WO2002041346A1 - Systeme de contact pour disjoncteurs limiteurs de courant - Google Patents

Systeme de contact pour disjoncteurs limiteurs de courant Download PDF

Info

Publication number
WO2002041346A1
WO2002041346A1 PCT/EP2001/012704 EP0112704W WO0241346A1 WO 2002041346 A1 WO2002041346 A1 WO 2002041346A1 EP 0112704 W EP0112704 W EP 0112704W WO 0241346 A1 WO0241346 A1 WO 0241346A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
bridge
springs
contact bridge
arrangement according
Prior art date
Application number
PCT/EP2001/012704
Other languages
German (de)
English (en)
Inventor
Franz Böder
Volker Heins
Guido Dedenbach
Original Assignee
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 filed Critical Moeller Gmbh
Priority to DE50105560T priority Critical patent/DE50105560D1/de
Priority to EP01996876A priority patent/EP1334503B1/fr
Publication of WO2002041346A1 publication Critical patent/WO2002041346A1/fr

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 a contact arrangement for current-limiting circuit breakers in the low-voltage range, in particular for current-limiting circuit breakers, according to the preamble of claim 1.
  • Rotary contact bridge which extends along the longitudinal axis of the pole in a playful receptacle of the switching shaft and has opposing contact pieces, which cooperate with the fixed contacts in the switched-on position, and two tension springs attached to the inside of the switching shaft, which act on the contact bridge and thus establish a fixed one Ensure contact pressure of the contact pieces on the fixed contacts, one of the ends of each tension spring cooperating with a driver element of the selector shaft.
  • the two springs are mounted in the contact bridge receptacle with the other end of each spring attached to a contact bridge fastener.
  • the two fastening elements or driver elements of the two springs are diametrically opposed with respect to an imaginary axis of rotation of the contact bridge or the fixed transverse axis of the selector shaft.
  • This arrangement of the springs ensures free movement of the imaginary axis of rotation of the contact bridge in relation to the fixed transverse axis of the selector shaft and at the same time enables a moment of force for uniform distribution of the contact pressure and an elastic positioning of the contact bridge with two translational degrees of freedom, whereby the contact bridge by the self-centering effect of the springs on the longitudinal axis is held in an equilibrium position.
  • the connecting rails with the fixed contacts are loop-shaped, so that when a short-circuit current flows through them, the contact bridge generates repulsive electrodynamic forces against the force of the tension springs in the direction of a repulsion position.
  • Contact arrangement does not allow adaptation to a desired course of the restoring force acting on the electrodynamically repelled contact bridge, nor does it allow the tilting position of the electrodynamically repelled contact bridge.
  • Braking and possibly holding the contact bridge electrodynamically repelled by the fixed contacts is an opposite end of the springs on the ends of a slidably arranged in a recess of the switching shaft, designed as a transverse axis, and the contact bridge has a pair of control curves symmetrical to its axis of rotation , which are designed such that they cooperate with one of the pins in the end section of the repulsion stroke of the contact bridge in order to brake the movement of the contact bridge.
  • the pins are slidably mounted in the recesses, the diametrically opposite recesses running approximately along the line of action of the associated springs.
  • the springs ensure elastic positioning of the contact bridge in the cutout of the selector shaft and thereby define a fictitious axis of rotation of the contact bridge in relation to the selector shaft.
  • the profile of the control cams arranged in relation to the movable contact pieces causes a displacement of the pins in the recess and a continuous tension of the springs corresponding to the pivoting movement of the contact bridge in the direction of the repulsion position, with a storage of the energy in the springs.
  • the profile of the control cams can be designed so that the contact bridge locks in the push-off 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 such that the rotation of the switching shaft during the opening movement causes the pins to lift off the control cams causes.
  • the line of action of each spring shifts and thereby shortens the lever arm, as a result of which the restoring force moment exerted by the springs on the contact bridge is reduced.
  • the invention has for its object to obtain a more favorable course of the contact force via the so-called lifting of the contact bridge in the switch-on position, which compensates for the wear of the contacts and contact pieces that occurs over time.
  • An advantageous further development consists in the formation of a locking recess in the part of the control cams which can be assigned to the end of the repelling movement, as a result of which an undesired reclosing of the contact arrangement is prevented.
  • An alternative expedient embodiment of the invention consists in guiding the contact force springs designed as compression springs through guide means formed on the contact bridge.
  • the contact force springs arranged in pairs on opposite sides of the contact bridge can be fixed to the slide-shaped or pin-shaped sliding elements.
  • the contact arrangement is suitable for modular, multi-pole contact systems.
  • Figure 1 in longitudinal section a first embodiment of the contact arrangement according to the invention in the ON position
  • Figure 2 in longitudinal section a second embodiment of the contact arrangement according to the invention in the switched-on position.
  • the contact arrangement 2 according to FIG. 1 is provided for one pole of a multi-pole circuit breaker (not shown further).
