EP0599742A1 - 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
EP0599742A1
EP0599742A1 EP93420453A EP93420453A EP0599742A1 EP 0599742 A1 EP0599742 A1 EP 0599742A1 EP 93420453 A EP93420453 A EP 93420453A EP 93420453 A EP93420453 A EP 93420453A EP 0599742 A1 EP0599742 A1 EP 0599742A1
Authority
EP
European Patent Office
Prior art keywords
auxiliary
contact
main
contacts
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93420453A
Other languages
German (de)
French (fr)
Other versions
EP0599742B1 (en
Inventor
Roger Bolongeat-Mobleu
Peter Malkin
Olivier Cardoletti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric SE
Original Assignee
Merlin Gerin SA
Schneider Electric SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Merlin Gerin SA, Schneider Electric SE filed Critical Merlin Gerin SA
Publication of EP0599742A1 publication Critical patent/EP0599742A1/en
Application granted granted Critical
Publication of EP0599742B1 publication Critical patent/EP0599742B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • 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 voltage electrical switch or circuit breaker.
  • the invention aims to remedy this drawback.
  • the drive mechanism includes a variable angular phase shift mechanism capable of varying the relative angular positions of the movable auxiliary contact and the movable main contact during the operations of the switch.
  • the angular phase shift mechanism is adapted to authorize two pseudo-stable relative angular positions, a first angular position finally activated for the opening stroke of the switch and for which, during the following closing maneuver , the closing of the auxiliary contacts precedes the closing of the main contacts, and a second angular position activated at the end of the switch closing stroke and for which, during the next opening operation, the opening of the main contacts performs substantially at the same time as the opening of the auxiliary contacts.
  • the movable auxiliary contact is disposed between two plates articulated around said axis, integral in rotation with said movable main contact and biased towards one another by means of springs; a two position ball locking mechanism is interposed between said plates and the movable auxiliary contact, the first angular position being activated by means of a first stop, and the second angular position being activated by means of a second stop formed by the mobile auxiliary contact.
  • the angular phase shift mechanism is adapted to allow continuous variations of the angular phase shift during the operations of the switch, so that during a closing operation, the closing of the auxiliary contacts precedes the closing of the main contacts and that during an opening operation, the main contact opening precedes the opening of the auxiliary contacts.
  • the angular phase shift mechanism comprises two connecting rod-crank mechanisms simultaneously driven by a common drive shaft, a first connecting rod-crank mechanism associated with the movable main contact and a second connecting rod-crank mechanism associated with the movable auxiliary contact.
  • the switch according to the first or second embodiment further comprises a second auxiliary circuit, for example a vacuum interrupter, arranged in parallel with said main circuit and said auxiliary circuit, and provided with arcing contacts.
  • a second auxiliary circuit for 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 are immersed in an insulating gas with high dielectric strength, such as sulfur hexafluoride (SF6), the second auxiliary circuit consisting of a bulb vacuum which also bathes in the insulating gas.
  • an insulating gas with high dielectric strength such as sulfur hexafluoride (SF6)
  • SF6 sulfur hexafluoride
  • the second auxiliary circuit consisting of a bulb vacuum which also bathes in the insulating gas.
  • the sealed or non-sealed enclosure 4 of the switch is filled with air or with a dielectric gas such as sulfur hexafluoride (SF6) and comprises a current arrival range 1 and a current departure range 2.
  • the arrival range 1 is divided into three conductive branches 1a, 1b and 1c.
  • the two branches 1a and 1b respectively carry at their end two fixed main contacts 30a and 30b, while the branch 1c carries at its end a fixed auxiliary contact 35.
  • the fixed main contacts 30a and 30b are capable of cooperating with mobile main contacts 20a and 20b pivotally mounted about an axis 3; the fixed auxiliary contact 35 cooperates with a mobile auxiliary contact 25, also pivotally mounted around the axis 3.
  • the axis 3 is carried by two fixed conducting branches 2a and 2b which meet at the level of the starting area 2.
