EP0693763B1 - M.T. electrical switches - Google Patents

M.T. electrical switches Download PDF

Info

Publication number
EP0693763B1
EP0693763B1 EP19950410067 EP95410067A EP0693763B1 EP 0693763 B1 EP0693763 B1 EP 0693763B1 EP 19950410067 EP19950410067 EP 19950410067 EP 95410067 A EP95410067 A EP 95410067A EP 0693763 B1 EP0693763 B1 EP 0693763B1
Authority
EP
European Patent Office
Prior art keywords
contact
switch
movable
cartridge
contacts
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
EP19950410067
Other languages
German (de)
French (fr)
Other versions
EP0693763A1 (en
Inventor
Gabriel Balsarin
Hugues Filiputti
Jacques Quenin
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 Industries SAS
Original Assignee
Schneider Electric Industries SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP0693763A1 publication Critical patent/EP0693763A1/en
Application granted granted Critical
Publication of EP0693763B1 publication Critical patent/EP0693763B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H33/6661—Combination with other type of switch, e.g. for load break switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • 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
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches

Definitions

  • the present invention relates to electrical multipole switches or circuit breakers medium voltage rotary.
  • a medium voltage electric circuit breaker as described in document FR 2 655 766 of the applicant, comprising a sealed enclosure filled with a gas such sulfur hexafluoride in which are arranged a pair of main contacts and a vacuum cartridge containing a pair of aligned arcing contacts, fixed and movable respectively electrically connected in parallel with said main contacts.
  • the aforementioned mobile contact is slidably mounted in the cartridge by being connected to a control mechanism cooperating with the main contact control mechanism so as to open the arcing contacts after the main contacts and close them before the main contacts.
  • the circuit is closed by the breaking member, that is to say the vacuum cartridge, which leads to significant design constraints in terms of cartridge.
  • a multi-pole rotary switch as described in the document FR 2 668 851 of the applicant, which consists mainly of an envelope of sealed revolution filled with a gas with high dielectric strength, the internal periphery of which door, by pole, a fixed input contact, a fixed output contact and a fixed start contact To the earth.
  • These contacts are angularly spaced and cooperate with a contact bridge in swivel knife shape carried by a rotary control shaft extending in the axis of the envelope, said shaft being able to selectively occupy three corresponding positions respectively to an open position, a closed position, and a position switch grounding.
  • this switch does not use the cutoff technique in a vacuum with known advantages.
  • the present invention solves the problem of creating a switch (or circuit breaker) rotary multipolar, using the technique of vacuum cutting, which is simple design and reduced bulk, and eliminating design constraints, mainly dimensional, linked to the passage of the nominal current through the cutoff and the switch closing operation on the same cutoff member.
  • the switching means comprise a pad switching electrically connected to the second bulb contact and a finger switching, one end of which is articulated around a substantially parallel axis or contributing to the axis of rotation of the conductive bridge, said finger connecting electrically the bridge to the aforementioned stud during the switching of the arc and the breaking of the circuit.
  • one of the ends of the switching finger is connected articulated and electrically to the bridge, at an intermediate point thereof, while that its other end is likely to come and stay in contact with the stud switching during switching and power failure.
  • the driver bridge comprises means drive in rotation of the finger, during the opening of the switch, after the switching and breaking of the circuit, and during closing, until the first main mobile contact passes in front of the switching pad prior to complete closing of the switch.
  • the switching finger is connected in an articulated manner and electrically by one of its ends to the switching pad, while its other end cooperates with the first movable contact of the bridge.
  • the switch includes automatic return means finger in position of contact with the first fixed contact of the switch, and temporary attachment means of the finger on the first movable contact of the bridge.
  • one of the fixed contacts of the switch is connected electrically to electrical cables, while the other is electrically connected to a set bars.
  • the switch further comprises a fourth fixed contact connected to the ground. capable of being electrically connected by the conductive bridge to the fixed contact connected to the cables electric.
  • the above-mentioned sequencing means comprise a extended fixed range provided on the aforementioned second fixed contact and a limited fixed range provided on the first fixed contact.
  • the above-mentioned sequencing means comprise two ranges fixed extensions provided respectively on the two fixed contacts.
  • the actuation mechanism of the movable contact of the bulb includes a cam rotated by a shaft coupled to the mechanism drive axle drive, said cam acting on two levers articulated by one of their ends around the same axis, said levers acting on a set slidably mounted in a support and integral with the movable contact of the bulb, the profile of the cam defining the opening and closing sequences of the bulb contacts.
  • the mobile assembly comprises two cylinders respectively exterior and interior provided from a bottom, said cylinders sliding one inside the other and comprising opposite lights intended for the passage of the two levers between two axes integral with the inner cylinder on which they are supported, said axes being slidably mounted by their ends in openings on the one hand in the outer cylinder, and on the other part in two flanges supporting the mechanism, elastic washers being compressed during mounting between the bottom of the inner cylinder and the bottom of the outer cylinder, said cylinder outside carrying the movable contact of the bulb.
  • the actuation mechanism comprises a stud secured to the contact movable arc and actuated by a drive mechanism cooperating with a system neutral passage comprising two links, each of the links comprising a end housed in an articulated manner in a semi-spherical housing belonging to a first part integral in translation with the movable arcing contact and a housed end of articulated way in a housing also semi-spherical belonging to a second fixed part, said links being resiliently held between these two parts, so as to be able to pivot around the axis of the semi-spherical housing provided in the room fixed when moving the moving contact.
  • the two links are housed in an articulated manner, by one of their ends, in two semi-sherical recesses provided respectively in two opposite walls of the stud, and by their opposite end, in two semi-spherical recesses provided in two contact blades mounted in opposition, on which are applied spring leaves, the contact and spring leaves being fixed relative to the mobile contact.
  • the links are housed in an articulated manner, by one of their ends, in two semi-spherical recesses provided in a fixed support and by their opposite ends, in two semi-spherical recesses provided respectively in two contact blades mounted in opposition and fixed on the latter.
  • the invention also relates to a vacuum switch intended in particular to ensure the break in a switch, of the type comprising a substantially cylindrical casing closed by two bottoms containing a fixed contact and a movable contact mu in translation by an actuation mechanism, this mechanism comprising the characteristics previously mentioned taken alone or in combination.
  • Figures 1 to 5 illustrate a first embodiment of a rotary switch according to the invention in different positions corresponding respectively to a closed position, an intermediate open position, an open position, an intermediate position of switch and a grounding position for the switch.
  • FIG. 6 illustrates an alternative embodiment of a switch according to the invention, in different positions corresponding to the different opening and closing stages previously mentioned.
  • Figure 7 illustrates a perspective view of a first embodiment of the mechanism actuating the contacts of the vacuum interrupter used in the invention.
  • Figure 8 illustrates a sectional view of the previous figure.
  • Figure 9 illustrates in a sectional view, an alternative embodiment of the mechanism the bulb contacts.
  • Figures 10 to 12 respectively illustrate a perspective view, a perspective view with cutaway, and a sectional view of the previous mechanism and Figures 13 and 14 two views in partial section of this same mechanism.
  • FIGS. 1 to 6 we see a three-pole medium voltage switch with gas isolation.
  • This switch I is housed in an insulating enclosure E containing the active parts of the switch, which is placed in a waterproof steel or metallized tank (not shown).
  • the aforementioned tank contains an insulating gas preferably maintained at a pressure close to atmospheric pressure, while the pressure inside the insulating envelope E will preferably be equal to or greater than this pressure.
  • the wall of enclosure E can be that of a gas-insulated installation or station or that of a pole or of the three poles of switch I.
  • this switch I comprises mainly inside the aforementioned insulating enclosure E and by pole: three studs 1, 2, 3 sealingly crossing the wall of the enclosure E, a disconnector or conductive bridge 4, consisting of two non-parallel blades 5, 6, carried by a control shaft A extending in the axis of the envelope E, said shaft A being connected to a control mechanism exterior (not shown), and a vacuum interrupter 8 comprising a fixed contact 9 and a movable contact 10 electrically connected respectively to two interior studs 12 and 11 of enclosure E, said movable contact 10 being connected to an actuation mechanism M.
  • first 1 of the studs crossing the enclosure wall E is electrically connected inside the enclosure has an internal stud 11, carrying a first fixed contact 1a and forms outside of the enclosure, a connection range 1b to a busbar B.
  • the second stud 2 forms outside the enclosure, a connection range 2b to electrical cables C and to inside a second fixed contact 2a.
  • the third stud 3 crossing the wall of the enclosure forms outside of this enclosure a connection range 3b to earth T and to inside the enclosure a third fixed contact 3a.
  • These three fixed contacts 1a, 2a, 3a are intended to cooperate with two movable contacts 5a, 6a formed respectively at the ends free of the blades 5, 6 of the driver bridge 4.
  • the switch I further comprises a switching finger 7, one of the ends 7a of which is articulated around the same axis X as the disconnector 4 and the other end of which 7b is capable of come into contact with pad 12 called switching pad, said pad 12 being placed at inside the enclosure E and electrically connected to the fixed contact 9 of the bulb 8.
  • This finger switch 7 is mechanically connected to bridge 4 so as to be rotated by said bridge, in the direction of opening of the switch I, as soon as the movable contact 5a exceeds the switching pad 12 and, in the closing direction, until this same contact 5a again passes in front of the switching pad 12.
  • the aforementioned second fixed contact 2a has a range contact 2c greater than the first fixed contact 1, this making it possible to establish the opening and closing sequences of the first and second movable contacts 5a, 6a.
  • the actuation mechanism M of the vacuum interrupter 8 mainly consists of a cam 13 moved by a control mechanism (not shown) mechanically connected to the drive shaft A of the driver bridge 4, said cam 13 actuating two levers 14, 15 acting on a movable assembly N carrying the movable contact 10 of the vacuum interrupter 8.
  • this switch I comprises substantially the same elements as that of the previous embodiment a few differences close. These differences are mainly due to the fact that the switching finger 16, of a length less than that of the previous embodiment, is mounted articulated by one of its ends 16a directly on the switching pad 12, while its opposite end 16b, cooperates with the first fixed contact 1a and the conductive bridge 4.
  • the ground connection pad 3 is located between the two fixed contacts 1a, 2a on the side of the switching pad 12, unlike the first embodiment in which it is located on the side opposite to the switching pad 12, and the two fixed contacts 1a, 2a, have extended contact areas 1c, 2c.
  • the conductive bridge consists of two blades 5, 6 parallel, and that the first fixed contact 1a is connected to cables C while the second fixed contact 2a is connected at the busbar B.
  • This switch I also includes latching means or hooking (not shown) of the movable contact Sa on the switching finger 16 allowing the disconnector 4 to drive said finger 16 over a certain rotation stroke of the disconnector 4, and means for automatically returning this finger 16 to a position in which it is again in contact with the first fixed contact 1a.
  • this vacuum switch D comprises a bulb 8 constituted mainly of a substantially cylindrical casing 8a containing two contacts respectively fixed and mobile 9, 10, the fixed contact 9 being electrically connected to the pad switching 12 previously mentioned, while the movable contact 10 is mounted sliding through one 8b of the bottoms of the envelope 8a while being connected to a mechanism actuation M.
  • this mechanism M comprises a cam 13 rotated by a shaft 21 coupled to the control shaft A of the driver bridge 4, said cam 13 acting on two levers 14, 15 mounted articulated by one of their ends 14a, 15a, about the same axis Y and of which the two opposite ends 14b, 15b form two arms in opposition cooperating with the cam 13.
  • This mobile assembly N comprises two shaped parts substantially cylindrical 22, 23 respectively exterior and interior, provided with a bottom 22a, 23a, sliding one inside the other, said parts 22, 23 comprising orifices 22b, 23b facing each other intended to allow the passage of the two aforementioned levers 14, 15, said levers 14, 15 being supported on two axes 30, 31 integral with the inner cylinder 23 and sliding through other lights 22c formed in the outer cylinder 22.
  • a set of elastic washers 32 is interposed between the two cylinders 22, 23, having been compressed during mounting between the two bottoms 22a, 23a of said parts 22, 23.
  • This movable assembly N is guided in translation by means of two machined slots 33a respectively in two flanges 33, 34 located on either side of the mechanism M and it serving as a support.
  • the actuation mechanism M of the bulb comprises, a stud 40 secured to the movable contact 10 of the bulb 8, said pad 40 being provided on its two respectively upper faces and lower 40a, 40b, of a semi-spherical recess intended to accommodate one of the ends of the two links 41, 42, the two opposite ends 41a, 42a of which are held by two flexible contact blades 43, 44 mounted in opposition.
  • these parts are preferably made of copper alloy.
  • Blades forming a spring 45, 46 are applied to the contact blades 43, 44 and maintain the pressure of the contacts hoses 43, 44 on the rods 41, 42 and on the pad 40.
  • Figures 10 to 14 show another embodiment of an actuating mechanism M operating according to the same principle as that of FIG. 9 but whose structure differs substantially like that of this figure.
  • all of the aforementioned constituents is housed in a support 70 which also performs the function of guiding the movable contact 10, and of the pad 40.
  • the two links 41, 42 each have one end housed in a semispherical housing 60a provided in a fixed support 60 and one end housed in a recess 63a, 64a provided in two contact blades 63, 64 belonging to the same room.
  • the links 41, 42 are held elastically between the support 60 and the blades contact 63, 64 by the spring blades 61, 62.
  • the switch I is in the closed position. In this position, the two movable contacts 5a, 6a of the disconnector 4 are positioned respectively on the two fixed contacts 1a and 2a and the switching finger 7 is in contact with the pad switching 12.
  • the vacuum interrupter 8 is in the closed position, however, the main part current from the electric cables C passes through the fixed stud 2, the bridge conductor 4, the fixed block 11 and the block 1 connected to the busbar B, without passing through the vacuum switch D.
  • the driver bridge 4 having been driven in the direction when switch I opens (see arrow), the first movable contact Sa on deck 4 is not no longer in contact with the first fixed contact 1a, while the second movable contact 6a is still in contact with the second fixed contact 2a thanks to its extended contact range.
  • the switching finger 7 is always in contact with the contact switching 12, so that as soon as the first mobile contact 5a has left the first fixed contact 1a, the current flows through the switching finger 7, the switching pad 12, the vacuum interrupter 8, to the fixed pad 1.
  • the vacuum interrupter 8 opens and interrupts the nominal current.
  • the first mobile contact Its bridge 4 is superimposed on the switching finger 7 and drives it towards the open position, at the same time as the second movable contact 6a leaves the second contact fixed 2a a in order to obtain the sectioning (FIG. 3). In this position the disconnector 4 and the bulb 8 are open.
  • the bridge driver 4 is driven in the opposite direction to the previous one.
  • the first contact mobile 5a driving the switching finger 7 in its course, passes in front of the stud switching 12 without touching it, while switching finger 7 comes into contact with this pad 12. From this moment, the switching finger 7 is detached from the contact mobile 5a which continues its rotational travel until the first fixed contact 1a, while the second movable contact 6a slides on the second fixed contact 2a.
  • the vacuum interrupter 8 which remains open until instant, closes (figure 1).
  • the movable contacts 5a, 6a of the bridge 4 and the finger 7 are driven simultaneously to the disconnector position of closed ground, illustrated in figure 5, from the open position illustrated in figure 3.
  • the switching finger 7 plays no role, just like the vacuum bulb 8 which remains opened. Note that the latter can close, if for construction reasons the actuator brings it to this state, but this has no influence on the closing on short circuit.
  • the earthing switch opens, the movable contacts 5a, 6a and the switching finger 7 are driven simultaneously to the open position (see figure 3).
  • the vacuum interrupter 8 remains open, or else if it had closed when closed at the earth, it opens again.
  • the switch I is closed when the conductive bridge 4 connects the first and second fixed contacts 1a, 2a, as illustrated at A, the vacuum interrupter 8 remaining closed, the main current flowing from the first contact fixed 1a connected to cables C, through bridge 4 and second contact 2a connected to busbar B.
  • the driver bridge 4 is driven in the direction of the arrow and drives in its travel the switching finger 16 which was in position D, to a position E.
  • the vacuum interrupter 8 opens and interrupts the nominal current.
  • the finger 16 disengages of the movable contact 5a and is brought back via a contact reminder system with the first fixed contact 1a.
  • the movable contact 5a then continues its course until the open position shown in C to obtain sectioning.
  • the movable contacts 5a, 6a of the bridge 4 rotate in the closing direction until position A.
  • the movable contact Sa of bridge 4 passes at the finger of switching 16, the Sa contact on the finger 16 is hooked, of the ratchet type, allowing a new drive of the finger 16 during a new opening maneuver.
  • the vacuum interrupter 8 closes.
  • the closing operation of the earthing switch is carried out when the driver bridge 4 connects the stud 3 connected to earth, to the fixed contact 1a connected to the cables presenting as the second fixed contact 2a, an extended contact range 1c.
  • Figures 1 to 6 have been described as illustrating a switch incorporating a vacuum interrupter designed to cut off the nominal current, these figures can also be considered to describe a circuit breaker in which the vacuum interrupter is designed to cut off a short-circuit current.
  • the lower axis 31 drives the inner cylinder 23 downward, which via elastic washers 32, drives the movable contact 10 and the outer cylinder 22.
  • the displacement of the pad 40 causes the displacement of the rods 41,42, the contact blades 43,44, the leaf springs 45,46, and of the movable contact 10 to the position shown in dotted lines.
  • the displacement of the lug 51 integral with the stud 40 is effected by means of the crank 50 comprising the light 52 authorizing a dead stroke of this crank 50 before actuate the lug 51, said dead stroke making it possible to sequence the opening and the bulb 8 closed relative to those of the disconnector.
  • FIGS. 13 and 14 illustrate the mechanism in two positions corresponding respectively to a position opening of the contacts 9, 10 of the bulb 8 and a closed position of said contacts.
  • the form of flexible contacts could be arranged so as to generate an attraction between said contacts, as a function of the intensity which passes through them, this in order to provoke an effort antagonistic to the repulsion effort of the contacts of the bulb.
  • the invention has therefore made it possible to solve the problem of incorporating the cut in the only opening maneuver (cut) which generates a sequence of particular functioning, the realization of this sequence being made complex because significant deviations from the stroke characteristics of gas-operated devices insulating at atmospheric pressure compared to devices operating in a vacuum.

