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EP1695365A1 - Systeme de contact a pivotement electrodynamique pour sectionneurs de puissance - Google Patents

Systeme de contact a pivotement electrodynamique pour sectionneurs de puissance

Info

Publication number
EP1695365A1
EP1695365A1 EP04804737A EP04804737A EP1695365A1 EP 1695365 A1 EP1695365 A1 EP 1695365A1 EP 04804737 A EP04804737 A EP 04804737A EP 04804737 A EP04804737 A EP 04804737A EP 1695365 A1 EP1695365 A1 EP 1695365A1
Authority
EP
European Patent Office
Prior art keywords
contact bridge
contact
rotary contact
tilting
shaft segment
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Withdrawn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
EP04804737A
Other languages
German (de)
English (en)
Inventor
Kurt Händler
Wolfgang Kremers
Heinz Pursch
Hartwig Stammberger
Albert Zacharias
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.)
Eaton Industries GmbH
Original Assignee
Moeller GmbH
Kloeckner Moeller GmbH
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 Moeller GmbH, Kloeckner Moeller GmbH filed Critical Moeller GmbH
Publication of EP1695365A1 publication Critical patent/EP1695365A1/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Withdrawn legal-status Critical Current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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/102—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement
    • H01H77/104—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement with a stable blow-off position

