EP1359596A1 - Appareillage électrique de coupure comportant une chambre d'extinction d'arc munie d'ailettes de désionisation - Google Patents
Appareillage électrique de coupure comportant une chambre d'extinction d'arc munie d'ailettes de désionisation Download PDFInfo
- Publication number
- EP1359596A1 EP1359596A1 EP03354028A EP03354028A EP1359596A1 EP 1359596 A1 EP1359596 A1 EP 1359596A1 EP 03354028 A EP03354028 A EP 03354028A EP 03354028 A EP03354028 A EP 03354028A EP 1359596 A1 EP1359596 A1 EP 1359596A1
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- EP
- European Patent Office
- Prior art keywords
- fins
- arc
- chamber
- chimney
- contact
- 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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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
- H01H1/2041—Rotating bridge
- H01H1/2058—Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/346—Details concerning the arc formation chamber
Definitions
- the invention relates to an electrical switchgear, in particular a limiting device such as a limiting circuit breaker, the external manifestations of which during of the cut are reduced, even nonexistent.
- an arc extinguishing chamber is described. conventional for low voltage power circuit breaker.
- the room is located opposite the separable contacts of the circuit breaker, and provided with discharge orifices gases on a rear wall opposite the contacts.
- Flat metal fins are arranged inside the chamber, between the contacts and the gas discharge orifice, perpendicular to the side walls.
- the separation of the contacts causes an electric arc which is projected into the room by a loop effect electromagnetic.
- the arc meets the fins which absorb some of its energy.
- the arc also exchanges with the side walls of the chamber, which are made of gas-generating synthetic material.
- the arc gradually cools and its voltage rises so that when the current passes through zero, the arc goes out definitely.
- Thermal and kinetic effects of arc plasma during cutting cause a sudden increase in the pressure in the extinguishing chamber.
- the exhaust ports allow the exhaust gases to be exhausted and contain the pressure at a acceptable level inside the housing of the device. This cut-off gas evacuation partially ionized, however, imposes minimum safety distances between devices on the same electrical panel, in order to avoid any risk of priming between neighboring rooms under pressure. It also requires that arrangements be made for overpressures do not damage the table itself.
- the exhaust gases can be considered as pollutants and must therefore be filtered.
- a sealed low-voltage power circuit breaker is described in the document. WO95 / 08832.
- This circuit breaker includes an arc extinguishing chamber arranged opposite contacts and provided with cooling fins which are arranged between the contacts and an exit opening from the room.
- a recirculation channel directs the gases from the outlet from the chamber to the contact drive mechanism, passing through a filter deionization.
- the gases emitted during the cut-off at the arc extinguishing chamber thus flow in a closed circuit in the housing and are finally redirected to the contacts and towards the entrance of the room, after having been cooled and deionized.
- This convection important favors a rapid displacement of the arc inside the chamber, which is considered in this document as particularly advantageous for accelerating cutting.
- the arc is deflected on one or the other side and returns to the contacts dividing between the fins, then is restored between the contacts before being projected back into the room.
- the foot of the arc follows so a loop trajectory until the arc energy has been dissipated in the fins.
- the fins are thus used in a homogeneous manner.
- the circulation of the arc gives rise to periodic re-strikes of the arc on the contacts, which damage contacts.
- Document DE 26 24 957 describes arc extinguishing plates intended for an arc extinguishing chamber of an electrical switchgear.
- the plates have a cut forming a flared neck in U or V extended by a slit opening onto a circular widening. This shape is supposed to ensure good location of the arc and its rapid extinction. It is planned to cover the plates for extinguishing an insulating material, plastic or ceramic, in particular polytetrafluoroethylene, so as to stabilize the positioning of the arc in the part enlarged circular.
- the plates can be made of soft iron and covered, at level of the enlarged circular part at least, of a soft and insulating magnetic material electric, to prevent the arc from forming a foot on the periphery of the enlargement.
- the arch can be located in the enlarged circular part, but nothing is not intended to ensure its extinction.
- the measures taken to stabilize the arc and preventing the formation of an arc foot result in the exchange energy between the arc and its environment is very reduced.
- the arc cannot actually exchange that with the edges of the plates, at the level of the enlargement circular.
- the side part of the plates is therefore not used effectively for the arc cooling.
- the invention therefore aims to remedy the drawbacks of the state of the art, so as to offer, in a reduced volume, an efficient switchgear and to greatly reduced external manifestations.
- the corridor and the chimney allow the arch to settle quickly and stably at the bottom of the chamber, in the area which in section has an oblong shape.
