EP0569652A1 - Magnetauslöser für Schutzschalter, entsprechende Baugruppe und diese enthaltende Schutzschalter - Google Patents

Magnetauslöser für Schutzschalter, entsprechende Baugruppe und diese enthaltende Schutzschalter Download PDF

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Publication number
EP0569652A1
EP0569652A1 EP92440058A EP92440058A EP0569652A1 EP 0569652 A1 EP0569652 A1 EP 0569652A1 EP 92440058 A EP92440058 A EP 92440058A EP 92440058 A EP92440058 A EP 92440058A EP 0569652 A1 EP0569652 A1 EP 0569652A1
Authority
EP
European Patent Office
Prior art keywords
magnetic trip
trip device
circuit breaker
fixed contact
coil
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.)
Withdrawn
Application number
EP92440058A
Other languages
English (en)
French (fr)
Inventor
Denis 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 EP92440058A priority Critical patent/EP0569652A1/de
Publication of EP0569652A1 publication Critical patent/EP0569652A1/de
Withdrawn legal-status Critical Current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
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures
    • 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
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor
    • 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
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
    • 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

Definitions

  • the present invention relates to a magnetic trip device for a circuit breaker, in particular for a phase and neutral circuit breaker, as well as to a magnetic sub-assembly incorporating it. It also relates to circuit breakers, in particular phase and neutral circuit breakers, in which such a trip device or such a sub-assembly is mounted.
  • Line protection circuit breakers generally include, in a modular box, a circuit extending between two terminals and comprising a thermal trip bimetal for protecting the line against overloads and, between a terminal and a fixed contact, a member electromagnetic tripping or magnetic trip device comprising a coil with a movable core associated with a striker to ensure, in the event of overcurrent, tripping by opening a movable contact cooperating with one or more fixed contacts.
  • the phase and neutral circuit breakers further include a neutral stage with fixed and movable contacts, the movable neutral contact being actuated in conjunction with the movable phase contact.
  • Magnetic trip units generally include an induction coil which is associated with a movable core with striker and return spring and which is mounted longitudinally in a cylinder head having a first and a second facing flank, the first flank being provided with a fixed core in which the striker is guided.
  • the induction coil was then connected by a first end to the cylinder head and had a second end connected to a terminal of the circuit breaker.
  • a piece of material good conductor of electricity, in particular copper to form the fixed contact.
  • the channeling to the arc breaking chambers of the electric arcs appearing during circuit breaks could be ensured in part by the part forming the fixed contact in connection with the cylinder head or by an appropriate extension of this part. forming a switching electrode.
  • the object of the invention is therefore to remedy these drawbacks by proposing magnetic triggers which are much easier to produce and which have greater precision in production both in the respective arrangement of the elements which compose them and in the relative position of these triggers. magnetic in the boxes, especially with regard to their fixing.
  • Another objective of the invention is to provide an inexpensive magnetic trigger, of small size 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.
  • the present invention therefore relates to a magnetic trip device of the type described at the start, characterized in that the cylinder head has a general U-shape with a longitudinal arm connecting the two sides opposite one another and in that it is formed by cutting and bending a metal strip so as to integrate the fixed contact and the switching electrode.
  • the fixed contact comes in the extension of said first flank, that is to say from the edge of this flank opposite the edge connected to the longitudinal arm, and has a width less than that of this flank.
  • the fixed contact comes substantially in the extension of a part located in a transverse half of the first flank.
  • the second end of the coil that is to say the one which is intended to be connected to the connection terminal of the circuit breaker, is located on the same side as the fixed contact.
  • the induction coil has at least one straight end, that is to say that it has not been folded after winding, which on the one hand reduces the manufacturing costs, but above all avoids the usual folding operations which are difficult to achieve with precision.
  • the realization with two straight ends is therefore preferred.
  • the first end of the coil is straight and is welded to a tab forming an extension of the first side, this tab being oriented parallel to said straight end.
  • This tab preferably comes from the cutting of the longitudinal arm of the cylinder head and it is located on the side opposite to the fixed contact.
  • the first end of the coil can be welded directly to the extension forming a fixed contact and switching electrode, as close as possible to the fixed contact, so as to limit the path of the coil current to the fixed contact.
  • the second end of the coil is welded to a conductive connecting piece which is both rigid and capable of coming into engagement rigidly with the connection terminal of the circuit breaker, so as to form an assembly which is also rigid.
  • the part of this connecting piece, intended to be welded to the second end of the coil is inclined to take account of the orientation of this end.
  • phase and neutral stages can be mounted on one side or the other of the housing to take account in particular of the standards in force in the different countries and it is therefore understood that it will be advantageous to produce two types of cylinder head, symmetrical to one another, with fixed contact and switching electrode to the right or to the left, a welding tab can be provided each time on the opposite side, which also requires a adaptation of the induction coil.
  • the invention also relates to magnetic sub-assemblies comprising, in the form of a pre-assembled and rigid entity, a magnetic trip device according to the invention with connection piece and connection terminal.
