EP1334503B1 - Systeme de contact pour disjoncteurs limiteurs de courant - Google Patents

Systeme de contact pour disjoncteurs limiteurs de courant Download PDF

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Publication number
EP1334503B1
EP1334503B1 EP01996876A EP01996876A EP1334503B1 EP 1334503 B1 EP1334503 B1 EP 1334503B1 EP 01996876 A EP01996876 A EP 01996876A EP 01996876 A EP01996876 A EP 01996876A EP 1334503 B1 EP1334503 B1 EP 1334503B1
Authority
EP
European Patent Office
Prior art keywords
contact
arrangement according
springs
link
sliding elements
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 - Lifetime
Application number
EP01996876A
Other languages
German (de)
English (en)
Other versions
EP1334503A1 (fr
Inventor
Franz Böder
Volker Heins
Guido Dedenbach
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 EP1334503A1 publication Critical patent/EP1334503A1/fr
Application granted granted Critical
Publication of EP1334503B1 publication Critical patent/EP1334503B1/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
    • 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 a contact arrangement for current-limiting circuit breaker in Low voltage range, especially for current limiting circuit breakers, after the preamble of claim 1.
  • EP-0314540-B1 is a contact arrangement for a low-voltage multi-pole circuit breaker known with insulating material, which means a in Housing incorporated plain bearing about a fixed transverse axis rotatable switching shaft wherein the axis is perpendicular to the longitudinal direction of each pole.
  • the two fasteners or driver elements of the two springs are in relation to an imaginary Rotary axis of the contact bridge or the fixed transverse axis of the switching shaft diametrically opposite.
  • This arrangement of the springs ensures a free displacement the imaginary axis of rotation of the contact bridge with respect to the fixed Transverse axis of the shift shaft and allows a moment of force for uniform Distribution of contact pressure and elastic positioning of the contact bridge with two translatory degrees of freedom, wherein the contact bridge through the self-centering action of the springs on the longitudinal axis in an equilibrium position is held.
  • the connecting rails with the fixed contacts are looped, so that they, if they flowed through a short-circuit current be, the contact bridge against the force of the tension springs in the direction create a repelling position repelling, electrodynamic forces.
  • These Contact arrangement does not allow adaptation to a desired course of nor on the electrodynamically repelled contact bridge acting restoring force the possibility of a tilted position of the electrodynamically repelled contact bridge to enable.
  • EP-0560697-B1 is a low-voltage circuit breaker with a contact arrangement per pole known with two symmetrical to each other equipped on both sides of the contact bridge arranged pairs of tension springs is.
  • the springs are symmetrical on both sides of the axis of rotation of the contact bridge arranged and each have an end mounted on the contact bridge.
  • Electrodynamically repelled contact bridge is an opposite end of the said springs on the ends of each one slidably displaceable in a recess arranged the shift shaft, mounted as a transverse axis pin and the contact bridge has a pair of control cams symmetrical to its axis of rotation which are designed to be in the end portion of the repulsion stroke of the contact bridge with each one of the pins interact to the movement of the Decelerate contact bridge.
  • the pins are limited in the recesses displaced stored, with the diametrically opposite recesses approximate along the line of action of the associated springs.
  • the profile of the cams can be designed so that the Contact bridge latched in the repelling position; wherein the rotatably mounted switching shaft is actuated by an actuating mechanism of the circuit breaker and the opening stroke of the contact bridge is limited so that the rotation of the switching shaft during the turn-off movement, a lifting of the pins from the cams causes.
  • the pivoting movement of the contact bridge in the direction of the repulsion position shifts the line of action of each spring and shortens the lever arm, whereby the restoring force moment exerted by the springs on the contact bridge is reduced.
  • the invention is based on the object, a favorable course of the contact force on the so-called stroke of the contact bridge in the closed position, the compensates for wear and tear on contacts and contacts over time to obtain.