- the oblong shape of the chimney thus contributes to a strong constriction of the arc, from where an important energy exchange with the fins and the walls at this level.
- a convection gas stream is established between the fins, laterally with respect to the corridor, and allows cooling and deionization of the gases in contact with the fins, until the arc is extinguished. This rapid cooling of the gases considerably limits the rise in pressure in the chamber. External manifestations are considerably reduced, if not completely eliminated.
- the surface of the fins is used during the entire cut and ensures a very good yield in energy transfer. It should be noted that the flat surfaces of the fins are used more to absorb the heat of the gases emitted, than to interact directly with the arc. More precisely, the arc does not seem to divide into a multiplicity of arcs stretching in series between adjacent fins.
- the fins have a given thickness and are separated two to two by a given distance which is of the same order of magnitude as said thickness.
- the short distance between fins promotes heat exchange between gases and fins, especially in the phase where the arc is located in the chimney.
- the distance between fins will be between 0.8 and 3 mm, and it will be between half and double the thickness of the fins.
- the distance between two fins here designates the smallest distance measured between the two fins, in particular when the fins are not parallel to each other. Note that this is the architecture of the circuit breaker, and in particular the presence of the corridor favoring the insertion of the electric arc, which allows to have the fins at a short distance from each other.
- the space between fins is always at least 20% greater than the thickness of the fins, while the distance can be authorized according to the invention significantly lower.
- the chimney is limited posteriorly by the rear wall. This arrangement favors the constriction of the arch foot, the rise in tension of the arch and the limitation of the pressure in the chamber.
- the rear wall is devoid of a gas discharge orifice. This promotes the circulation of gases between the fins, therefore the use of all the fin surface as heat exchange surface.
- the chamber and the volume together form a closed cutoff volume.
- the layout of the room allows to control the rise in pressure, and therefore to close the room, without major risk device explosion.
- the lower longitudinal electrode is separated from the fins by a distance which is of the same order of magnitude as the thickness of the fins.
- This arrangement allows a significant constriction of the foot of the arch.
- the lateral volume between the bottom wall and the fins, on at least one of the sides of the lower electrode, is limited by walls which also contribute to constriction of the arc.
- each fin is provided with at least one lateral tab of fixing, retained in a slot in one of the side walls, and at least one tongue posterior fixation, retained in a slot in the posterior wall.
- the tongue posterior answers the problem of fixing the fin, and allows to compensate possible mechanical weakness due to the presence of the chimney.
- the fins are parallel to each other.
- the rear wall is inclined by compared to the fins. This arrangement tends to stabilize the arc at the bottom of 1 room and to increase the length of the arc.
- the corridor extends substantially in the geometric reference plane, equidistant from the side walls of the chamber. This layout will be preferred for high performance and when one wishes to avoid too rapid alteration of the side walls of the chamber.
- the corridor is indeed a privileged way for the arc which is thus centered during its displacement towards the fireplace.
- the narrow intermediate part of the corridor approaches from one of the side walls away from the opening volume.
- This provision constitutes an interesting compromise to optimize the dimensions of the room. Contacts are found in a median plane of the room, midway between the side walls of the room, which optimizes the opening volume.
- the hallway sinks obliquely in the room.
- the narrowest fins are used mainly for their constricting effect when inserting the arch.
- the widest fins are used for also to cool the gases once the arc is installed in the chimney.
- the apparatus is a limiting circuit breaker comprising rigid conductors for bringing the current to the contacts, these rigid conductors having a shape such that when crossed by a current, they generate a field intense electromagnetic near the contacts, capable of causing repulsion electromagnetic contact moving to the separation position and to project the arc electric in the room.
- the fixed contact will be supported by a conductor in U shape.
- Other forms which are fully described in the prior art are, however, conceivable.
- the projection of the arc allows it to quickly reach the chimney.
- a low-voltage power limiting circuit breaker with molded housing has one or more breaking poles.
- the pole 10 represented on the Figure 1 has a molded plastic housing 12, inside which is housed a rotary contact bridge 14, carried by a section of shaft 16 extending perpendicular to the plane of Figure 1
- the shaft 16 is driven by a mechanism drive known per se, as described for example in document FR 2 589 624.
- the contact bridge 14 includes a first movable contact 18 cooperating with a first fixed contact 20, and a second movable contact 22 cooperating with a second fixed contact 24. At each pair of contacts 18, 20, resp. 22, 24 is associated with an extinguishing chamber arc 26, resp. 28.
