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EP0660444B1 - Distributeur électrique à basse tension - Google Patents

Distributeur électrique à basse tension Download PDF

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Publication number
EP0660444B1
EP0660444B1 EP94810695A EP94810695A EP0660444B1 EP 0660444 B1 EP0660444 B1 EP 0660444B1 EP 94810695 A EP94810695 A EP 94810695A EP 94810695 A EP94810695 A EP 94810695A EP 0660444 B1 EP0660444 B1 EP 0660444B1
Authority
EP
European Patent Office
Prior art keywords
plug
low
contact
distribution board
voltage distribution
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
EP94810695A
Other languages
German (de)
English (en)
Other versions
EP0660444A1 (fr
Inventor
Werner Bührer
Fritz Ehrensperger
Hermann Kick
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
ABB CMC Carl Meier AG
Original Assignee
CMC Carl Maier and Cie 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 CMC Carl Maier and Cie AG filed Critical CMC Carl Maier and Cie AG
Publication of EP0660444A1 publication Critical patent/EP0660444A1/fr
Application granted granted Critical
Publication of EP0660444B1 publication Critical patent/EP0660444B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials

Definitions

  • the invention is based on a low-voltage distributor according to the preamble of claim 1.
  • Low-voltage distributor serve the distribution of from a low voltage network fed electricity in a consumer system and typically have a busbar system, the Low voltage network connecting to the busbar system Supply device and the busbar system with consumers, such as sockets or permanently installed large electrical appliances, connecting built-in devices, such as line, residual current or motor circuit breakers, on.
  • Such low voltage distributors lead Operating currents up to 100 A and can handle short circuit currents from 10kA and more.
  • the invention relates to a prior art, as in EP 0 229 590 B1 is specified.
  • the low-voltage distributor described has in addition to a supply device and built-in devices a plug-in base holding busbars on.
  • Each of the built-in devices is equipped with at least one self-resilient plug contact plugged into one of the busbars and attached to the socket.
  • the plug contact is in one of the Adaptation of the built-in device to the guide channel serving the busbar floating and is welded on flexible conductor with a connection terminal of the built-in device electrically connected.
  • the busbar and the plug contact consist of an electrically highly conductive material, such as typically copper, brass or aluminum.
  • Such a low-voltage distributor has a large one Period with high operating currents, for example 50 or 100 A operated, can be due to the specific resistance the material of the busbar and plug contact but mainly due to the continuously increasing contact resistance in the plug-in area that of the busbar and the Heat the plug contact formed to an impermissibly high level.
  • are responsible for increasing the contact resistance especially the surrounding corrosive and / or oxidizing Atmosphere as well as mechanical forces caused by stretching processes due to heating and cooling with changing loads are caused during operation.
  • Impermissibly high Heating can decrease the spring force of the plug contact and thus to a further increase in the contact resistance to lead.
  • the invention as set out in claim 1 lies based on the task of a low-voltage distributor at the beginning Specify the type mentioned, while maintaining the specified geometrical dimensions without problems over very long periods of time can be loaded with high operating currents.
  • the low-voltage distributor according to the invention excels everything from the fact that he is able to much higher To carry operating currents than the known low-voltage distributor, but still the same compact design as this one having.
  • Low voltage distributor according to the state of the art Spring force of the plug contact increasing clamping ring is eliminated.
  • This is on the one hand the result of a suitably trained and rated current path. In this current path it is the consequence ohmic losses in the current conductors and at the contact resistance caused heating of the live parts compared to the corresponding current path at the low voltage distributor after the State of the art significantly reduced.
  • the low-voltage distributor according to the invention differs from Low voltage distributor according to the state of the art with regard to the geometric design of its individual components at best slightly from the busbar and can therefore can be made practically with the same tools as the Low-voltage distribution board according to the state of the art.
  • the low-voltage distributor can have a comparable load capacity according to the invention because of the elimination of the spring force of the Plug contact increasing clamping ring considerably cheaper are manufactured as the low voltage distribution board after the State of the art.
  • the low voltage distributor shown in the figure contains a molded socket 10 made of polymer material from im essential U-shaped profile with brackets 11 for fixation of busbars running perpendicular to the plane of the drawing, of which only one busbar 12 is shown.
  • This busbar has a substantially rectangular cross section and consists of unalloyed, preferably electrolytically produced and surface-coated copper.
  • flexible hooks 13 integrally formed, which in grooves 14, for example, as a circuit breaker trained built-in device 15 are stored.
  • At the upper end of the right leg are shown in dashed lines Provided recesses 16 in which to the housing 17 of the Built-in device 15 molded, not marked lugs intervention.
  • the built-in device 15 is in the Socket 10 inserted and by the interaction of Checkmark 13 and the grooves 14 and the recesses 16 and the the housing 17 molded lugs attached to the socket 10.
  • the built-in device 15 is on the right in the drawing plane Side surface extending guide channel 19 incorporated.
  • This Guide channel is laterally from two parallel to each other Guide grooves 20, of which only those below the drawing level lying is limited.
