EP0308847A1 - Rotating arc magnetic blast coil for the contact element of an electrical switch - Google Patents
Rotating arc magnetic blast coil for the contact element of an electrical switch Download PDFInfo
- Publication number
- EP0308847A1 EP0308847A1 EP88115314A EP88115314A EP0308847A1 EP 0308847 A1 EP0308847 A1 EP 0308847A1 EP 88115314 A EP88115314 A EP 88115314A EP 88115314 A EP88115314 A EP 88115314A EP 0308847 A1 EP0308847 A1 EP 0308847A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- winding
- bowl
- coil according
- magnetic
- 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
Links
- 238000004804 winding Methods 0.000 claims abstract description 36
- 239000004020 conductor Substances 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- 239000012212 insulator Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims 11
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005520 electrodynamics Effects 0.000 description 2
- 101100008046 Caenorhabditis elegans cut-2 gene Proteins 0.000 description 1
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- GXDVEXJTVGRLNW-UHFFFAOYSA-N [Cr].[Cu] Chemical compound [Cr].[Cu] GXDVEXJTVGRLNW-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 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
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
-
- 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
- H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H33/185—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the contacts
Definitions
- the present invention relates to a magnetic blow coil by rotation of the arc for the contact element of an electric switch, such as a contactor or circuit breaker.
- the invention is applicable, in particular in devices of this type used for medium voltages, from 3 to 40 kV.
- a generally cylindrical conductive cuvette connected to a current inlet, a winding arranged in said cuvette and one end of which is connected to the cuvette, to produce a magnetic field along the axis of the cup, a conductive core connected to the other end of the winding and located in the center of the winding, as well as a cut-off contact, placed in front of the coil, relative to said cup, in the magnetic field that it produces and electrically connected to said core.
- Specific means must be provided to prevent the coil from exploding under the effect of a short-circuit current when the switch is opened.
- the invention aims to provide simple and easy means to implement to give the winding of the coil a high mechanical strength. Incidentally, these means make it possible to establish in a simple and reliable manner the electrical contacts with the two ends of the winding.
- the winding is formed using a flat conductor, wound on the core, over several turns, at the same time as an insulating sheet, means being provided for placing this winding under radial compression.
- the core is, according to a proposed embodiment, provided with an axial slot in which a key is introduced.
- the conductor of the winding begins with a part introduced into the slot of the core and clamped between the latter and the key, which, moreover, electrically connects the winding to the core.
- the insulating sheet is made of fiberglass impregnated with curable resin, to resist pressure.
- the winding is surrounded by a split ring.
- the conductor of the winding is extended without insulation by the slot of the split ring and is wound thereon.
- the winding and its split ring are compressed in the bowl, to give the whole a great mechanical resistance.
- the coil is also electrically connected to the bowl.
- the conductive bowl internally comprises a steel bowl, while the core is also made of steel.
- the core is finally fixed to the bottom of the bowl by a screw, an insulator being provided for crossing the bowl.
- An arc track is formed on a conductive disc carried by the core and electrically and mechanically connected to the core by the screw.
- the contact element of Figure 1 shown in section along its axis XX ', is generally of circular symmetry. It is arranged in a medium switch voltage, such as a circuit breaker.
- This device comprises, in an enclosure filled with a dielectric gas such as sulfur hexafluoride, means for supporting the fixed part of the contact element, as well as means for moving and guiding the mobile part of the element of contact. These means are well known in the art and will therefore not be described.
- the fixed part of the contact element which comprises, from the outside to the inside, a cup 1, of conductive metal such as copper, comprising a connection electrode 33, an inside cup 6, in magnetizable metal such as steel, a ring 9, in malleable metal such as aluminum, a winding 23 of a conductive strip 8, in copper foil, wound at the same time as an insulating strip 10, for example in polyester resin loaded with glass fiber, a core 7, in magnetizable metal such as steel and a fixing screw 22, also in steel.
