EP1302960A2 - Dispositif de contact pour disjoncteur limiteur de courant - Google Patents

Dispositif de contact pour disjoncteur limiteur de courant Download PDF

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Publication number
EP1302960A2
EP1302960A2 EP02022438A EP02022438A EP1302960A2 EP 1302960 A2 EP1302960 A2 EP 1302960A2 EP 02022438 A EP02022438 A EP 02022438A EP 02022438 A EP02022438 A EP 02022438A EP 1302960 A2 EP1302960 A2 EP 1302960A2
Authority
EP
European Patent Office
Prior art keywords
contact
arrangement according
contact bridge
contact arrangement
tension springs
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.)
Granted
Application number
EP02022438A
Other languages
German (de)
English (en)
Other versions
EP1302960B1 (fr
EP1302960A3 (fr
Inventor
Franz Böder
Guido Dedenbach
Gerd Voiss
Matthias Schaar
Manfred Will
Hagen Trinks
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 Electrical IP GmbH and Co KG
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 EP1302960A2 publication Critical patent/EP1302960A2/fr
Publication of EP1302960A3 publication Critical patent/EP1302960A3/fr
Application granted granted Critical
Publication of EP1302960B1 publication Critical patent/EP1302960B1/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
    • 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, in particular for current-limiting circuit breakers, according to the preamble of claim 1.
  • EP 0314540 B1 is such a contact arrangement for a Low-voltage multipole circuit breaker with insulating material known, the a means incorporated in the housing slide bearing about a fixed transverse axis having rotatable switching shaft, wherein the axis perpendicular to the longitudinal Middle plane of each pole is.
  • Each pole comprises two connection bars fixed contacts, a rotary contact bridge extending along the median plane extends in a playful recording of the shift shaft and opposing one another Having contact pieces, which in closed position with the fixed Interacting contacts, and two mounted inside the shift shaft tension springs, which act on the contact bridge and so a specified contact pressure ensure the contact pieces on the fixed contacts, with one of the ends each tension spring cooperates with a driver element of the switching shaft.
  • the both springs are mounted in the receptacle for the contact bridge, with the other End of each spring is attached to a fastener of the contact bridge.
  • the two fasteners or driver elements of the two springs are with respect to an imaginary axis of rotation of the contact bridge or the fixed Transverse axis of the shift shaft diametrically opposite. This arrangement ensures the springs a free displacement of the imaginary axis of rotation of the contact bridge in Reference to the fixed transverse axis of the shift shaft and allows at the same time Moment of force for uniform distribution of the contact pressure and an elastic Positioning of the contact bridge with two translational degrees of freedom, wherein the Contact bridge due to the self-centering effect of the springs on the mid-plane is held in an equilibrium position.
  • the connecting rails with the fixed ones Contacts are looped so that when they come from one Short-circuit current to be flowed through, a contact bridge against the Force effect of the tension springs in the direction of a repelling position repulsive, electrodynamic Generate forces.
  • a contact bridge against the Force effect of the tension springs in the direction of a repelling position repulsive, electrodynamic Generate forces is the Danger of being thrown up by electrodynamic forces in the event of a short circuit movable contact bridge will damage their stop or fall back too fast to unwanted re-ignitions of arcing and / or contact welding can lead.
  • EP 0560697B1 is a low-voltage circuit breaker with a contact arrangement per pole known on both sides of the contact bridge, the extends in the median plane of the pole, with two symmetrically arranged Pair of tension springs is equipped.
  • the springs are symmetrical on both Arranged sides of the axis of rotation of the contact bridge and have each one on the contact bridge stored end on.
  • contact bridge For braking and, if necessary, holding the electrodynamically repelled from the fixed contacts contact bridge is an opposite end of said springs on the ends respectively arranged slidably in a notch in the shift shaft, mounted as a transverse axis rod and has the contact bridge symmetrical to its axis of rotation on a pair of cams, which are designed so that they in the end portion of the repulsion stroke of the contact bridge with one of the rods cooperate to decelerate the movement of the contact bridge.
  • the bars are limited slidably mounted in the notches, wherein the diametrically opposite Notches approximately along the line of action of the associated springs run.
  • the springs ensure elastic positioning of the contact bridge in the recess of the switching shaft and thereby define a fictitious axis of rotation the contact bridge with respect to the switching shaft.
  • the profile of the opposite the moving Contact pieces arranged control cams causes a shift of Rods in the notch and one of the pivoting movement of the contact bridge in Direction of the repulsion position corresponding continuous tension of the springs with a storage of energy in the springs.
  • the profile of the cams can so be interpreted that the contact bridge locked in the repelling position; the rotatably mounted switching shaft by an actuating mechanism of the circuit breaker is actuated and the opening stroke of the contact bridge is limited so that the rotation of the switching shaft during the opening movement lifting the rods caused by the cams.
  • the object of the invention is therefore in a simplified contact arrangement with improved delay behavior of the electrodynamically spin-coated rotary contact bridge.
  • Circuit breakers are suitable for use with current-limiting circuit breakers, the occurrence of an excessively high current, in particular a Short circuit current, in conjunction with triggering protective organs either themselves switch off or within a switch assembly in terms of their short-circuit current carrying capacity selectively staggered circuit breakers by another Circuit breaker to be disconnected from the short-circuit current.
  • An advantageous inhibition behavior for the contact bridge is obtained when using constructive design and / or dimensioning of the extensions and / or the connecting pieces one between closed position and repelling position or in reverse Direction to be overcome maximum force is present.
  • One to achieve An alternating development of force advantageous development consists in the step-like Training the extensions.