  • the movable auxiliary contact 25 is electrically connected to the branches 2a and 2b, therefore at 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 with respect to the main circuit formed by the main contacts 20a, 20b, 30a and 30b.
  • a ball 26 housed in a bore made in the movable auxiliary contact 25 is held 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 ball locking mechanism with two pseudo-stable positions, which makes it possible to introduce variations of the relative angular positions between on the one hand the movable main contacts 20a, 20b and on the other hand the movable auxiliary contact 25.
  • a third electrical circuit comprising a vacuum bulb 15 known per se, connected on the one hand to the track 1 by the electrical connection 16, and on the other hand to the track 2 by the electrical connection 19, is arranged in parallel with respect to the main and auxiliary circuits.
  • the movable rod 14 of the vacuum interrupter 15 is connected by a connecting rod 11 equipped 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 mobile auxiliary contact 25 is ahead of the main mobile contacts 20a and 20b.
  • crank 9 is rotated about the axis 10.
  • the crank 9 drives the connecting rod 7, the drive rod 6 and by the same two main contacts mobile 20a and 20b and the two plates 28a and 28b.
  • the latter in turn drive, through the ball locking mechanism, the movable auxiliary contact 25.
  • the movable auxiliary contact 25 comes into contact with the fixed auxiliary contact 15, the main contacts being always open.
  • the ball locking mechanism activated at the end of the closing stroke has 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 in fact become very small, so that during the next opening of the switch ( Figure 6), the opening of the main and auxiliary contacts will take place at approximately the same time.
  • the opening of the main contacts will slightly precede the opening of the auxiliary contact.
  • the switch is equipped with the third electrical circuit comprising the vacuum bulb 15, the drive of the crank 9 simultaneously controls the opening and closing of the vacuum bulb 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 and closing operations of 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).
  • FIG. 7 gives by way of illustration an opening and closing diagram of the three electrical circuits (main, auxiliary, vacuum interrupter) as a function of time.
  • the three circuits are naturally open.
  • the closing maneuver we first witness the closing of the auxiliary circuit, then the closing of the vacuum interrupter, then only the closing of the main circuit, and finally, at the end of the crank stroke 9 , when the vacuum interrupter is reopened.
  • the auxiliary contacts can be made of an arc-resistant material, and with possible compensation against their wear.
  • the preferred embodiment described above is particularly well suited to a medium voltage or very high voltage switch, in which the sealed enclosure 1 is filled with a dielectric gas such as SF6; the vacuum interrupter 15 will then bathe in this dielectric gas as it has already been proposed in French patent FR-A-2,655,766.
  • a dielectric gas such as SF6
  • Figures 8 to 12 illustrate a second embodiment of the invention; their reference numbers are identical to those of the first embodiment for the elements common to the two embodiments.
  • the enclosure 4 the arrival and departure ranges 2, the fixed main contact 30a, the fixed auxiliary contact 35, the mobile main contact 20a and the mobile auxiliary contact 25, these two latter being pivotally mounted around of axis 3.
  • the auxiliary circuit is arranged in parallel with respect to the main circuit.
  • 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 movable main contact 20a and the movable auxiliary contact 25 during the rotation of the crank 9.
  • the movable main contact 20a is substantially in phase with the movable auxiliary contact 25.
  • the movable auxiliary contact 25 is respectively early or late by relative to the mobile main contact 20a. Consequently the opening (O) and closing (F) cycles of the switch shown in FIG. 12 are symmetrical.
  • Figure 11 shows the switch in the closed position.
  • a third electrical circuit comprising a vacuum interrupter 15 is arranged in parallel with respect to the main and auxiliary circuits.
  • the opening and closing diagram ( Figure 12) remains perfectly symmetrical.
  • the vacuum bulb circuit will close first, followed by the closing of the auxiliary circuit, then the main circuit, and finally the bulb will open again.
  • the bulb circuit will close first, followed by the opening of the main circuit, then the auxiliary circuit, and finally the bulb will open again.