  • the circuit breaker conventionally comprises an insulating housing, a switching device that can be actuated by a drive. lock, feeding and outgoing connection elements as well as release devices for overload and short circuit.
  • a switching shaft 6 made of insulating material is rotatably mounted in the housing about a fixed transverse axis 4, the transverse axis 4 running perpendicular to the longitudinal direction 8 of the pole.
  • the switching shaft 6 coupled to the switching lock is composed of switching shaft segments assigned in poles in the form of double disks, of which only the rear disk is shown.
  • a rotary contact bridge 10 extends along the longitudinal direction 8 of the pole in a playful receptacle 12 of the control shaft 6 and has mutually opposite contact pieces 14 which cooperate with fixed contacts 16 in the switched-on position.
  • the two disks of the control shaft 6 are connected via two drivers 18.
  • contact force springs 20 Arranged on each side of the contact bridge 10 are two contact force springs 20 designed as tension springs, which provide the required contact pressure between the contact pieces 14 and the fixed ones connected to connecting rails 22
  • the first ends 24 of the contact force springs 20 are fixed to the contact bridge 10 and are diametrically opposite with respect to the axis of rotation of the contact bridge 10.
  • diametrically opposed recesses 26 are also provided with respect to the axis of rotation. Transverse sliding elements are located in the recesses 26 which are open towards the periphery
  • each sliding element 28 is constantly pressed against an associated control curve 32.
  • the control cams 32 are on the selector shaft 6 with respect to the
  • Transverse axis 4 formed in a rotationally symmetrical opposite.
  • the cutouts 26 run along the line of action of the contact force springs 20.
  • the control cams 32 are aligned with respect to the line of action of the contact force springs 20 in such a way that the contact bridge 10 assumes a stable position about a fictitious axis of rotation with two translational degrees of freedom in certain areas.
  • the contact bridge 10 When a short-circuit current flows through the contact arrangement 2, the contact bridge 10 is pushed back counterclockwise against the force action of the contact force springs 20 from the switch-on position shown in the direction of a repulsion position by electrodynamic forces.
  • the sliding elements 28 slide counter-clockwise along the control cams 32.
  • Detent recesses can be provided on the control cams, into which the sliding elements 28 can snap, as a result of which the electrodynamically repelled contact arm 10 can assume a stable tilting position. This prevents the contact arm 10 from falling back until the latching between the sliding elements 28 and the latching recesses is released by resetting the actuated switch 6 by rotating the selector shaft 6 clockwise.
  • the contact arrangement 3 according to FIG. 2 acts in principle in the same way as the one described above, which is why the following description is essentially limited to the differences.
  • Sliding elements 29 are designed here as plungers, which are connected to the second ends 30 of two contact force springs 21 designed as compression springs, as a result of which the sliding elements 29 are constantly in contact with the control cams 32 of the selector shaft 10. With their first ends 24, the contact force springs 21 are supported against respective boundaries 34 of recesses 27 directed away from the transverse axis 4 in the form of partially cylindrical guide means which are formed on the contact bridge 10 for guiding the contact force springs 21 and the sliding elements 29 ,
  • the present invention is not limited to the embodiments described above, but also encompasses all embodiments having the same effect in the sense of the invention.
  • the invention can be further developed in such a way that the contact bridge is at least partially hollow and only two contact force springs designed as compression springs are arranged within the contact bridge and are connected at their second ends to slide elements designed as plungers.
  • Another further training consists in the fact that because two contact force springs arranged in pairs on both sides of the contact bridge and designed as tension springs are connected in one piece at their first or their second ends via transverse intermediate webs.
  • the sliding elements designed as transverse pins are mounted in slot-shaped recesses in the contact bridge.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Abstract

L'invention concerne un système de contact pour des disjoncteurs limiteurs de courant dans le domaine à basse tension, en particulier pour des sectionneurs de puissance limiteurs de courant. L'objectif de l'invention est d'améliorer la force de contact sur la course supplémentaire d'un système de contact (2) due à l'usure de contact. Ce système de contact (2) comprend un pont de contact tournant (10) suspendu dans un arbre de commande (6) par des ressorts à force de contact (20) avec un axe de rotation fictif, les premières extrémités (24) des ressorts à force de contact (20) étant fixées au pont de contact tournant (10) de façon diamétralement opposée. Les deuxièmes extrémités (30) des ressorts à force de contact (20) sont montées de façon déplaçable dans des évidements allongés (26) du pont de contact tournant (10) et sont équipées d'éléments de glissement (28) qui sont en appui permanent avec des cames de commande (32) formées dans l'arbre de commande (6).
PCT/EP2001/012704 2000-11-16 2001-11-02 Systeme de contact pour disjoncteurs limiteurs de courant WO2002041346A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50105560T DE50105560D1 (de) 2000-11-16 2001-11-02 Kontaktanordnung für strombegrenzende schutzschalter
EP01996876A EP1334503B1 (fr) 2000-11-16 2001-11-02 Systeme de contact pour disjoncteurs limiteurs de courant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10056816.5 2000-11-16
DE10056816A DE10056816A1 (de) 2000-11-16 2000-11-16 Kontaktanordnung für strombegrenzende Schutzschalter

