EP0335774A1 - Auslösemagnet für einen Leistungsschalter - Google Patents

Auslösemagnet für einen Leistungsschalter Download PDF

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Publication number
EP0335774A1
EP0335774A1 EP89400804A EP89400804A EP0335774A1 EP 0335774 A1 EP0335774 A1 EP 0335774A1 EP 89400804 A EP89400804 A EP 89400804A EP 89400804 A EP89400804 A EP 89400804A EP 0335774 A1 EP0335774 A1 EP 0335774A1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
trip device
fixed
induction coil
magnetic trip
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
EP89400804A
Other languages
English (en)
French (fr)
Other versions
EP0335774B1 (de
Inventor
Jean-Marie Roiatti
Francis Deckert
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.)
Hager Electro SAS
Original Assignee
Hager Electro SAS
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 Hager Electro SAS filed Critical Hager Electro SAS
Priority to AT89400804T priority Critical patent/ATE99831T1/de
Publication of EP0335774A1 publication Critical patent/EP0335774A1/de
Application granted granted Critical
Publication of EP0335774B1 publication Critical patent/EP0335774B1/de
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
    • 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
    • H01H71/2481—Electromagnetic mechanisms characterised by the coil design
    • 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
    • H01H71/08—Terminals; Connections
    • 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
    • H01H73/18—Means for extinguishing or suppressing arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5855—Electric connections to or between contacts; Terminals characterised by the use of a wire clamping screw or nut
    • H01H2001/5861—Box connector with a collar or lug for clamping internal rail and external conductor together by a tightening screw
    • 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
    • H01H2071/249—Electromagnetic mechanisms with part of the magnetic circuit being in the normal current path in the circuit breaker, e.g. yoke, fixed contact and arc-runner are made out of one single conductive element
    • 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
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures

Definitions

  • the present invention relates to a magnetic trip device for a circuit breaker.
  • the circuit breaker devices are generally placed in modular housings and comprise a more or less complex mechanism for opening contacts, by an electromagnetic device comprising a coil sensitive to overcurrents and a plunger core, made of magnetic material such as mild steel, moved in in case of occurrence of overcurrent, this core being provided with a striker acting on the mechanism to cause the opening and rapid separation of the contacts.
  • the invention aims to remedy these problems by proposing a device which makes it possible to obtain, whatever the size of the winding, very high precision in the production of the different types of magnetic trip devices, that is to say in the respective arrangement of the elements which compose them, and in the relative position of these magnetic trip units in the housings.
  • Another objective of the invention is to provide a magnetic trip unit with a small footprint and which consists of a reduced number of parts.
  • Another object of the invention is to provide a pre-assembled and rigid magnetic trip device which can be placed in one piece in a circuit breaker box.
  • Yet another objective of the invention is to provide a magnetic trip device, the assembly and installation of which in a circuit breaker box can be fully automated.
  • the present invention relates to a magnetic trip device for circuit breaker, comprising a cylinder head, an induction coil associated with a plunger core with a striker and a return spring, a fixed contact, a switching electrode intended for guiding the arc towards a stack of arc extinguishing sheets, characterized in that the cylinder head is formed by cutting and bending a metal strip so as to integrate a connection terminal and to allow the induction coil to be fixed in place by welding from one of its two ends to the cylinder head, the other end being welded to the fixed contact which is carried by the cylinder head, but insulated from the latter, and which is arranged so as to produce the switching electrode.
  • the switching electrode is produced by cutting a tab in the strip forming the yoke. This this arrangement makes it possible to make the magnetic trip device even more compact and therefore to save space in the circuit breaker box.
  • the fixed contact is fixed frontally to the cylinder head with the interposition of a piece of insulating material.
  • This insulating part preferably has a front insulating part and an insulating sheath surrounding a fixed core and guiding the movable core.
  • this insulating part can be produced by a front insulating part situated against the front face of the cylinder head and an insulating washer, the guide of the plunger core is effecting through the insulated inner surface of the winding.
  • the fixed contact is crimped, with a fixed core, on the front face of the cylinder head and insulated from it.
  • the cylinder head is preferably closed so as to produce a flow channeling cage.
  • FIGS. 1 to 3 show an embodiment of the invention in which the cylinder head 1 is closed in order to produce a flow channeling cage.
  • the cylinder head comes from a folded and cut metal strip, as can be seen in FIG. 2.
  • This cylinder head (see FIG. 1) is intended to receive at one of its ends, which constitutes the connection terminal 2, a clamping cage 3 for the connection of a supply conductor not shown and at its other end, hereinafter called the front face 4, the fixed contact 5 of the trip device.
  • This cylinder head also houses, in its part closed in a cage, the electromagnetic tripping assembly, namely an induction coil 6 with circular section associated with a plunger core 7 with a striker 8, said plunger core 7 being returned to the position of rest by an elastic return member, in this case a spring 9, the plunger core 7 being guided in its movement in a tubular sheath 10 made of insulating material, and the striker 8 being guided in a fixed core 11 isolated from the cylinder head 1 and of the winding 6 by a front insulating part 18 and by the insulating sheath 10.
  • the electromagnetic tripping assembly namely an induction coil 6 with circular section associated with a plunger core 7 with a striker 8
  • the plunger core 7 being returned to the position of rest by an elastic return member, in this case a spring 9
  • the plunger core 7 being guided in its movement in a tubular sheath 10 made of insulating material
  • the striker 8 being guided in a fixed core 11 isolated from the cylinder head 1 and of the wind
  • the cylinder head 1 is formed from the cut and bent metal strip, having a part forming the connection terminal 2.
  • a straight branch 12 which becomes, after a second 90 ° bend, an arm of the cage hereinafter called base 13.
  • This base has a narrower portion 13 a , located immediately after the above 90 ° bend and coming from the cutting of a peripheral zone of said base 13.
  • the base 13 is continues by the front face 4 which forms one of the sides of the cage and which continues, after a 90 ° bend, by the second arm 14 of the cage which extends over the entire length of the base 13 not reduced by width by the above cutting.
  • This arm 14 continues itself, after a new 90 ° bend, by the second flank 15 of the cage and comes into contact with the base 13, at the part reduced in width of said base 13.
  • the front face 4 is pierced with an orifice 16 intended to receive the front insulating part 18 and the fixed core 11.
  • the sidewall 15 is also pierced with an orifice 17 aligned with the previous one and intended to receive the insulating sheath 10 and the plunger 7.
  • the triggering assembly namely induction coil 6, plunger core 7, striker 8, spring 9 and fixed core 11, and the insulating sheath 10 placed between the induction coil and the other aforementioned parts, is placed in the cylinder head 1; the fixed contact 5 is brought into contact with the part of the fixed core 11 protruding through the orifice 16 and of the front insulating part 18, then the fixed core 11 is crimped on the front face at the same time fixing the fixed contact 5.
  • L insulation is provided by the insulating sheath 10 and the front insulating part 18, and therefore isolates the plunger core 7 and the fixed core 11 relative to the induction coil 6 and to the cylinder head 1, as well as the fixed contact 5 relative to at the cylinder head 1.
  • one end of the induction coil 6 is welded to the base 13, a suitable cutout of the sidewall 15 allowing the passage of this end for soldering on the base 13.
  • the other end of the induction coil 6 is soldered directly to the fixed contact 5 thanks to an appropriate cutting of the front 4.
  • the fixed contact 5 is extended by a switching electrode 19 intended for guiding the arc towards a stack of arc extinguishing sheets, not shown.
  • the switching electrode can be produced by cutting out a suitable tab in the base 13, as will be described later in another embodiment of the invention.
  • the magnetic trigger thus described corresponds to a preferred embodiment. It can be easily and very precisely arranged in a modular housing, whatever the type of induction winding.
  • Figures 4 to 6 show another embodiment of the invention in which the induction winding is of large diameter. In this case, it is not necessary to make a flow channeling cage. On the other hand, the winding has a square section. For this reason, the embodiment shown does not provide an insulating sheath as previously but simply an insulating washer 10a to isolate the front face of the fixed core from the front face 4 of the frame.
  • the movable core 7, carrying its striker, is guided by the interior, substantially cylindrical surface of the winding 20 and is electrically isolated by the insulating varnish covering the conductor, the winding of which forms the winding.
  • the cylinder head 1 then has the connection terminal 2, the straight branch 12, a base 21 of constant width and the front face 4 with its orifice 16.
  • the fixed core 11 is, as in the previous embodiment, crimped with the fixed contact 5 and the front insulating part 18.
  • One end of the induction coil 20 is welded to the base 21, which stiffens the assembly, the other end being welded to the fixed contact 5 in the same way than in the previous embodiment.
  • the switching electrode is formed by a tab 22 cut out in the base 21, the uncut part being situated on the side of the front face 4. This arrangement makes it possible to channel the arc towards the stack of arc extinguishing sheets not shown.
  • the switching electrode could also be formed by an extension of the fixed contact 5.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP89400804A 1988-03-30 1989-03-22 Auslösemagnet für einen Leistungsschalter Expired - Lifetime EP0335774B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89400804T ATE99831T1 (de) 1988-03-30 1989-03-22 Ausloesemagnet fuer einen leistungsschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8804170 1988-03-30
FR8804170A FR2629633A1 (fr) 1988-03-30 1988-03-30 Declencheur magnetique pour disjoncteur

Publications (2)

Publication Number Publication Date
EP0335774A1 true EP0335774A1 (de) 1989-10-04
EP0335774B1 EP0335774B1 (de) 1994-01-05

Family

ID=9364786

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89400804A Expired - Lifetime EP0335774B1 (de) 1988-03-30 1989-03-22 Auslösemagnet für einen Leistungsschalter

Country Status (4)

Country Link
EP (1) EP0335774B1 (de)
AT (1) ATE99831T1 (de)
DE (1) DE68911970T2 (de)
FR (1) FR2629633A1 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0537090A1 (de) * 1991-10-10 1993-04-14 Schneider Electric Sa Elektrischer Schützschalter mit Einfügung von zusätzlichen Windungen im Magnetauslöser
EP0569652A1 (de) * 1992-05-13 1993-11-18 Hager Electro S.A. Magnetauslöser für Schutzschalter, entsprechende Baugruppe und diese enthaltende Schutzschalter
DE4309197A1 (de) * 1993-03-22 1994-09-29 Maier & Cie C Leitungsschutzschalter
FR2753836A1 (fr) * 1996-09-23 1998-03-27 Schneider Electric Sa Declencheur electromagnetique pour appareil electrique de protection
DE29802348U1 (de) * 1998-02-11 1998-04-23 Siemens Ag Elektromagnetischer Stromauslöser für einen elektrischen Schutzschalter
WO1999063564A1 (fr) * 1998-06-03 1999-12-09 Hager Electro Sous-ensemble magnetique optimise
WO2000021109A1 (de) * 1998-10-02 2000-04-13 Aeg Niederspannungstechnik Gmbh & Co. Kg Magnetsystem
EP1463082A1 (de) * 2003-03-26 2004-09-29 Siemens Aktiengesellschaft Elektromagnetisches Schaltgerät
CN102113079A (zh) * 2008-07-31 2011-06-29 伊顿有限公司 开关器件
CN107610987A (zh) * 2017-09-22 2018-01-19 嘉兴市加控电气设备制造有限公司 一种小型断路器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007014174B4 (de) * 2007-03-24 2021-05-12 Johnson Electric Germany GmbH & Co. KG Elektrischer Schalter
DE102012111618A1 (de) * 2012-11-29 2014-06-18 Eaton Industries (Austria) Gmbh Leitungsschutzschalter mit passiv beheiztem Bimetall-Element
DE102016110094B4 (de) * 2016-06-01 2021-03-04 Abb Schweiz Ag Installationsschaltgerät mit einem elektromagnetischen Auslöser

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000379A (en) * 1977-06-27 1979-01-04 Weber Ag Fab Elektro Magnetic trip mechanism for automatic cut-out
EP0008558A1 (de) * 1978-08-25 1980-03-05 Legrand Selbstschalter mit beweglichem, auf einem beweglichen Rastelement schwenkbar gelagertem, Kontakthebel
EP0027404A1 (de) * 1979-10-16 1981-04-22 Merlin Gerin Elektrischer Miniaturschutzschalter mit gegossenem Gehäuse
DE3333792A1 (de) * 1982-11-11 1984-05-17 Kombinat Veb Keramische Werke Hermsdorf, Ddr 6530 Hermsdorf Leitungsschutzschalter mit einer eine blasschleife bildenden kontaktanordnung
DE8527361U1 (de) * 1985-09-25 1986-01-09 Lindner Gmbh, Fabrik Elektrischer Lampen Und Apparate, 8600 Bamberg Kurzschlußauslöseorgan
FR2580861A1 (fr) * 1985-04-20 1986-10-24 Licentia Gmbh Disjoncteur de protection de canalisations electriques
EP0243648A1 (de) * 1986-04-07 1987-11-04 Sprecher + Schuh AG Elektrischer Schutzschalter

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000379A (en) * 1977-06-27 1979-01-04 Weber Ag Fab Elektro Magnetic trip mechanism for automatic cut-out
EP0008558A1 (de) * 1978-08-25 1980-03-05 Legrand Selbstschalter mit beweglichem, auf einem beweglichen Rastelement schwenkbar gelagertem, Kontakthebel
EP0027404A1 (de) * 1979-10-16 1981-04-22 Merlin Gerin Elektrischer Miniaturschutzschalter mit gegossenem Gehäuse
DE3333792A1 (de) * 1982-11-11 1984-05-17 Kombinat Veb Keramische Werke Hermsdorf, Ddr 6530 Hermsdorf Leitungsschutzschalter mit einer eine blasschleife bildenden kontaktanordnung
FR2580861A1 (fr) * 1985-04-20 1986-10-24 Licentia Gmbh Disjoncteur de protection de canalisations electriques
DE8527361U1 (de) * 1985-09-25 1986-01-09 Lindner Gmbh, Fabrik Elektrischer Lampen Und Apparate, 8600 Bamberg Kurzschlußauslöseorgan
EP0243648A1 (de) * 1986-04-07 1987-11-04 Sprecher + Schuh AG Elektrischer Schutzschalter

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2682533A1 (fr) * 1991-10-10 1993-04-16 Merlin Gerin Disjoncteur electrique a insertion de spires du declencheur magnetique.
EP0537090A1 (de) * 1991-10-10 1993-04-14 Schneider Electric Sa Elektrischer Schützschalter mit Einfügung von zusätzlichen Windungen im Magnetauslöser
EP0569652A1 (de) * 1992-05-13 1993-11-18 Hager Electro S.A. Magnetauslöser für Schutzschalter, entsprechende Baugruppe und diese enthaltende Schutzschalter
DE4309197A1 (de) * 1993-03-22 1994-09-29 Maier & Cie C Leitungsschutzschalter
US5894257A (en) * 1996-09-23 1999-04-13 Schneider Electric Sa Electromagnetic trip for an electrical apparatus for protection
FR2753836A1 (fr) * 1996-09-23 1998-03-27 Schneider Electric Sa Declencheur electromagnetique pour appareil electrique de protection
EP0834895A1 (de) * 1996-09-23 1998-04-08 Schneider Electric Sa Elektromagnetischer Auslöser für elektrisches Schutzgerät
WO1999041760A1 (de) * 1998-02-11 1999-08-19 Siemens Aktiengesellschaft Elektromagnetischer stromauslöser für einen elektrischen schutzschalter
DE29802348U1 (de) * 1998-02-11 1998-04-23 Siemens Ag Elektromagnetischer Stromauslöser für einen elektrischen Schutzschalter
WO1999063564A1 (fr) * 1998-06-03 1999-12-09 Hager Electro Sous-ensemble magnetique optimise
FR2779567A1 (fr) * 1998-06-03 1999-12-10 Hager Electro Sous-ensemble magnetique optimise
WO2000021109A1 (de) * 1998-10-02 2000-04-13 Aeg Niederspannungstechnik Gmbh & Co. Kg Magnetsystem
EP1463082A1 (de) * 2003-03-26 2004-09-29 Siemens Aktiengesellschaft Elektromagnetisches Schaltgerät
CN102113079A (zh) * 2008-07-31 2011-06-29 伊顿有限公司 开关器件
CN102113079B (zh) * 2008-07-31 2014-05-28 伊顿有限公司 开关器件
CN107610987A (zh) * 2017-09-22 2018-01-19 嘉兴市加控电气设备制造有限公司 一种小型断路器
CN107610987B (zh) * 2017-09-22 2020-04-24 嘉兴市加控电气设备制造有限公司 一种小型断路器

Also Published As

Publication number Publication date
ATE99831T1 (de) 1994-01-15
DE68911970D1 (de) 1994-02-17
DE68911970T2 (de) 1994-07-14
EP0335774B1 (de) 1994-01-05
FR2629633A1 (fr) 1989-10-06

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