe 35.With reference to Figures 1 and 2, illustrating an example useful for understanding the invention, the tight or non-sealed enclosure 4 of the switch is filled with air or a gas dielectric such as sulfur hexafluoride (SF6) and has an arrival range of current 1 and a starting range of current 2. The arrival range 1 is divided into three conductive branches 1a, 1b and 1c. The two branches 1a and 1b carry respectively at their end two fixed main contacts 30a and 30b, while the branch lc carries at its end a fixed auxiliary contact 35.

Les contacts principaux fixes 30a et 30b sont susceptibles de coopérer avec des contacts principaux mobiles 20a et 20b montés à pivotement autour d'un axe 3; le contact auxiliaire fixe 35 coopère avec un contact auxiliaire mobile 25, également monté à pivotement autour de l'axe 3.The fixed main contacts 30a and 30b are capable of cooperating with contacts main mobiles 20a and 20b pivotally mounted about an axis 3; the contact fixed auxiliary 35 cooperates with a movable auxiliary contact 25, also mounted at pivot around axis 3.

L'axe 3 est porté par deux branches conductrices fixes 2a et 2b qui se rejoignent au niveau de la plage de départ 2. The axis 3 is carried by two fixed conductive branches 2a and 2b which meet at the level of the starting range 2.

Le contact auxiliaire mobile 25 est relié électriquement aux branches 2a et 2b, donc au départ 2, au moyen d'une liaison électrique 4.The movable auxiliary contact 25 is electrically connected to the branches 2a and 2b, therefore to the start 2, by means of an electrical connection 4.

Le circuit auxiliaire formé par les contacts auxiliaires 25, 35 est donc disposé en parallèle par rapport au circuit principal formé par les contacts principaux 20a, 20b, 30a et 30b.The auxiliary circuit formed by the auxiliary contacts 25, 35 is therefore arranged in parallel to the main circuit formed by the main contacts 20a, 20b, 30a and 30b.

Une tige d'entraínement 6, parallèle à l'axe 3, traverse les contacts principaux mobiles 20a et 20b et est reliée à une manivelle 9 montée en rotation autour de l'axe 10 par l'intermédiaire d'un bielle 7 articulée sur l'axe 8.A drive rod 6, parallel to the axis 3, passes through the movable main contacts 20a and 20b and is connected to a crank 9 rotatably mounted around the axis 10 by via a connecting rod 7 articulated on the axis 8.

Sur la figure 2, deux plaques 28a et 28b, disposées de part et d'autre du contact auxiliaire mobile 25, également montées à pivotement autour de l'axe 3, traversées par la tige d'entraínement et sollicitées l'une vers l'autre au moyen d'un ressort 27 disposé sur un axe 29, portent chacune deux logements hémisphériques 26a et 26b. Une bille 26 logée dans un alésage pratiqué dans le contact auxiliaire mobile 25, est maintenue dans l'une ou l'autre paire de logements 26a ou 26b.In FIG. 2, two plates 28a and 28b, arranged on either side of the contact mobile auxiliary 25, also pivotally mounted about the axis 3, traversed by the drive rod and biased towards each other by means of a spring 27 disposed on an axis 29, each carry two hemispherical housings 26a and 26b. A ball 26 housed in a bore in the movable auxiliary contact 25, is maintained in one or the other pair of housings 26a or 26b.

L'ensemble formé par le contact auxiliaire mobile 25, les deux plaques 28a et 28b, les logements 26a et 26b, le ressort 27 et la bille 26, constituent un mécanisme de verrouillage à bille à deux positions pseudo-stables, qui permet d'introduire des variations des positions angulaires relatives entre d'une part les contacts principaux mobiles 20a, 20b et d'autre part le contact auxiliaire mobile 25.The assembly formed by the movable auxiliary contact 25, the two plates 28a and 28b, the housings 26a and 26b, the spring 27 and the ball 26, constitute a mechanism for ball lock with two pseudo-stable positions, which allows the introduction of variations in relative angular positions between the main contacts on the one hand mobile 20a, 20b and secondly the mobile auxiliary contact 25.