  • the step-like design can be a snap connection at the end of the repulsion movement between the connectors and the extensions are further developed, whereby the spin-on contact bridge is arrested after reaching their repulsion position until they reach the final Opening the contact arrangement by triggering protective devices of the circuit breaker is released from this detent position.
  • the tension springs are stored with the connecting pieces in at the contact bridge trained first notches.
  • tension spring pairs equipped at their second, free ends with the extensions and preferably are supported by a steel pin in the shift shaft.
  • extensions are formed on additional springs, which preferably together in a U-shaped configuration with the second ends of the Switzerlandfederpare about ösenartige training are supported by steel pins in the shift shaft.
  • the extension pieces preferably engage under the transverse axis the connectors, however, the reverse arrangement is possible.
  • the contact arrangement 2 according to the invention according to FIG. 1 is not for one pole further provided multi-pole circuit breaker provided.
  • the circuit breaker conventionally comprises an insulating material housing, actuatable by a drive Switch lock, feeding and outgoing connection elements as well as tripping devices for overload and short circuit.
  • a shift shaft 6 rotatably mounted, wherein the transverse axis z is perpendicular runs to the median plane xy of the pole.
  • the switching shaft 6 is assigned from polweise Heidelbergmaschineensegmenten assembled.
  • a rotary contact bridge 10 extends along the median plane xy in a play-like receptacle 12 of the Switching shaft 6 and has opposing contact pieces 14 which in Switching position with fixed contacts 16 cooperate.
  • the contact bridge 10 has a slot 11 (see, for example, Fig. 4) with which it is fixed on a fixed, in the transverse axis z of the switching shaft 6 extending bearing axis 7 is mounted.
  • In the receptacle 12 are on both sides of the contact bridge 10 and the median plane xy arranged two tension springs 18, which has the required contact force between the Apply contact pieces 14 and the fixed contacts 16.
  • the tension springs 18 have a mounted on the contact bridge 10 first end 19 and a mounted on the shift shaft 6 second end 21. On each side of the contact bridge10 are the first ends 19 with respect to the axis of rotation of the contact bridge 10 and the second ends 21 of the respective tension springs 18 with respect to Transverse axis z of the shift shaft 6 diametrically opposite.
  • the tension springs 18 are symmetrical arranged in relation to the median plane xy. Two each on opposite Side of the median plane xy located first ends 19 are integrally across transverse Connectors 20 connected, and two each on opposite Side of the median plane xy located second ends 21 are in transverse steel pins 23 hooked.
  • the connecting pieces 20 form with the associated pairs the tension springs 18 U-shaped double tension springs and are non-positively in first notches 25 of the contact bridge 10.
  • the steel pins 23 are in corresponding second notches 27 of the shift shaft 6.
  • the contact arrangement 2 continues to be resilient in the switching shaft 6 attached elements provided in the embodiment of FIGS. 1 to 10 are identical to the second ends 21 of the tension springs 18 and each with a simple Winding and a subsequent free-running extension 28 are equipped.
  • the two loop-shaped ends 21 each two with respect the median plane xy opposite tension springs 18 each one of the Steel pins 23.
  • the two extensions 28 each of a double tension spring extend to to the connector 20 of the other double tension spring and reach under the respective connector 20.
  • electrodynamically effected repulsion of the contact bridge 10 as shown in FIGS. 5 to 10 rub the connecting pieces 20 and the extensions 29 with increasing repulsion on each other.
  • the pair is symmetrical about both sides of the median plane xy located tension springs 18 shown in FIG. 1 to 10 in detail.
  • the two springs 18 are U-shaped at their first ends 19 via the connecting piece 20 merged to the double tension spring and point to its loop-shaped wound second ends 21, the extensions 28.
  • the extensions 28 are provided opposite the longitudinal axis of the tension springs 18 with a bending angle, which is dimensioned in such a way that with increasing electrodynamic repulsion the contact bridge 10 the power requirement from the electrodynamic acceleration and the relapse acceleration to overcome the force between the connector 20 of a pair of tension springs and the extensions 28 of the other tension spring pair increases.
  • a slightly different designed pair of tension springs 18 is shown. This also formed as a U-shaped double tension spring tension spring distinguishes from the above-described tension spring pair essentially by with a gradation 33 provided embodiment of their extensions 29 and through the arcuate formation of their second ends 22.
  • the gradation 33 are dimensioned such that in the end position of the ejected Contact bridge 10, the connecting piece 20 of each one spring pair with the Extensions 29 of the other spring pair in the region of their gradation 33rd a latching connection is received, which is only a conscious return of the contact bridge 10 allowed from this end position.
  • Each pair of tension springs is stored under the influence the tensile force of the tension springs 18 with the second ends 22 arcuate to one each the steel pins 23 shown in Fig. 1.
  • FIGS. 15 and 16 show that, as an alternative to those described above Embodiments each two extensions 28 part of another element as.
  • Each designed as a U-shaped torsion spring auxiliary spring 30 is with her tortuous outer thighs on one of the steel pins 23 between the second To store ends 21 of the tension springs 18 of each one Ceifederpases.
  • To the outer legs are each equipped with an extension 28.
  • the extensions of the tension springs 18 are omitted extended middle part 31 of the auxiliary spring 30 is supported in the switching shaft 6 in the Assume that the extensions 28 spring force against the connector 20 of the other tension spring pair is present.
  • 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 may be carried out, for example, in the manner be that the extensions 28 or 29 with a directed to the transverse axis z Component of the spring force on the associated connectors 20 engage.
  • the tension springs 18 in the context of the inventive concept by Replace compression springs or torsion springs, suitably between the contact bridge 10 and the shift shaft 6 are arranged.

