EP0360368A2 - Montage de contact butant à levier pour interrupteur de puissance à basse tension avec des contacts principaux et des contacts d'amorçage d'arc - Google Patents

Montage de contact butant à levier pour interrupteur de puissance à basse tension avec des contacts principaux et des contacts d'amorçage d'arc Download PDF

Info

Publication number
EP0360368A2
EP0360368A2 EP89250039A EP89250039A EP0360368A2 EP 0360368 A2 EP0360368 A2 EP 0360368A2 EP 89250039 A EP89250039 A EP 89250039A EP 89250039 A EP89250039 A EP 89250039A EP 0360368 A2 EP0360368 A2 EP 0360368A2
Authority
EP
European Patent Office
Prior art keywords
contact
burn
lever
levers
main
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.)
Granted
Application number
EP89250039A
Other languages
German (de)
English (en)
Other versions
EP0360368B1 (fr
EP0360368A3 (fr
Inventor
Clifford A. Buxton
David A. Leone
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 AG, Siemens Corp filed Critical Siemens AG
Publication of EP0360368A2 publication Critical patent/EP0360368A2/fr
Publication of EP0360368A3 publication Critical patent/EP0360368A3/fr
Application granted granted Critical
Publication of EP0360368B1 publication Critical patent/EP0360368B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H9/38—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H9/383—Arcing contact pivots relative to the movable contact assembly
    • 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
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars

Definitions

  • the invention relates to a lever-pressure contact arrangement for a low-voltage circuit breaker with a plurality of pairs of fixed and movable main contact pieces connected in parallel in parallel and a pair of fixed and movable burnout contacts, the movable burnout contact piece being fastened to a burnout contact lever which is pivotably arranged relative to the main contact pieces carrying the main contact pieces .
  • a contact arrangement of this type is known from US-A-4,713,504.
  • Two burn-off contact levers are provided for a total of six main contact levers.
  • the burn-off contact levers are each articulated on the second main contact lever, seen from the outside, in such a way that they extend in the extension of the main contact lever and can be pivoted about a bearing pin.
  • the invention is based on the object of ensuring the best possible transition from switching arcs on the main contacts to the burn-off contacts.
  • the stated object is achieved in that the burn-off contact lever consists of burn-off contact partial levers articulated between the main contact levers, which at their ends opposite the hinge axis form a surface provided for the movable burn-off contact piece are put together.
  • the burn-off contact lever consists of burn-off contact partial levers articulated between the main contact levers, which at their ends opposite the hinge axis form a surface provided for the movable burn-off contact piece are put together.
  • the articulated connection between the main contact levers and the burn-off contact partial levers can be formed in a simple manner by a hinge pin passing through the front ends of the main contact levers.
  • the joining together of the front ends of the arcing contact partial levers can be achieved by a rivet passing through these ends.
  • the burn-off contact partial levers have a continuous contour extending from the front edge of the main contact lever and up to its front edge to form guide rails for switching arcs to be taken over from the main contact pieces.
  • Figure 1 shows a low-voltage circuit breaker with insulating housing in section.
  • FIG. 2 shows a side view of a contact arrangement of the circuit breaker according to FIG. 1.
  • FIGS. 3 and 4 show a top view and a side view of the burn-off contact partial lever of the contact arrangement according to FIG. 2.
  • FIG. 5 shows a top view of a contact arrangement corresponding to FIG. 2 with five pairs of main contact levers.
  • FIG. 1 shows a circuit breaker with an insulating molded-plastic housing which has movable main contact pieces 10 which are carried by a current-carrying main contact lever 14. Furthermore, current-carrying fixed main contact pieces 12 are provided, as well as a burn-off contact arrangement 22 and an arc quenching chamber 24.
  • the main contact lever 14 interacts with a current-carrying articulated arrangement 16 in such a way that the main contact pieces 10 and 12 can be opened and closed by the between connection devices 18 and 20 of the circuit breaker to control flowing electricity.
  • the contact material which in many cases contains a noble metal, is subject to different degrees of deterioration or burn-off. For example, the erosion can become so great that the resistance between the contact surfaces of the contact pieces increases, which causes the contact pieces to heat up and the current transfer to deteriorate further.
  • the burnout contact arrangement 22 provided for this purpose is shown in greater detail in Figures 2-5.
  • the arcing contact arrangement 22 has five arcing contact partial levers 26, each of which has a bearing opening 28 and a rivet hole 30.
  • the burn-off contact partial levers 26 are assembled in such a way that they form a surface for attaching a burn-off contact piece 36.
  • a rivet 29 extends through rivet holes 30 in the front ends of the partial contact levers 26.
  • a hinge pin 38 grasps the through openings 28 in the end regions 34 and corresponding through openings in the main contact levers 14.
  • the arcing contact arrangement 22 acts in such a way that it converts all the arcs occurring between the main contact pieces 10 and 12 into a single arc between the arcing contact pieces 36 and 40.
  • the continuous contour of the running surfaces 32 of the erosion contact lever 26 ensures a rapid transition.
  • the mass of the arcing contact arrangement 22 and an associated spring 44 causes the arcing contact arrangement 22 to pivot relative to the main contact levers 14 such that the arcing contacts 36 and 40 remain open for a certain time after opening Main contact pieces 10 and 12 remain closed.
  • a switching arc is formed between these contact pieces.
  • the switching arc enters an arc quenching chamber 24 (FIG. 1) and is quenched there between a number of quenching plates 42.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Tumbler Switches (AREA)
  • Contacts (AREA)
EP89250039A 1988-09-21 1989-09-19 Montage de contact butant à levier pour interrupteur de puissance à basse tension avec des contacts principaux et des contacts d'amorçage d'arc Expired - Lifetime EP0360368B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/247,462 US4871889A (en) 1988-09-21 1988-09-21 Arcing contact assembly for a circuit breaker
US247462 1988-09-21