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)

Abstract

The invention relates to a medium- or high-voltage circuit breaker or switch comprising:- - a main circuit equipped with at least one main fixed contact (30a) and with at least one main moving contact (30b) mounted so as to pivot about a spindle (3); - an auxiliary circuit, arranged in parallel with respect to the main circuit and equipped with a fixed auxiliary contact (35) and with a moving auxiliary contact (25) mounted so as to pivot on the same spindle. According to the invention, the mechanism for driving the moving contacts includes a mechanism for variable angular phase-shifting, able to make the relative angular positions of the moving auxiliary contact and of the moving main contact vary during operation of the switch. <IMAGE>

Description

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

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'entraînement destiné à entraîner 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 shunting circuit, arranged in parallel with the main circuit and provided with a fixed auxiliary contact and a movable auxiliary contact pivotally mounted on the same axis;
  • a drive mechanism intended to drive simultaneously 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 drawback of such a switch lies in the fact that there is a direct and rigid coupling in rotation between the movable main contact and the movable auxiliary contact.

L'invention a pour but de remédier à cet inconvénient.The invention aims to remedy this drawback.

Selon l'invention, le mécanisme d'entraînement inclut un mécanisme de déphasage angulaire variable apte à faire varier les positions angulaires relatives du contact auxiliaire mobile et du contact principal mobile lors des manoeuvres de l'interrupteur.According to the invention, the drive mechanism includes a variable angular phase shift mechanism capable of varying the relative angular positions of the movable auxiliary contact and the movable main contact during the operations of the switch.

Selon un premier mode de réalisation, le mécanisme de déphasage angulaire est adapté à autoriser deux positions angulaires relatives pseudo-stables, une première position angulaire activée enfin de course d'ouverture de l'interrupteur et pour laquelle, lors de la manoeuvre de fermeture suivante, la fermeture des contacts auxiliaires précède la fermeture des contacts principaux, et une seconde position angulaire activée en fin de course de fermeture de l'interrupteur et pour laquelle, lors de la manoeuvre d'ouverture suivante, l'ouverture des contacts principaux s'effectue sensiblement au même moment que l'ouverture des contacts auxiliaires.According to a first embodiment, the angular phase shift mechanism is adapted to authorize two pseudo-stable relative angular positions, a first angular position finally activated for the opening stroke of the switch and for which, during the following closing maneuver , the closing of the auxiliary contacts precedes the closing of the main contacts, and a second angular position activated at the end of the switch closing stroke and for which, during the next opening operation, the opening of the main contacts performs substantially at the same time as the opening of the auxiliary contacts.

A cet effet, le contact auxiliaire mobile est disposé entre deux plaques articulées autour dudit axe, solidaires en rotation avec ledit contact principal mobile et sollicités l'un vers l'autre à l'aide de moyens ressorts; un mécanisme de verrouillage à bille à deux positions est intercalé entre lesdites plaques et le contact auxiliaire mobile, la première position angulaire étant activée au moyen d'une première butée, et la seconde position angulaire étant activée au moyen d'une seconde butée formée par le contact auxiliaire mobile.To this end, the movable auxiliary contact is disposed between two plates articulated around said axis, integral in rotation with said movable main contact and biased towards one another by means of springs; a two position ball locking mechanism is interposed between said plates and the movable auxiliary contact, the first angular position being activated by means of a first stop, and the second angular position being activated by means of a second stop formed by the mobile auxiliary contact.

Selon un second mode de réalisation, le mécanisme de déphasage angulaire est adapté à autoriser des variations continues du déphasage angulaire lors des manoeuvres de l'interrupteur, de sorte que lors d'une manoeuvre de fermeture, la fermeture des contacts auxiliaires précède la fermeture des contacts principaux et que lors d'une manoeuvre d'ouverture, l'ouverture de contact principaux précède l'ouverture des contacts auxiliaires.According to a second embodiment, the angular phase shift mechanism is adapted to allow continuous variations of the angular phase shift during the operations of the switch, so that during a closing operation, the closing of the auxiliary contacts precedes the closing of the main contacts and that during an opening operation, the main contact opening precedes the opening of the auxiliary contacts.