  • the guide channel 19 serves to move a U-shaped plug contact 21 with tulip-shaped curved legs.
  • the base of the U is as Plate formed and has two not shown in the figure Guide elements that in the two guide grooves 20th are floating.
  • the base of the U is on the outside by cold welding, especially by Ultrasonic or friction welding, with one made of insulation 22 guided end of a preferably designed as a strand flexible conductor 23 connected.
  • the flexible conductor 23 is in the Guide channel 19 led to the outside and is with his outer conductor end with a terminal 24 of the Built-in device 15 electrically connected.
  • the plug contact 21 Before the built-in device 15 is plugged onto the busbar 12 and the socket 10 and fixing the plug-in device 15 on the plug base 10, the plug contact 21 is through Moving in the guide channel 19 first brought into a position in which he with the busbar 12 fixed in the socket 10 flees. Depending on the phase of the busbar 12 in the shown in solid lines or dashed in the two illustrated positions of the busbar 12 may be the case. Of the Plug contact 21 is now with a locking slide not visible fixed and can not now along the guide channel be moved anymore. Because the guide elements of the plug contact 21 adapted with relatively much play to the guide grooves 20 are, the plug contact 21 is floating.
  • Unalloyed copper has a very high conductivity and is despite low hardness and strength easily as a material for the busbar 12 use because of the floating mounting of the plug contact 21 and the flexible design of the conductor 23 in the current path no significant mechanical effects, even in the case of excessive heating Forces occur.
  • the busbar 12 has Rounding of its two upper edges formed guide surfaces 25, which is a relatively force-free attachment of the Allow plug contact 21 and thus the soft material of the Protect busbar 12.
  • a very substantial reduction in the ohmic resistance of the Current path is achieved in that the contact resistance from the busbar 12 to the plug contact 21 during the often the low-voltage distributor has been in operation for many years through a suitably generated high contact force of the plug connection is kept small.
  • a material with a brass or bronze reduced relaxation used for the plug contact 21 .
  • the connector is often completely considerably. In contrast to these materials, this leads to the slight relaxation, however, to no noticeable easing the contact force of the connector and thus also to none impermissible increase in contact resistance.
  • low-alloy copper with nickel and silicon as alloy components proven, especially one according to German Standards regarding their composition and material properties copper alloy determined by the abbreviation CuNi2Si.
  • This alloy not only exhibits good weldability, a sufficiently high electrical conductivity, high mechanical Strength as well as good flexibility and hardness, but records especially by comparing it with the usual in low-voltage distributors as a material for plug contacts 21 brass or bronze used by a very low Relaxation at temperatures up to 150 ° C. This favors its use as a material for self-resilient and welded Plug contacts 21 in low voltage distributors very essential and enables the saving of one with low voltage distributors according to the state of the art required clamping ring.
  • the plug-in contact welded to the flexible conductor 23 21 in a simple way by punching and bending from a sheet as well as subsequent cold welding of the flexible Conductor 23, such as in particular friction or ultrasonic welding, getting produced.
  • the plug contact 21 with the flexible conductor 23 in the gentle cold welding process is connected because such a softening of parts of the Plug contact 21 and thus a change in the structure of the Alloy and an increase in relaxation can be avoided.
  • the busbar 12 and the plug contact 21 are each with one the contact resistance from the busbar 12 to the Plug contact 21 reducing during operation of the distributor, preferably galvanically applied surface coating Mistake.
  • This surface coating is both on the Busbar 12 and at least on the plug contact 21 trained in two layers. This makes it particularly effective Reduction in contact resistance achieved.
  • Both on the busbar 12 and on the plug contact 21 is the bottom layer of the surface coating Diffusion of copper when operating the low-voltage distributor preventing metallic material, preferably pure or low-alloy nickel, applied.
  • metallic material preferably pure or low-alloy nickel
  • the underlying material i.e. in the Busbar 12 the pure copper and the plug contact 21 that low-alloy copper, effective against corrosion and oxidation protected. Adequate protection is then achieved if the bottom layer of the surface coating has a thickness of 1 to 6, preferably from 2 to 4 microns.
  • busbar 12 and plug contact 21 are the top layer different materials for the surface coating intended.
  • the busbar 12 is on as a diffusion barrier for the copper acting metal, in particular that Nickel or nickel alloy, a sliding of the plug contact 21 metal to facilitate a plugging process Material, such as pure or low-alloy tin in particular or lead applied. This flows during a mating process Material slightly and thereby increases the number of Micro contact points. A the contact resistance significantly enlarging oxidation layer is scraped away. At the same time, this top layer prevents the surface coating Influences of corrosion.
  • the described beneficial effects of top layer of surface coating are with thicknesses between 4 and 30, preferably between 6 and 10 microns.
  • plug contact 21 When plug contact 21 is on the diffusion barrier as additional corrosion and oxidation protection serving and at the same time a particularly high electrical conductivity comprising metallic material, such as in particular pure or low-alloy silver, applied. Will be beneficial effects achieved with this upper layer of the surface coating, if they have a thickness of 2 to 10, preferably 5 to 8 ⁇ m, having.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (15)