Publications (3)

Publication Number Publication Date
EP0360368A2 true EP0360368A2 (fr) 1990-03-28
EP0360368A3 EP0360368A3 (fr) 1991-11-21
EP0360368B1 EP0360368B1 (fr) 1995-04-19

Family

ID=22935032

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89250039A Expired - Lifetime EP0360368B1 (fr) 1988-09-21 1989-09-19 Montage de contact butant à levier pour interrupteur de puissance à basse tension avec des contacts principaux et des contacts d'amorçage d'arc

Country Status (6)

Country Link
US (1) US4871889A (fr)
EP (1) EP0360368B1 (fr)
JP (1) JPH02197032A (fr)
CA (1) CA1331035C (fr)
DE (1) DE58909185D1 (fr)
ES (1) ES2070900T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2511176Y2 (ja) * 1991-03-20 1996-09-18 日本高圧電気株式会社 ガス開閉器
US6072136A (en) * 1998-05-07 2000-06-06 Eaton Corporation Electrical switching apparatus with modular operating mechanism for mounting and controlling large compression close spring
US5969314A (en) * 1998-05-07 1999-10-19 Eaton Corporation Electrical switching apparatus having arc runner integral with stationary arcing contact
US6417474B1 (en) 2001-05-15 2002-07-09 Eaton Corporation Electrical switching apparatus having an arc runner with an elongated raised ridge
US7368677B2 (en) * 2005-12-14 2008-05-06 Eaton Corporation Reverse bias hatchet reset spring
US9058939B2 (en) 2011-06-29 2015-06-16 Schneider Electric USA, Inc. Configuration of an arc runner for a miniature circuit breaker
US10347436B2 (en) * 2015-10-08 2019-07-09 Abb Schweiz Ag Switching device

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2280616A (en) * 1940-10-22 1942-04-21 Gen Electric Electric circuit breaker
US3402274A (en) * 1965-10-01 1968-09-17 Square D Co Contact structure for a power circuit breaker
US3365561A (en) * 1966-11-21 1968-01-23 Gen Electric Multiple finger type current-carrying contact arm pivot assembly
US3585329A (en) * 1968-01-24 1971-06-15 Westinghouse Electric Corp Circuit interrupter with improved contact structure and arc-runner
US3560683A (en) * 1968-01-24 1971-02-02 Westinghouse Electric Corp Circuit breaker with improved contact structure
FR2038325A1 (fr) * 1969-04-09 1971-01-08 Bassani Spa
GB1312156A (en) * 1970-10-29 1973-04-04 Dorman Smith Switchgear Ltd Electrical circuit breakers and isolators
US3770922A (en) * 1972-07-27 1973-11-06 Ite Imperial Corp Circuit breaker contact structure
US4242577A (en) * 1976-12-30 1980-12-30 Westinghouse Electric Corp. Circuit breaker having insulation barrier
US4264796A (en) * 1976-12-30 1981-04-28 Westinghouse Electric Corp. Circuit breaker having improved movable contact
US4219713A (en) * 1976-12-30 1980-08-26 Westinghouse Electric Corp. Circuit breaker with high speed trip latch
US4166205A (en) * 1976-12-30 1979-08-28 Westinghouse Electric Corp. Stored energy circuit breaker
US4137437A (en) * 1977-06-03 1979-01-30 Westinghouse Electric Corp. Circuit breaker having improved movable crossbar and spring holder
US4295021A (en) * 1979-01-19 1981-10-13 Asinovsky Erik I Electromagnetic arc extinction apparatus for switchgear
US4309580A (en) * 1979-06-07 1982-01-05 Westinghouse Electric Corp. Dual arcing contacts for circuit breaker
US4251702A (en) * 1979-06-25 1981-02-17 General Electric Company Circuit breaker having multiple spring actuating mechanisms
US4229630A (en) * 1980-03-17 1980-10-21 Westinghouse Electric Corp. Circuit breaker utilizing improved arc chambers
US4301342A (en) * 1980-06-23 1981-11-17 General Electric Company Circuit breaker condition indicator apparatus
JPS60175335A (ja) * 1984-02-20 1985-09-09 富士電機株式会社 回路遮断器
JPS6147035A (ja) * 1984-08-10 1986-03-07 富士電機株式会社 回路遮断器の接触子構造
US4713504A (en) * 1986-03-03 1987-12-15 Westinghouse Electric Corp. Circuit breaker with hinged arcing contact

Also Published As

Publication number Publication date
ES2070900T3 (es) 1995-06-16
DE58909185D1 (de) 1995-05-24
EP0360368B1 (fr) 1995-04-19
JPH02197032A (ja) 1990-08-03
EP0360368A3 (fr) 1991-11-21
US4871889A (en) 1989-10-03
CA1331035C (fr) 1994-07-26

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