Definitions

  • the invention relates to an electrodynamically tilting contact system for circuit breakers, in particular current-limiting circuit breakers, in which a switching shaft segment, a rotary contact bridge pivotably mounted therein and contact force springs form components of a toggle mechanism which holds the rotary contact bridge in a repelling position after electrodynamically caused repulsion of fixed contacts.
  • a contact system for one pole of a circuit breaker with a rotary contact bridge which electrically connects or separates two opposite fixed contacts.
  • the rotary contact bridge is mounted in a shift shaft segment with a floating bearing via two contact force springs designed as compression springs.
  • the contact force springs are mounted opposite to each other on both sides of the rotary contact bridge in bores of the selector shaft and constantly interact with control cams of the rotary contact bridge via their free spring ends provided with sliding elements.
  • the rotary contact bridge, the contact force springs and the switching shaft segment form a toggle mechanism if the control cams are designed appropriately.
  • a contact system for one pole of a circuit breaker with a one-armed contact lever which connects or separates a fixed contact and a connecting conductor which is electrically connected to the contact lever in a tilting axis.
  • the contact lever which is mounted on a selector shaft with the tilt axis, is acted upon on both sides by a pair of contact force tension springs.
  • the tension springs are suspended between the contact lever and the selector shaft on the other side of the tilt axis and form a toggle mechanism with the contact lever and the selector shaft.
  • the tipping spring mechanism With electrody- Namely repulsion of the contact lever from the fixed contact go in the tipping point, which is also called dead center, the tipping spring mechanism, the two connecting straight lines between the spring suspensions through the tilt axis and form the tipping point plane, which can also be referred to as the dead center plane.
  • the transfer of such a toggle mechanism to a contact system with a rotary contact bridge would disadvantageously lead to an enlargement of the contact system due to the required working volume of the tension springs.
  • the invention is therefore based on the object of improving the reproducibility of the tipping behavior while avoiding additional construction volume.
  • the contact system combines the advantages of a tilting spring mechanism, in which the connecting straight line between the contact force spring ends runs through the tilting axis of the tilting point system in the tilting point, with the advantages of using compression springs.
  • the tilt axis falls in the bearing axis of the rotary contact bridge. No noticeable friction losses occur in the toggle mechanism formed by the rotary contact bridge, the contact pressure springs, the rockers and the shift shaft segment. The tolerance-increasing transverse load on the contact force springs is largely avoided. This results in a higher reproducibility of the tilting behavior of the contact system and thus increased security for the configuration of the system to be protected with the circuit breaker.
  • the oblong hole mounting of the selector shaft enables uncomplicated compensation of the switch-on position of the rotary contact bridge with asymmetrical erosion of the contact pads connected to the rotary contact bridge or the fixed contacts.
  • the longitudinal extension of the elongated hole bearing parallel or at an acute angle to the tipping point level of the tipping spring mechanism prevents one
  • the contact-side mounting of the contact force springs in the mounting holes of the rockers leads to a further saving of installation space, especially when rocker bars provided with the mounting holes extend laterally over the rotary contact bridges.
  • the ends of the contact force springs by holding knobs and / or holding troughs formed in the shift shaft segment.
  • the repelling movement of the rotary contact bridge is expediently limited by stops in the switchgear housing.
  • the elongated hole bearing is expediently produced in that the bearing axis for the rotary contact bridge rests in the lateral elongated holes of the selector shaft segment.
  • the direction of the elongated holes advantageously runs in the tilt point plane.
  • the rotary contact bridge can of course be equipped with an elongated hole through which the bearing axis defined in the shift shaft segment runs.
  • Figures 1, 3 and 5 the longitudinal section of a contact clock system according to the invention in the switch-on, tipping point or repulsion position;
  • Figures 2, 4 and 6 the perspective view of essential details of the contact system according to the invention in the switch-on, tipping point or repulsion position.
  • the contact system 2 according to the invention shown for one pole of a multi-pole circuit breaker contains two opposing fixed contacts 4 and a rotary contact bridge 6.
  • the rotary contact bridge 6 is pivotally mounted in its axis of symmetry 8 via a circular bearing bore 10 on a cylindrical bearing axis 12.
  • the rotary contact bridge 6 protrudes on both sides from a selector shaft segment 14, the bearing axis 12 lying with both ends in elongated slots 16 in the selector shaft segment 14.
  • the selector shaft segment 14 is mounted with adjacent selector shaft segments in a switching device housing 18, which is only indicated rudimentarily.
  • the fixed contacts 4 and the rotary contact bridges 6 have contact supports 20 and 22 at the end, which in the switched-on position according to FIG. 1 under the force effect of two pairs of contact force springs
  • the contact system 2 is transferred from the switch-off position to the switch-on position and vice versa by an actuation mechanism, which is not shown - since this is not essential for the invention.
  • repelling electrodynamic forces occur which move the rotary contact bridge 6 from the switch-on position shown in FIGS. 1 and 2 to the repulsion position shown in FIGS. 5 and 6 flings.
  • the loop-shaped design of the fixed contacts 4 contributes significantly to an increase in the electrodynamic repulsive forces.
  • the contact system 2 is equipped with a tilting spring mechanism that is designed to be rotationally symmetrical to the bearing axis 12.
  • the toggle mechanism is composed of the rotary contact bridge 6, the switching shaft segment 14, the two pairs of contact pressure springs 24 and two rockers 26.
  • the rockers 26 are mounted on the rotary contact bridge 6 opposite their axis of rotational symmetry 8.
  • the rockers 26 are in the form of a U-shaped body with a central web
  • rocker arms 26 can be tilted with their bearing legs 32 in associated bearing receptacles 34, which are formed in the front narrow sides 36 of the rotary contact bridge 6.
  • the rocker bars 30 protrude beyond the bearing legs 32 in the direction of the rotational symmetry axis 8, so that the rockers 26 with their rocker bars 30 laterally over the
  • a receiving bore 38 is formed in each rocker web 30.
  • Holding troughs 40 with holding knobs 42 facing the bearing axis 12 are formed on the opposite side in the switching shaft segment 14.
  • the contact force springs 24 are supported between the switching shaft segment 14 and the rockers 26 in such a way that the spring ends 44 remote from the contact bridge are seated on the retaining knobs 42 and the spring ends 46 near the contact bridge are supported in the receiving bores 38.
  • the tilting jump mechanism described above is arranged in the sense of the task solution in a special way in relation to the tilting point position shown in FIGS. 3 and 4, which is passed through from the switch-on to the push-off position in the course of the push-off movement of the rotary contact bridge 6.
  • the longitudinal spring axes 48, the tipping axes 50 of the rockers 26 and the rotational symmetry axis 8 of the rotary contact bridge 6 fall into one and the same tipping point plane 52.
  • the elongated longitudinal axis 54 should only include a small angle - at most an acute angle - with the tipping point plane 52. In the example, the elongated longitudinal axes 54 ideally run in the tilting point plane 52.
  • stops 56 are formed in the switchgear housing 18, which face each other with respect to the bearing axis 12 and to which the rotary contact bridge 6 with its narrow sides 36 abuts.
  • the present invention is not limited to the embodiment described above.
  • the invention can be modified such that Realization of the elongated hole bearing in the rotary contact bridge 6 is an elongated hole running through the axis of symmetry 8 through which the bearing axis 12 runs, which in turn is supported in circular bearing bores formed laterally in the selector shaft segment 14.

Landscapes

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

Abstract

L'invention concerne un système de contact à pivotement électrodynamique pour sectionneurs de puissance. Un segment d'arbre de commutation (14), un pont de contact rotatif (6) monté pivotant dedans et des ressorts de force de contact (24) forment les éléments constitutifs d'un mécanisme à pivotement brusque, qui maintient le pont de contact rotatif (6) dans une position d'éjection, après éjection de contacts fixes (4), par voie électrodynamique. L'invention vise à améliorer la reproductibilité de la tenue en pivotement, tout en évitant un encombrement supplémentaire. A cet effet, il est prévu comme autres éléments constitutifs du mécanisme à pivotement brusque, deux bascules (26) qui sont montées pivotantes sur le pont de contact rotatif (6). Les ressorts de force de contact (24) s'appuient entre le segment d'arbre de commutation (14) et les bascules (26). Les axes longitudinaux des ressorts (48), les axes de pivotement (50) des bascules (26) et l'axe de symétrie en rotation (8) du pont de contact rotatif (6) dans le plan de point de pivotement (52) du mécanisme à pivotement brusque (52) forment un angle au plus aigu, perpendiculairement au pivot du palier (12).
EP04804737A 2003-12-16 2004-12-09 Systeme de contact a pivotement electrodynamique pour sectionneurs de puissance Withdrawn EP1695365A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10358828A DE10358828A1 (de) 2003-12-16 2003-12-16 Elektrodynamisch kippendes Kontaktsystem für Leistungsschalter
PCT/EP2004/053361 WO2005059941A1 (fr) 2003-12-16 2004-12-09 Systeme de contact a pivotement electrodynamique pour sectionneurs de puissance