En outre, selon un mode de réalisation préféré, un troisième circuit électrique comprenant une ampoule à vide 15 connue en soi, reliée d'une part à la plage 1 par la liaison électrique 16, et d'autre part à la plage 2 par la liaison électrique 19, est disposée en parallèle par rapport aux circuits principal et auxiliaire. La tige mobile 14 de l'ampoule à vide 15 est relié par une bielle 11 équipée d'un ressort 12 à la manivelle 9. On pourra avantageusement se reporter au document FR-A-2.655.766 qui décrit le mécanisme associé à l'ampoule à vide.In addition, according to a preferred embodiment, a third electrical circuit comprising a vacuum interrupter 15 known per se, connected on the one hand to track 1 by the electrical connection 16, and on the other hand to track 2 by electrical connection 19, is arranged in parallel to the main and auxiliary circuits. The movable rod 14 of the vacuum interrupter 15 is connected by a connecting rod 11 fitted with a spring 12 to the crank 9. One could advantageously refer to document FR-A-2,655,766 which describes the mechanism associated with the vacuum interrupter.

Le fonctionnement du mécanisme va maintenant être décrit en détail en référence aux figures 3 à 6.The operation of the mechanism will now be described in detail with reference to Figures 3 to 6.

En position ouverte de l'interrupteur (Figure 3), le becquet 25a se trouve en butée sur une butée fixe 5 et la bille 26 est positionnée dans les logements 26a des deux plaques 28a et 28b. En d'autres termes, le contact auxiliaire mobile 25 est en avance sur les contacts principaux mobiles 20a et 20b.In the open position of the switch (Figure 3), the spoiler 25a is in abutment on a fixed stop 5 and the ball 26 is positioned in the housings 26a of the two plates 28a and 28b. In other words, the movable auxiliary contact 25 is ahead of the main mobile contacts 20a and 20b.

En vue de la fermeture de l'interrupteur (Figure 4), la manivelle 9 est mise en rotation autour de l'axe 10. La manivelle 9 entraíne la bielle 7, la tige d'entraínement 6 et par la même les deux contacts principaux mobiles 20a et 20b et les deux plaques 28a et 28b. Ces dernières entraínent à leur tour, au travers du mécanisme de verrouillage à bille, le contact auxiliaire mobile 25.In order to close the switch (Figure 4), the crank 9 is rotated around the axis 10. The crank 9 drives the connecting rod 7, the drive rod 6 and by the even the two movable main contacts 20a and 20b and the two plates 28a and 28b. These in turn drive, through the ball locking mechanism, the movable auxiliary contact 25.

Dans un premier stade, le contact auxiliaire mobile 25 entre en contact avec le contact auxiliaire fixe 15, les contacts principaux étant toujours ouverts.In a first stage, the movable auxiliary contact 25 comes into contact with the contact fixed auxiliary 15, the main contacts being always open.

Puis dans un second stade (Figure 5), la pointe 25b du contact auxiliaire 25 vient heurter une butée 35a du contact auxiliaire fixe 35, ce qui a pour effet de basculer le mécanisme de verrouillage à bille dans la position 26b; simultanément, les contacts principaux mobiles 20a et 20b se ferment sur les contacts principaux fixes 30a et 30b.Then in a second stage (Figure 5), the tip 25b of the auxiliary contact 25 comes strike a stop 35a of the fixed auxiliary contact 35, which has the effect of tilting the ball locking mechanism in position 26b; simultaneously the contacts main mobiles 20a and 20b are closed on the main fixed contacts 30a and 30b.

Dans ce second stade, on s'apercevra donc que le mécanisme de verrouillage à bille activé en fin de course de fermeture, a permis de modifier le déphasage angulaire entre les contacts principaux mobiles 20a et 20b, et le contact auxiliaire mobile 25a. Ce déphasage est en fait devenu très faible, de sorte que lors de l'ouverture suivante de l'interrupteur (Figure 6), l'ouverture des contacts principaux et auxiliaires s'effectuera sensiblement au même moment. De préférence, l'ouverture des contacts principaux précèdera très légèrement l'ouverture du contact auxiliaire.In this second stage, it will therefore be seen that the ball locking mechanism activated at the end of the closing stroke, made it possible to modify the angular phase shift between the movable main contacts 20a and 20b, and the movable auxiliary contact 25a. This phase shift has actually become very small, so that the next time you open the switch (Figure 6), the main and auxiliary contacts will open substantially at the same time. Preferably the opening of the main contacts slightly precede the opening of the auxiliary contact.

