EP0406794B1 - High or middle tension circuit breaker - Google Patents
High or middle tension circuit breaker Download PDFInfo
- Publication number
- EP0406794B1 EP0406794B1 EP90112672A EP90112672A EP0406794B1 EP 0406794 B1 EP0406794 B1 EP 0406794B1 EP 90112672 A EP90112672 A EP 90112672A EP 90112672 A EP90112672 A EP 90112672A EP 0406794 B1 EP0406794 B1 EP 0406794B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit breaker
- contact
- moving
- fixed
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005422 blasting Methods 0.000 claims abstract 2
- 239000000872 buffer Substances 0.000 claims abstract 2
- 238000009413 insulation Methods 0.000 claims abstract 2
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000007664 blowing Methods 0.000 description 11
- 239000011810 insulating material Substances 0.000 description 7
- 229910018503 SF6 Inorganic materials 0.000 description 4
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 4
- 229960000909 sulfur hexafluoride Drugs 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 241000722921 Tulipa gesneriana Species 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/901—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism making use of the energy of the arc or an auxiliary arc
- H01H33/903—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism making use of the energy of the arc or an auxiliary arc and assisting the operating mechanism
Definitions
- the present invention relates to a circuit breaker usable in high or medium voltage, in which the breaking chamber is filled with dielectric gas such as sulfur hexafluoride (SF6), and in which the energy of the arc is used, thanks to the increase in pressure which it gives to the gas, on the one hand to blow the arc which is established at the separation of the arcing contacts and, on the other hand, to provide additional energy to the circuit breaker opening mechanism.
- dielectric gas such as sulfur hexafluoride (SF6)
- circuit breaker with a pair of additional contacts capable of generating, when the circuit breaker opens, a secondary arc.
- a disadvantage of the circuit breaker of the prior art is the weighting of the movable assembly by the presence of one of the secondary contacts. This increase results in the need to provide the circuit breaker with an increased power control mechanism, which increases the cost price of the device.
- An object of the invention is to provide a circuit breaker with secondary contacts, in which the mobile assembly is not weighed down.
- Another object of the invention is to produce a compact circuit breaker, therefore of reduced construction cost price and whose maintenance costs are reduced.
- Document DE-A-2403300 discloses a circuit breaker provided with secondary contacts; one of them, the furthest from the blowing nozzle, is integral with the mobile assembly; the other is semi-mobile relative to the fixed crew.
- a circuit breaker has a drawback: the length of the secondary arc is not limited; as a result, during an opening operation of the circuit breaker, the arc lengthens so too large, which has the effect of overheating the surrounding gas; this excessive heating can prevent the circuit-breaker from carrying out a rapid open-close-open cycle (OFO), because the gas, after a first opening, does not have time to cool down sufficiently; as a result, the medium remains very ionized, and the second opening maneuver may fail, the secondary arc not extinguishing when the current crosses zero.
- OFO open-close-open cycle
- An additional object of the present invention is to provide a circuit breaker which does not have the aforementioned drawbacks.
- Document EP-A-0 302 390 discloses an arc self-blowing circuit breaker with a blowing piston placed in a blowing volume comprising, in addition to the main contacts and arcing contacts, a first and a second secondary contact, arranged in a volume separate from the blowing volume, the second secondary contact being semi-mobile relative to the fixed assembly of the circuit breaker, having a source of energy of its own for its displacement during the tripping operation of the circuit breaker, this contact being provided with means for giving it a stroke less than that of the mobile assembly.
- An object of the invention is to provide a simpler circuit breaker with such high efficiency.
- circuit breaker as defined by the main claim.
- circuit breaker as defined by the main claim.
- secondary claims Regarding features of a preferred implementation of this circuit breaker reference is made to the secondary claims.
- the reference 1 designates a cylindrical envelope of axis xx, in insulating material such as ceramic, delimiting an interior volume 2 filled with a gas with good dielectric properties, such as sulfur hexafluoride (SF6) , under a pressure of a few bars.
- a gas with good dielectric properties such as sulfur hexafluoride (SF6)
- the elements of the switching chamber are of revolution around the axis xx, which gives the device compactness and ease of assembly and maintenance.
- the circuit breaker comprises a fixed main contact 3 consisting of fingers arranged in a tulip; this contact is surrounded by a corona hood 4.
- the main contact 3 is associated with a fixed arcing contact constituted by a metal tube 5 terminated by a piece 5A of material resistant to the effects of the arcing such as an alloy based on tungsten.
