WO2015024840A1 - Système de contacts électriques - Google Patents

Système de contacts électriques Download PDF

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Publication number
WO2015024840A1
WO2015024840A1 PCT/EP2014/067349 EP2014067349W WO2015024840A1 WO 2015024840 A1 WO2015024840 A1 WO 2015024840A1 EP 2014067349 W EP2014067349 W EP 2014067349W WO 2015024840 A1 WO2015024840 A1 WO 2015024840A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
spring
finger
electrical
mating
Prior art date
Application number
PCT/EP2014/067349
Other languages
German (de)
English (en)
Inventor
Tomasz Magier
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2015024840A1 publication Critical patent/WO2015024840A1/fr

Links

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

Definitions

  • the invention relates to an electrical contact system for an electrical switch, in particular a switch for power distribution networks, having the features according to the preamble of patent claim 1.
  • an electrical contact system is known, for example, from the European patent EP 1 675 142.
  • the prior art contact system is equipped with a contact carrier to which a plurality of contact finger contacts is attached. In the closed state of the contact system, the contact finger contacts are located on a mating contact of the contact system; in the open state of the contact system, they are separated from the mating contact.
  • the invention has for its object to provide an electrical contact system that has a particularly low electrical resistance in the closed state, but still can be easily and inexpensively finished.
  • the invention provides that on the contact carrier additionally at least one contact spring contact is attached, which rests in the closed state of the contact system on the same mating contact of the contact system as the contact finger contact and is separated in the open state of the contact system of this mating contact.
  • An essential advantage of the contact system according to the invention is the fact that in this case, due to the invention additionally provided at least one contact spring Contact a particularly low electrical contact resistance is achieved.
  • the contact finger contact and the at least one contact spring contact form a parallel circuit through which the current flows when the contact system is closed and on whose parallel branches the current is divided.
  • the principal disadvantage of contact finger contacts that the current must push through a relatively small number of relatively small contact surfaces or contact points in the fingertips, is significantly reduced by providing a further current path, namely by the contact spring contact.
  • the contact system according to the invention is thus very resistant to resistance and has comparatively small heat losses even at high currents.
  • the additional contact spring contact can be added during the production of the contact system with relatively little effort.
  • the contact spring contact and the contact finger contact it is considered advantageous if the contact spring contact and the contact finger contact along the contact sliding direction of the contact system are arranged one behind the other.
  • the contact sliding direction is understood to be the direction along which the contact carrier and the mating contact are displaced relative to each other for closing and opening the contact system.
  • the arrangement of the contact spring contact and the contact finger contact is chosen such that, starting from the opened state of the contact system, first the contact finger contact comes into contact with the counter contact, and only then the contact spring contact.
  • the at least one contact spring contact is a coil spring contact having a coil spring which exerts a spring force on the mating contact in the closed state of the contact system.
  • Coil spring contacts can be attached in a very simple manner to a contact carrier, so that the additional provision of one or more coil spring contacts in the production of the contact system does not cause any significant additional costs.
  • the at least one contact spring contact is a lamellar contact.
  • the lamellar contact has a plate carrier, on which a plurality of contact lamellae are formed, each exerting a spring force on the mating contact in the closed state of the contact system.
  • each contact finger contact to form a pair of contact elements is assigned in each case a contact spring contact, along the contact sliding direction is behind the associated contact finger contact, and the contact element pairs are each arranged rotationally symmetrical.
  • the invention will be explained in more detail with reference to embodiments;
  • a first exemplary embodiment of a contact system according to the invention in which both a contact finger contact and a contact spring contact is attached to a contact carrier of the electrical contact system, the contact carrier of the electrical contact system according to Figure 1 in a three-dimensional view obliquely from the side, an embodiment of a Spiral spring contact, which can be used as a contact spring contact in the electrical contact system according to Figure 1 or 5, an embodiment of a blade contact, which is set as a contact spring contact in the electrical contact system according to Figure 1 or 5, and
  • FIG. 5 shows an exemplary embodiment of an electrical contact system in which each contact finger contact of a contact carrier is assigned in each case two contact spring contacts which lie one behind the other along the contact sliding direction of the electrical contact system.
