EP0219449B1 - Disposition de contact pour un disjoncteur à basse tension à cordon de courant flexible - Google Patents

Disposition de contact pour un disjoncteur à basse tension à cordon de courant flexible Download PDF

Info

Publication number
EP0219449B1
EP0219449B1 EP86730133A EP86730133A EP0219449B1 EP 0219449 B1 EP0219449 B1 EP 0219449B1 EP 86730133 A EP86730133 A EP 86730133A EP 86730133 A EP86730133 A EP 86730133A EP 0219449 B1 EP0219449 B1 EP 0219449B1
Authority
EP
European Patent Office
Prior art keywords
current
contact arrangement
contact
spacer
holder
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
Application number
EP86730133A
Other languages
German (de)
English (en)
Other versions
EP0219449A1 (fr
Inventor
Reinhard Dipl.-Ing. Kugler
Bernd Dipl.-Phys. Rambotzki
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
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0219449A1 publication Critical patent/EP0219449A1/fr
Application granted granted Critical
Publication of EP0219449B1 publication Critical patent/EP0219449B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5822—Flexible connections between movable contact and terminal
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
    • 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
    • H01H2001/228—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 with insulating spacers between the contact bars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5822—Flexible connections between movable contact and terminal
    • H01H2001/5827—Laminated connections, i.e. the flexible conductor is composed of a plurality of thin flexible conducting layers

