EP4064309A1 - System for switching off an electrical device - Google Patents
System for switching off an electrical device Download PDFInfo
- Publication number
- EP4064309A1 EP4064309A1 EP22161562.8A EP22161562A EP4064309A1 EP 4064309 A1 EP4064309 A1 EP 4064309A1 EP 22161562 A EP22161562 A EP 22161562A EP 4064309 A1 EP4064309 A1 EP 4064309A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- holding member
- configuration
- main switch
- holding
- elastic return
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 230000009471 action Effects 0.000 claims abstract description 16
- 238000005381 potential energy Methods 0.000 claims description 12
- 230000004044 response Effects 0.000 claims description 6
- 230000004907 flux Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 3
- 239000003708 ampul Substances 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 244000236931 Cydonia oblonga Species 0.000 description 2
- 241000287107 Passer Species 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
-
- 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
- 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
- H01H33/125—Load break switches comprising a separate circuit breaker
- H01H33/126—Load break switches comprising a separate circuit breaker being operated by the distal end of a sectionalising contact arm
-
- 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
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
- H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/28—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
-
- 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
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/38—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
Definitions
- the present invention relates to the field of medium voltage vacuum interrupters, which comprise components called vacuum interrupters or vacuum interrupters.
- Vacuum bulbs are used, for example, in medium voltage electrical distribution apparatus, that is to say from 1 to 52 kV.
- Vacuum interrupters are particularly associated with actuators to cut off the current in part of an electrical circuit.
- the opening of the vacuum interrupter is ensured only by the main switch during the opening stroke.
- the relative arrangement between the vacuum interrupter and the main switch is therefore constrained.
- the kinematic link between the vacuum interrupter and the main switch must be very precise. The dimensional tolerances on each element of the kinematic link must be small, given the number of elements involved in the assembly.
- the opening of the vacuum bottle requires only that the holding member leaves its holding configuration. Once the configuration of the holding member has been modified, the elastic return means is released, and the opening of the vacuum interrupter is ensured by the driving force of the elastic return means.
- the vacuum interrupter can be arranged more easily; since it suffices to move the holding member to obtain the opening of the vacuum interrupter.
- the precision necessary to obtain the opening of the vacuum interrupter is also less, since it suffices to remove the retaining member from its initial configuration.
- the energy to be supplied to cause the opening of the vacuum interrupter is less, since this energy corresponds only to the energy necessary to move the holding member.
- the vacuum interrupter is mounted as a branch of a main circuit of a phase of the electrical apparatus.
- the fixed electrode may comprise a rod extending along an axis and a contact body extending transversely to the axis.
- the fixed electrode can be formed by a plate.
- the mobile electrode comprises a rod extending along an axis.
- the mobile electrode comprises a contact body extending transversely to the axis.
- the movable electrode contact body may have a disc shape.
- the movable electrode contact body may have a spherical shape.
- the fixed electrode is formed by a plate.
- the cut-off system comprises a movable cup under the action of the elastic return means, the movable electrode comprises a pallet integral with the rod, and the movable cup is configured to drive the pallet.
- the pallet extends transversely to the rod.
- the cup is movable in translation along the axis of the rod.
- a clearance is present between the movable cup and the pallet when the holding member is in the configuration for holding the elastic return means.
- the elastic return means comprises a spring.
- the elastic return means is a spring.
- the elastic return means comprises a coil spring.
- the elastic return means comprises a spring
- the spring is compressed between a fixed wall of the cut-off system and the mobile cup.
- the spring is mounted stretched between a fixed wall of the cut-off system and the mobile cup.
- the coil spring is coaxial with the rod of the movable electrode.
- the movable cup comprises an orifice through which the rod of the movable electrode passes.
- the mobile cup in the form of a disk comprising an orifice in its center.
- the movable cup comprises a first disc-shaped portion, a second ring-shaped portion, the first portion and the second portion extending transversely to an axis, and a third cylindrical portion extending along the axis, the third portion connecting the first portion and the second portion, and the first portion comprises the orifice.
- the fixed wall extends radially in a plane perpendicular to the axis of the rod of the movable electrode.
- a dimension of the orifice of the movable cup is less than a dimension of the vane.
- the spring bears against the second portion of the mobile cup.
- the holding member is pivotally mounted around a pivot.
- the axis of the pivot is perpendicular to the axis of the rod of the movable electrode.
- the holding member comprises an elastic return means configured to hold the holding member in the holding configuration.
- the cut-off system comprises a main switch of the electrical device, the main switch is movable between a first position allowing passage of electric current in a main electric circuit and a second position prohibiting the passage of electric current in the main electric circuit, and the main switch is configured so that the holding member leaves its holding configuration when the main switch passes from the first position allowing the passage of the electric current to the second position prohibiting the flow of electric current.
- the opening of the vacuum interrupter being ensured by the elastic return means, the opening speed of the vacuum interrupter does not depend on the speed of actuation of the main switch. The behavior of the switching system is thus more repeatable and easier to tune.
- the holding member is pivotally mounted, and the main switch of the main circuit is linked to a control element which comprises a thrust zone configured to press on the holding member of so as to cause the holding member to pivot out of its holding configuration.
- the holding member is configured to pass from the holding configuration to the displacement configuration under the action of an electromagnet.
- the cut-off system comprises a mobile magnetic element kinematically linked to the main switch of the main circuit, the magnetic element being configured to circulate a magnetic flux in a control circuit of an electromagnet, the electromagnet being configured to change the holding member from the holding configuration to the displacement configuration in response to a displacement of the movable magnetic element.
- the mobile magnetic element is a permanent magnet.
- the mobile magnetic element is a magnetic core.
- the moving magnetic core may be a metal rod.
- the moving magnetic core may be soft iron.
- the holding member comprises a magnetic element which is attracted by the magnetic field created by the electromagnet.
- the drive circuit has a stationary magnetic core, an inductor surrounding the stationary magnetic core, and has a movable permanent magnet.
- the drive circuit has a fixed magnetic core, an inductor surrounding the fixed magnetic core, and has a movable magnetic core.
- the main switch of the main circuit is configured to electrically supply an electromagnet control circuit, the electromagnet being configured to pass the holding member of the hold pattern to move pattern in response to the power supply received from the main switch.
- the electromagnet control circuit is electrically powered by the main circuit of the electrical device.
- the holding member comprises a permanent magnet configured to exert a magnetic force on a magnetic pallet linked to the mobile electrode.
- the holding member comprises an electromagnet configured to exert a magnetic field opposed to a magnetic field generated by the permanent magnet.
- the holding member is movable in translation.
- the holding member is, for example, movable in translation in a direction perpendicular to the axis of the rod of the movable electrode of the vacuum interrupter.
- the main switch is configured to cause the movable electrode to pass into the closed position of the vacuum interrupter, is also configured to cause the elastic return means to pass into a position in which the potential energy of the elastic return means is greater than or equal to the potential energy corresponding to the holding configuration, and is also configured to move the holding member into its holding configuration when the main switch passes from the position prohibiting the passage of current in the main circuit to the position allowing the passage of current in the main circuit.
- the breaking system is reset by a closing operation of the main switch. This means that the various components and members of the cut-off system return to their initial configuration when the main switch is actuated to close the circuit to allow current to flow.
- the cut-off system comprises a pivoting link configured to move the elastic return means into a position in which the potential energy of the elastic return means is greater than or equal to the potential energy corresponding to the holding configuration when the switch main switches from the position prohibiting the passage of current in the main circuit to the position allowing the passage of current in the main circuit.
- the vacuum interrupter 2 is mounted as a branch of the main circuit 30 of a phase of the electrical apparatus 1. As illustrated in particular in the picture 2 , the vacuum interrupter 2 comprises a fixed electrode 4 and a movable electrode 5.
- the movable electrode 5 is configured to move between a first position P1, called the closed position, in which the fixed electrode 4 and the electrode mobile 5 are in contact with each other so as to allow an electric current to flow, and a second position P2, called the open position, in which the fixed electrode 4 and the mobile electrode 5 are separated l from each other so as to prevent the passage of electric current.
- the fixed electrode 4 and the mobile electrode 5 form an electric contact 3.
- An electric current can pass in the contact 3 when the fixed electrode 4 and the movable electrode 5 are resting on each other, as illustrated in the picture 2 .
- the current in the contact 3 is interrupted when the mobile electrode 5 and the fixed electrode 4 are far from each other, as illustrated in the picture 3 .
- the vacuum interrupter 2 is provided for medium voltage electrical equipment, that is to say a voltage between 1 kV and 52 kV.
- the electrical device 1 can for example be a switch.
- the vacuum interrupter 2 comprises an envelope 37 forming a sealed vacuum enclosure. By this is meant that the pressure prevailing inside the enclosure is less than 10 -4 millibar.
- a bellows 36 makes it possible to ensure the movement of the mobile electrode 5 while ensuring the tightness of the vacuum interrupter 2 vis-à-vis the outside.
- the main circuit 30 comprises a fixed contact 34.
- the electrical device 1 also comprises a grounding contact 35.
- the switch 20 is rotatable between a nominal position of circulation of the electric current in the main circuit 30, shown at A on the figure 1 , and a position in which switch 20 is connected to ground contact 35, shown at F.
- the figure 1 schematically describes the successive steps of an operation for opening the main circuit 30.
- the steps from A to F are in chronological order.
- the dotted lines terminated by an arrow schematize the passage of the current.