- the outer end 14 of the conductive strip 8 is in electrical contact with the bowl 1. Its inner end 12 is in electrical contact with the core 7, which is also conductive of electricity.
- An insulating sleeve 11 electrically isolates the screw 22 and the core 7 of the bowl 1.
- a nut 35 is screwed onto the end of the screw 22. It bears on the insulating sleeve 11.
- the core 7 carries, retained by the screw 22, a disc 21 of conductive metal, for example of copper, or of copper-chromium alloy, on which an arc track 3, made of tungsten or copper-tungsten alloy, is arranged.
- the free surface of this arc track is in front of the circular edge 31 of the bowl 1.
- the movable part of the contact element is shown in the closed position, to the left of the axis XX ′, and in the open position, to the right of this axis. It includes a cup 2, of conductive metal such as copper, provided an internal stop 19 and terminated by a circular edge 32 intended to come into abutment against the edge 31 of the bowl 1.
- This section contains, pushed by a compression spring 36, a movable breaking contact comprising a friction ring 18 , a movable disc 15 enclosed by the friction ring 18 and an arc track 4 similar to the arc track 3 and facing the latter.
- a flexible conductor 17 connects the movable breaking contact to the bottom of the section 2.
- An electrode 37 is connected to the outside of the section 2.
- the cup and the bowl are in electrical contact by their respective edges 31, 32, which establishes the main current path between the electrodes 33 and 37, at low resistance, short-circuiting the coil and the breaking contact.
- the contacts are open and the electrodes 33 and 37 are isolated from one another.
- the circuit breaker mechanism (not shown) pulls section 2 down.
- the cut-off contact remains closed, while the cut 2 moves away from the cup 1.
- a current is therefore established, between the electrodes 33 and 37, by the cup 1, the internal cup 6, l winding 23, the core 7, the disc 21, the arcing tracks 3 and 4 always in contact with each other, the movable disc 15, the conductor 17, the section 2 and the electrode 37.
- the spring 36 gradually relaxes, until the ring 18 comes to bear against the stopper 19. At this time, the disc 15 moves away from the disc 21. An arc strikes between the two discs. It maintains the current in the winding 23 of the coil. This generates a magnetic field circulating in the inner bowl 6, the core 7 and the screw 22, to close, at 5, in the form of a radial field having a component perpendicular to the arc struck between the tracks 3 and 4. As is well known, this causes a rotation of the arc along tracks 3 and 4 and helps to extinguish it, until the spacing of tracks 3 and 4 relative to each other is such that all current is interrupted.
- the core 7 has a wide slot 41, in which the inner end is engaged 12 not isolated from the conductor 8 of the winding, as well as a wedge 16, wedge-shaped.
- the winding is enveloped by a ring 9 also split, at 42, and the end 14 of the conductor 8 is led by this slot so as to pass over the ring and to complete an almost complete turn on this one.
- the winding and ring assembly is compressed in the bowl 6.
- the end 12 of the conductor 8 is placed in the slot 41, the key 16 is put in place, then the conductor 8 and the insulating sheet 10 are wound under tension on the core 7, the screw 22 being absent.
- the ring 9 is then put in place.
- the assembly is inserted into the bowl 6, under the effect of a press which presses on the bottom of the bowl 6 and on the ring 9. The latter bears against the bowl and is compressed, deforms plastically and compresses in turn, on the one hand, the end 14 of the conductor 8 against the cup 6 and, on the other hand, the winding 23 against the core 7.
- the end mity 14 of the conductor 8 is thus electrically connected to the bowl 6.
- the end 12 of the conductor 8 is crushed against the slot 41 and is brought into electrical contact with the core 7.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Circuit Breakers (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Power Conversion In General (AREA)
Abstract
Description
La présente invention concerne une bobine de soufflage magnétique par rotation de l'arc pour élément de contact d'un interrupteur électrique, tel qu'un contacteur ou disjoncteur. L'invention est applicable, notamment dans les appareils de ce type utilisés pour les moyennes tensions, de 3 à 40 kV.The present invention relates to a magnetic blow coil by rotation of the arc for the contact element of an electric switch, such as a contactor or circuit breaker. The invention is applicable, in particular in devices of this type used for medium voltages, from 3 to 40 kV.
