EP3046129B1 - Système de rupture de shunt - Google Patents
Système de rupture de shunt Download PDFInfo
- Publication number
- EP3046129B1 EP3046129B1 EP15305036.4A EP15305036A EP3046129B1 EP 3046129 B1 EP3046129 B1 EP 3046129B1 EP 15305036 A EP15305036 A EP 15305036A EP 3046129 B1 EP3046129 B1 EP 3046129B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- moving contact
- contact
- pallet
- vacuum interrupter
- region
- 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.)
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- 230000007246 mechanism Effects 0.000 claims description 21
- 239000004020 conductor Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000872 buffer Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H33/6661—Combination with other type of switch, e.g. for load break switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
- H01H33/121—Load break switches
- H01H33/122—Load break switches both breaker and sectionaliser being enclosed, e.g. in SF6-filled container
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
Definitions
- the present invention relates to a shunt breaking device designed to break an electrical circuit in a medium voltage switch disconnector, incorporating such a device.
- the features of the preamble of the independent claim are known from EP 0 693 763 A1 .
- Related technology is known from DE 10 2010 045233 A1 .
- an electrical switch disconnector is designed to provide a making or breaking of specified currents.
- it mainly comprises a sealed enclosure filled with a high dielectric strength gas, in which a pair of main contacts are arranged, one stationary contact and the other movable, connected to an operating drive.
- a pair of arcing contact are sometimes electrically connected in parallel to the main contacts, such as to open the arcing contacts after the main contacts during breaking, and to close the arcing contacts before the main contacts during making.
- EP2182536 describes an application for a switch disconnector with rotary motion of the contacts.
- the linkage operating the vacuum interrupter ( Figure 1 ) has a sliding joint 10 between the lever 7 and the moving contact 5 of the vacuum interrupter.
- the end positions and movement (velocity) of moving contact of vacuum interrupter depends on the length of ratios of lever 7 i.e. distance between the pivot 11 and its free end 9 to the distance between the pivot 11 to the sliding joint 10.
- EP2479769 discloses an application for a switch disconnector having moving contacts with rotary and sliding or linear motion.
- the lever 18, interacting with the main moving contact is pivoted at two positions 11 and 21.
- This lever articulates/rotates about different pivots during opening and closing of the switch disconnector.
- the lever 18 rotates about pivot 21.
- This lever has an oblong slot which allows it to rotate about pivot 11 during closing of switch disconnector.
- the linkage operating the vacuum interrupter has a lever 18 which is pivoted about the pin 21.
- This lever is connected to the moving contact of vacuum interrupter by a hinge 11.
- the end positions and movement (velocity) of moving contact of vacuum interrupter depends upon the length ratios of the lever 18 i.e. distance between the pivot 11 and its free end to the distance between pivot 11 to the pivot pin 21.
- Prior art DE10047032 relates to an application for a switch disconnector having moving contacts with rotary motion ( figure 5 ).
- Secondary circuit vacuum interrupter and linkage mechanism
- Cam 12 operates a pin 11 which is rigidly connected to the moving contact of the vacuum interrupter.
- the secondary circuit along with the vacuum interrupter is mounted on the moving contact which increases the mass of the moving contact and shall demand more energy to move the contacts of switch disconnector.
- the present invention provides for a Shunt Breaking System for a medium voltage switching apparatus, as defined in the independent claim, such that the system is designed to generate a parallel or secondary circuit within the said apparatus where the linkage mechanism included in the said system allows the vacuum interrupter to be placed at any desirable position based on the available space within the said switching device.
- the present invention is intended to function as a parallel or secondary circuit for an existing switch disconnector. Considering the size of existing enclosures, vacuum interrupter has to be positioned in location such that the new linkage mechanism is rendered suitable to transfer the motion to the vacuum interrupter in less space or rather available space.