  • FIG. 1 shows an exemplary embodiment of an electrical contact system 10, in which a contact carrier 20 and a mating contact 30 are displaceable relative to one another along a contact sliding direction S.
  • FIG. 1 shows the closed state of the electrical contact system 10; the contact carrier 20 and the mating contact 30 are in contact with each other and are electrically contacted. If the electrical contact system 10 are to be opened, then the contact carrier 20 and the mating contact 30 are displaced relative to one another along the contact sliding direction S such that they are spatially separated and have no contact with each other.
  • a contact finger contact 21 and a contact spring contact 22 are attached on the contact carrier 20, a contact finger contact 21 and a contact spring contact 22 are attached.
  • the arrangement of the contact finger contact 21 and the contact spring contact 22 is selected such that they lie spatially one behind the other along the contact sliding direction S.
  • the contact finger contact 21 first contacts the mating contact 30 before the contact spring contact 22 comes to rest on the mating contact 30.
  • the contact finger contact 21 is resiliently mounted.
  • For suspension serve two spring elements 100 and 101, which are fastened to a shielding element 23.
  • the shielding member 23 is attached to the contact carrier 20.
  • FIG. 1 also shows the current flow I through the electrical contact system 10. It can be seen that a current component II flows from the mating contact 30 through the contact finger contact 21 to the contact carrier 20. Another current component 12 flows past the contact finger contact 21 through the mating contact 30 in the direction of the contact spring contact 22 and reaches the contact carrier 20 via this contact spring contact 22. By splitting the current I into two current components II and 12, an optimal current distribution in the contact region between the contact carrier 20 and the mating contact 30 and thus an optimal behavior of the electrical contact system 10 is achieved.
  • FIG. 2 shows the electrical contact system 10 according to FIG. 1 in a three-dimensional view obliquely from the side.
  • the contact spring contacts, which lie behind the contact finger contacts 21, are not recognizable in FIG.
  • FIG. 3 shows an exemplary embodiment of a spiral spring contact 200 which can be attached as a contact spring contact 22 to the contact carrier 20 according to FIG.
  • the spiral spring contact 200 has a spiral spring 201, the longitudinal direction of which is designated by the reference symbol L in FIG.
  • the coil spring 201 of the coil spring contact 200 is preferably arranged in the contact system 20 according to Figure 1 in the case of use as a contact spring contact 22 such that the longitudinal direction L of the coil spring 201 is aligned perpendicular to the contact sliding direction S of the electrical contact system 10.
  • the longitudinal direction L of the coil spring 201 is preferably perpendicular to the contact surface of the mating contact 30.
  • FIG. 4 shows an exemplary embodiment of a laminar contact 300, which can be attached to the contact carrier 20 of the electrical contact system 10 as a contact spring contact 22.
  • the blade contact 300 has a plate carrier 301 on which a plurality of contact blades 302 are arranged.
  • the arrangement of the lamellar contact 300 on the contact carrier 20 according to FIG. 1 preferably takes place in such a way that the contact lamellae 302 lie between the mating contact 30 and the lamella carrier 301 and rest elastically resiliently on the mating contact 30 for contacting.
  • FIG. 5 shows a second exemplary embodiment of an inventive electrical contact system 10, in which a contact finger contact 21 is attached to a contact carrier 20. In contrast to the exemplary embodiment according to FIG. 1, the electrical contact system 10 according to FIG.
  • the mating contact 30 will first contact the contact finger contact 21 when the contact system 10 is closed, before it contacts the contact spring contact 22 and the contact spring contact 22a.
  • the advantage of the embodiment according to Figure 5 is that the electrical resistance of the electrical contact system 10 in the closed state by the additional second contact spring contact 22a is smaller than in the embodiment of Figure 1, because the current I in three current components II, 12 and 13th can divide.
  • the electrical load capacity of the contact system 10 according to FIG. 5 is thus greater than that of the exemplary embodiment according to FIG. 1.
  • the spring contact 200 shown in FIG. 3 or the contact blade 300 according to FIG. 4 can be used as the contact spring contacts 22 and 22a.
  • the coil spring contact 200 is used as the contact spring contact 22 and the blade contact 300 is used as the further contact spring contact 22a.
  • the contact spring contact 22 of the blade contact 300 and as a further contact spring contact 22a of the coil spring contact 200 can be used.
  • identical contact types can be used as contact spring contacts 22 or 22a, ie in each case one coil spring contact or one blade contact each.
  • FIGS. 1 and 5 it can be seen that the additional provision of the contact spring contacts 22 and 22a on the contact carrier 20 is very simple in terms of manufacturing technology and thus cost-effective.
  • recesses 400 preferably in the form of grooves, must be provided in the contact carrier 20, which allow insertion of the contact spring contacts. The introduction of such depressions 400 and the insertion of the contact spring contacts are readily possible during the production of the electrical contact system 10 and without significant additional costs.