- the two aforementioned fixed contacts are electrically connected to a first outlet not shown.
- the moving element comprises a metal tube 6, terminated by a wearing part 6A, constituting the moving arcing contact.
- This tube is connected to a rod 8 made of insulating material, used for tripping and reclosing operations of the circuit breaker.
- the moving element further comprises a tube 9, of axis xx, having at one end a portion 9A of narrowed diameter which constitutes the moving main contact. This portion also serves as a support for a blowing nozzle 10, made of insulating material such as polytetrafluoroethylene.
- the tube 6 and the tube 9 are joined by an insulating ring 11 pierced with large orifices 12.
- the tube 6 and the tube 9 define an annular volume V1 constituting the blowing volume of the arc.
- This volume is closed, on the side opposite to the nozzle 10, by a first piston 14, fixed, made of insulating material and maintained by a tube 15, coaxial with the tube 9 and connected to a second socket, not shown, of the circuit breaker.
- the piston 14 is pierced with orifices 16 which can be closed off by a washer 17 constituting a differential valve.
- the seal between the piston 14 and the tube 9 is obtained by means of a sliding annular seal 18.
- the tubes 15 and 6 delimit, to the right of the piston 14, a volume V2 of annular section, in which the secondary contacts are placed.
- This volume is closed by a second piston 20, made of insulating material, integral with the tube 6.
- This piston can slide in leaktight fashion along the tube 15 thanks to a dynamic seal 21.
- the piston 20 is pierced with orifices 21A which can be closed off by a washer 22 forming a valve.
- a first secondary contact closest to the blowing nozzle when the circuit breaker is in the open position (position in FIG. 3), consists of a tube 23, integral with the first piston 14 and therefore of the fixed assembly.
- This tube of axis xx, is terminated by a wear part 23A.
- This tube is electrically connected to the tube 15, for example by a metal crown 23B pierced with holes in the extension of the holes 16.
- the other secondary contact is a tube 24, terminated by a wearing part 24A.
- This tube coaxial with tube 23, and of smaller diameter than the latter in order to be able to engage therein in the engaged position of the circuit breaker, is fixed to an annular metal block 25 which can slide freely around the tube 6. Sliding electrical contacts 26 allow a electrical contact between the tube 6 and the part 25.
- a spring 27 is disposed between the block 25 and the fixed piston 14; it is compressed when the circuit breaker is in the on position.
- the stroke of the block 25 is limited by a stop 28, forming an integral part of a tube 29 of insulating material which can slide along the tube 6 and which sheaths the latter 6 over part of its length; the role of the tube 29 will be explained later.
- Contact 24 is extended by a tube 24B made of insulating material (for example polytetrafluoroethylene), the role of which will appear below.
- insulating material for example polytetrafluoroethylene
- the assembly constituted by the block 25, the contact 24, the tube 29 and the contacts 26 can be qualified as semi-mobile since it can carry out, with respect to the mobile assembly, displacements of limited amplitude.
- another type of shock absorber can be used, for example a pneumatic shock absorber.
- the operating rod is moved, by the operating mechanism not shown, to the right of the figure.
- the main contacts 3 and 9A separate, and the current, switched to the arcing contacts, then passes through the tube 5, the tube 6, the contacts 26, the block 24, the secondary contact 23, the crown 23B and the tube 15.
- the secondary contact 24 comes to a standstill, the stop 28 coming into contact with the piston 14 via the shock absorber 30.
- the length of the secondary arc is limited, so that there is no fear of excessive heating of the gas of the volume V2, or deterioration of the parts delimiting this volume, by vagrancy of the secondary arc.
- the arc 50 is extinguished by the vigorous blowing coming from the volume V1 through the blowing nozzle 10.
- the various elements of the circuit breaker can be sized so that the main 50 and secondary 51 arcs appear at about the same time.
- the circuit breaker is of compact construction and its maintenance is easy. It finds applications in medium and high voltage networks.