- a shunt breaking system of the present invention comprising a primary circuit consisting of stationary contact (1) and moving contact (18); a secondary circuit consisting of a vacuum interrupter (5) electrically connected to the stationary contact (1) on terminal (12) with a suitable connection means (4) such as a screw and a linkage mechanism comprising multiple linkage means supported on a linkage support (6) having top linkage means (8) connected to pulling pin (7) at its first end and bottom linkage means (10) at its second end by means of sliding pins (9) slidable into slits provided in the linkage support (6).
- the second end of bottom linkage means (10) is connected by stationary pin (11) fixedly placed in recess provided in fixed support (19).
- a collar (3) configured of passing through a bore in the linkage support (6), is connected to bottom linkage means (10) with stationary pin (11) at collar first end and the moving contact end (13) of vacuum interrupter (5) at collar second end.
- the fixed support (19) comprising an inverse 'F' slot guiding a guiding pin (17), pulling pin (7) and pallet base (14) in it, is enabled to support linkage mechanism and insulate live parts from nearest earth/tank and other phase conductors.
- the fixed support (19) comprising the pallet base (14) with pallet contact (15) rigidly fixed thereto.
- the fixed support (19) comprises of regions A, B and C which together comprise a guiding slot.
- the moving contact end (13) is electrically connected to pallet contact (15) by means of a flexible wire (20), said pallet contact interacting with a protrusion (22) protruding out of an arm of the moving contact.
- An insulating cover (2) is sleeved over the vacuum interrupter (5) to provide necessary insulation during TRV.
- the pallet contact (15) is rigidly fixed to the pallet base (14).
- the guiding pin (17) configured to pass through the pulling lever (16) is connected to pallet base (14) at both ends.
- the shunt breaking system of the present invention is of medium voltage type suitable for placement in a medium voltage switching apparatus such as a switch disconnector.
- the operating drive is a linear operating drive whereas in another embodiment, the operating mechanism is a rotary operating mechanism.
- the system of the present invention is designed to generate a parallel or secondary circuit in the said switch apparatus.
- the operating drive of the present invention is designed to actuate the moving contact (18) takes four positions of opening position, disconnecting position, separating position and closing position. Before the four positions are achieved, the system of the present invention remains in an initial position.
- Figure 10 and 12 shows the initial position of the system in which the current flows from the stationary contact (1) to the moving contact (18) through the primary circuit.
- the secondary circuit is inactive and vacuum interrupter (5) is in close position.
- the figure shows regions D i.e. profiled region on pallet contact (15); region E i.e. profiled region on moving contact (18) and region F i.e. profiled region of pulling lever (16).
- the opening position is a position for connection between the protrusion (22) and the pallet contact (15) when the moving contact (18) is electrically connected to the pallet contact (15) to establish a secondary circuit (1-12-13-20-15-18) besides a primary circuit (1-18).
- the moving contact travels vertically upwards enabling region E to interact with region D.
- the guiding pin (17) being connected to pallet base interacts with region F of the pulling lever (16) transferring no movement to the vacuum interrupter (5) resulting in the vacuum interrupter being in closed position.
- disconnecting position is a position in which the moving contact (18) leaves the stationary contact (1) causing the primary circuit (1-18) to become inactive and current to flow only through the secondary circuit.
- the guiding pin (17) travels in region F of the pulling lever (16) and region A of the fixed support (19) transferring no movement to the vacuum interrupter resulting in the vacuum interrupter (5) being in closed position.
- the guiding pin (17) on achieving a sufficient dielectric distance attaches to the pulling lever (16); the pulling pin (7) constrained with pulling lever (16) pulls the linkage support (6) for attaching to collar (3) thereto.
- the ratio of length of top linkage means (8) and the bottom linkage means (10) is modified based on desired rating, stroke or velocity required for opening the moving contact (18). In the present embodiment, the length of top linkage means (8) and bottom linkage means (10) is equal making the ratio of velocity of pulling pin (7) to linkage support (6) to 2:1.
- the linkage support (6) engages the collar (3) and vacuum interrupter moving contacts, the vacuum interrupter contact will open with half velocity in comparison to moving contact (18). The length of the linkage means to open the vacuum interrupter contacts depends on the desired velocity.