A cet effet, le mécanisme de déphasage angulaire comprend deux mécanismes bielle-manivelle simultanément entraînés par un arbre moteur commun, un premier mécanisme bielle-manivelle associé au contact principal mobile et un second mécanisme bielle-manivelle associé au contact auxiliaire mobile.To this end, the angular phase shift mechanism comprises two connecting rod-crank mechanisms simultaneously driven by a common drive shaft, a first connecting rod-crank mechanism associated with the movable main contact and a second connecting rod-crank mechanism associated with the movable auxiliary contact.

De préférence, l'interrupteur selon le premier ou le second mode de réalisation 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 according to the first or second embodiment further comprises a second auxiliary circuit, for 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 are immersed in an insulating gas with high dielectric strength, such as sulfur hexafluoride (SF6), the second auxiliary circuit consisting of a bulb vacuum which also bathes in the insulating gas.

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre de différents modes de réalisation de l'invention donnés à titre d'exemple non limitatifs en référence aux dessins annexés, dans lesquels:

  • La figure 1 est une vue schématique latérale d'un premier mode de réalisation de l'invention,
  • La figure 2 est une vue schématique de face du circuit principal et du circuit auxiliaire du premier mode de réalisation selon la figure 1.
  • Les figures 3 à 6 illustrent le fonctionnement du premier mode de réalisation 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 le premier mode de réalisation.
  • La figure 8 est une vue schématique latérale d'un second mode de réalisation de l'invention.
  • Les figures 9 à 11 illustrent le fonctionnement du second 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 second mode de réalisation.
Other advantages and characteristics will emerge more clearly from the description which follows of different embodiments of the invention given by way of nonlimiting example with reference to the appended drawings, in which:
  • FIG. 1 is a schematic side view of a first embodiment of the invention,
  • FIG. 2 is a schematic front view of the main circuit and the auxiliary circuit of the first embodiment according to FIG. 1.
  • Figures 3 to 6 illustrate the operation of the first embodiment 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 the opening (Figure 6).
  • FIG. 7 illustrates a possible diagram with regard to the opening and closing sequences of the switch according to the first embodiment.
  • Figure 8 is a schematic side view of a second embodiment of the invention.
  • Figures 9 to 11 illustrate the operation of the second embodiment according to Figure 8, the switch being respectively in the open position (Figure 9), during closing or opening (Figure 10), and finally in position closed, (figure 11).
  • FIG. 12 illustrates a possible diagram with regard to the opening and closing sequences of the switch according to the second embodiment.

En référence aux figures 1 et 2, illustrant un premier mode de réalisation, 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 1c porte à son extrémité un contact auxiliaire fixe 35.With reference to FIGS. 1 and 2, illustrating a first embodiment, the sealed or non-sealed enclosure 4 of the switch is filled with air or with a dielectric gas such as sulfur hexafluoride (SF6) and comprises a current arrival range 1 and a current departure range 2. The arrival range 1 is divided into three conductive branches 1a, 1b and 1c. The two branches 1a and 1b respectively carry at their end two fixed main contacts 30a and 30b, while the branch 1c 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 mobile main contacts 20a and 20b pivotally mounted about an axis 3; the fixed auxiliary contact 35 cooperates with a mobile auxiliary contact 25, also pivotally mounted around the 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 conducting branches 2a and 2b which meet at the level of the starting area 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 at 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 with respect to the main circuit formed by the main contacts 20a, 20b, 30a and 30b.

