EP0829895B1 - Aimant permanent pour le circuit magnétique d'un déclencheur magnétique de préférence pour un disjoncteur différentiel - Google Patents

Aimant permanent pour le circuit magnétique d'un déclencheur magnétique de préférence pour un disjoncteur différentiel Download PDF

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Publication number
EP0829895B1
EP0829895B1 EP97810590A EP97810590A EP0829895B1 EP 0829895 B1 EP0829895 B1 EP 0829895B1 EP 97810590 A EP97810590 A EP 97810590A EP 97810590 A EP97810590 A EP 97810590A EP 0829895 B1 EP0829895 B1 EP 0829895B1
Authority
EP
European Patent Office
Prior art keywords
permanent magnet
magnetic
yoke
magnetic circuit
pole faces
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
EP97810590A
Other languages
German (de)
English (en)
Other versions
EP0829895A3 (fr
EP0829895A2 (fr
Inventor
Dominique Girardin
Siegfried Mayer
Siegfried Münzer
Gerhard Schneider
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.)
ABB Schweiz AG
Original Assignee
ABB Schweiz AG
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 ABB Schweiz AG filed Critical ABB Schweiz AG
Publication of EP0829895A2 publication Critical patent/EP0829895A2/fr
Publication of EP0829895A3 publication Critical patent/EP0829895A3/fr
Application granted granted Critical
Publication of EP0829895B1 publication Critical patent/EP0829895B1/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
    • 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
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part
    • H01H71/321—Electromagnetic mechanisms having permanently magnetised part 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
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part
    • H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
    • H01H71/323—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements with rotatable armature