- the separating position is a position in which the guiding pin (17) and pallet pivot (21) interact with region B of the fixed support (19) while reducing speed of vacuum interrupter (5) to a desired level.
- the engagement between pallet contact (15) and moving contact (18) configured to keep vacuum interrupter (5) open preventing re-striking or re-igniting an arc between pallet contact (15) and moving contact (18) on separation from each other.
- the closing position is a position in which release of the moving contact (18) from the pallet contact (15) renders the primary circuit and secondary circuit inactive.
- the linkage mechanism collapses by its weight and by the contacts closing force of vacuum interrupter (5).
- the pallet pivot (21) and guiding pin (17) retract to their initial position passing through regions B and A closing the vacuum interrupter (5).
- the moving contact (18) moves down in the linear axis from its open position, the protrusion (22) interacting with the pallet base (14), said pallet base (14) pivoting about guiding pin (17) around pallet pivot (21) in region C allowing the moving contact (18) to move down.
- the moving contact (18) electrically engages with stationary contact (1) closing primary circuit, said moving contact (18) completing its stroke resulting in pallet base (14) returning to its initial position.
- the closing position is the intermediate position before initial position is achieved.
- the input motion can be transferred to vacuum interrupter to allow it to act as secondary circuit even in linear motion switch disconnectors while satisfying the breaking needs for a given switch disconnector.
- change in stroke of the vacuum interrupter is possible by changing the slot width in pulling lever as well as by changing the slot profile in Fixed Support.
- change in contact velocity of vacuum interrupter is possible by changing the length of scissor linkages.
- the opening of vacuum interrupter is in the same direction as the motion of moving contact which nullifies the possibility of damaging/twisting of VI moving stem.
- the switch disconnector in RM6 Ring Main Unit has a linear contact movement and the new design for the secondary or parallel circuit is suitable considering its enclosure size.
- Other breaker and switch disconnectors like Flusarc also have the potential to implement the above design.
- the linkage mechanism can also be made suitable for a switch disconnector with rotary contacts.
- additional dampers could be provided to let the protrusion (22) and pallet contact be connected.
- a torsion spring could be provided to have a push back force.
- the present invention may be added as a subassembly to the existing switch disconnector.
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Claims (13)
- Système de rupture de shunt comprenant :un circuit primaire constitué d'un contact stationnaire (1) et d'un contact mobile (18), ledit contact stationnaire (1) étant connecté à une barre omnibus entrante, et ledit contact mobile (18) étant connecté à une barre omnibus sortante ;un circuit secondaire constitué d'un interrupteur sous vide (5) électriquement connecté au contact stationnaire (1) sur une borne (12) avec un moyen de connexion approprié (4) ;un mécanisme à tringlerie comprenant une multiplicité de moyens formant tringlerie supportés sur un support de tringlerie (6) ayant des moyens formant tringlerie supérieure (8) connectée à une broche de traction (7) à sa première extrémité et des moyens formant tringlerie inférieure (10) à sa seconde extrémité à l'aide de broches coulissantes (9) capables de coulisser dans des fentes ménagées dans le support de tringlerie (6), la seconde extrémité des moyens formant tringlerie inférieure (10) étant connectés par une broche stationnaire (11) placée de manière fixe dans un évidement ménagé dans un support fixe (19),caractérisé en ce queun collier (3), configuré pour passer à travers un perçage dans le support de tringlerie (6), est connecté aux moyens formant tringlerie inférieure (10) avec la broche stationnaire (11) à une première extrémité du collier et une extrémité de contact mobile (13) de l'interrupteur sous vide (5) à une seconde extrémité du collier,l'extrémité de contact mobile (13) est connectée électriquement à un contact à palette (15) au moyen d'un fil flexible (20), ledit contact à palette (15) coopérant avec une projection (22) qui se projette depuis un bras du contact mobile (18) et comprenant une première région profilée (D) pour coopérer avec une seconde région profilée (E) du contact mobile (18).