- the main switch 20 has initiated a rotational movement.
- An electrical contact between the switch 20 and the fixed contact 34 is still established, due to the width of the areas in contact.
- An electrical contact between the main switch 20 and the vacuum interrupter 2 is also made.
- An electric current flows simultaneously in the fixed contact 34 and in parallel in the vacuum interrupter 2.
- the main switch 20 has continued its rotational movement and is no longer in contact with the fixed contact 34.
- the main switch 20 is in contact with the vacuum interrupter 2. All the current flows through the vacuum interrupter 2.
- the contact 3 of the vacuum interrupter is closed, that is, the fixed electrode 4 and the mobile electrode 5 are in contact.
- the main switch 20 has triggered the opening of contact 3, i.e. mobile electrode 5 has started to move away from fixed electrode 4.
- Breaking system 50 enabling contact 3 of vacuum interrupter 2 to be opened will be described in detail in the following paragraphs.
- the distance between the movable electrode 5 and the fixed electrode 4 is maximum. Shortly after the zero crossing of the phase current, the current in the vacuum interrupter 2 cuts off. The current in the main circuit 30 is thus cut off.
- the main switch 20 has completed its rotational movement and is in contact with the earthing contact 35.
- the opening of the vacuum interrupter 2 only requires that the holding member 7 be moved away from its holding configuration P1'. Once the retaining member 7 has been released, the opening of the vacuum interrupter 2 is ensured by the elastic return means 6. In other words, the mechanical energy necessary to perform the opening of the vacuum interrupter 2 is supplied by the elastic return means 6. The energy to be supplied to cause the opening of the vacuum interrupter 2 is less, since this energy corresponds only to the energy necessary to move the holding member. In addition, the precision required to obtain the opening of the vacuum interrupter is less, since it suffices to move the holding member. The geometric tolerances of each element of the mechanism can therefore be higher than in the solutions according to the prior art. In addition, the vacuum interrupter can more easily be positioned in different ways, which is interesting to adapt to different applications.
- the holding configuration P1' can be a holding position for the holding member 7. This is the case when the holding member 7 is a mechanical retaining system.
- the holding configuration P1' can be an electrical or magnetic configuration of the holding member 7. This is the case when the holding member 7 is a magnetic retaining system.
- the elastic return means 6 comprises a spring.
- the elastic return means 6 is a spring. More precisely, the elastic return means 6 comprises a helical spring. Other reminder means can also be envisaged.
- the spring 6 is compressed between a fixed wall 14 of the cut-off system 50 and a movable cup 12. It is understood that the spring 6 is compressed with respect to its free state, that is to say when no external constraint is applied between the ends of the spring 6.
- the spring 6 is mounted with an adjusted preload to provide sufficient driving force to ensure the movement of the mobile electrode 5.
- the elastic return means 6 is in a state of maximum potential energy when the elastic return means 6 is in the immobilized position.
- the holding member 7 is in the holding configuration P1'.
- Contact 3 is then in the closed position P1 and allows current to flow through vacuum interrupter 2.
- the figure 2 corresponds to this state of the actuating device 50.
- the reference of the position of a movable element is indicated in parentheses.
- the fixed electrode 4 comprises in the example illustrated a rod 8 extending along an axis D and a contact body 9 extending transversely to the axis D.
- the mobile electrode 5 comprises a rod 10 extending along an axis D.
- the mobile electrode 5 also comprises a contact body 11 extending transversely to the axis D.
- the fixed electrode 4 and the mobile electrode 5 are coaxial.
- Mobile electrode 5 is mobile in translation along axis D of rod 10.
- Helical spring 6 is coaxial with rod 10 of mobile electrode 5.
- the cut-off system comprises a cup 12 movable under the action of the elastic return means 6, the movable electrode 5 comprises a pallet 13 integral with the rod 10, and the movable cup 12 is configured to drive the pallet 13.
- the movable cup 12 can drive the pallet 13 under the action of the elastic return means 6.
- the pallet 13 extends transversely to the rod 10.
- the cup 12 is movable in translation along the axis D of the rod 10.
- a play J is present between the mobile cup 12 and the pallet 13 when the holding member 7 is in the holding configuration P1' of the elastic return means 6.
- This axial play J makes it possible to guarantee that the mobile electrode 5 and the fixed electrode 4 are in good contact, that is to say that the electrical contact is indeed closed, when the elastic return means 6 is held by the holding member 7.
- the sealing bellows 36 which surrounds the movable electrode 5 provides a restoring force which presses the movable electrode 5 against the fixed electrode 4.
- An additional spring can be arranged at the inside the bellows 36 to increase the contact force.
- the picture 3 illustrates contact 3 in the open position.
- the holding member 7 is moved away from its holding configuration P1' and is in the configuration P2' in which the elastic return means 6 is released.
- the elastic return means 6 is thus free to move.
- the elastic return means is thus relaxed.
- the cup 12 has been moved by the spring 6, and has driven the movable electrode 5 through the intermediary of the pallet 13.
- the pallet 13 bears without play against the cup 12.
- the figure 2 and the picture 3 illustrates the extreme positions taken by the various components. The intermediate positions between these two extreme positions have not been shown.
- the mobile cup 12 comprises an orifice 15 through which the rod 10 of the mobile electrode 5 passes.
- the mobile cup 12 comprises a first disc-shaped portion 16, a second ring-shaped portion 17, the first portion 16 and the second portion 17 extending transversely to an axis D, and a third cylindrical portion 18 extending along the axis D, the third portion 18 connecting the first portion 16 and the second portion 17, and the first portion 16 comprises the port 15.
- the fixed wall 14 extends radially in a plane perpendicular to the axis D of the rod 10 of the movable electrode 5.
- One dimension of the orifice 15 of the movable cup 12 is less than one dimension of the pallet 13.
- the orifice 15 is for example circular.
- the pallet 13 has for example a disc shape.
- the spring 6 bears against the second portion 17 of the movable cup 12.
- the holding member 7 is pivotally mounted around a pivot 19.
- the axis of the pivot 19 is perpendicular to the axis D of the rod 10 of the movable electrode 5.
- the holding member 7 can take the form of a hook which can rest on the periphery 33 of the cup 12.
- the holding member 7 comprises an elastic return means 22 configured to hold the 'holding member 7 in the holding configuration P1'.
- the spring 6 is mounted extended between a fixed wall 14 of the cut-off system 50 and the movable cup 12. In other words, the spring then works in extension and not in compression. Like before, it is then understood that the spring 6 is extended with respect to its free state, that is to say without stress applied between its ends.
- the cut-off system 50 comprises a main switch 20 of the electrical device 1.
- the main switch 20 is movable between a first position P1" allowing passage of electric current in a main electric circuit 30 and a second position P2" preventing the passage of electric current in the main electrical circuit 30.
- the main switch 20 is configured so that the holding member 7 leaves its holding configuration P1' when the main switch 20 passes from the first position P1" allowing passage electric current to the second position P2" prohibiting the passage of electric current.
- the opening speed of the vacuum interrupter 2 is independent of the opening speed of the main switch 20, since the opening of the vacuum interrupter 2 is ensured by the elastic return means 6. The chain kinematics of the entire cut-off system is thus facilitated.
- the holding member 7 is pivotally mounted, and the main switch 20 of the main circuit 30 is linked to a control element 40 which includes a thrust zone 21 configured to press on the holding member 7 so as to pivoting the holding member 7 out of its holding configuration P1'.
- the holding configuration P1' thus corresponds to a holding position of the holding member 7.
- the holding member 7 leaves its configuration for holding P1' of the elastic return means 6 under the effect of the mechanical contact with the control element 40, linked to the main switch 20, when the opening stroke of the main circuit 30.
- the thrust zone 21 moves a portion of the holding member 7 like a cam.
- the displacement of the main switch 20 makes it possible to push back the holding member 7 and to cause it to leave its holding configuration P1'.
- the spring 6 is thus released, and moves the pallet 12 which carries with it the mobile electrode 5.
- the mechanical connection between the main switch 20 and the holding member 7 can accept higher dimensional tolerances than the solutions according to the prior art, since it suffices to remove the holding member 7 from its holding configuration P1'.
- the figures 4 to 8 illustrate embodiments in which the movement of the holding member 7 is carried out differently.
- the holding member 7 is configured to pass from the holding configuration P1' to the displacement configuration P2' under the action of an electromagnet 25.
- the cut-off system 50 comprises a movable magnetic element 23 kinematically linked to the main switch 20 of the main circuit 30.
- the magnetic element 23 is configured to circulate a magnetic flux in a control circuit 26 of an electromagnet 25, the electromagnet 25 being configured to cause the holding member 7 to pass from the holding configuration P1' to the displacement configuration P2' in response to a displacement of the mobile magnetic element 23.
- the element 38 ensures the connection between the main switch 20 and the mobile magnetic element 23.
- the mobile magnetic element 23 thus forms part of a magnetic circuit 42.
- the mobile magnetic element 23 is crossed by magnetic field lines.
- the mobile magnetic element 23 participates in the looping back of the magnetic field lines in the magnetic circuit 42.
- the magnetic flux in the magnetic circuit 42 varies according to the position of the mobile magnetic element 23.
- a movement of the magnetic element mobile magnet 23, for example a rotation thus makes it possible to vary the magnetic flux in the inductor 28.
- This inductor 28 placed in the control circuit 26 makes it possible to generate an electric voltage and from there an electric current which makes it possible to control the electromagnet 25.