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  • Contacts (AREA)

Abstract

L'invention concerne un système de contacts électriques (10), destiné à un commutateur électrique, en particulier un commutateur pour réseaux de distribution d'énergie, qui comprend un support de contacts (20) sur lequel est monté au moins un contact à doigt conducteur (21) qui est en appui sur un contact conjugué (30) du système de contacts (10) lorsque ce dernier est fermé et séparé dudit contact conjugué (30) lorsque le système de contacts (10) est ouvert. Selon l'invention, le support de contacts (20) comporte en outre au moins un contact à ressort conducteur (22, 22a) qui est en appui sur le même contact conjugué (30) du système de contacts (10) que le contact à doigt conducteur (21) lorsque le système de contacts (10) est fermé et qui est séparé dudit contact conjugué (30) lorsque le système de contacts (10) est ouvert.
PCT/EP2014/067349 2013-08-19 2014-08-13 Système de contacts électriques WO2015024840A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310216371 DE102013216371A1 (de) 2013-08-19 2013-08-19 Elektrisches Kontaktsystem
DE102013216371.1 2013-08-19

Publications (1)

Publication Number Publication Date
WO2015024840A1 true WO2015024840A1 (fr) 2015-02-26

Family

ID=51357932

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/067349 WO2015024840A1 (fr) 2013-08-19 2014-08-13 Système de contacts électriques

Country Status (2)

Country Link
DE (1) DE102013216371A1 (fr)
WO (1) WO2015024840A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015106726U1 (de) 2015-12-10 2016-01-14 Abb Technology Ag Gasisolierter Hochspannungsschalter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3070727B1 (fr) 2015-03-20 2017-09-20 Siemens Aktiengesellschaft Dispositif sectionneur de déconnexion ou connexion électrique haute-tension

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1955490U (de) * 1966-12-16 1967-02-16 Continental Elektro Ind Ag Elektrischer last- bzw. leistungsschalter.
FR2852729A1 (fr) * 2003-03-20 2004-09-24 Alstom Appareil electrique ou moyenne tension comprenant une bande de contacts a lamelles
WO2009021882A1 (fr) * 2007-08-13 2009-02-19 Siemens Aktiengesellschaft Ensemble de commutateur pour installation de commutation
US20120280772A1 (en) * 2010-02-26 2012-11-08 Mitsubishi Electric Corporation Electric current switching apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE475191T1 (de) 2004-12-21 2010-08-15 Abb Technology Ag Kontaktsystem für ein elektrisches schaltgerät

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1955490U (de) * 1966-12-16 1967-02-16 Continental Elektro Ind Ag Elektrischer last- bzw. leistungsschalter.
FR2852729A1 (fr) * 2003-03-20 2004-09-24 Alstom Appareil electrique ou moyenne tension comprenant une bande de contacts a lamelles
WO2009021882A1 (fr) * 2007-08-13 2009-02-19 Siemens Aktiengesellschaft Ensemble de commutateur pour installation de commutation
US20120280772A1 (en) * 2010-02-26 2012-11-08 Mitsubishi Electric Corporation Electric current switching apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015106726U1 (de) 2015-12-10 2016-01-14 Abb Technology Ag Gasisolierter Hochspannungsschalter

Also Published As

Publication number Publication date
DE102013216371A1 (de) 2015-02-19

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