- Système de rupture de shunt selon la revendication 1, dans lequel le support fixe (19), qui comprend une fente en "F" inversé guidant une broche de guidage (17), une broche de traction (7) et une base de palette (14) en lui-même, est amené à supporter le mécanisme à tringlerie et isoler les parties actives vis-à-vis de la terre/du réservoir au plus proche et d'autres conducteurs de phase.
- Système de rupture de shunt selon l'une quelconque des revendications précédentes, dans lequel le support fixe (19) comprend la base de palette (14) avec le contact à palette (15) fixé rigidement à celle-ci, ledit support fixe (19) ayant une première région (A), une seconde région (B) et une troisième région (C) comprise dans la fente en "F" inversé du support fixe (19).
- Système de rupture de shunt selon l'une quelconque des revendications précédentes, dans lequel la broche de guidage (17), configurée pour passer à travers un levier de traction (16), est connectée à la base de palette (14) aux deux extrémités, ledit levier de traction (16) comprenant une troisième région profilée (F) pour coopérer avec la broche de guidage (17).
- Système de rupture de shunt selon l'une quelconque des revendications précédentes, dans lequel le mécanisme à tringlerie conçu pour actionner le contact mobile (18) occupe quatre positions qui sont une position d'ouverture, et une position de déconnexion, une position de séparation et une position de fermeture, ledit contact mobile (18) occupant une position initiale précédant lesdites quatre positions.
- Système de rupture de shunt selon la revendication 5, dans lequel, dans la position initiale, le circuit primaire reste fermé, le circuit secondaire est inactif, et l'interrupteur sous vide (5) est en condition fermée.
- Système de rupture de shunt selon la revendication 5, dans lequel la position d'ouverture est une position pour connexion entre la projection (22) et le contact à palette (15) quand le contact mobile (18) est connecté électriquement au contact à palette (15) pour établir le circuit secondaire à côté du circuit primaire, le contact mobile (18) se déplaçant verticalement vers le haut permettant à la seconde région profilée (E) de coopérer avec la première région profilée (D) et la broche de guidage (17) qui est connectée à la base de palette (14) coopère avec la troisième région profilée (F) du levier de traction (16) et ne transfère aucun mouvement à l'interrupteur sous vide (5) avec pour résultat que l'interrupteur sous vide (5) est dans la position fermée.
- Système de rupture de shunt selon la revendication 5, dans lequel la position de déconnexion est une position dans laquelle le contact mobile (18) quitte le contact stationnaire (1) en amenant le circuit primaire à devenir inactif et le courant à s'écouler uniquement à travers le circuit secondaire, la broche de guidage (17) se déplace dans la troisième région profilée (F) du levier de traction (16) et la première région (A) de la fente en "F" inversé du support fixe (19) ne transfère aucun mouvement à l'interrupteur sous vide (5) avec pour résultat que l'interrupteur sous vide (5) est dans la position fermée, ladite broche de guidage (17), lorsqu'elle atteint une distance électrique suffisante, est attachée au levier de traction (16), et la broche de traction (7) contrainte avec le levier de traction (16) tire le support de tringlerie (6) pour attacher le collier (3) à celui-ci.
- Système de rupture de shunt selon la revendication 8, dans lequel la broche de guidage (17) et un pivot de palette (21) qui se déplace concurremment dans la première région (A) de la fente en "F" inversé du support fixe (19), ensemble avec la base de palette (14), actionne l'interrupteur sous vide (5) avec pour résultat une coupure de courant dans le circuit secondaire, et le support de tringlerie (6) engage le collier (3) et le contact mobile (18), ledit contact s'ouvrant à la moitié de la vitesse par comparaison au contact mobile (18).
- Système de rupture de shunt selon la revendication 9, dans lequel le rapport de la longueur des moyens formant tringlerie supérieure (8) et des moyens formant tringlerie inférieure (10) est modifié sur la base d'un taux désiré, d'une course désirée ou d'une vitesse désirée requise pour ouverture du contact mobile (18).