- the control of the electromagnet 25 causes the holding member 7 to pass out of the holding configuration P1'. In other words, the holding member 7 leaves its holding configuration when the electromagnet 25 is controlled.
- the arrow f1 schematizes the movement of pivoting of the mobile magnetic element 23 and the arrows f2 schematize the magnetic field lines in the magnetic element 23.
- the control of the electromagnet 25 does not require an external power supply. Part of the mechanical energy of the movement of the main switch 20 is converted into electrical energy and ensures the control of the electromagnet 25 allowing the release of the holding member 7, and hence the means of elastic return 6.
- the magnetic properties of the mobile magnetic element, of the other components of the magnetic circuit as well as the electrical properties of the elements of the control circuit, such as the inductance, are chosen so as to obtain a voltage and an electric current of amplitude and of sufficient duration.
- the movable magnetic element 23 is a permanent magnet.
- the control circuit 26 comprises a fixed magnetic core 27, an inductance coil 28 surrounding the fixed magnetic core 27, and comprises a mobile permanent magnet 23.
- the holding member 7 comprises a magnetic element 31 which is attracted by the magnetic field created by the electromagnet 25.
- the mobile magnetic element 23 can be made of soft iron.
- the magnetic circuit 42 also includes a fixed permanent magnet.
- the control circuit 26 can thus comprise in this case a fixed magnetic core 27, an inductance coil 28 surrounding the fixed magnetic core 27, and comprises a mobile magnetic core 23.
- the figures 5 to 8 relate to embodiments which differ from the second embodiment in the manner in which the electromagnet 25 is controlled.
- the main switch 20 of the main circuit 30 is configured to electrically supply a control circuit 26 of the electromagnet 25, the electromagnet 25 being configured to pass the holding member 7 from the holding configuration to the displacement configuration in response to the power supply received from the main switch 20.
- control circuit 26 of the electromagnet 25 is electrically powered by the main circuit 30 of the electrical device 1.
- the main switch 20 includes an electrical connection zone 29 providing electrical contact between the control circuit 26 and the main circuit 30 when the main switch 20 is in an intermediate position between a nominal current flow position in the main circuit and a position P2" for opening the main circuit.
- the main switch 20 closes the electrical supply circuit of the control circuit 26.
- a voltage of the electrical supply circuit of the electromagnet is for example less than 20V so as to allow the transfer of current in the branch formed by the control circuit 26 and the vacuum interrupter 2.
- the holding member 7 comprises a permanent magnet 32 configured to exert a magnetic force on a movable magnetic carcass 24 linked to the movable electrode 5.
- the holding member 7 comprises an electromagnet 25 configured to exert a magnetic field opposed to a magnetic field generated by the permanent magnet 32.
- the electromagnet 25 comprises a coil 45 which can be controlled by the control circuit 26. When the electromagnet 25 is controlled, the latter generates a magnetic field opposing that created by the permanent magnet 32. The holding force of the magnet 32 is canceled. the elastic return means 6 then makes it possible to provide the force necessary to separate the mobile electrode 5 and the fixed electrode 4.
- a part of the holding member 7 is in this case linked to the mobile electrode 5. More precisely, the mobile magnetic carcass 24 is integral with the mobile electrode 5. A part of the holding member 7 is linked to the vacuum interrupter 2. More precisely, the electromagnet 25 is linked to the vacuum interrupter 2.
- the holding member 7 is movable in translation.
- the direction of the translation is the axis D of the rod 10 of the mobile electrode 5.
- the figures 7 and 8 illustrates a fourth embodiment.
- the holding member 7 is movable in translation in a direction D2 perpendicular to the axis D of the rod 10 of the movable electrode 5 of the vacuum interrupter 2.
- the figures 9 to 11 illustrate a fifth and a sixth embodiment.
- the holding member 7 is configured to pass from the holding configuration P1' to the displacement configuration P2' under the action of a magnetic component 41 connected to the main switch 20.
- the main switch 20 is kinematically linked to the magnetic component 41, that is to say that the main switch 20 can drive the magnetic component 41 when passing from position P1" to position P2".
- the magnetic component 41 is a permanent magnet configured to drive the holding member 7.
- the opening movement of the main switch 20 moves the permanent magnet 41, which attracts the holding member 7.
- holding member 7 is thus moved from the holding configuration P1', which here is a holding position, to the displacement configuration P2', which here is a displacement position.
- Spring 6 opens vacuum interrupter 2.
- the magnetic component 41 is a magnetic core configured to channel a magnetic field in a circuit magnetic circuit 42.
- the magnetic circuit 42 comprises two permanent magnets 43 and a magnetic core 44.
- the magnetic component 41 comprises two parts.
- the dotted lines schematically illustrate the looping of the field lines in the magnetic circuit 42.
- the field lines run through the two magnetic component parts 41 as well as the holding member 7.
- the holding member 7 is oriented under the effect of the magnetic field lines and is thus held in position.
- the holding member 7 is thus in the holding configuration P1'.
- the magnetic component 41 has been moved.
- the two magnetic component parts 41 are remote from the other components of the magnetic circuit 42, and no longer participate in the looping of the field lines of the permanent magnets 43.
- the holding member 7 no longer receives the effect of the magnetic field and does not is no longer maintained.
- a spring can contribute to moving the holding member 7.
- the holding member 7 is in the displacement configuration P2'.
- the figure 12 and 13 illustrate a seventh embodiment.
- the views of the figure 12 are top views.
- the views of the figure 13 are side views.
- Part (a) of the figure 12 and part (a) of figure 13 schematize the holding member 7 in the first position P1', in which the elastic return means 6 is immobilized.
- Part (b) of the figure 12 and part (b) of figure 13 schematize the holding member 7 in the second position P2', in which the elastic return means 6 is no longer held.
- the elastic return means 6 of the movable electrode 5 is held solely by magnetic forces.
- a magnetic component 41 linked to the main switch 20, is rotatable. The connection kinematics between the main switch 20 and the magnetic component 41 has not been detailed, and is not shown in part (b) of the figure 13 .
- the magnetic component 41 comprises 4 permanent magnets 43.
- the figure 12 diagrams the rotational movement of the magnetic component 41.
- a support part 46 is rigidly linked to the permanent magnets 43 as well as to the mobile electrode 5.
- the support part 46, the mobile component 41 and the permanent magnets 43 can form a magnetic circuit 42.
- the support part 46 and the mobile component 41 both participate in the looping of the field lines of the permanent magnets 43.
- the support part 46 is also linked to the spring 6.
- each permanent magnet 43 is opposite a portion of the magnetic component 41. There is thus looping of the field lines, which ensures a holding force of the support part 46.
- the magnetic characteristics of the various elements of the magnetic circuit 42, as well as the value of the air gap, are chosen so that the holding force of the support part 46 is greater than the force exerted by the spring 6.
- the position illustrated in part (b) of the figure 12 corresponds to a rotation of one eighth of a turn of the magnetic component 41.
- the permanent magnets 43 are no longer facing the element 41, and the feedback of the field lines is negligible.
- the support part 46 There is no longer any holding force for the support part 46, and the spring 6 causes the movement of the mobile electrode 5, and thus the opening of the contact 3.
- the movement of the main switch 20 causes the release of the elastic return means 6 without resorting to an electrical command.
- the main switch 20 is configured to cause the movable electrode 5 to pass into the closed position of the vacuum interrupter 2.
- the main switch 20 is also configured to cause the means to pass elastic return 6 in a position in which the potential energy of the elastic return means 6 is greater than or equal to the potential energy corresponding to the holding configuration P1'.
- the main switch 20 is also configured to move the holding member 7 into its holding configuration P1 when the main switch 20 passes from the position P2" preventing the passage of current in the main circuit 30 to the position P1" allowing current flow in the main circuit 30.
- the cut-off system 50 comprises a pivoting link, not shown, configured to move the elastic return means 6 into a position in which the potential energy of the elastic return means 6 is greater than or equal to the potential energy corresponding to the hold configuration P1' when the main switch 20 passes from the position P2" prohibiting the passage of current in the main circuit 30 to the position P1" allowing the passage of current in the main circuit 30.
- the return means 6 is a spring
- the spring 6 is compressed to a length identical to the length corresponding to the holding configuration P1', and the holding member 7 is returned to the holding configuration P1' .
- the spring 6 can also be compressed to a length less than the length corresponding to the holding configuration P1', corresponding to a higher potential energy, so as to prevent the spring 6 from exerting a stress on the holding member 7 , and thus facilitate the return of the holding member 7 to the holding configuration P1'.
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Abstract
Il est proposé un système de coupure (50) d'un appareil électrique (1), comportant :- Une ampoule à vide (2) comportant :-- Une électrode fixe (4),-- Une électrode mobile (5), configurée pour se déplacer entre :--- une position (P1) de fermeture,--- une position (P2) d'ouverture,- Un moyen de rappel élastique (6) configuré pour appliquer une force d'entrainement sur l'électrode mobile (5),- Un organe de maintien (7) du moyen de rappel élastique (6), configuré pour passer:-- d' une configuration (P1') de maintien, dans laquelle le moyen de rappel élastique (6) est immobilisé, à-- une configuration (P2') de déplacement, dans laquelle le moyen de rappel élastique (6) est libéré,le système de coupure étant configuré pour que l'électrode mobile (5) passe de la position de fermeture (P1) à la position d'ouverture (P2) sous l'action du moyen de rappel élastique (6) lorsque l'organe de maintien (7) quitte sa configuration de maintien (P1').A cut-off system (50) for an electrical device (1) is proposed, comprising:- A vacuum interrupter (2) comprising:-- A fixed electrode (4),-- A mobile electrode (5), configured to move between:--- a closing position (P1),--- an opening position (P2),- an elastic return means (6) configured to apply a driving force on the mobile electrode (5),- A holding member (7) for the elastic return means (6), configured to pass:-- from a holding configuration (P1'), in which the elastic return means (6) is immobilized , to-- a displacement configuration (P2'), in which the elastic return means (6) is released, the cut-off system being configured so that the movable electrode (5) passes from the closed position (P1) to the open position (P2) under the action of the elastic return means (6) when the holding member (7) leaves its holding configuration (P1').
