EP1235239A1 - Agencement de contacts - Google Patents

Agencement de contacts Download PDF

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Publication number
EP1235239A1
EP1235239A1 EP01810195A EP01810195A EP1235239A1 EP 1235239 A1 EP1235239 A1 EP 1235239A1 EP 01810195 A EP01810195 A EP 01810195A EP 01810195 A EP01810195 A EP 01810195A EP 1235239 A1 EP1235239 A1 EP 1235239A1
Authority
EP
European Patent Office
Prior art keywords
contact
springs
arrangement according
axis
contact springs
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.)
Withdrawn
Application number
EP01810195A
Other languages
German (de)
English (en)
Inventor
Andreas Nohl
Michael Pohle
Lukas Zehnder
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
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 EP01810195A priority Critical patent/EP1235239A1/fr
Publication of EP1235239A1 publication Critical patent/EP1235239A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/40—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support

Definitions

  • the invention is based on a contact arrangement according to the Preamble of claim 1.
  • a disconnector is known from patent application EP 0 561 485 A1 known, the plate-shaped contact arrangement having.
  • the movable contact pieces of this Contact arrangement are in the closed state of the Isolator switch metallic relatively large their fixed counter contacts. such large contact transitions without defined Contact pads are not or for high operating currents only suitable to a limited extent.
  • the invention as characterized in the independent claim is the task of creating a contact arrangement that is suitable for comparatively high operating currents.
  • this contact arrangement has very high operating currents can lead, but it is also suitable, comparatively withstand high-current commutation arcs. Further shows a large number of defined small areas Contact points, which is a particularly good one Ensure current supply. Has proven to be particularly advantageous it is that during switching operations in the contact arrangement current forces occurring on the contact movement can have a braking effect.
  • This invention is based on a contact arrangement at least one contact piece and with at least one opposing with this interacting counter contact, which are movable relative to each other along an axis.
  • Contact element provided. This contact element is vertical arranged to the axis, and is in the direction of the axis of the Relative movement designed resilient.
  • FIG. 1 shows a simplified view of a Contact arrangement 1.
  • This contact arrangement 1 has Contact element 2, which with a metallic Contact piece 3 is firmly connected.
  • the contact element 2 is circular, as better shown in Figure 3 it can be seen that it has a central axis 4.
  • the Contact element 2 is made of a very good electrical conductor Material made, which also has good spring properties has, for example made of beryllium bronze.
  • an annular board is used from which a multitude of evenly distributed contact springs 6a held centrally by a retaining ring 5 and 6b is cut out and shaped in a tool. These contact springs 6a and 6b are, as from FIG.
  • the contact springs 6a and 6b are even on the circumference distributed.
  • the contact springs 6a are in the relieved state, so if no forces act on it, in relation to the contact springs 6b, as shown in FIG. 2 can be clearly seen.
  • Figure 2 is a counter contact 10 shown that neither the contact springs 6a nor Contact springs 6b touched.
  • the Mating contact 10 makes the above contact springs 6a however, none with the reset contact springs 6b Contact.
  • the mating contact 10 is on the defined Contact support points 7 of all contact springs 6a and 6b. This large number of defined contact points a very good power transfer for sure.
  • the apex of the contact surface 9 rest and also defined there Form contact points. That of the contact surface 9 facing side of the end parts 8 of the contact springs 6a and 6b can also be raised accordingly Contact points should be designed.
  • this contact arrangement 1 is a mechanical stop provided that limits the spring stroke of the contact element 2, so that there is no mechanical overload on the contact springs 6a and 6b can occur.
  • FIG. 4 shows a second embodiment of the Contact arrangement 1.
  • the Contact force of the contact springs 6a and 6b reinforced by additional resilient element which in the area of defined contact support points 7 between the contact surface 9 and the contact springs 6a and 6b is inserted.
  • a round cord ring 11 made of an electric insulating elastic material such as rubber or silicone plastic.
  • metal springs it is also possible on this Place metal springs if care is taken for example with the help of insulating intermediate layers that no stray currents can flow over these metal springs. It offer a variety of different strength resilient Elements so that the contact arrangement 1 optimally to the be adapted to the respective operating and operating conditions can.
  • FIG. 5 shows a third embodiment of the Contact arrangement 1 shown.
  • This embodiment draws is characterized by the fact that it has a particularly large spring stroke is mastered.
  • the contact force can be determined by a additional resilient element, which in the area of defined contact support points 7 of the contact springs 6a and 6b is inserted between the contact elements 2, reinforced become.
  • FIGS. 1 and 2 are used to explain the mode of operation a little closer.
  • a contact arrangement 1 can for example in the rated current path of a circuit breaker are used, which is parallel to the power current path of the circuit breaker is switched. This nominal current path usually after the power current path is closed switched on when de-energized.
  • Figure 2 shows the contact arrangement 1 immediately before the contact is made, when the mating contact 10 in the direction of arrow 12 axially moved on. The mating contact 10 first meets the protruding contact springs 6a and presses them in the axial Direction against the contact surface 9, as shown in FIG. 1 is shown. Then there is contact with the reset contact springs 6b.
  • the drive for the Mating contact 10 can accordingly without a safety margin, which takes into account current-related friction losses, can be designed, it can therefore be particularly inexpensive be designed.
  • Such contact arrangements 1 can also be very advantageous in areas other than switchgear technology become.
  • the end faces of busbars by means of such contact arrangements 1 be contacted with each other, the operational Thermal expansion of the busbars in the longitudinal direction through the Contact arrangements 1 are included.
  • the embodiment shown in Figure 5 particularly suitable.
  • the contact element 2 can also be used as linearly stretched tape.

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  • Breakers (AREA)
EP01810195A 2001-02-26 2001-02-26 Agencement de contacts Withdrawn EP1235239A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01810195A EP1235239A1 (fr) 2001-02-26 2001-02-26 Agencement de contacts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01810195A EP1235239A1 (fr) 2001-02-26 2001-02-26 Agencement de contacts

Publications (1)

Publication Number Publication Date
EP1235239A1 true EP1235239A1 (fr) 2002-08-28

Family

ID=8183758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01810195A Withdrawn EP1235239A1 (fr) 2001-02-26 2001-02-26 Agencement de contacts

Country Status (1)

Country Link
EP (1) EP1235239A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR766282A (fr) * 1933-12-30 1934-06-25 Brown Contact électrique pour interrupteurs, en particulier interrupteurs à chambre d'extinction, et courants de forte intensité
DE694556C (de) * 1937-11-24 1940-08-03 Siemens & Halske Akt Ges insbesondere fuer hoehere Belastungen
DE823750C (de) * 1950-03-02 1951-12-06 Telefunken Gmbh Kontaktanordnung fuer Hochfrequenzschalter und -stecker
US2639355A (en) * 1951-05-25 1953-05-19 Magnaflux Corp Electrical contact
US4808129A (en) * 1988-02-10 1989-02-28 Kershner Stephen W Contact for strip line switch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR766282A (fr) * 1933-12-30 1934-06-25 Brown Contact électrique pour interrupteurs, en particulier interrupteurs à chambre d'extinction, et courants de forte intensité
DE694556C (de) * 1937-11-24 1940-08-03 Siemens & Halske Akt Ges insbesondere fuer hoehere Belastungen
DE823750C (de) * 1950-03-02 1951-12-06 Telefunken Gmbh Kontaktanordnung fuer Hochfrequenzschalter und -stecker
US2639355A (en) * 1951-05-25 1953-05-19 Magnaflux Corp Electrical contact
US4808129A (en) * 1988-02-10 1989-02-28 Kershner Stephen W Contact for strip line switch

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