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  • Breakers (AREA)
EP20020022438 2001-10-12 2002-10-04 Dispositif de contact pour disjoncteur limiteur de courant Expired - Lifetime EP1302960B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10150550 2001-10-12
DE2001150550 DE10150550C1 (de) 2001-10-12 2001-10-12 Kontaktanordnung für strombegrenzende Schutzschalter

Publications (3)

Publication Number Publication Date
EP1302960A2 true EP1302960A2 (fr) 2003-04-16
EP1302960A3 EP1302960A3 (fr) 2005-03-16
EP1302960B1 EP1302960B1 (fr) 2015-02-25

Family

ID=7702371

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020022438 Expired - Lifetime EP1302960B1 (fr) 2001-10-12 2002-10-04 Dispositif de contact pour disjoncteur limiteur de courant

Country Status (2)

Country Link
EP (1) EP1302960B1 (fr)
DE (1) DE10150550C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009035344A1 (de) 2009-07-23 2011-01-27 Siemens Aktiengesellschaft Leistungsschalter, insbesondere für Niederspannungen
US8071898B2 (en) 2007-08-21 2011-12-06 Siemens Aktiengesellschaft Switching device with a switching shaft for mounting a rotary contact link and multipole switching device arrangement

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10239641B3 (de) * 2002-08-29 2004-02-12 Moeller Gmbh Kontaktsystem für einen Niederspannungsschalter
DE20313872U1 (de) * 2003-09-06 2005-01-05 Moeller Gmbh Kontaktanordnung für strombegrenzende Schutzschalter
DE102005028474B4 (de) * 2005-06-20 2008-04-30 Siemens Ag Kontaktsystem, insbesondere für ein Schaltgerät
ITBG20060054A1 (it) * 2006-10-13 2008-04-14 Abb Service Srl Dispositivo di bassa tensione con equipaggio mobile rinforzato
WO2009035638A1 (fr) * 2007-09-11 2009-03-19 Siemens Energy & Automation, Inc. Système de déconnexion/contact à double coupure
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
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
DE102009052965B3 (de) 2009-11-12 2011-07-21 Eaton Industries GmbH, 53115 Rotativer Doppelkontakt

Citations (5)

* 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
WO1999062092A1 (fr) * 1998-05-29 1999-12-02 General Electric Company Dispositif a contact tournant pour disjoncteur a fort amperage
EP0978858A2 (fr) * 1998-08-04 2000-02-09 Hitachi, Ltd. Disjoncteur
JP2000113798A (ja) * 1998-08-06 2000-04-21 Mitsubishi Electric Corp 回路遮断器

Patent Citations (5)

* 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
WO1999062092A1 (fr) * 1998-05-29 1999-12-02 General Electric Company Dispositif a contact tournant pour disjoncteur a fort amperage
EP0978858A2 (fr) * 1998-08-04 2000-02-09 Hitachi, Ltd. Disjoncteur
JP2000113798A (ja) * 1998-08-06 2000-04-21 Mitsubishi Electric Corp 回路遮断器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN Bd. 2000, Nr. 07, 29. September 2000 (2000-09-29) & JP 2000 113798 A (MITSUBISHI ELECTRIC CORP), 21. April 2000 (2000-04-21) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8071898B2 (en) 2007-08-21 2011-12-06 Siemens Aktiengesellschaft Switching device with a switching shaft for mounting a rotary contact link and multipole switching device arrangement
DE102009035344A1 (de) 2009-07-23 2011-01-27 Siemens Aktiengesellschaft Leistungsschalter, insbesondere für Niederspannungen

Also Published As

Publication number Publication date
EP1302960B1 (fr) 2015-02-25
EP1302960A3 (fr) 2005-03-16
DE10150550C1 (de) 2002-12-19

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