Description
La présente invention se rapporte au domaine des appareils de coupure à vide à moyenne tension, qui comportent des composants appelés ampoules à vide ou encore ampoules sous vide. Les ampoules à vide sont par exemple utilisées dans les appareils électriques de distribution de moyenne tension, c'est-à-dire de 1 à 52 kV. Les ampoules à vide sont notamment associées à des actionneurs pour couper le courant dans une partie d'un circuit électrique.The present invention relates to the field of medium voltage vacuum interrupters, which comprise components called vacuum interrupters or vacuum interrupters. Vacuum bulbs are used, for example, in medium voltage electrical distribution apparatus, that is to say from 1 to 52 kV. Vacuum interrupters are particularly associated with actuators to cut off the current in part of an electrical circuit.
Il est connu, notamment par le brevet
Cependant, dans ce dispositif, l'ouverture de l'ampoule à vide est assurée uniquement par l'interrupteur principal au cours de la course d'ouverture. La disposition relative entre l'ampoule à vide et l'interrupteur principal est donc contrainte. De plus, la liaison cinématique entre l'ampoule à vide et l'interrupteur principal doit être très précise. Les tolérances dimensionnelles sur chaque élément de la liaison cinématique doivent être faibles, compte tenu du nombre d'éléments intervenant dans l'assemblage.However, in this device, the opening of the vacuum interrupter is ensured only by the main switch during the opening stroke. The relative arrangement between the vacuum interrupter and the main switch is therefore constrained. In addition, the kinematic link between the vacuum interrupter and the main switch must be very precise. The dimensional tolerances on each element of the kinematic link must be small, given the number of elements involved in the assembly.
Il est ainsi souhaitable de disposer d'une solution permettant davantage de possibilités de positionnement de l'ampoule à vide par rapport à l'interrupteur principal, et pouvant tolérer une moindre précision dans la réalisation des pièces mobiles participant à l'ouverture de l'ampoule à vide.It is thus desirable to have a solution allowing more possibilities for positioning the vacuum interrupter with respect to the main switch, and being able to tolerate less precision in the production of the moving parts participating in the opening of the vacuum bulb.
A cette fin, l'invention propose un système de coupure d'un appareil électrique, comportant :
- Une ampoule à vide comportant :
- -- Une électrode fixe,
- -- Une électrode mobile, configurée pour se déplacer entre :
- --- une première position, dite position de fermeture, dans laquelle l'électrode fixe et l'électrode mobile sont en contact l'une avec l'autre de façon à permettre un passage de courant électrique, et
- --- une deuxième position, dite position d'ouverture, dans laquelle l'électrode fixe et l'électrode mobile sont éloignées l'une de l'autre de façon à empêcher un passage de courant électrique,
- Un moyen de rappel élastique configuré pour appliquer une force d'entrainement sur l'électrode mobile,
- Un organe de maintien en position du moyen de rappel élastique, l'organe de maintien étant configuré pour passer :
- -- d'une première configuration dite configuration de maintien, dans laquelle le moyen de rappel élastique est immobilisé, à
- -- une deuxième configuration dite configuration de déplacement, dans laquelle le moyen de rappel élastique est libéré,
- A vacuum interrupter comprising:
- -- A fixed electrode,
- -- A movable electrode, configured to move between:
- --- a first position, called the closed position, in which the fixed electrode and the mobile electrode are in contact with each other so as to allow the passage of electric current, and
- --- a second position, called the open position, in which the fixed electrode and the mobile electrode are spaced apart so as to prevent the passage of electric current,
- An elastic return means configured to apply a driving force to the mobile electrode,
- A member for holding the elastic return means in position, the holding member being configured to pass:
- -- of a first configuration called the holding configuration, in which the elastic return means is immobilized,
- -- a second configuration called the displacement configuration, in which the elastic return means is released,
L'ouverture de l'ampoule à vide demande uniquement que l'organe de maintien quitte sa configuration de maintien. Une fois la configuration de l'organe de maintien modifiée, le moyen de rappel élastique est libéré, et l'ouverture de l'ampoule à vide est assurée par la force d'entrainement du moyen de rappel élastique. Par rapport aux solutions selon l'art antérieur, l'ampoule à vide peut être disposée plus facilement ; puisqu'il suffit de déplacer l'organe de maintien pour obtenir l'ouverture de l'ampoule à vide. La précision nécessaire pour obtenir l'ouverture de l'ampoule à vide est également moindre, puisqu'il suffit d'écarter l'organe de maintien de sa configuration initiale. De plus, l'énergie à fournir pour provoquer l'ouverture de l'ampoule à vide est moindre, puisque cette énergie correspond uniquement à l'énergie nécessaire à déplacer l'organe de maintien.The opening of the vacuum bottle requires only that the holding member leaves its holding configuration. Once the configuration of the holding member has been modified, the elastic return means is released, and the opening of the vacuum interrupter is ensured by the driving force of the elastic return means. Compared to the solutions according to the prior art, the vacuum interrupter can be arranged more easily; since it suffices to move the holding member to obtain the opening of the vacuum interrupter. The precision necessary to obtain the opening of the vacuum interrupter is also less, since it suffices to remove the retaining member from its initial configuration. In addition, the energy to be supplied to cause the opening of the vacuum interrupter is less, since this energy corresponds only to the energy necessary to move the holding member.
Les caractéristiques listées dans les paragraphes suivant peuvent être mises en œuvre indépendamment les unes des autres ou selon toutes les combinaisons techniquement possibles :The characteristics listed in the following paragraphs can be implemented independently of each other or in any technically possible combination:
L'ampoule à vide est montée en dérivation d'un circuit principal d'une phase de l'appareil électrique.The vacuum interrupter is mounted as a branch of a main circuit of a phase of the electrical apparatus.
L'électrode fixe peut comporter une tige s'étendant selon un axe et un corps de contact s'étendant transversalement à l'axe. L'électrode fixe peut être formée par une plaque.The fixed electrode may comprise a rod extending along an axis and a contact body extending transversely to the axis. The fixed electrode can be formed by a plate.
L'électrode mobile comporte une tige s'étendant selon un axe.The mobile electrode comprises a rod extending along an axis.
L'électrode mobile comporte un corps de contact s'étendant transversalement à l'axe. Le corps de contact de l'électrode mobile peut avoir une forme de disque. Le corps de contact de l'électrode mobile peut avoir une forme sphérique. Dans ce cas, l'électrode fixe est formée par une plaque.The mobile electrode comprises a contact body extending transversely to the axis. The movable electrode contact body may have a disc shape. The movable electrode contact body may have a spherical shape. In this case, the fixed electrode is formed by a plate.
Selon un mode de réalisation, le système de coupure comporte une coupelle mobile sous l'action du moyen de rappel élastique, l'électrode mobile comporte une palette solidaire de la tige, et la coupelle mobile est configurée pour entrainer la palette.According to one embodiment, the cut-off system comprises a movable cup under the action of the elastic return means, the movable electrode comprises a pallet integral with the rod, and the movable cup is configured to drive the pallet.
La palette s'étend transversalement à la tige.The pallet extends transversely to the rod.
La coupelle est mobile en translation selon l'axe de la tige.The cup is movable in translation along the axis of the rod.
Un jeu est présent entre la coupelle mobile et la palette lorsque l'organe de maintien est dans la configuration de maintien du moyen de rappel élastique.A clearance is present between the movable cup and the pallet when the holding member is in the configuration for holding the elastic return means.
La présence de ce jeu permet de garantir que l'électrode mobile et l'électrode fixe sont bien en contact, c'est-à-dire que le contact électrique est bien fermé.The presence of this clearance makes it possible to guarantee that the movable electrode and the fixed electrode are indeed in contact, that is to say that the electrical contact is indeed closed.
Le moyen de rappel élastique comprend un ressort.The elastic return means comprises a spring.
Le moyen de rappel élastique est un ressort.The elastic return means is a spring.
Le moyen de rappel élastique comprend un ressort hélicoïdal.The elastic return means comprises a coil spring.
Selon un mode de réalisation du système de coupure, dans lequel le moyen de rappel élastique comprend un ressort, le ressort est comprimé entre une paroi fixe du système de coupure et la coupelle mobile.According to one embodiment of the cut-off system, in which the elastic return means comprises a spring, the spring is compressed between a fixed wall of the cut-off system and the mobile cup.
En variante, le ressort est monté étiré entre une paroi fixe du système de coupure et la coupelle mobile.As a variant, the spring is mounted stretched between a fixed wall of the cut-off system and the mobile cup.
Le ressort hélicoïdal est coaxial avec la tige de l'électrode mobile.The coil spring is coaxial with the rod of the movable electrode.