Une tige d'entraînement 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 main movable contacts 20a and 20b and is connected to a crank 9 rotatably mounted around the axis 10 by means of 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'entraînement 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 Figure 2, two plates 28a and 28b, arranged on either side of the movable auxiliary contact 25, also pivotally mounted about the axis 3, traversed by the drive rod and urged one towards the another 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 made in the movable auxiliary contact 25 is held 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 ball locking mechanism with two pseudo-stable positions, which makes it possible to introduce variations of the relative angular positions between on the one hand the movable main contacts 20a, 20b and on the other hand the movable 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 bulb 15 known per se, connected on the one hand to the track 1 by the electrical connection 16, and on the other hand to the track 2 by the electrical connection 19, is arranged in parallel with respect to the main and auxiliary circuits. The movable rod 14 of the vacuum interrupter 15 is connected by a connecting rod 11 equipped with a spring 12 to the crank 9. One can advantageously refer to document FR-A-2,655,766 which describes the mechanism associated with the vacuum bulb.

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 FIGS. 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 mobile 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 entraîne la bielle 7, la tige d'entraînement 6 et par la même les deux contacts principaux mobiles 20a et 20b et les deux plaques 28a et 28b. Ces dernières entraînent à leur tour, au travers du mécanisme de verrouillage à bille, le contact auxiliaire mobile 25.To close the switch (Figure 4), the crank 9 is rotated about the axis 10. The crank 9 drives the connecting rod 7, the drive rod 6 and by the same two main contacts mobile 20a and 20b and the two plates 28a and 28b. The latter 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 fixed auxiliary contact 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 strikes a stop 35a of the fixed auxiliary contact 35, which has the effect of tilting the ball locking mechanism in the position 26b; simultaneously, the movable main contacts 20a and 20b close on the fixed main 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, has 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 in fact become very small, so that during the next opening of the switch (Figure 6), the opening of the main and auxiliary contacts will take place at approximately the same time. Preferably, the opening of the main contacts will 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 varying the angular phase shift so that during the next closing, the closing of the auxiliary contacts again precedes the closing of 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'entraînement 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 electrical circuit comprising the vacuum bulb 15, the drive of the crank 9 simultaneously controls the opening and closing of the vacuum bulb 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 and closing operations of 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 assite 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.FIG. 7 gives by way of illustration an opening and closing diagram of the three electrical circuits (main, auxiliary, vacuum interrupter) as a function of time. In the open stable position (O), the three circuits are naturally open. When the closing maneuver is engaged, we first witness the closing of the auxiliary circuit, then the closing of the vacuum interrupter, then only the closing of the main circuit, and finally, at the end of the crank stroke 9 , when the vacuum interrupter is reopened.

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).Consequently in the closed closed position (F), the main and auxiliary circuits are closed, while the vacuum interrupter is open. When the opening operation is triggered, there is first the closing of the vacuum bulb, then after a certain time, the opening of the main circuit immediately followed by the opening of the auxiliary circuit, and finally the opening of the vacuum interrupter, to return to the stable open position (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 the switch is closed, the auxiliary circuit is closed before the vacuum interrupter is closed, pre-ignition is therefore carried out at the auxiliary circuit, thus eliminating the well-known phenomena of multiple strikes associated with vacuum interrupters which generate harmful overvoltages for certain applications, for example medium voltage motors.

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, this reduces erosion on the main contacts, as well as the force required to close the main contacts. The auxiliary contacts can be made of an arc-resistant material, and with possible compensation against their wear.

Le mode de réalisation 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 déja été proposé dans le brevet français FR-A-2.655.766.The preferred embodiment described above is particularly well suited to a medium voltage or very high voltage switch, in which the sealed enclosure 1 is filled with a dielectric gas such as SF6; the vacuum interrupter 15 will then bathe in this dielectric gas as it has already been proposed in French patent FR-A-2,655,766.

Les figures 8 à 12 illustrent un second mode de réalisation de l'invention; leurs numéros de référence sont identiques à ceux du premier mode de réalisation pour les éléments communs aux deux modes de réalisation.Figures 8 to 12 illustrate a second embodiment of the invention; their reference numbers are identical to those of the first embodiment for the elements common to the two embodiments.