Ces appareils sont bien connus. Dans certains d'entre eux, il est prévu une cuvette conductrice de forme générale cylindrique connectée à une arrivée de courant, un enroulement disposé dans ladite cuvette et dont une extrémité est connectée à la cuvette, pour produire un champ magnétique selon l'axe de la cuvette, un noyau conducteur connecté à l'autre extrémité de l'enroulement et situé au centre de l'enroulement, ainsi qu'un contact de coupure, disposé devant la bobine, par rapport à ladite cuvette, dans le champ magnétique qu'elle produit et électriquement connecté audit noyau. Des moyens spécifiques doivent être prévus pour empêcher que, sous l'effet d'un courant de court-circuit, la bobine n'explose à l'ouverture de l'interrupteur.These devices are well known. In some of them, there is provided a generally cylindrical conductive cuvette connected to a current inlet, a winding arranged in said cuvette and one end of which is connected to the cuvette, to produce a magnetic field along the axis of the cup, a conductive core connected to the other end of the winding and located in the center of the winding, as well as a cut-off contact, placed in front of the coil, relative to said cup, in the magnetic field that it produces and electrically connected to said core. Specific means must be provided to prevent the coil from exploding under the effect of a short-circuit current when the switch is opened.
L'invention vise à fournir des moyens simples et aisés à mettre en oeuvre pour conférer à l'enroulement de la bobine une grande résistance mécanique. Accessoirement, ces moyens permettent d'établir de façon simple et fiable les contacts électriques avec les deux extrémités de l'enroulement.The invention aims to provide simple and easy means to implement to give the winding of the coil a high mechanical strength. Incidentally, these means make it possible to establish in a simple and reliable manner the electrical contacts with the two ends of the winding.
Selon une caractéristique de l'invention, l'enroulement est constitué à l'aide d'un conducteur plat, enroulé sur le noyau, sur plusieurs tours, en même temps qu'une feuille isolante, des moyens étant prévus pour mettre cet enroulement sous compression radiale.According to a characteristic of the invention, the winding is formed using a flat conductor, wound on the core, over several turns, at the same time as an insulating sheet, means being provided for placing this winding under radial compression.
A cette fin, le noyau est, selon un mode de réalisation proposé, pourvu d'une fente axiale dans laquelle est introduite une clavette. Le conducteur de l'enroulement débute par une partie introduite dans la fente du noyau et serrée entre ce dernier et la clavette, ce qui, en outre, connecte électriquement l'enroulement au noyau.To this end, the core is, according to a proposed embodiment, provided with an axial slot in which a key is introduced. The conductor of the winding begins with a part introduced into the slot of the core and clamped between the latter and the key, which, moreover, electrically connects the winding to the core.
La feuille isolante est en fibre de verre imprégnée de résine durcissable, pour résister à la pression.The insulating sheet is made of fiberglass impregnated with curable resin, to resist pressure.
En outre, l'enroulement est entouré d'une bague fendue. Le conducteur de l'enroulement se prolonge sans isolant par la fente de la bague fendue et s'enroule sur celle-ci. L'enroulement et sa bague fendue sont comprimés dans la cuvette, pour conférer à l'ensemble une grande résistance mécanique. De plus, l'enroulement est aussi électriquement connecté à la cuvette.In addition, the winding is surrounded by a split ring. The conductor of the winding is extended without insulation by the slot of the split ring and is wound thereon. The winding and its split ring are compressed in the bowl, to give the whole a great mechanical resistance. In addition, the coil is also electrically connected to the bowl.