Description

La présente invention concerne des interrupteurs ou disjoncteurs électriques multipolaires rotatifs moyenne tension.The present invention relates to electrical multipole switches or circuit breakers medium voltage rotary.

On connaít un disjoncteur électrique moyenne tension tel que décrit dans le document FR 2 655 766 de la demanderesse, comprenant une enceinte étanche remplie d'un gaz tel l'hexafluorure de soufre dans laquelle sont disposés une paire de contacts principaux et une cartouche à vide contenant une paire de contacts d'arc alignés respectivement fixe et mobile connectés électriquement en parallèle desdits contacts principaux. Le contact mobile précité est monté coulissant dans la cartouche en étant relié à un mécanisme de commande coopérant avec le mécanisme de commande des contacts principaux de manière à ouvrir les contacts d'arc après les contacts principaux et les fermer avant les contacts principaux. Or, dans cette réalisation, la fermeture du circuit est réalisée par l'organe de coupure, c'est-à-dire la cartouche à vide, ce qui entraíne des contraintes de conception importantes au niveau de la cartouche.We know a medium voltage electric circuit breaker as described in document FR 2 655 766 of the applicant, comprising a sealed enclosure filled with a gas such sulfur hexafluoride in which are arranged a pair of main contacts and a vacuum cartridge containing a pair of aligned arcing contacts, fixed and movable respectively electrically connected in parallel with said main contacts. The aforementioned mobile contact is slidably mounted in the cartridge by being connected to a control mechanism cooperating with the main contact control mechanism so as to open the arcing contacts after the main contacts and close them before the main contacts. Gold, in this embodiment, the circuit is closed by the breaking member, that is to say the vacuum cartridge, which leads to significant design constraints in terms of cartridge.

On connaít également un interrupteur rotatif multipolaire tel que décrit dans le document FR 2 668 851 de la demanderesse, qui est constitué principalement d'une enveloppe de révolution étanche remplie d'un gaz à rigidité diélectrique élevée, dont le pourtour interne porte, par pôle, un contact fixe d'entrée, un contact fixe de sortie et un contact fixe de mise à la terre. Ces contacts sont espacés angulairement et coopèrent avec un pont de contacts en forme de couteau pivotant porté par un arbre rotatif de commande s'étendant dans l'axe de l'enveloppe, ledit arbre pouvant occuper sélectivement trois positions correspondant respectivement à une position d'ouverture, une position de fermeture, et une position de mise à la terre de l'interrupteur. Or, cet interrupteur n'utilise pas la technique de la coupure dans le vide présentant les avantages connus.We also know a multi-pole rotary switch as described in the document FR 2 668 851 of the applicant, which consists mainly of an envelope of sealed revolution filled with a gas with high dielectric strength, the internal periphery of which door, by pole, a fixed input contact, a fixed output contact and a fixed start contact To the earth. These contacts are angularly spaced and cooperate with a contact bridge in swivel knife shape carried by a rotary control shaft extending in the axis of the envelope, said shaft being able to selectively occupy three corresponding positions respectively to an open position, a closed position, and a position switch grounding. However, this switch does not use the cutoff technique in a vacuum with known advantages.

La présente invention résout le problème qui consiste à créer un interrupteur (ou disjoncteur) rotatif multipolaire, utilisant la technique de la coupure dans le vide, qui soit de conception simple et d'encombrement réduit, et supprimant les contraintes de conception, principalement dimensionnelles, liées au passage du courant nominal à travers l'organe de coupure et à l'opération de fermeture de l'interrupteur sur ce même organe de coupure.The present invention solves the problem of creating a switch (or circuit breaker) rotary multipolar, using the technique of vacuum cutting, which is simple design and reduced bulk, and eliminating design constraints, mainly dimensional, linked to the passage of the nominal current through the cutoff and the switch closing operation on the same cutoff member.

