EP0951029B1 - Ensemble de contacts d'arc - Google Patents

Ensemble de contacts d'arc Download PDF

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Publication number
EP0951029B1
EP0951029B1 EP99810169A EP99810169A EP0951029B1 EP 0951029 B1 EP0951029 B1 EP 0951029B1 EP 99810169 A EP99810169 A EP 99810169A EP 99810169 A EP99810169 A EP 99810169A EP 0951029 B1 EP0951029 B1 EP 0951029B1
Authority
EP
European Patent Office
Prior art keywords
switching
arrangement according
consumable
contact
pin
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
Application number
EP99810169A
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German (de)
English (en)
Other versions
EP0951029A2 (fr
EP0951029A3 (fr
Inventor
Lukas Dr. Zehnder
Robert Anderes
Christian Dähler
Kurt Dr. Kaltenegger
Thomas Dr. Schoenemann
Klaus-Dieter Dr. Weltmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Schweiz AG
Original Assignee
ABB Schweiz AG
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Filing date
Publication date
Application filed by ABB Schweiz AG filed Critical ABB Schweiz AG
Publication of EP0951029A2 publication Critical patent/EP0951029A2/fr
Publication of EP0951029A3 publication Critical patent/EP0951029A3/fr
Application granted granted Critical
Publication of EP0951029B1 publication Critical patent/EP0951029B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/38—Plug-and-socket contacts
    • H01H1/385—Contact arrangements for high voltage gas blast circuit breakers
    • 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
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/46—Contacts characterised by the manner in which co-operating contacts engage by sliding self-aligning contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts

Definitions

  • the invention relates to a burn-off circuit arrangement according to the preamble of claim 1.
  • very high short-circuit currents can be switched off, so they are preferably used in circuit breakers, as used in power plants, substations and other facilities of the electric power supply for switching on and off of operating and overflow can be used.
  • EP-A-0 800 190 A1 describes a consumable switching arrangement of the aforementioned type.
  • This arrangement comprises two formed as a contact tulip and spaced from each other along an axis fixed shift rings and a feasible through the openings of the two rings switching pin.
  • axially aligned contact fingers arranged in the contact tulips flow through axially directed currents.
  • the contact fingers attract because of the flow forces strongly and thus reduce the inner diameter of the two contact tulips.
  • the guided when switched off by the two tulips switching pin is therefore optionally exposed to an excessively large contact force which strongly loads the Abbrandschaltan Aunt and absorbs a large part of the necessary force to move the shift pin driving force.
  • This arrangement comprises a switching pin having a resiliently formed, contacting end and an annular, rigid counterpart switching piece, which comprises the switching pin in the closed position of the switch.
  • the contact-making end of the switching pin is designed as a ring with a U-shaped cross-section.
  • the inner leg of the U is connected to the free end of a pipe forming the switching pin, whereas the outer leg is slotted to form contact blades and is supported with its free end formed by the fins on an inner surface of the ring.
  • the contact force in the closed position depends on the spring force of the fins and the amount of current to be disconnected, which flows in a defined by the U-shaped cross-section of the ring conductor loop, which seeks to expand under the influence of the current forces.
  • the Abbrandschaltan extract can be sized for different contact forces.
  • a consumable switching arrangement which can also be used in switches of higher current intensities is described in DE 12 20 927 B.
  • This arrangement includes a switch pin formed by a slotted tube.
  • a rigid support ring is inserted, whose outer diameter is equal to the inner diameter of the tube. If the switching pin flows through current, the current forces exert an attractive force on the lamellae. Characterized in that a suitably mounted support ring is provided, the attractive force spreads the lamellae on the contactor switching tip due to leverage. It is thus achieved when switching large currents a large contact force.
  • the invention has for its object to provide a burnup circuit in which the switching pin and two interacting with him switching rings are not mechanically overloaded even at high currents. At the same time, however, contact forces are to be generated which counteract the contact lift-off forces acting between the switching pin and the two switching rings and compensate them in such a way that the required contact pressure is always ensured.
  • a first pair of switching rings is rigid, whereas the switching pin is formed or held in such a way that under the action of mechanically and / or electromagnetically generated contact forces in the closed position with a first contact zone against the first switching ring and in the closed position and / or when turned off with a second contact zone presses against the inside of the second switching ring.
  • the contact pressure is achieved mainly by the switching pin, which is deflected by contact with the two switching rings, deformed or spread by electromagnetic forces in the region of the contact zones. In this way, therefore, a relatively large burnup reserve can be ensured.
  • embodiments in which the switching pin presses laterally against the inside of the shift rings are particularly favorable, since then the contact zones and the tip of the shift pin carrying an arc base point can each be designed independently of one another according to their particular tasks.
  • the first switching piece is formed as a first switching ring 4, the second switching piece consists of a switching pin 5 and a second electrical connection (not shown) connected second switching ring 6.
  • an arc chamber 7 which is connected to the heating volume 3 via a circumferential blow slot 8, which is bounded on both sides by electrically insulating frontal part covers of the first switching ring 4 and the second switching ring 6.
  • the switching pin 5 is tiltably mounted on a flexible rod 10 via a ball joint 9, so that it is tiltable about a transverse to the indexing axis 1 oriented, but otherwise not fixed tilting axis.
  • the rod 10 is connected to a holder 11, which by a switching drive, not shown, between the closed position and the Off position along the shift axis 1 is slidably mounted.
  • a pressure chamber 12 is disposed behind the first switching ring 4, which is connected by a non-return side-branching rotationally symmetrical return channel 13 via a check valve with the heating volume 3 and exhaust pipes 14 and a central overpressure valve 15 with a first exhaust volume 16a ,
  • the pressure chamber 12 and the return channel 13 are bounded by a cover 17 and a cap 18, both made of insulating material.
  • the opening of the second switching ring 6 expands in the axial continuation of the arc chamber 7 against a second exhaust volume 16b.
  • the rod 10 is slightly inclined relative to the switching axis 1, so that the switching pin 5 of the same relative to the rest position, which it occupies in the off position, slightly laterally displaced.
