EP2489052A1 - Commutateur de puissance, en particulier pour basses tensions - Google Patents

Commutateur de puissance, en particulier pour basses tensions

Info

Publication number
EP2489052A1
EP2489052A1 EP10765418A EP10765418A EP2489052A1 EP 2489052 A1 EP2489052 A1 EP 2489052A1 EP 10765418 A EP10765418 A EP 10765418A EP 10765418 A EP10765418 A EP 10765418A EP 2489052 A1 EP2489052 A1 EP 2489052A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
contact
lever
spring
cover
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Withdrawn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
EP10765418A
Other languages
German (de)
English (en)
Inventor
Andreas Hierl
Siegfried Pirker
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 EP2489052A1 publication Critical patent/EP2489052A1/fr
Withdrawn legal-status Critical Current

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
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/205—Details concerning the elastic mounting of the rotating bridge in the rotor
    • 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
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/2058—Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts

Definitions

  • the invention relates to a circuit breaker, in particular for low-voltage, according to the preamble of claim 1.
  • Low-voltage circuit-breakers are well known and have a movable and a fixed contact for opening and closing, which contacts face each other.
  • the contact pieces are arranged at the free end of a contact lever, which is rotatably mounted on or in a switching ⁇ wave.
  • the contact lever extends transversely to the longitudinal axis of the switching shaft and protrudes with its free end out of the switching shaft.
  • On the same side of the rotary ⁇ axis the contact piece opposite is located in the outer contour of the contact lever a recess for mounting a bolt, which is aligned parallel to the shift shaft.
  • At both ends of the pin engage springs which clock the con- lever in the closing direction with a torque beaufschla ⁇ gene.
  • the contact lever is usually out as a double lever ⁇ forms.
  • Leaf and winding wire springs are used as springs. These can be as tension, compression or torsion springs out ⁇ leads.
  • the contacts open after exceeding a predetermined current threshold. This creates an arc between the contact pieces. This has the desired property that it limits the current.
  • the plasma generated by the arc and fuel gas whose temperature is well over 1000 degrees Celsius, has the disadvantage that it can damage parts of the rotor. In the case of molded case circuit breakers, this particularly affects the springs due to their small construction volume. To compensate for deformations of the springs, for example, they are oversized, making them due to their larger mass greater heat resistance exhibit. However, this again leads to a larger installation volume in the rotor housing and a stronger starting mechanism is required. It is also known to guide the springs by deflecting parts to the outside and shield there by means of a lid.
  • the solution provides that the two springs each have a cover element supported on the bolt, which extends along the spring and is arranged in each case between the spring and the arc (in the case of opening contacts) which forms in each case between the contact pieces when the circuit breaker is opened.
  • a structurally simple embodiment provides that interconnected at ⁇ the cover on a cross-member.
  • the attachment of the two cover elements is simplified when the two cover elements are supported on the cross member on the bolt.
  • the transverse element is clamped on the bolt.
  • the two cover elements are designed as plastic parts or sheets.
  • the load capacity of the switch can be increased by the fact that the contact lever is designed as a double lever.
  • Fig. 1 is a switching shaft segment of a switching shaft of a
  • FIG 3 shows the cover of the switching shaft segment with transverse ⁇ element and the two cover elements of FIG 1,
  • FIG. 4 the cover of FIG. 3 in a spatial
  • FIG. 5 the cover of FIG. 3 in a side view.
  • Fig. 1 and 2 show a switching shaft segment 1 of a switching shaft la of a power switch for low voltages (not further shown), wherein the housing in Fig. 2 is adoptedschnit ⁇ th.
  • the switching shaft la with its axis of rotation lb is formed from a plurality of laterally interconnected switching shaft segments 1.
  • In the switching shaft segment 1 is a contact lever 4 navgela ⁇ siege, which is designed as a double lever and transverse to the axis of rotation of the switching shaft segment 1 (the switching shaft la) he ⁇ stretches.
  • the two ends of the contact lever 4 protrude on ⁇ the sides of the switching shaft segment 1 out. At their ends, they enter on one side of the outer contour
  • cover elements 10 are arranged in the form of plastic parts or sheets for covering the springs 7a at both ends, which are based on Fig. 1 down.
  • the cover elements 10 are in each case between a spring 7a and the associated contact pieces 5 or contacts, between which the arc is formed at a short circuit and opening contacts each.
  • Fig. 3 the cover 8 is shown with the cross member 9 and the two cover members 10 and the bolt 7 with the springs 7a alone.
  • the cover 8 is shown in FIG. 4 in a three-dimensional representation; whose side view can be seen in Fig. 5.
  • a taper 11 of the cross member 9 ensures the clamping when attaching the cover 8 on the pin 7th

Landscapes

  • Breakers (AREA)