A cet effet, la présente invention a pour objet un interrupteur électrique multipolaire moyenne tension du genre comprenant une enveloppe remplie d'un gaz d'isolation et renfermant par pôle, un premier et un second contact fixe situés le long de la paroi interne de l'enveloppe et reliés respectivement à une borne d'entrée et une borne de sortie, lesdits contacts fixes coopérant respectivement avec un premier et un second contacts mobiles portés par un pont conducteur mobile en rotation entraíné par un mécanisme de commande pour établir ou interrompre le circuit électrique entre la première et la seconde borne de raccordement, cet interrupteur étant caractérisé en ce qu' il comporte en outre :

  • une ampoule à vide renfermant un contact fixe et un contact mobile mu en translation par un mécanisme d'actionnement couplé au mécanisme de commande précité, l'un, dit premier, des contacts de l'ampoule étant relié électriquement au premier contact fixe précité de l'interrupteur, tandis que l'autre, dit second, est relié électriquement et temporairement au pont par des moyens de commutation ;
  • et des moyens de séquencement destinés à établir les séquences d'ouverture et de fermeture des contacts mobiles de l'interrupteur et de l'ampoule coopérant avec les moyens de commutation précités de façon qu'en position de fermeture, les contacts de l'ampoule soient fermés, le second contact de l'ampoule étant relié électriquement au pont conducteur , que pendant la manoeuvre d'ouverture, l'arc associé aux premiers contacts fixe et mobile commute à travers l'ampoule, qu'après un certain degré d'ouverture les contacts de l'ampoule s'ouvrent de manière à réaliser la coupure du circuit électrique, et que pendant la manoeuvre de fermeture de l'interrupteur, les contacts de l'ampoule ne se ferment qu'après la fermeture des premier et second contacts de l'interrupteur.
To this end, the subject of the present invention is a medium-voltage multipolar electrical switch of the kind comprising a casing filled with an insulating gas and containing, by pole, a first and a second fixed contact situated along the internal wall of the envelope and connected respectively to an input terminal and an output terminal, said fixed contacts respectively cooperating with first and second movable contacts carried by a movable conductive bridge in rotation driven by a control mechanism to establish or interrupt the circuit electric between the first and the second connection terminal, this switch being characterized in that it further comprises:
  • a vacuum interrupter containing a fixed contact and a movable contact moved in translation by an actuating mechanism coupled to the aforementioned control mechanism, one, known as the first, of the ampoule contacts being electrically connected to the aforementioned first fixed contact of the switch, while the other, said second, is electrically and temporarily connected to the bridge by switching means;
  • and sequencing means intended to establish the opening and closing sequences of the movable contacts of the switch and of the bulb cooperating with the aforementioned switching means so that in the closed position, the contacts of the bulb are closed, the second contact of the bulb being electrically connected to the driver bridge, that during the opening maneuver, the arc associated with the first fixed and movable contacts switches through the bulb, only after a certain degree of opening the bulb contacts open in such a way as to cut the electrical circuit, and that during the closing operation of the switch, the bulb contacts do not close until the first and second are closed switch contacts.

Selon une caractéristique particulière, les moyens de commutation comprennent un plot de commutation relié électriquement au second contact de l'ampoule et un doigt de commutation dont l'une des extrémités est articulée autour d'un axe sensiblement parallèle ou bien concourant à l'axe de rotation du pont conducteur , ledit doigt reliant électriquement le pont au plot précité pendant la commutation de l'arc et la coupure du circuit.According to a particular characteristic, the switching means comprise a pad switching electrically connected to the second bulb contact and a finger switching, one end of which is articulated around a substantially parallel axis or contributing to the axis of rotation of the conductive bridge, said finger connecting electrically the bridge to the aforementioned stud during the switching of the arc and the breaking of the circuit.

Selon une réalisation particulière, l'une des extrémités du doigt de commutation , est reliée de manière articulée et électriquement au pont, en un point intermédiaire de celui-ci, tandis que son autre extrémité est susceptible de venir et de rester en contact avec le plot de commutation pendant la commutation et la coupure du courant.According to a particular embodiment, one of the ends of the switching finger is connected articulated and electrically to the bridge, at an intermediate point thereof, while that its other end is likely to come and stay in contact with the stud switching during switching and power failure.

Selon une caractéristique particulière, le pont conducteur comporte des moyens d'entraínement en rotation du doigt, pendant l'ouverture de l'interrupteur, après la commutation et la coupure du circuit, et pendant la fermeture, jusqu'au moment où le premier contact mobile principal passe devant le plot de commutation préalablement à la fermeture complète de l'interrupteur.According to a particular characteristic, the driver bridge comprises means drive in rotation of the finger, during the opening of the switch, after the switching and breaking of the circuit, and during closing, until the first main mobile contact passes in front of the switching pad prior to complete closing of the switch.

Selon une variante de réalisation, le doigt de commutation est relié de manière articulée et électriquement par l'une de ses extrémités au plot de commutation, tandis que son autre extrémité coopère avec le premier contact mobile du pont.According to an alternative embodiment, the switching finger is connected in an articulated manner and electrically by one of its ends to the switching pad, while its other end cooperates with the first movable contact of the bridge.

Selon une autre caractéristique, l'interrupteur comporte des moyens de rappel automatique du doigt en position de contact avec le premier contact fixe de l'interrupteur, et des moyens d'accrochage temporaires du doigt sur le premier contact mobile du pont.According to another characteristic, the switch includes automatic return means finger in position of contact with the first fixed contact of the switch, and temporary attachment means of the finger on the first movable contact of the bridge.

Selon une autre caractéristique, l'un des contacts fixes de l'interrupteur est relié électriquement à des câbles électriques, tandis que l'autre, est relié électriquement à un jeu de barres.According to another characteristic, one of the fixed contacts of the switch is connected electrically to electrical cables, while the other is electrically connected to a set bars.

Avantageusement, l'interrupteur comporte en outre un quatrième contact fixe relié à la terre susceptible d'être relié électriquement par le pont conducteur au contact fixe relié aux câbles électriques.Advantageously, the switch further comprises a fourth fixed contact connected to the ground. capable of being electrically connected by the conductive bridge to the fixed contact connected to the cables electric.

Selon une réalisation particulière, les moyens de séquencement précités comprennent une plage fixe étendue prévue sur le second contact fixe précité et une plage fixe restreinte prévue sur le premier contact fixe.According to a particular embodiment, the above-mentioned sequencing means comprise a extended fixed range provided on the aforementioned second fixed contact and a limited fixed range provided on the first fixed contact.

Selon une autre réalisation, les moyens de séquencement précités comprennent deux plages fixes étendues prévues respectivement sur les deux contacts fixes.According to another embodiment, the above-mentioned sequencing means comprise two ranges fixed extensions provided respectively on the two fixed contacts.

Selon une autre caractéristique, le mécanisme d'actionnement du contact mobile de l'ampoule comprend une came entraínée en rotation par un arbre couplé au mécanisme d'entraínement du pont conducteur, ladite came agissant sur deux leviers articulés par l'une de leurs extrémités autour d'un même axe, lesdits leviers agissant sur un ensemble monté coulissant dans un support et solidaire du contact mobile de l'ampoule, le profil de la came définissant les séquences d'ouverture et de fermeture des contacts de l'ampoule.According to another characteristic, the actuation mechanism of the movable contact of the bulb includes a cam rotated by a shaft coupled to the mechanism drive axle drive, said cam acting on two levers articulated by one of their ends around the same axis, said levers acting on a set slidably mounted in a support and integral with the movable contact of the bulb, the profile of the cam defining the opening and closing sequences of the bulb contacts.

L'ensemble mobile comprend deux cylindres respectivement extérieur et intérieur pourvus d'un fond, lesdits cylindres coulissant l'un à l'intérieur de l'autre et comportant des lumières en regard destinées au passage des deux leviers entre deux axes solidaires du cylindre intérieur sur lesquels ils sont en appui, lesdits axes étant montés coulissant par leurs extrémités dans des lumières ménagées d'une part dans le cylindre extérieur, et d'autre part dans deux flasques supportant le mécanisme, des rondelles élastiques étant comprimées au montage entre le fond du cylindre intérieur et le fond du cylindre extérieur, ledit cylindre extérieur portant le contact mobile de l'ampoule.The mobile assembly comprises two cylinders respectively exterior and interior provided from a bottom, said cylinders sliding one inside the other and comprising opposite lights intended for the passage of the two levers between two axes integral with the inner cylinder on which they are supported, said axes being slidably mounted by their ends in openings on the one hand in the outer cylinder, and on the other part in two flanges supporting the mechanism, elastic washers being compressed during mounting between the bottom of the inner cylinder and the bottom of the outer cylinder, said cylinder outside carrying the movable contact of the bulb.

Selon une variante, le mécanisme d'actionnement comprend un plot solidaire du contact d'arc mobile et actionné par un mécanisme d'entraínement coopérant avec un système à passage de point mort comprenant deux biellettes, chacune des biellettes comportant une extrémité logée de manière articulée dans un logement semi-sphérique appartenant à une première pièce solidaire en translation du contact d'arc mobile et une extrémité logée de manière articulée dans un logement également semi-sphérique appartenant à une seconde pièce fixe, lesdites biellettes étant maintenues élastiquement entre ces deux pièces, de manière à pouvoir pivoter autour de l'axe du logement semi-sphérique prévu dans la pièce fixe lors du déplacement du contact mobile.According to a variant, the actuation mechanism comprises a stud secured to the contact movable arc and actuated by a drive mechanism cooperating with a system neutral passage comprising two links, each of the links comprising a end housed in an articulated manner in a semi-spherical housing belonging to a first part integral in translation with the movable arcing contact and a housed end of articulated way in a housing also semi-spherical belonging to a second fixed part, said links being resiliently held between these two parts, so as to be able to pivot around the axis of the semi-spherical housing provided in the room fixed when moving the moving contact.

Selon une réalisation particulière, les deux biellettes sont logées de manière articulée, par l'une de leurs extrémités, dans deux évidements semi-shériques prévus respectivement dans deux parois opposées du plot , et par leur extrémité opposée, dans deux évidements semi-sphériques prévus dans deux lames de contact montées en opposition, sur lesquelles sont appliquées des lames de ressort , les lames de contact et de ressort étant fixes par rapport au contact mobile.According to a particular embodiment, the two links are housed in an articulated manner, by one of their ends, in two semi-sherical recesses provided respectively in two opposite walls of the stud, and by their opposite end, in two semi-spherical recesses provided in two contact blades mounted in opposition, on which are applied spring leaves, the contact and spring leaves being fixed relative to the mobile contact.