  • the switching pin 5 When switching it is laterally deflected by the contact only with the second switching ring 6 and then with the first switching ring 4 under elastic bending of the rod 10, so that elastic restoring forces act in the rod 10, which press the switching pin 5 laterally against the switching rings. Since the ball joint 9 and thus the pivot point of the switching pin 5 in the axial direction between the first switching ring 4 and the second switching ring 6 is located, the inclination of the switching pin 5 adapts in such a way that it presses against the inner sides of both switching rings. The contact forces thus generated between the switching pin 5 on the one hand and the first switching ring 4 and the second switching ring 6 on the other hand sufficient to compensate for Maisabhebe employment at high currents and to ensure a sufficient contact pressure.
  • the first switching ring 4, the second switching ring 6 and the switching pin 5 are made of erosion-resistant material, eg. B. WCu, graphite, CFC, graphite / Cu or CFC / Cu.
  • the heating of the gas in the heating volume 3 by the arc and the partial redirection of the pinch pressure generated by the arc in the pressure chamber 12 via the return channel 13 in the same leads to the construction of a high gas pressure in the heating volume 3, the escape of the gas through the blow slot 8 in the arc chamber 7 and further into the exhaust volumes 16a, b at the next zero crossing, whereby the arc is effectively blown and extinguished.
  • the pressure chamber 12 and the return channel 13 may be lined with gas-emitting material.
  • the pressure in the Heating volume can also be increased by co-operated by the switching drive blow piston.
  • the contact zones each side, a large Abbrandreserve is available.
  • the contact zones are not roughened by burning.
  • the opening of the second switching ring 6 is released later, when in the course of the switch-off movement of the switching pin 5 is also withdrawn from this.
  • both openings are free at the same time.
  • the diameter of the second switching ring 6 is slightly larger than that of the first switching ring 4 and the switching pin 5 has a front portion 19 whose diameter approximately corresponds to the opening of the first switching ring 4. He goes stepwise into a rear portion 20 whose diameter corresponds almost to the larger of the second switching ring 6.
  • a ball joint of the switching pin 5 may also be connected via a hinge to the rod 10, so that the transverse to the indexing axis oriented tilting axis is spatially fixed.
  • the switching pin 5 is connected to the holder (not shown) via a leaf spring 21 and a rigid rod 22.
  • the leaf spring 21 is rigidly connected both to the rod 22 and to the end of the switching pin 5 and formed so that the switching pin 5 in its in the off position (Fig. 3b) assumed rest position also shifted laterally relative to the switching axis 1 and something to the same Side is inclined so that it in the closed position (Fig.
  • the switching pin 5 is mounted axially displaceable on the holder 11 and a axially compressible disc spring package 23 supported on the same.
  • the diameter of a front portion 19 of the switching pin 5 is greater than that of the opening of the first switching ring 4, so that their hemispherical tip in the closed position on the inner edge of the end face of the first switching ring 4 completely rests and applied by the restoring forces of the axially compressed cup spring 23 contact forces presses against it.
  • At the front portion 19 connects via a shoulder 24, a rear portion 20 of larger diameter.
  • the second contact piece in addition to the switching pin 5, in turn, a second switching ring 6, which surrounds the inner edge of a circular disk 25.
  • the second switching ring 6 is divided into six sectors 26, as well as the annular disc 25, which has six outgoing from the inner edge and up to a circumferential outer ring 27 continuous radial slots 28, which divide them in as many sectors 29.
  • the annular disk 25 may be made of harness technically deviselastic material, for.
  • a curable copper alloy such as CuCrZr or CuBe exist, so that the sectors 26 of the second switching ring 6 are deflected under elastic deformation of the sectors carrying them 29 of the annular disc 25 in the axial direction.
  • the switching pin is rigid and preferably solid and elastically supported and is deflected in the closed position by the contact with the first switching ring and the second switching ring, so that act from the holder ago elastic restoring forces on him, for the required Contact forces between switching pin and switching rings provide.
  • the switching pin itself consists in the region of the contact zone or zones of two or more parts, which are at least partially radially limited movement and are spread apart by mechanical or electromagnetic forces, so that they face outwardly facing contact surfaces against the Press inner sides of the shift rings.
  • the switching pin 5 is preferably coaxial with the first switching ring 4 and the second switching ring 6, so that the switching pin axis with the switching axis. 1 coincides. It has a central support 30 (not shown) connected to the holder, which is surrounded by a sleeve 31.
  • the carrier 30 is formed as a cylindrical mandrel, which at the top in a directed obliquely against the shift pen tip, cone-shaped circumferential wedge surface 32nd expires.
