EP2717283B1 - Dispositif de commutation électrique avec de multiples contacts nominaux et procédé de fabrication du dispositif de commutation électrique - Google Patents

Dispositif de commutation électrique avec de multiples contacts nominaux et procédé de fabrication du dispositif de commutation électrique Download PDF

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Publication number
EP2717283B1
EP2717283B1 EP12187032.3A EP12187032A EP2717283B1 EP 2717283 B1 EP2717283 B1 EP 2717283B1 EP 12187032 A EP12187032 A EP 12187032A EP 2717283 B1 EP2717283 B1 EP 2717283B1
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EP
European Patent Office
Prior art keywords
contact
contacting area
switching device
nominal
finger
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.)
Not-in-force
Application number
EP12187032.3A
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German (de)
English (en)
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EP2717283A1 (fr
Inventor
Jadran Kostovic
Jakub Korbel
Martin Kriegel
Navid Mahdizadeh
Nicola Gariboldi
Sami Kotilainen
Xiangyang Ye
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
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ABB Schweiz AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ABB Schweiz AG filed Critical ABB Schweiz AG
Priority to EP12187032.3A priority Critical patent/EP2717283B1/fr
Publication of EP2717283A1 publication Critical patent/EP2717283A1/fr
Application granted granted Critical
Publication of EP2717283B1 publication Critical patent/EP2717283B1/fr
Not-in-force legal-status Critical Current
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
    • H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
    • 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