Selon une variante, les biellettes sont logées de manière articulées, par l'une de leurs extrémités, dans deux évidements semi-sphériques prévus dans un support fixe et par leurs extrémités opposées, dans deux évidements semi-sphériques prévus respectivement dans deux lames de contact montées en opposition et fixées sur ce dernier.According to a variant, the links are housed in an articulated manner, by one of their ends, in two semi-spherical recesses provided in a fixed support and by their opposite ends, in two semi-spherical recesses provided respectively in two contact blades mounted in opposition and fixed on the latter.

L'invention a également pour objet un interrupteur à vide destiné notamment à assurer la coupure dans un interrupteur, du genre comprenant une enveloppe sensiblement cylindrique fermée par deux fonds renfermant un contact fixe et un contact mobile mu en translation par un mécanisme d'actionnement, ce mécanisme comportant les caractéristiques précédemment mentionnées prises seules ou en combinaison.The invention also relates to a vacuum switch intended in particular to ensure the break in a switch, of the type comprising a substantially cylindrical casing closed by two bottoms containing a fixed contact and a movable contact mu in translation by an actuation mechanism, this mechanism comprising the characteristics previously mentioned taken alone or in combination.

Mais d'autres avantages et caractéristiques de l'invention apparaítront mieux dans la description détaillée qui suit et se réfère aux dessins annexés donnés uniquement à titre d'exemple et dans lesquels :But other advantages and characteristics of the invention will appear better in the detailed description which follows and refers to the appended drawings given only as a example and in which:

Les figures 1 à 5 illustrent une première réalisation d'un interrupteur rotatif conforme à l'invention dans différentes positions correspondant respectivement à une position fermée, une position intermédiaire d'ouverture, une position ouverte, une position intermédiaire de fermeture et une position de mise à la terre de l'interrupteur.Figures 1 to 5 illustrate a first embodiment of a rotary switch according to the invention in different positions corresponding respectively to a closed position, an intermediate open position, an open position, an intermediate position of switch and a grounding position for the switch.

La figure 6 illustre une variante de réalisation d'un interrupteur conforme à l'invention, dans différentes positions correspondant aux différentes étapes d'ouverture et de fermeture précédemment mentionnées.FIG. 6 illustrates an alternative embodiment of a switch according to the invention, in different positions corresponding to the different opening and closing stages previously mentioned.

La figure 7 illustre une vue en perspective d'une première réalisation du mécanisme d'actionnement des contacts de l'ampoule sous vide utilisée dans l'invention.Figure 7 illustrates a perspective view of a first embodiment of the mechanism actuating the contacts of the vacuum interrupter used in the invention.

La figure 8 illustre une vue en coupe de la figure précédente.Figure 8 illustrates a sectional view of the previous figure.

La figure 9 illustre dans une vue en coupe, une variante de réalisation du mécanisme d'actionnement des contacts de l'ampoule.Figure 9 illustrates in a sectional view, an alternative embodiment of the mechanism the bulb contacts.

Les figures 10 à 12 illustrent respectivement une vue en perspective, une vue en perspective avec arraché, et une vue en coupe du mécanisme précédent et les figures 13 et 14 deux vues en coupe partielle de ce même mécanisme.Figures 10 to 12 respectively illustrate a perspective view, a perspective view with cutaway, and a sectional view of the previous mechanism and Figures 13 and 14 two views in partial section of this same mechanism.

Sur les figures 1 à 6, on voit un interrupteur tripolaire moyenne tension à isolement gazeux. Cet interrupteur I est logé dans une enceinte isolante E contenant les parties actives de l'interrupteur, laquelle est placée dans une cuve étanche en acier ou métallisée (non représentée). La cuve précitée contient un gaz d'isolation maintenu de préférence à une pression proche de la pression atmosphérique, tandis que la pression régnant à l'intérieur de l'enveloppe isolante E sera de préférence égale ou supérieure à cette pression. On notera que la paroi de l'enceinte E peut être celle d'une installation ou poste à isolation gazeuse ou celle d'un pôle ou des trois pôles de l'interrupteur I. Suivant une première forme de réalisation de l'invention décrite sur les figures 1 à 5, cet interrupteur I comprend principalement à l'intérieur de l'enceinte isolante précitée E et par pôle : trois plots 1, 2, 3 traversant de manière étanche la paroi de l'enceinte E, un sectionneur ou pont conducteur 4, constitué de deux lames non parallèles 5, 6, porté par un arbre de commande A s'étendant dans l'axe de l'enveloppe E, ledit arbre A étant relié à un mécanisme de commande extérieur (non représenté), et une ampoule à vide 8 comportant un contact fixe 9 et un contact mobile 10 reliés électriquement respectivement à deux plots intérieurs 12 et 11 de l'enceinte E, ledit contact mobile 10 étant relié à un mécanisme d'actionnement M. Le premier 1 des plots traversant la paroi de enceinte E est relié électriquement à l'intérieur de l'enceinte à un plot intérieur 11, portant un premier contact fixe 1a et forme à l'extérieur de l'enceinte, une plage de raccordement 1b à un jeu de barre B. Le second plot 2 forme à l'extérieur de l'enceinte, une plage de raccordement 2b à des câbles électriques C et à l'intérieur un second contact fixe 2a. Le troisième plot 3 traversant la paroi de l'enceinte forme à l'extérieur de cette enceinte une plage de raccordement 3b à la terre T et à l'intérieur de l'enceinte un troisième contact fixe 3a. Ces trois contacts fixes 1a, 2a, 3a sont destinés à coopérer avec deux contacts mobiles 5a, 6a formés respectivement aux extrémités libres des lames 5, 6 du pont conducteur 4. Suivant cette réalisation, l'interrupteur I comporte en outre un doigt de commutation 7 dont l'une des extrémités 7a est articulée autour du même axe X que le sectionneur 4 et dont l'autre extrémité 7b est susceptible de venir en contact avec le plot 12 appelé plot de commutation, ledit plot 12 étant placé à l'intérieur de l'enceinte E et relié électriquement au contact fixe 9 de l'ampoule 8. Ce doigt de commutation 7 est relié mécaniquement au pont 4 de façon à être entraíné en rotation par ledit pont, dans le sens de l'ouverture de l'interrupteur I, dès que le contact mobile 5a dépasse le plot de commutation 12 et, dans le sens de la fermeture, jusqu'au moment où ce même contact 5a passe de nouveau devant le plot de commutation 12.In Figures 1 to 6, we see a three-pole medium voltage switch with gas isolation. This switch I is housed in an insulating enclosure E containing the active parts of the switch, which is placed in a waterproof steel or metallized tank (not shown). The aforementioned tank contains an insulating gas preferably maintained at a pressure close to atmospheric pressure, while the pressure inside the insulating envelope E will preferably be equal to or greater than this pressure. We will note that the wall of enclosure E can be that of a gas-insulated installation or station or that of a pole or of the three poles of switch I. According to a first form of embodiment of the invention described in FIGS. 1 to 5, this switch I comprises mainly inside the aforementioned insulating enclosure E and by pole: three studs 1, 2, 3 sealingly crossing the wall of the enclosure E, a disconnector or conductive bridge 4, consisting of two non-parallel blades 5, 6, carried by a control shaft A extending in the axis of the envelope E, said shaft A being connected to a control mechanism exterior (not shown), and a vacuum interrupter 8 comprising a fixed contact 9 and a movable contact 10 electrically connected respectively to two interior studs 12 and 11 of enclosure E, said movable contact 10 being connected to an actuation mechanism M. first 1 of the studs crossing the enclosure wall E is electrically connected inside the enclosure has an internal stud 11, carrying a first fixed contact 1a and forms outside of the enclosure, a connection range 1b to a busbar B. The second stud 2 forms outside the enclosure, a connection range 2b to electrical cables C and to inside a second fixed contact 2a. The third stud 3 crossing the wall of the enclosure forms outside of this enclosure a connection range 3b to earth T and to inside the enclosure a third fixed contact 3a. These three fixed contacts 1a, 2a, 3a are intended to cooperate with two movable contacts 5a, 6a formed respectively at the ends free of the blades 5, 6 of the driver bridge 4. According to this embodiment, the switch I further comprises a switching finger 7, one of the ends 7a of which is articulated around the same axis X as the disconnector 4 and the other end of which 7b is capable of come into contact with pad 12 called switching pad, said pad 12 being placed at inside the enclosure E and electrically connected to the fixed contact 9 of the bulb 8. This finger switch 7 is mechanically connected to bridge 4 so as to be rotated by said bridge, in the direction of opening of the switch I, as soon as the movable contact 5a exceeds the switching pad 12 and, in the closing direction, until this same contact 5a again passes in front of the switching pad 12.

Sur ces figures, on voit également que le second contact fixe précité 2a présente une plage de contact 2c plus importante que le premier contact fixe 1, ceci permettant d'établir les séquences d'ouverture et de fermeture des premier et second contacts mobiles 5a, 6a.In these figures, it can also be seen that the aforementioned second fixed contact 2a has a range contact 2c greater than the first fixed contact 1, this making it possible to establish the opening and closing sequences of the first and second movable contacts 5a, 6a.

Le mécanisme d'actionnement M de l'ampoule à vide 8 se compose principalement d'une came 13 mue par un mécanisme de commande (non représenté) relié mécaniquement à l'arbre d'entraínement A du pont conducteur 4, ladite came 13 actionnant deux leviers 14, 15 agissant sur un ensemble mobile N portant le contact mobile 10 de l'ampoule à vide 8.The actuation mechanism M of the vacuum interrupter 8 mainly consists of a cam 13 moved by a control mechanism (not shown) mechanically connected to the drive shaft A of the driver bridge 4, said cam 13 actuating two levers 14, 15 acting on a movable assembly N carrying the movable contact 10 of the vacuum interrupter 8.

En se reportant plus particulièrement à la figure 6, on voit une variante de réalisation de l'interrupteur I de l'invention. Suivant cette réalisation, cet interrupteur I comprend sensiblement les mêmes éléments que celui de la réalisation précédente à quelques différences près. Ces différences tiennent principalement en ce que le doigt de commutation 16, d'une longueur inférieure à celui de la réalisation précédente, est monté articulé par l'une de ses extrémités 16a directement sur le plot de commutation 12, tandis que son extrémité opposée 16b, coopère avec le premier contact fixe 1a et le pont conducteur 4. D'autre part, suivant cette réalisation, le plot de raccordement à la terre 3 se situe entre les deux contacts fixes 1a, 2a du côté du plot de commutation 12, contrairement à la première réalisation dans laquelle il se situe du côté opposé au plot de commutation 12, et les deux contacts fixes 1a, 2a, comportent des plages de contact 1c, 2c étendues. On notera également que le pont conducteur est constitué de deux lames 5, 6 parallèles, et que le premier contact fixe 1a est relié aux câbles C tandis que le second contact fixe 2a est relié au jeu de barre B. Cet interrupteur I comporte également des moyens d'encliquetage ou d'accrochage (non représentés) du contact mobile Sa sur le doigt de commutation 16 permettant au sectionneur 4 d'entraíner ledit doigt 16 sur une certaine course de rotation du sectionneur 4, et des moyens de rappel automatique de ce doigt 16 vers une position dans laquelle il est de nouveau en contact avec le premier contact fixe 1a.Referring more particularly to FIG. 6, we see an alternative embodiment of the switch I of the invention. According to this embodiment, this switch I comprises substantially the same elements as that of the previous embodiment a few differences close. These differences are mainly due to the fact that the switching finger 16, of a length less than that of the previous embodiment, is mounted articulated by one of its ends 16a directly on the switching pad 12, while its opposite end 16b, cooperates with the first fixed contact 1a and the conductive bridge 4. On the other hand, according to this embodiment, the ground connection pad 3 is located between the two fixed contacts 1a, 2a on the side of the switching pad 12, unlike the first embodiment in which it is located on the side opposite to the switching pad 12, and the two fixed contacts 1a, 2a, have extended contact areas 1c, 2c. We will note also that the conductive bridge consists of two blades 5, 6 parallel, and that the first fixed contact 1a is connected to cables C while the second fixed contact 2a is connected at the busbar B. This switch I also includes latching means or hooking (not shown) of the movable contact Sa on the switching finger 16 allowing the disconnector 4 to drive said finger 16 over a certain rotation stroke of the disconnector 4, and means for automatically returning this finger 16 to a position in which it is again in contact with the first fixed contact 1a.

