EP1334504B1 - Systeme de contact pour disjoncteurs limiteurs de courant - Google Patents

Systeme de contact pour disjoncteurs limiteurs de courant Download PDF

Info

Publication number
EP1334504B1
EP1334504B1 EP01996877A EP01996877A EP1334504B1 EP 1334504 B1 EP1334504 B1 EP 1334504B1 EP 01996877 A EP01996877 A EP 01996877A EP 01996877 A EP01996877 A EP 01996877A EP 1334504 B1 EP1334504 B1 EP 1334504B1
Authority
EP
European Patent Office
Prior art keywords
contact
switching shaft
tension springs
contact link
contact bridge
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
EP01996877A
Other languages
German (de)
English (en)
Other versions
EP1334504A1 (fr
Inventor
Franz Böder
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
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
Publication of EP1334504A1 publication Critical patent/EP1334504A1/fr
Application granted granted Critical
Publication of EP1334504B1 publication Critical patent/EP1334504B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock

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 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 direction of each Pols is standing.
  • Each pole comprises two fixed terminals connected with connecting bars Contacts, a rotary contact bridge extending along the longitudinal axis of the pole in one playful recording of the switching shaft extends and opposite each other Contact pieces, which in closed position with the fixed contacts cooperate, and two mounted inside the shift shaft tension springs, the acting on the contact bridge and so a specified contact pressure of the contact pieces to ensure the fixed contacts, with one of the ends of each Tension spring cooperates with a driver element of the shift shaft.
  • the two Springs are mounted in the receptacle for the contact bridge, with the other end each spring is attached to a fastener of the contact bridge.
  • This arrangement ensures the springs a free displacement of the imaginary axis of rotation of the contact bridge with respect to the fixed transverse axis of the shift shaft and allows simultaneous a moment of force for uniform distribution of the contact pressure and an elastic Positioning of the contact bridge with two translatory degrees of freedom, wherein the contact bridge due to the self-centering effect of the springs on the Longitudinal axis is held in an equilibrium position.
  • connection rails with the fixed contacts are looped so that they, when they are traversed by a short-circuit current, the contact bridge against the force effect of the tension springs repelling in the direction of a repelling position, generate electrodynamic forces.
  • the risk of being spun by electrodynamic forces in the event of a short circuit movable contact bridge damages its stop or falls back too fast, resulting in unwanted reignition of arcing and / or Maisversch dipitch can lead.
  • 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 notch arranged the shift shaft, mounted as a transverse axis rod 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 rods interact to the movement of the Decelerate contact bridge.
  • the rods are limitedly displaceable in the notches stored, with the diametrically opposite notches approximately along the line of action of the associated springs.
  • the profile of the cams can be designed so that the contact bridge locked in the repulsion 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 rods 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.
  • a disadvantage of this contact arrangement are the additional Requirement of the movable bars to be stored and the insufficient braking effect at high repulsive forces due to the low friction surfaces and friction coefficients between the steel bars and the copper contact bridge.
  • the object of the invention is therefore in a simplified contact arrangement with improved braking behavior.
  • the contact force tension springs need for the repulsion movement of the contact bridge certain range of motion through the room for receiving the contact bridge is present in the switching shaft, this space on the one hand by the Contact bridge itself and the other by the play area of the opposite Inner walls of the switching shaft is limited.
  • This room is designed that both in the closed position and in the open position of the contact bridge there is sufficient play for the springs.
  • Electrodynamic repulsion the contact bridge move the springs initially up to a certain Position with the freedom of movement allowed by this game.
  • the springs by a certain shape the inner walls of the selector shaft restricted in their movement and in their Speed controlled.
  • An advantageous development of the invention is that the shape of the Interior walls is chosen so that it again in the course of the repulsion movement comes to a sufficient game between the movement partners and the Feathers can relax slightly. Lingering the contact bridge with the tension springs in this wider play area will after the pulse conversion and thus overcoming the reversal of motion again and leads to a delayed falling back the contact bridge. Equipped with such contact arrangements Circuit breakers are advantageously suitable for selective switch arrangements.
  • U-shaped Doppelzugfedem with a transverse intermediate piece can be easily attached to the contact bridge. To guarantee safe movements of the contact bridge this is provided with a slot, by the one in the transverse axis of the shift shaft extending fixed bearing axis is guided. Due to the polweise composition of the switching shafts Polweise associated switching shaft segments is the contact arrangement for modular Compatible circuit breaker suitable.
  • the contact arrangement 2 is for a pole of a not shown multi-pole circuit breaker provided.
  • the circuit breaker includes in the usual way a Isolierstoffgeophuse, a actuatable 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 (Fig. 3 and 4) rotatably mounted a switching shaft 6, wherein the transverse axis 4 is vertical to the longitudinal direction 8 ( Figure 3) of the pole.
  • the switching shaft 6 is assigned from polweise Heidelbergmaschineensegmenten assembled.
  • a rotary contact bridge 10 extends along the longitudinal direction 8 of the pole in a play-loaded receptacle 12 of the switching shaft 6 and has opposing contact pieces 14th on, which cooperate in closed position with fixed contacts 16.
  • the Contact bridge 10 has a slot 11, with which they are fixed to a, in the transverse axis 4 of the switching shaft 6 extending bearing axis 7 is mounted.
  • In the Receiving 12 are arranged on each side of the contact bridge 10 two tension springs 18, which the required contact force between the contact pieces 14 and apply the fixed contacts 16.
  • the tension springs 18 have at the Contact bridge 10 mounted first end 20 and a mounted on the switching shaft 6 second end 22 on.
  • the tension springs 18 on each side of the contact bridge10 stand the two first ends 20 with respect to the axis of rotation of Contact bridge 10 and the two second ends 22 with respect to the transverse axis. 4 the shift shaft 6 diametrically opposite.
  • the tension springs 18 are symmetrical with respect arranged on the contact bridge 10.
  • Two each on opposite sides of the Contact bridge 10 located first ends 20 are integrally across transverse Intermediate pieces 21 connected, and two each on opposite sides of the Contact bridge 10 located second ends 22 are in transverse steel pins 23rd mounted (Fig. 3).
  • the intermediate pieces 21 form with the associated tension springs 18th U-shaped double tension springs and are non-positively in first notches 25th the contact bridge 10 ( Figure 3).
  • the steel pins 23 are in corresponding second Notches 27 of the shift shaft 6. With each of the two fixed contacts 16 is a loop-shaped connecting rail 24 is connected. This loop shape causes that the flow of a short-circuit current, the contact bridge 10 against the Force action of the tension springs 18 from the closed position (FIG. 1) in the direction of a Repelling position (Fig. 2) is repelled by electrodynamic forces.
  • Both inner walls 26 in the receptacle 12 of the switching shaft 6 are in particular Way trained.
  • the game areas 28 are set back so far that the tension springs 18 in these areas with sufficient Store game in the recording 12.
  • Starting from the closed position go the Play areas 28 for the tension springs 18 in the direction of the repelling position of the contact bridge 10 in friction regions 30 via.
  • the friction regions 30 increasingly narrow the gap between the inner walls 26 and the contact bridge 10, when this in their Repelling position moves, so that the tension springs 18 press into this area have to.
  • the resulting friction destroys to the required extent the kinetic energy of high accelerated by the electrodynamic repulsion Contact bridge 10.
  • the switching shaft 6 is made of insulating plastic, the together with the steel material of the tension springs 18 an advantageous pairing with a having high coefficient of friction.
  • Tension spring 18 shown schematically.
  • the tension spring 18 first passes through the associated game area 28 extending over a first rotation angle range W1. Thereafter, the tension spring 18 passes over a second rotation angle range W2, where the game between inner wall 26 and tension spring 18 is reduced, in the associated Friction region 30, which extends over a third rotation angle range W3. After all the tension spring 18 passes over a fourth rotation angle range W4, where increasing again a game between the inner wall 26 and spring 18 is formed in an associated another game area 32, which extends over a fifth rotation angle range W5 extends.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Claims (5)