Definitions

  • the invention relates to the field of medium and high voltage switching technologies and concerns an electrical switching device and a method for manufacturing said electrical switching device according to the independent claims.
  • the electrical switching device is particularly used as an earthing device, a fast-acting earthing device, a circuit breaker or a switch disconnector in power transmission or distribution systems.
  • Electrical switching devices are well known in the field of medium and high voltage switching applications. They are e.g. used for interrupting a current, when an electrical fault occurs.
  • circuit breakers have the task of opening contacts and keeping them far apart from one another in order to avoid a current flow, even in case of high electrical potential originating from the electrical fault itself.
  • medium voltage refers to voltages from 1 kV to 72.5 kV
  • high voltage refers to voltages higher than 72.5 kV.
  • the electrical switching devices may have to be able to carry high nominal currents of 5000 A to 6300 A and to switch very high short circuit currents of 63 kA to 80 kA at very high voltages of 550 kV to 1200 kV.
  • WO 2006/063943 A1 discloses an electrical contact arrangement comprising a first contact point and a second contact point. Adjacent contact regions of the first contact point are staggered in relation to each other. Each contact region is formed by a contact finger. Thus, each contact finger contacts the second contact point in one area which is displaced relatively to the respective contacting areas of adjacent fingers.
  • EP 1 973 202 A1 discloses a contact system for low voltage applications with a multiple contact surface.
  • a contact spring is formed in such a way that it contacts the contact surface simultaneously in two different areas.
  • JP 1187716 discloses a contacting device for an electrical motor.
  • JP 1187716 discloses a plate-like contacting piece 2 consisting of flat conductive material and having cut parts 2a, 2b, 2b for receiving energizing members or springs 4, 5 which press the contacting plate 2 as a whole radially inwards.
  • a method for manufacturing said electrical switching device comprising the step of grinding the first and the second contacting area of the contact fingers of the finger cage by means of a cylindrical grinder with an outer diameter being equal to an outer diameter of the second nominal contact.
  • the first and the second contacting area are heated up less as compared to a single contacting area receiving the entire nominal current or short circuit current, because each of them conducts a lower current. This results in a significantly lower damage of the contact surface, thus prolonging the life of the contact arrangement.
  • the method for manufacturing the electrical switching device has the advantage that the radial positions, with respect to the longitudinal axis, of the first and the second contacting areas are mutually adjusted.
  • a cylindrical grinder having an outer diameter which is equal to the one of the second nominal contact, it is made sure that all first and second contacting areas have a shape which matches the outer shape of the cylindrical second nominal contact.
  • the surfaces of the first and the second contacting area have the same curvature as the outer surface of the second nominal contact, which normally is a metal rod, thus ensuring an optimum contact of the first contact finger to the second nominal contact.
  • all contact fingers of the finger cage are formed like the first contact finger, i.e. all fingers have the same shape.
  • all contact fingers have at least a first and a second contacting area which are formed in the same way as the respective contacting areas of the first contact finger. This advantageously results in a substantially uniform distribution of the current through all contact fingers.
  • the invention is described for the example of a high voltage circuit breaker, but the principles described in the following also apply for the usage of the invention in other switching devices, e.g. of the type mentioned above, such as a disconnector, earthing switch, combined disconnector and earthing switch, load-break switch, fast-acting earthing switch, generator circuit breaker, medium voltage circuit breaker, high-voltage circuit breaker, or the like.
  • switching devices e.g. of the type mentioned above, such as a disconnector, earthing switch, combined disconnector and earthing switch, load-break switch, fast-acting earthing switch, generator circuit breaker, medium voltage circuit breaker, high-voltage circuit breaker, or the like.
  • Fig. 1 shows a partial sectional view of a simplified basic high voltage circuit breaker 1 in a closed configuration.
  • "partial sectional view” means that only the upper half of the circuit breaker is shown, for reasons of clarity.
  • the device is rotationally symmetric about a longitudinal axis z. Only the elements of the circuit breaker 1 which are related to the present invention are described in the following, other elements present in the figures are not relevant for understanding the invention and are known by the skilled person in high voltage electrical engineering.
  • a "closed configuration" as used herein means that nominal contacts of the circuit breaker are closed and are thus conducting a current, in particular a nominal current.
  • the circuit breaker 1 comprises a chamber enclosed by a shell or housing 5 which normally is cylindrical around the longitudinal axis z. It further comprises a nominal contact arrangement formed by a first nominal contact comprising a plurality of contact fingers 3a, of which only one is shown here for reasons of clarity, formed as a finger cage around the longitudinal axis z. A shielding 9 is arranged around the finger cage.
  • the nominal contact arrangement further comprises a second mating contact 3b which normally is a metal tube.
  • the contact fingers 3a and the second contact 3b are movable relatively to one another from the closed configuration shown in Fig. 1 , in which they are in electrical contact to one another, into an opened configuration, in which they are apart from one another, and vice versa. It is also possible that only one of the contacts 3a, 3b moves parallel to the longitudinal axis z and the other contact 3b, 3a is stationary.