  1. Distributeur électrique à basse tension muni d'un socle embrochable (10) qui maintient des rails collecteurs et muni d'un appareillage encastré (15) embroché sur l'un (12) des rails collecteurs avec au moins un contact embrochable (21) et maintenu sur le socle embrochable (10), avec lequel une borne de raccordement (24) de l'appareillage encastré (15) est reliée électriquement avec le rail collecteur (12) par le biais d'au moins un conducteur souple (23) et par le contact embrochable (21) soudé sur le conducteur (23) et logé de manière flottante dans le boítier (17) de l'appareillage encastré (15), caractérisé en ce que le rail collecteur (12) est réalisé en cuivre non allié et qu'il présente des surfaces de guidage (25) facilitant l'embrochage du contact embrochable (21), et que le contact embrochable (21) se compose d'un matériau présentant un relâchement réduit par rapport à celui du laiton ou du bronze et qu'il est relié avec le conducteur souple (23) par un procédé de soudage empêchant un ramollissement du contact embrochable (15).
  2. Distributeur électrique à basse tension selon la revendication 1, caractérisé en ce que le matériau du contact embrochable (21) est un alliage de cuivre faiblement allié avec du nickel et du silicium comme composantes d'alliage.
  3. Distributeur électrique à basse tension selon la revendication 2, caractérisé en ce que l'alliage de cuivre présente une composition définie par l'abréviation CuNi2Si selon les normes allemandes.
  4. Distributeur électrique à basse tension selon la revendication 1, caractérisé en ce que le matériau du contact embrochable (21) est un alliage de cuivre faiblement allié avec de l'argent et du phosphore comme composantes d'alliage.
  5. Distributeur électrique à basse tension selon la revendication 4, caractérisé en ce que l'alliage de cuivre présente une composition définie par l'abréviation CuAg0,1P selon les normes allemandes.
  6. Distributeur électrique à basse tension selon la revendication 5, caractérisé en ce que le contact embrochable (21) présente en plus une bague de serrage.
  7. Distributeur électrique à basse tension selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le conducteur souple (23) est relié au contact embrochable (21) par un procédé de soudage à froid, comme notamment par soudage par friction ou soudage aux ultrasons.
  8. Distributeur électrique à basse tension selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le rail collecteur (12) et le contact embrochable (21) sont chacun munis d'un revêtement de surface réduisant la résistance de contact entre le rail collecteur (12) et le contact embrochable (21) pendant le fonctionnement du distributeur.
  9. Distributeur électrique à basse tension selon la revendication 8, caractérisé en ce que le revêtement de surface est appliqué au moins sur deux couches aussi bien sur le rail collecteur (12) que sur le contact embrochable (21).
  10. Distributeur électrique à basse tension selon la revendication 9, caractérisé en ce que la couche inférieure du revêtement de surface, aussi bien sur le rail collecteur (12) que sur le contact embrochable (21), est appliquée en un matériau métallique évitant la diffusion vers l'extérieur du cuivre pendant le fonctionnement du distributeur électrique à basse tension, de préférence du nickel pur ou faiblement allié.
  11. Distributeur électrique à basse tension selon la revendication 10, caractérisé en ce que la couche inférieure du revêtement de surface présente une épaisseur comprise entre 1 et 6 µm, de préférence entre 2 et 4 µm.
  12. Distributeur électrique à basse tension selon l'une quelconque des revendications 10 ou 11, caractérisé en ce que le rail collecteur (12) présente, comme couche supérieure du revêtement de surface, un matériau facilitant le glissement du contact embrochable (21) lors d'une opération d'embrochage, comme par exemple de l'étain ou du plomb pur ou faiblement allié.
  13. Distributeur électrique à basse tension selon la revendication 12, caractérisé en ce que la couche supérieure du revêtement de surface présente une épaisseur comprise entre 4 et 30 µm, de préférence entre 6 et 10 µm.
  14. Distributeur électrique à basse tension selon l'une quelconque des revendications 10 à 13, caractérisé en ce que le contact embrochable (21) présente, comme couche supérieure du revêtement de surface, un matériau métallique ayant une conductivité élevée, comme par exemple de l'argent pur ou faiblement allié.
  15. Distributeur électrique à basse tension selon la revendication 14, caractérisé en ce que la couche supérieure du revêtement de surface présente une épaisseur comprise entre 2 et 10 µm, de préférence entre 5 et 8 µm.
EP94810695A 1993-12-22 1994-12-05 Distributeur électrique à basse tension Expired - Lifetime EP0660444B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3828/93 1993-12-22
CH382893 1993-12-22

Publications (2)

Publication Number Publication Date
EP0660444A1 EP0660444A1 (fr) 1995-06-28
EP0660444B1 true EP0660444B1 (fr) 1998-10-21

Family

ID=4264344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94810695A Expired - Lifetime EP0660444B1 (fr) 1993-12-22 1994-12-05 Distributeur électrique à basse tension

Country Status (3)

Country Link
EP (1) EP0660444B1 (fr)
AT (1) ATE172580T1 (fr)
DE (1) DE59407128D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19859717A1 (de) * 1998-12-23 2000-06-29 Moeller Gmbh Schnell-Montage-Verdrahtungssystem

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0229590A1 (fr) * 1985-12-14 1987-07-22 CMC Carl Maier + Cie AG Distribution basse tension

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2482791A1 (fr) * 1980-05-13 1981-11-20 Ctm Perfectionnements aux contacts de connecteurs
FR2574997B1 (fr) * 1984-12-14 1987-03-06 Traitement Surface Mecanique Nouveaux contacts electriques
JPS62227051A (ja) * 1986-03-28 1987-10-06 Mitsubishi Shindo Kk Ｃｕ合金製電気機器用コネクタ
JPS63149345A (ja) * 1986-12-15 1988-06-22 Nippon Mining Co Ltd 耐熱性を向上させた高力高導電銅合金
JPH0230727A (ja) * 1988-07-19 1990-02-01 Nippon Mining Co Ltd 半導体機器リード材又は導電性ばね材用高力高導電銅合金
JP2514234B2 (ja) * 1988-08-05 1996-07-10 株式会社神戸製鋼所 強度と導電性に優れる端子・コネクタ―用銅合金
JPH0324241A (ja) * 1989-06-21 1991-02-01 Furukawa Electric Co Ltd:The 耐熱性と耐摩耗性に優れた摺動通電用銅合金
JP2977845B2 (ja) * 1990-01-30 1999-11-15 株式会社神戸製鋼所 ばね特性、強度及び導電性に優れた耐マイグレーション性端子・コネクタ用銅合金
JPH0448039A (ja) * 1990-06-14 1992-02-18 Kobe Steel Ltd アーク溶解炉用水冷式銅合金るつぼ

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0229590A1 (fr) * 1985-12-14 1987-07-22 CMC Carl Maier + Cie AG Distribution basse tension

Also Published As

Publication number Publication date
DE59407128D1 (de) 1998-11-26
EP0660444A1 (fr) 1995-06-28
ATE172580T1 (de) 1998-11-15

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