  • the sleeve 31 surrounds the tip of the carrier 30 with eight distributed over its circumference contacts, which are formed as separated by slots elongated contact fingers 33 made of erosion-resistant material and held together by a continuous ring 34 at the rear end of the sleeve 31.
  • the sleeve 31 is held by a screwed into the top of the carrier 30 fixing screw 35, the head of the tips of the contact fingers 33 laterally beyond, held on the carrier 30.
  • the contact fingers 33 have on their inner sides expansion surfaces 36 which abut in the closed position on the wedge surface 32 of the carrier 30. On their outer sides, the contact fingers 33 each have a step, which forms a stop surface 37, which rests in the closed position on the second switching ring 6.
  • the sleeve 31 is acted upon by a supported on the carrier 30 coil spring 38 with a directed against the tip of the shift pin elastic force.
  • the fixing screw 35, or at least her head may in turn consist of erosion-resistant material, while the sleeve 31 may be made of harness hassle spring-elastic material.
  • the contact fingers 33 are under the action of the coil spring 38 in its front end position. Just before the end of the switch-on movement abuts the stop surface 37 against the second switching ring 6, which is the movement of the contact fingers 33 in a position in which the wedge surface 32 and the expansion surfaces 36 approximately in the middle between the first switching ring 4 and the second switching ring 6 , stops.
  • the carrier 30 is under compression of the Spiral spring 38 pushed further a short distance, the wedge surface 32 abuts against the expansion surfaces 36 and the contact fingers 33 radially outwardly with their contact surfaces 39 and 40, which form a first and a second contact zone, against the inner sides of both the first switching ring 4 as also the second switching ring 6 presses.
  • the six contact fingers 33 in this case are not connected among themselves. They are held together by a retaining ring 41 on the support 30, which surrounds the same at a distance.
  • the Fixing screw 35 is cap-shaped with an obliquely against the holder, ie rearwardly facing, cone-shaped circumferential pressure surface 42 which presses against the corresponding compression surfaces 43 at the front ends of the shift finger 33 in the off movement, so that they are pressed radially inward there.
  • On a spring element which acts on the shift finger 33 with a directed against the tip of the shift pin 5 force was omitted here. With jerky start of the switch-off, the inertia of the contact fingers 33 is sufficient for a solution of the spreading of the same.
  • the parts of the switching pin can also be spread apart by electromagnetic forces.
  • the repulsion between antiparallel currents or the attraction between parallel currents is utilized. Since these forces as well as the contact lift forces increase with increasing current, the respective embodiments offer the advantage that an adequate compensation of the contact lift forces over a wide range of currents is ensured.
  • FIGS. 7a-c A sixth embodiment of the consumable switching arrangement according to the invention shown in FIGS. 7a-c corresponds in its basic structure, although with some simplifications, to the first embodiment. The consistent parts will therefore not be described again.
  • the switching pin 5 is surrounded by a slightly in front of the (not shown) support arranged sliding tulip 44, which as well as the second switching ring 6 with the second electrical connection is connected.
  • the contact fingers of the sliding tulip 44 are subjected to high mechanical loads due to electromagnetic forces during switching on and off, they can be designed to be sufficiently strong and ensure adequate contact with the switching pin 5, since they do not burn off.
  • the switching pin 5 in turn has a central carrier formed as a mandrel formed with the carrier 30, in the top of a cap 45 is screwed from erosion-resistant material, which clamps a sleeve 31 of harness philosophicaldem spring-elastic material, in particular a ring 34 at the front end thereof. From the ring 34 is a group of eight arranged at the same level on the switching pin 5, separated by slots contact pieces, which in turn are formed as elongated contact fingers 33 and here, the carrier 30 surrounding parallel, projecting backwards. The carrier 30 is surrounded by the cap 45 to beyond the ends of the contact fingers 33 out of a Isolierstoffhülse 46, with which a thicker Isolierstoffring 47 overlaps.
  • the contact surfaces 39 which lie just in front of the ends of the contact fingers 33 touch the inside of the first switching ring 4.
  • the switching pin 5 largely fills the opening thereof, as well as that of the second switching ring 6, in which the insulating ring 47 lies.
  • the current path extends from the first switching ring 4 via the contact surfaces 39 in the contact fingers 33 and through the same to the ring 34 and further through the carrier 30 and via the sliding tulip 44.
  • the front part of the carrier 30 surrounded by the contact fingers 33 forms a conductor 48, which carries an antiparallel current to the current direction in the contact fingers 33, with which it is electrically conductively connected to a connection point formed by the ring 34 , As a result of the electromagnetic repulsion thus caused between the conductor 48 and the contact fingers 33, the latter are spread apart and their contact surfaces 39 are pressed against the inside of the first switching ring 4. The contact forces generated in this way, as well as the opposite Maisabhebe specification, the stronger, the greater the current strength.