  • the invention finally relates to a circuit breaker comprising such a magnetic trip device or such a sub-assembly according to the invention.
  • Figures 1 and 2 are views in longitudinal section of a phase and neutral circuit breaker according to the invention, with neutral on the left, Figure 1 showing the phase stage and Figure 2, the neutral stage.
  • Figure 3 is an exterior view of the circuit breaker according to Figures 1 and 2, showing a small side of said device.
  • Figures 4 and 5 are views in longitudinal section of a phase and neutral circuit breaker according to the invention with neutral on the right, Figure 4 showing the neutral stage and Figure 5, the phase stage.
  • FIG. 6 is a view similar to FIG. 3, for the circuit breaker of FIGS. 4 and 5.
  • Figure 7 is a side view of the magnetic sub-assembly according to the invention.
  • FIG. 8 is a sectional view along the section plane IX-IX of FIG. 7.
  • Figures 9 and 10 are perspective views of the magnetic sub-assembly, in the case of a left-side neutral circuit breaker.
  • Figures 11 and 12 show a variant of the magnetic sub-assembly, profit and perspective view respectively, also for the version with neutral on the left.
  • the circuit breakers according to the invention are preferably modular devices, that is to say those whose width is equal to a multiple of a defined module. They usually include a housing having a base 1 provided with means 2 for fixing and / or clipping (with optionally retractable latch, not shown) on a support rail (not shown), and a top 3 having an opening 4 for the passage of the handle or actuating lever 5a of an operating member 5 constituting one of the elements of a lock mechanism.
  • the housing also usually has two short sides 6 and 7 having the electrical connection terminals and two large faces 8 and 9 called lateral faces, which are parallel to the median plane of the housing.
  • FIGS. 1 and 2 are partial left views of the interior of an apparatus according to the invention, and in FIG. 3, the right side of the sheet corresponds to the right side of the case, face 9.
  • Figures 1 and 2 show respectively the phase and neutral stages of the circuit breaker.
  • phase and neutral terminals are, as is customary, respectively shifted in height, for polarization purposes.
  • the circuit breaker further comprises the above-mentioned operating member 5 with its actuating lever 5a, intended to act, by means of a link 39, on the lock mechanism 40 which mainly comprises a movable contact carrier 41 with a toggle joint device, cooperating with the link 39 and with a pawl 42 secured to a triggering part 43, which is biased by the coil 33 and by the bimetallic strip 27, in the latter case via a driver 44.
  • the general arrangement of the phase and neutral stages is the same as above, if not their place on either side of the median plane of the housing, as can be seen in FIGS. 4 and 5.
  • the identical orientation of the different constituent elements in the plane of the housing will be noted, compared to the previous embodiment.
  • the left and right half-shells and the spacer are specific to the chosen configuration, neutral on the left or neutral on the right.
  • a right half-shell 10 ' is used for the neutral side, a spacer 12' and a left half-shell 11 '.
  • FIGS. 7 to 11 for the description of the preferred magnetic sub-assembly 31, designed so as to form a rigid assembly.
  • the magnetic sub-assembly 31 comprises the yoke 34 obtained from a single piece cut and folded to present two sides 80 and 81 parallel to each other and joined together by a longitudinal arm 82, inside a transverse half of the flank 81 extending to form the fixed contact 35 (with silver contact pad, welded), then, by a parallel part and opposite said arm 82, the switching electrode 37.
  • the magnetic part consists of the coil 33 obtained by simple winding, without subsequent folding of the protruding ends 83 and 84, a fixed core 85 engaged in an orifice 86 formed in the sidewall 81, an insulating sheath 87 extending from the fixed core projecting through an orifice 88, formed in the sidewall 80 and aligned with the previous one, as well as a core 89 movable in said insulating sheath 87, separated from the fixed core 85 by a compression spring (not shown) and intended for drive the striker 90 guided in said fixed core 85.
  • the fixed core 85, the insulating sheath 87, the movable core 89, the striker 90 and the spring form a pre-assembled sub-assembly, slid from the rear 80 and clipped at this location.
  • the coil type spring varies according to the curves associated with the different types of circuit breakers: when it comes to delaying the magnetic trip, we put a stronger spring etc ...
  • the end 83 is welded to a tab 91 coming in one piece with the flank 81, on the opposite side and in the same transverse half as the extension forming the fixed contact.
  • the other end 84 of the coil is welded to a conductive connecting piece 92 designed to fit on and block the corresponding connection terminal 32.
  • the part 92 has an inclined part to take account of the orientation of the end 84 in order to ensure satisfactory electrical and mechanical connection.
  • the rigid assembly thus formed is easy to set up precisely. For reasons of the internal geometry of the device housings, the fixed contact with the electrode, and the conductive part, with the terminal, are located on the same side of the magnetic sub-assembly.
  • the coil 33 could also have, instead of the end 83, an end 83 'folded so as to be directly welded to the extension forming the fixed contact, as close as possible to this, as well as possibly, in place of the end 84, one end folded towards the connection terminal (not shown).
  • the sub-assemblies 31 thus described correspond to a type of configuration, in this case with neutral on the left.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
EP92440058A 1992-05-13 1992-05-13 Magnetauslöser für Schutzschalter, entsprechende Baugruppe und diese enthaltende Schutzschalter Withdrawn EP0569652A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP92440058A EP0569652A1 (de) 1992-05-13 1992-05-13 Magnetauslöser für Schutzschalter, entsprechende Baugruppe und diese enthaltende Schutzschalter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92440058A EP0569652A1 (de) 1992-05-13 1992-05-13 Magnetauslöser für Schutzschalter, entsprechende Baugruppe und diese enthaltende Schutzschalter