Par ailleurs, la cuvette conductrice comprend intérieurement une cuvette en acier, tandis que le noyau est aussi en acier. On obtient ainsi tout à la fois, un circuit magnétique à basse réluctance pour la bobine et des parties composantes à résistance mécanique élevée pour mettre l'enroulement sous compression.Furthermore, the conductive bowl internally comprises a steel bowl, while the core is also made of steel. We thus obtain all at the same time, a low reluctance magnetic circuit for the coil and component parts with high mechanical resistance to put the winding under compression.
Le noyau est enfin fixé au fond de la cuvette par une vis, un isolant étant prévu pour la traversée de la cuvette. Une piste d'arc est formée sur un disque conducteur porté par le noyau et électriquement et mécaniquement connecté au noyau par la vis.The core is finally fixed to the bottom of the bowl by a screw, an insulator being provided for crossing the bowl. An arc track is formed on a conductive disc carried by the core and electrically and mechanically connected to the core by the screw.
Les différents objets et caractéristiques de l'invention seront exposés de façon plus détaillée dans la description qui va suivre, faite à titre d'exemple non limitatif, en se reportant aux figures annexées qui représentent :
- - la figure 1, une vue en coupe axiale d'un élément de contact de disjoncteur dans lequel est appliquée la présente invention, et
- - la figure 2, une vue de dessous de la bobine de l'élément de contact de la figure 1.
- FIG. 1, an axial section view of a circuit breaker contact element in which the present invention is applied, and
- - Figure 2, a bottom view of the coil of the contact element of Figure 1.
L'élément de contact de la figure 1, représenté en coupe selon son axe X-X′, est généralement de symétrie circulaire. Il est disposé dans un interrupteur à moyenne tension, tel qu'un disjoncteur. Cet appareil comprend, dans une enceinte remplie d'un gaz diélectrique tel que l'hexafluorure de soufre, des moyens pour supporter la partie fixe de l'élément de contact, ainsi que des moyens pour mouvoir et guider la partie mobile de l'élément de contact. Ces moyens sont bien connus dans la technique et ne seront donc pas décrits.The contact element of Figure 1, shown in section along its axis XX ', is generally of circular symmetry. It is arranged in a medium switch voltage, such as a circuit breaker. This device comprises, in an enclosure filled with a dielectric gas such as sulfur hexafluoride, means for supporting the fixed part of the contact element, as well as means for moving and guiding the mobile part of the element of contact. These means are well known in the art and will therefore not be described.
On décrira d'abord la partie fixe de l'élément de contact qui comprend, de l'extérieur vers l'intérieur, une cuvette 1, en métal conducteur tel que le cuivre, comportant une électrode de raccordement 33, une cuvette intérieure 6, en métal magnétisable tel que l'acier, une bague 9, en métal malléable tel que l'aluminium, un enroulement 23 d'une bande conductrice 8, en clinquant de cuivre, enroulée en même temps qu'une bande isolante 10, par exemple en résine polyester chargée de fibre de verre, un noyau 7, en métal magnétisable tel que l'acier et une vis de fixation 22, également en acier.We will first describe the fixed part of the contact element which comprises, from the outside to the inside, a cup 1, of conductive metal such as copper, comprising a
L'extrémité extérieure 14 de la bande conductrice 8 est en contact électrique avec la cuvette 1. Son extrémité intérieure 12 est en contact électrique avec le noyau 7, lequel est également conducteur de l'électricité. Un manchon isolant 11 isole électriquement la vis 22 et le noyau 7 de la cuvette 1. Un écrou 35 est vissé sur l'extrémité de la vis 22. Il porte-sur le manchon isolant 11.The