  • the region of the switching pin which is in contact with the first switching ring 4 shifts towards the cap 45, so that the length of the anti-parallel current paths decreases relatively rapidly and with them the contact forces.
  • the switching pin 5 is pulled out of the first switching ring 4
  • an arc is formed between the latter and the cap 45.
  • the cap 45 passes the second switching ring 6, the arc base jumps from the same on this, so that the arc then between the first switching ring 4 and the second switching ring 6 burns. It is blown out of the heating volume 3 and cleared at the next zero crossing.
  • the contact fingers 33 on the section 48 forming the conductor 48 (FIG Carrier 30 stored by their front ends are overlapped by an overhang of the cap 45 and its rear ends of a one-piece with the insulating sleeve 46 retaining ring 41.
  • the insulating sleeve 46 By supported on the insulating sleeve 46, approximately centrally acting on the inner sides of the contact fingers 33 compressed leaf springs 49 are pressed radially outwardly so that in the closed position, the electromagnetic forces in the application of the contact forces between the contact surfaces 39 on the outside of the contact fingers 33 and the inside of the first contact ring 4 are supported by elastic forces.
  • the switching pin 5 is made of harness meeting pressure-elastic material with, similar to the sixth and seventh embodiment, a first group of contact fingers 33 which connect to the tip of the shift pin 5 elastically outwardly bendable and after at the back.
  • contact fingers 50 of a second set grouped against the first set engage support 30, with the difference that they attach to a location offset from second support ring 6 (not shown) and are directed forwardly against the shift point tip ,
  • the serving as the approach of the contact fingers 50 of the second group with the contact fingers 33 of the first group connecting conductor 48 portion of the support 30 is in turn surrounded by a Isolierstoffhülse 46, which isolates him from the contact fingers 33, 50.
  • the switching pin 5 In the closed position of the current path runs - the switching pin 5 is insulated and connected only via the switching rings with the electrical connections - from the first switching ring 4 via the contact surfaces 39 in the contact fingers 33 of the first group, the same along the top de's switching pin 5, the junction to the conductor 48, then through this back to the second junction at the approaches of the contact fingers 50 of the second group and then further through this against the Wegstenenpitze and their contact surfaces 51 in the second switching ring 6.
  • the current path thus passes through the conductor 48 on the one hand and by the contact fingers 33 of the first group as well as the contact fingers 50 of the second group on the other hand each antiparallel, so that the contact fingers 33, 50 of both groups in the closed position by acting between the currents electromagnetic forces radially outward against the inner sides of the first switching ring. 4 b zw.
  • the second switching ring 6 are pressed.
  • each of the extensions 52a, b has a contact piece 54a or 54b with a contact surface 39 for contacting the inner surface of the first switching ring 4, with which it is connected via a connecting piece 55a or 55b such that each of the contact pieces 54a, b relative to the respective extension 52a and 52b with respect to a shift pin axis, which here coincides with the shift axis 1, offset by 180 °.
  • the connecting pieces 55a, b are designed as short, half course forming screw portions.
  • the contact pieces 54a, 54b are separated from each other by a continuation 53 'of the slot 53. Taken together they have polygonal, in the example dodecagonal cross-section.
  • the first contact piece 54 a carries an approximately hemispherical cap 45 made of erosion-resistant material, which forms the tip of the switching pin 5.
  • each of a projection 52 a or 52 b, a connector 55 a and 55 b and a contact piece 54 a and 54 b existing parts of the switching pin 5, which are made in one piece with the carrier 30 made of highly conductive resilient material, completely.
  • the contact pieces 54a, b which are connected to them and offset by 180 ° with respect to one another, are thereby pressed apart and their contact surfaces 39 are pressed even more strongly against the inside of the first switching ring 4. Due to the polygonal cross section of the switching pin 5 in the area of the contact surfaces 39, it always touches the first switching ring 4 at at least four points.
  • the contact pieces 54a, b touch the second switching ring 6 and thus close the above-described current path at least partially short. This also reduces the electromagnetic attraction between the projections 52a and 52b and the like caused by the same contact forces. The further retraction of the switching pin 5 is thus not hindered by excessive frictional forces.
  • the tip of the switching pin 5 is pulled out of the opening of the first switching ring 4, an arc is formed between these parts, which does not touch the contact pieces 54a, b.
  • the tip of the switching pin 5 passes the opening of the second switching ring 6, the arc commutates on the same. It then burns between the first switching ring 4 and the second switching ring 6 and is blown out of the heating volume 3 and cleared at the next current zero crossing.
  • the connecting piece 55b forms a central opening 56 through which the S-shaped connecting piece 55a is passed.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Contacts (AREA)
  • Circuit Breakers (AREA)
  • Breakers (AREA)