Definitions

  • the invention relates to a contact arrangement for low-voltage circuit breakers with a pivotably mounted holder for a movably arranged switching lever, which is connected to a fixed connection point by a flexible current band.
  • a contact arrangement of this type is known for example from DE-A-1 220 923.
  • a multi-pole circuit breaker there is a holder for each pole with a movable switching lever and a flexible current band. If a low-voltage circuit breaker for a higher rated current is to be created on this basis, the usual way can be to provide two or more identical contact levers with associated current strips in a common holder for each pole instead of a single one.
  • Current forces which remain without harmful consequences, act on these parts, which are arranged spatially in parallel and through which parallel currents flow, provided there is a sufficient distance between the parts, since the forces depend on the distance.
  • the current strips are layered from thin, hard-rolled copper sheets, which are connected at their ends by welding, soldering or other suitable methods. Since the current forces act transversely to the stratification of the metal sheets, they can be deformed or torn at their fastening points, which can lead to increasing heating and ultimately to damage and failure of the switch.
  • the object of the present invention is to enable the current bands to be as close as possible to one another without sacrificing mobility and thus to contribute to creating a space-saving and powerful contact arrangement.
  • this object is achieved in that an insulating spacer supported on the holder is arranged in a parallel arrangement of two or more current paths per pole between the current bands.
  • This spacer supports the adjacent current strips and thus prevents excessive bending under the influence of the attractive forces that act at high currents. As a result of the attachment of the spacer to the holder, the relative movements between the current strips and the spacer remain small.
  • the spacer is movably mounted with an opening on the bearing pin forming the pivot bearing of the holder.
  • the spacer can have particularly small dimensions with this attachment, which is favorable for the size and the weight of the spacer.
  • the spacer can also have a contact surface for each current band and a stop surface to limit the mobility of the spacer relative to a stationary counterpart. It is thereby achieved that the current bands cannot bend freely under the influence of the current forces in a loop-shaped design, such that the current forces only act on one leg of each current band. This can be used to exert a force compensating the contact-lifting forces on the contact levers. This force is supported on the holder of the contact arrangement via the stop surface.
  • the spacer can be designed in a pocket-like manner by means of a protective arch adjoining the contact surface, on the one hand to protect the current strips and on the other hand to collect individual sheets of the current strips if these should be broken under extreme stress on the circuit breaker. This prevents the metal sheets from spreading far apart from the current band and coming into contact with earthed parts of the circuit breaker.
  • Figure 1 shows the current path of a pole of a low-voltage circuit breaker, partly in section.
  • a spacer is shown in Figure 2 as a single part.
  • FIG. 3 shows a section A-B of the spacer according to FIG. 2.
  • the current path shown in FIG. 1 has an insulating material part 10 as a carrier of an upper forked connecting rail 11 and a lower, likewise forked connecting rail 12. With this is a flexible current band 13 in conductive connection, which forms the power supply to a contact lever 14 shown in section.
  • the current band 13 extends to a contact carrier 15, on which a contact pad 16 is located.
  • the insulating material carrier 10 contains a pressed-in threaded bushing 17, into which a clamping screw 20 passing through the current strip 13 and the connecting bar 12 is screwed.
  • the contact lever 14 is pivotally held about a hinge pin 21 on a support 22, which in turn is pivotable about a bearing pin 23.
  • a drive lever 24 which is connected in a manner not shown to a drive device and which acts on a hinge pin 25 passing through the support 22, the support 22 is pivoted with the contact lever 14 for switching on and off.
  • the contact lever 14 rests with its contact pad 16 on a stationary contact pad 26, which also rests on one is attached to the insulating carrier 10 by a clamping screw 27 attached contact carrier 30.
  • the contact carrier is conductively connected to the upper connecting rail 11 by the clamping screw 27.
  • the current bath 13 is loop-shaped in its lower region and thereby surrounds the bearing pin 23 of the holder 22.
  • a current flowing through the current band 13 thus causes forces which act to widen the loop, that is to say that strive to remove the legs 18 and 19 of the current band 13 from each other.
  • attractive forces occur between the current band 13 visible in FIG. 1 and a similar current band lying in front of or behind the current band 13 in the plane of the drawing. As a result, not only can these current strips come into an undesirable conductive connection with one another, but the thin metal sheets from which the current strips are made can also be subjected to high mechanical stress, particularly at their clamping points or connection points.
  • a deformation of this type is prevented by a spacer 31, which covers the loop area of the current band 13 with the legs 18 and 19.
  • the wall part 32 of the spacer 31 (FIGS. 2 and 3) lying between the current strips has a through opening 33 which is provided for the passage of the bearing bolt 23 of the carrier 22.
  • a corresponding oversize of the through opening 33 can ensure that inevitable manufacturing tolerances do not cause any difficulties during assembly and that there is a certain mobility of the spacer 31 relative to the holder 22.
  • the wall part 32 is adjoined on both sides by an approximately arcuate extension 34, which results in an approximately pocket-like configuration, as shown in particular in FIGS. 1 and 2.
  • the lugs 34 form a support surface 35 on their side facing the current strips, which acts as a flat support of the leg 18 of each current strip 13, as shown in FIG. 1. Subsequent to the contact surfaces 35, the shoulders 34 have a protective arch 36 which runs at such a distance from the associated current band 13 that the movement cannot be impeded.
  • the protective sheet 36 is dimensioned such that a sheet of the current strip 13, for example breaking at the point designated 37, is prevented from bending downward and is rather caught by the protective sheet 36 and completely enclosed. This prevents such a damaged sheet from coming into contact with live parts.
  • a current flowing through the current band 13 produces forces which tend to cause the legs 18 and 19 to spread. These forces can be deliberately used to compensate for contact-lifting forces caused by the same current between the contact pads 16 and 26 by being introduced in a suitable manner into the contact lever 14 acting as a two-armed lever.
  • the spacer 31 has a stop surface 38 which cooperates with a stationary counter surface 40 which is part of an angle 41 which is also gripped by the clamping screw 20. The force exerted by the leg 18 of the current band 13 on the support surface 35 is thus supported with respect to the insulating material carrier 10.
  • the spacer 31 shown as an individual part in FIGS. 2 and 3 is provided for contact arrangements with two parallel current paths per pole and, in addition to a wall part 32 separating the adjacent current bands, has two approaches 34 adjoining on both sides.
  • These spacers can also be used for contact arrangements with more than two parallel current paths; For example, for four parallel current paths, two identical spacers 31 according to FIGS. 2 and 3 can be used in connection with a modified spacer to be fitted between them, which essentially corresponds to the wall part 32 without the lugs 34.
  • Spacers can also be used for any number of parallel current paths, which correspond to FIGS. 2 and 3 with the difference that one of the two approaches 34 is omitted.
  • the insulating property of the spacer can be achieved by coating a metal part or by producing the spacer as a whole from an insulating plastic.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Contacts (AREA)