  • the contact fingers 3a are attached to or can be a part of a finger support 2, particularly a metal support cylinder 2.
  • the circuit breaker 1 furthermore comprises an arcing contact arrangement formed by a first arcing contact 4a and a second arcing contact 4b.
  • the first nominal contact 3a and the first arcing contact 4a may or may not be movable and typically are not movable relatively to one another.
  • the second nominal contact 3b and the second arcing contact 4b may or may not be movable and typically are not movable with respect to one another.
  • the second nominal contact 3b and the second arcing contact 4b are moved parallel to the direction of the z-axis into the direction indicated by the z-arrow, such that the nominal contact arrangement 3a, 3b disconnects first. Thereafter, the current commutates to the arcing contact arrangement 4a, 4b, which is still closed. With further movement of the second nominal contact 3b and the second arcing contact 4b into said direction, the arcing contact arrangement 4a, 4b also disconnects thereby creating an electric arc between the arcing contacts 4a, 4b, which is normally blasted out in a very short time.
  • Fig. 2 shows a sectional view of a nominal contact finger 3a of a finger cage of the high voltage circuit breaker of Fig. 1 in a closed configuration of the circuit breaker.
  • the nominal contact finger 3a of a first nominal contact contacts a second nominal contact 3b in a contacting area 6a of the contact finger 3a.
  • a current I flows from the second nominal contact 3b through the contacting area 6a into the contact finger 3a of the first nominal contact, which current flow is denoted by the two arrows.
  • the contacting area 6a is relatively small.
  • the contact finger 3a heats up at and around the contacting area 6a. With regard to the contact heat, it must be made sure that a prescribed maximum value of about 105°C is not exceeded.
  • Fig. 3 shows a sectional view of a comparative embodiment of a first contact finger 3c which is not according to the invention.
  • the second nominal contact 3b can be identical to the one of Fig. 2 , and thus it will not be described in more detail.
  • the first contact finger 3c has two arc-shaped contacts which contact the second nominal contact 3b in a first contacting area 6 and a second contacting area 7, respectively.
  • the first and the second contacting area 6, 7 are separated by a third area 8 which has no mechanical and/or electrical contact with the second nominal contact 3b, as illustrated in Fig. 3 .
  • the two contacts which refer here to the curvature parts of the first contact finger 3c, have the shape of an arc, or at least a rounded shape, on the side facing the second nominal contact 3b, in order to glide easier over the second nominal contact 3b when the circuit breaker is being closed.
  • the finger cage not shown here, has a slightly smaller diameter than the second nominal contact 3b, which is a metal tube as mentioned above, in order to exert a pressure on the second nominal contact 3b, which pressure is high enough to ensure a good mechanical and electrical contact.
  • the contact fingers 3c of the finger cage are elastically deformed in a radial direction upon closing the circuit breaker.
  • the first contact finger 3c is formed in such a way, that the electrical and mechanical contact with the second nominal contact 3b occurs first in the first contacting area 6 and subsequently in the second contacting area 7, when the electric switching device, here the circuit breaker, is being closed.
  • the electrical and mechanical contact with the second nominal contact 3b is lost first in the second contacting area 7 and is subsequently lost in the first contacting area 6.
  • a small electric arc is formed between the second nominal contact 3b and the first contacting area 6 just before the current commutates to the arcing contacts 4a, 4b.
  • the first contacting area 6 has to be made of a material which is comparatively resistant to electrical commutating arcs.
  • the first contact finger 3c is advantageously made of copper, at least in a section conducting a first current, here denotes by 1/2, through the first contacting area 6.
  • the first contact finger 3c is made of aluminium at least in a section conducting a second current, here denotes by 1/2, through the second contacting area 7.
  • the overall cost of the circuit breaker is reduced, because the cheaper aluminium can be used for the conducting section of the second contacting area 7.
  • An additional measure can be to coat the contact surface of both the first and the second contacting area 6, 7 with silver.
  • Fig. 4 shows a sectional view of a first aspect of a first contact finger 3c according to the invention.
  • the first contact finger 3c has at least a first subfinger 11a and a second subfinger 11b.
  • the first contacting area 6 is formed on the first subfinger 11a and the second contacting area 7 is formed on the second subfinger 11b.
  • the first contact finger 3c is typically relatively stiff, such that a problem may arise that the second contacting area 7 has a better contact to the second nominal contact 3b than the first contacting area 6, or vice versa.
  • the length of the subfingers 11a, 11b is chosen in such a way that the stiffness of the first contact finger 3c is reduced, and in particular that the stiffness of the first subfingers 11a and the second subfingers 11b are reduced and their contact forces are made more equal.
  • Another additional or alternative measure to ensure a good contact of the subfingers 11a, 11b to the second nominal contact 3b is to adjust the angle between the first and the second subfinger 11a, 11b depending on the geometry of the finger cage and of the second nominal contact 3b. If e.g. the contact fingers are arranged in a cone configuration, said angle has to be wider than in a cylindrical configuration, because in the cone configuration the second subfinger 11b is farther away from the second nominal contact 3b than the first subfinger 11a.