Claims (36)

  1. Arrangement de commutation anti-arc pour un commutateur à gaz comprimé comprenant un premier élément de commutation réalisé sous la forme d'une première bague de commutation (4), lequel est relié avec une première borne électrique au moins dans une position de mise en circuit, et comprenant un deuxième élément de commutation qui est relié avec une deuxième borne électrique au moins dans la position de mise en circuit et qui comprend une broche de commutation (5) fixée à une attache (11) ainsi qu'une deuxième bague de commutation (6) qui est séparée de la première bague de commutation (4) en direction d'un axe de commutation (1) par un espace d'arc électrique (7), l'attache (11) pouvant être déplacée au moyen d'un mécanisme d'entraînement de commutation le long de l'axe de commutation (1) entre la position de mise en circuit dans laquelle la broche de commutation (5) est en contact avec la première bague de commutation (4) et une position de mise hors circuit dans laquelle la broche de commutation (5) est écartée de la première (4) et de la deuxième bague de commutation (6), caractérisé en ce que la première bague de commutation (4) est configurée de manière rigide et que la broche de commutation (5) est configurée ou maintenue de telle sorte que, sous l'effet des forces de contact produites de manière mécanique et/ou électromécanique, elle pousse en position de mise en circuit avec une première zone de contact contre la première bague de commutation (4) et en position de mise en circuit et/ou lors de la mise hors circuit avec une deuxième zone de contact contre le côté intérieur de la deuxième bague de commutation (6).
  2. Arrangement de commutation anti-arc selon la revendication 1, caractérisé en ce que la broche de commutation (5), en position de mise en circuit, est déviée par effet élastique ou déformée par effet élastique du fait du contact avec le premier élément de commutation.
  3. Arrangement de commutation anti-arc selon la revendication 2, caractérisé en ce que la broche de commutation (5), en position de mise en circuit, est déviée par effet élastique du fait du déplacement latéral transversalement par rapport à l'axe de commutation (1).
  4. Arrangement de commutation anti-arc selon l'une des revendications 1 à 3, caractérisé en ce que la broche de commutation (5) peut basculer autour d'un axe de basculement, dirigé transversalement par rapport à l'axe de commutation (1) et qui, en position de mise en circuit, se trouve entre la première bague de commutation (4) et la deuxième bague de commutation (6), de telle sorte qu'elle pousse avec la première zone de contact contre le côté intérieur de la première bague de commutation (4) et en même temps avec la deuxième zone de contact contre le côté intérieur de la deuxième bague de commutation (6).
  5. Arrangement de commutation anti-arc selon la revendication 4, caractérisé en ce que la broche de commutation (5) est reliée à l'attache (11) par le biais d'une articulation à travers laquelle passe l'axe de basculement.
  6. Arrangement de commutation anti-arc selon la revendication 5, caractérisé en ce que l'articulation est montée à l'extrémité d'une tige élastique (10) reliée de manière rigide avec l'attache (11).
  7. Arrangement de commutation anti-arc selon la revendication 4, caractérisé en ce que la broche de commutation (5) est fixée de manière rigide à une pièce de liaison qui relie celle-ci à l'attache (11), ce qui permet à la fois la déviation latérale par effet élastique de la broche de commutation (5) et une déviation rotative de celle-ci par effet élastique autour de l'axe de basculement.
  8. Arrangement de commutation anti-arc selon la revendication 7, caractérisé en ce que la pièce de liaison est un élément ressort élastique; notamment un ressort à lame (21).
  9. Arrangement de commutation anti-arc selon l'une des revendications 2 à 8, caractérisé en ce que la broche de commutation (5), en position de mise en circuit, est soutenue au niveau de l'attache par un élément ressort comprimé par effet élastique en direction de l'axe de commutation (1).
  10. Arrangement de commutation anti-arc selon la revendication 9, caractérisé en ce que la deuxième bague de commutation (6) peut être déviée par effet élastique contre la première bague de commutation (4) et, en position de mise en circuit, la broche de commutation (5) pousse contre le premier élément de commutation avec une surface de choc dirigée vers celui-ci.
  11. Arrangement de commutation anti-arc selon la revendication 10, caractérisé en ce que la deuxième bague de commutation (6) est divisée en secteurs (26) qui sont chacun fixés au bord intérieur d'un secteur correspondant (29) d'un disque annulaire (25), les secteurs (29) voisins étant à chaque fois séparés par une fente (28) non continue partant du bord intérieur.
  12. Arrangement de commutation anti-arc selon la revendication 11, caractérisé en ce que les fentes (28) s'étendent dans le sens radial.
  13. Arrangement de commutation anti-arc selon l'une des revendications 1 à 12, caractérisé en ce que la broche de commutation (5) comprend un support (30) relié avec l'attache (11) et, dans la zone d'au moins une zone de contact, se compose d'au moins deux parties dont l'une au moins est un élément de contact qui est mobile de manière limitée dans le sens radial par rapport à l'autre partie et qui, en position de mise en circuit, est repoussé par les forces de contact de celle-ci de manière à ce qu'il pousse contre le côté intérieur au moins de la première bague de commutation (4) avec une surface de contact (39) sur son côté extérieur à l'opposé de l'autre partie.
  14. Arrangement de commutation anti-arc selon la revendication 13, caractérisé en ce que la broche de commutation (5) présente, dans la région de la zone de contact, un groupe de deux éléments de contact ou plus entourant un axe de broche de commutation et disposé à une distance axiale approximativement égale de la pointe de la broche de commutation (5).
  15. Arrangement de commutation anti-arc selon la revendication 13 ou 14, caractérisé en ce que le support (30) s'étend jusque dans la zone de contact.
  16. Arrangement de commutation anti-arc selon la revendication 15, caractérisé en ce que le groupe d'éléments de contact est disposé de manière à entourer le support (30).
  17. Arrangement de commutation anti-arc selon l'une des revendications 14 à 16, caractérisé en ce que les éléments de contact sont les pièces d'une douille (31) monobloc.