On décrira ci-après plusieurs réalisations particulières d'un interrupteur à vide avantageusement utilisé pour réaliser la coupure du circuit électrique dans un interrupteur conforme à l'une ou l'autre des réalisations précédemment décrites dans les figures 1 à 6.Several specific embodiments of a vacuum interrupter will be described below. advantageously used to cut the electrical circuit in a switch in accordance with one or other of the embodiments previously described in Figures 1 to 6.

Suivant ces réalisations, cet interrupteur à vide D comporte une ampoule 8 constituée principalement d'une enveloppe sensiblement cylindrique 8a contenant deux contacts respectivement fixe et mobile 9, 10, le contact fixe 9 étant relié électriquement au plot de commutation 12 précédemment mentionné, tandis que le contact mobile 10 est monté coulissant à travers l'un 8b des fonds de l'enveloppe 8a en étant relié à un mécanisme d'actionnement M. Selon une première réalisation de l'interrupteur, décrite sur les figures 7 et 8 ce mécanisme M comporte une came 13 entraínée en rotation par un arbre 21 couplé à l'arbre de commande A du pont conducteur 4, ladite came 13 agissant sur deux leviers 14, 15 montés articulés par l'une de leurs extrémités 14a, 15a, autour d'un même axe Y et dont les deux extrémités opposées 14b, 15b forment deux bras en opposition coopérant avec la came 13. Ces deux leviers 14, 15 agissent sur un ensemble mobile N relié au contact mobile 10 de l'ampoule 8. Cet ensemble mobile N comprend deux pièces de forme sensiblement cylindriques 22, 23 respectivement extérieure et intérieure, pourvues d'un fond 22a, 23a, coulissant l'une à l'intérieur de l'autre, lesdites pièces 22, 23 comportant des orifices 22b, 23b en regard destinés à permettre le passage des deux leviers précités 14, 15, lesdits leviers 14, 15 étant en appui sur deux axes 30, 31 solidaires du cylindre intérieur 23 et coulissants à travers d'autres lumières 22c ménagées dans le cylindre extérieur 22. Un ensemble de rondelles élastiques 32 est interposé entre les deux cylindres 22, 23, en ayant été comprimé au montage entre les deux fonds 22a, 23a desdites pièces 22, 23. Cet ensemble mobile N est guidé en translation par l'intermédiaire de deux lumières 33a usinées respectivement dans deux flasques 33, 34 situés de part et d'autre du mécanisme M et lui servant de support.According to these embodiments, this vacuum switch D comprises a bulb 8 constituted mainly of a substantially cylindrical casing 8a containing two contacts respectively fixed and mobile 9, 10, the fixed contact 9 being electrically connected to the pad switching 12 previously mentioned, while the movable contact 10 is mounted sliding through one 8b of the bottoms of the envelope 8a while being connected to a mechanism actuation M. According to a first embodiment of the switch, described in Figures 7 and 8 this mechanism M comprises a cam 13 rotated by a shaft 21 coupled to the control shaft A of the driver bridge 4, said cam 13 acting on two levers 14, 15 mounted articulated by one of their ends 14a, 15a, about the same axis Y and of which the two opposite ends 14b, 15b form two arms in opposition cooperating with the cam 13. These two levers 14, 15 act on a movable assembly N connected to the contact mobile 10 of bulb 8. This mobile assembly N comprises two shaped parts substantially cylindrical 22, 23 respectively exterior and interior, provided with a bottom 22a, 23a, sliding one inside the other, said parts 22, 23 comprising orifices 22b, 23b facing each other intended to allow the passage of the two aforementioned levers 14, 15, said levers 14, 15 being supported on two axes 30, 31 integral with the inner cylinder 23 and sliding through other lights 22c formed in the outer cylinder 22. A set of elastic washers 32 is interposed between the two cylinders 22, 23, having been compressed during mounting between the two bottoms 22a, 23a of said parts 22, 23. This movable assembly N is guided in translation by means of two machined slots 33a respectively in two flanges 33, 34 located on either side of the mechanism M and it serving as a support.

Selon une seconde réalisation de cet interrupteur à vide, le mécanisme d'actionnement M de l'ampoule, tel qu'illustré sur la figure 9 comprend, un plot 40 solidaire du contact mobile 10 de l'ampoule 8, ledit plot 40 étant pourvu sur ses deux faces respectivement supérieure et inférieure 40a, 40b, d'un évidement de forme semi-sphérique destiné à loger l'une des extrémités des deux biellettes 41, 42, dont les deux extrémités opposées 41a, 42a sont maintenues par deux lames de contact flexibles 43, 44 montés en opposition. On notera que ces pièces sont de préférence réalisées en alliage de cuivre. Des lames formant ressort 45, 46 sont appliquées sur les lames de contact 43, 44 et maintiennent la pression des contacts flexibles 43, 44 sur les biellettes 41, 42 et sur le plot 40.According to a second embodiment of this vacuum switch, the actuation mechanism M of the bulb, as illustrated in FIG. 9 comprises, a stud 40 secured to the movable contact 10 of the bulb 8, said pad 40 being provided on its two respectively upper faces and lower 40a, 40b, of a semi-spherical recess intended to accommodate one of the ends of the two links 41, 42, the two opposite ends 41a, 42a of which are held by two flexible contact blades 43, 44 mounted in opposition. Note that these parts are preferably made of copper alloy. Blades forming a spring 45, 46 are applied to the contact blades 43, 44 and maintain the pressure of the contacts hoses 43, 44 on the rods 41, 42 and on the pad 40.

Sur les figures 10 à 14 on voit une autre réalisation d'un mécanisme d'actionnement M fonctionnant selon le même principe que celui de la figure 9 mais dont la structure diffère sensiblement de celle de cette figure. Sur cette figure, l'ensemble des constituants précités est logé dans un support 70 qui assure également la fonction de guidage du contact mobile 10, et du plot 40. Les deux biellettes 41, 42 comportent chacune une extrémité logée dans un logement semisphérique 60a prévu dans un support fixe 60 et une extrémité logée dans un évidement 63a, 64a prévu dans deux lames de contacts 63, 64 appartenant à une même pièce. Les biellettes 41, 42 sont maintenues élastiquement entre le support 60 et les lames de contact 63, 64 par les lames ressort 61, 62.Figures 10 to 14 show another embodiment of an actuating mechanism M operating according to the same principle as that of FIG. 9 but whose structure differs substantially like that of this figure. In this figure, all of the aforementioned constituents is housed in a support 70 which also performs the function of guiding the movable contact 10, and of the pad 40. The two links 41, 42 each have one end housed in a semispherical housing 60a provided in a fixed support 60 and one end housed in a recess 63a, 64a provided in two contact blades 63, 64 belonging to the same room. The links 41, 42 are held elastically between the support 60 and the blades contact 63, 64 by the spring blades 61, 62.

On décrira maintenant le fonctionnement des différentes réalisations de l'invention à l'aide des figures en commençant par celui de l'interrupteur décrit sur les figures 1 à 5.The operation of the various embodiments of the invention will now be described using of the figures starting with that of the switch described in Figures 1 to 5.

Sur la figure 1, l'interrupteur I est en position fermée. Dans cette position, les deux contacts mobiles 5a, 6a du sectionneur 4 sont positionnées respectivement sur les deux contacts fixes 1a et 2a et le doigt de commutation 7 est en contact avec le plot de commutation 12. L'ampoule à vide 8 est en position fermée, cependant, la partie principale du courant en provenance des câbles électriques C passe à travers le plot fixe 2, le pont conducteur 4, le plot fixe 11 et le plot 1 relié au jeu de barres B, sans passer par l'interrupteur à vide D. Sur la figure 2, le pont conducteur 4 ayant été entraíné dans le sens de l'ouverture de l'interrupteur I (voir flèche), le premier contact mobile Sa du pont 4 n'est plus en contact avec le premier contact fixe 1a, alors que le second contact mobile 6a est encore en contact avec le second contact fixe 2a grâce à sa plage de contact étendue. Dans cette position, le doigt de commutation 7 est toujours en contact avec le plot de commutation 12, de sorte que dès que le premier contact mobile 5a a quitté le premier contact fixe 1a, le courant passe par le doigt de commutation 7, le plot de commutation 12, l'ampoule à vide 8, jusqu'au plot fixe 1. Lorsque ce contact mobile 5a est à une distance suffisante du contact fixe 1a, pour qu'il n'y ait pas d'amorçage en cours de coupure, l'ampoule à vide 8 s'ouvre et interrompt le courant nominal. Puis le premier contact mobile Sa du pont 4 vient se superposer au doigt de commutation 7 et entraíne celui-ci vers la position ouverte, en même temps que le second contact mobile 6a quitte le second contact fixe 2a a afin d'obtenir le sectionnement (figure 3). Dans cette position le sectionneur 4 et l'ampoule 8 sont ouverts. Lors d'une manoeuvre de fermeture de l'interrupteur I, le pont conducteur 4 est entraíné dans le sens opposé au précédent. En cours de fermeture, lorsque le second contact mobile 6a entre en contact avec le contact fixe 2a, le premier contact mobile 5a, entraínant dans sa course le doigt de commutation 7, passe devant le plot de commutation 12 sans le toucher, alors que le doigt de commutation 7 entre en contact avec ce plot 12. A partir de ce moment, le doigt de commutation 7 est désolidarisé du contact mobile 5a qui continue sa course de rotation jusqu'au premier contact fixe 1a, tandis que le second contact mobile 6a glisse sur le second contact fixe 2a. Dès que le contact mobile Sa entre en contact avec le contact fixe 1a, l'ampoule à vide 8, restée ouverte jusqu'à cet instant, se ferme (figure 1). Pour une mise à la terre du sectionneur 4, les contacts mobiles 5a, 6a du pont 4 et le doigt 7 sont entraínés simultanément vers la position sectionneur de terre fermé, illustrée sur la figure 5, à partir de la position d'ouverture illustrée sur la figure 3. Dans cette position, ce sont les deux contacts mobiles 5a, 6a qui réalisent la fermeture, le doigt de commutation 7 ne jouant aucun rôle, tout comme l'ampoule à vide 8 qui reste ouverte. On notera que cette dernière peut se fermer, si pour des raisons de construction l'actionneur l'amène dans cet état, mais cela n'a aucune influence sur la fermeture sur court-circuit. Lors d'une ouverture du sectionneur de terre, les contacts mobiles 5a, 6a et le doigt de commutation 7 sont entraínés simultanément vers la position ouverte (voir figure 3). L'ampoule à vide 8 reste ouverte, ou bien si elle s'était fermé lors de la fermeture à la terre, elle s'ouvre de nouveau.In Figure 1, the switch I is in the closed position. In this position, the two movable contacts 5a, 6a of the disconnector 4 are positioned respectively on the two fixed contacts 1a and 2a and the switching finger 7 is in contact with the pad switching 12. The vacuum interrupter 8 is in the closed position, however, the main part current from the electric cables C passes through the fixed stud 2, the bridge conductor 4, the fixed block 11 and the block 1 connected to the busbar B, without passing through the vacuum switch D. In Figure 2, the driver bridge 4 having been driven in the direction when switch I opens (see arrow), the first movable contact Sa on deck 4 is not no longer in contact with the first fixed contact 1a, while the second movable contact 6a is still in contact with the second fixed contact 2a thanks to its extended contact range. In this position, the switching finger 7 is always in contact with the contact switching 12, so that as soon as the first mobile contact 5a has left the first fixed contact 1a, the current flows through the switching finger 7, the switching pad 12, the vacuum interrupter 8, to the fixed pad 1. When this movable contact 5a is at a distance sufficient of the fixed contact 1a, so that there is no priming during cutting, the vacuum interrupter 8 opens and interrupts the nominal current. Then the first mobile contact Its bridge 4 is superimposed on the switching finger 7 and drives it towards the open position, at the same time as the second movable contact 6a leaves the second contact fixed 2a a in order to obtain the sectioning (FIG. 3). In this position the disconnector 4 and the bulb 8 are open. During a closing operation of switch I, the bridge driver 4 is driven in the opposite direction to the previous one. In the process of closing, when the second movable contact 6a comes into contact with the fixed contact 2a, the first contact mobile 5a, driving the switching finger 7 in its course, passes in front of the stud switching 12 without touching it, while switching finger 7 comes into contact with this pad 12. From this moment, the switching finger 7 is detached from the contact mobile 5a which continues its rotational travel until the first fixed contact 1a, while the second movable contact 6a slides on the second fixed contact 2a. As soon as the mobile contact Sa comes into contact with the fixed contact 1a, the vacuum interrupter 8, which remains open until instant, closes (figure 1). For earthing disconnector 4, the movable contacts 5a, 6a of the bridge 4 and the finger 7 are driven simultaneously to the disconnector position of closed ground, illustrated in figure 5, from the open position illustrated in figure 3. In this position, it is the two movable contacts 5a, 6a which carry out the closing, the switching finger 7 plays no role, just like the vacuum bulb 8 which remains opened. Note that the latter can close, if for construction reasons the actuator brings it to this state, but this has no influence on the closing on short circuit. When the earthing switch opens, the movable contacts 5a, 6a and the switching finger 7 are driven simultaneously to the open position (see figure 3). The vacuum interrupter 8 remains open, or else if it had closed when closed at the earth, it opens again.

On décrira ci-après le fonctionnement de la seconde réalisation de l'interrupteur en référence à la figure 6. Comme dans la réalisation précédente, l'interrupteur I est fermé lorsque le pont conducteur 4 relie les premier et second contacts fixes 1a, 2a, tel qu'illustré en A, l'ampoule à vide 8 restant fermée, le courant principal circulant du premier contact fixe 1a relié aux câbles C, à travers le pont 4 et le second contact 2a relié au jeu de barres B. Lors d'une manoeuvre d'ouverture, le pont conducteur 4 est entraíné suivant le sens de la flèche et entraíne dans sa course le doigt de commutation 16 qui se trouvait en position D, jusqu'à une position E. Dès que le premier contact mobile 5a se trouve à une certaine distance du contact fixe 1a, pour qu'il n'y ait pas d'amorçage en cours de coupure, l'ampoule à vide 8 s'ouvre et interrompt le courant nominal. Lorsque le contact mobile 5a arrive en position B et le doigt de commutation 16 en position E, le doigt 16 se désolidarise du contact mobile 5a et est ramené par l'intermédiaire d'un système de rappel en contact avec le premier contact fixe 1a. Le contact mobile 5a continue alors sa course jusqu'à la position ouverte représentée en C pour obtenir le sectionnement. Lors d'une manoeuvre de fermeture, les contacts mobiles 5a, 6a du pont 4 tournent dans le sens de fermeture jusqu'à la position A. Lorsque le contact mobile Sa du pont 4 passe au niveau du doigt de commutation 16, un accrochage du contact Sa sur le doigt 16 est réalisé, du genre à cliquet, permettant un nouvel entraínement du doigt 16 lors d'une nouvelle manoeuvre d'ouverture. Dès que le contact mobile 5a atteint le contact fixe 1a, l'ampoule à vide 8 se ferme. The operation of the second embodiment of the switch will be described below. reference to FIG. 6. As in the previous embodiment, the switch I is closed when the conductive bridge 4 connects the first and second fixed contacts 1a, 2a, as illustrated at A, the vacuum interrupter 8 remaining closed, the main current flowing from the first contact fixed 1a connected to cables C, through bridge 4 and second contact 2a connected to busbar B. During an opening operation, the driver bridge 4 is driven in the direction of the arrow and drives in its travel the switching finger 16 which was in position D, to a position E. As soon as the first movable contact 5a is at a certain distance from fixed contact 1a, so that there is no priming during cutting, the vacuum interrupter 8 opens and interrupts the nominal current. When the moving contact 5a arrives in position B and the switching finger 16 in position E, the finger 16 disengages of the movable contact 5a and is brought back via a contact reminder system with the first fixed contact 1a. The movable contact 5a then continues its course until the open position shown in C to obtain sectioning. During a maneuver by closing, the movable contacts 5a, 6a of the bridge 4 rotate in the closing direction until position A. When the movable contact Sa of bridge 4 passes at the finger of switching 16, the Sa contact on the finger 16 is hooked, of the ratchet type, allowing a new drive of the finger 16 during a new opening maneuver. As soon as the movable contact 5a reaches the fixed contact 1a, the vacuum interrupter 8 closes.

L'opération de fermeture du sectionneur de terre est réalisée lorsque le pont conducteur 4 relie le plot 3 relié à la terre, au contact fixe 1a relié aux câbles présentant comme le second contact fixe 2a, une plage de contact étendue 1c.The closing operation of the earthing switch is carried out when the driver bridge 4 connects the stud 3 connected to earth, to the fixed contact 1a connected to the cables presenting as the second fixed contact 2a, an extended contact range 1c.

On notera que bien que les figures 1 à 6 ont été décrites comme illustrant un interrupteur intégrant une ampoule à vide conçue pour assurer la coupure du courant nominal, ces figures peuvent également être considérées comme décrivant un disjoncteur dans lequel l'ampoule à vide est conçue pour assurer la coupure d'un courant de court-circuit.Note that although Figures 1 to 6 have been described as illustrating a switch incorporating a vacuum interrupter designed to cut off the nominal current, these figures can also be considered to describe a circuit breaker in which the vacuum interrupter is designed to cut off a short-circuit current.

On voit donc que dans ces deux réalisations différentes de l'interrupteur, la fermeture sur courant nominal ou courant de court-circuit, est réalisée par les contacts du sectionneur.We therefore see that in these two different embodiments of the switch, the closure on nominal current or short-circuit current, is made by the contacts of the disconnector.

On décrira maintenant le fonctionnement du mécanisme d'actionnement M d'un interrupteur à vide D en référence aux figures 7 et 8. Une première rotation dans le sens horaire de la came 13 engendre une rotation dans le même sens du levier 15 qui entraíne l'axe inférieur 31 vers le bas, l'autre levier 14 n'étant pas sollicité.We will now describe the operation of the actuation mechanism M of a switch unladen D with reference to Figures 7 and 8. A first clockwise rotation of the cam 13 generates a rotation in the same direction of the lever 15 which drives the lower axis 31 downwards, the other lever 14 not being pressed.

L'axe inférieur 31 entraíne le cylindre intérieur 23 vers la bas, lequel par l'intermédiaire des rondelles élastiques 32, entraíne le contact mobile 10 et le cylindre extérieur 22.The lower axis 31 drives the inner cylinder 23 downward, which via elastic washers 32, drives the movable contact 10 and the outer cylinder 22.

Lorsque le contact mobile 10 arrive en contact avec le contact fixe 9 de l'ampoule à vide 8, il ne peut plus se déplacer davantage. A partir de cette position des contacts, la came 13 engendre une compression des rondelles élastiques 32 pour assurer la pression de contact. Pendant cette compression des rondelles élastiques 32, le cylindre intérieur 23 coulisse dans le cylindre extérieur 22.When the movable contact 10 comes into contact with the fixed contact 9 of the vacuum interrupter 8, he cannot move any more. From this position of the contacts, the cam 13 generates compression of the elastic washers 32 to ensure the contact pressure. During this compression of the elastic washers 32, the inner cylinder 23 slides in the outer cylinder 22.

La rotation dans le sens opposé au précédent de la came 13 engendre une rotation dans le même sens du levier 14 qui entraíne l'axe supérieur 30 vers le haut. Il s'en suit tout d'abord une décompression des rondelles élastiques 32, puis quand l'axe supérieur 30 arrive en butée sur la partie haute de la lumière 22c, il entraíne simultanément les cylindres intérieur et extérieur 22, 23. Le contact mobile 10 étant solidaire du cylindre extérieur 22 est lui-même entraíné jusqu'à la position "ampoule ouverte". Ce mécanisme M peut transmettre aux contacts des efforts importants en ne nécessitant qu'un angle de rotation faible. En outre la direction de la force transmise est toujours coaxiale avec l'axe du contact mobile.The rotation in the opposite direction to the previous one of the cam 13 generates a rotation in the same direction of the lever 14 which drives the upper axis 30 upwards. It follows first a decompression of the elastic washers 32, then when the upper axis 30 arrives in stop on the upper part of the light 22c, it simultaneously drives the inner cylinders and outer 22, 23. The movable contact 10 being integral with the outer cylinder 22 is itself driven to the "open bulb" position. This mechanism M can transmit at contact with large forces, requiring only a small angle of rotation. In addition the direction of the transmitted force is always coaxial with the axis of the movable contact.

On décrira ci-après le fonctionnement des mécanismes décrits sur les figures 9 à 14. The operation of the mechanisms described in FIGS. 9 to 14 will be described below.

