EP0323404A1 - Système de déclenchement dans un disjoncteur d'installation de montage - Google Patents

Système de déclenchement dans un disjoncteur d'installation de montage Download PDF

Info

Publication number
EP0323404A1
EP0323404A1 EP88810876A EP88810876A EP0323404A1 EP 0323404 A1 EP0323404 A1 EP 0323404A1 EP 88810876 A EP88810876 A EP 88810876A EP 88810876 A EP88810876 A EP 88810876A EP 0323404 A1 EP0323404 A1 EP 0323404A1
Authority
EP
European Patent Office
Prior art keywords
contact
switch
contact part
armature
movable contact
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
EP88810876A
Other languages
German (de)
English (en)
Other versions
EP0323404B1 (fr
Inventor
Jörg Stamm
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.)
Cessione abb Patent GmbH
Original Assignee
CARL MAIER and CIE AG
CMC Carl Maier and Cie AG
ABB Patent 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4287385&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0323404(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by CARL MAIER and CIE AG, CMC Carl Maier and Cie AG, ABB Patent GmbH filed Critical CARL MAIER and CIE AG
Priority to AT88810876T priority Critical patent/ATE74463T1/de
Publication of EP0323404A1 publication Critical patent/EP0323404A1/fr
Application granted granted Critical
Publication of EP0323404B1 publication Critical patent/EP0323404B1/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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2418—Electromagnetic mechanisms combined with an electrodynamic current limiting mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
    • 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