Definitions

  • the invention is based on a permanent magnet for the magnetic circuit of a preferably in a residual current circuit breaker (FI switch) can be used magnetic release.
  • a permanent magnet feeds magnetic flux into one of two yoke formed magnetically against each other insulated sheets of the magnetic circuit.
  • the yoke is generally U-shaped educated. The ends of the U are in the closed state of the magnetic circuit bridged by a hinged armature.
  • a tripping variable such as a fault current, is in one on one of the two legs of the U plugged trip coil fed a signal. This signal is generated in the trip coil a magnetic flux which is that of permanent magnets generated magnetic flux at the location of the anchor weakens.
  • Anchor loaded spring is used in the Weakening of the magnetic permanent flux lifted from the yoke and pivoted about a bearing axis. He releases a plunger mechanical actuation of a device. For a FI switch This ram acts on a switch lock, which opening causes a contact arrangement of the FI-switch.
  • the invention takes a state of the art of permanent magnets for the magnetic circuit of a magnetic release, as published in EP-B1-0 228 345, for example.
  • permanent magnets are cylindrical or cuboid. They are each between two each having a coupling point and by a magnetic poorly conducting diaphragm from each other magnetically arranged isolated sheets of a yoke.
  • the yoke is stock use part of the magnetic circuit of a in a FI switch deten magnetic release.
  • the positioning of these magnets to the Einkopplungsstellen is relatively expensive. Since this also Air gaps can not be ruled out with certainty the magnets in the production generally oversized become.
  • FR-A 2 596 577 is a permanent magnet for magnetic release disclosed with a horizontal, to the stand area parallel cover surface part for feeding in magnetic River in an anchor and a second inclined to it Cover surface part.
  • the task is based on a permanent magnet of to create the aforementioned type, which is in a simple Way in the yoke can be positioned and which one at the same time particularly good feeding of the magnetic flux into the yoke of the magnetic circuit allows.
  • the permanent magnet according to the invention is characterized from that he arranged because of his mutually inclined, flat pole faces easily to the coupling points of can be adjusted to both yoke plates.
  • the coupling points are according to the angle of inclination of the pole faces against each other angled and also just form.
  • the Permanent magnet positions itself after its installation in The yoke is self-acting, because of the effect of the magnetic Circle guided steady flow with its two against each other arranged inclined, flat pole faces to the complementarily inclined, level coupling points of the yoke is pressed. Not to avoiding air gaps between the pole faces of the magnet and the associated bearing surfaces of the coupling points of the yoke are significantly reduced. Therefore, the coupling of the Magnetic continuous flow into the yoke significantly improved.
  • Magnetic release comprises a trough-shaped bottom 1 and a lid 2 existing insulating material.
  • a lid 2 existing insulating material.
  • an opening 3 is provided, which is the vertical guide a cylindrical ram 4 is used.
  • the plunger 4 has a thickened lower end on which is on a cuboid formed armature 5 of a magnetic circuit is seated. The upwardly directed end of the plunger 4 does not act on a illustrated switching lock on a contact arrangement of a not shown FI-switch.
  • the magnetic circuit further comprises a two sheets 7, 8 containing, U-shaped yoke 9 on.
  • the two yoke plates are using a non-magnetic material, for example a nickel alloy, existing bolt 10 about by Welding at a distance of typically 50 to 100 microns fixed to each other.
  • Welding By additional magnetically non-conductive Welding, soldering or gluing can improve the mechanical stability of the yoke 9 are increased.
  • the educated by the distance Air gap assumes the function of an otherwise usual used, foil-shaped diaphragms.
  • the two yoke plates 7, 8 are each angled such that the yoke 9 has in the region of the bend V-profile.
  • an obelisk-shaped permanent magnet 11 with planar Pole surfaces 11a, 11b arranged.
  • the two pole face 11a, 11b are each on one of the two legs 8a, 7b of the yoke. 9 at.
  • the permanent magnet 11 forming obelisk has in addition to the two pole faces 11a and 11b two to the two pole faces following, trapezoidal side surfaces and two parallel aligned, rectangular surfaces, one of which smaller the top surface and a larger the bottom surface of the Obelisk represents.
  • the two trapezoidal side surfaces are parallel to each other and perpendicular to the ground and top surfaces aligned.
  • the pole faces 11a, 11b are therefore each rectangular or square formed.
  • the reference numeral 12 is an intermediate floor of insulating material designated.
  • This intermediate floor has two on its top mutually parallel webs 13, 14. Between two webs is an undefined opening and a also not designated material recess provided which the implementation of the end portions of the yoke in the 9th containing U serve.
  • On one of the yoke 7 formed Leg 15 of the U is one of an electrical signal excitable trip coil 16 plugged. This trip coil comes with Assistance of two power connections 17 led through the floor 1 supplied with electrical power, which occurs when a Fault current is formed in a summation current transformer.
  • the reference numeral 18 is a executed as a double spring Designated spring element.
  • This spring element 18 contains two cylindrical, mirror-symmetrically arranged coil springs 19, 20 with typically up to 10 turns each.
  • Each spring 19 or 20 is mounted in a material recess 21 or 22, which is formed in the web 13 and 14 respectively.
  • the spring element 18 loads the armature 5 before the release of the magnetic release a preload force.
  • the armature 5 is located before the release of the magnetic release on the Ends of the U on.
  • the armature 5 is then by the spring element 18th loaded with a biasing force.
  • the magnetic circuit is closed and the magnetic permanent flux is from the permanent magnet 11 over the yoke plate with his as a coupling point acting leg 7b and its leg 15, the armature 5 and the Yoke 8 with its acting as a coupling point leg 8a led back to the permanent magnet.
  • a Fault current weakens the magnetic field of one in the trip coil 16 fed current signal the field of magnetic Circle in the area of the anchor 5.
  • the anchor 5 is under the Effect of the spring element 18 is tilted and leads - as shown in Fig.2 is apparent - the plunger upwards, which then by Strike on the switch lock, not shown Switching off the RCCB causes.
  • the permanent magnet 11 Due to the obelisk-shaped design of the permanent magnet 11 is the magnetic steady flow is particularly good and without substantial Scatter losses in the yoke 9 coupled. This is a consequence of two mutually inclined arranged pole faces. By the Cooperation of the two pole faces 11a and 11b and the two V-shaped angled, planar legs 8a and 7b of the yoke. 9 position the permanent magnet 11 automatically and without additional aids in the right location.
  • the permanent magnet is designed as obelisk and has two trapezoidal side surfaces, since the permanent magnet then easily introduced into the V-profile.
  • the at the obelisk or wedge to the two pole faces 11a and 11b subsequent trapezoidal or triangular side surfaces need not necessarily flat, but can also be bent be. The same applies to the footprint of the Obelisk or wedge.
  • the permanent magnet 11 therefore does not have to necessarily be executed as obelisk or wedge, but can also be a prismatoid with two mutually angled, be flat pole faces 11a and 11b.
  • the trapezoidal side surfaces of the obelisk or the triangular side surfaces of the Wedge can be isosceles or unequal and optionally arranged inclined relative to the base be. For manufacturing reasons and for the sake of a good feed of the magnetic flux into the yoke is recommended However, it is a regularly trained obelisk or Wedge with perpendicular to the base arranged trapezoidal or provide triangular side surfaces.
  • the angle between the two pole faces 11 should not be too be dull, because then no longer good positioning is guaranteed. On the other hand, the angle must not are too pointed, since the energy density of the magnet 11th then too low and accordingly too little energy in the magnetic circuit is fed. Highly recommended is an angle between 60 ° and 120 °.
  • the two yoke plates 7, 8 need not necessarily be V-shaped be angled. It is enough if the one yoke plate is flat and the other yoke plate is formed angled. Only important is that so formed when joining the two yoke plates Angle between the two sheets between the angle of inclination corresponds to the two pole face of the permanent magnet.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Breakers (AREA)

Claims (6)