Selon un mode de réalisation du système de coupure, la coupelle mobile comprend un orifice traversé par la tige de l'électrode mobile.According to one embodiment of the cut-off system, the movable cup comprises an orifice through which the rod of the movable electrode passes.
Selon un exemple de mise en œuvre, la coupelle mobile à la forme d'un disque comportant un orifice en son centre. Selon un autre exemple de mise en œuvre, la coupelle mobile comprend une première portion en forme de disque, une deuxième portion en forme d'anneau, la première portion et la deuxième portion s'étendant transversalement à un axe, et une troisième portion cylindrique s'étendant selon l'axe, la troisième portion reliant la première portion et la deuxième portion, et la première portion comprend l'orifice.According to an exemplary implementation, the mobile cup in the form of a disk comprising an orifice in its center. According to another example of implementation, the movable cup comprises a first disc-shaped portion, a second ring-shaped portion, the first portion and the second portion extending transversely to an axis, and a third cylindrical portion extending along the axis, the third portion connecting the first portion and the second portion, and the first portion comprises the orifice.
La paroi fixe s'étend radialement dans un plan perpendiculaire à l'axe de la tige de l'électrode mobile.The fixed wall extends radially in a plane perpendicular to the axis of the rod of the movable electrode.
Une dimension de l'orifice de la coupelle mobile est inférieure à une dimension de la palette.A dimension of the orifice of the movable cup is less than a dimension of the vane.
Le ressort est en appui contre la deuxième portion de la coupelle mobile.The spring bears against the second portion of the mobile cup.
Selon un mode de réalisation du système de coupure, l'organe de maintien est monté pivotant autour d'un pivot.According to one embodiment of the cut-off system, the holding member is pivotally mounted around a pivot.
L'axe du pivot est perpendiculaire à l'axe de la tige de l'électrode mobile.The axis of the pivot is perpendicular to the axis of the rod of the movable electrode.
L'organe de maintien comprend un moyen élastique de rappel configuré pour maintenir l'organe de maintien dans la configuration de maintien.The holding member comprises an elastic return means configured to hold the holding member in the holding configuration.
Selon un aspect de l'invention, le système de coupure comporte un interrupteur principal de l'appareil électrique, l'interrupteur principal est mobile entre une première position permettant un passage de courant électrique dans un circuit électrique principal et une deuxième position interdisant le passage de courant électrique dans le circuit électrique principal, et l'interrupteur principal est configuré pour que l'organe de maintien quitte sa configuration de maintien lorsque l'interrupteur principal passe de la première position permettant le passage du courant électrique à la deuxième position interdisant le passage du courant électrique. L'ouverture de l'ampoule à vide étant assurée par le moyen de rappel élastique, la vitesse d'ouverture de l'ampoule à vide ne dépend pas de la vitesse d'actionnement de l'interrupteur principal. Le comportement du système de coupure est ainsi plus répétable et plus facile à mettre au point.According to one aspect of the invention, the cut-off system comprises a main switch of the electrical device, the main switch is movable between a first position allowing passage of electric current in a main electric circuit and a second position prohibiting the passage of electric current in the main electric circuit, and the main switch is configured so that the holding member leaves its holding configuration when the main switch passes from the first position allowing the passage of the electric current to the second position prohibiting the flow of electric current. The opening of the vacuum interrupter being ensured by the elastic return means, the opening speed of the vacuum interrupter does not depend on the speed of actuation of the main switch. The behavior of the switching system is thus more repeatable and easier to tune.
Selon un mode de réalisation du système de coupure, l'organe de maintien est monté pivotant, et l'interrupteur principal du circuit principal est lié à un élément de commande qui comporte une zone de poussée configurée pour appuyer sur l'organe de maintien de façon à faire pivoter l'organe de maintien hors de sa configuration de maintien.According to one embodiment of the cut-off system, the holding member is pivotally mounted, and the main switch of the main circuit is linked to a control element which comprises a thrust zone configured to press on the holding member of so as to cause the holding member to pivot out of its holding configuration.
Selon un mode de réalisation, l'organe de maintien est configuré pour passer de la configuration de maintien à la configuration de déplacement sous l'action d'un électro-aimant.According to one embodiment, the holding member is configured to pass from the holding configuration to the displacement configuration under the action of an electromagnet.
Selon un exemple de mise en œuvre de l'invention, le système de coupure comporte un élément magnétique mobile cinématiquement lié à l'interrupteur principal du circuit principal, l'élément magnétique étant configuré pour faire circuler un flux magnétique dans un circuit de commande d'un électro-aimant, l'électro-aimant étant configuré pour faire passer l'organe de maintien de la configuration de maintien à la configuration de déplacement en réponse à un déplacement de l'élément magnétique mobile.According to an exemplary implementation of the invention, the cut-off system comprises a mobile magnetic element kinematically linked to the main switch of the main circuit, the magnetic element being configured to circulate a magnetic flux in a control circuit of an electromagnet, the electromagnet being configured to change the holding member from the holding configuration to the displacement configuration in response to a displacement of the movable magnetic element.
Selon un exemple de mise en œuvre, l'élément magnétique mobile est un aimant permanent.According to an example of implementation, the mobile magnetic element is a permanent magnet.
Selon une variante de mise en œuvre, l'élément magnétique mobile est un noyau magnétique.According to a variant implementation, the mobile magnetic element is a magnetic core.
Le noyau magnétique mobile peut être une tige métallique. Le noyau magnétique mobile peut être en fer doux.The moving magnetic core may be a metal rod. The moving magnetic core may be soft iron.
L 'organe de maintien comporte un élément magnétique qui est attiré par le champ magnétique crée par l'électro-aimant.The holding member comprises a magnetic element which is attracted by the magnetic field created by the electromagnet.
Le circuit de commande comporte un noyau magnétique fixe, une bobine d'inductance entourant le noyau magnétique fixe, et comporte un aimant permanent mobile.The drive circuit has a stationary magnetic core, an inductor surrounding the stationary magnetic core, and has a movable permanent magnet.
Le circuit de commande comporte un noyau magnétique fixe, une bobine d'inductance entourant le noyau magnétique fixe, et comporte un noyau magnétique mobile.The drive circuit has a fixed magnetic core, an inductor surrounding the fixed magnetic core, and has a movable magnetic core.
Selon un mode de réalisation du système de coupure, l'interrupteur principal du circuit principal est configuré pour alimenter électriquement un circuit de commande de l'électro-aimant, l'électro-aimant étant configuré pour faire passer l'organe de maintien de la configuration de maintien à la configuration de déplacement en réponse à l'alimentation électrique reçue de l'interrupteur principal.According to one embodiment of the cut-off system, the main switch of the main circuit is configured to electrically supply an electromagnet control circuit, the electromagnet being configured to pass the holding member of the hold pattern to move pattern in response to the power supply received from the main switch.
Selon un exemple de mise en œuvre, le circuit de commande de l'électro-aimant est alimenté électriquement par le circuit principal de l'appareil électrique.According to an exemplary implementation, the electromagnet control circuit is electrically powered by the main circuit of the electrical device.
Selon un mode de réalisation du système de coupure, l'organe de maintien comprend un aimant permanent configuré pour exercer une force magnétique sur une palette magnétique liée à l'électrode mobile.According to one embodiment of the cut-off system, the holding member comprises a permanent magnet configured to exert a magnetic force on a magnetic pallet linked to the mobile electrode.
L'organe de maintien comprend un électro-aimant configuré pour exercer un champ magnétique opposé à un champ magnétique généré par l'aimant permanent.The holding member comprises an electromagnet configured to exert a magnetic field opposed to a magnetic field generated by the permanent magnet.
Selon un exemple de mise en œuvre du système de coupure, l'organe de maintien est mobile en translation.According to an example of implementation of the cut-off system, the holding member is movable in translation.
L'organe de maintien est par exemple mobile en translation selon une direction perpendiculaire à l'axe de la tige de l'électrode mobile de l'ampoule à vide.The holding member is, for example, movable in translation in a direction perpendicular to the axis of the rod of the movable electrode of the vacuum interrupter.
Selon un autre aspect de l'invention, l'interrupteur principal est configuré pour faire passer l'électrode mobile dans la position de fermeture de l'ampoule à vide, est aussi configuré pour faire passer le moyen de rappel élastique dans une position dans laquelle l'énergie potentielle du moyen de rappel élastique est supérieure ou égale à l'énergie potentielle correspondant à la configuration de maintien,
et est également configuré pour déplacer l'organe de maintien dans sa configuration de maintien lorsque l'interrupteur principal passe de la position interdisant le passage du courant dans le circuit principal à la position permettant le passage du courant dans le circuit principal. Autrement dit, le système de coupure est réarmé par une manœuvre de fermeture de l'interrupteur principal. On entend par là que les différents composants et organes système de coupure retrouve leur configuration initiale lors d'un actionnement de l'interrupteur principal visant à fermer le circuit pour permettre le passage du courant.According to another aspect of the invention, the main switch is configured to cause the movable electrode to pass into the closed position of the vacuum interrupter, is also configured to cause the elastic return means to pass into a position in which the potential energy of the elastic return means is greater than or equal to the potential energy corresponding to the holding configuration,
and is also configured to move the holding member into its holding configuration when the main switch passes from the position prohibiting the passage of current in the main circuit to the position allowing the passage of current in the main circuit. In other words, the breaking system is reset by a closing operation of the main switch. This means that the various components and members of the cut-off system return to their initial configuration when the main switch is actuated to close the circuit to allow current to flow.