- the construction of the pole 10 being symmetrical with respect to the axis of rotation 30 of the switching shaft 16, we will only describe in detail half of the pole associated with contacts 18, 20 and chamber 26.
- the fixed contact 20 is fixed to a contact member 32 consisting of a part metallic U-shaped, one end of which is connected to a connection pad 34, and the other end forms a lower electrode 36 extending inside the chamber.
- Contact 18 is movable between a separation position shown in Figure 1 and a contact position with the fixed contact 20.
- the separation movement of the contact 18 is a planar movement, in the sense that the trajectory of the contact is parallel to the plane I-I of section of Figure 1.
- the path covered by the movable contact 18 between its two extreme positions defines an opening volume 38 which is closed, on the side opposite the arc extinguishing chamber 26, by the shaft section 16, and laterally restricted by partition rooms 40.
- the arc extinguishing chamber 26 is delimited by a rear wall 42 opposite the opening volume 38, a lower wall 48 and an upper wall 50, constituted by walls of the housing, as well as two flat side walls 44, 46, constituted by plates of insulating material plated on a wall of the housing.
- the chamber 26 opens onto the opening volume 38.
- the cutting volume 52 constituted by the arc extinguishing chamber 26 and by the opening volume 38 is closed, in the sense that it is not provided with a channel or orifice for voluntary exhaust of the breaking gases. Through however, no special measures are taken to avoid possible leaks from lines of joins of the different parts of the molded case.
- the shutdown volume 52 is therefore a sealed volume, the sealing of which is however imperfect.
- the seal must be sufficient so that gas leaks do not disturb the desired circulation in the volume cutoff.
- the tightness is similar to that defined by the Ip54 code according to standard IEC 60529: "volume protected against splashing water in all directions and against dust (no harmful deposits) ".
- the chamber contains flat metallic fins 54 arranged parallel to the to each other and perpendicular to the side walls 44, 46.
- the interval between two fins is small, of the order of the thickness of the fins.
- Each fin has two lateral tabs 55a for positioning and retaining, embedded in the side walls 44,46, and two posterior tabs 55b.
- Each fin has its rear edge fully inserted into a groove in the rear wall to prevent circulation of gas, and the rear tabs 55b are force-fitted into deeper recesses of the rear wall to ensure mechanical strength.
- the side edges of the fins are pressed against the side walls, so as not to leave significant play between walls and fins.
- the lower wall 48 of the chamber has a groove 56 in which is embedded the lower electrode 36, as shown in detail in Figure 3.
- the flanges 58 from the groove protrude, with respect to the electrode 36, towards the interior of the chamber 26.
- the bottom wall 48 is raised so as to reduce the space separating the bottom wall 48 of the nearest fin 54.
- the distance between the electrode lower 36 and the nearest fin is of the same order of magnitude as the interval between two fins.
- the fins 54 are arranged in geometric planes oblique with respect to to this reference direction 60, making with this reference direction 60 an angle approximately 30 to 50 °.
- the electrode 36 formed by the fixed contact member 32 has an end portion arranged substantially parallel to the fins, perpendicular to the section plane III-III inside the chamber, and part intermediate disposed substantially perpendicular to the reference direction 60.
- the posterior wall 42 is inclined relative to the reference direction 60, but also in relation to a section plane III-III. The inclination of the rear wall 42 is intermediary between direction 60 and plan III-III.
- the chamber also has in its upper part a upper electrode 62 embedded covers a large part of the upper wall 50.
- the upper electrode is not electrically connected to one of the contacts.
- the fins 54 have an edge 68 forming a cutout delimiting two wings on either side of a corridor 70.
- the corridor extends in height from the lower wall 48 and the lower electrode 36, to the upper wall 50 and the upper electrode 62.
- the passage 70 has a flared front part 70a making facing the contacts. It has a narrow longitudinal portion 70b followed by a widening on the side opposite the contacts, near the rear wall of the chamber, forming a chimney 70c between the lower wall 48 and the lower electrode 36 on the one hand, and the upper wall 50 and the upper electrode 62 on the other.
- the electrode lower 36 and the upper electrode 62 - or the upper wall 50, if the electrode is absent - are thus directly opposite one another on both sides from the hall.
- the chimney 70c is oblong, that is to say that its width, measured in a direction perpendicular to the median longitudinal geometric plane is greater than its depth, measured in a section plane parallel to any one of the fins 54.
- the chimney 70c is inclined substantially parallel to the rear wall, according to a direction 63.