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 dérniers 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 the enclosure 4, the arrival and departure ranges 2, the fixed main contact 30a, the fixed auxiliary contact 35, the mobile main contact 20a and the mobile auxiliary contact 25, these two latter being pivotally mounted around of axis 3. The auxiliary circuit is arranged in parallel with respect to the main circuit.

La tige d'entraînement 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'entraînement 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 movable main contact 20a and the movable auxiliary contact 25 during the rotation of the crank 9. In the open position of the switch (Figure 9) the movable main contact 20a is substantially in phase with the movable auxiliary contact 25. During closing or opening (Figure 10), the movable auxiliary contact 25 is respectively early or late by relative to the mobile main contact 20a. Consequently the opening (O) and closing (F) cycles of the switch shown in FIG. 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 embodiment, a third electrical circuit comprising a vacuum interrupter 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 interrupter 15 is added, the latter being controlled identically to the first embodiment, the opening and closing diagram (Figure 12) remains perfectly symmetrical. When closing, the vacuum bulb circuit will close first, followed by the closing of the auxiliary circuit, then the main circuit, 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 opening of the main circuit, then the auxiliary circuit, and finally the bulb will open again.

Claims (13)

Interrupteur électrique comprenant : - un circuit principal doté d'au moins un contact principal fixe (30a, 30b) et d'au moins un contact principal mobile (20a, 20b) monté à pivotement autour d'un axe (3); - un circuit auxiliaire disposé en parallèle par rapport au circuit principal et doté d'un contact auxiliaire fixe (35) et d'un contact auxiliaire mobile (25) articulé autour dudit axe (3); - un mécanisme d'entraînement (6 à 10) destiné à entraîner simultanément en rotation autour dudit axe (3), le contact principal mobile et le contact auxiliaire mobile, caractérisé par le fait que ledit mécanisme d'entraînement inclut un mécanisme de déphasage angulaire variable (26, 28a, 28b ; 6a, 7a, 8a, 9, 10) apte à faire varier les positions angulaires relatives du contact auxiliaire mobile et du contact principal mobile lors des manoeuvres de l'interrupteur.Electric switch including: - a main circuit provided with at least one fixed main contact (30a, 30b) and at least one movable main contact (20a, 20b) pivotally mounted around an axis (3); - an auxiliary circuit arranged in parallel with respect to the main circuit and provided with a fixed auxiliary contact (35) and a movable auxiliary contact (25) articulated around said axis (3); - a drive mechanism (6 to 10) intended to drive simultaneously in rotation about said axis (3), the movable main contact and the movable auxiliary contact, characterized in that said drive mechanism includes a variable angular phase shift mechanism (26, 28a, 28b; 6a, 7a, 8a, 9, 10) capable of varying the relative angular positions of the movable auxiliary contact and the main contact mobile during switch operations. Interrupteur selon la revendication 1, caractérisé par le fait que ledit mécanisme de déphasage angulaire est adapté à autoriser deux positions angulaires relatives pseudo-stables (26a, 26b), une première position angulaire (26a) activée enfin de course d'ouverture de l'interrupteur et pour laquelle, lors de la manoeuvre de fermeture suivante, la fermeture des contacts auxiliaires précède la fermeture des contacts principaux, et une seconde position angulaire (26b) activée en fin de course de fermeture de l'interrupteur et pour laquelle, lors de la manoeuvre d'ouverture suivante, l'ouverture des contacts principaux s'effectue sensiblement au même moment que l'ouverture des contacts auxiliaires.Switch according to claim 1, characterized in that said angular phase shift mechanism is adapted to authorize two pseudo-stable relative angular positions (26a, 26b), a first angular position (26a) activated finally of the opening stroke of the switch and for which, during the next closing operation, the closing of the auxiliary contacts precedes the closing of the main contacts, and a second angular position (26b) activated at the end of the switch closing stroke and for which, when the following opening operation, the opening of the main contacts takes place at substantially the same time as the opening of the auxiliary contacts. Interrupteur selon la revendication 2, caractérisé par le fait que le contact auxiliaire mobile (25) est disposé entre deux plaques (28a, 28b) articulées autour dudit axe (3), solidaires en rotation avec ledit contact principal mobile et sollicités l'un vers l'autre à l'aide de moyens ressorts (27), qu'un mécanisme de verrouillage à bille (26) à deux positions est intercalé entre lesdites plaques et ledit contact auxiliaire mobile, que ladite première position angulaire (26a) est activée au moyen d'une première butée (5) et que ladite seconde position angulaire (26b) est activée au moyen d'une seconde butée (35a) formée par le contact auxiliaire mobile.Switch according to claim 2, characterized in that the movable auxiliary contact (25) is arranged between two plates (28a, 28b) articulated around said axis (3), integral in rotation with said movable main contact and urged one towards the other by means of spring means (27), that a ball locking mechanism (26) in two positions is interposed between said plates