Publications (1)

Publication Number Publication Date
EP0569652A1 true EP0569652A1 (de) 1993-11-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP92440058A Withdrawn EP0569652A1 (de) 1992-05-13 1992-05-13 Magnetauslöser für Schutzschalter, entsprechende Baugruppe und diese enthaltende Schutzschalter

Country Status (1)

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EP (1) EP0569652A1 (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2753836A1 (fr) * 1996-09-23 1998-03-27 Schneider Electric Sa Declencheur electromagnetique pour appareil electrique de protection
WO1999063564A1 (fr) * 1998-06-03 1999-12-09 Hager Electro Sous-ensemble magnetique optimise
DE19845476A1 (de) * 1998-10-02 2000-04-13 Aeg Niederspannungstech Gmbh Magnetsystem
WO2002075764A1 (de) * 2001-03-20 2002-09-26 Moeller Gebäudeautomation KG Joch mit einstückigem festkontaktträger
NL1027343C2 (nl) * 2004-10-26 2006-04-27 Eaton Electric Nv Beveiligingsschakelaar.
EP2096656A1 (de) * 2008-03-01 2009-09-02 Abb Ag Schaltgerät
WO2013107188A1 (zh) * 2012-01-20 2013-07-25 浙江鼎威科技有限公司 超薄微型断路器
CN101388306B (zh) * 2007-09-14 2014-06-11 西门子公司 保护开关设备的电磁断路器的线圈架和磁轭、电磁断路器及保护开关设备
CN104241055A (zh) * 2013-06-05 2014-12-24 松下电器产业株式会社 断路器
CN108511290A (zh) * 2018-05-31 2018-09-07 海格科技股份有限公司 小型断路器的脱扣机构
CN112151330A (zh) * 2020-10-27 2020-12-29 安徽通球智能化科技有限公司 一种非脱扣式塑壳断路器
WO2022135037A1 (zh) * 2020-12-25 2022-06-30 浙江奥来电器有限公司 一种断路器的漏电脱扣机构