Claims (4)

1. Dispositif de contact (1) pour un disjoncteur à basse tension, comportant un support (22) monté pivotant pour un levier de sectionnement (14) monté de manière à être mobile et relié par une bande conductrice flexible (13) à un point de raccordement fixe (rail de raccordement 12), caractérisé par le fait que, dans le cas du montage en parallèle de deux ou plusieurs voies de courant pour chaque pôle, une entretoise isolante (31), prenant appui sur le support (22) est disposée entre les bandes conductrices (13).
2. Dispositif de contact suivant la revendication 1, caractérisé par le fait que l'entretoise (31) est montée, dans un état mobile, au moyen d'une ouverture (33) 15 sur un tourillon (23) formant le pivot du support (22). -
3. Dispositif de contact suivant la revendication 1, caractérisé par le fait que l'entretoise (31) possède pour des bandes conductrices (13) en forme de boucles, une surface d'appui (35) pour une branche (18) de la boucle de la bande conductrice (13) et une surface de butée (38) servant à limiter le déplacement de l'entretoise (31) par rapport à une pièce antagoniste fixe (41).
4. Dispositif de contact suivant la revendication 3, caractérisé par le fait que l'entretoise (31) possède, pour la bande conductrice (13), un élément coudé de protection (36) se raccordant à la surface d'appui (35).
EP86730133A 1985-10-07 1986-09-05 Disposition de contact pour un disjoncteur à basse tension à cordon de courant flexible Expired EP0219449B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853536112 DE3536112A1 (de) 1985-10-07 1985-10-07 Kontaktanordnung fuer niederspannungs-leistungsschalter mit einem biegsamen stromband
DE3536112 1985-10-07

Publications (2)

Publication Number Publication Date
EP0219449A1 EP0219449A1 (fr) 1987-04-22
EP0219449B1 true EP0219449B1 (fr) 1989-06-21

Family

ID=6283219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86730133A Expired EP0219449B1 (fr) 1985-10-07 1986-09-05 Disposition de contact pour un disjoncteur à basse tension à cordon de courant flexible

Country Status (4)

Country Link
US (1) US4727345A (fr)
EP (1) EP0219449B1 (fr)
JP (1) JPS6288222A (fr)
DE (2) DE3536112A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4996507A (en) * 1988-08-01 1991-02-26 Westinghouse Electric Corp. CT quick change assembly and force transmitting spacer
JPH0452319U (fr) * 1990-09-07 1992-05-01
DE19643607A1 (de) * 1996-05-13 1997-11-20 Siemens Ag Leistungsschalter für Niederspannung mit Anschlußschienen
DE19715115C2 (de) * 1997-04-11 2001-07-19 Aeg Niederspannungstech Gmbh Schaltvorrichtung
DE19930813A1 (de) * 1999-06-30 2001-01-04 Siemens Ag Leistungsschalter mit Anschlußschienen für verschiedene Nennströme
IT1314039B1 (it) * 1999-10-08 2002-12-03 Abb Ricerca Spa Polo elettrico per interruttore di potenza di bassa tensione.
DE20106248U1 (de) * 2001-04-04 2002-08-08 Siemens AG, 80333 München Anschlussschiene für Niederspannungs-Leistungsschalter
CN100359618C (zh) * 2004-01-28 2008-01-02 三菱电机株式会社 断路器
DE102004020654A1 (de) * 2004-04-22 2005-11-10 Siemens Ag Schaltkontaktanordnung
WO2012017282A1 (fr) * 2010-07-31 2012-02-09 Larsen & Toubro Limited Arrangement des contacts amélioré permettant de résister à un courant de défaut élevé dans un dispositif de commutation à faible tension
CN103065821A (zh) * 2012-12-28 2013-04-24 常熟开关制造有限公司(原常熟开关厂） 自动转换开关的触头机构
US9184013B2 (en) * 2013-06-21 2015-11-10 General Electric Company Conductor guide member for a circuit breaker terminal assembly
KR101884327B1 (ko) * 2016-09-22 2018-08-02 계양전기 주식회사 전동 공구용 악세서리
CN106971867B (zh) * 2017-05-24 2019-12-31 首瑞（天津）电气设备有限公司 动触头及断路器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB193538A (en) * 1921-12-02 1923-03-01 Gen Electric Improvements in and relating to electric switches
US3200228A (en) * 1959-09-22 1965-08-10 Zinsco Electrical Products Dual switch unit
US3280287A (en) * 1963-05-10 1966-10-18 Westinghouse Electric Corp Circuit breaker with improved terminal-conductor means
DE1220923B (de) * 1963-03-06 1966-07-14 Siemens Ag Elektrischer Leistungsschalter mit in Luft schaltenden Kontakten
JPS5692344U (fr) * 1979-12-18 1981-07-23
US4638277A (en) * 1985-10-01 1987-01-20 Westinghouse Electric Corp. Circuit breaker with blow open latch