and said movable auxiliary contact, that said first angular position (26a) is activated at by means of a first stop (5) and that said second angular position (26b) is activated by means of a second stop (35a) formed by the movable auxiliary contact. Interrupteur selon la revendication 3, caractérisé par le fait que le mécanisme de verrouillage à bille comprend une bille (26) logée dans un perçage ménagé dans le contact auxiliaire mobile, et deux paires de logements disposées face à face dans lesdites plaques, pour recevoir ladite bille et ainsi définir les deux positions angulaires pseudo-stables.Switch according to claim 3, characterized in that the ball locking mechanism comprises a ball (26) housed in a bore formed in the movable auxiliary contact, and two pairs of housings arranged face to face in said plates, for receiving said ball and thus define the two pseudo-stable angular positions. Interrupteur selon l'une quelconque des revendications précédentes, caractérisé par le fait que lors de la manoeuvre d'ouverture, l'ouverture des contacts principaux précède très légèrement l'ouverture des contacts auxiliaires.Switch according to any one of the preceding claims, characterized in that during the opening operation, the opening of the main contacts very slightly precedes the opening of the auxiliary contacts. Interrupteur selon la revendication 1, caractérisé par le fait que ledit mécanisme de déphasage angulaire (6, 7, 8 ; 6a, 7a, 8a) est adapté à autoriser des variations continues du déphasage angulaire lors des manoeuvres de l'interrupteur, de sorte que lors d'une manoeuvre de fermeture, la fermeture des contacts auxiliaires précède la fermeture des contacts principaux et que lors d'une manoeuvre d'ouverture, l'ouverture de contact principaux précède l'ouverture des contacts auxiliaires.Switch according to Claim 1, characterized in that the said angular phase shift mechanism (6, 7, 8; 6a, 7a, 8a) is adapted to allow continuous variations in the angular phase shift during the operations of the switch, so that during a closing operation, the closing of the auxiliary contacts precedes the closing of the main contacts and that during an opening operation, the opening of the main contacts precedes the opening of the auxiliary contacts. Interrupteur selon l'une des revendications 1 ou 6, caractérisé par le fait que ledit mécanisme de déphasage angulaire comprend deux mécanismes bielle-manivelle simultanément entraînés par un arbre moteur commun, un premier mécanisme bielle-manivelle (6, 7, 8) associé au contact principal mobile et un second mécanisme bielle-manivelle associé (6a, 7a, 8a) au contact auxiliaire mobile.Switch according to one of Claims 1 or 6, characterized in that the said angular phase shift mechanism comprises two connecting rod-crank mechanisms simultaneously driven by a common drive shaft, a first connecting rod-crank mechanism (6, 7, 8) associated with the mobile main contact and a second connecting rod-crank mechanism associated (6a, 7a, 8a) with the mobile auxiliary contact. Interrupteur selon l'une des revendications 1 à 7, caractérisé par le fait que ledit circuit principal et ledit circuit auxiliaire baigne dans un gaz à forte tenue diélectrique tel que le SF6.Switch according to one of claims 1 to 7, characterized in that said main circuit and said auxiliary circuit is immersed in a gas with high dielectric strength such as SF6. Interrupteur selon l'une quelconque des revendications 1 à 8, caractérisé par le fait qu'il comprend en outre un second circuit auxiliaire (15) disposé en parallèle avec ledit circuit principal et ledit circuit auxiliaire, et doté de contacts d'arc.Switch according to any one of claims 1 to 8, characterized in that it further comprises a second auxiliary circuit (15) arranged in parallel with said main circuit and said auxiliary circuit, and provided with arcing contacts. Interrupteur selon la revendication 9, caractérisé par le fait que ledit second circuit auxiliaire comprend un contact d'arc mobile et un contact d'arc fixe, que lors d'une manoeuvre de fermeture, la fermeture des contacts d'arc s'effectuant sensiblement au même moment que la fermeture des contacts auxiliaires, et que lors d'une manoeuvre d'ouverture l'ouverture des contacts auxiliaires précède l'ouverture des contacts d'arc.Switch according to claim 9, characterized in that said second auxiliary circuit comprises a movable arcing contact and a fixed arcing contact, that during a closing operation, the closing of the arcing contacts taking place substantially at the same time as the closing of the auxiliary contacts, and that during an opening operation, the opening of the auxiliary contacts precedes the opening of the arcing contacts. Interrupteur selon l'une des revendications 9 ou 10 caractérisé par le fait que ledit second circuit auxiliaire (15) baigne également dans un gaz à forte tenue diélectrique tel que le SF6.Switch according to one of claims 9 or 10 characterized in that said second auxiliary circuit (15) is also immersed in a gas with high dielectric strength such as SF6. Interrupteur selon l'une des revendications 9 ou 10, caractérisé par le fait que ledit second circuit auxiliaire est constitué par une ampoule à vide.Switch according to one of claims 9 or 10, characterized in that said second auxiliary circuit is constituted by a vacuum interrupter. Interrupteur selon l'une quelconque des revendications 1 à 12, caractérisé par le fait qu'il constitue le circuit d'interruption d'un disjoncteur moyenne tension.Switch according to any one of Claims 1 to 12, characterized in that it constitutes the circuit for interrupting 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)