  • An advantageous development consists in the formation of a detent recess in the the end of the repulsion movement assignable part of the cams, whereby a unwanted reclosing of the contact arrangement is prevented.
  • An expedient embodiment of the invention is in pairs on opposite lying sides of the contact bridge arranged, designed as tension springs Contact force springs and formed with their second ends in as transverse pins Hang sliding elements. This can be two opposite each Contact force spring at the first or second ends via a connecting web be integrally connected.
  • An alternative advantageous embodiment of the invention is that as Compression springs trained contact force springs formed by at the contact bridge Guide means to guide.
  • the pairs on opposite Pages of the contact bridge arranged Kunststoffkraftfedem to the plunger-shaped or pin-shaped sliding elements to be set.
  • the contact arrangement 2 according to FIG. 1 is for a pole of a not shown multi-pole circuit breaker provided.
  • the circuit breaker includes in usually a Isolierstoffgeophuse, actuated by a drive switch lock, feeding and outgoing connection elements as well as tripping devices for overload and short circuit.
  • In the housing is about a fixed transverse axis. 4 a switching shaft 6 made of insulating mounted rotatably, wherein the transverse axis 4 runs perpendicular to the longitudinal direction 8 of the pole.
  • the coupled with the switch lock Switching shaft 6 is made of polweise associated switching shaft segments in shape composed of double discs, of which only the rear disc is shown is.
  • a rotary contact bridge 10 extends along the longitudinal direction 8 of FIG Pols in a play-loaded receptacle 12 of the switching shaft 6 and facing each other lying contact pieces 14, which in closed position with fixed Contacts 16 interact.
  • the two discs of the shift shaft 6 are over two drivers 18 connected.
  • each side of the contact bridge 10 are each formed as two tension springs Contact force springs 20 arranged, the required contact pressure between the Contact pieces 14 and connected to connecting rails 22 fixed Create contacts 16.
  • the first ends 24 of the contact force springs 20 are on the Contact bridge 10 are fixed and are in relation to the axis of rotation of the contact bridge 10 diametrically opposite.
  • the axis of rotation diametrically opposed recesses 26 are provided.
  • transverse sliding elements 28 slidably mounted in the form of steel pins.
  • the second ends 30 each in pairs on both sides of the contact bridge 10 opposite Kunststofffedem 20 mounted.
  • each slider 28 is constantly connected to an associated control cam 32 pressed.
  • the cams 32 are on the shift shaft 6 with respect to the Transverse axis 4 rotationally symmetrical opposite standing.
  • the recesses 26 extend in this example along the line of action of the contact force springs 20.
  • Die Cams 32 are in the manner opposite to the line of action of the contact force springs 20th aligned, that the contact bridge 10 a stable position about a fictitious axis of rotation occupies with two translational degrees of freedom in certain areas.
  • the contact arrangement 3 according to FIG. 2 acts in principle in the same way as the above described why the following description is based in essence the differences are limited.
  • Sliding elements 29 are designed here as a ram, the with the second ends 30 of two trained as compression springs contact force springs 21 are connected, whereby the sliding elements 29 constantly in contact with the cams 32 of the switching shaft 10 are. With their first ends 24, the contact force springs are based 21 against each one of the transverse axis 4 directed away boundaries 34 of recesses 27 in the form of partially cylindrical guide means, at the contact bridge 10 for guiding the contact force springs 21 and the Sliding elements 29 are formed.
  • the present invention is not limited to the above-described embodiments but also includes all the same in the context of the invention Embodiments.
  • the invention for example, to the effect further develop that the contact bridge is at least partially hollow and within the contact bridge only two trained as compression springs contact force springs are arranged, which are formed at their second ends with a plunger Sliding elements are connected.
  • each two pairs arranged on both sides of the contact bridge and as tension springs trained contact force springs at their first or second ends are integrally connected via transverse intermediate webs.
  • Yet another training the invention is that designed as transverse pins Store sliding elements in slot-shaped recesses of the contact bridge.