Landscapes
- Circuit Breakers (AREA)
- Emergency Protection Circuit Devices (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Organic Insulating Materials (AREA)
- Electronic Switches (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
La présente invention est relative à un disjoncteur utilisable en haute ou moyenne tension, dans lequel la chambre de coupure est remplie de gaz diélectrique tel que l'hexafluorure de soufre (SF6), et dans lequel l'énergie de l'arc est utilisée, grâce à l'augmentation de pression qu'elle confère au gaz, d'une part pour souffler l'arc qui s'établit à la séparation des contacts d'arc et, d'autre part, pour apporter un complément d'énergie au mécanisme d'ouverture du disjoncteur.The present invention relates to a circuit breaker usable in high or medium voltage, in which the breaking chamber is filled with dielectric gas such as sulfur hexafluoride (SF6), and in which the energy of the arc is used, thanks to the increase in pressure which it gives to the gas, on the one hand to blow the arc which is established at the separation of the arcing contacts and, on the other hand, to provide additional energy to the circuit breaker opening mechanism.
Ces objectifs sont atteints par exemple en dotant le disjoncteur d'une paire de contacts supplémentaires capables de générer, lors de l'ouverture du disjoncteur, un arc secondaire.These objectives are achieved, for example, by providing the circuit breaker with a pair of additional contacts capable of generating, when the circuit breaker opens, a secondary arc.
Un disjoncteur de ce type a été décrit par exemple dans la demande de brevet allemand publiée N° 23 49 263.A circuit breaker of this type has been described, for example, in the published German patent application No. 23 49 263.
Un inconvénient du disjoncteur de l'art antérieur est l'alourdissement de l'équipage mobile par la présence d'un des contacts secondaires. Cet alourdissement entraîne la nécessité de doter le disjoncteur d'un mécanisme de commande de puissance accrue, ce qui augmente le prix de revient de l'appareil.A disadvantage of the circuit breaker of the prior art is the weighting of the movable assembly by the presence of one of the secondary contacts. This increase results in the need to provide the circuit breaker with an increased power control mechanism, which increases the cost price of the device.
Un but de l'invention est de réaliser un disjoncteur avec contacts secondaires, dans lequel l'équipage mobile n'est pas alourdi.An object of the invention is to provide a circuit breaker with secondary contacts, in which the mobile assembly is not weighed down.
Un autre but de l'invention est de réaliser un disjoncteur compact, donc de prix de revient à la construction réduit et dont les frais de maintenance sont réduits.Another object of the invention is to produce a compact circuit breaker, therefore of reduced construction cost price and whose maintenance costs are reduced.
On connaît, par le document DE-A-2403300, un disjoncteur muni de contacts secondaires; l'un d'eux, le plus éloigné de la buse de soufflage, est solidaire de l'équipage mobile; l'autre est semi-mobile par rapport à l'équipage fixe. Un tel disjoncteur présente un inconvénient: la longueur de l'arc secondaire n'est pas limitée; il en résulte qu'au cours d'une opération d'ouverture du disjoncteur, l'arc s'allonge de manière trop importante, ce qui a pour effet d'échauffer exagérément le gaz environnement; cet échauffement excessif peut empêcher la réalisation par le disjoncteur d'un cycle rapide ouverture-fermeture-ouverture (OFO), car le gaz, après une première ouverture, n'a pas le temps de se refroidir suffisamment; par suite, le milieu reste très ionisé, et la seconde manoeuvre d'ouverture peut échouer, l'arc secondaire ne s'éteignant pas au passage par zéro du courant.Document DE-A-2403300 discloses a circuit breaker provided with secondary contacts; one of them, the furthest from the blowing nozzle, is integral with the mobile assembly; the other is semi-mobile relative to the fixed crew. Such a circuit breaker has a drawback: the length of the secondary arc is not limited; as a result, during an opening operation of the circuit breaker, the arc lengthens so too large, which has the effect of overheating the surrounding gas; this excessive heating can prevent the circuit-breaker from carrying out a rapid open-close-open cycle (OFO), because the gas, after a first opening, does not have time to cool down sufficiently; as a result, the medium remains very ionized, and the second opening maneuver may fail, the secondary arc not extinguishing when the current crosses zero.
Un autre inconvénient d'un allongement excessif de l'arc est que ce dernier peut détériorer les parties qui l'entourent.Another drawback of excessive elongation of the arch is that the latter can deteriorate the parts which surround it.
Un but supplémentaire de la présente invention est de réaliser un disjoncteur qui ne présente pas les inconvénients précités.An additional object of the present invention is to provide a circuit breaker which does not have the aforementioned drawbacks.