Definitions

  • the invention relates to a shutdown or tripping system in an overcurrent installation built-in switch up to 25 A of electrical low-voltage distribution networks, which system has a thermal release with a bimetal strip, an electromagnetic release from a yoke, a core, a coil, a coil body, a displaceable armature and a striker pin actuated by the armature, a contact system arranged in a switching chamber with two fixed and a movable contact part with contact plates, and a manually operated switching lever mechanically engaged with the contact system via a switch lock.
  • the invention further relates to the use of the trigger system.
  • the built-in installation switches are self-locking, no pre-fuses are necessary.
  • the internal resistance which is essentially formed by thermal and electromagnetic tripping elements, limits the short-circuit current to a value which cannot cause any damage to the switch.
  • Motor protection switches are intrinsically fixed in tripping ranges up to 6 A. In the case of currents above 6 A, either a back-up fuse or a series block, also known as an I s limiter, must be connected upstream to take over the protective function.
  • the protective elements of standard switches in the switch group considered here protect up to 25 A nominal current.
  • Fig. 1 two basic schemes for the construction of known motor protection switches are shown.
  • the input terminal 10 is a backup fuse or a current upstream limiter 12 of known type, which is / is designed for areas above 6 A.
  • the contact system 14 shown in the open position after the input terminal 10 works with a single interruption and an impact anchor 62 (right) or a double interruption without an impact anchor (left).
  • the contact system is actuated by a thermal or an electromagnetic overcurrent release.
  • the electrical current exits the switch via the output terminal 20.
  • a motor protection switch suitable for high currents which has movable switching contacts by means of a switching arm and is equipped with means for actuating the switching arm to open or close the switching contacts.
  • These means comprise an electromagnetic actuation device which can be switched into a tripping state.
  • the means comprise a measuring device which senses the current and which generates an output signal proportional to the measured current strength, and a control device for switching off which responds to this output signal.
  • the means comprise a magnetic residual current release device. This motor protection switch requires a slot motor to generate a stronger electromagnetic field, which acts on the moving contact.
  • the motor protection switch according to FR, A, 2331908 is large, expensive in terms of assembly and material and has a large opening distance for the movable contact.
  • the inventors have set themselves the task of creating a triggering system of the type mentioned at the outset, which is inherently fixed and thus does not require a backup fuse or a control block, but on the other hand does not require a slot motor with iron parts which reinforce the electromagnetic field.
  • the tripping system is intended in particular for motor protection and miniature circuit breakers compact design and pleasing design.
  • the object is achieved in that a movable contact which can be dynamically actuated above a certain current intensity by the electromagnetic field without amplifying aids is installed in the contact system with double interruption arranged in the switching chamber.
  • ballast block with the dynamic contact for current limitation in the contact system is integrated in the switching chamber. It is not necessary to provide a slit motor or the like as the electromagnetic field amplifying drive.
  • the movable contact preferably has a very small mass and is therefore opened extremely quickly in the event of a short circuit; a shutdown process takes about 1.5 ms.
  • the switch is therefore intrinsically fixed up to at least 16 A, preferably up to 25 A.
  • the current is interrupted above a current that depends on the switch type, for example at 1250 A.
  • the dynamic opening of the moving contact is followed by the impact pin accelerated by the impact anchor.
  • the impact anchor as part of the electromagnetic release now releases the switch lock for release via a mechanism of known design; a contact carrier goes into the switch-off position and thereby prevents the moving contacts from closing again.
  • the hammer and hammer are in the activated position.
  • the fixed contact part preferably consists of two brackets which are plane-symmetrical with respect to the displacement axis of the armature, each with a contact plate.
  • the movable contact part consists of a switching bridge with contact plates arranged symmetrically on both sides with respect to the aforementioned axis.
  • the lower leg of the fixed contact parts is designed as a guide plate for the arc to one of the quenching packages arranged on both sides.
  • the movable contact part is preferably in contact with the lower arc guide plate for the quenching packages arranged on both sides.
  • the striking pin which runs coaxially to the armature or core, is guided at one end in an opening in the yoke and at the other end in the contact carrier.
  • the striker is electrically insulating, has a small inertia and slides easily and without lubrication.
  • the tripping system according to the invention is preferably used in a motor protection switch or circuit breaker, in particular in a three-pole motor protection switch with a common switch lock and switch lever.
  • the switch lock 76 actuated by the switching lever 26 and the parts transmitting the force from the thermal and electromagnetic overcurrent release to the switch lock are only indicated or omitted.
  • the housing 24 is only drawn as far as is necessary to represent the overcurrent release system. Only indicated or omitted parts are of conventional design and not characteristic of the invention.
  • an electrical conductor (not shown) is pressed with a screw 28 onto a connecting rail 30, which leads along the housing base into the interior of the switching chamber 32.
  • the connecting rail 30 is connected in an electrically conductive manner to the fixed contact 36 which is designed in the form of a bracket.
  • the lower part of the fixed contact 36 is also fixed in the housing base and, opening outwards in a curved line, is designed as an upper guide plate for the arc.
  • Each of the two symmetrically designed and arranged fixed contacts 36 has a contact plate 40 on the lower side.
  • the movable contact part 42 designed as a contact bridge, also has two contact plates 44 which, in the closed position shown in FIG. 4, lie on the contact plates 40 of the fixed contact part 36.
  • the two quenching plate packages 52 which contain a certain number of quenching plates 54, a high arc voltage and arc division is achieved, which is a prerequisite for the switch-off process.
  • a lower guide plate 50 which is curved for the arc and which, like the upper guide plate 38, opens outwards.
  • the movable contact part 42 is molded onto the lower guide plate 50 in the switched-off position.
  • the fixed contact parts 36 are expediently made of plated copper-steel strip to achieve a magnetic field for arc deflection
  • the movable contact parts 42 are made of copper
  • the lower guide plate 50 and the quenching plates 54 of the quenching package 52 are made of steel
  • the contact plates 40, 44 are made of a silver alloy.
  • the fixed contact part 36 located at the output terminal 20 is connected to the yoke 72 by means of a screw.
  • a bimetal 16 for thermal triggering is attached to a bending tab formed on the yoke 72 by spot welding. Its upper tongue 17 engages in a release system - in the present case with a displaceable slide 56 - which triggers the switch lock 76 in the event of overcurrent using means not shown.
  • a heating winding 58 is welded on, which serves for the additional heating of the bimetal strip 16.
  • the heating winding 58 is connected to the coil 60 of the electromagnetic release, which in the longitudinal center of the Motor protection switch is installed.
  • the armature 62 which is displaceable along the longitudinal axis A of the electromagnetic overcurrent release, is inserted into the coil body 64 according to FIG. 3.
  • the striker pin 66 is in the non-active state, in the switched-on position of the contact system, loosely between the armature 62 and the movable contact part 42.
  • This movable contact lies on a contact carrier 70, which is connected via two molded plungers 78 and an angle lever 77 from the key switch 76 to the on - or switched off position, with the help of a spiral spring 68.
  • the striker pin 66 which is preferably made of a plastic, in particular a thermoplastic, is displaceable along the longitudinal axis A; it penetrates through the sleeve-shaped core 67 and is guided in the housing base 74 on the one hand and in an opening in the contact carrier 70 for the movable contact part 42 on the other hand, the plastic housing base 74 and contact carrier 70 forming slide bearings.
  • the switching lock has been tensioned by actuating the switching lever 26.
  • the released impact armature 62 is held in the rest position in the axial direction A by means of a spring 75, which prevents the armature from tightening at the normal rated current.
  • the compression spring 68 has moved the movable contact part 42 with the contact carrier 70, the contact plates 40, 44 lie on one another in an electrically conductive manner.
  • the switching chambers 32 with contact system shown in FIGS. 3 and 4 and the thermal and electromagnetic trigger element with the connection terminals are arranged three times in parallel next to one another.
  • the three movable contacts 42 are stored in a common contact carrier 70 and are operated by this.
  • the contact carrier 70 is driven from the key switch 76 via the angle lever 77.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Jib Cranes (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
EP88810876A 1987-12-25 1988-12-19 Système de déclenchement dans un disjoncteur d'installation de montage Expired - Lifetime EP0323404B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88810876T ATE74463T1 (de) 1987-12-25 1988-12-19 Ausloesesystem in einem installationseinbauschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5067/87 1987-12-25
CH506787 1987-12-25