  • Another additional or alternative measure to ensure a good contact of the subfingers 11a, 11b to the second nominal contact 3b is to adjust the thickness of each subfinger 11a, 11b according to its position as seen in longitudinal direction.
  • Fig. 5 shows a sectional view of another aspect of a first contact finger 3c according to the invention.
  • the first contact finger 3c forms an arcuate section 10 between the first and the second contacting area 6, 7.
  • the arcuate section 10 has a current path which is longer than a distance (i.e. direct or shortest distance) between the first and the second contacting area 6, 7.
  • the length and/or shape of the arcuate section 10 is adjusted to decrease the stiffness of the first contact finger 3c. The longer the arcuate section 10 is chosen, the more flexible is the first contact finger 3c. Additionally or alternatively, the distance between the first and the second contacting area 6, 7 is kept as small as possible.
  • Fig. 6 shows a sectional view of a comparative example of a first contact finger 3c.
  • the first contact finger 3c has electrical and mechanical contact with the second nominal contact 3b in the first, the second and a fourth contacting area 6, 7, 7a of the first contact finger 3c when the electric switching device is closed.
  • the first, the second and the fourth contacting area 6, 7, 7a are separated from one another by two third areas 8.
  • the first, second and fourth contacting area 6, 7, 7a correspond to a first, a second and a fourth arc-shaped contact 13a, 13b, 13c respectively.
  • the contacts may be attached to or be a part of the first contact finger 3c. In an embodiment of the invention, they may also be arranged in a way similar to the embodiment of Fig.
  • each contacting area 6 7, 7a may each be part of a subfinger of the first contact finger 3c.
  • This alternative embodiment is herewith disclosed, as well.
  • This arrangement with three contacting areas 6, 7, 7a further reduces the current 1/3 conducted by each contacting area 6, 7, 7a.
  • the current travelling through each contacting area is calculated as the total current I divided by the number of contacting areas, provided that the current paths through each subfinger or contact have the same electric impedance.
  • Fig. 7 shows a sectional view of another embodiment of a first contact finger 3c according to the invention.
  • the first contact finger 3c has at least a first subfinger 11a and a second subfinger 11b.
  • the first contacting area 6 is formed on the first subfinger 11a and the second contacting area 7 is formed on the second subfinger 11b.
  • the first contact finger 3c is formed in such a way that the first contacting area 6 contacts a radial surface of second nominal contact 3b and the second contacting area 7 contacts an axial end surface 12 of the second nominal contact 3b.
  • the radial surface of the second nominal contact 3b is herein defined as the outer surface of the cylinder forming the second nominal contact 3b, that is, a surface arranged at a substantially constant, in particular constant, radius from the longitudinal axis z.
  • the axial surface 12 is herein defined as a surface extending from an end of the radial surface of the second nominal contact 3b towards the longitudinal axis z, that is a surface arranged at a substantially constant, in particular constant, axial position along the longitudinal axis z.
  • Fig. 8 shows a schematic sectional view of a cylindrical grinder G.
  • the grinder G which advantageously has the same diameter like the second nominal contact 3b, is inserted into the finger cage and rotates with respect to the longitudinal axis z in order to grind the first and the second contacting areas 6, 7.
  • said contacting areas 6, 7 are equalized and it is thus ensured that they have the same diameter like the second nominal contact 3b.
  • the first and the second contacting areas 6, 7 have the same curvature like the second nominal contact 3b after grinding. This advantageously improves the conductivity performance by ensuring a maximal contact surface between the first contacting area 6 and the second nominal contact 3b and between the second contacting area 7 and the second nominal contact 3b.
  • the contact fingers 3c are relatively stiff, as mentioned above, they still have a certain elasticity, which is desired in order to ensure a pressing force on the second nominal contact 3b when it is inserted into the nominal contact finger cage 3c.
  • Said means may for example be supporting means forming a sleeve (not shown) around the finger cage and supporting outer surfaces 14 of the contact fingers 3c against a radial force acting radially away from the longitudinal axis z and being exerted by the grinder during the grinding process.
  • the second nominal contact 3b may also have another shape, for example a cone shape.
  • the tubular shape of the nominal contact finger cage 3c can be derived e.g. from Fig. 6 , where the first contact finger 3c is parallel to the second nominal contact 3b.
  • a cone-shaped nominal contact finger cage 3c can be derived e.g. from Fig. 4 , in which the first contact finger 3c is inclined with respect to the second nominal contact 3b.
  • the present invention is directed to the implementation of modified contact fingers 3c of a finger cage of a first nominal contact.
  • the modified contact fingers of the present invention have each multiple contacting areas 6, 7, 7a in order to divide the current path I between the nominal contacts 3b and 3c, thus reducing the transitional currents flowing through each contacting area 6, 7, 7a.
  • the overall contacting area which is a sum of the separate contacting areas 6, 7, 7a, is increased, resulting in a lower electrical resistance and thus better thermal conductivity and heat removal. Not only is the heat generation during current flow through the contacting areas 6, 7, 7a transferred or removed faster, but also the amount of heat generation is decreased. As a result, the lifetime of the nominal contact fingers 3c and 3b is prolonged.