Le noyau 7 porte, retenu par la vis 22, un disque 21 en métal conducteur, en cuivre par exemple, ou en alliage cuivre-chrome, sur lequel est aménagée une piste d'arc 3, en tungstène ou en alliage cuivre-tungstène. La surface libre de cette piste d'arc est en avant par rapport au chant circulaire 31 de la cuvette 1.The core 7 carries, retained by the screw 22, a
La partie mobile de l'élément de contact est représentée en position de fermeture, à gauche de l'axe X-X′, et en position d'ouverture, à droite de cet axe. Elle comprend une coupe 2, en métal conducteur tel que du cuivre, dotée d'une butée intérieure 19 et terminée par un chant circulaire 32 destiné à venir en appui contre le chant 31 de la cuvette 1. Cette coupe contient, poussé par un ressort de compression 36, un contact mobile de coupure comprenant une bague de friction 18, un disque mobile 15 enserré par la bague de friction 18 et une piste d'arc 4 semblable à la piste d'arc 3 et en regard de celle-ci. Un conducteur souple 17 connecte le contact mobile de coupure au fond de la coupe 2. Une électrode 37 est connectée à l'extérieur de la coupe 2.The movable part of the contact element is shown in the closed position, to the left of the axis XX ′, and in the open position, to the right of this axis. It includes a
Dans la position de fermeture (voir à gauche de l'axe X-X′), la coupe et la cuvette sont en contact électrique par leurs chants respectifs 31, 32, ce qui établit le trajet de courant principal entre les électrodes 33 et 37, à faible résistance, court-circuitant la bobine et le contact de coupure.In the closed position (see to the left of the axis XX ′), the cup and the bowl are in electrical contact by their
Dans la position d'ouverture (voir à droite de l'axe), les contacts sont ouverts et les électrodes 33 et 37 sont isolées l'une de l'autre.In the open position (see to the right of the axis), the contacts are open and the
Pour passer de la position de fermeture à la position d'ouverture, le mécanisme du disjoncteur (non représenté), tire la coupe 2 vers le bas. Dans un premier temps, le contact de coupure reste fermé, alors que la coupe 2 s'écarte de la cuvette 1. Un courant s'établit donc, entre les électrodes 33 et 37, par la cuvette 1, la cuvette interne 6, l'enroulement 23, le noyau 7, le disque 21, les pistes d'arc 3 et 4 toujours en contact l'une avec l'autre, le disque mobile 15, le conducteur 17, la coupe 2 et l'électrode 37.To move from the closed position to the open position, the circuit breaker mechanism (not shown) pulls
Le ressort 36 se détend progressivement, jusqu'à ce que la bague 18 vienne en appui contre la butée 19. A ce moment, le disque 15 s'écarte du disque 21. Un arc s'amorce entre les deux disques. Il maintient le courant dans l'enroulement 23 de la bobine. Celle-ci engendre un champ magnétique circulant dans la cuvette intérieure 6, le noyau 7 et la vis 22, pour se refermer, en 5, sous la forme d'un champ radial possédant une composante perpendiculaire à l'arc amorcé entre les pistes 3 et 4. Comme il est bien connu, cela entraîne un rotation de l'arc le long des pistes 3 et 4 et contribue à l'éteindre, jusqu'à ce que l'écartement des pistes 3 et 4 l'une par rapport à l'autre soit tel que tout courant s'interrompe.The
Les efforts électrodynamiques supportés par la bobine durant le temps où elle est parcourue par un courant de court-circuit sont considérables. Afin que la bobine puisse y résister sans dommage, elle est construite, selon l'invention, d'une façon que l'on va maintenant examiner plus en détail en se référant à la figure 2.The electrodynamic forces supported by the coil during the time it is traversed by a short-circuit current are considerable. So that the coil can withstand it without damage, it is constructed, according to the invention, in a way that we will now examine in more detail with reference to FIG. 2.