- the apparatus operates as follows. When a short appears circuit, the electromagnetic field induced by the current flowing in the conductors and in particular in the fixed contact member 32 in U, generates in the contact member mobile 14 electrodynamic forces which violently repel the mobile contact in separation position, this movement being subsequently confirmed by the opening of the shaft drive mechanism 16. Upon separation of the contacts 18, 20, an arc electric arises between contacts 18, 20. This arc is projected into the room by forces electrodynamics induced by the electromagnetic field. When moving to the rear wall 42 and the chimney 70c, the arch remains midway between the side walls 44, 46, because it tends to borrow the corridor 70b open between the fins.
- Convection gas is established from the rear wall 42 towards the prechamber 38 along the walls side 44, 46 of the chamber, so that the progression of the arc towards the posterior wall 42 is not hindered by an increase in pressure.
- the foot of the arch migrates quickly along the lower electrode 36 to the chimney 70c, even before the contact mobile 18 has reached its final separation position.
- the foot of the arc attacks the edges 58 of the groove 56 which generate gas, causing a constriction from the foot of the arch.
- the free space between the bottom wall 48 and the fins 54 is small, so that the lower part of the plasma column constituting the arc is confined between the lower electrode and the nearest fin, which further promotes constriction of the arc.
- the head of the arch initially remains at the protruding end of the movable contact 14. Due to the inclination of the fins 54, the arc embraces from the start of opening a large number of fins, which is favorable for heat exchange important.
- the foot of the arch is at the end of the lower electrode 36, at the bottom of the chimney 70c.
- the arc curves more so as to raise the chimney 70c from the end of the lower electrode 36 at the end of the upper electrode 62, then along the electrode upper 62 which constitutes an equipotential surface to arrive at the projecting end of the movable contact member 14 in the separation position.
- the arc even divides into two arcs in series: a long arc between the lower electrode 36 and the electrode upper 62 and a short arc between the upper electrode 62 and the movable contact member 14. In this case, the head of the long arch migrates almost instantaneously towards the bottom of the bedroom.
- the arc settles stably in the chimney 70c until its extinction.
- This position of the arc promotes lateral circulation of the gas in the chamber, from the chimney to the opening volume, i.e. a flow between the fins 54, along the side walls 44, 46.
- the gas cools quickly by exchange with the fins and the side walls of the chamber and contracted. If we except the possible leaks by the joints between the parts of the case, The gas does not find an exhaust outside the cut-off volume 52.
- the fins 54 provide the arc with a heat exchange surface throughout the cut, especially in their part near the edges 68.
- the arc both at the time of its progression in the room that when installed in the chimney 70c, tends to dilate to invade all available space.
- the fins 54 contain this expansion in interacting with the periphery of the arc.
- the arc voltage increases as the arc cools and the pressure increases in the cut-off volume, which ultimately allows the arc to be extinguished during current flow through zero.
- the narrow middle part 70b of the passage 70 promotes the migration of the arc towards the bottom of the chamber, and the chimney 70c stabilizes the arc in this region.
- the tests Comparatives show that if we practice a chimney at the bottom of the room without corridor intermediate, the arc does not always reach the chimney, and conversely, if we has a corridor without a chimney, the arch does not settle at the end of the corridor so that assists in repetitive arcing between contacts. So this is the conjunction of the narrow intermediate part 70b of the corridor and the chimney 70c which makes it possible to move away quickly and permanently the arc of contacts.
- FIG. 5 illustrates a second embodiment of the invention, in which each of the planar fins of the first embodiment is replaced by two fins lateral 154a, 154b. Each side fin is then fitted with a mounting tab in the rear wall and a mounting tab in the side wall. This variant simplifies the manufacture of the fins, and optionally allows mounting of the staggered fins.
- a third embodiment of the invention, illustrated in FIG. 6, has therefore been developed specifically for a narrow device with a chamber close arc extinction.
- Corridor 270 runs directly along one of the side walls 246 and is delimited on the opposite lateral side by fins 254, pressed against the wall lateral 244.
- the width of the fins, measured between the passage 270 and the wall 244, is then sufficient that the side walls do not significantly impede the penetration of gases between the fins 254. Tests show that the gases penetrate well between the fins 254 and cool down there.
- direct exposure of wall 246 to the arc makes this delicate device to master and requires a non-gas generating wall of good capacity heat, for example porous ceramic.
- a fourth embodiment of the invention also developed for narrow chambers, is illustrated in Figure 7 and solves this residual problem.