Publications (1)

Publication Number Publication Date
WO2002041346A1 true WO2002041346A1 (fr) 2002-05-23

Family

ID=7663522

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/012704 WO2002041346A1 (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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2267381A1 (es) * 2004-04-16 2007-03-01 Ls Industrial Systems Co., Ltd Montaje de contactor movible de interruptor de circuito.
ES2304271A1 (es) * 2004-10-07 2008-10-01 Ls Industrial Systems Co. Ltd Conjunto de contactor para disyuntor de circuito.
WO2011058120A1 (fr) 2009-11-12 2011-05-19 Eaton Industries Gmbh Double contact rotatif
WO2012083829A1 (fr) * 2010-12-19 2012-06-28 浙江达达电器有限公司 Ligne de contact pour disjoncteur
US8680409B2 (en) 2011-01-25 2014-03-25 Siemens Aktiengesellschaft Electric switch

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008007365A1 (de) * 2008-01-30 2009-08-06 Siemens Aktiengesellschaft Schaltgerät, insbesondere Leistungsschaltgerät
DE102008007364A1 (de) * 2008-01-30 2009-08-27 Siemens Aktiengesellschaft Drehkontaktsystem für ein Schaltgerät, insbesondere für ein Leistungsschaltgerät, sowie Schaltgeräte mit einem derartigen Drehkontaktsystem
DE102008007363A1 (de) * 2008-01-30 2009-08-06 Siemens Aktiengesellschaft Drehkontaktsystem für ein Schaltgerät sowie Schaltgeräte mit einem derartigen Drehkontaktsystem
DE102008039187B4 (de) * 2008-08-20 2019-06-19 Siemens Aktiengesellschaft Leistungsschalter, insbesondere für Niederspannungen
CN103681144B (zh) * 2013-12-06 2015-12-30 贵州长征开关制造有限公司 一种双断点断路器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314540A1 (fr) * 1987-10-26 1989-05-03 Merlin Gerin Dispositif de coupure pour un disjoncteur multipolaire à contact rotatif double
EP0560697A1 (fr) * 1992-03-13 1993-09-15 Schneider Electric Sa Disjoncteur à boîtier moulé à pont de contacts freiné en fin de course de répulsion

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314540A1 (fr) * 1987-10-26 1989-05-03 Merlin Gerin Dispositif de coupure pour un disjoncteur multipolaire à contact rotatif double
EP0560697A1 (fr) * 1992-03-13 1993-09-15 Schneider Electric Sa Disjoncteur à boîtier moulé à pont de contacts freiné en fin de course de répulsion

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2267381A1 (es) * 2004-04-16 2007-03-01 Ls Industrial Systems Co., Ltd Montaje de contactor movible de interruptor de circuito.
ES2304271A1 (es) * 2004-10-07 2008-10-01 Ls Industrial Systems Co. Ltd Conjunto de contactor para disyuntor de circuito.
WO2011058120A1 (fr) 2009-11-12 2011-05-19 Eaton Industries Gmbh Double contact rotatif
US9136067B2 (en) 2009-11-12 2015-09-15 Eaton Industries Gmbh Rotative double contact
WO2012083829A1 (fr) * 2010-12-19 2012-06-28 浙江达达电器有限公司 Ligne de contact pour disjoncteur
KR101442790B1 (ko) 2010-12-19 2014-09-24 저지앙 다다 일렉트리컬 코., 엘티디 차단기의 콘택트 시스템
RU2577847C2 (ru) * 2010-12-19 2016-03-20 Чжэцзян Дада Электрикал Ко., Лтд Контактная система разъединителя
US8680409B2 (en) 2011-01-25 2014-03-25 Siemens Aktiengesellschaft Electric switch

Also Published As

Publication number Publication date
DE10056816A1 (de) 2002-05-23
EP1334503B1 (fr) 2005-03-09
EP1334503A1 (fr) 2003-08-13
DE50105560D1 (de) 2005-04-14

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