Le système de coupure comporte une biellette pivotante configurée pour faire passer le moyen de rappel élastique dans une position dans laquelle l'énergie potentielle du moyen de rappel élastique est supérieure ou égale à l'énergie potentielle correspondant à la configuration de maintien lorsque l'interrupteur principal passe de la position interdisant le passage du courant dans le circuit principal à la position permettant le passage du courant dans le circuit principal.The cut-off system comprises a pivoting link configured to move the elastic return means into a position in which the potential energy of the elastic return means is greater than or equal to the potential energy corresponding to the holding configuration when the switch main switches from the position prohibiting the passage of current in the main circuit to the position allowing the passage of current in the main circuit.
L'invention concerne également un appareil électrique comportant :
- un interrupteur principal d'un circuit principal,
- un système de coupure tel que décrit précédemment,
- a main switch of a main circuit,
- a cut-off system as described previously,
D'autres caractéristiques, détails et avantages apparaîtront à la lecture de la description détaillée ci-après, et à l'analyse des dessins annexés, sur lesquels :
- [
Fig. 1 ] est une représentation schématique d'un appareil électrique comportant un système de coupure comportant une ampoule à vide, - [
Fig. 2 ] est une représentation schématique partielle d'un premier mode de réalisation de l'invention, l'ampoule à vide étant en position fermée, - [
Fig. 3 ] est une représentation schématique partielle du premier mode de réalisation de l'invention, l'ampoule à vide étant en position ouverte, - [
Fig. 4 ] est une représentation schématique partielle d'un deuxième mode de réalisation de l'invention, - [
Fig. 5 ] est une représentation schématique partielle d'un troisième mode de réalisation de l'invention, avec l'ampoule à vide en position fermée, - [
Fig. 6 ] est une représentation schématique partielle du troisième mode de réalisation de l'invention, avec l'ampoule à vide en position ouverte, - [
Fig. 7 ] est une représentation schématique partielle d'un quatrième mode de réalisation de l'invention, l'ampoule à vide étant en position fermée, - [
Fig. 8 ] est une représentation schématique partielle du quatrième mode de réalisation de l'invention, l'ampoule à vide étant en position ouverte. - [
Fig. 9 ] est une représentation schématique partielle d'un cinquième mode de réalisation de l'invention, avec l'ampoule à vide en position ouverte, - [
Fig. 10 ] est une représentation schématique partielle d'un sixième mode de réalisation de l'invention, l'ampoule à vide étant en position fermée, - [
Fig. 11 ] est une représentation schématique partielle d'un sixième mode de réalisation de l'invention, l'ampoule à vide étant en position ouverte, - [
Fig. 12 ] est une représentation schématique partielle d'un septième mode de réalisation de l'invention, - [
Fig. 13 ] est une autre représentation schématique partielle du septième mode de réalisation de l'invention.
- [
Fig. 1 ] is a schematic representation of an electrical device comprising a cut-off system comprising a vacuum interrupter, - [
Fig. 2 ] is a partial schematic representation of a first embodiment of the invention, the vacuum interrupter being in the closed position, - [
Fig. 3 ] is a partial schematic representation of the first embodiment of the invention, the vacuum interrupter being in the open position, - [
Fig. 4 ] is a partial schematic representation of a second embodiment of the invention, - [
Fig. 5 ] is a partial schematic representation of a third embodiment of the invention, with the vacuum interrupter in the closed position, - [
Fig. 6 ] is a partial schematic representation of the third embodiment of the invention, with the vacuum interrupter in the open position, - [
Fig. 7 ] is a partial schematic representation of a fourth embodiment of the invention, the vacuum interrupter being in the closed position, - [
Fig. 8 ] is a partial schematic representation of the fourth embodiment of the invention, the vacuum interrupter being in the open position. - [
Fig. 9 ] is a partial schematic representation of a fifth embodiment of the invention, with the vacuum interrupter in the open position, - [
Fig. 10 ] is a partial schematic representation of a sixth embodiment of the invention, the vacuum interrupter being in the closed position, - [
Fig. 11 ] is a partial schematic representation of a sixth embodiment of the invention, the vacuum interrupter being in the open position, - [
Fig. 12 ] is a partial schematic representation of a seventh embodiment of the invention, - [
Fig. 13 ] is another partial schematic representation of the seventh embodiment of the invention.
Afin de faciliter la lecture des figures, les différents éléments ne sont pas nécessairement représentés à l'échelle. Sur ces figures, les éléments identiques portent les mêmes références. Certains éléments ou paramètres peuvent être indexés, c'est-à-dire désignés par exemple par premier élément ou deuxième élément, ou encore premier paramètre et second paramètre, etc. Cette indexation a pour but de différencier des éléments ou paramètres similaires, mais non identiques. Cette indexation n'implique pas une priorité d'un élément, ou paramètre par rapport à un autre et on peut interchanger les dénominations. Quand il est précisé qu'un sous-système comporte un élément donné, cela n'exclut pas la présence d'autres éléments dans ce sous-système.In order to facilitate reading of the figures, the various elements are not necessarily shown to scale. In these figures, identical elements bear the same references. Certain elements or parameters can be indexed, that is to say designated for example by first element or second element, or else first parameter and second parameter, etc. The purpose of this indexing is to differentiate between similar but not identical elements or parameters. This indexing does not imply a priority of an element, or parameter compared to another and one can interchange the denominations. When it is specified that a subsystem comprises a given element, this does not exclude the presence of other elements in this subsystem.
On a représenté sur la
- un interrupteur principal 20
d'un circuit principal 30, - une ampoule à vide 2, disposée en parallèle de l'interrupteur
principal 20.
- a
main switch 20 of amain circuit 30, - a
vacuum interrupter 2, arranged in parallel with themain switch 20.
Sur la
L'ampoule à vide 2 est montée en dérivation du circuit principal 30 d'une phase de l'appareil électrique 1. Comme illustré notamment sur la
L'ampoule à vide 2 est prévue pour un équipement électrique à moyenne tension, c'est-à-dire une tension comprise entre 1 kV et 52 kV. L'appareil électrique 1 peut être par exemple un interrupteur. L'ampoule à vide 2 comporte une enveloppe 37 formant une enceinte étanche sous vide. On entend par là que la pression régnant à l'intérieur de l'enceinte est inférieure à 10-4 millibar. Un soufflet 36 permet d'assurer le déplacement de l'électrode mobile 5 tout en assurant l'étanchéité de l'ampoule à vide 2 vis-à-vis de l'extérieur.The
Comme illustré sur la
La
Le système de coupure de l'appareil électrique 1 va maintenant être décrit.The cut-off system of
Le système de coupure 50 d'un appareil électrique 1 comporte :
- Une ampoule à vide 2 comportant :
- -- Une électrode fixe 4,
- -- Une électrode mobile 5, configurée pour se déplacer entre :
- --- une première position P1, dite position de fermeture, dans laquelle l'électrode fixe 4 et l'électrode mobile 5 sont en contact l'une avec l'autre de façon à permettre un passage de courant électrique, et
- --- une deuxième position P2, dite position d'ouverture, dans laquelle l'électrode fixe 4 et l'électrode mobile 5 sont éloignées l'une de l'autre de façon à empêcher un passage de courant électrique,
- Un moyen de rappel élastique 6 configuré pour appliquer une force d'entrainement sur l'électrode mobile 5,
- Un organe de maintien 7 en position du moyen de rappel élastique 6, l'organe de maintien 7 étant configuré pour passer :
- -- d'une première configuration P1' dite configuration de maintien, dans laquelle le moyen de rappel élastique 6 est immobilisé, à
- -- une deuxième configuration P2' dite configuration de déplacement, dans laquelle le moyen de rappel élastique 6 est libéré,
- A
vacuum interrupter 2 comprising:- -- A fixed
electrode 4, - -- A
movable electrode 5, configured to move between:- --- a first position P1, called the closed position, in which the fixed
electrode 4 and themovable electrode 5 are in contact with each other so as to allow the passage of electric current, and - --- a second position P2, called the open position, in which the fixed
electrode 4 and themobile electrode 5 are separated from each other so as to prevent the passage of electric current,
- --- a first position P1, called the closed position, in which the fixed
- -- A fixed
- An elastic return means 6 configured to apply a driving force on the
mobile electrode 5, - A holding
member 7 in position of the elastic return means 6, the holdingmember 7 being configured to pass:- -- of a first configuration P1' called the holding configuration, in which the elastic return means 6 is immobilized,
- -- a second configuration P2' called displacement configuration, in which the elastic return means 6 is released,
L'ouverture de l'ampoule à vide 2 demande uniquement d'écarter l'organe de maintien 7 de sa configuration de maintien P1'. Une fois l'organe de maintien 7 libéré, l'ouverture de l'ampoule à vide 2 est assurée par le moyen de rappel élastique 6. Autrement dit, l'énergie mécanique nécessaire à réaliser l'ouverture de l'ampoule à vide 2 est fournie par le moyen de rappel élastique 6. L'énergie à fournir pour provoquer l'ouverture de l'ampoule à vide 2 est moindre, puisque cette énergie correspond uniquement à l'énergie nécessaire à déplacer l'organe de maintien. De plus, la précision nécessaire pour obtenir l'ouverture de l'ampoule à vide est moindre, puisqu'il suffit de déplacer l'organe de maintien. Les tolérances géométriques de chaque élément du mécanisme peuvent donc être plus élevées que dans les solutions selon l'art antérieur. De plus, l'ampoule à vide peut plus facilement être positionnée de différentes manières, ce qui est intéressant pour s'adapter à des applications différentes. La configuration de maintien P1' peut être une position de maintien de l'organe de maintien 7. C'est le cas lorsque l'organe de maintien 7 est un système mécanique de retenue. La configuration de maintien P1' peut être une configuration électrique ou magnétique de l'organe de maintien 7. C'est le cas lorsque l'organe de maintien 7 est un système magnétique de retenue.The opening of the
Le moyen de rappel élastique 6 comprend un ressort. Sur l'exemple illustré, le moyen de rappel élastique 6 est un ressort. Plus précisément, le moyen de rappel élastique 6 comprend un ressort hélicoïdal. D'autres moyens de rappel peuvent aussi être envisagés.The elastic return means 6 comprises a spring. In the example illustrated, the elastic return means 6 is a spring. More precisely, the elastic return means 6 comprises a helical spring. Other reminder means can also be envisaged.