- Système de rupture de shunt selon la revendication 5, dans lequel la position de séparation est une position dans laquelle la broche de guidage (17) et le pivot de palette (21) coopèrent avec la seconde région (B) de la fente en "F" inversé du support fixe (19) tout en réduisant la vitesse de l'interrupteur sous vide (5) à un niveau désiré, l'engagement entre le contact à palette (15) et le contact mobile (18) étant configuré pour garder l'interrupteur sous vide (5) ouvert en empêchant le re-claquage ou le ré-allumage d'un arc entre le contact à palette (15) et le contact mobile (18) lorsqu'ils se séparent l'un de l'autre.
- Système de rupture de shunt selon la revendication 5, dans lequel la position de fermeture, qui est une position intermédiaire avant d'atteindre la position initiale, est une position dans laquelle un relâchement du contact mobile (18) depuis le contact à palette (15) rend le circuit primaire et le circuit secondaire inactifs, le mécanisme à tringlerie s'effondrant sous son poids et sous la force de fermeture des contacts de l'interrupteur sous vide (5) ; le pivot de palette (21) et la tige de guidage (17) se rétractent à leur position initiale en passant à travers la seconde région (B) et la première région (A) de la fente en "A" inversé du support fixe (19) en fermant l'interrupteur sous vide (5).
- Système de rupture de shunt selon la revendication 12, dans lequel le contact mobile (18) se déplace vers le bas dans l'axe linéaire depuis sa position ouverte, la projection (22) coopérant avec la base de palette (14), ladite base de palette (14) pivotant autour de la broche de guidage (17) autour du pivot de palette (21) dans la troisième région (C) de la fente en "F" inversé du support fixe (19) en permettant au contact mobile (18) de se déplacer vers le bas ; ledit contact mobile (18) engageant électriquement le contact stationnaire (1) et fermant le circuit primaire, ledit contact mobile (18) achevant sa course avec pour résultat que la base de palette (14) retourne à sa position d'origine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15305036.4A EP3046129B1 (fr) | 2015-01-15 | 2015-01-15 | Système de rupture de shunt |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15305036.4A EP3046129B1 (fr) | 2015-01-15 | 2015-01-15 | Système de rupture de shunt |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3046129A1 EP3046129A1 (fr) | 2016-07-20 |
EP3046129B1 true EP3046129B1 (fr) | 2019-09-11 |
Family
ID=52358731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP15305036.4A Active EP3046129B1 (fr) | 2015-01-15 | 2015-01-15 | Système de rupture de shunt |
Country Status (1)
Country | Link |
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EP (1) | EP3046129B1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3121267A1 (fr) | 2021-03-24 | 2022-09-30 | Schneider Electric Industries Sas | Système de coupure d’un appareil électrique |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2722912B1 (fr) * | 1994-07-20 | 1996-09-13 | Schneider Electric Sa | Interrupteurs electriques moyenne tension |
DE10047032C2 (de) | 2000-09-22 | 2003-12-04 | Elpro Gmbh Berlin Industriehol | Mittelspannungs-Trennermessen-Lasttrennschalter mit Vakuum-Schaltkammern |
FR2937786B1 (fr) | 2008-10-29 | 2010-12-24 | Areva T & D Sa | Interrupteur de courant sur une ligne electrique comprenant une ampoule a vide |
DE102010045233B4 (de) * | 2010-09-10 | 2012-05-24 | Siemens Aktiengesellschaft | Lasttrennschalter |
FR2970809B1 (fr) | 2011-01-25 | 2013-02-22 | Schneider Electric Ind Sas | Dispositif de coupure moyenne tension comprenant une ampoule a vide |
-
2015
- 2015-01-15 EP EP15305036.4A patent/EP3046129B1/fr active Active
Non-Patent Citations (1)
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EP3046129A1 (fr) | 2016-07-20 |
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