- the reference signs used in the first embodiment increased by 300.
- Contacts 318 are located remote laterally with respect to the median plane 302.
- the dividers 354 are cut so to define a corridor 370 comprising a mouth 370a, a middle part 370b and a fireplace 370c.
- the middle part 370b extends obliquely to the plane of median.
- Corridor 370 thus approaches one of the side walls away from the opening volume 338. Between the middle part of the corridor 370b and the wall 344, the fins have a small width, while on the other side of the corridor 370b, the width of the fins is more important. This phenomenon is accentuated by approaching the bottom of the bedroom.
- the chimney 370c is constituted in this embodiment by an elbow of the corridor. The insertion of the arch in corridor 370 is not hampered by the arrangement particular of the corridor, because it remains in a radial plane relative to the geometric axis reference.
- the side walls 344, 346 of the chamber are sufficiently protected from the arc due to the interposition of the fins 354, even on the side where these are narrower.
- the arc is installed in the chimney 370c and remains there.
- the gases emitted at the periphery of the arc then find between the corridor 370b and the wall 346 wide fins which provide efficient cooling and which also allow sufficient flow.
- This arrangement offers the advantage compared to the embodiment in Figure 6, protect the side wall 344 of the chamber located on the side of the fins narrow, without hampering the flow of gases.
- the upper electrode may be omitted in some cases.
- the fins are preferably parallel to each other, which promotes a homogeneous gas flow and continuous exchange with the entire surface of the fins.
- Other arrangements can be envisaged.
- the angle of inclination of the fins relative to the reference direction can be more or less important, between 0 and 90 °, typically between 30 and 60 °.
- the gas flow laterally from the chimney to the prechamber can be favored by the installation of intermediate insulating partitions parallel to the walls lateral and delimiting with them lateral channels on either side of the corridor median.
- the invention applies equally well to the double break pole, having a bridge movable contact and two breaking chambers per pole, only to one pole comprising only one arc extinguishing chamber by pole.
- the movable contact can be rotary or movable in translation.
- the fixed contact 20 can be replaced by a movable contact, driven by the mechanism for driving the contacts in opposition to the contact 22, or by a contact semi-mobile, driven by a contact pressure spring.
- the invention although it finds its primary application in rooms waterproof extinguishing systems, is also applicable to arc extinguishing chambers provided a gas exhaust port. In this case, it seems preferable to avoid any exhaust near the bottom of the chimney and the lower electrode. A exhaust from the top of the chimney, near the upper electrode or through holes in the upper electrode are possible.
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
- un boítier définissant un plan géométrique longitudinal de référence, et
délimitant :
- un volume d'ouverture et
- une chambre d'extinction d'arc s'ouvrant sur le volume d'ouverture et délimitée par deux parois latérales opposées parallèles au plan géométrique de référence, une paroi postérieure éloignée du volume d'ouverture, une paroi inférieure et une paroi supérieure ;
- une paire de contacts séparables disposée dans le volume d'ouverture et comportant un premier contact mobile suivant une trajectoire plane dans le plan géométrique de référence, entre une position de contact et une position de séparation et un deuxième contact ;
- des ailettes de refroidissement disposées à l'intérieur de la chambre d'extinction d'arc, perpendiculairement au plan géométrique de référence, chaque ailette ayant une arête libre d'attaque exposée à l'arc ;
- une électrode longitudinale inférieure en liaison électrique avec 1e deuxième contact, l'électrode inférieure couvrant au moins partiellement la paroi inférieure de la chambre ;
- les arêtes libres délimitent latéralement un couloir s'étendant en hauteur de
l'électrode inférieure à la paroi supérieure, le couloir ayant :
- une première extrémité longitudinale évasée débouchant sur le volume d'ouverture
- une deuxième extrémité longitudinale élargie formant une cheminée à proximité de la paroi postérieure, la cheminée ayant section oblongue dans un plan de section parallèle aux ailettes,
- une portion intermédiaire étroite reliant la première extrémité longitudinale à la cheminée, l'électrode inférieure s'étendant longitudinalement dans le couloir du deuxième contact jusqu'à la cheminée au moins.