Dans le mode de réalisation du système de coupure 50 illustré notamment sur les
Le moyen de rappel élastique 6 est dans un état d'énergie potentielle maximale lorsque le moyen de rappel élastique 6 est dans la position d'immobilisation. Lorsque le moyen de rappel élastique 6 est dans cette position, l'organe de maintien 7 est dans la configuration de maintien P1'. Le contact 3 est alors en position de fermeture P1 et permet le passage de courant dans l'ampoule à vide 2. La
L'électrode fixe 4 comporte sur l'exemple illustré une tige 8 s'étendant selon un axe D et un corps de contact 9 s'étendant transversalement à l'axe D. L'électrode mobile 5 comporte une tige 10 s'étendant selon un axe D. L'électrode mobile 5 comporte aussi un corps de contact 11 s'étendant transversalement à l'axe D. L'électrode fixe 4 et l'électrode mobile 5 sont coaxiales. L'électrode mobile 5 est mobile en translation selon l'axe D de la tige 10. Le ressort hélicoïdal 6 est coaxial avec la tige 10 de l'électrode mobile 5.The fixed
Selon le mode de réalisation représenté sur les
La coupelle mobile 12 peut entrainer la palette 13 sous l'action du moyen de rappel élastique 6. La palette 13 s'étend transversalement à la tige 10. La coupelle 12 est mobile en translation selon l'axe D de la tige 10. Un jeu J est présent entre la coupelle mobile 12 et la palette 13 lorsque l'organe de maintien 7 est dans la configuration de maintien P1' du moyen de rappel élastique 6.The
Ce jeu axial J permet de garantir que l'électrode mobile 5 et l'électrode fixe 4 sont bien en contact, c'est-à-dire que le contact électrique est bien fermé, lorsque le moyen de rappel élastique 6 est maintenu par l'organe de maintien 7. Le soufflet d'étanchéité 36 qui entoure l'électrode mobile 5 assure une force de rappel qui plaque l'électrode mobile 5 contre l'électrode fixe 4. Un ressort additionnel, non représenté, peut être disposé à l'intérieur du soufflet 36 pour augmenter l'effort de contact.This axial play J makes it possible to guarantee that the
La
Selon le mode de réalisation du système de coupure illustré sur la
La paroi fixe 14 s'étend radialement dans un plan perpendiculaire à l'axe D de la tige 10 de l'électrode mobile 5. Une dimension de l'orifice 15 de la coupelle mobile 12 est inférieure à une dimension de la palette 13. Ainsi la palette 13 peut être entrainée par la coupelle mobile 12. L'orifice 15 est par exemple circulaire. La palette 13 possède par exemple une forme de disque. Le ressort 6 est en appui contre la deuxième portion 17 de la coupelle mobile 12. L'organe de maintien 7 est monté pivotant autour d'un pivot 19. L'axe du pivot 19 est perpendiculaire à l'axe D de la tige 10 de l'électrode mobile 5. L'organe de maintien 7 peut prendre la forme d'un crochet pouvant prendre appui sur la périphérie 33 de la coupelle 12. L'organe de maintien 7 comprend un moyen élastique de rappel 22 configuré pour maintenir l'organe de maintien 7 dans la configuration de maintien P1'.The fixed
Selon une variante non représentée, le ressort 6 est monté étendu entre une paroi fixe 14 du système de coupure 50 et la coupelle mobile 12. Autrement dit, le ressort travaille alors en extension et non en compression. Comme précédemment, on entend alors que le ressort 6 est étendu par rapport à son état libre, c'est-à-dire sans contrainte appliquée entre ses extrémités.According to a variant not shown, the
Comme schématisé notamment sur les
Selon le mode de réalisation illustré sur la
Dans ce mode de réalisation, l'organe de maintien 7 quitte sa configuration de maintien P1' du moyen de rappel élastique 6 sous l'effet du contact mécanique avec l'élément de commande 40, lié à l'interrupteur principal 20, lors de la course d'ouverture du circuit principal 30. La zone de poussée 21 déplace une portion de l'organe de maintien 7 à la manière d'une came.In this embodiment, the holding
Autrement dit, le déplacement de l'interrupteur principal 20 permet de repousser l'organe de maintien 7 et de lui faire quitter sa configuration de maintien P1'. Le ressort 6 est ainsi libéré, et déplace la palette 12 qui entraine avec elle l'électrode mobile 5. La liaison mécanique entre l'interrupteur principal 20 et l'organe de maintien 7 peut accepter des tolérances dimensionnelles plus élevées que les solutions selon l'art antérieur, puisqu'il suffit d'écarter l'organe de maintien 7 de sa configuration de maintien P1'.In other words, the displacement of the
Les
Selon ces modes de réalisation, l'organe de maintien 7 est configuré pour passer de la configuration de maintien P1' à la configuration de déplacement P2' sous l'action d'un électro-aimant 25.According to these embodiments, the holding
Selon le deuxième mode de réalisation, illustré sur la
L'élément magnétique mobile 23 fait ainsi partie d'un circuit magnétique 42. Autrement dit, l'élément magnétique mobile 23 est traversé par des lignes de champ magnétique. L'élément magnétique mobile 23 participe au rebouclage des lignes de champ magnétique dans le circuit magnétique 42. Ainsi, le flux magnétique dans le circuit magnétique 42 varie en fonction de la position de l'élément magnétique mobile 23. Un déplacement de l'élément magnétique mobile 23, par exemple une rotation, permet ainsi de faire varier le flux magnétique dans l'inductance 28. Cette inductance 28 placée dans le circuit de commande 26 permet de générer une tension électrique et de là un courant électrique qui permet de commander de l'électro-aimant 25. La commande de l'électro-aimant 25 fait passer l'organe de maintien 7 hors de la configuration de maintien P1'. Autrement dit, l'organe de maintien 7 quitte sa configuration de maintien lorsque l'électro-aimant 25 est commandé. Sur la
Dans ce mode de réalisation, la commande de l'électro-aimant 25 ne fait pas appel à une alimentation électrique extérieure. Une partie de l'énergie mécanique du déplacement de l'interrupteur principal 20 est convertie en énergie électrique et permet d'assurer la commande de l'électro-aimant 25 permettant de libérer l'organe de maintien 7, et de là le moyen de rappel élastique 6. Les propriétés magnétiques de l'élément magnétique mobile, des autres composants du circuit magnétique ainsi que les propriétés électriques des éléments du circuit de commande, telle l'inductance, sont choisies de façon à obtenir une tension et un courant électrique d'amplitude et de durée suffisante.In this embodiment, the control of the
Selon l'exemple de mise en œuvre illustré sur la
L'organe de maintien 7 comporte un élément magnétique 31 qui est attiré par le champ magnétique crée par l'électro-aimant 25.The holding
Une fois l'organe de maintien 7 écarté de la configuration de maintien P1', la séparation de l'électrode mobile 5 et de l'électrode fixe 4, grâce à l'action du moyen de rappel élastique 6, se déroule de la même manière que dans le premier mode de réalisation.Once the holding
Selon une variante de mise en œuvre non représentée, l'élément magnétique mobile 23 peut être en fer doux. Dans ce cas, le circuit magnétique 42 comprend également un aimant permanent fixe. Le circuit de commande 26 peut comporter ainsi dans ce cas un noyau magnétique fixe 27, une bobine d'inductance 28 entourant le noyau magnétique fixe 27, et comporte un noyau magnétique mobile 23.According to a variant implementation not shown, the mobile
Les
Selon ces modes de réalisation du système de coupure, l'interrupteur principal 20 du circuit principal 30 est configuré pour alimenter électriquement un circuit de commande 26 de l'électro-aimant 25, l'électro-aimant 25 étant configuré pour faire passer l'organe de maintien 7 de la configuration de maintien à la configuration de déplacement en réponse à l'alimentation électrique reçue de l'interrupteur principal 20.According to these embodiments of the cut-off system, the
Sur l'exemple des
Pour cela, l'interrupteur principal 20 comporte une zone de connexion électrique 29 assurant un contact électrique entre le circuit de commande 26 et le circuit principal 30 lorsque l'interrupteur principal 20 est dans une position intermédiaire entre une position nominale de circulation de courant dans le circuit principal et une position P2" d'ouverture du circuit principal. Autrement dit, l'interrupteur principal 20 vient fermer le circuit d'alimentation électrique du circuit de commande 26.For this, the
Une tension du circuit électrique d'alimentation de l'électro-aimant est par exemple inférieure à 20V de manière à bien permettre le transfert du courant dans la branche constituée par le circuit de commande 26 et l'interrupteur à vide 2.A voltage of the electrical supply circuit of the electromagnet is for example less than 20V so as to allow the transfer of current in the branch formed by the