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  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (15)

  1. Dispositif de commutation électrique (1) pour circuits moyenne ou haute tension,
    ayant au moins un agencement de contact nominal, l'agencement de contact nominal comprenant
    a) au moins un premier contact nominal comprenant une pluralité de doigts de contact (3c) formant une cage à doigts concentrique par rapport à un axe longitudinal (z), et
    b) au moins un deuxième contact nominal d'accouplement (3b),
    au moins l'un des contacts nominaux (3c, 3b) étant mobile parallèlement à l'axe longitudinal (z) et coopérant avec l'autre contact nominal (3b, 3c) pour fermer et ouvrir ledit dispositif de commutation électrique (1),
    au moins un premier doigt de contact (3c) étant formé de telle sorte qu'il a un contact électrique et mécanique avec le deuxième contact nominal (3b) dans au moins une première zone de contact (6) et une deuxième zone de contact (7) du premier doigt de contact (3c) lorsque le dispositif de commutation électrique (1) est fermé, les première et deuxième zones de contact (6, 7) étant séparées l'une de l'autre par une troisième zone (8), la troisième zone (8) n'étant pas en contact mécanique avec le deuxième contact nominal (3b),
    caractérisé en ce que le premier doigt de contact (3c) a au moins un premier et un deuxième sous-doigt (11a, 11b), la première zone de contact (6) étant formée sur le premier sous-doigt (11a) et la deuxième zone de contact (7) étant formée sur le deuxième sous-doigt (11b), ou
    caractérisé en ce que
    le premier doigt de contact (3c) a une section arquée (10) entre la première et la deuxième zone de contact (6, 7), la section arquée (10) ayant un trajet de courant qui est plus long qu'une distance directe entre la première et la deuxième zone de contact (6, 7) .
  2. Dispositif de commutation électrique selon la revendication 1, tous les doigts de contact de la cage à doigts ayant la même forme que le premier doigt de contact (3c).
  3. Dispositif de commutation électrique selon la revendication 1 ou 2, le premier doigt de contact (3c) ayant un contact électrique et mécanique avec le deuxième contact nominal (3b) dans la première zone de contact (6), la deuxième zone de contact (7) et une quatrième zone de contact (7a) du premier doigt de contact (3c) lorsque le dispositif de commutation électrique (1) est fermé, les première, deuxième et quatrième zones de contact (6, 7, 7a) étant séparées les unes des autres par deux troisièmes zones (8).
  4. Dispositif de commutation électrique selon l'une des revendications précédentes, le premier doigt de contact (3c) étant formé de telle sorte que le contact électrique et mécanique avec le deuxième contact nominal (3b) se produit d'abord dans la première zone de contact (6) et ensuite dans la deuxième zone de contact (7), lorsque le dispositif de commutation électrique (1) est fermé.
  5. Dispositif de commutation électrique selon l'une des revendications précédentes et selon la première alternative de la revendication 1,
    le premier doigt de contact (3c) ayant au moins le premier et le deuxième sous-doigt (11a, 11b), la première zone de contact (6) étant formée sur le premier sous-doigt (11a) et la deuxième zone de contact (7) étant formée sur le deuxième sous-doigt (11b) et le premier doigt de contact (3c) étant formé en outre de telle manière que la première zone de contact (6) entre en contact avec une surface radiale du deuxième contact nominal (3b) et la deuxième zone de contact (7) entre en contact avec une surface d'extrémité axiale (12) du deuxième contact nominal (3b).
  6. Dispositif de commutation électrique selon la revendication 5, la surface radiale du deuxième contact nominal (3b) étant définie comme la surface extérieure du cylindre formant le deuxième contact nominal (3b), c'est-à-dire une surface disposée à un rayon sensiblement constant, en particulier constant, de l'axe longitudinal (z), et la surface axiale (12) étant définie comme une surface s'étendant d'une extrémité de la surface radiale du deuxième contact nominal (3b) vers l'axe longitudinal (z), qui est une surface disposée en position axiale sensiblement constante, en particulier constante, le long de l'axe longitudinal (z).
  7. Dispositif de commutation électrique selon l'une des revendications précédentes, le premier doigt de contact (3c) étant en cuivre au moins dans une section conduisant un premier courant (I/2 ; I/3) à travers la première zone de contact (6).
  8. Dispositif de commutation électrique selon l'une des revendications précédentes, le premier doigt de contact (3c) étant en aluminium au moins dans une section conduisant un deuxième courant (I/2 ; I/3) à travers la deuxième zone de contact (7).
  9. Dispositif de commutation électrique selon l'une des revendications précédentes, une surface de contact de la première zone de contact (6) étant revêtue d'argent.
  10. Dispositif de commutation électrique selon l'une des revendications précédentes, une surface de contact de la deuxième zone de contact (7) étant revêtue d'argent.
  11. Dispositif de commutation électrique selon l'une des revendications précédentes, lesdits doigts de contact (3c) étant déformés élastiquement dans une direction radiale lors de la fermeture dudit dispositif de commutation (1).
  12. Dispositif de commutation électrique selon la revendication 3, et selon la première alternative de la revendication 1, le premier doigt de contact (3c) ayant au moins le premier et le deuxième sous-doigt (11a, 11b),
    la première zone de contact (6) étant formée sur le premier sous-doigt (11a) et la deuxième zone de contact (7) étant formée sur le deuxième sous-doigt (11b), la première zone de contact (6), la deuxième zone de contact (7) et la quatrième zone de contact (7a) correspondant respectivement à un premier, un deuxième et un quatrième contact en arc (13a, 13b, 13c) et faisant chacune partie d'un sous-doigt du premier doigt (3c).
  13. Dispositif de commutation électrique selon l'une quelconque des revendications précédentes, le courant traversant chaque zone de contact étant calculé comme un courant total I divisé par le nombre de zones de contact, à condition que les trajets de courant traversant chaque sous-doigt aient la même impédance électrique.
  14. Procédé de fabrication d'un dispositif de commutation électrique (1) selon l'une des revendications précédentes, comprenant l'étape de rectification des première et deuxième zones de contact (6, 7) des doigts de contact (3c) de la cage à doigts au moyen d'une rectifieuse cylindrique (G) dont le diamètre extérieur est égal au diamètre extérieur du deuxième contact nominal (3b).
  15. Utilisation du dispositif de commutation électrique (1) selon l'une quelconque des revendications 1 à 13 en tant que : interrupteur de mise à la terre, interrupteur de mise à la terre à action rapide, sectionneur, sectionneur combiné et interrupteur de mise à la terre, interrupteur de coupure de charge, disjoncteur de circuit de générateur, disjoncteur de circuit moyenne tension ou disjoncteur de circuit haute tension.
EP12187032.3A 2012-10-02 2012-10-02 Dispositif de commutation électrique avec de multiples contacts nominaux et procédé de fabrication du dispositif de commutation électrique Not-in-force EP2717283B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12187032.3A EP2717283B1 (fr) 2012-10-02 2012-10-02 Dispositif de commutation électrique avec de multiples contacts nominaux et procédé de fabrication du dispositif de commutation électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12187032.3A EP2717283B1 (fr) 2012-10-02 2012-10-02 Dispositif de commutation électrique avec de multiples contacts nominaux et procédé de fabrication du dispositif de commutation électrique