  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 de traction à force de contact (18) disposés à l'intérieur de l'arbre de transmission (6), qui présentent respectivement une première extrémité (20) disposée sur le contact à pont (10) et une deuxième extrémité (22) disposée sur l'arbre de transmission (6), dans lequel la première, respectivement la deuxième extrémité (20, respectivement 22) repose diamétralement en vis-à-vis par rapport à l'axe rotatif du contact à pont (10),respectivement l'axe transversal (4),
    deux barres de connexion (24) 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 de traction (18),
    dans lequel les ressorts de traction (18) sont disposés respectivement par paires symétriques par rapport à l'axe de rotation du contact à pont (10) ainsi que symétriquement des deux côtés du contact à pont (10),
    caractérisé en ce que chacune des deux parois internes (26) de l'arbre de transmission (6) disposée contre le contact à pont (10) est configurée de telle sorte qu'elle fait passer chacun des ressorts de traction (18) d'une zone de jeu (28) à une zone de friction (30) à partir de la position de branchement du contact à pont (10) dans la direction de la position de répulsion.
  2. Système de contact selon la revendication précédente, caractérisé en ce que chaque paroi interne (26) présente une autre zone de jeu (32) pour les ressorts de traction (18) peu avant la position de butée du contact à pont (10) en position de répulsion.
  3. Système de contact selon une des revendications précédentes, caractérisé en ce que respectivement deux premières extrémités (20) des ressorts de traction (18) reposant sur des côtés en vis-à-vis du contact à pont (10) sont reliées en un seul bloc par des adaptateurs (21) s'étendant transversalement.
  4. Système de contact selon une des revendications précédentes, caractérisé en ce que le contact à pont (10) est inséré par un alésage oblong (11) sur un axe de roulement (7) fixe, s'étendant dans l'axe transversal (4) de l'arbre de transmission (6).
  5. 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.
EP01996877A 2000-11-16 2001-11-02 Systeme de contact pour disjoncteurs limiteurs de courant Expired - Lifetime EP1334504B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10056818A DE10056818A1 (de) 2000-11-16 2000-11-16 Kontaktanordung für strombegrenzende Schutzschalter
DE10056818 2000-11-16
PCT/EP2001/012705 WO2002041347A1 (fr) 2000-11-16 2001-11-02 Systeme de contact pour disjoncteurs limiteurs de courant

Publications (2)

Publication Number Publication Date
EP1334504A1 EP1334504A1 (fr) 2003-08-13
EP1334504B1 true EP1334504B1 (fr) 2005-03-09

Family

ID=7663524

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01996877A Expired - Lifetime EP1334504B1 (fr) 2000-11-16 2001-11-02 Systeme de contact pour disjoncteurs limiteurs de courant

Country Status (3)

Country Link
EP (1) EP1334504B1 (fr)
DE (2) DE10056818A1 (fr)
WO (1) WO2002041347A1 (fr)

Families Citing this family (5)

* 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
DE102005028474B4 (de) * 2005-06-20 2008-04-30 Siemens Ag Kontaktsystem, insbesondere für ein Schaltgerät
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

Family Cites Families (3)

* 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
FR2648952B1 (fr) * 1989-06-26 1991-09-13 Merlin Gerin Disjoncteur limiteur equipe d'un dispositif retardateur de retombee de contact a effet electromagnetique
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.

Also Published As

Publication number Publication date
WO2002041347A1 (fr) 2002-05-23
DE10056818A1 (de) 2002-05-23
EP1334504A1 (fr) 2003-08-13
DE50105561D1 (de) 2005-04-14

Similar Documents

Publication Publication Date Title
DE69304374T2 (de) Schutzschalter mit Pressformgehäuse mit Verzögerung am Bewegungsende der Kontaktbrückenabstossung
DE4337344A1 (de) Strombegrenzendes Kontaktsystem für Leistungsschalter
DE3411276C2 (fr)
DE3119482A1 (de) "stromkreisunterbrecher"
DE60028448T2 (de) Strombegrenzender leistungsschalter mit hilfsenergiespeicher
EP1302960B1 (fr) Dispositif de contact pour disjoncteur limiteur de courant
DE102004051184A1 (de) Kontaktvorrichtung eines Schutzschalters vom Repulsionstyp
DE60218405T2 (de) Schaltmechanismus und damit versehener elektrischer Schalter
EP1334503B1 (fr) Systeme de contact pour disjoncteurs limiteurs de courant
DE3789738T2 (de) Ausschalter.
EP1334504B1 (fr) Systeme de contact pour disjoncteurs limiteurs de courant
DE10219022B3 (de) Kontaktanordnung für strombegrenzende Schutzschalter
DE10056820A1 (de) Kontaktanordnung für strombegrenzende Schutzschalter
DE3906786C2 (fr)
EP1261981B1 (fr) Pole de commutation pour appareils de commutation basse tension comportant un support de contacts a mouvement lineaire
DE69516790T2 (de) Mittelspannungsschalter oder Schutzschalter
EP0398461A2 (fr) Disjoncteur avec un dispositif de commande et de verrouillage pour un contact mobile
EP1513178A2 (fr) Dispositif de contact pour disjoncteur limiteur de courant
DE10056821A1 (de) Kontaktanordnung für strombegrenzende Schutzschalter
DE4326312A1 (de) Kippschalter mit Anschlag zur Geräuschdämpfung
DE19629867A1 (de) Strombegrenzender Leistungsschalter
DE3544864A1 (de) Elektrischer unterbrecher mit schutzwand
DE10252741B3 (de) Kontaktsystem für einen Niederspannungsschalter
DE102004038112B4 (de) Elektrisches Schaltgerät
DE112005003632B4 (de) Leistungsschalter

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20030530

AK Designated contracting states

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050309

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 50105561

Country of ref document: DE

Date of ref document: 20050414

Kind code of ref document: P

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20050309

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

ET Fr: translation filed
26N No opposition filed

Effective date: 20051212

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20151112

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20151027

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20161130

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161130

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161102

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50105561

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180602