  1. Aimant permanent (11) d'un circuit magnétique d'un déclencheur magnétique de préférence utilisé dans un disjoncteur différentiel, qui présente deux surfaces polaires (11a, 11b) de forme plane pour l'injection d'un flux magnétique dans une culasse (9) du circuit magnétique, qui contient deux tôles (7, 8) isolées magnétiquement l'une de l'autre, caractérisé en ce que l'aimant permanent (11) présente la forme d'un prismatoïde doté de deux côtés plans disposés obliquement l'un par rapport à l'autre, approximativement de même taille et servant de surfaces polaires (11a, 11b).
  2. Aimant permanent selon la revendication 1, caractérisé en ce que le prismatoïde est configuré en forme de biseau.
  3. Aimant permanent selon l'une des revendications 1 à 2, caractérisé en ce que les deux surfaces polaires (11a, 11b) sont disposées obliquement l'une par rapport à l'autre sous un angle de 60° à 120°.
  4. Circuit magnétique d'un déclencheur magnétique utilisé de préférence dans un disjoncteur différentiel, avec un aimant permanent (11) qui présente deux surfaces polaires (11a, 11b) de configuration plane et une culasse (9) qui contient deux tôles (7, 8) isolées magnétiquement l'une de l'autre, caractérisé en ce que les deux surfaces polaires (11a, 11b) de l'aimant permanent (11) sont inclinées l'une par rapport à l'autre et injectent le flux magnétique dans les deux tôles (7, 8).
  5. Circuit magnétique selon la revendication 4, caractérisé en ce que l'aimant permanent (11) présente la forme d'un prismatoïde essentiellement en forme de biseau.
  6. Circuit magnétique selon la revendication 4, caractérisé en ce qu'une tôle de culasse (7, 8) présente une branche plane (7a, 8a) coudée qui coopère avec une surface polaire (11a, 11b) de l'aimant permanent (11).
EP97810590A 1996-09-12 1997-08-21 Aimant permanent pour le circuit magnétique d'un déclencheur magnétique de préférence pour un disjoncteur différentiel Expired - Lifetime EP0829895B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19637077A DE19637077A1 (de) 1996-09-12 1996-09-12 Permanentmagnet für den magnetischen Kreis eines vorzugsweise in einem Fehlerstromschutzschalter einsetzbaren Magnetauslösers
DE19637077 1996-09-12

Publications (3)

Publication Number Publication Date
EP0829895A2 EP0829895A2 (fr) 1998-03-18
EP0829895A3 EP0829895A3 (fr) 2000-11-02
EP0829895B1 true EP0829895B1 (fr) 2005-06-08

Family

ID=7805369

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97810590A Expired - Lifetime EP0829895B1 (fr) 1996-09-12 1997-08-21 Aimant permanent pour le circuit magnétique d'un déclencheur magnétique de préférence pour un disjoncteur différentiel

Country Status (4)

Country Link
EP (1) EP0829895B1 (fr)
AT (1) ATE297598T1 (fr)
DE (2) DE19637077A1 (fr)
ES (1) ES2243973T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19924279A1 (de) * 1999-05-27 2000-11-30 Aweco Appliance Sys Gmbh & Co Vorrichtung zur automatischen Stromabschaltung eines Stromkreises einer Haushaltsmaschine
FR2874740B1 (fr) 2004-09-02 2006-10-20 Schneider Electric Ind Sas Declencheur electromagnetique et appareil de coupure electrique le comportant
FR2877137B1 (fr) 2004-10-21 2006-12-22 Schneider Electric Ind Sas Declencheur electromagnetique et appareil de protection electrique le comportant
DE102005050636A1 (de) * 2005-10-20 2007-05-03 Siemens Ag Magnetsystem eines Magnetauslösers
WO2012169975A1 (fr) 2011-06-06 2012-12-13 Eti Elektroelement D.D. Relais électromécanique à culasse améliorée, en particulier relais pour l'interruption d'un circuit électrique dans le cas d'un courant différentiel, et interrupteur comprenant un tel relais
DE102011082114B3 (de) 2011-09-05 2013-01-31 Siemens Aktiengesellschaft Elektromagnetischer Antrieb
US11874140B2 (en) 2016-02-17 2024-01-16 Infineon Technologies Ag Tapered magnet

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB317149A (en) * 1928-05-19 1929-08-15 Siemens Brothers & Co Ltd Improvements in or relating to electro-magnetic devices
DE846863C (de) * 1942-08-10 1952-08-18 Siemens Ag Relais
FR1541052A (fr) * 1967-08-11 1968-10-04 Ind Electr De La Seine L Déclencheur électro-magnétique ultra-sensible
AT372217B (de) * 1980-11-04 1983-09-12 Biegelmeier Gottfried Haltemagnetausloeser hoher empfindlichkeit
AT375211B (de) * 1981-09-16 1984-07-10 Biegelmeier Gottfried Haltemagnetausloeser hoher empfindlichkeit
ATE46056T1 (de) * 1985-12-13 1989-09-15 Maier & Cie C Magnetausloeser fuer fehlerstromschutzschalter.
FR2596577B1 (fr) * 1986-03-28 1993-04-30 Serd Soc Et Realisa Disjonct Declencheur polarise

Also Published As

Publication number Publication date
ATE297598T1 (de) 2005-06-15
ES2243973T3 (es) 2005-12-01
EP0829895A3 (fr) 2000-11-02
DE19637077A1 (de) 1998-03-19
EP0829895A2 (fr) 1998-03-18
DE59712338D1 (de) 2005-07-14

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