Publications (2)

Publication Number Publication Date
EP0323404A1 true EP0323404A1 (fr) 1989-07-05
EP0323404B1 EP0323404B1 (fr) 1992-04-01

Family

ID=4287385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88810876A Expired - Lifetime EP0323404B1 (fr) 1987-12-25 1988-12-19 Système de déclenchement dans un disjoncteur d'installation de montage

Country Status (3)

Country Link
EP (1) EP0323404B1 (fr)
AT (1) ATE74463T1 (fr)
DE (1) DE3869757D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991002370A2 (fr) * 1989-07-28 1991-02-21 Federal Pioneer Limited Disjoncteurs miniatures
DE19803922A1 (de) * 1998-02-02 1999-08-05 Maier & Cie C Kontaktanordnung für einen Installationseinbauschalter
DE19803925A1 (de) * 1998-02-02 1999-08-05 Maier & Cie C Installationsschalter
FR2794282A1 (fr) * 1999-05-25 2000-12-01 Fuji Electric Co Ltd Disjoncteur a dispositif de declenchement en cas de surintensite
CN105340041A (zh) * 2013-09-13 2016-02-17 西门子公司 在短路情况下具有改善的触发机械机构的开关装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19540972B4 (de) * 1995-11-03 2005-05-04 Moeller Gmbh Strombegrenzendes Kontaktsystem mit Doppeltunterbrechung für Niederspannungs-Schutzschalter
EP2416340A1 (fr) 2010-08-02 2012-02-08 Eaton Industries GmbH Dispositif de commutation doté d'un élément géométrique pour l'impact du mouvement de l'élément de contact mobile

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013984A (en) * 1975-08-22 1977-03-22 Westinghouse Electric Corporation Current limiting circuit breaker
FR2331908A1 (fr) * 1975-11-11 1977-06-10 Westinghouse Electric Corp Dispositif de commande de moteur integral
US4042895A (en) * 1975-09-16 1977-08-16 Westinghouse Electric Corporation Combination motor-starter and circuit breaker
FR2446538A1 (fr) * 1979-01-11 1980-08-08 Merlin Gerin Disjoncteur limiteur basse tension a declencheur electromagnetique perfectionne

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013984A (en) * 1975-08-22 1977-03-22 Westinghouse Electric Corporation Current limiting circuit breaker
US4042895A (en) * 1975-09-16 1977-08-16 Westinghouse Electric Corporation Combination motor-starter and circuit breaker
FR2331908A1 (fr) * 1975-11-11 1977-06-10 Westinghouse Electric Corp Dispositif de commande de moteur integral
FR2446538A1 (fr) * 1979-01-11 1980-08-08 Merlin Gerin Disjoncteur limiteur basse tension a declencheur electromagnetique perfectionne