Claims (11)

  1. Système de contact pour disjoncteurs limiteurs de courant à au moins un pôle, dans la zone des tensions basses comportant un logement de matière isolante, comprenant
    un arbre de transmission (6) inséré de manière rotative dans le logement autour d'un axe transversal (4) fixe, dans lequel l'axe transversal (4) s'étend perpendiculairement à la direction longitudinale (8) de chaque pôle,
    un contact à pont rotatif (10), qui s'étend le long de la direction longitudinale (8) du pôle dans un évidement (12) présentant du jeu de l'arbre de transmission (6) et qui présente des pièces de contact (14) diamétralement en vis-à-vis, qui coopèrent avec les contacts (16) fixes à la position de branchement,
    des ressorts à force de contact (20 ;21) disposés à l'intérieur de l'arbre de transmission (6), dont les premières extrémités (24) fixées sur le contact à pont (10) reposent diamétralement en vis-à-vis par rapport à l'axe de rotation du contact à pont (10) et dont les deuxièmes extrémités (30) reposent essentiellement diamétralement en vis-à-vis par rapport à l'axe transversal (4),
    deux barres de connexion (22) reliées chacune à un des contacts fixes (16), qui produisent, lors du passage d'un courant de court-circuit, des forces électrodynamiques, qui repoussent le contact à pont (10) dans la direction d'une position de répulsion contraire à l'action des ressorts à force de contact (20 ; 21),
    caractérisé en ce que,
    les deuxièmes extrémités (30) des ressorts à force de contact (20 ;21) sont insérées de manière déplaçable dans des évidements (26 ;27) allongés du contact à pont (10) et
    sont équipées d'éléments coulissants (28 ;29), qui se trouvent à des emplacements fixes des courbes de commande (32) réalisées dans l'arbre de transmission (6).
  2. Système de contact selon la revendication précédente, caractérisé en ce que, à la fin du mouvement de répulsion du contact à pont (10), les éléments coulissants (28 ;29) coopèrent avec des cavités de verrouillage réalisées sur les courbes de commande (32).
  3. Système de contact selon une des revendications précédentes, caractérisé en ce que, à la position de branchement du contact à pont (10), les évidements (26 ;27) s'étendent approximativement dans la direction de la ligne d'action des ressorts à force de contact (20 ;21) afférents.
  4. Système de contact selon une des revendications précédentes, caractérisé en ce que les courbes de commande (32) s'étendent approximativement parallèlement à la ligne de liaison des contacts (16) fixes.
  5. Système de contact selon une des revendications précédentes, caractérisé en ce que des ressorts à force de contact (20) sont disposés respectivement des deux côtés du contact à pont (10) comme ressorts de traction, lesquels sont suspendus par paires par leurs deuxièmes extrémités (30) aux éléments coulissants (28) réalisés comme des broches transversales.
  6. Système de contact selon la revendication précédente, caractérisé en ce que les premières ou les deuxièmes extrémités (24 ;30) sont reliées en un seul bloc par des inter-panneaux transversaux.
  7. Système de contact selon une des revendications 1 à 4, caractérisé en ce que les ressorts à force de contact (21) sont réalisés comme des ressorts de pression guidés à travers le contact à pont (10).
  8. Système de contact selon la revendication 7, caractérisé en ce que deux ressorts à force de contact (21) sont respectivement disposés des deux côtés du contact à pont (10), dont les deuxièmes extrémités (30) sont reliées par les éléments coulissants configurés comme des pilons.
  9. Système de contact selon la revendication 7, caractérisé en ce que deux ressorts à force de contact (21) sont disposés dans le contact à pont (10) configuré de manière au moins partiellement creuse et les éléments coulissants (29) sont configurés comme des pilons.
  10. Système de contact selon la revendication 7, caractérisé en ce que deux ressorts à force de contact (21) sont disposés respectivement des deux côtés du contact à pont (10), lesquels sont fixés par paires par leurs deuxièmes extrémités aux éléments coulissants configurés comme des broches transversales.
  11. Système de contact selon une des revendications précédentes, caractérisé en ce que l'arbre de transmission (6) est constitué de segments d'arbres de transmission coordonnés par pôles.
EP01996876A 2000-11-16 2001-11-02 Systeme de contact pour disjoncteurs limiteurs de courant Expired - Lifetime EP1334503B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10056816 2000-11-16
DE10056816A DE10056816A1 (de) 2000-11-16 2000-11-16 Kontaktanordnung für strombegrenzende Schutzschalter
PCT/EP2001/012704 WO2002041346A1 (fr) 2000-11-16 2001-11-02 Systeme de contact pour disjoncteurs limiteurs de courant

Publications (2)

Publication Number Publication Date
EP1334503A1 EP1334503A1 (fr) 2003-08-13
EP1334503B1 true EP1334503B1 (fr) 2005-03-09

Family

ID=7663522

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01996876A Expired - Lifetime EP1334503B1 (fr) 2000-11-16 2001-11-02 Systeme de contact pour disjoncteurs limiteurs de courant

Country Status (3)

Country Link
EP (1) EP1334503B1 (fr)
DE (2) DE10056816A1 (fr)
WO (1) WO2002041346A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103681144A (zh) * 2013-12-06 2014-03-26 贵州长征开关制造有限公司 一种双断点断路器

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7005594B2 (en) * 2004-04-16 2006-02-28 Ls Industrial Systems Co., Ltd. Movable contactor assembly of circuit breaker
KR100574788B1 (ko) * 2004-10-07 2006-04-27 엘에스산전 주식회사 배선용 차단기의 접촉자 어셈블리
DE102008007365A1 (de) * 2008-01-30 2009-08-06 Siemens Aktiengesellschaft Schaltgerät, insbesondere Leistungsschaltgerät
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
DE102008039187B4 (de) 2008-08-20 2019-06-19 Siemens Aktiengesellschaft Leistungsschalter, insbesondere für Niederspannungen
DE102009052965B3 (de) 2009-11-12 2011-07-21 Eaton Industries GmbH, 53115 Rotativer Doppelkontakt
CN102024632A (zh) * 2010-12-19 2011-04-20 浙江达达电器有限公司 低压断路器的触头系统
DE102011003131A1 (de) 2011-01-25 2012-07-26 Siemens Aktiengesellschaft Elektrischer Schalter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2622347B1 (fr) * 1987-10-26 1995-04-14 Merlin Gerin Dispositif de coupure pour un disjoncteur multipolaire a contact rotatif double
FR2688626B1 (fr) * 1992-03-13 1994-05-06 Merlin Gerin Disjoncteur a boitier moule a pont de contacts freine en fin de course de repulsion.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103681144A (zh) * 2013-12-06 2014-03-26 贵州长征开关制造有限公司 一种双断点断路器

Also Published As

Publication number Publication date
WO2002041346A1 (fr) 2002-05-23
EP1334503A1 (fr) 2003-08-13
DE50105560D1 (de) 2005-04-14
DE10056816A1 (de) 2002-05-23

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