Publications (2)

Publication Number Publication Date
EP2717283A1 EP2717283A1 (fr) 2014-04-09
EP2717283B1 true EP2717283B1 (fr) 2019-07-24

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EP12187032.3A Not-in-force EP2717283B1 (fr) 2012-10-02 2012-10-02 Dispositif de commutation électrique avec de multiples contacts nominaux et procédé de fabrication du dispositif de commutation électrique

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3091547B1 (fr) * 2015-05-07 2018-07-04 ABB Schweiz AG Disjoncteur

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002400A (en) * 1975-08-01 1977-01-11 E. I. Du Pont De Nemours And Company Electrical connector
US4329552A (en) * 1980-04-23 1982-05-11 Gould Inc. Wire formed interleaved spring contact structure
DE3622494A1 (de) * 1986-07-02 1988-01-07 Siemens Ag Kontaktsystem fuer einen elektrischen druckgasschalter
JPH01187716A (ja) * 1988-01-20 1989-07-27 Meidensha Corp 電気接触子
DE102004061276A1 (de) 2004-12-13 2006-06-22 Siemens Ag Elektrische Kontaktanordnung
EP1973202B1 (fr) 2007-03-21 2013-06-19 Siemens Aktiengesellschaft Système de contact doté de plusieurs points de contact

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