On connaît, par le document EP-A-0 302 390, un disjoncteur à auto-soufflage d'arc avec un piston de soufflage placé dans un volume de soufflage comprenant, en plus des contacts principaux et des contacts d'arc, un premier et un second contacts secondaires, disposés dans un volume distinct du volume de soufflage, le second contact secondaire étant semi-mobile par rapport à l'ensemble fixe du disjoncteur, possédant une source d'énergie propre pour son déplacement lors de la manoeuvre de déclenchement du disjoncteur, ce contact étant muni d'un moyen pour lui conférer une course inférieure à celle de l'ensemble mobile.Document EP-A-0 302 390 discloses an arc self-blowing circuit breaker with a blowing piston placed in a blowing volume comprising, in addition to the main contacts and arcing contacts, a first and a second secondary contact, arranged in a volume separate from the blowing volume, the second secondary contact being semi-mobile relative to the fixed assembly of the circuit breaker, having a source of energy of its own for its displacement during the tripping operation of the circuit breaker, this contact being provided with means for giving it a stroke less than that of the mobile assembly.
Un but de l'invention est de réaliser un disjoncteur de construction plus simple avec une efficacité aussi grande.An object of the invention is to provide a simpler circuit breaker with such high efficiency.
Ces buts sont atteints par le disjoncteur tel qu'il est défini par la revendication principale. En ce qui concerne des caractéristiques d'une mise en oeuvre préférée de ce disjoncteur référence est faite aux revendications secondaires.These objects are achieved by the circuit breaker as defined by the main claim. Regarding features of a preferred implementation of this circuit breaker reference is made to the secondary claims.
L'invention est précisée maintenant par la description d'un mode préféré de réalisation, en référence au dessin annexé dans lequel:
- la figure 1 est une vue en demi-coupe axiale d'un disjoncteur selon l'invention, représenté en position enclenchée,
- la figure 2 est une vue en demi-coupe axiale du même disjoncteur au cours d'une manoeuvre de déclenchement.
- la figure 3 est une vue en demi-coupe axiale du même disjoncteur en fin de manoeuvre de déclenchement.
- FIG. 1 is a view in axial half-section of a circuit breaker according to the invention, shown in the latched position,
- Figure 2 is an axial half-sectional view of the same circuit breaker during a tripping operation.
- Figure 3 is an axial half-sectional view of the same circuit breaker at the end of tripping operation.
Dans la figure 1, la référence 1 désigne une enveloppe cylindrique d'axe xx, en matériau isolant tel que la céramique, délimitant un volume intérieur 2 rempli d'un gaz à bonnes propriétés diélectriques, tel que l'hexafluorure de soufre (SF6), sous une pression de quelques bars.In FIG. 1, the reference 1 designates a cylindrical envelope of axis xx, in insulating material such as ceramic, delimiting an
Les éléments de la chambre de coupure sont de révolution autour de l'axe xx, ce qui confère à l'appareil compacité et facilité de montage et d'entretien.The elements of the switching chamber are of revolution around the axis xx, which gives the device compactness and ease of assembly and maintenance.
Le disjoncteur comprend un contact principal fixe 3 constitué de doigts disposés en tulipe; ce contact est entouré par un capot pare-effluves 4. Le contact principal 3 est associé à un contact d'arc fixe constitué par un tube métallique 5 terminé par une pièce 5A en matériau résistant aux effets de l'arc tel qu'un alliage à base de tungstène. Les deux contacts fixes précités sont reliés électriquement à une première prise de courant non représentée.The circuit breaker comprises a fixed
L'équipage mobile comprend un tube métallique 6, terminé par une pièce d'usure 6A, constituant le contact d'arc mobile. Ce tube est relié à une tringle 8 en matériau isolant, utilisée pour les manoeuvres de déclenchement et réenclenchement du disjoncteur.The moving element comprises a
L'équipage mobile comprend en outre un tube 9, d'axe xx, présentant à une extrémité une portion 9A de diamètre rétréci qui constitue le contact principal mobile. Cette portion sert également de support à une buse de soufflage 10, réalisée en matériau isolant tel que le polytétrafluoroéthylène. Le tube 6 et le tube 9 sont solidarisés par une couronne isolante 11 percée de larges orifices 12. Le tube 6 et le tube 9 délimitent un volume V1 annulaire constituant le volume de soufflage de l'arc.The moving element further comprises a
Ce volume est fermé, du côté opposé à la buse 10, par un premier piston 14, fixe, réalisé en matériau isolant et maintenu par un tube 15, coaxial au tube 9 et relié à une seconde prise, non représentée, du disjoncteur. Le piston 14 est percé d'orifices 16 pouvant être obturés par une rondelle 17 constituant un clapet différentiel.