Also Published As

Publication number Publication date
US4727345A (en) 1988-02-23
DE3664075D1 (en) 1989-07-27
DE3536112A1 (de) 1987-04-09
EP0219449A1 (fr) 1987-04-22
JPH0353729B2 (fr) 1991-08-16
JPS6288222A (ja) 1987-04-22

Similar Documents

Publication Publication Date Title
EP0219449B1 (fr) Disposition de contact pour un disjoncteur à basse tension à cordon de courant flexible
EP0223732B1 (fr) Disjoncteur multipolaire de puissance basse tension avec barres de courant
EP0222684B1 (fr) Montage de contacts pour interrupteur à charge à basse tension avec des contacts principaux et des contacts d'amorçage d'arc
DE2833497A1 (de) Elektrischer niederspannungs-lastschalter
DE1197160B (de) Elektrischer Schalter
EP0360368B1 (fr) Montage de contact butant à levier pour interrupteur de puissance à basse tension avec des contacts principaux et des contacts d'amorçage d'arc
EP1423862B1 (fr) Systeme de contacts de commutation comportant un dispositif destine a amplifier une force de contact s'exer ant entre des contacts de commutation
CH622125A5 (fr)
EP0358287B1 (fr) Elément-moteur pour un disjoncteur électrique multipolaire de puissance basse tension
EP1494252A1 (fr) Doigt de contact pour disjoncteur haute tension à lame
DE3407858C2 (fr)
DE809827C (de) Elektrische Steckkontaktvorrichtung
EP1360709A1 (fr) Dispositif a contact de commutation
DE3513908A1 (de) Freiluftschaltgeraet fuer hochspannungsschaltanlagen
EP0910858B1 (fr) Dispositif de contact de commutation pourvu d'une articulation destinee a un levier de contact
WO1998009307A1 (fr) Dispositif de contact de commutation mobile a ressorts a force de contact
EP0091082B1 (fr) Appareil de commutation actionné électromagnétiquement
DE102016214368B4 (de) Kontaktanordnung für ein Hochspannungs-Schaltgerät sowie dessen Verwendung und Herstellung
DE69305147T2 (de) Kontaktvorrichtung
DE102011119306A1 (de) Kontaktpaarung mit einer Doppelkontaktstelle für ein elektrisches Schaltgerät
EP0135789B1 (fr) Sectionneur haute tension, en particulier sectionneur monocolonne, capable de commuter des courants
DE3111286C2 (fr)
EP0028740A1 (fr) Appareil de commutation contenant un dispositif de contact
EP1213806B1 (fr) Installation de commutation haute-tension, sectionneur pour jeu de barres double et appareil de commutation
DE3485854T2 (de) Lastschalter.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT SE

RTI1 Title (correction)
17P Request for examination filed

Effective date: 19870522

17Q First examination report despatched

Effective date: 19880902

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

REF Corresponds to:

Ref document number: 3664075

Country of ref document: DE

Date of ref document: 19890727

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 86730133.5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19950821

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19950912

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19960905

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19960906

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960905

EUG Se: european patent has lapsed

Ref document number: 86730133.5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19980916

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000531

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20001120

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020501

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050905