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8527361U1 (de) * 1985-09-25 1986-01-09 Lindner Gmbh, Fabrik Elektrischer Lampen Und Apparate, 8600 Bamberg Kurzschlußauslöseorgan
DE3619239A1 (de) * 1986-06-07 1987-12-10 Kloeckner Moeller Elektrizit Schnellausloeser fuer leitungsschutzschalter
EP0335774A1 (de) * 1988-03-30 1989-10-04 Hager Electro S.A. Auslösemagnet für einen Leistungsschalter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8527361U1 (de) * 1985-09-25 1986-01-09 Lindner Gmbh, Fabrik Elektrischer Lampen Und Apparate, 8600 Bamberg Kurzschlußauslöseorgan
DE3619239A1 (de) * 1986-06-07 1987-12-10 Kloeckner Moeller Elektrizit Schnellausloeser fuer leitungsschutzschalter
EP0335774A1 (de) * 1988-03-30 1989-10-04 Hager Electro S.A. Auslösemagnet für einen Leistungsschalter

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0834895A1 (de) * 1996-09-23 1998-04-08 Schneider Electric Sa Elektromagnetischer Auslöser für elektrisches Schutzgerät
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
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
US6577217B1 (en) * 1998-06-03 2003-06-10 Hager Electro Optimized magnetic sub-assembly
DE19845476A1 (de) * 1998-10-02 2000-04-13 Aeg Niederspannungstech Gmbh Magnetsystem
DE19845476B4 (de) * 1998-10-02 2004-08-12 Aeg Niederspannungstechnik Gmbh & Co Kg Magnetsystem für Leitungsschutzschalter
WO2002075764A1 (de) * 2001-03-20 2002-09-26 Moeller Gebäudeautomation KG Joch mit einstückigem festkontaktträger
CZ301277B6 (cs) * 2001-03-20 2009-12-30 Moeller Gebäudeautomation KG Jho magnetického systému zkratového vypínacího zarízení
NL1027343C2 (nl) * 2004-10-26 2006-04-27 Eaton Electric Nv Beveiligingsschakelaar.
CN101388306B (zh) * 2007-09-14 2014-06-11 西门子公司 保护开关设备的电磁断路器的线圈架和磁轭、电磁断路器及保护开关设备
EP2096656A1 (de) * 2008-03-01 2009-09-02 Abb Ag Schaltgerät
US8049584B2 (en) 2008-03-01 2011-11-01 Abb Ag Switching device
WO2013107188A1 (zh) * 2012-01-20 2013-07-25 浙江鼎威科技有限公司 超薄微型断路器
CN104241055A (zh) * 2013-06-05 2014-12-24 松下电器产业株式会社 断路器
CN108511290A (zh) * 2018-05-31 2018-09-07 海格科技股份有限公司 小型断路器的脱扣机构
CN108511290B (zh) * 2018-05-31 2024-04-26 海格科技股份有限公司 小型断路器的脱扣机构
CN112151330A (zh) * 2020-10-27 2020-12-29 安徽通球智能化科技有限公司 一种非脱扣式塑壳断路器
CN112151330B (zh) * 2020-10-27 2023-07-07 贵州众联新能源科技有限公司 一种非脱扣式塑壳断路器
WO2022135037A1 (zh) * 2020-12-25 2022-06-30 浙江奥来电器有限公司 一种断路器的漏电脱扣机构

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