L'étanchéité entre le piston 14 et le tube 9 est obtenue au moyen d'un joint annulaire glissant 18.This volume is closed, on the side opposite to the
The seal between the
La liaison électrique entre le tube 9 et le tube 15 est assurée par des contacts électriques glissants 19.The electrical connection between the
Les tubes 15 et 6 délimitent, à la droite du piston 14, un volume V2 de section annulaire, dans lequel sont placés les contacts secondaires. Ce volume est fermé par un second piston 20, en matériau isolant, solidaire du tube 6. Ce piston peut coulisser de manière étanche le long du tube 15 grâce à un joint dynamique 21. Le piston 20 est percés d'orifices 21A pouvant être obturés par une rondelle 22 formant clapet.The
Un premier contact secondaire, le plus proche de la buse de soufflage lorsque le disjoncteur est en position d'ouverture (position de la figure 3), est constitué d'un tube 23, solidaire du premier piston 14 et donc de l'ensemble fixe. Ce tube, d'axe xx, est terminé par une pièce d'usure 23A. Ce tube est électriquement relié au tube 15, par exemple par une couronne métallique 23B percée de trous dans le prolongement des trous 16.A first secondary contact, closest to the blowing nozzle when the circuit breaker is in the open position (position in FIG. 3), consists of a
L'autre contact secondaire, le plus éloigné de la buse de soufflage lorsque le disjoncteur est en position ouverte, est un tube 24, terminé par une pièce d'usure 24A. Ce tube, coaxial au tube 23, et de diamètre inférieur à ce dernier pour pouvoir s'y engager en position enclenchée du disjoncteur, est fixé à un bloc métallique annulaire 25 pouvant glisser librement autour du tube 6. Des contacts électriques glissants 26 permettent un contact électrique entre le tube 6 et la pièce 25.The other secondary contact, the farthest from the blowing nozzle when the circuit breaker is in the open position, is a
Un ressort 27 est disposé entre le bloc 25 et le piston fixe 14; il est comprimé lorsque le disjoncteur est en position enclenchée. La course du bloc 25 est limitée par une butée 28, faisant partie intégrante d'un tube 29 en matériau isolant pouvant glisser le long du tube 6 et qui gaine ce dernier 6 sur une partie de sa longueur; le rôle du tube 29 sera expliqué plus loin.A
Le contact 24 est prolongé par un tube 24B en matériau isolant (par exemple polytétrafluoroéthylène) dont le rôle apparaîtra dans la suite.
L'ensemble constitué par le bloc 25, le contact 24, le tube 29 et les contacts 26 peut être qualifié de semi-mobile puisqu'il peut effectuer, par rapport à l'ensemble mobile, des déplacements d'amplitude limitée.The assembly constituted by the
Un amortisseur 30, par exemple en matériau élastomère, permet d'amortir le mouvement de l'ensemble semi-mobile. On peut, en variante, utiliser un autre type d'amortisseur, par exemple un amortisseur pneumatique.A
Le fonctionnement du disjoncteur est décrit maintenant.The operation of the circuit breaker is now described.
Lorsque la ligne dans laquelle est inséré le disjoncteur fonctionne normalement, le disjoncteur est en position enclenchée (figure 1) et le courant nominal traverse les doigts 3, le tube 9A-9, les contacts 19 et le tube 15.When the line in which the circuit breaker is inserted operates normally, the circuit breaker is in the on position (Figure 1) and the rated current passes through the
Pour effectuer l'ouverture du disjoncteur, par exemple sur défaut, la tringle de manoeuvre est déplacée, par le mécanisme de manoeuvre non représenté, vers la droite de la figure. Les contacts principaux 3 et 9A se séparent, et le courant, commuté sur les contacts d'arc, passe alors par le tube 5, le tube 6, les contacts 26, le bloc 24, le contact secondaire 23, la couronne 23B et le tube 15.To open the circuit breaker, for example on a fault, the operating rod is moved, by the operating mechanism not shown, to the right of the figure. The
Lorsque les contacts d'arc se séparent un arc 50 jaillit entre les extrémités 5A et 6A. La pression dans le volume V1 augmente en raison d'une part de l'effet mécanique dû au déplacement relatif du piston 14 et du cylindre 9 et d'autre part en raison de l'élévation de la température du gaz échauffé par l'arc. Le clapet différentiel 17 ferme le volume V1 car la pression dans ce volume est supérieure à celle du volume V2. Le trajet du courant reste le même, à ceci près qu'il traverse l'arc 50.When the arcing contacts separate an
Pendant cette phase, l'ensemble semi-mobile, poussé par la détente du ressort, se déplace avec l'ensemble mobile.During this phase, the semi-mobile assembly, pushed by the rebound of the spring, moves with the mobile assembly.