- la figure 1 représente un appareillage selon un premier mode de réalisation de l'invention, vu en coupe suivant un plan I-I ;
- la figure 2 représente un détail de l'appareillage de la figure 1, en coupe suivant un plan II-II ;
- la figure 3 représente un détail de l'appareillage de la figure 1, en coupe suivant un plan III-III;
- la figure 4 représente une ailette de l'appareillage de la figure 1 ;
- la figure 5 représente vue schématique d'un appareillage selon un deuxième mode de réalisation de l'invention ;
- la figure 6 représente vue schématique d'un appareillage selon un troisième mode de réalisation de l'invention ;
- la figure 7 représente vue schématique d'un appareillage selon un quatrième mode de réalisation de l'invention.
Claims (12)
- Appareillage électrique de coupure, comportantcaractérisé en ce que :un boítier (12) définissant un plan géométrique longitudinal de référence (I-I), et délimitant :un volume d'ouverture (38) etune chambre d'extinction d'arc (26) s'ouvrant sur le volume d'ouverture (38) et délimitée par deux parois latérales opposées (44, 46) parallèles au plan géométrique de référence, une paroi postérieure (42) éloignée du volume d'ouverture (38), une paroi inférieure (48) et une paroi supérieure (50);une paire de contacts séparables disposée dans le volume d'ouverture (38) et comportant un premier contact (18) mobile suivant une trajectoire plane dans le plan géométrique de référence, entre une position de contact et une position de séparation et un deuxième contact (20) ;des ailettes de refroidissement (54) disposées à l'intérieur de la chambre d'extinction d'arc (26), perpendiculairement au plan géométrique de référence, chaque ailette ayant une arête libre d'attaque (68) exposée à l'arc ;une électrode longitudinale inférieure (36) en liaison électrique avec le deuxième contact (20), l'électrode inférieure (36) couvrant au moins partiellement la paroi inférieure (48) de la chambre (26) ;les arêtes libres (68) délimitent latéralement un couloir s'étendant en hauteur de l'électrode inférieure (36) à la paroi supérieure (50), le couloir ayant :une première extrémité longitudinale évasée (70a) débouchant sur le volume d'ouverture (38)une deuxième extrémité longitudinale élargie formant une cheminée (70c) à proximité de la paroi postérieure, la cheminée (70c) ayant section oblongue dans un plan de section parallèle aux ailettes (54),une portion intermédiaire étroite (70b) reliant la première extrémité longitudinale (70a) à la cheminée (70c), l'électrode inférieure s'étendant longitudinalement dans le couloir du deuxième contact jusqu'à la cheminée au moins.
- Appareillage selon la revendication 1, caractérisé en ce que les ailettes ont une épaisseur donnée et sont séparées deux à deux par une distance donnée qui est du même ordre de grandeur que ladite épaisseur.
- Appareillage selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que la cheminée est limitée postérieurement par la paroi postérieure.
- Appareillage selon l'une quelconque des revendications précédentes, caractérisé en ce que la paroi postérieure est dépourvue d'orifice d'évacuation de gaz.
- Appareillage selon l'une quelconque des revendications précédentes, caractérisé en ce que la chambre (26) et le volume d'ouverture (38) forment ensemble un volume de coupure (52) clos.
- Appareillage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'électrode longitudinale inférieure (36) est séparée des ailettes par une distance qui est du même ordre de grandeur que l'épaisseur des ailettes.
- Appareillage selon l'une quelconque des revendications précédentes, caractérisé en ce que chaque ailette (54) est munie d'au moins une languette latérale (55a) de fixation, retenue dans une fente d'une des parois latérales (44, 46), et d'au moins une languette postérieure (55b) de fixation, retenue dans une fente de la paroi postérieure (42).
- Appareillage selon l'une quelconque des revendications précédentes, caractérisé en ce que les ailettes (54) sont parallèles entre elles.
- Appareillage selon la revendication 8, caractérisé en ce que la paroi postérieure (42) est inclinée par rapport aux ailettes..
- Appareillage selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le couloir (70) s'étend sensiblement dans le plan géométrique de référence, à égale distance des parois latérales (44, 46) de la chambre (26).
- Appareillage selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la partie intermédiaire étroite du couloir (70) se rapproche d'une des parois latérales en s'éloignant du volume d'ouverture.
- Appareillage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'appareillage (10) est un disjoncteur limiteur comportant des conducteurs rigides (10, 14) d'amenée du courant aux contacts (18, 20), ces conducteurs rigides ayant une forme telle que lorsqu'ils sont parcourus par un courant, ils engendrent un champ électromagnétique intense à proximité des contacts (18, 20), propre à provoquer une répulsion électromagnétique du contact mobile (20) vers la position de séparation et à projeter l'arc électrique dans la chambre (26).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0205344 | 2002-04-29 | ||
| FR0205344A FR2839195B1 (fr) | 2002-04-29 | 2002-04-29 | Appareillage electrique de coupure comportant une chambre d'extinction d'arc munie d'ailettes de desionisation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1359596A1 true EP1359596A1 (fr) | 2003-11-05 |
| EP1359596B1 EP1359596B1 (fr) | 2010-11-17 |
Family
ID=28800004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03354028A Expired - Lifetime EP1359596B1 (fr) | 2002-04-29 | 2003-03-25 | Appareillage électrique de coupure comportant une chambre d'extinction d'arc munie d'ailettes de désionisation |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6794595B2 (fr) |
| EP (1) | EP1359596B1 (fr) |
| CN (1) | CN1270336C (fr) |
| DE (1) | DE60334953D1 (fr) |
| FR (1) | FR2839195B1 (fr) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE50304860D1 (de) * | 2003-07-11 | 2006-10-12 | Abb Research Ltd | Hochleistungsschalter mit Kühlrippenanordnung |
| FR2879019B1 (fr) * | 2004-12-06 | 2008-04-04 | Schneider Electric Ind Sas | Dispositif electrique de coupure avec chambre d'extinction d'arc a ailettes de desionisation |
| US7521645B2 (en) * | 2006-09-20 | 2009-04-21 | Eaton Corporation | Arc plate, and arc chute assembly and electrical switching apparatus employing the same |
| KR100910525B1 (ko) * | 2007-09-03 | 2009-07-31 | 엘에스산전 주식회사 | 모터보호용 차단기의 아크소호장치 |
| US20090277768A1 (en) * | 2008-05-08 | 2009-11-12 | Cooper Technologies Company | Low Oil Trip Assembly for a Fault Interrupter and Load Break Switch |
| US7920037B2 (en) * | 2008-05-08 | 2011-04-05 | Cooper Technologies Company | Fault interrupter and load break switch |
| US7936541B2 (en) * | 2008-05-08 | 2011-05-03 | Cooper Technologies Company | Adjustable rating for a fault interrupter and load break switch |
| US7683287B2 (en) * | 2008-05-08 | 2010-03-23 | Cooper Technologies Company | Multiple arc chamber assemblies for a fault interrupter and load break switch |
| US7952461B2 (en) * | 2008-05-08 | 2011-05-31 | Cooper Technologies Company | Sensor element for a fault interrupter and load break switch |
| US8004377B2 (en) * | 2008-05-08 | 2011-08-23 | Cooper Technologies Company | Indicator for a fault interrupter and load break switch |
| US8153916B2 (en) * | 2008-08-14 | 2012-04-10 | Cooper Technologies Company | Tap changer switch |
| US8013263B2 (en) * | 2008-08-14 | 2011-09-06 | Cooper Technologies Company | Multi-deck transformer switch |
| US7872203B2 (en) | 2008-08-14 | 2011-01-18 | Cooper Technologies Company | Dual voltage switch |
| US8331066B2 (en) * | 2008-12-04 | 2012-12-11 | Cooper Technologies Company | Low force low oil trip mechanism |
| US8164018B2 (en) * | 2009-03-23 | 2012-04-24 | Siemens Industry, Inc. | Circuit breaker arc chambers and methods for operating same |
| US8247726B2 (en) * | 2009-07-22 | 2012-08-21 | Eaton Corporation | Electrical switching apparatus and arc chute assembly therefor |
| CN104303253A (zh) * | 2012-04-10 | 2015-01-21 | Abb技术有限公司 | 用于低压、中压及高压应用的开关的灭弧装置 |
| US10134537B2 (en) * | 2015-02-17 | 2018-11-20 | Abb Schweiz Ag | Filter assembly for a circuit breaker arc chamber |
| JP6808671B2 (ja) * | 2018-03-20 | 2021-01-06 | 株式会社東芝 | ガス遮断器 |
| CN109904020B (zh) * | 2019-03-20 | 2024-08-27 | 浙江正泰电器股份有限公司 | 低压断路器灭弧室 |
| CN109859973B (zh) * | 2019-03-20 | 2024-08-27 | 浙江正泰电器股份有限公司 | 低压断路器灭弧室 |
| CN114695011B (zh) * | 2020-12-30 | 2025-08-15 | 上海量乘机电科技有限公司 | 一种电器开关的触头灭弧系统 |
| CN115188615A (zh) * | 2022-07-21 | 2022-10-14 | 上海良信电器股份有限公司 | 一种开关单元、隔离开关及供电系统 |
| WO2024017046A1 (fr) * | 2022-07-21 | 2024-01-25 | 上海良信电器股份有限公司 | Unité de commutation, interrupteur d'isolement et système d'alimentation électrique |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB396871A (en) * | 1932-04-15 | 1933-08-17 | Herbert Pearce | Improvements in or relating to electric circuit interrupters |
| US2244061A (en) * | 1940-07-31 | 1941-06-03 | Ite Circuit Breaker Ltd | Arc quencher |
| DE1792081U (de) * | 1956-09-06 | 1959-07-16 | Joseph Westermeyer | Funkenblasung fuer schaltgeraete. |
| DE2410049A1 (de) * | 1974-03-02 | 1975-09-11 | Bbc Brown Boveri & Cie | Einrichtung zum loeschen von hohen kurzschlusswechsel- und gleichstroemen in deionblechkammern |
| DE2624957A1 (de) * | 1976-05-07 | 1977-11-17 | Bbc Brown Boveri & Cie | Loeschplatte fuer elektrische schalter |
| DE4333278A1 (de) * | 1993-09-24 | 1995-03-30 | Siemens Ag | Leistungsschalter mit einer Lichtbogenlöscheinrichtung |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1047081A (fr) * | 1974-11-26 | 1979-01-23 | General Electric Company | Montage pour reduction d'arc |
| US4247746A (en) * | 1977-10-04 | 1981-01-27 | Dorman Smith Switchgear Limited | Electric circuit breaker |
| US4229630A (en) * | 1980-03-17 | 1980-10-21 | Westinghouse Electric Corp. | Circuit breaker utilizing improved arc chambers |
| KR900007273B1 (ko) * | 1986-09-16 | 1990-10-06 | 미쓰비시전기 주식회사 | 회로 차단기 |
| US4675481A (en) * | 1986-10-09 | 1987-06-23 | General Electric Company | Compact electric safety switch |
| US5498847A (en) * | 1994-01-13 | 1996-03-12 | Square D Company | Arc stack for a circuit breaker |
| JP3166890B2 (ja) * | 1994-05-24 | 2001-05-14 | 富士電機株式会社 | 回路遮断器の消弧装置 |
| US5589672A (en) * | 1994-06-14 | 1996-12-31 | Fuji Electric Co., Ltd. | Circuit breaker with arc quenching device and vent |
| US6313425B1 (en) * | 2000-02-24 | 2001-11-06 | General Electric Company | Cassette assembly with rejection features |
-
2002
- 2002-04-29 FR FR0205344A patent/FR2839195B1/fr not_active Expired - Fee Related
-
2003
- 2003-03-25 EP EP03354028A patent/EP1359596B1/fr not_active Expired - Lifetime
- 2003-03-25 DE DE60334953T patent/DE60334953D1/de not_active Expired - Lifetime
- 2003-04-07 US US10/407,433 patent/US6794595B2/en not_active Expired - Lifetime
- 2003-04-29 CN CN03125012.2A patent/CN1270336C/zh not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB396871A (en) * | 1932-04-15 | 1933-08-17 | Herbert Pearce | Improvements in or relating to electric circuit interrupters |
| US2244061A (en) * | 1940-07-31 | 1941-06-03 | Ite Circuit Breaker Ltd | Arc quencher |
| DE1792081U (de) * | 1956-09-06 | 1959-07-16 | Joseph Westermeyer | Funkenblasung fuer schaltgeraete. |
| DE2410049A1 (de) * | 1974-03-02 | 1975-09-11 | Bbc Brown Boveri & Cie | Einrichtung zum loeschen von hohen kurzschlusswechsel- und gleichstroemen in deionblechkammern |
| DE2624957A1 (de) * | 1976-05-07 | 1977-11-17 | Bbc Brown Boveri & Cie | Loeschplatte fuer elektrische schalter |
| DE4333278A1 (de) * | 1993-09-24 | 1995-03-30 | Siemens Ag | Leistungsschalter mit einer Lichtbogenlöscheinrichtung |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1455425A (zh) | 2003-11-12 |
| EP1359596B1 (fr) | 2010-11-17 |
| CN1270336C (zh) | 2006-08-16 |
| DE60334953D1 (de) | 2010-12-30 |
| US20030201853A1 (en) | 2003-10-30 |
| FR2839195A1 (fr) | 2003-10-31 |
| US6794595B2 (en) | 2004-09-21 |
| FR2839195B1 (fr) | 2004-07-23 |
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