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991002370A2 (fr) * 1989-07-28 1991-02-21 Federal Pioneer Limited Disjoncteurs miniatures
WO1991002370A3 (fr) * 1989-07-28 1991-06-27 Federal Pioneer Ltd Disjoncteurs miniatures
DE19803922A1 (de) * 1998-02-02 1999-08-05 Maier & Cie C Kontaktanordnung für einen Installationseinbauschalter
DE19803925A1 (de) * 1998-02-02 1999-08-05 Maier & Cie C Installationsschalter
FR2794282A1 (fr) * 1999-05-25 2000-12-01 Fuji Electric Co Ltd Disjoncteur a dispositif de declenchement en cas de surintensite
CN105340041A (zh) * 2013-09-13 2016-02-17 西门子公司 在短路情况下具有改善的触发机械机构的开关装置
US9659726B2 (en) 2013-09-13 2017-05-23 Siemens Aktiengesellschaft Switching device with improved tripping action in the event of a short circuit
CN105340041B (zh) * 2013-09-13 2017-07-07 西门子公司 在短路情况下具有改善的触发机械机构的开关装置

Also Published As

Publication number Publication date
ATE74463T1 (de) 1992-04-15
DE3869757D1 (de) 1992-05-07
EP0323404B1 (fr) 1992-04-01

Similar Documents

Publication Publication Date Title
EP0042113B1 (fr) Interrupteur automatique
DE19602118C2 (de) Elektrisches Schaltgerät
DE3042324A1 (de) Leitungsschutzschalter
EP0037490A1 (fr) Dispositif de déclenchement d'un interrupteur automatique pour interrompre un circuit
WO2009114890A1 (fr) Module de déclenchement pour un appareil de commutation
DE3141958A1 (de) "elektromagnetisch betaetigbarer elektrischer schalter"
DE842082C (de) Elektrischer Kleinselbstschalter
EP0323404B1 (fr) Système de déclenchement dans un disjoncteur d'installation de montage
EP0849761B1 (fr) Déclencheur de surintensité et de courtcircuit pour un disjoncteur électrique
EP0350825A2 (fr) Appareil de commutation électrique
DE69206749T2 (de) Elektrischer Schützschalter mit Einfügung von zusätzlichen Windungen im Magnetauslöser
DE4110335A1 (de) Einrichtung zum kurzschlussschutz
EP0013320B1 (fr) Interrupteur de protection de ligne principale utilisé comme interrupteur de protection de groupe
EP0391086A1 (fr) Dispositeur de protection à courant excessif commandé par un bouton-poussoir
EP1101234B1 (fr) Systeme de protection contre les court-circuits
EP0028389B1 (fr) Disjoncteur de protection à basse tension
DE2854623A1 (de) Anordnung zur selektiven abschaltung mehrerer verbraucher
EP0691665A1 (fr) Coupe-circuit automatique principal
DE3023512C2 (de) Elektrisches Installationsgerät, insbesondere Selbstschalter
DE2610951C3 (de) Schutzschalter
DE2138438A1 (de) U-foermiger eisenrueckschluss, der eine magnetische ausloesespule fuer leitungsschutzschalter umgibt
WO1994022197A1 (fr) Agencement de deconnexion de derivations d'un reseau basse tension en cas de court-circuit
EP1096529B1 (fr) Disjoncteur de protection électrique
EP0990247B1 (fr) Dispositif d'enclenchement d'un discontacteur
EP0041049A2 (fr) Disjoncteur de protection

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19891229

17Q First examination report despatched

Effective date: 19910524

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

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

Ref country code: SE

Effective date: 19920401

Ref country code: NL

Effective date: 19920401

Ref country code: BE

Effective date: 19920401

REF Corresponds to:

Ref document number: 74463

Country of ref document: AT

Date of ref document: 19920415

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3869757

Country of ref document: DE

Date of ref document: 19920507

ITF It: translation for a ep patent filed

Owner name: DE DOMINICIS & MAYER S.R.L.

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

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: 19920702

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19921219

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: KLOECKNER - MOELLER ELEKTRIZITAETS GMBH

Effective date: 19921218

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: ABB PATENT GMBH

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: ABB PATENT GMBH

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

ITPR It: changes in ownership of a european patent

Owner name: CESSIONE;ABB PATENT GMBH

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

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

Ref country code: DE

Payment date: 19990820

Year of fee payment: 12

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

Ref country code: FR

Payment date: 19990823

Year of fee payment: 12

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

Ref country code: CH

Payment date: 19990824

Year of fee payment: 12

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

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

Ref country code: GB

Payment date: 19990919

Year of fee payment: 12

R26 Opposition filed (corrected)

Opponent name: MOELLER GMBH

Effective date: 19921218

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

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

Free format text: STATUS: PATENT REVOKED

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

27W Patent revoked

Effective date: 20000728

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state

Free format text: 20000728

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO