EP2650891B1 - Control device for a medium-voltage electric protection apparatus comprising an interlock device and electric protection apparatus comprising same - Google Patents

Control device for a medium-voltage electric protection apparatus comprising an interlock device and electric protection apparatus comprising same Download PDF

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Publication number
EP2650891B1
EP2650891B1 EP13305105.2A EP13305105A EP2650891B1 EP 2650891 B1 EP2650891 B1 EP 2650891B1 EP 13305105 A EP13305105 A EP 13305105A EP 2650891 B1 EP2650891 B1 EP 2650891B1
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EP
European Patent Office
Prior art keywords
shaft
aforementioned
lever
control device
selector
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.)
Active
Application number
EP13305105.2A
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German (de)
French (fr)
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EP2650891A1 (en
Inventor
Yves Belin
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication of EP2650891A1 publication Critical patent/EP2650891A1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/001—Means for preventing or breaking contact-welding
    • 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
    • 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
    • H01H31/02—Details
    • H01H31/04—Interlocking mechanisms
    • H01H31/08—Interlocking mechanisms for interlocking two or more parts of the mechanism for operating contacts
    • 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
    • H01H31/02—Details
    • H01H31/04—Interlocking mechanisms
    • H01H31/10—Interlocking mechanisms for interlocking two or more 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
    • H01H33/46—Interlocking mechanisms
    • H01H33/52—Interlocking mechanisms for interlocking two or more 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
    • H01H33/60—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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H2009/288—Provisions relating to welded contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/24—Interlocking, locking, or latching mechanisms for interlocking two or more parts of the mechanism for operating contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches

Definitions

  • the present invention relates to a control device of an electrical protection device intended to be interposed between two parts of an electrical circuit so as to ensure at least the functions respectively of current flow between the parts, of interruption of the current between the parts, and of grounding of one of the parts of the circuit, said apparatus comprising an apparatus of breaking in series with an apparatus of grounding, said device of control comprising a tree said primary shaft, of maneuver of the contact control shaft of the cutoff device said secondary shaft, said primary shaft being adapted to be operated by a user, and an operating shaft of the grounding shaft, also operable by a user.
  • Electrical protection devices comprising a signaling light of a soldered state of the contacts.
  • the object of the present invention is to propose a device for controlling an electrical protection device comprising an interlocking device, of simple design, preventing the earthing of a part of the circuit, of locking the selector of the interferers. locks in the earth position or lock the control device in the open position, if the contact (s) of the switchgear is (are) welded (s).
  • the subject of the present invention is a control device for an electrical protection device, this device being characterized in that comprises an interlocking device between said two said primary and secondary shafts, said interlocking device being able to prohibit the earthing of one of the parts of the circuit when the apparatus is in the closed position, and cooperating with locking means controlled by the aforementioned secondary shaft to prohibit the grounding of the circuit when the contacts of the switchgear are welded.
  • the contacts are considered welded, if the secondary shaft has not achieved at least 70% of its total opening stroke.
  • the aforementioned interlocking device comprises a position selector movable between a first position in which it allows access to the access port to the operating shaft of the setting shaft. earth, and a second position in which it prohibits this access, and in that the aforementioned locking means cooperate with the interlocking device mentioned above, to prevent the passage of the aforementioned selector of the second to the aforementioned first position if the contacts of the device are soldered.
  • this device comprises a lock adapted to lock the selector in the aforementioned first position and / or lock the control device in the open position, preventing access to the so-called primary shaft, if the contacts of the device are soldered.
  • the cut-off apparatus has a vacuum breaking technology.
  • the aforementioned locking means are controlled by a position indicator integral with the aforementioned secondary shaft and giving the position of the contacts of the breaking apparatus to the aforementioned locking means.
  • the aforementioned interlocking device comprises a first interlocking lever freely rotatably mounted around the aforementioned secondary shaft and having a first flap capable of releasing or closing the access orifice to the shaft. operating said primary shaft, a second lever rotatably mounted about a fixed axis relative to the support of the apparatus and having a said second flap adapted to close or release the access port to the operating shaft of the grounding shaft, said first and second levers being mechanically connected, and the above-mentioned position selection selector.
  • the aforementioned position indicator comprises a stud adapted to cooperate with the first interlocking lever to prevent the movement of the selector to the first position when the apparatus is in the closed position.
  • the aforementioned locking means comprise a latch pivotally mounted relative to a fixed axis of the support and biased by a spring towards the so-called secondary shaft, said latch cooperating with a feeler portion of the indicator giving the position of the contacts and with means provided on the first lever so as to allow or prevent the rotational drive of the first lever via the operating member of the selector.
  • these means provided on the first lever mainly consist in that from the closed position to an open position of the contacts corresponding to at least 70% of the opening stroke in rotation of the so-called secondary shaft, the shapes between the latch and the lever interfering to prevent the rotation of the first lever so as to prevent the operation of the selector, and between this last open position and the open position at 100% of the contacts, the shapes between the latch and the lever no longer interfer and allow the rotation of the lever and thus the operation of the selector.
  • the first interlocking lever comprises a first arm comprising the shutter of the access opening to the said primary shaft, and a second arm having a bent portion, and in that the two successive portions of this bent portion cooperate with the end portion of the lock so that in the closed position of the device, the lock is biased towards the secondary shaft and that the effort of the first lever on the lock by through its first bent part portion, locks the selector in position so as to prevent its movement towards the first position, and in that when the contacts are open in a rotation stroke of at least 70%, the part protruding from the indicator moves the lock so as to allow the movement of the first lever, this displacement allowing the displacement of the selector to the first position, and in that in the open position of the prod uit and actuated selector, the second bent portion exerts a force on the side portion of the lock adapted to allow the movement of the selector.
  • the aforementioned lock comprises a cam adapted to be rotated by means of a key, said cam being adapted to cooperate with a return portion secured to said first interlocking lever so as to lock said first lever in the closed position of the access opening to the said primary shaft and / or to lock the selector in the aforementioned first position, this cooperation between the cam and the return part in order to perform the aforementioned padlocking n ' it being possible that after a certain rotational stroke of the cam made possible by a corresponding rotational stroke of the lever return, which rotational stroke of the lever return can be obtained only when the contacts are not welded.
  • a rotational stroke of the cam for lockout is about 90 °.
  • the switching device also performs the disconnector function.
  • the breaking device is a circuit breaker or a switch.
  • the present invention further relates to an electrical protection apparatus having the aforementioned features taken alone or in combination.
  • This cell comprises a circuit breaker 1 (or switch) preferably with a vacuum breaking technology, such as for example a vacuum interrupter, said circuit-breaker preferably also performing the disconnector function and, in series with said circuit breaker, a switching device.
  • the earth 2 having a selector S at at least two positions respectively a current passage position that does not allow earthing of one of the circuit parts, and a position allowing a grounding of one parts of the circuit, said circuit breaker 1 (switch) being electrically connected upstream for example to a busbar, and downstream, for example to at least one cable, said cell being able to take three positions respectively a closed position, a disconnected position and a grounding position.
  • the control device of this cell comprises a shaft 3, said primary shaft, operating the circuit breaker control, mechanically connected to a drive shaft 4 of the contacts of the vacuum interrupter, and adapted to be manually operated by the intermediate an operating lever so as to perform the manual opening or closing of the contacts of said bulb, or a reset after an opening, according to the use of the cell, through an orifice provided in the envelope of the apparatus.
  • the control device also comprises a shaft 5 for the operation 4 of a grounding shaft.
  • the contacts of the bulb can be opened or closed by opening and closing buttons or reels respectively opening or closing that can be operated remotely, these buttons and coils not being shown in the drawings.
  • the contacts of the vacuum interrupter are held in the open position or in the closed position respectively by means of a so-called closing fastening device and a fastening device known as opening (not shown).
  • closing fastening device and a fastening device known as opening (not shown).
  • opening also known as opening (not shown).
  • These attachment devices are releasable either automatically in the event of an electrical fault, or by means of the buttons for opening and closing manual actuation, or via the remote actuating coils.
  • this cell also comprises a grounding switch in series with the aforementioned circuit breaker, said switch comprising an operating shaft 5 of the grounding shaft that can be operated by means of a lever through a orifice 6 provided for this purpose, after the actuation of a selector S of choice to a position in which the access port 6 to this operating shaft is released.
  • the actuation of this selector S has the effect of releasing or closing the access port to said operating shaft 5 of the grounding shaft, by means of a lever 8 said second lever inter locking, comprising a shutter shutter said second 9.
  • the circuit breaker and the earthing switch are mechanically connected by interlocking device I, to prevent the selector S from being switched from grounding to the earthing position. of the cell when the circuit breaker is in the closed position, to prevent access through an orifice 12 to the control shaft 3 of the circuit breaker, said primary shaft, when the selector S is in the grounding authorization position , the insertion port 6 of the operating lever of the operating shaft 5 is released.
  • interlock device I comprises a first interlocking lever 7 freely rotatably mounted around the control shaft 4 of the circuit breaker light bulb contacts, said lever comprising a first arm 10 having a flap 11 said first , able to close off or release the actuating orifice 12 of the circuit breaker, said first lever 7 being connected in an articulated manner via a second arm 13 to one end of a connecting rod 14 whose other end is connected in an articulated manner to one of the ends of a so-called first arm 15 belonging to a second interlocking lever 8 mounted hinged about a fixed axis of the cell and comprising a second arm 16 whose free end comprises a shutter 9 said second, closing the access port 6 to the operating shaft 5 of the grounding shaft.
  • the second arm 13 of the first interlocking lever 9 has a bent portion 17 having a first portion 18 located on the side of the first interlocking lever 7 and a second portion 19 located on the side of the second interlocking lever 9.
  • the axis of articulation between the connecting rod 14 and the second interlocking lever 8 is extended by a stud 20 intended to be introduced into a slot 21 of the selector S, which is slidably mounted relative to a fixed support of the cell between a first position in which the second interlocking lever 8 has been driven in the clockwise direction so that grounding is prevented, and a second position in which this second interlocking lever 8 has been driven into the counter-clockwise direction and the earthing is authorized, said selector S being able to be driven between these two positions by means of an actuator 22 located on its outer face, or by means of a lock 23 .
  • This interlocking device 1 also comprises a lock 23 comprising a cam 24 adapted to cooperate with a return part 25 integral with the first interlocking lever mentioned above 7, said lock 23 being able to drive said first lever 7 into the closed position of the opening 12 access to the control shaft of the circuit breaker and lock this lever in this position.
  • This device also comprises a part 26 integral with the control shaft 4 of the contacts of the vacuum interrupter and constituting a position indicator of this control shaft.
  • This piece comprises a stud 27 adapted to cooperate with the first interlocking lever 7 so as to prevent the movement of said lever and therefore also of the selector S to its grounding authorization position, when the apparatus is in position. closed position.
  • This piece also comprises a projecting portion 28 forming a probe, adapted to cooperate with a latch 29 rotatably mounted relative to a fixed axis of the support of the apparatus, said latch being biased towards the indicator 26 by means of a spring 30 and being adapted to cooperate on the one hand with the probe portion hereinafter referred to as probe and on the other hand, with the first interlocking lever 7 in the manner that will be described in the following.
  • the control device has brought the electrical equipment in a closed position.
  • the position of the position indicator 26 given by the position of the control shaft 4 of the contacts of the bulb, is such that the feeler 28 is retracted under the first interlocking lever 7, and does not interfere with the latch 29, which is biased by the spring towards the first interlocking lever 7.
  • the first interlocking lever 7 is supported on the stud 27 of the indicator 26, so that the flap 11 can not be brought opposite the access port 12 to the control shaft 3 of the control of the bulb via this lever 7.
  • the control device has brought the electrical equipment into an open position, the selector S of control of the grounding having not yet been actuated, so that the orifice 6 of access to the shaft of operation 5 of the earth shaft is closed by the flap 9 of the second interlocking lever 8.
  • the access port 12 to the operating shaft 3 of the control shaft 4 contacts of the switchgear is released and thus allows a closing maneuver.
  • the operating shaft of the control of the bulbs has achieved at least 70% of its opening rotational stroke, so that the probe 28 has moved the latch 29 in rotation clockwise against the return spring , showing a game j between the bent part 17 and the latch 29.
  • this clearance j allows the first interlocking lever 7 to be moved in rotation in the clockwise direction following an actuation of the position selector S to the position allowing the earthing , position illustrated on the figure 4 .
  • the selector S slides relative to the support of the apparatus, this sliding being guided by the displacement of the stud 27 in the arcuate groove 21 of the support of the apparatus.
  • the second interlocking lever 8 moves in rotation in the counterclockwise direction so as to release the access 6 to the operating shaft 5 of the grounding shaft.
  • the displacement of the selector S to the right in the drawings, corresponding to an authorization of earthing, can be carried out indifferently by the actuation of the actuator 22 of the selector S by the user, or by the actuation of the lock 23 by means of a key such as this is illustrated on the figure 4 .
  • the probe 28 remains retracted and does not act on the latch 29, which remains supported by its upper portion 29a on the first portion 18 of the bent portion 17 of the second arm 13 of the first interlocking lever 17 , as was the case on the figure 2 which illustrates the apparatus in closed position.
  • the latch 29 prevents the rotation of the second lever 8 and therefore the action on the selector S and thus on the lock 23. It is therefore no longer the stud 27 of the indicator 26 which blocks the selector S, a set i being created between this pad 27 and the first lever 7, but the latch 29 acting on the bent portion 17.
  • This latch 29 also prevents the displacement of the first lever 7 and thus prevents the locking of the control device in the open position, since the lever 7 can not close the orifice 12 for access to the primary shaft 3, the latter remaining therefore accessible for a closing maneuver.
  • the clearance present between the stud 27 and the lever 7 makes it possible to rotate the lever in the event of soldered contacts. This possibility of rotation makes it possible to force the prohibition of access to grounding.
  • the present invention thus prevents grounding of the cables if the circuit is soldered, the cables being always connected to the network, this being likely to cause a short circuit.
  • the invention therefore protects the user when it intends to put the cables to the ground, following a voluntary opening of the circuit breaker or switch to intervene thereon.

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  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Description

DOMAINE TECHNIQUE.TECHNICAL AREA.

La présente invention concerne un dispositif de commande d' un appareil de protection électrique destiné à être interposé entre deux parties d'un circuit électrique de manière à assurer au moins les fonctions respectivement de passage du courant entre les parties, d'interruption du courant entre les parties, et de mise à la terre de l'une des parties du circuit, ledit appareil comportant un appareil de coupure en série avec un appareil de mise à la terre, ledit dispositif de commande comportant un arbre dit arbre primaire, de manoeuvre de l'arbre de commande des contacts de l'appareil de coupure dit arbre secondaire, ledit arbre primaire étant apte à être manoeuvré par un utilisateur, et un arbre de manoeuvre de l'arbre de mise à la terre, également manoeuvrable par un utilisateur.The present invention relates to a control device of an electrical protection device intended to be interposed between two parts of an electrical circuit so as to ensure at least the functions respectively of current flow between the parts, of interruption of the current between the parts, and of grounding of one of the parts of the circuit, said apparatus comprising an apparatus of breaking in series with an apparatus of grounding, said device of control comprising a tree said primary shaft, of maneuver of the contact control shaft of the cutoff device said secondary shaft, said primary shaft being adapted to be operated by a user, and an operating shaft of the grounding shaft, also operable by a user.

ETAT DE LA TECHNIQUE ANTERIEURE.STATE OF THE PRIOR ART.

On connait des appareils de protection électrique comportant un voyant de signalisation d'un état soudé des contacts.Electrical protection devices are known comprising a signaling light of a soldered state of the contacts.

Le document EP 2 172 956 A2 divulgue un dispositif selon le préambule de la revendication 1.The document EP 2 172 956 A2 discloses a device according to the preamble of claim 1.

EXPOSE DE L'INVENTIONSUMMARY OF THE INVENTION

La présente invention a pour objet de proposer un dispositif de commande d'un appareil de protection électrique comportant un dispositif d'inter verrouillage, de conception simple, interdisant la mise à la terre d'une partie du circuit, de cadenasser le sélecteur des inter verrouillages en position terre ou de verrouiller le dispositif de commande en position ouverte, si le(s) contact(s) de l'appareil de coupure est (sont) soudé(s).The object of the present invention is to propose a device for controlling an electrical protection device comprising an interlocking device, of simple design, preventing the earthing of a part of the circuit, of locking the selector of the interferers. locks in the earth position or lock the control device in the open position, if the contact (s) of the switchgear is (are) welded (s).

A cet effet, la présente invention a pour objet un dispositif de commande pour un appareil de protection électrique, ce dispositif étant caractérisé en ce qu'il comporte un dispositif d'inter verrouillage entre les deux arbres dits primaire et secondaire précités, ledit dispositif d'inter verrouillage étant apte à interdire la mise à la terre de l'une des parties du circuit lorsque l'appareil est en position fermée, et coopérant avec des moyens de verrouillage commandés par l'arbre secondaire précité pour interdire la mise à la terre du circuit lorsque les contacts de l'appareil de coupure sont soudés.For this purpose, the subject of the present invention is a control device for an electrical protection device, this device being characterized in that comprises an interlocking device between said two said primary and secondary shafts, said interlocking device being able to prohibit the earthing of one of the parts of the circuit when the apparatus is in the closed position, and cooperating with locking means controlled by the aforementioned secondary shaft to prohibit the grounding of the circuit when the contacts of the switchgear are welded.

Selon une caractéristique particulière, les contacts sont considérés comme soudés, si l'arbre secondaire n'a pas réalisé au minimum 70% de sa course d'ouverture totale.According to a particular characteristic, the contacts are considered welded, if the secondary shaft has not achieved at least 70% of its total opening stroke.

Selon une autre caractéristique, le dispositif d'inter verrouillage précité comporte un sélecteur de position mobile entre une première position dans laquelle il autorise l'accès à l'orifice d'accès à l'arbre de manoeuvre de l'arbre de mise à la terre, et une seconde position dans laquelle il interdit cet accès, et en ce que les moyens de verrouillage précités coopèrent avec le dispositif d'inter verrouillage précité, pour interdire le passage du sélecteur précité de la seconde à la première position précitée si les contacts de l'appareil sont soudés.According to another characteristic, the aforementioned interlocking device comprises a position selector movable between a first position in which it allows access to the access port to the operating shaft of the setting shaft. earth, and a second position in which it prohibits this access, and in that the aforementioned locking means cooperate with the interlocking device mentioned above, to prevent the passage of the aforementioned selector of the second to the aforementioned first position if the contacts of the device are soldered.

Selon une autre caractéristique, ce dispositif comporte une serrure apte à cadenasser le sélecteur dans la première position précitée et/ou cadenasser le dispositif de commande dans la position ouverte, en empêchant l'accès à l'arbre dit primaire, si les contacts de l'appareil sont soudés.According to another feature, this device comprises a lock adapted to lock the selector in the aforementioned first position and / or lock the control device in the open position, preventing access to the so-called primary shaft, if the contacts of the device are soldered.

Selon une autre caractéristique, l'appareil de coupure est à technologie de coupure dans le vide.According to another characteristic, the cut-off apparatus has a vacuum breaking technology.

Selon une autre caractéristique, les moyens de verrouillage précités sont commandés par un indicateur de position solidaire de l'arbre secondaire précité et donnant la position des contacts de l'appareil de coupure aux moyens de verrouillage précités.According to another characteristic, the aforementioned locking means are controlled by a position indicator integral with the aforementioned secondary shaft and giving the position of the contacts of the breaking apparatus to the aforementioned locking means.

Selon une autre caractéristique, le dispositif d'inter verrouillage précité comporte un premier levier d'inter verrouillage monté librement rotatif autour de l'arbre secondaire précité et comportant un premier volet apte à libérer ou obturer l'orifice d'accès à l'arbre de manoeuvre dit arbre primaire, un second levier monté rotatif autour d'un axe fixe par rapport au support de l'appareil et comportant un volet dit second apte à obturer ou libérer l'orifice d'accès à l'arbre de manoeuvre de l'arbre de mise à la terre, lesdits premier et second leviers étant reliés mécaniquement, et le sélecteur de choix de position précité.According to another characteristic, the aforementioned interlocking device comprises a first interlocking lever freely rotatably mounted around the aforementioned secondary shaft and having a first flap capable of releasing or closing the access orifice to the shaft. operating said primary shaft, a second lever rotatably mounted about a fixed axis relative to the support of the apparatus and having a said second flap adapted to close or release the access port to the operating shaft of the grounding shaft, said first and second levers being mechanically connected, and the above-mentioned position selection selector.

Selon une autre caractéristique, l'indicateur de position précité comporte un plot apte à coopérer avec le premier levier d'inter verrouillage pour empêcher le déplacement du sélecteur vers la première position lorsque l'appareil est en position fermée.According to another feature, the aforementioned position indicator comprises a stud adapted to cooperate with the first interlocking lever to prevent the movement of the selector to the first position when the apparatus is in the closed position.

Selon une autre caractéristique, les moyens de verrouillage précités comportent un verrou monté articulé par rapport à un axe fixe du support et rappelé par un ressort en direction de l'arbre dit secondaire, ledit verrou coopérant avec une partie formant palpeur de l'indicateur donnant la position des contacts et avec des moyens prévus sur le premier levier de manière à autoriser ou empêcher l'entraînement en rotation du premier levier par l'intermédiaire de l'organe de manoeuvre du sélecteur.According to another characteristic, the aforementioned locking means comprise a latch pivotally mounted relative to a fixed axis of the support and biased by a spring towards the so-called secondary shaft, said latch cooperating with a feeler portion of the indicator giving the position of the contacts and with means provided on the first lever so as to allow or prevent the rotational drive of the first lever via the operating member of the selector.

Selon une autre caractéristique, ces moyens prévus sur le premier levier consistent principalement en ce que de la position fermée à une position d'ouverture des contacts correspondant à au moins 70% de la course d'ouverture en rotation de l'arbre dit secondaire, les formes entre le verrou et le levier interfèrent pour empêcher la rotation du premier levier de manière à empêcher la manoeuvre du sélecteur, et entre cette dernière position d'ouverture et la position d' ouverture à 100% des contacts, les formes entre le verrou et le levier n'interfèrent plus et permettent la rotation du levier et donc la manoeuvre du sélecteur.According to another characteristic, these means provided on the first lever mainly consist in that from the closed position to an open position of the contacts corresponding to at least 70% of the opening stroke in rotation of the so-called secondary shaft, the shapes between the latch and the lever interfering to prevent the rotation of the first lever so as to prevent the operation of the selector, and between this last open position and the open position at 100% of the contacts, the shapes between the latch and the lever no longer interfer and allow the rotation of the lever and thus the operation of the selector.

Selon une autre caractéristique, le premier levier d'inter verrouillage comporte un premier bras comportant le volet d'obturation de l'orifice d'accès à l'arbre dit primaire, et un second bras comportant une partie coudée, et en ce que les deux portions successives de cette partie coudée coopèrent avec la partie d'extrémité du verrou de manière qu'en position fermée de l'appareil, le verrou soit rappelé vers l'arbre dit secondaire et que l'effort du premier levier sur le verrou par l'intermédiaire de sa première portion de partie coudée, verrouille le sélecteur en position de manière à empêcher son déplacement vers la première position, et en ce que lorsque les contacts sont ouverts suivant une course de rotation d'au moins 70%, la partie en saillie de l'indicateur déplace le verrou de manière à permettre le déplacement du premier levier, ce déplacement permettant le déplacement du sélecteur vers la première position, et en ce que en position ouverte du produit et actionné du sélecteur, la seconde portion coudée exerce un effort sur la partie latérale du verrou apte à autoriser le déplacement du sélecteur.According to another characteristic, the first interlocking lever comprises a first arm comprising the shutter of the access opening to the said primary shaft, and a second arm having a bent portion, and in that the two successive portions of this bent portion cooperate with the end portion of the lock so that in the closed position of the device, the lock is biased towards the secondary shaft and that the effort of the first lever on the lock by through its first bent part portion, locks the selector in position so as to prevent its movement towards the first position, and in that when the contacts are open in a rotation stroke of at least 70%, the part protruding from the indicator moves the lock so as to allow the movement of the first lever, this displacement allowing the displacement of the selector to the first position, and in that in the open position of the prod uit and actuated selector, the second bent portion exerts a force on the side portion of the lock adapted to allow the movement of the selector.

Selon une autre caractéristique, la serrure précitée comporte une came apte à être entraînée en rotation au moyen d'une clé, ladite came étant apte à coopérer avec une partie de renvoi solidaire du premier levier d'inter verrouillage précité de manière à cadenasser ce premier levier en position d'obturation de l'orifice d'accès à l'arbre dit primaire et/ ou à cadenasser le sélecteur dans la première position précitée, cette coopération entre la came et la partie de renvoi afin de réaliser le cadenassage précité n'étant possible qu'après une certaine course en rotation de la came rendue possible par une course en rotation correspondante du renvoi de levier, laquelle course en rotation du renvoi de levier ne peut être obtenue que lorsque les contacts ne sont pas soudés.According to another characteristic, the aforementioned lock comprises a cam adapted to be rotated by means of a key, said cam being adapted to cooperate with a return portion secured to said first interlocking lever so as to lock said first lever in the closed position of the access opening to the said primary shaft and / or to lock the selector in the aforementioned first position, this cooperation between the cam and the return part in order to perform the aforementioned padlocking n ' it being possible that after a certain rotational stroke of the cam made possible by a corresponding rotational stroke of the lever return, which rotational stroke of the lever return can be obtained only when the contacts are not welded.

Avantageusement, une course en rotation de la came permettant le cadenassage est d'environ 90°.Advantageously, a rotational stroke of the cam for lockout is about 90 °.

Avantageusement, l'appareil de coupure réalise aussi la fonction sectionneur.Advantageously, the switching device also performs the disconnector function.

Avantageusement, l'appareil de coupure est un disjoncteur ou un interrupteur.Advantageously, the breaking device is a circuit breaker or a switch.

La présente invention a encore pour objet un appareil de protection électrique comportant les caractéristiques précédemment mentionnées prises seules ou en combinaison.The present invention further relates to an electrical protection apparatus having the aforementioned features taken alone or in combination.

BREVE DESCRIPTION DES DESSINS.BRIEF DESCRIPTION OF THE DRAWINGS

D'autres caractéristiques et avantages de l'invention apparaîtront mieux à la lecture d'un mode de réalisation préféré donné uniquement à titre d'exemple non limitatif, décrit en référence aux figures dans lesquelles :

  • La figure 1 est une vue partielle en perspective, illustrant un appareil de protection électrique commandé par un dispositif de commande selon l'invention, dans une position ouverte de l'appareil,
  • La figure 2 est une vue partielle en plan de la figure précédente, l'appareil étant en position fermée, et montrant en plus le sélecteur de choix de mise à la terre, en position non actionnée,
  • La figure 3 est une vue identique à la figure 2, dans une position ouverte de l'appareil, le sélecteur n'étant pas actionné,
  • La figure 4 est une vue identique à la figure 3, dans une position également ouverte de l'appareil, le sélecteur étant cette fois en position actionnée, et
  • La figure 5 est une vue identique à la figure 4, dans une position ouverte de l'appareil, dans le cas ou les contacts sont soudés.
Other characteristics and advantages of the invention will appear better on reading a preferred embodiment given solely by way of nonlimiting example, described with reference to the figures in which:
  • The figure 1 is a partial perspective view, illustrating an electrical protection device controlled by a control device according to the invention, in an open position of the apparatus,
  • The figure 2 is a partial plan view of the preceding figure, the apparatus being in the closed position, and further showing the selector of choice of earthing, in the non-actuated position,
  • The figure 3 is a view identical to the figure 2 in an open position of the apparatus, the selector not being actuated,
  • The figure 4 is a view identical to the figure 3 in an equally open position of the apparatus, the selector being this time in the actuated position, and
  • The figure 5 is a view identical to the figure 4 , in an open position of the device, in the case where the contacts are welded.

EXPOSE DETAILLE D'UN MODE DE REALISATION PARTICULIER.DETAILED DESCRIPTION OF A PARTICULAR EMBODIMENT

Sur les figures 1 à 5, on voit une cellule de distribution électrique moyenne tension destinée à être interposée entre deux parties d'un circuit électrique de manière à assurer au moins les fonctions respectivement de passage du courant entre les parties, d'interruption du courant entre les parties, de sectionnement du circuit et de mise à la terre de l'une des parties du circuit, une telle cellule étant décrite dans la demande de brevet FR 2 940 516 de la demanderesse.On the Figures 1 to 5 , we see a medium voltage electrical distribution cell intended to be interposed between two parts of an electrical circuit so as to ensure at least the functions respectively of current flow between the parts, interrupting the current between the parts, disconnecting the circuit and grounding one of the circuit parts, such a cell being described in the patent application FR 2 940 516 of the plaintiff.

Cette cellule comporte un disjoncteur 1 (ou interrupteur) de préférence à technologie de coupure dans le vide tel que par exemple une ampoule à vide, ledit disjoncteur réalisant de préférence également la fonction sectionneur et, en série avec ledit disjoncteur, un dispositif de mise à la terre 2 comportant un sélecteur S à au moins deux positions respectivement une position de passage du courant n'autorisant pas une mise à la terre de l'une des parties du circuit, et une position autorisant une mise à la terre de l'une des parties du circuit, ledit disjoncteur 1 (interrupteur) étant relié électriquement en amont par exemple à un jeu de barres, et en aval, par exemple à au moins un câbles, ladite cellule pouvant prendre trois positions respectivement une position fermée, une position déconnectée et une position de mise à la terre.This cell comprises a circuit breaker 1 (or switch) preferably with a vacuum breaking technology, such as for example a vacuum interrupter, said circuit-breaker preferably also performing the disconnector function and, in series with said circuit breaker, a switching device. the earth 2 having a selector S at at least two positions respectively a current passage position that does not allow earthing of one of the circuit parts, and a position allowing a grounding of one parts of the circuit, said circuit breaker 1 (switch) being electrically connected upstream for example to a busbar, and downstream, for example to at least one cable, said cell being able to take three positions respectively a closed position, a disconnected position and a grounding position.

Le dispositif de commande de cette cellule comporte un arbre 3, dit arbre primaire, de manoeuvre de la commande du disjoncteur, relié mécaniquement à un arbre 4 d'entraînement des contacts de l'ampoule à vide, et apte à être manoeuvré manuellement par l'intermédiaire d'un levier de manoeuvre de manière à réaliser l'ouverture ou la fermeture manuelle des contacts de ladite ampoule, ou bien un réarmement après une ouverture, selon l'utilisation de la cellule, à travers un orifice prévu dans l'enveloppe de l'appareillage.The control device of this cell comprises a shaft 3, said primary shaft, operating the circuit breaker control, mechanically connected to a drive shaft 4 of the contacts of the vacuum interrupter, and adapted to be manually operated by the intermediate an operating lever so as to perform the manual opening or closing of the contacts of said bulb, or a reset after an opening, according to the use of the cell, through an orifice provided in the envelope of the apparatus.

Le dispositif de commande comporte également un arbre 5 destiné à la manoeuvre 4 d'un arbre de mise à la terre.The control device also comprises a shaft 5 for the operation 4 of a grounding shaft.

En dehors du cas d'une ouverture automatique des contacts de l'ampoule lors de la survenue d'un défaut électrique sur la ligne à protéger, les contacts de l'ampoule peuvent être ouverts ou fermés par des boutons d'ouverture et de fermeture, ou bien des bobines respectivement d'ouverture ou de fermeture pouvant être actionnées à distance, ces boutons et bobines n'étant pas représentés sur les dessins.Apart from the case of an automatic opening of the contacts of the bulb when an electrical fault occurs on the line to be protected, the contacts of the bulb can be opened or closed by opening and closing buttons or reels respectively opening or closing that can be operated remotely, these buttons and coils not being shown in the drawings.

Tel que ceci est connu en soi, les contacts de l'ampoule à vide sont maintenus en position ouverte ou en position fermée respectivement par l'intermédiaire d'un dispositif d'accrochage dit de fermeture et d'un dispositif d'accrochage dit d'ouverture (non représentés). Ces dispositifs d'accrochage sont deverrouillables soit automatiquement en cas de défaut électrique, soit par l'intermédiaire des boutons d'ouverture et de fermeture d'actionnement manuel, soit par l'intermédiaire des bobines d'actionnement à distance.As is known per se, the contacts of the vacuum interrupter are held in the open position or in the closed position respectively by means of a so-called closing fastening device and a fastening device known as opening (not shown). These attachment devices are releasable either automatically in the event of an electrical fault, or by means of the buttons for opening and closing manual actuation, or via the remote actuating coils.

Comme déjà indiqué précédemment, cette cellule comporte également un interrupteur de mise à la terre en série avec le disjoncteur précité, ledit interrupteur comportant un arbre de manoeuvre 5 de l'arbre de mise à la terre manoeuvrable au moyen d'un levier à travers un orifice 6 prévu à cet effet, après l'actionnement d'un sélecteur S de choix vers une position dans laquelle l'orifice d'accès 6 à cet arbre de manoeuvre est libéré. L'actionnement de ce sélecteur S a pour effet de libérer ou d'obturer l'orifice d'accès audit arbre de manoeuvre 5 de l'arbre de mise à la terre, au moyen d'un levier 8 dit second levier d'inter verrouillage, comportant un volet d'obturation dit second 9.As already indicated above, this cell also comprises a grounding switch in series with the aforementioned circuit breaker, said switch comprising an operating shaft 5 of the grounding shaft that can be operated by means of a lever through a orifice 6 provided for this purpose, after the actuation of a selector S of choice to a position in which the access port 6 to this operating shaft is released. The actuation of this selector S has the effect of releasing or closing the access port to said operating shaft 5 of the grounding shaft, by means of a lever 8 said second lever inter locking, comprising a shutter shutter said second 9.

Le disjoncteur et l'interrupteur de mise à la terre sont reliés mécaniquement par un dispositif d'inter verrouillage I, permettant d'empêcher l'actionnement du sélecteur S de la mise à la terre vers la position d'autorisation de mise à la terre de la cellule lorsque le disjoncteur est en position fermé, d'empêcher l'accès par un orifice 12 à l'arbre de commande 3 du disjoncteur, dit arbre primaire, lorsque le sélecteur S est en position d'autorisation de mise à la terre, l'orifice d'introduction 6 du levier de manoeuvre de l'arbre de manoeuvre 5 de mise à la terre étant libéré. A cet effet, et tel que plus particulièrement illustré sur la figure 1, le dispositif d'inter verrouillage I comporte un premier levier d'inter verrouillage 7 monté librement rotatif autour de l'arbre de commande 4 des contacts de l'ampoule du disjoncteur, ledit levier comportant un premier bras 10 comportant un volet 11 dit premier, apte à obturer ou libérer l'orifice de manoeuvre 12 du disjoncteur, ledit premier levier 7 étant relié de manière articulé par l'intermédiaire d'un second bras 13 à l'une des extrémités d'une bielle 14 dont l'autre extrémité est reliée de manière articulée à l'une des extrémités d'un bras dit premier 15 appartenant à un second levier d'inter verrouillage 8 monté articulé autour d'un axe fixe de la cellule et comportant un second bras 16 dont l'extrémité libre comporte un volet 9 dit second, d'obturation de l'orifice d'accès 6 à l'arbre de manoeuvre 5 de l'arbre de mise à la terre.The circuit breaker and the earthing switch are mechanically connected by interlocking device I, to prevent the selector S from being switched from grounding to the earthing position. of the cell when the circuit breaker is in the closed position, to prevent access through an orifice 12 to the control shaft 3 of the circuit breaker, said primary shaft, when the selector S is in the grounding authorization position , the insertion port 6 of the operating lever of the operating shaft 5 is released. For this purpose, and as more particularly illustrated on the figure 1 , interlock device I comprises a first interlocking lever 7 freely rotatably mounted around the control shaft 4 of the circuit breaker light bulb contacts, said lever comprising a first arm 10 having a flap 11 said first , able to close off or release the actuating orifice 12 of the circuit breaker, said first lever 7 being connected in an articulated manner via a second arm 13 to one end of a connecting rod 14 whose other end is connected in an articulated manner to one of the ends of a so-called first arm 15 belonging to a second interlocking lever 8 mounted hinged about a fixed axis of the cell and comprising a second arm 16 whose free end comprises a shutter 9 said second, closing the access port 6 to the operating shaft 5 of the grounding shaft.

Le second bras 13 du premier levier d'inter verrouillage 9 comporte une partie coudée 17 comportant une première portion 18 située du côté du premier levier d'inter verrouillage 7 et une seconde portion 19 située du côté du second levier d'inter verrouillage 9.The second arm 13 of the first interlocking lever 9 has a bent portion 17 having a first portion 18 located on the side of the first interlocking lever 7 and a second portion 19 located on the side of the second interlocking lever 9.

L'axe d'articulation entre la bielle 14 et le second levier d'inter verrouillage 8 se prolonge par un plot 20 destiné à être introduit dans une lumière 21 du sélecteur S, lequel est monté coulissant par rapport à un support fixe de la cellule entre une première position dans laquelle le second levier d'inter verrouillage 8 a été entraîné dans le sens horaire de sorte que la mise à la terre est empêchée, et une seconde position dans laquelle ce second levier d'inter verrouillage 8 a été entraîné dans le sens anti-horaire et la mise à la terre est autorisée, ledit sélecteur S pouvant être entraîné entre ces deux positions au moyen d'un organe de manoeuvre 22 située sur sa face extérieure, ou bien par l'intermédiaire d'une serrure 23.The axis of articulation between the connecting rod 14 and the second interlocking lever 8 is extended by a stud 20 intended to be introduced into a slot 21 of the selector S, which is slidably mounted relative to a fixed support of the cell between a first position in which the second interlocking lever 8 has been driven in the clockwise direction so that grounding is prevented, and a second position in which this second interlocking lever 8 has been driven into the counter-clockwise direction and the earthing is authorized, said selector S being able to be driven between these two positions by means of an actuator 22 located on its outer face, or by means of a lock 23 .

Ce dispositif d'inter verrouillage l comporte en effet également une serrure 23 comportant une came 24 apte à coopérer avec une pièce formant renvoi 25 solidaire du premier levier d'inter verrouillage précité 7, ladite serrure 23 étant apte à entraîner ledit premier levier 7 dans la position d'obturation de l'orifice 12 d'accès à l'arbre de commande du disjoncteur et à verrouiller ce levier dans cette position.This interlocking device 1 also comprises a lock 23 comprising a cam 24 adapted to cooperate with a return part 25 integral with the first interlocking lever mentioned above 7, said lock 23 being able to drive said first lever 7 into the closed position of the opening 12 access to the control shaft of the circuit breaker and lock this lever in this position.

Ce dispositif comporte également une pièce 26 solidaire de l'arbre 4 de commande des contacts de l'ampoule à vide et constituant un indicateur de position de cet arbre de commande.This device also comprises a part 26 integral with the control shaft 4 of the contacts of the vacuum interrupter and constituting a position indicator of this control shaft.

Cette pièce comporte un plot 27 apte à coopérer avec le premier levier d'inter verrouillage 7 de manière à empêcher le déplacement dudit levier et donc également du sélecteur S vers sa position d'autorisation de mise à la terre, lorsque l'appareil est en position fermée.This piece comprises a stud 27 adapted to cooperate with the first interlocking lever 7 so as to prevent the movement of said lever and therefore also of the selector S to its grounding authorization position, when the apparatus is in position. closed position.

Cette pièce comporte également une partie en saillie 28 formant palpeur, apte à coopérer avec un verrou 29 monté rotatif par rapport à un axe fixe du support de l'appareillage, ledit verrou étant rappelé vers l'indicateur 26 au moyen d'un ressort 30 et étant apte à coopérer d'une part avec la partie formant palpeur ci-après dénommée palpeur et d'autre part, avec le premier levier d'inter verrouillage 7 de la manière qui sera décrite dans ce qui suit.This piece also comprises a projecting portion 28 forming a probe, adapted to cooperate with a latch 29 rotatably mounted relative to a fixed axis of the support of the apparatus, said latch being biased towards the indicator 26 by means of a spring 30 and being adapted to cooperate on the one hand with the probe portion hereinafter referred to as probe and on the other hand, with the first interlocking lever 7 in the manner that will be described in the following.

Le fonctionnement du dispositif de commande de la cellule selon l'invention va être décrit dans ce qui suit en référence aux figures.The operation of the control device of the cell according to the invention will be described in the following with reference to the figures.

Sur la figure 2, le dispositif de commande selon l'invention a amené l'appareillage électrique dans une position fermée. Dans cette position, la position de l'indicateur de position 26 donnée par la position de l'arbre de commande 4 des contacts de l'ampoule, est telle que le palpeur 28 est escamoté sous le premier levier d'inter verrouillage 7, et n'interfère pas avec le verrou 29, lequel est rappelé par le ressort en direction du premier levier d'inter verrouillage 7. Dans cette position de l'appareil, le premier levier d'inter verrouillage 7 est en appui sur le plot 27 de l'indicateur 26, de telle manière que le volet 11 ne peut pas être amené en regard de l'orifice d'accès 12 à l'arbre de manoeuvre 3 de la commande de l'ampoule par l'intermédiaire de ce levier 7.On the figure 2 , the control device according to the invention has brought the electrical equipment in a closed position. In this position, the position of the position indicator 26 given by the position of the control shaft 4 of the contacts of the bulb, is such that the feeler 28 is retracted under the first interlocking lever 7, and does not interfere with the latch 29, which is biased by the spring towards the first interlocking lever 7. In this position of the device, the first interlocking lever 7 is supported on the stud 27 of the indicator 26, so that the flap 11 can not be brought opposite the access port 12 to the control shaft 3 of the control of the bulb via this lever 7.

D'autre part, la première portion 18 de la partie coudée 17 du second bras 13 du premier levier d'inter verrouillage 7 a été amenée en appui sur la face d'extrémité 29a du verrou 29, de telle manière que l'orientation de l'effort exercé par le levier 7 sur le verrou 29 est telle que cet effort permet de verrouiller le sélecteur S en position c'est-à-dire d'empêcher son déplacement. De la même manière, il est impossible d'actionner la serrure 23 totalement, ce qui permettrait d'enlever la clé de manière à réaliser le verrouillage du sélecteur S en position d'autorisation de mise à la terre, car le renvoi 25 du levier d'inter verrouillage 7 empêche la came 24 d'effectuer une rotation complète de 90°, ce qui empêche de retirer la clé.On the other hand, the first portion 18 of the bent portion 17 of the second arm 13 of the first interlocking lever 7 has been brought to bear on the end face 29a of the latch 29, so that the orientation of the force exerted by the lever 7 on the latch 29 is such that this effort makes it possible to lock the selector S in position, that is to say to prevent its displacement. In the same way, it is impossible to actuate the lock 23 completely, which would make it possible to remove the key in such a way as to lock the selector S in the grounding authorization position, because the return of the lever Interlock 7 prevents the cam 24 from rotating 90 ° completely, which prevents the key from being removed.

Sur la figure 3, le dispositif de commande a amené l'appareillage électrique dans une position ouverte, le sélecteur S de commande de la mise à la terre n'ayant pas encore été actionné, de sorte que l'orifice 6 d'accès à l'arbre de manoeuvre 5 de l'arbre de mise à la terre est obturé par le volet 9 du second levier d'inter verrouillage 8. Dans cette position, l'orifice d'accès 12 à l'arbre de manoeuvre 3 de l'arbre de commande 4 des contacts de l'appareil de coupure est libéré et autorise donc une manoeuvre de fermeture. L'arbre de manoeuvre de la commande des ampoules a réalisé au moins 70% de sa course de rotation d'ouverture, de sorte que le palpeur 28 a déplacé le verrou 29 en rotation dans le sens horaire à l'encontre du ressort de rappel, faisant apparaître un jeu j entre la partie coudée 17 et le verrou 29. Il en résulte que ce jeu j permet au premier levier d'inter verrouillage 7 d'être déplacé en rotation dans le sens horaire suite à un actionnement du sélecteur S de position vers la position autorisant la mise à la terre, position illustrée sur la figure 4. Lors de ce déplacement, le sélecteur S coulisse par rapport au support de l'appareillage, ce coulissement étant guidé par le déplacement du plot 27 dans la rainure arquée 21 du support de l'appareillage. Pendant ce déplacement, le second levier d'inter verrouillage 8 se déplace en rotation dans le sens antihoraire de manière à libérer l'accès 6 à l'arbre de manoeuvre 5 de l'arbre de mise à la terre.On the figure 3 , the control device has brought the electrical equipment into an open position, the selector S of control of the grounding having not yet been actuated, so that the orifice 6 of access to the shaft of operation 5 of the earth shaft is closed by the flap 9 of the second interlocking lever 8. In this position, the access port 12 to the operating shaft 3 of the control shaft 4 contacts of the switchgear is released and thus allows a closing maneuver. The operating shaft of the control of the bulbs has achieved at least 70% of its opening rotational stroke, so that the probe 28 has moved the latch 29 in rotation clockwise against the return spring , showing a game j between the bent part 17 and the latch 29. As a result, this clearance j allows the first interlocking lever 7 to be moved in rotation in the clockwise direction following an actuation of the position selector S to the position allowing the earthing , position illustrated on the figure 4 . During this movement, the selector S slides relative to the support of the apparatus, this sliding being guided by the displacement of the stud 27 in the arcuate groove 21 of the support of the apparatus. During this movement, the second interlocking lever 8 moves in rotation in the counterclockwise direction so as to release the access 6 to the operating shaft 5 of the grounding shaft.

Le déplacement du sélecteur S vers la droite sur les dessins, correspondant à une autorisation de mise à la terre, peut être réalisé indifféremment par l'actionnement de l'organe de manoeuvre 22 du sélecteur S par l'utilisateur, ou bien par l'actionnement de la serrure 23 au moyen d'une clé tel que ceci est illustré sur la figure 4.The displacement of the selector S to the right in the drawings, corresponding to an authorization of earthing, can be carried out indifferently by the actuation of the actuator 22 of the selector S by the user, or by the actuation of the lock 23 by means of a key such as this is illustrated on the figure 4 .

Lorsque ce déplacement est réalisé au moyen de la serrure 23, une clé est introduite dans la serrure, et la came 24 associée à la serrure 23 est entraînée en rotation dans le sens antihoraire par rotation de la clé, jusqu'à ce que cette came 24 coopère avec le renvoi 25 du premier levier d'inter verrouillage 7, de manière à entraîner ledit levier 7 dans le sens horaire. Ceci a pour effet d'une part, d'entraîner le sélecteur S vers la droite de manière à entraîner le second levier d'inter verrouillage 8 en rotation dans le sens anti horaire et de libérer ainsi l'orifice d'accès 6 à l'arbre de manoeuvre 5 de l'arbre de mise à la terre, et d'autre part, d'amener la seconde portion 19 de la partie coudée 17 du second bras 13 en appui sur une partie latérale 29b du verrou 29 de manière à entraîner encore davantage ce verrou en rotation dans le sens horaire, le palpeur 28 de l'indicateur de position 26 n'ayant pas changé de position de position par rapport à la position qu'il occupait sur la figure 3. On remarque que dans cette position de l'appareil, le premier levier d'inter verrouillage 7 n'est plus en appui sur le plot 27 de l'indicateur de position 26.When this movement is performed by means of the lock 23, a key is inserted into the lock, and the cam 24 associated with the lock 23 is rotated in the counterclockwise direction by rotation of the key, until this cam 24 cooperates with the return 25 of the first interlocking lever 7, so as to drive said lever 7 in the clockwise direction. This has the effect, on the one hand, of driving the selector S to the right so as to cause the second interlocking lever 8 to rotate counterclockwise and thus to release the access orifice 6 to the operating shaft 5 of the earth shaft, and secondly, to bring the second portion 19 of the bent portion 17 of the second arm 13 bears against a lateral portion 29b of the latch 29 so as to further driving the latch in clockwise rotation, the probe 28 of the position indicator 26 having not changed its position relative to the position it occupied on the figure 3 . Note that in this position of the apparatus, the first interlocking lever 7 is no longer supported on the stud 27 of the position indicator 26.

Lors de cet actionnement de la serrure 23, la came 24 a effectué une rotation d'un angle atteignant 90° de la course de manoeuvre, ce qui permet de retirer la clé, à la fin de cet actionnement, et ainsi de verrouiller les leviers 7,8 dans cette position, verrouillant de cette manière le sélecteur S dans la seconde position précitée correspondant à une autorisation de mise à la terre.During this actuation of the lock 23, the cam 24 has rotated an angle up to 90 ° of the operating stroke, which allows the key to be removed at the end of this actuation, and thus to lock the levers 7.8 in this position, locking in this manner the selector S in the aforementioned second position corresponding to an authorization of earthing.

Sur la figure 5, la course en rotation de l'arbre de commande 4 de l'ampoule est inférieure à 40% de cette course d'ouverture maximale, car les contacts sont soudés et ne peuvent pas s'ouvrir complètement.On the figure 5 , the rotational travel of the control shaft 4 of the bulb is less than 40% of this maximum opening stroke, because the contacts are welded and can not open completely.

Il en résulte que le palpeur 28 reste escamoté et n'agit pas sur le verrou 29, lequel reste en appui par sa partie supérieure 29a sur la première portion 18 de la partie coudée 17 du second bras 13 du premier levier d'inter verrouillage 17, tel que ceci était le cas sur la figure 2 qui illustre l'appareil en position fermé. De ce fait, comme sur la figure 2, le verrou 29 empêche la rotation du second levier 8 et donc l'action sur le sélecteur S et ainsi sur la serrure 23. Ce n'est donc plus le plot 27 de l'indicateur 26 qui bloque le sélecteur S, un jeu i étant créé entre ce plot 27 et le premier levier 7, mais le verrou 29 agissant sur la partie coudée 17.It follows that the probe 28 remains retracted and does not act on the latch 29, which remains supported by its upper portion 29a on the first portion 18 of the bent portion 17 of the second arm 13 of the first interlocking lever 17 , as was the case on the figure 2 which illustrates the apparatus in closed position. As a result, as on the figure 2 , the latch 29 prevents the rotation of the second lever 8 and therefore the action on the selector S and thus on the lock 23. It is therefore no longer the stud 27 of the indicator 26 which blocks the selector S, a set i being created between this pad 27 and the first lever 7, but the latch 29 acting on the bent portion 17.

Ce verrou 29 empêche également le déplacement du premier levier 7 et ainsi empêche le verrouillage du dispositif de commande en position ouverte, puisque le levier 7 ne peut pas obturer l'orifice 12 d'accès à l'arbre primaire 3, celui-ci restant donc accessible pour une manoeuvre de fermeture.This latch 29 also prevents the displacement of the first lever 7 and thus prevents the locking of the control device in the open position, since the lever 7 can not close the orifice 12 for access to the primary shaft 3, the latter remaining therefore accessible for a closing maneuver.

Le jeu présent entre le plot 27 et le levier 7 rend possible une rotation du levier en cas de contacts soudés. Cette possibilité de rotation rend possible de forcer l'interdiction d'accès à la mise à la terre.The clearance present between the stud 27 and the lever 7 makes it possible to rotate the lever in the event of soldered contacts. This possibility of rotation makes it possible to force the prohibition of access to grounding.

La présente invention empêche donc une mise à la terre des câbles si le circuit est soudé, les câbles étant toujours connectés au réseau, ceci risquant de provoquer un court-circuit. L'invention permet donc de protéger l'utilisateur lorsque celui-ci a l'intention de mettre les câbles à la terre, suite à une ouverture volontaire du disjoncteur ou de l'interrupteur afin d'intervenir sur celui-ci.The present invention thus prevents grounding of the cables if the circuit is soldered, the cables being always connected to the network, this being likely to cause a short circuit. The invention therefore protects the user when it intends to put the cables to the ground, following a voluntary opening of the circuit breaker or switch to intervene thereon.

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.Of course, the invention is not limited to the embodiments described and illustrated which have been given by way of example.