Sur cette figure qui est une vue de dessous de la cuvette magnétique 6, de l'enroulement, de la bague 9 et du noyau 7, on peut voir que le noyau 7 présente une large fente 41, dans laquelle est engagée l'extrémité intérieure 12 non isolée du conducteur 8 de l'enroulement, ainsi qu'une clavette 16, en forme de coin. A l'extérieur, l'enroulement est enveloppé par une bague 9 également fendue, en 42, et l'extrémité 14 du conducteur 8 est conduite par cette fente de manière à passer par-dessus la bague et à accomplir un tour presque complet sur celle-ci. L'ensemble enroulement et bague est comprimé dans la cuvette 6.In this figure which is a bottom view of the
Pour y parvenir, l'extrémité 12 du conducteur 8 est placée dans la fente 41, la clavette 16 est mise en place, puis le conducteur 8 et la feuille isolante 10 sont enroulés sous tension sur le noyau 7, la vis 22 étant absente. La bague 9 est alors mise en place. L'ensemble est inséré dans la cuvette 6, sous l'effet d'une presse qui appuie sur le fond de la cuvette 6 et sur la bague 9. Cette dernière vient en appui contre la cuvette et est comprimée, se déforme plastiquement et comprime à son tour, d'une part, l'extrémité 14 du conducteur 8 contre la cuvette 6 et, d'autre part, l'enroulement 23 contre le noyau 7. L'extré mité 14 du conducteur 8 est ainsi électriquement connectée à la cuvette 6. L'extrémité 12 du conducteur 8 est écrasée contre la fente 41 et est mise en contact électrique avec le noyau 7.To achieve this, the
La compression radiale ainsi obtenue, combinée avec les caractéristiques de friction de la feuille isolante, permet d'atteindre une tenue mécanique de l'enroulement telle qu'il puisse résister sans déformation aux forces électrodynamiques causées par l'établissement d'un courant très élevé dans la bobine.The radial compression thus obtained, combined with the friction characteristics of the insulating sheet, makes it possible to achieve mechanical resistance of the winding such that it can withstand without deformation the electrodynamic forces caused by the establishment of a very high current. in the coil.
Il est bien évident que la description qui précède n'a a été donnée qu'à titre d'exemple non limitatif et que de nombreuses variantes peuvent être imaginées, sans sortir pour autant du cadre de l'invention.It is obvious that the foregoing description has been given only by way of nonlimiting example and that numerous variants can be imagined, without thereby departing from the scope of the invention.
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88115314T ATE91358T1 (en) | 1987-09-23 | 1988-09-19 | MAGNETIC BLOW-OUT COIL WITH ARC ROTATION FOR SWITCHING ELEMENT OF AN ELECTRIC SWITCH. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8713131A FR2620854A1 (en) | 1987-09-23 | 1987-09-23 | MAGNETIC BLOWING SPRING BY ARC ROTATION FOR CONTACT ELEMENT OF AN ELECTRIC SWITCH |
FR8713131 | 1987-09-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0308847A1 true EP0308847A1 (en) | 1989-03-29 |
EP0308847B1 EP0308847B1 (en) | 1993-07-07 |
Family
ID=9355139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88115314A Expired - Lifetime EP0308847B1 (en) | 1987-09-23 | 1988-09-19 | Rotating arc magnetic blast coil for the contact element of an electrical switch |
Country Status (8)
Country | Link |
---|---|
US (1) | US4918268A (en) |
EP (1) | EP0308847B1 (en) |
AT (1) | ATE91358T1 (en) |
CA (1) | CA1308433C (en) |
DE (1) | DE3882186T2 (en) |
ES (1) | ES2042671T3 (en) |
FR (1) | FR2620854A1 (en) |
NO (1) | NO174945C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2718281A1 (en) * | 1994-03-30 | 1995-10-06 | Gec Alsthom T & D Sa | High or medium voltage circuit breaker with blow out coil |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5464956A (en) * | 1994-04-08 | 1995-11-07 | S&C Electric Company | Rotating arc interrupter for loadbreak switch |