Publications (1)

Publication Number Publication Date
EP1695365A1 true EP1695365A1 (fr) 2006-08-30

Family

ID=34672794

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04804737A Withdrawn EP1695365A1 (fr) 2003-12-16 2004-12-09 Systeme de contact a pivotement electrodynamique pour sectionneurs de puissance

Country Status (4)

Country Link
US (1) US7394032B2 (fr)
EP (1) EP1695365A1 (fr)
DE (1) DE10358828A1 (fr)
WO (1) WO2005059941A1 (fr)

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DE102005028474B4 (de) * 2005-06-20 2008-04-30 Siemens Ag Kontaktsystem, insbesondere für ein Schaltgerät
DE102006009645A1 (de) * 2006-03-02 2007-09-06 Moeller Gmbh Schaltwelleneinheit für ein elektrisches Kontaktsystem
DE102007001471A1 (de) * 2007-01-05 2008-07-10 Siemens Ag Elektrische Schalteinrichtung
DE102008007363A1 (de) * 2008-01-30 2009-08-06 Siemens Aktiengesellschaft Drehkontaktsystem für ein Schaltgerät sowie Schaltgeräte mit einem derartigen Drehkontaktsystem
DE102008007364A1 (de) * 2008-01-30 2009-08-27 Siemens Aktiengesellschaft Drehkontaktsystem für ein Schaltgerät, insbesondere für ein Leistungsschaltgerät, sowie Schaltgeräte mit einem derartigen Drehkontaktsystem
DE102008007365A1 (de) * 2008-01-30 2009-08-06 Siemens Aktiengesellschaft Schaltgerät, insbesondere Leistungsschaltgerät
CN101320659B (zh) * 2008-07-14 2012-03-28 上海电科电器科技有限公司 塑壳断路器的旋转双断点结构
DE102008037967A1 (de) * 2008-08-13 2010-02-18 Siemens Aktiengesellschaft Drehkontaktsystem mit Toleranzausgleich für ein Schaltgerät sowie Schaltgeräte mit einem derartigen Drehkontaktsystem
DE102008039187B4 (de) 2008-08-20 2019-06-19 Siemens Aktiengesellschaft Leistungsschalter, insbesondere für Niederspannungen
DE102008047247A1 (de) 2008-09-10 2010-04-15 Siemens Aktiengesellschaft Kontaktsystem für ein Schaltgerät mit einem Schaltwellensegment drehbar gelagerten Kontaktglied und mit einer axial dazwischen angeordneten Rasteinrichtung
DE102008049442B4 (de) * 2008-09-29 2015-02-19 Siemens Aktiengesellschaft Drehkontaktsystem für ein Schaltgerät, insbesondere für ein Leistungsschaltgerät, mit einem radial von innen aufgebrachten schließenden Drehmoment
DE102009035344A1 (de) 2009-07-23 2011-01-27 Siemens Aktiengesellschaft Leistungsschalter, insbesondere für Niederspannungen
CN101859669B (zh) * 2010-06-28 2012-01-11 贵州长征开关制造有限公司 断路器旋转双断点结构
US8350168B2 (en) 2010-06-30 2013-01-08 Schneider Electric USA, Inc. Quad break modular circuit breaker interrupter
DE102011075729A1 (de) * 2011-05-12 2012-11-15 Siemens Aktiengesellschaft Elektrischer Schalter
DE102011081736A1 (de) * 2011-08-29 2013-02-28 Siemens Aktiengesellschaft Elektrischer Schalter
EP2831897B1 (fr) 2012-03-28 2017-03-01 Larsen & Toubro Limited Sytème de contacts amélioré à coupure double pour disjoncteurs à boîtier moulé
CN108091500B (zh) * 2016-11-23 2021-05-18 浙江正泰电器股份有限公司 双断点触桥的压力自平衡结构
CN106601564B (zh) * 2016-12-01 2018-08-17 上海电器科学研究所（集团）有限公司 一种电接触系统
DE102016124639B4 (de) * 2016-12-16 2022-05-25 Eaton Intelligent Power Limited Selbstrücksetzender Strombegrenzer
CN109411247A (zh) * 2017-08-18 2019-03-01 日立电梯（中国）有限公司 一种开关防回弹装置
CN107578967B (zh) * 2017-10-24 2020-08-14 法泰电器（江苏）股份有限公司 一种塑壳断路器旋转式双断点触头结构

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Also Published As

Publication number Publication date
US7394032B2 (en) 2008-07-01
DE10358828A1 (de) 2005-07-14
US20070251809A1 (en) 2007-11-01
WO2005059941A1 (fr) 2005-06-30

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