Selon le mode de réalisation du système de coupure 50 illustré sur les
Autrement dit, une partie de l'organe de maintien 7 est dans ce cas liée de l'électrode mobile 5. Plus précisément, la carcasse magnétique mobile 24 est solidaire de l'électrode mobile 5. Une partie de l'organe de maintien 7 est liée à l'ampoule à vide 2. Plus précisément, l'électro-aimant 25 est lié à l'ampoule à vide 2.In other words, a part of the holding
Selon cet exemple de mise en œuvre, l'organe de maintien 7 est mobile en translation. La direction de la translation est l'axe D de la tige 10 de l'électrode mobile 5.According to this example of implementation, the holding
Les
Les
Dans le cinquième mode de réalisation, illustré sur la
Dans le sixième mode de réalisation, le composant magnétique 41 est un noyau magnétique configuré pour canaliser un champ magnétique dans un circuit magnétique 42. Le circuit magnétique 42 comporte deux aimants permanents 43 et un noyau magnétique 44. Le composant magnétique 41 comprend deux parties. Les pointillés illustrent schématiquement le rebouclage des lignes de champ dans le circuit magnétique 42. Sur la
Sur la
Les
Dans ce septième mode de réalisation, le moyen de rappel élastique 6 de l'électrode mobile 5 est maintenu uniquement par des forces magnétiques. Un composant magnétique 41, lié à l'interrupteur principal 20, est mobile en rotation. La cinématique de liaison entre l'interrupteur principal 20 et le composant magnétique 41 n'a pas été détaillée, et n'est pas représentée sur la partie (b) de la
Dans la position illustrée sur la partie (a) de la
La position illustrée sur la partie (b) de la
Dans ce mode de réalisation, le mouvement de l'interrupteur principal 20 provoque la libération du moyen de rappel élastique 6 sans faire appel à une commande électrique.In this embodiment, the movement of the
Selon un autre aspect de l'invention, l'interrupteur principal 20 est configuré pour faire passer l'électrode mobile 5 dans la position de fermeture de l'ampoule à vide 2. L'interrupteur principal 20 est aussi configuré pour faire passer le moyen de rappel élastique 6 dans une position dans laquelle l'énergie potentielle du moyen de rappel élastique 6 est supérieure ou égale à l'énergie potentielle correspondant à la configuration de maintien P1'. L'interrupteur principal 20 est également configuré pour déplacer l'organe de maintien 7 dans sa configuration de maintien P1 lorsque l'interrupteur principal 20 passe de la position P2" interdisant le passage du courant dans le circuit principal 30 à la position P1" permettant le passage du courant dans le circuit principal 30.According to another aspect of the invention, the
Autrement dit, le passage de l'interrupteur principal 20 vers la position P1" de passage du courant dans le circuit principal 30 permet de réarmer le système de coupure 50. Le moyen de rappel élastique 6 et l'organe de maintien 7 reprennent tous les deux leur position initiale. L'ampoule à vide 2 est ainsi prête pour une prochaine opération de coupure du courant dans le circuit principal 30.In other words, the passage of the
Pour cela, le système de coupure 50 comporte une biellette pivotante, non illustrée, configurée pour faire passer le moyen de rappel élastique 6 dans une position dans laquelle l'énergie potentielle du moyen de rappel élastique 6 est supérieure ou égale à l'énergie potentielle correspondant à la configuration de maintien P1' lorsque l'interrupteur principal 20 passe de la position P2" interdisant le passage du courant dans le circuit principal 30 à la position P1" permettant le passage du courant dans le circuit principal 30. Dans l'exemple illustré où le moyen de rappel 6 est un ressort, le ressort 6 est comprimé jusqu'à une longueur identique à la longueur correspondant à la configuration de maintien P1', et l'organe de maintien 7 est remis dans la configuration de maintien P1'. Le ressort 6 peut aussi être comprimé jusqu'à une longueur inférieure à la longueur correspondant à la configuration de maintien P1', correspondant à une énergie potentielle supérieure, de façon à éviter que le ressort 6 exerce une contrainte sur l'organe de maintien 7, et ainsi faciliter la remise de l'organe de maintien 7 dans la configuration de maintien P1'.For this, the cut-
Claims (15)
Applications Claiming Priority (1)
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FR2102954A FR3121267A1 (en) | 2021-03-24 | 2021-03-24 | Switching system of an electrical device |
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EP4064309A1 true EP4064309A1 (en) | 2022-09-28 |
EP4064309B1 EP4064309B1 (en) | 2024-07-10 |
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EP22161562.8A Active EP4064309B1 (en) | 2021-03-24 | 2022-03-11 | System for switching off an electrical device |
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US (1) | US11948765B2 (en) |
EP (1) | EP4064309B1 (en) |
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Citations (4)
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EP1580783A1 (en) * | 2004-03-25 | 2005-09-28 | Areva T&D SA | Control device for the coordinated actuation of at least two switching devices, of which one is a vacuum switch |
EP2182536A1 (en) | 2008-10-29 | 2010-05-05 | Areva T&D Sas | Current switch on an electric line comprising a vacuum cartridge |
FR3044162A1 (en) * | 2015-11-20 | 2017-05-26 | Schneider Electric Ind Sas | ELECTRICAL PROTECTION APPARATUS AND PARTICULARLY MEDIUM VOLTAGE ELECTRIC CIRCUIT BREAKER |
EP3567623A1 (en) * | 2018-05-07 | 2019-11-13 | ALSTOM Transport Technologies | Circuit breaker with vacuum switch |
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DE102005002139B4 (en) | 2005-01-13 | 2007-01-25 | Siemens Ag | Three-position switch with cam |
FR2946180B1 (en) | 2009-05-26 | 2012-12-14 | Areva T & D Sa | INTERNAL LATCHING AND INTERLOCKING DEVICE AT A SWITCH OR A CIRCUIT BREAKER. |
FR2970809B1 (en) | 2011-01-25 | 2013-02-22 | Schneider Electric Ind Sas | MEDIUM VOLTAGE CUTTING DEVICE COMPRISING A VACUUM BULB |
FR2972290B1 (en) | 2011-03-02 | 2013-04-19 | Schneider Electric Ind Sas | DEVICE FOR CURRENT CURRENT ON A DERIVED ELECTRIC LINE AND VACUUM BULB |
DE102011017815B3 (en) | 2011-04-29 | 2012-10-11 | Siemens Aktiengesellschaft | switchgear |
DE102011087630B4 (en) | 2011-12-02 | 2016-11-03 | Siemens Aktiengesellschaft | switchgear |
DE102012200962B4 (en) | 2012-01-24 | 2018-07-26 | Siemens Aktiengesellschaft | Switchgear, in particular switch disconnector, for medium-voltage switchgear |
CN104335312B (en) | 2012-06-25 | 2017-05-24 | 西门子公司 | Three-position load isolating switch for medium-voltage switchgear assemblies |
DE102013217834B4 (en) | 2013-09-06 | 2022-01-20 | Siemens Aktiengesellschaft | Switching device and method for switching such a switching device |
EP3046129B1 (en) | 2015-01-15 | 2019-09-11 | Schneider Electric Industries SAS | Shunt breaking system |
EP3046128B1 (en) | 2015-01-15 | 2018-07-04 | Schneider Electric Industries SAS | Shunt breaking system |
US9679724B2 (en) | 2015-07-13 | 2017-06-13 | Eaton Corporation | Component for electric power system, and contact assembly and open air arcing elimination method therefor |
FR3093226B1 (en) | 2019-02-25 | 2021-01-22 | Schneider Electric Ind Sas | Actuation system for a vacuum interrupter |
-
2021
- 2021-03-24 FR FR2102954A patent/FR3121267A1/en active Pending
-
2022
- 2022-03-11 EP EP22161562.8A patent/EP4064309B1/en active Active
- 2022-03-16 US US17/695,888 patent/US11948765B2/en active Active
- 2022-03-24 CN CN202210298161.8A patent/CN115132553A/en active Pending
Patent Citations (4)
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EP1580783A1 (en) * | 2004-03-25 | 2005-09-28 | Areva T&D SA | Control device for the coordinated actuation of at least two switching devices, of which one is a vacuum switch |
EP2182536A1 (en) | 2008-10-29 | 2010-05-05 | Areva T&D Sas | Current switch on an electric line comprising a vacuum cartridge |
FR3044162A1 (en) * | 2015-11-20 | 2017-05-26 | Schneider Electric Ind Sas | ELECTRICAL PROTECTION APPARATUS AND PARTICULARLY MEDIUM VOLTAGE ELECTRIC CIRCUIT BREAKER |
EP3567623A1 (en) * | 2018-05-07 | 2019-11-13 | ALSTOM Transport Technologies | Circuit breaker with vacuum switch |
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FR3121267A1 (en) | 2022-09-30 |
EP4064309B1 (en) | 2024-07-10 |
US11948765B2 (en) | 2024-04-02 |
US20220310339A1 (en) | 2022-09-29 |
CN115132553A (en) | 2022-09-30 |
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