DE19904932C1 (en) * | 1999-02-06 | 2000-10-26 | Felten & Guilleaume Ag | Quenching coil for use in gas-insulated switch disconnectors or circuit breakers |
US6100491A (en) * | 1999-06-25 | 2000-08-08 | Eaton Corporation | Electric current switching apparatus having an arc extinguisher with an electromagnet |
FR2824182A1 (en) * | 2001-04-26 | 2002-10-31 | Alstom | Off axis diverted flux permanent magnet circuit breaker having permanent magnet thermal expansion chamber held and magnetic diversion circuit formed with additional annular poles side fixed/moving contacts formed. |
US6943313B2 (en) * | 2001-10-22 | 2005-09-13 | S & C Electric Co. | Rotating arc fault-current interrupter |
FR3019934B1 (en) * | 2014-04-14 | 2017-12-08 | Alstom Technology Ltd | ROTATING ARC CIRCUIT BREAKER HAVING AN INDUCTIVE COIL HAVING A HIGH STRENGTH |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2511238A1 (en) * | 1974-03-14 | 1975-09-25 | Fuji Electric Co Ltd | Cct. breaker with annular contacts - has electromagnetic quenching coil generating magnetic field in quenching chamber |
FR2285700A1 (en) * | 1974-09-19 | 1976-04-16 | Alsthom Cgee | Dielectric gas filled electrical circuit breaker - has arc contacts of same dia surrounding main contacts |
EP0012048A1 (en) * | 1978-11-10 | 1980-06-11 | Merlin Gerin | Rotating arc switch |
EP0019320A1 (en) * | 1979-05-11 | 1980-11-26 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Arc spinner interrupter |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4052577A (en) * | 1975-09-02 | 1977-10-04 | I-T-E Imperial Corporation | Magnetically driven ring arc runner for circuit interrupter |
US4259554A (en) * | 1978-01-11 | 1981-03-31 | Electric Power Research Institute | Thin arc runner for arc spinner interrupter |
-
1987
- 1987-09-23 FR FR8713131A patent/FR2620854A1/en not_active Withdrawn
-
1988
- 1988-09-19 AT AT88115314T patent/ATE91358T1/en not_active IP Right Cessation
- 1988-09-19 DE DE88115314T patent/DE3882186T2/en not_active Expired - Fee Related
- 1988-09-19 ES ES88115314T patent/ES2042671T3/en not_active Expired - Lifetime
- 1988-09-19 EP EP88115314A patent/EP0308847B1/en not_active Expired - Lifetime
- 1988-09-21 NO NO884186A patent/NO174945C/en unknown
- 1988-09-22 US US07/247,549 patent/US4918268A/en not_active Expired - Lifetime
- 1988-09-22 CA CA000578181A patent/CA1308433C/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2511238A1 (en) * | 1974-03-14 | 1975-09-25 | Fuji Electric Co Ltd | Cct. breaker with annular contacts - has electromagnetic quenching coil generating magnetic field in quenching chamber |
FR2285700A1 (en) * | 1974-09-19 | 1976-04-16 | Alsthom Cgee | Dielectric gas filled electrical circuit breaker - has arc contacts of same dia surrounding main contacts |
EP0012048A1 (en) * | 1978-11-10 | 1980-06-11 | Merlin Gerin | Rotating arc switch |
EP0019320A1 (en) * | 1979-05-11 | 1980-11-26 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Arc spinner interrupter |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2718281A1 (en) * | 1994-03-30 | 1995-10-06 | Gec Alsthom T & D Sa | High or medium voltage circuit breaker with blow out coil |
Also Published As
Publication number | Publication date |
---|---|
ATE91358T1 (en) | 1993-07-15 |
FR2620854A1 (en) | 1989-03-24 |
EP0308847B1 (en) | 1993-07-07 |
NO174945B (en) | 1994-04-25 |
NO884186L (en) | 1989-03-28 |
NO884186D0 (en) | 1988-09-21 |
US4918268A (en) | 1990-04-17 |
DE3882186D1 (en) | 1993-08-12 |
NO174945C (en) | 1994-08-03 |
CA1308433C (en) | 1992-10-06 |
DE3882186T2 (en) | 1993-10-14 |
ES2042671T3 (en) | 1993-12-16 |
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