La course du tube 6 se poursuivant, il arrive que les contacts secondaires 23A et 24A se séparent; un arc 51 jaillit entre eux; son amorçage est facilité par la présence du tube 24B en PTFE grâce à la décomposition qui favorise l'ionisation du gaz. La pression dans le volume V2 augmente rapidement et apporte ainsi une contribution importante à l'énergie nécessaire à la manoeuvre d'ouverture du disjoncteur. Au cours de cette phase, le clapet 22 reste fermé ainsi que le clapet 17, puisque la surface du clapet 17 est bien supérieure à la somme des surfaces des orifices 16.The stroke of the
Après une course de longueur limitée, le contact secondaire 24 s'immobilise, la butée 28 venant en contact avec le piston 14 par l'intermédiaire de l'amortisseur 30.After a stroke of limited length, the
Grâce à cette disposition, la longueur de l'arc secondaire est limitée, de sorte qu'on ne craint ni échauffement excessif du gaz du volume V2, ni détérioration des pièces délimitant ce volume, par vagabondage de l'arc secondaire.Thanks to this arrangement, the length of the secondary arc is limited, so that there is no fear of excessive heating of the gas of the volume V2, or deterioration of the parts delimiting this volume, by vagrancy of the secondary arc.
Après l'arrêt du contact secondaire, l'équipage mobile poursuit sa course (figure 3).After the secondary contact has stopped, the moving part continues its course (Figure 3).
Au premier passage par zéro du courant, l'arc 50 est éteint par le soufflage énergique provenant du volume V1 à travers la buse de soufflage 10.At the first zero crossing of the current, the
On pourra dimensionner les divers éléments du disjoncteur pour que les arcs principal 50 et secondaire 51 apparaîssent à peu près en même temps.The various elements of the circuit breaker can be sized so that the main 50 and secondary 51 arcs appear at about the same time.
Le disjoncteur est de construction compacte et sa maintenance est aisée. Il trouve des applications dans les réseaux à moyenne et haute tension.The circuit breaker is of compact construction and its maintenance is easy. It finds applications in medium and high voltage networks.
Claims (4)
- A circuit breaker for high and medium tension including insulation by means of a dielectric gas and puffer arc blasting, the circuit breaker comprising a gastight insulating casing, containing (1):
a fixed assembly comprising, in particular, a fixed main contact (3) and a fixed arcing contact (5, 5A);
a moving assembly driven by a drive rod and including, in particular, a moving main contact (9, 9A) and a moving arcing contact (6, 6A);
a first blast volume (V1) extended by a blast nozzle (10);
a blast piston (14); and
first (23, 23A) and second (24, 24A) secondary contacts disposed inside a second volume (V2) and designed to strike a secondary arc;
in which the first secondary contact (23, 23A) is fixed relative to the fixed assembly, the second secondary contact (24, 24A) being semi-moving relative to the moving assembly, possessing its own source of energy (27) for displacing it during a circuit breaker disengagement operation, and being provided with means (28) for conferring a shorter stroke thereto than the stroke of the moving assembly, the circuit breaker being characterized in that the second secondary contact (24, 24A) is electrically linked to the moving arcing contact (6A) by a metal support (25) sliding along the moving assembly (6, 9). - A circuit breaker according to claim 1, characterized in that said second secondary contact (24, 24A) is the farther of the secondary contacts from the blast nozzle (10) when the circuit breaker is in the open position.
- A circuit breaker according to claim 1 or 2, characterized in that said source of energy is a spring (27) put into compression during an engagement operation of the circuit breaker.