Claims (16)

  1. Control device for an electric protection apparatus intended to be placed between two parts of an electric circuit so as to provide at least the functions respectively of flow of current between the parts, interruption of current between the parts and earthing of one of the parts of the circuit, said apparatus including a switching unit in series with an earthing device, said control device including a shaft referred to as primary shaft for manoeuvring the control shaft for the contacts of the switching unit referred to as secondary shaft, said primary shaft being able to be manoeuvred by a user, and a shaft for manoeuvring the earthing shaft, also manoeuvrable by a user, characterized in that it includes an interlock device (I) between the two aforementioned shafts referred to as primary (3) and secondary (4), said interlock device (I) being able to prohibit the earthing of one of the parts of the circuit when the apparatus is in the closed position, characterized in that said interlock device cooperates with latching means (28, 29, 17, 18, 19) controlled by the aforementioned secondary shaft (4) to prohibit the earthing of the circuit when the contacts of the switching unit are fused.
  2. Control device according to Claim 1, characterized in that the contacts are considered to be fused if the secondary shaft (4) has not travelled a minimum of 70% of its total opening trajectory.
  3. Control device according to either Claim 1 or Claim 2, characterized in that the aforementioned interlock device (I) includes a position selector (S) movable between a first position in which it authorizes access to the orifice (6) for access to the shaft (5) for manoeuvring the earthing shaft, and a second position in which it prohibits this access, and in that the aforementioned latching means (28, 29, 17, 18, 19) cooperate with the aforementioned interlock device (I) to prohibit the shifting of the aforementioned selector (S) from the second to the first aforementioned position if the contacts of the unit are fused.
  4. Control device according to any one of the preceding claims, characterized in that it includes a lock (23) able to lock up the selector (S) in the aforementioned first position and/or lock up the control device in the open position, preventing access to the shaft referred to as primary (3), if the contacts of the unit are fused.
  5. Control device according to any one of the preceding claims, characterized in that the switching unit is of vacuum interrupter technology.
  6. Control device according to any one of the preceding claims, characterized in that the aforementioned latching means (28, 29, 17, 18, 19) are controlled by a position indicator (26) secured to the aforementioned secondary shaft (4) and giving the position of the contacts of the switching unit to the aforementioned latching means.
  7. Control device according to any one of Claims 3 to 6, characterized in that the aforementioned interlock device (I) includes a first interlock lever (7) fitted to be freely rotatable around the aforementioned secondary shaft (4) and including a first flap (11) able to free up or close off the orifice (12) for access to the manoeuvring shaft (3) referred to as primary shaft, a second lever (8) fitted rotatably around an axis fixed with respect to the support of the apparatus and including a flap (9) referred to as second flap able to close off or free up the orifice (6) for access to the shaft (5) for manoeuvring the earthing shaft, said first and second levers (7, 8) being mechanically connected, and the aforementioned position choice selector (S).
  8. Control device according to Claims 6 and 7, characterized in that the aforementioned position indicator (26) includes a pin (27) able to cooperate with the first interlock lever (7) to prevent the displacement of the selector (S) towards the first position when the apparatus is in the closed position.
  9. Control device according to Claim 6, 7 or 8, characterized in that the aforementioned latching means (28, 29, 17, 18, 19) include a latch (29) fitted pivotably with respect to a fixed axis of the support and called back by a spring towards the shaft referred to as secondary (4), said latch (29) cooperating with a part forming a sensor (28) of the indicator (26) giving the position of the contacts and with means (17, 18, 19) provided on the first lever (7) so as to authorize or prevent the rotation of the first lever (7) via the manoeuvring component (22) of the selector (S).
  10. Control device according to Claims 7 and 9, characterized in that these means (17, 18, 19) provided on the first lever (7) consist mainly in that, from the closed position to an open position of the contacts corresponding to at least 70% of the opening rotational trajectory of the shaft referred to as secondary (4), the shapes between the latch (29) and the lever (7) interact in order to prevent the rotation of the first lever (7) so as to prevent the manoeuvring of the selector (S), and in that between this last opening position and the 100% open position of the contacts, the shapes between the latch (29) and the lever (7) no longer interact and allow the rotation of the lever (7) and therefore the manoeuvring of the selector.
  11. Control device according to either Claim 9 or Claim 10, characterized in that the first interlock lever (7) includes a first arm (10) including the flap (11) for closing off the orifice (12) for access to the shaft referred to as primary (3), and a second arm (13) including a bent part (17), and in that the two successive portions (18, 19) of this bent part (17) cooperate with the end part (29a) of the latch (29) such that, in the closed position of the apparatus, the latch (29) is called back towards the shaft referred to as secondary (4) and such that the effort of the first lever (7) on the latch (29) via its first bent-part portion (18) locks the selector (S) in position so as to prevent its displacement towards the first position, and in that when the contacts are open according to a rotational trajectory of at least 70%, the protruding part (28) of the indicator (26) displaces the latch (29) so as to allow the displacement of the first lever (7), this displacement allowing the displacement of the selector (S) towards the first position, and in that in the open position of the product and actuated position of the selector, the second bent portion (19) exerts an effort on the lateral part (29b) of the latch (29) able to authorize the displacement of the selector (S).
  12. Control device according to Claim 4, characterized in that the aforementioned lock (23) includes a cam (24) able to be rotationally driven by means of a key, said cam (24) being able to cooperate with a bellcrank part (25) secured to the aforementioned first interlock lever (7) so as to lock up this first lever (7) in a position of closing-off of the orifice (12) for access to the shaft referred to as primary (3) and/or to lock up the selector (S) in the aforementioned first position, this cooperation between the cam (24) and the bellcrank part (25), in order to carry out the aforementioned locking-up, being possible only after a certain rotational trajectory of the cam made possible by a corresponding rotational trajectory of the bellcrank, which rotational trajectory can be obtained only when the contacts are not fused.
  13. Control device according to Claim 12, characterized in that a rotational trajectory of the cam (24) allowing the locking-up is about 90°.
  14. Control device according to any one of the preceding claims, characterized in that the switching unit also performs the disconnector function.
  15. Control device according to any one of the preceding claims, characterized in that the switching unit is a circuit breaker or a switch.
  16. Medium voltage electric protection apparatus including a control device according to any one of Claims 1 to 15.
EP13305105.2A 2012-04-10 2013-01-30 Control device for a medium-voltage electric protection apparatus comprising an interlock device and electric protection apparatus comprising same Active EP2650891B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1201056A FR2989217B1 (en) 2012-04-10 2012-04-10 CONTROL DEVICE FOR A MEDIUM VOLTAGE ELECTRICAL PROTECTION APPARATUS HAVING INTERLOCK DEVICE AND ELECTRICAL PROTECTION APPARATUS HAVING THE SAME

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EP2650891A1 EP2650891A1 (en) 2013-10-16
EP2650891B1 true EP2650891B1 (en) 2014-08-27

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FR (1) FR2989217B1 (en)

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EP3089186B1 (en) * 2015-04-30 2019-09-11 General Electric Technology GmbH Electrical switchgear and method of operating an electrical switchgear
CN105428141B (en) * 2015-12-28 2018-09-07 甘肃长城电工电器工程研究院有限公司 A kind of breaker spring mechanism mechanical interlocking
FR3051593B1 (en) * 2016-05-23 2019-10-04 Schneider Electric Industries Sas DEVICE FOR SIGNALING AN ELECTRICAL FAULT IN AN ELECTRICAL PROTECTION APPARATUS, AND ELECTRICAL PROTECTION APPARATUS COMPRISING SUCH A DEVICE
CN106783359B (en) * 2017-01-04 2018-06-19 北海银河开关设备有限公司 Two station disconnecting switch operating mechanisms are pressed in one kind
CN110085463B (en) * 2018-01-26 2023-08-01 Abb 瑞士股份有限公司 Lock assembly for components of an electrical distribution system
WO2020208919A1 (en) * 2019-04-11 2020-10-15 株式会社日立ハイテクノロジーズ Automatic analyzing device
CN110571092A (en) * 2019-11-01 2019-12-13 江苏省如高高压电器有限公司 Novel combined type high-voltage combined electrical apparatus
CN113900408B (en) * 2021-09-18 2023-10-20 北京理工大学 Multistage cam interlocking structure
CN113867248B (en) * 2021-09-18 2023-10-17 北京理工大学 Multistage interlocking circuit based on multistage cam interlocking structure

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CN103367055B (en) 2018-05-22
CN103367055A (en) 2013-10-23
EP2650891A1 (en) 2013-10-16
FR2989217B1 (en) 2014-03-28

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