  18. Arrangement de commutation anti-arc selon l'une des revendications 13 à 17, caractérisé en ce que le support (30) présente une surface de calage (32) dirigée en biais vers la pointe de la broche de commutation (5) et l'au moins un élément de contact est mobile dans le sens axial au moins de manière limitée par rapport au support (30) et repose avec une surface d'écartement (36) contre la surface de calage (32) du support (30) de manière à ce qu'en position de mise en circuit, il soit écarté par le support (30) sous l'effet de la surface de calage (32) sur la surface d'écartement (36).
  19. Arrangement de commutation anti-arc selon la revendication 18, caractérisé en ce que l'au moins un élément de contact présente sur son côté extérieur une surface de butée (37) dirigée vers la pointe de la broche de commutation (5) destinée à interagir avec une butée.
  20. Arrangement de commutation anti-arc selon la revendication 18 ou 19, caractérisé en ce que l'au moins un élément de contact est soumis par rapport au support (30) à une force élastique dirigée vers la pointe de la broche de commutation (5).
  21. Arrangement de commutation anti-arc selon la revendication 20, caractérisé en ce que la force élastique est appliquée par un élément ressort qui s'appuie sur le support (30).
  22. Arrangement de commutation anti-arc selon l'une des revendication 13 à 21, caractérisé en ce que le support (30) présente une surface de pression (42) dirigée en biais vers l'attache (11) qui est à l'opposé d'une surface de compression (43) de l'au moins un élément de contact.
  23. Arrangement de commutation anti-arc selon l'une des revendications 18 à 22, caractérisé en ce que la surface de calage (32) est disposée sur le support (30) en l'entourant à la manière d'une aire latérale de cône.
  24. Arrangement de commutation anti-arc selon l'une des revendications 13 à 23, caractérisé en ce qu'en position de mise en circuit, seule la surface de contact (39 ; 51) de l'au moins un élément de contact est en contact avec une bague de commutation (4 ; 6) et est reliée électriquement uniquement en un point de liaison, lequel est décalé dans le sens axial par rapport à la surface de contact (39 ; 51), avec un conducteur (48) de la broche de commutation (5) parallèle à l'au moins un élément de contact et en contact électrique avec la deuxième borne de telle sorte que le chemin du courant passe par le conducteur (48), le point de liaison et ensuite en sens inverse par l'élément de contact.
  25. Arrangement de commutation anti-arc selon l'une des revendications 1 à 24, caractérisé en ce qu'il présente au moins deux éléments de contact décalés l'un par rapport à l'autre dans le sens axial, au moins un élément de contact, en position de mise en circuit, étant en contact par sa surface de contact (39) avec la première bague de commutation (4) et au moins un élément de contact décalé dans le sens axial par rapport à celui-ci étant en contact par sa surface de contact (51) avec la deuxième bague de commutation (6) et le conducteur (48) étant relié avec les éléments de contact au niveau de points de liaison décalés vers la pointe de la broche de commutation (5) ou vers l'attache (11).
  26. Arrangement de commutation anti-arc selon la revendication 24 ou 25, caractérisé en ce que le conducteur (48) est formé par une section du support (30).
  27. Arrangement de commutation anti-arc selon l'une des revendications 14 à 17, caractérisé en ce que les éléments de contact (54a ; 54b) sont disposés sur des prolongements (52a ; 52b) parallèles mobiles l'un par rapport à l'autre dans le sens radial au moins de manière limitée de telle sorte que la surface de contact (39) est à chaque fois décalée vis-à-vis du prolongement (52a ; 52b) d'un angle > 90°, notamment de 180° par rapport à l'axe de la broche de commutation.
  28. Arrangement de commutation anti-arc selon la revendication 27, caractérisé en ce que les prolongements (52a ; 52b) sont flexibles par effet élastique en direction de l'axe de la broche de commutation.
  29. Arrangement de commutation anti-arc selon la revendication 27 ou 28, caractérisé en ce que chaque élément de contact (54a ; 54b) est relié avec le prolongement (52a ; 52b) qu'il porte par un élément de liaison (55a ; 55b) qui suit une hélice.
  30. Arrangement de commutation anti-arc selon l'une des revendications 27 à 29, caractérisé en ce que les prolongements (52a ; 52b) et les éléments de contact (54a, 54b) se raccordent d'une seule pièce avec ceux-ci à l'extrémité du support (30).
  31. Arrangement de commutation anti-arc selon l'une des revendications 27 à 30, caractérisé en ce que la broche de commutation (5) présente deux éléments de contact (54a ; 54b) opposés l'un à l'autre.
  32. Arrangement de commutation anti-arc selon la revendication 31, caractérisé en ce qu'un élément de contact (54b) est relié avec le prolongement (52b) qu'il porte par un élément de liaison (55b) qui présente une ouverture centrale (56) traversante transversalement par rapport à l'axe de la broche de commutation et l'autre élément de contact (54a) avec le prolongement (52a) qu'il porte par le biais d'un élément de liaison (55a) qui passe à travers ladite ouverture (56).
  33. Arrangement de commutation anti-arc selon l'une des revendication 13 à 32, caractérisé en ce qu'au moins un élément de contact, en position de mise en circuit, n'est en contact qu'avec la première bague de commutation (4), mais son extension axiale correspond toutefois au moins à la longueur de l'espace d'arc électrique (7) de sorte que pendant le mouvement de mise hors circuit, il entre en contact temporairement à la fois avec la première bague de commutation (4) et avec la deuxième bague de commutation (6).
  34. Arrangement de commutation anti-arc selon l'une des revendications 1 à 33, caractérisé en ce que la broche de commutation (5), en position de mise en circuit, remplit au moins quasiment l'ouverture de la deuxième bague de commutation (6).
  35. Arrangement de commutation anti-arc selon la revendication 34, caractérisé en ce que le diamètre de l'ouverture de la première bague de commutation (4) est inférieur au diamètre de l'ouverture de la deuxième bague de commutation (6) et qu'en position de mise en circuit, la pointe de la broche de commutation (5) remplit au moins quasiment l'ouverture de la première bague de commutation (4) et la broche de commutation (5) se rétrécit graduellement entre la deuxième bague de commutation (6) et la première bague de commutation (4).
  36. Arrangement de commutation anti-arc selon l'une des revendications 1 à 35, caractérisé en ce que la section transversale de la broche de commutation (5) présente un contour au moins approximativement polygonal dans la région d'au moins une zone de contact.
EP99810169A 1998-04-14 1999-03-01 Ensemble de contacts d'arc Expired - Lifetime EP0951029B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19816507A DE19816507A1 (de) 1998-04-14 1998-04-14 Abbrandschaltanordnung
DE19816507 1998-04-14