- A circuit breaker according to any one of claims 1 to 3, characterized in that the means for limiting the stroke of the second secondary contact is constituted by an abutment (28) coming into contact with the fixed piston (14).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8908975 | 1989-07-04 | ||
FR8908975A FR2649531B1 (en) | 1989-07-04 | 1989-07-04 | HIGH OR MEDIUM VOLTAGE CIRCUIT BREAKER |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0406794A1 EP0406794A1 (en) | 1991-01-09 |
EP0406794B1 true EP0406794B1 (en) | 1995-06-28 |
Family
ID=9383452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90112672A Expired - Lifetime EP0406794B1 (en) | 1989-07-04 | 1990-07-03 | High or middle tension circuit breaker |
Country Status (11)
Country | Link |
---|---|
US (1) | US4996399A (en) |
EP (1) | EP0406794B1 (en) |
JP (1) | JP2577116B2 (en) |
CN (1) | CN1018404B (en) |
AT (1) | ATE124568T1 (en) |
BR (1) | BR9003160A (en) |
CA (1) | CA2020281C (en) |
DE (1) | DE69020441T2 (en) |
DK (1) | DK0406794T3 (en) |
ES (1) | ES2074103T3 (en) |
FR (1) | FR2649531B1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2661550B1 (en) * | 1990-04-26 | 1992-06-12 | Alsthom Gec | HIGH VOLTAGE CIRCUIT BREAKER WITH SERIES ARC. |
FR2720188B1 (en) * | 1994-05-19 | 1996-06-14 | Gec Alsthom T & D Sa | Reduced auto-compression circuit breaker. |
FR2725844B1 (en) * | 1994-10-12 | 1996-12-13 | Schneider Electric Sa | HIGH VOLTAGE ELECTRICAL APPARATUS WITH GAS INSULATION EQUIPPED WITH AN ARC SHORT CIRCUIT DEVICE |
DE69525768T2 (en) * | 1994-12-08 | 2002-10-24 | Exxonmobil Chemical Patents Inc., Baytown | BIODEGRADABLE SYNTHETIC BRANCHED ESTERS AND LUBRICANT MADE THEREOF |
FI111711B (en) * | 1997-04-11 | 2003-09-15 | Fortum Oil & Gas Oy | Especially polyol and complex esters for use with fluorinated coolants |
FR2783088B1 (en) * | 1998-09-09 | 2000-10-13 | Alstom Technology | SWITCH WITH A LONG-TERM INSERTION RESISTOR INSERTION SYSTEM |
FR2783348B1 (en) * | 1998-09-15 | 2000-10-13 | Alstom Technology | METHOD OF DISCRIMINATION BETWEEN AN INTERNAL ARC AND A CUT-OUT ARC IN A MEDIUM OR HIGH VOLTAGE CIRCUIT BREAKER |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2666118A (en) * | 1950-06-29 | 1954-01-12 | Westinghouse Electric Corp | Circuit interrupter |
DE2403300A1 (en) * | 1974-01-24 | 1975-07-31 | Bbc Brown Boveri & Cie | Cct. breaker with sulphur hexafluoride quenching - has commutator in arc burner space for arc current shifting |
FR2575595B1 (en) * | 1985-01-02 | 1987-01-30 | Alsthom Atlantique | HIGH VOLTAGE CIRCUIT BREAKER WITH COMPRESSED GAS |
JP2528100B2 (en) * | 1986-07-08 | 1996-08-28 | 株式会社日立製作所 | Patch type gas circuit breaker |
FR2610763B1 (en) * | 1987-02-09 | 1989-04-28 | Alsthom | LOW ENERGY MANEUVER CIRCUIT BREAKER |
FR2619246B1 (en) * | 1987-08-03 | 1989-11-17 | Alsthom | HIGH OR MEDIUM VOLTAGE CIRCUIT BREAKER UNDER PRESSURE WITH CURING ENERGY TAKEN FROM THE ARC |
-
1989
- 1989-07-04 FR FR8908975A patent/FR2649531B1/en not_active Expired - Fee Related
-
1990
- 1990-07-02 JP JP2175153A patent/JP2577116B2/en not_active Expired - Lifetime
- 1990-07-03 AT AT90112672T patent/ATE124568T1/en not_active IP Right Cessation
- 1990-07-03 CA CA002020281A patent/CA2020281C/en not_active Expired - Fee Related
- 1990-07-03 DK DK90112672.2T patent/DK0406794T3/en active
- 1990-07-03 ES ES90112672T patent/ES2074103T3/en not_active Expired - Lifetime
- 1990-07-03 DE DE69020441T patent/DE69020441T2/en not_active Expired - Fee Related
- 1990-07-03 EP EP90112672A patent/EP0406794B1/en not_active Expired - Lifetime
- 1990-07-03 US US07/547,276 patent/US4996399A/en not_active Expired - Fee Related
- 1990-07-04 CN CN90103340A patent/CN1018404B/en not_active Expired
- 1990-07-04 BR BR909003160A patent/BR9003160A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US4996399A (en) | 1991-02-26 |
DE69020441T2 (en) | 1995-11-16 |
DE69020441D1 (en) | 1995-08-03 |
EP0406794A1 (en) | 1991-01-09 |
JPH0343924A (en) | 1991-02-25 |
ES2074103T3 (en) | 1995-09-01 |
FR2649531A1 (en) | 1991-01-11 |
CN1048628A (en) | 1991-01-16 |
BR9003160A (en) | 1991-08-27 |
ATE124568T1 (en) | 1995-07-15 |
JP2577116B2 (en) | 1997-01-29 |
CN1018404B (en) | 1992-09-23 |
FR2649531B1 (en) | 1995-11-10 |
DK0406794T3 (en) | 1995-10-02 |
CA2020281A1 (en) | 1991-01-05 |