Abstract

L'invention concerne un commutateur de puissance, en particulier pour basses tensions, avec un axe de commutation (1a) et un levier de contact (4) monté pivotant, s'étendant perpendiculairement à l'axe longitudinal de l'axe de commutation (1a) et faisant saillie par rapport à l'axe de commutation (1a). Le levier de contact possède, sur un côté de son contour extérieur, la pièce de contact (5) d'un contact mobile et, sur l'autre côté de son contour extérieur, un logement (6) pour le montage d'un goujon (7) qui est exposé à la force de deux ressorts (7a) placés chacun d'un côté du levier de contact (4) et exerçant respectivement un couple sur le levier de contact (4) dans la direction de la fermeture. Afin d'assurer la fonction du commutateur de puissance à l'aide d'un couvercle de construction simple et simple à monter, il est proposé que les deux ressorts (7a) possèdent chacun un élément de couverture (10) qui s'étend sur la longueur du ressort (7a) et qui est disposé à chaque fois entre le ressort (7a) et l'arc électrique qui se forme entre les pièces de contact (5) lorsque le commutateur de puissance est ouvert.
EP10765418A 2009-10-15 2010-10-06 Commutateur de puissance, en particulier pour basses tensions Withdrawn EP2489052A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009050296A DE102009050296A1 (de) 2009-10-15 2009-10-15 Leistungsschalter, insbesondere für Niederspannungen
PCT/EP2010/064896 WO2011045214A1 (fr) 2009-10-15 2010-10-06 Commutateur de puissance, en particulier pour basses tensions

Publications (1)

Publication Number Publication Date
EP2489052A1 true EP2489052A1 (fr) 2012-08-22

Family

ID=43302155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10765418A Withdrawn EP2489052A1 (fr) 2009-10-15 2010-10-06 Commutateur de puissance, en particulier pour basses tensions

Country Status (5)

Country Link
US (1) US8872050B2 (fr)
EP (1) EP2489052A1 (fr)
CN (1) CN102549694B (fr)
DE (1) DE102009050296A1 (fr)
WO (1) WO2011045214A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012201939B4 (de) 2012-02-09 2021-08-05 Siemens Aktiengesellschaft Schalteinheit für ein elektrisches Schaltgerät
US10395854B2 (en) * 2017-11-08 2019-08-27 Eaton Intelligent Power Limited Electrical switching apparatus, and crossbar assembly and spring cap therefor
CN108766805B (zh) * 2018-05-31 2020-04-28 深圳市泰永电气科技有限公司 自动转换开关电器的双断点动触头组件及触头装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1540591C3 (de) * 1965-11-17 1974-09-19 Siemens Ag, 1000 Berlin Und 8000 Muenchen Lasttrennschalter mit beweglichem Schaltstück je Polbahn
SE461557B (sv) 1989-04-28 1990-02-26 Asea Brown Boveri Kontaktanordning foer elkkopplare
DE19836754B4 (de) * 1998-08-13 2006-10-05 Aeg Niederspannungstechnik Gmbh & Co Kg Schaltwelleneinheit für Schalter
US6281461B1 (en) * 1999-12-27 2001-08-28 General Electric Company Circuit breaker rotor assembly having arc prevention structure
US6639168B1 (en) * 2000-03-17 2003-10-28 General Electric Company Energy absorbing contact arm stop
US6965292B2 (en) * 2003-08-29 2005-11-15 General Electric Company Isolation cap and bushing for circuit breaker rotor assembly
US7005594B2 (en) * 2004-04-16 2006-02-28 Ls Industrial Systems Co., Ltd. Movable contactor assembly of circuit breaker
KR100575243B1 (ko) 2004-04-16 2006-05-02 엘에스산전 주식회사 배선용 차단기의 가동 접촉자 어셈블리
KR100618610B1 (ko) * 2004-12-07 2006-09-08 엘에스산전 주식회사 배선용 차단기의 한류기구 장치
KR100881361B1 (ko) 2007-07-12 2009-02-02 엘에스산전 주식회사 접압 스프링 보호 기구를 갖는 기중 차단기용 가동접촉자
DE102007040163A1 (de) 2007-08-21 2009-02-26 Siemens Ag Schaltgerät mit einer Schaltwelle zur Lagerung einer Drehkontaktbrücke sowie mehrpolige Schaltgeräteanordnung
US7977592B2 (en) * 2007-09-11 2011-07-12 Siemens Industry, Inc. Double break disconnect/contact system
DE102008007365A1 (de) * 2008-01-30 2009-08-06 Siemens Aktiengesellschaft Schaltgerät, insbesondere Leistungsschaltgerät

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011045214A1 *

Also Published As

Publication number Publication date
CN102549694A (zh) 2012-07-04
WO2011045214A1 (fr) 2011-04-21
US20120199453A1 (en) 2012-08-09
DE102009050296A1 (de) 2011-04-21
CN102549694B (zh) 2015-04-15
US8872050B2 (en) 2014-10-28

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