Publications (3)

Publication Number Publication Date
EP0951029A2 EP0951029A2 (fr) 1999-10-20
EP0951029A3 EP0951029A3 (fr) 2000-06-07
EP0951029B1 true EP0951029B1 (fr) 2006-03-01

Family

ID=7864484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99810169A Expired - Lifetime EP0951029B1 (fr) 1998-04-14 1999-03-01 Ensemble de contacts d'arc

Country Status (5)

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US (1) US6100489A (fr)
EP (1) EP0951029B1 (fr)
JP (1) JP4365473B2 (fr)
CN (1) CN1183570C (fr)
DE (2) DE19816507A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19816508A1 (de) * 1998-04-14 1999-10-21 Asea Brown Boveri Abbrandschaltanordnung
DE102005019424A1 (de) * 2005-04-25 2006-11-02 Abb Technology Ag Lasttrennschalter
DE102006016723A1 (de) * 2006-04-04 2007-10-11 Siemens Ag Lichtbogenkontaktstift
JP4684373B1 (ja) * 2010-02-04 2011-05-18 三菱電機株式会社 ガス遮断器
CN102714112B (zh) * 2010-02-04 2016-01-27 三菱电机株式会社 气体断路器
EP2455957B1 (fr) * 2010-11-22 2014-03-26 ABB Research Ltd. Système de disjoncteur à isolation gazeuse
DE102013106727B4 (de) * 2013-06-26 2015-08-06 Doduco Gmbh Kontaktstift für Hochspannungs-Leistungsschalter, Verfahren zu seiner Herstellung und Hochspannungs-Leistungsschalter mit einem solchen Kontaktstift
FR3028089B1 (fr) * 2014-10-30 2016-12-30 Alstom Technology Ltd Interrupteur ou disjoncteur a moyenne ou haute tension, pourvu de contacts fixes ameliores, et procede d'utilisation

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1531917A (en) * 1922-11-11 1925-03-31 Gen Electric Electric switch
DE893361C (de) * 1943-11-05 1953-10-15 Aeg Hochspannungstrennschalter, vorzugsweise in Einstuetzerausfuehrung
US2580910A (en) * 1949-02-08 1952-01-01 S & C Electric Co Contact construction
DE1220927B (de) * 1963-08-23 1966-07-14 Siemens Ag Elektrischer Schalter
DE1765932A1 (de) * 1968-08-09 1971-11-18 Siemens Ag Kontaktanordnung fuer elektrische Schalter
SE429178B (sv) * 1981-12-23 1983-08-15 Asea Ab Instickskontaktdon
DE3440212A1 (de) * 1984-10-10 1986-04-17 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
US4668848A (en) * 1985-07-24 1987-05-26 S&C Electric Company Alignment and centering arrangement for contacts of an interrupting device
US5298704A (en) * 1992-12-16 1994-03-29 S&C Electric Company Contact operating arrangement with shock-reducing feature for high-voltage apparatus
DE19613569A1 (de) * 1996-04-04 1997-10-09 Asea Brown Boveri Leistungsschalter

Also Published As

Publication number Publication date
EP0951029A2 (fr) 1999-10-20
US6100489A (en) 2000-08-08
JP4365473B2 (ja) 2009-11-18
CN1234593A (zh) 1999-11-10
EP0951029A3 (fr) 2000-06-07
DE59913176D1 (de) 2006-04-27
CN1183570C (zh) 2005-01-05
JPH11329175A (ja) 1999-11-30
DE19816507A1 (de) 1999-10-21

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