CA2020281C (en) | 1994-02-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2596575A1 (en) | PRESSURE DIELECTRIC GAS CIRCUIT BREAKER | |
EP0367072B1 (en) | Gas-blast circuit interrupter for highpotential | |
EP0406794B1 (en) | High or middle tension circuit breaker | |
CA2035688C (en) | Self-extinguishing high or medium voltage circuit breaker | |
FR2576144A1 (en) | HIGH VOLTAGE, COMPRESSED GAS, LOW-ENERGY CIRCUIT BREAKER | |
EP0359224B1 (en) | High-tension circuit breaker using a dielectric gas for blasting | |
EP0334181B1 (en) | High-tension switch with a reduced driving energy | |
CA2006934C (en) | High and medium voltage airblast circuit breaker | |
EP0239932A1 (en) | High-tension gas blast circuit breaker | |
FR2576143A1 (en) | HIGH-VOLTAGE, COMPRESSED GAS, CIRCUIT BREAKER ASSISTED BY THE ARC THERMAL EFFECT AND WITH DOUBLE MOTION | |
EP0398211A1 (en) | High tension gas blast circuit breaker | |
EP0450567B1 (en) | High- or medium voltage circuit breaker with abutting arcing contacts | |
CA2017127C (en) | High current rating medium voltage circuit-breaker | |
EP0759629A1 (en) | Circuit breaker with closing resistor and insertion device | |
EP0400523B1 (en) | High tension gas blast circuit-breaker | |
FR2646013A1 (en) | FLOW GAS MEDIUM VOLTAGE CIRCUIT BREAKER | |
FR2535518A1 (en) | CUTTING CHAMBER FOR GAS CIRCUIT BREAKER | |
FR2575596A1 (en) | Compressed gas circuit breaker with dual thermodynamic cutout and a plurality of blasting directions | |
FR2720544A1 (en) | Electrodynamic high voltage circuit breaker | |
CH689473A5 (en) | high arc voltage circuit breaker. | |
FR2657459A1 (en) | High-voltage circuit breaker with closing resistor | |
FR2705494A1 (en) | Circuit breaker with operation assisted by electrodynamic means |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19910624 |
|
17Q | First examination report despatched |
Effective date: 19931025 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19950628 |
|
REF | Corresponds to: |
Ref document number: 124568 Country of ref document: AT Date of ref document: 19950715 Kind code of ref document: T |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19950731 |
|
REF | Corresponds to: |
Ref document number: 69020441 Country of ref document: DE Date of ref document: 19950803 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2074103 Country of ref document: ES Kind code of ref document: T3 |
|
ITF | It: translation for a ep patent filed | ||
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19950904 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19970616 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19970620 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19970622 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19970623 Year of fee payment: 8 Ref country code: DK Payment date: 19970623 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19970624 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19970627 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19970630 Year of fee payment: 8 Ref country code: AT Payment date: 19970630 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 19970718 Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980703 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980703 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980704 Ref country code: ES Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES Effective date: 19980704 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980731 Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980731 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980731 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980731 |
|
BERE | Be: lapsed |
Owner name: S.A. GEC ALSTHOM Effective date: 19980731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990201 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19980703 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
EUG | Se: european patent has lapsed |
Ref document number: 90112672.2 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990331 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 19990201 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990501 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20001009 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050703 |