En fin de course d'ouverture, le becquet 25a vient heurter la butée 5 (Figure 3), ce qui a pour effet de basculer le mécanisme de verrouillage à bille dans la position initiale 26a, donc de faite varier le déphasage angulaire de sorte que lors de la fermeture suivante, la fermeture des contacts auxiliaires précède à nouveau la fermeture des contacts principaux.At the end of the opening stroke, the spoiler 25a strikes the stop 5 (Figure 3), which has the effect of tilting the ball locking mechanism in the initial position 26a, therefore to vary the angular phase shift so that when closing next, closing the auxiliary contacts again precedes closing the main contacts.

Si, selon le mode de réalisation préféré, l'interrupteur est équipé du troisième circuit électrique comprenant l'ampoule à vide 15, l'entraínement de la manivelle 9 commande simultanément l'ouverture et la fermeture de l'ampoule à vide 15. La manivelle 9 et la bielle 11 forme un mécanisme à genouillère, de sorte que la fermeture des contacts 15a et 15b de l'ampoule 15 se fait uniquement au cours des manoeuvres d'ouverture et fermeture de l'interrupteur (Figures 4 et 6). En positions stables ouverte ou fermée, les contacts 15a et 15b de l'ampoule à vide 15 restent ouverts (Figures 3 et 5). If, according to the preferred embodiment, the switch is equipped with the third circuit electric comprising the vacuum interrupter 15, the drive of the crank 9 control simultaneously opening and closing the vacuum interrupter 15. The crank 9 and the connecting rod 11 forms a toggle mechanism, so that the closure of the contacts 15a and 15b of the bulb 15 is done only during the opening maneuvers and closing the switch (Figures 4 and 6). In stable open or closed positions, the contacts 15a and 15b of the vacuum interrupter 15 remain open (Figures 3 and 5).

La figure 7 donne à titre illustratif un diagramme d'ouverture et de fermeture des trois circuits électriques (principal, auxiliaire, ampoule à vide) en fonction du temps. En position stable ouverte (O), les trois circuits sont naturellement ouverts. Lorsque la manoeuvre de fermeture est enclenchée, on assiste d'abord à la fermeture du circuit auxiliaire, puis à la fermeture de l'ampoule à vide, ensuite seulement la fermeture du circuit principal, et enfin, en fin de course de la manivelle 9, à la réouverture de l'ampoule à vide.Figure 7 gives an illustration of an opening and closing diagram of the three electrical circuits (main, auxiliary, vacuum interrupter) as a function of time. In open stable position (O), the three circuits are naturally open. When the closing operation is engaged, we first witness the closing of the circuit auxiliary, then when the vacuum interrupter is closed, then only when the main circuit, and finally, at the end of the crank stroke 9, at the reopening of the vacuum interrupter.

Par conséquent en position stable fermée (F), les circuits principal et auxiliaire sont fermés, tandis que l'ampoule à vide est ouverte. Lorsque la manoeuvre d'ouverture est déclenchée, on assiste d'abord à la fermeture de l'ampoule à vide, puis après un certain moment, à l'ouverture du circuit principal suivi immédiatement de l'ouverture du circuit auxiliaire, et enfin l'ouverture de l'ampoule à vide, pour se retrouver en position stable ouverte (O).Therefore in stable closed position (F), the main and auxiliary circuits are closed, while the vacuum interrupter is open. When the opening operation is triggered, we first witness the closing of the vacuum bulb, then after a certain moment, at the opening of the main circuit followed immediately by the opening of the auxiliary circuit, and finally the opening of the vacuum bulb, to find itself in position stable open (O).

L'avantage d'une telle séquence réside dans le fait que lors de la fermeture de l'interrupteur, la fermeture du circuit auxiliaire précède la fermeture de l'ampoule à vide, le préamorçage se fait donc au niveau du circuit auxiliaire, éliminant ainsi les phénomènes bien connus de réamorçages multiples associés aux ampoules à vide qui génèrent des surtensions néfastes pour certaines applications, par exemple les moteurs moyenne tension.The advantage of such a sequence is that when closing the switch, closing the auxiliary circuit precedes closing the bulb at vacuum, pre-priming is therefore done at the auxiliary circuit, thus eliminating well-known multiple reboot phenomena associated with vacuum interrupters which generate harmful overvoltages for certain applications, for example motors medium voltage.

En outre cela permet de réduire l'érosion sur les contacts principaux, ainsi que la force nécessaire à la fermeture des contacts principaux. Les contacts auxiliaires peuvent être réalisés en un matériau résistant à l'arc, et avec une éventuelle compensation contre leur usure.In addition it reduces erosion on the main contacts, as well as the force necessary to close the main contacts. Auxiliary contacts can be made of an arc-resistant material, and with possible compensation against their wear.

L'exemple préféré décrit ci-dessus est particulièrement bien adapté à un interrupteur moyenne tension ou très haute tension, dans lequel l'enceinte étanche 1 est remplie d'un gaz diélectrique tel que le SF6; l'ampoule à vide 15 baignera alors dans ce gaz diélectrique tel qu'il a déjà été proposé dans le brevet français FR-A-2.655.766.The preferred example described above is particularly well suited to a switch medium voltage or very high voltage, in which the sealed enclosure 1 is filled a dielectric gas such as SF6; the vacuum interrupter 15 will then bathe in this gas dielectric as already proposed in French patent FR-A-2,655,766.

Les figures 8 à 12 illustrent l'invention revendiquée ; leurs numéros de référence sont identiques à ceux de l'exemple décrit ci-dessus en référence aux figures 1 à 7, pour les éléments communs. Figures 8 to 12 illustrate the claimed invention; their reference numbers are identical to those of the example described above with reference to FIGS. 1 to 7, for the common elements.

On retrouve notamment l'enceinte 4, les plages d'arrivée et de départ 2, le contact principal fixe 30a, le contact auxiliaire fixe 35, le contact principal mobile 20a et le contact auxiliaire mobile 25, ces deux derniers étant montés à pivotement autour de l'axe 3. Le circuit auxiliaire est disposé en parallèle par rapport au circuit principal.We find in particular enclosure 4, the arrival and departure periods 2, the contact fixed main 30a, fixed auxiliary contact 35, movable main contact 20a and movable auxiliary contact 25, the latter two being pivotally mounted around axis 3. The auxiliary circuit is arranged in parallel with respect to the main circuit.

La tige d'entraínement 6 traverse le contact principal mobile 20a et est relié à la manivelle 9 par l'intermédiaire d'une bielle 7 articulée sur l'axe 8.The drive rod 6 passes through the movable main contact 20a and is connected to the crank 9 by means of a connecting rod 7 articulated on the axis 8.

Une seconde tige d'entraínement 6a traverse le contact auxiliaire mobile 25 et est reliée à la manivelle 9 par l'intermédiaire d'une seconde bielle 7a articulée sur l'axe 8a. Les deux systèmes bielle-manivelle 7 et 7a étant distincts et différents, il devient possible d'introduire une variation continue du déphasage angulaire entre le contact principal mobile 20a et le contact auxiliaire mobile 25 lors de la rotation de la manivelle 9. En position ouverte de l'interrupteur (Figure 9) le contact principal mobile 20a est sensiblement en phase avec le contact auxiliaire mobile 25. En cours de fermeture ou d'ouverture (Figure 10), le contact auxiliaire mobile 25 est respectivement en avance ou en retard par rapport au contact principal mobile 20a. Par conséquent les cycles d'ouverture (O) et de fermeture (F) de l'interrupteur représentés à la figure 12 sont symétriques.A second drive rod 6a passes through the movable auxiliary contact 25 and is connected to the crank 9 by means of a second connecting rod 7a articulated on the axis 8a. The two rod-crank systems 7 and 7a being distinct and different, it becomes possible to introduce a continuous variation of the angular phase shift between the main contact mobile 20a and the mobile auxiliary contact 25 when the crank 9 is rotated. open position of the switch (Figure 9) the movable main contact 20a is substantially in phase with the mobile auxiliary contact 25. During closing or opening (Figure 10), the movable auxiliary contact 25 is respectively in advance or behind the moving main contact 20a. Therefore the cycles opening (O) and closing (F) of the switch shown in Figure 12 are symmetrical.

La figure 11 montre l'interrupteur en position fermée.Figure 11 shows the switch in the closed position.

Selon un mode préféré, un troisième circuit électrique comprenant une ampoule à vide 15 est disposé en parallèle par rapport aux circuits principal et auxiliaire.According to a preferred mode, a third electrical circuit comprising a vacuum bulb 15 is arranged in parallel with respect to the main and auxiliary circuits.

Si l'on adjoint l'ampoule à vide 15, cette dernière étant commandée de manière identique au premier mode de réalisation, le diagramme d'ouverture et de fermeture (Figure 12) reste parfaitement symétrique. A la fermeture, le circuit de l'ampoule à vide se fermera tout d'abord, suivi de la fermeture du circuit auxiliaire, puis du circuit principal, et enfin l'ampoule s'ouvrira à nouveau.If the vacuum bulb 15 is added, the latter being controlled so identical to the first embodiment, the opening and closing diagram (Figure 12) remains perfectly symmetrical. When closing, the bulb circuit at vacuum will close first, followed by closing the auxiliary circuit, then the circuit main, and finally the bulb will open again.

Inversement à l'ouverture, le circuit de l'ampoule se fermera tout d'abord, suivi de l'ouverture du circuit principal, puis du circuit auxiliaire, et enfin l'ampoule s'ouvrira à nouveau.Conversely upon opening, the bulb circuit will close first, followed by the main circuit, then the auxiliary circuit, and finally the bulb will open at new.

Claims (7)

  1. An electrical switch comprising :
    a main circuit provided with at least one stationary main contact (30a, 30b) and at least one movable main contact (20a, 20b) pivotally mounted around a spindle (3);
    an auxiliary circuit arranged in parallel to the main circuit and provided with a stationary auxiliary contact (35) and a movable auxiliary contact (25) articulated around said spindle (3);
    a drive mechanism (6 to 10) designed to drive the movable main contact and the movable auxiliary contact simultaneously in rotation around said spindle (3), said drive mechanism including a variable angular offset mechanism (26, 28a, 28b ; 6a, 7a, 8a, 9, 10) able to vary the relative angular positions of the movable auxiliary contact and the movable main contact when operations of the switch take place, characterized in that said angular offset mechanism comprises two connecting rod-crank mechanisms driven simultaneously by a common motor shaft, a first connecting rod-crank mechanism (6, 7, 8) associated to the movable main contact and a second connecting rod-crank mechanism (6a, 7a, 8a) associated to the movable auxiliary contact, so as to allow continuous variations of the angular offset when operations of the switch take place.
  2. The switch according to claim 1, characterized in that said main circuit and said auxiliary circuit are immersed in a high dielectric strength gas such as SF6.
  3. The switch according to either one of the claims 1 or 2, characterized in that it comprises in addition a second auxiliary circuit (15) arranged in parallel with said main circuit and said auxiliary circuit, and equipped with arcing contacts.
  4. The switch according to claim 3, characterized in that said second auxiliary circuit comprises a movable arcing contact and a stationary arcing contact, that when a closing operation takes place closing of the arcing contacts takes place before closing of the auxiliary contacts, and that when an opening operation takes place opening of the auxiliary contacts takes place before opening of the arcing contacts.
  5. The switch according to either one of the claims 3 or 4, characterized in that said second auxiliary circuit (15) is also immersed in a high dielectric strength gas such as SF6.
  6. The switch according to either one of the claims 3 or 4, characterized in that said second auxiliary circuit is formed by a vacuum cartridge.
  7. The switch according to any one of the claims 1 to 6, characterized in that it oonstitutes the breaking circuit of a medium voltage circuit breaker.
EP19930420453 1992-11-26 1993-11-16 Off-and-on mechanism for an electric medium-high or high voltage circuit breaker Expired - Lifetime EP0599742B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9214356 1992-11-26
FR9214356 1992-11-26

Publications (2)

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EP0599742A1 EP0599742A1 (en) 1994-06-01
EP0599742B1 true EP0599742B1 (en) 1999-01-20

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Application Number Title Priority Date Filing Date
EP19930420453 Expired - Lifetime EP0599742B1 (en) 1992-11-26 1993-11-16 Off-and-on mechanism for an electric medium-high or high voltage circuit breaker