En se reportant plus particulièrement à la figure 9, on voit que le déplacement du plot 40 entraíne le déplacement des biellettes 41,42, des lames de contact 43,44, des lames ressorts 45,46, et du contact mobile 10 jusqu'à la position représentée en pointillés.Referring more particularly to FIG. 9, it can be seen that the displacement of the pad 40 causes the displacement of the rods 41,42, the contact blades 43,44, the leaf springs 45,46, and of the movable contact 10 to the position shown in dotted lines.

De même en se reportant plus particulièrement aux figures 10 à 14, on voit que le déplacement de l'ergot 51 solidaire du plot 40 s'effectue par le biais de la manivelle 50 comprenant la lumière 52 autorisant une course morte de cette manivelle 50 avant d'actionner l'ergot 51, ladite course morte permettant de séquencer l'ouverture et la fermeture de l'ampoule 8 par rapport à celles du sectionneur.Similarly, with particular reference to FIGS. 10 to 14, it can be seen that the displacement of the lug 51 integral with the stud 40 is effected by means of the crank 50 comprising the light 52 authorizing a dead stroke of this crank 50 before actuate the lug 51, said dead stroke making it possible to sequence the opening and the bulb 8 closed relative to those of the disconnector.

Ce déplacement de l'ergot entraínera un déplacement des lames de contacts 63, 64 et lames de ressorts 61, 62 (position représentée en pointillés) et un pivotement, avec passage de point mort, des biellettes 41, 42. Ceci est illustré en particulier sur les figures 13 et 14 qui illustrent le mécanisme dans deux positions correspondant respectivement à une position d'ouverture des contacts 9, 10 de l'ampoule 8 et une position de fermeture desdits contacts.This movement of the lug will cause a displacement of the contact blades 63, 64 and blades springs 61, 62 (position shown in dotted lines) and a pivot, with passage of neutral, rods 41, 42. This is illustrated in particular in FIGS. 13 and 14 which illustrate the mechanism in two positions corresponding respectively to a position opening of the contacts 9, 10 of the bulb 8 and a closed position of said contacts.

On notera que dans la position fermée, la pression sur les contacts sera auto-maintenue. Cet ensemble constitue un dispositif à passage de point mort où les positions extrêmes A et B sont stables, et ou la pression de fermeture du contact mobile sur le contact fixe est indépendante du mécanisme d'entraínement. Ce mécanisme permet en outre le passage du courant.Note that in the closed position, the pressure on the contacts will be self-sustaining. This together constitutes a neutral passage device where the extreme positions A and B are stable, and where the closing pressure of the movable contact on the fixed contact is independent of the drive mechanism. This mechanism also allows the passage of the current.

On remarquera également que la forme de contacts souples pourra être aménagée de façon à engendrer une attraction entre lesdits contacts, en fonction de l'intensité qui les traverse, ceci afin de provoquer un effort antagoniste à l'effort de répulsion des contacts de l'ampoule.It will also be noted that the form of flexible contacts could be arranged so as to generate an attraction between said contacts, as a function of the intensity which passes through them, this in order to provoke an effort antagonistic to the repulsion effort of the contacts of the bulb.

On a donc réalisé grâce à l'invention un interrupteur ou un disjoncteur électrique moyenne tension permettant de supprimer les contraintes de conception liées au passage du courant nominal et à l'opération de fermeture sur l'organe de coupure.Thanks to the invention, therefore, an average electric switch or circuit breaker has been produced. voltage to eliminate design constraints related to current flow nominal and to the closing operation on the breaking device.

Les conceptions spécifiques d'une part, du contact mobile et tout particulièrement du doigt de commutation, et d'autre part du mécanisme d'actionnement de l'organe de coupure permettent d'obtenir un interrupteur à trois positions, particulièrement compact répondant à cet objectif.Specific conceptions on the one hand, mobile contact and especially the finger switching, and secondly the actuating mechanism of the cut-off member enable a particularly compact three-position switch to meet this goal.

L'invention a donc permis de résoudre le problème de l'incorporation de l'organe de coupure dans la seule manoeuvre d'ouverture (coupure) qui engendre une séquence de fonctionnement particulière, la réalisation de cette séquence étant rendue complexe à cause des écarts importants des caractéristiques de course des appareils manoeuvrant dans un gaz isolant à pression atmosphérique par rapport aux appareils opérant dans le vide.The invention has therefore made it possible to solve the problem of incorporating the cut in the only opening maneuver (cut) which generates a sequence of particular functioning, the realization of this sequence being made complex because significant deviations from the stroke characteristics of gas-operated devices insulating at atmospheric pressure compared to devices operating in a vacuum.

Bien entendu, l'invention n'est pas limitée aux modes de réalisation décrits et illustrés qui n'ont été donnés qu'à titre d'exemple. Au contraire, l'invention comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci sont effectuées suivant son esprit.Of course, the invention is not limited to the embodiments described and illustrated which have been given by way of example only. On the contrary, the invention includes all technical equivalents of the means described as well as their combinations if these are carried out according to his spirit.

Claims (21)

  1. A medium voltage multipole electrical switch of the kind comprising an enclosure (E) filled with an isolating gas and housing per pole, a first and second stationary contact situated along the internal wall of the enclosure and connected respectively to an input terminal and an output terminal, said stationary contacts operating in conjunction respectively with a first and second movable contact supported by a conducting bridge (4) movable in rotation driven by an operating mechanism to make or break the electrical circuit between the first and second connection terminal,
    characterized in that it comprises in addition :
    a vacuum cartridge (8) containing a stationary contact (9) and a movable contact (10) moved in translation by an actuating mechanism (M) coupled to the above-mentioned operating mechanism, one (10) of the contacts of the cartridge, called the first arcing contact, being electrically connected to the first stationary contact (1a) of the switch (I),
    switching means electrically and temporarily connecting the other (9) of the contacts of the cartridge, called the second arcing contact, to the conducting bridge (4),
    and sequencing means designed to establish the opening and closing sequences of the movable contacts of the switch (I) and of the cartridge (8) operating in conjunction with the above-mentioned switching means (7, 12, 16) in such a way that in the closed position, the contacts (9, 10) of the cartridge (8) are closed and the second contact of the cartridge (8) is electrically connected to the conducting bridge (4), that when an opening operation of the switch takes place, the arc associated to the first stationary and movable contacts (1a and 5a) of the switch switches through the cartridge (8), that after a certain degree of opening the arcing contacts (9, 10) of the cartridge (8) open so as to perform breaking of the electrical circuit, and that during the closing operation of the switch (I), the contacts (9, 10) of the cartridge (8) only close after closing of the first and second stationary and movable contacts of the switch (I) has taken place.
  2. The switch according to claim 1, characterized in that the switching means (7, 12, 16) comprise a switching stud (12) electrically connected to the second contact (9) of the cartridge (8) and a switching finger (7, 16) one of the ends (7a, 16a) of which is articulated around an axis appreciably parallel or concurrent to the axis (X) of rotation of the conducting bridge (4), said finger (7, 16) electrically connecting the bridge (4) to the above-mentioned stud (12) during switching of the arc and breaking of the circuit.
  3. The switch according to claim 2, characterized in that one (7a) of the ends of the switching finger (7) is connected in articulated manner and electrically to the bridge (4), at an intermediate point of the latter, whereas its other end (7b) is able to come into and remain in contact with the switching stud (12) during switching and breaking of the current.
  4. The switch according to claim 2, characterized in that the conducting bridge (4) comprises means for driving the finger (7) in rotation, during opening of the switch, after switching and breaking of the circuit, and when closing of the switch takes place up to the time when the first movable contact (5a) of the bridge (4) passes in front of the switching stud (12) prior to full closing of the switch.
  5. The switch according to claim 1 or 2, characterized in that the switching finger (16) is connected in articulated manner and electrically via one of its ends (16a) to the switching stud (12), whereas its other end (16b) operates in conjunction with the first movable contact (5a) of the bridge (4).
  6. The switch according to claim 5, characterized in that it comprises means for automatic return of the finger (16) to the contact position with the first stationary contact (1a) of the switch (I), and means for temporary latching of the finger (16) on the first movable contact (5a) of the bridge (4).
  7. The switch according to any one of the foregoing claims, characterized in that one of the stationary contacts (1a or 2a) of the switch is electrically connected to electrical cables (C), whereas the other stationary contact (2a or 1a) is electrically connected to a busbar (B).
  8. The switch according to any one of the foregoing claims, characterized in that it comprises in addition a fourth stationary contact (3a) connected to the earth (T) able to be electrically connected by the conducting bridge (4) to the stationary contact (1a or 2a) connected to the electrical cables (C).
  9. The switch according to any one of the foregoing claims, characterized in that the above-mentioned sequencing means comprise a larger fixed pad (2c) provided on the above-mentioned second stationary contact (2a) and a small fixed pad (1c) provided on the first stationary contact (1a).
  10. The switch according to any one of the claims 1 to 8, characterized in that the above-mentioned sequencing means comprise two larger fixed pads (1c, 2c) provided respectively on the two stationary contacts (1a, 2a).
  11. The switch according to any one of the foregoing claims, characterized in that the operating mechanism (M) of the movable arcing contact (10) of the cartridge (8) comprises a cam (13) driven in rotation by a shaft (21) coupled to the operating mechanism (A) of the conducting bridge (4), said cam (13) acting on two levers (14, 15) articulated via one of their ends (14a, 15a) around one and the same axis (Y), said levers (14, 15) acting on an assembly (N) mounted sliding in a support (33, 34) and securedly affixed to the movable contact (10) of the cartridge (8), the profile of the cam (13) defining the opening and closing sequences of the contacts (9, 10) of the cartridge (8).
  12. The switch according to claim 11, characterized in that the movable assembly (N) comprises two cylinders (22, 23) comprising a base (22a, 23a), said cylinders (22, 23) sliding inside one another and comprising apertures (22b, 23b) facing one another designed for two levers (14, 15) to pass between two spindles (30, 31) secured to the internal cylinder (23) on which said levers (14, 15) bear, said spindles (30, 31) being mounted sliding via their ends in apertures (22c) arranged on the one hand in the external cylinder (22) and on the other hand in two flanges (33, 34) belonging to the support of the mechanism (M), flexible washers (32) being compressed on assembly between the base (23a) of the internal cylinder (23) and the base (22a) of the external cylinder (22), said external cylinder (22) supporting the movable contact (10) of the cartridge (8).
  13. The switch according to any one of the claims 1 to 10, characterized in that the actuating mechanism (M) comprises a stud (40) securedly affixed to the movable arcing contact (10) and actuated by a drive mechanism (50) operating in conjunction with a dead point passage system comprising two rods (41, 42), each of the rods comprising one end housed in articulated manner in a semi-spherical housing (40a, 40b, 63a, 64a) belonging to a first part (40, 63, 64)securedly affixed in translation to the movable arcing contact (10) and one end housed in articulated manner in a housing (43a, 44a, 60a) which is also semi-spherical belonging to a second fixed part (43, 44, 60), said rods (41, 42) being held flexibly between these two parts (40, 43, 44 and 60, 63, 64) so as to be able to pivot around the axis of the semi-spherical housing provided in the fixed part (43) when movement of the movable contact (10) takes place.
  14. The switch according to claim 13, characterized in that the two rods (41, 42) are housed in articulated manner, via one of their ends, in two semi-spherical recesses (40a, 40b) provided respectively in two opposite walls of the stud (40), and via their opposite end in two semi-spherical recesses (43a, 44a) provided in two contact blades (43, 44) mounted in opposition, on which spring blades (45, 46) are applied, the contact blades and spring blades being fixed with respect to the movable contact.
  15. The switch according to claim 13, characterized in that the rods (41, 42) are housed in articulated manner, via one of their ends, in two semi-spherical recesses (60a) provided in a fixed support (60) and via their opposite end in two semi-spherical recesses (63a, 64a) provided respectively in two contact blades (63, 64) mounted in opposition and fixed on the latter.
  16. A vacuum cartridge switch designed in particular to perform breaking in a switch, of the kind comprising an appreciably cylindrical enclosure closed by two bases containing a stationary arcing contact and a movable arcing contact moved in translation by an actuating mechanism, characterized in that the actuating mechanism (M) comprises a cam (13) driven in rotation by a shaft (21), said cam (13) acting on two levers (14, 15) articulated via one of their ends (14a, 15a) around one and the same axis (Y), said levers (14, 15) acting on an assembly (N) mounted sliding in a support (33, 34) and supporting the movable contact (10) of the cartridge (8), the profile of the cam (13) defining the opening and closing sequences of the contacts (9, 10) of the cartridge (8).
  17. The switch according to claim 16, characterized in that the movable assembly (N) comprises two cylinders (22, 23) comprising a base (22a, 23a), said cylinders (22, 23) sliding inside one another and comprising apertures (22b, 23b) facing one another designed for two levers (14, 15) to pass between two spindles (30, 31) secured to the internal cylinder (23) on which said levers bear, said spindles (30, 31) being mounted sliding via their ends in apertures (33a) arranged on the one hand in the external cylinder (22) and on the other hand in two flanges (33, 34) belonging to the support of the mechanism (M), flexible washers (32) being compressed on assembly between the base (23a) of the internal cylinder (23) and the base (22a) of the external cylinder (22), said external cylinder (22) supporting the movable arcing contact (10) of the cartridge (8).
  18. A vacuum cartridge switch of the kind comprising an enclosure of appreciably cylindrical shape closed by two bases and containing a stationary arcing contact and a movable arcing contact moved in translation by an actuating mechanism, characterized in that the above-mentioned mechanism comprises a stud (40) securedly affixed to the movable contact (10) and actuated by a drive mechanism (50) operating in conjunction with a dead point passage system comprising two rods (41, 42), each of the rods comprising one end housed in articulated manner in a semi-spherical housing (40a, 40b, 63a, 64a) belonging to a first part (40, 63, 64) securedly affixed in translation to the movable arcing contact (10) and one end housed in articulated manner in a housing (43a, 44a, 60a) which is also semi-spherical belonging to a second fixed part (43, 44, 60), said rods (41, 42) being held flexibly between these two parts (40, 43, 44 and 60, 63, 64) so as to be able to pivot around the axis of the housing (43a, 44a, 60a) provided in the fixed part (43) when movement of the movable arcing contact (10) takes place.
  19. The switch according to claim 8, characterized in that the two rods (41, 42) are housed in articulated manner, via one of their ends, in two semi-spherical recesses (40a, 40b) provided respectively in two opposite walls of the stud (40), and via their opposite end in two semi-spherical recesses (43a, 44a) provided in two contact blades (43, 44) mounted in opposition, on which spring blades (45, 46) are applied, the contact blades and spring blades being fixed with respect to the movable contact.
  20. The switch according to claim 16, characterized in that the rods (41, 42) are housed in articulated manner, via one of their ends, in two semi-spherical recesses (60a) provided in a fixed support (60) and via their opposite end in two semi-spherical recesses (63a, 64a) provided respectively in two contact blades (63, 64) mounted in opposition and fixed on the latter.
  21. The switch according to any one of the claims 18 to 20, characterized in that the above-mentioned stud (40) is actuated by a crank (50) comprising an aperture (52) in which a spigot (51) securedly affixed to the stud (40) slides, said aperture (52) enabling the opening and closing sequences of the contacts of the cartridge to be defined.
EP19950410067 1994-07-20 1995-07-04 M.T. electrical switches Expired - Lifetime EP0693763B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9409198A FR2722912B1 (en) 1994-07-20 1994-07-20 MEDIUM VOLTAGE ELECTRIC SWITCHES
FR9409198 1994-07-20