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FR9214356 1992-11-26
FR9214356 1992-11-26

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ES (1) ES2130239T3 (en)

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CN102403160A (en) * 2011-11-29 2012-04-04 浙江开关厂有限公司 Quick three working position isolation switch
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
EP2565897A1 (en) * 2011-08-29 2013-03-06 Hitachi Ltd. Switchgear and switchgear operating method
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FR2980632A1 (en) * 2011-09-23 2013-03-29 Schneider Electric Ind Sas Switching device i.e. medium voltage switching device, for use in current transmission line, has sealed enclosure filled with dielectric fluid comprising fluorinated alkene and/or ketone, and housing disconnector and/or vacuum bulb

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EP0800191A3 (en) * 1996-04-04 2000-10-18 ABB Hochspannungstechnik AG Circuit breaker
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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
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FR2980632A1 (en) * 2011-09-23 2013-03-29 Schneider Electric Ind Sas Switching device i.e. medium voltage switching device, for use in current transmission line, has sealed enclosure filled with dielectric fluid comprising fluorinated alkene and/or ketone, and housing disconnector and/or vacuum bulb
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Publication number Publication date
JPH06236717A (en) 1994-08-23
DE69323160D1 (en) 1999-03-04
DE69323160T2 (en) 1999-09-02
EP0599742B1 (en) 1999-01-20
ES2130239T3 (en) 1999-07-01
CA2109986A1 (en) 1994-05-27
CN1089389A (en) 1994-07-13
CN1034304C (en) 1997-03-19

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