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EP (1) EP0599742B1 (en)
JP (1) JPH06236717A (en)
CN (1) CN1034304C (en)
CA (1) CA2109986A1 (en)
DE (1) DE69323160T2 (en)
ES (1) ES2130239T3 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN101964271A (en) * 2010-09-28 2011-02-02 丹东供电设备厂 High-voltage switch transfer current device
CN101494133B (en) * 2009-02-25 2011-08-24 谢翠斌 Manual switching and lock catch protection device for high voltage vacuum permanent magnet circuit breaker

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DE19613568A1 (en) * 1996-04-04 1997-10-09 Asea Brown Boveri Circuit breaker
DE10229096A1 (en) * 2002-06-25 2004-01-29 Siemens Ag Wear indicator for vacuum switch tube has wear indication parameters measured on inside of gas-tight encapsulation housing and indicated on outside of latter
KR101064743B1 (en) * 2005-11-23 2011-09-15 현대중공업 주식회사 Switching mechanism
DE102008048828A1 (en) * 2008-09-22 2010-04-08 Siemens Aktiengesellschaft Method for determining stroke of two actuating elements driven by drive element, involves determining position of drive element, when actuating element is arranged in predetermined position
CN101645368B (en) * 2009-09-02 2012-08-15 北京双杰电气股份有限公司 Electric switch provided with separate arc-extinguishing device
JP5452555B2 (en) * 2011-08-29 2014-03-26 株式会社日立製作所 Switchgear and switchgear operating method
FR2980632B1 (en) * 2011-09-23 2013-09-13 Schneider Electric Ind Sas CUTTING DEVICE WITH FLUID GAS SPEED, DISCONNECT AND VACUUM BULB
FR2980633B1 (en) * 2011-09-27 2013-09-06 Schneider Electric Ind Sas MEDIUM VOLTAGE POWER DISTRIBUTION APPARATUS
CN102403160B (en) * 2011-11-29 2014-03-12 浙江开关厂有限公司 Quick three working position isolation switch
CN102983038A (en) * 2012-11-28 2013-03-20 西安爱尔发开关有限公司 High-voltage vacuum circuit breaker with O-shaped electrodynamic force compensation device
CN103983448B (en) * 2014-05-27 2017-10-31 江苏森源电气股份有限公司 Mechanical property on-line measuring device
CN105845494B (en) * 2015-01-15 2019-05-10 施耐德电器工业公司 Shunt open-circuit system
CN107086146B (en) * 2017-05-24 2019-10-18 句容市福润电气有限公司 A kind of lock closes stable indoor hv earthing switch device

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US3215803A (en) * 1962-12-31 1965-11-02 Allis Chalmers Mfg Co Contact structure for circuit breaker
FR2494493A1 (en) * 1980-11-17 1982-05-21 Merlin Gerin ELECTRIC CIRCUIT BREAKER WITH SELF-BLOWING BY ARC ROTATION
FR2508229A1 (en) * 1981-06-23 1982-12-24 Jaeger Multi-contact bi-directional rotating shaft switch - has assembly of three ball bearings which roll onto slots above printed circuit board contact points with pressure maintained by plate
FR2655766B1 (en) * 1989-12-11 1993-09-03 Merlin Gerin MEDIUM VOLTAGE HYBRID CIRCUIT BREAKER.
US5160817A (en) * 1990-11-21 1992-11-03 Automatic Switch Company Electrical switch contact arrangement having quick break arcing contacts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101494133B (en) * 2009-02-25 2011-08-24 谢翠斌 Manual switching and lock catch protection device for high voltage vacuum permanent magnet circuit breaker
CN101964271A (en) * 2010-09-28 2011-02-02 丹东供电设备厂 High-voltage switch transfer current device
CN101964271B (en) * 2010-09-28 2012-08-15 丹东供电设备厂 High-voltage switch transfer current device

Also Published As

Publication number Publication date
DE69323160D1 (en) 1999-03-04
CN1034304C (en) 1997-03-19
DE69323160T2 (en) 1999-09-02
EP0599742A1 (en) 1994-06-01
CA2109986A1 (en) 1994-05-27
JPH06236717A (en) 1994-08-23
ES2130239T3 (en) 1999-07-01
CN1089389A (en) 1994-07-13

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