Publications (2)

Publication Number Publication Date
EP0693763A1 EP0693763A1 (en) 1996-01-24
EP0693763B1 true EP0693763B1 (en) 2000-04-26

Family

ID=9465727

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950410067 Expired - Lifetime EP0693763B1 (en) 1994-07-20 1995-07-04 M.T. electrical switches

Country Status (3)

Country Link
EP (1) EP0693763B1 (en)
DE (1) DE69516461T2 (en)
FR (1) FR2722912B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014001029A1 (en) 2012-06-25 2014-01-03 Siemens Aktiengesellschaft Three-position load isolating switch for medium-voltage switchgear assemblies
DE102013217834A1 (en) * 2013-09-06 2015-03-12 Siemens Aktiengesellschaft SF6-free switching device

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2212747B1 (en) * 2003-01-14 2005-06-01 Grupo Ormazabal, S.A. TRANSFORMATION CENTER FOR SELF-PROTECTED TRANSFORMER.
DE102006008933B4 (en) * 2006-02-22 2009-06-18 Siemens Ag Electrical switching device
WO2011147717A1 (en) * 2010-05-25 2011-12-01 Siemens Aktiengesellschaft Switch disconnector
DE202010009448U1 (en) * 2010-06-23 2010-09-09 Ipt International Power & Technology Gmbh High voltage switching device
DE102012200962B4 (en) * 2012-01-24 2018-07-26 Siemens Aktiengesellschaft Switchgear, in particular switch disconnector, for medium-voltage switchgear
EP3046129B1 (en) * 2015-01-15 2019-09-11 Schneider Electric Industries SAS Shunt breaking system
CN105990068B (en) * 2015-02-10 2019-10-18 施耐德电器工业公司 Shunt open-circuit system
DE102018109750B4 (en) * 2018-04-23 2023-11-23 Fritz Driescher KG Spezialfabrik für Elektrizitätswerksbedarf GmbH & Co. Switching device
WO2020200864A1 (en) * 2019-03-29 2020-10-08 Siemens Aktiengesellschaft Optimised three-position switch
EP4276871A1 (en) * 2022-05-12 2023-11-15 ABB Schweiz AG A method for assembling a switching apparatus for medium voltage electric systems

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1126362A (en) * 1965-07-06 1968-09-05 Ass Elect Ind Improvements in and relating to electric circuit breakers
GB1156919A (en) * 1965-12-23 1969-07-02 Ass Elect Ind Improvements in and relating to Circuit Breakers
FR2655766B1 (en) 1989-12-11 1993-09-03 Merlin Gerin MEDIUM VOLTAGE HYBRID CIRCUIT BREAKER.
FR2668851B1 (en) 1990-11-06 1994-10-07 Merlin Gerin MULTIPOLAR ROTARY SWITCH.
FR2682807B1 (en) * 1991-10-17 1997-01-24 Merlin Gerin ELECTRIC CIRCUIT BREAKER WITH TWO VACUUM CARTRIDGES IN SERIES.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014001029A1 (en) 2012-06-25 2014-01-03 Siemens Aktiengesellschaft Three-position load isolating switch for medium-voltage switchgear assemblies
DE102013217834A1 (en) * 2013-09-06 2015-03-12 Siemens Aktiengesellschaft SF6-free switching device
DE102013217834B4 (en) 2013-09-06 2022-01-20 Siemens Aktiengesellschaft Switching device and method for switching such a switching device

Also Published As

Publication number Publication date
FR2722912B1 (en) 1996-09-13
DE69516461T2 (en) 2000-10-12
FR2722912A1 (en) 1996-01-26
EP0693763A1 (en) 1996-01-24
DE69516461D1 (en) 2000-05-31

Similar Documents

Publication Publication Date Title
EP0517620B1 (en) M.T. circuit breaker with reduced control energy
EP0847586B1 (en) High voltage hybrid circuit-breaker
EP0680063B1 (en) Medium voltage electric switch
CA2526344C (en) Kinematic drive in a hybrid circuit breaker
EP0693763B1 (en) M.T. electrical switches
EP1271590A1 (en) Hybrid circuit breaker for middle or high voltage with vacuum and gas
WO1999067800A1 (en) Low voltage multipole circuit breaker with high electrodynamic resistance, whereof the pole shaft is arranged in the compartment housing the poles
EP1870916A1 (en) Cylindrical slot guide activation of an alternator load-break switch
CH674104A5 (en)
EP0599742B1 (en) Off-and-on mechanism for an electric medium-high or high voltage circuit breaker
EP0058585A1 (en) Operating mechanism for electrical switching apparatuses with three separate positions
FR2790592A1 (en) HIGH VOLTAGE CIRCUIT BREAKER WITH DOUBLE MOTION
WO2010043604A1 (en) Electric switching apparatus provided with two switches, such as a busbar sectionalising switch and an earthing switch, and including a driving means common to the mobile contacts of the switches
EP2575155B1 (en) Medium-voltage electric distribution apparatus
EP2037470B1 (en) Activation of an alternator load-break switch by a group of one main shaft and several secondary shafts
EP0053524A1 (en) Self blast electrical circuit breaker with rotating arc
FR2744284A1 (en) Multiple phase voltage switch mechanism for medium voltage circuit breakers
EP1402549A1 (en) Electrical cutoff and sectioning equipment comprising a vacuum bulb
EP0731481B1 (en) Load break disconnecting switch auto-locked in a closed position of the extinguishing chambers
EP0689217A1 (en) Vacuum tube, especially for circuit breaker or h.t. electrical switch, and switch incorporating such a tube
CA2281971C (en) Switch control equipped with a long-duration resistance insertion system
EP0785562A1 (en) Circuit breaker having contacts with double movement
EP0750328B1 (en) Load break switch
EP0403329A1 (en) Circuit breaker with automatic tripping, particularly protective switch and fault-current protective switch
FR2675944A1 (en) Exterior cut off device for an electrical line

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB NL

17P Request for examination filed

Effective date: 19960723

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19990624

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SCHNEIDER ELECTRIC INDUSTRIES SA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SCHNEIDER ELECTRIC INDUSTRIES SA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB NL

REF Corresponds to:

Ref document number: 69516461

Country of ref document: DE

Date of ref document: 20000531

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20000530

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20020703

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20020730

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040201

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20030704

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20040201

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20040709

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060201