EP1324365B1 - Déclencheur électromagnétique - Google Patents

Déclencheur électromagnétique Download PDF

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Publication number
EP1324365B1
EP1324365B1 EP02027427A EP02027427A EP1324365B1 EP 1324365 B1 EP1324365 B1 EP 1324365B1 EP 02027427 A EP02027427 A EP 02027427A EP 02027427 A EP02027427 A EP 02027427A EP 1324365 B1 EP1324365 B1 EP 1324365B1
Authority
EP
European Patent Office
Prior art keywords
yoke
cross
coil
accordance
magnetic
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 - Fee Related
Application number
EP02027427A
Other languages
German (de)
English (en)
Other versions
EP1324365A1 (fr
Inventor
Josef Herschberger
Maximilian Kellner
Gerald Lehner
Reinhard Schmid
Bernd Trautmann
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP1324365A1 publication Critical patent/EP1324365A1/fr
Application granted granted Critical
Publication of EP1324365B1 publication Critical patent/EP1324365B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H01H71/1054—Means for avoiding unauthorised release
    • 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 relates to a trigger relay with one out of one Yoke and a tilt armature formed magnetic circuit, the Yoke two magnetic legs, namely a coil leg and has a bearing leg, and wherein the tilt anchor such around a arranged between this and the bearing leg
  • the pivot axis can be tilted so that both the tilt anchor and the Bearing legs each have a leg near the pivot point Form magnetic circuit.
  • Such a trip relay e.g. from the magazine “etz", volume 110 (1989), volume 12, pages 580 to 584 known is usually used in a protective switching device, especially in a fault current (FI) - or in a differential current (DI) circuit breaker.
  • FI fault current
  • DI differential current
  • a trigger or voltage signal which is a trigger relay connected to the secondary winding controls.
  • the trigger relay also called the trigger is usually kinetic energy through magnetic field compensation released that decouples a switching mechanism. The switching mechanism in turn then causes Separation of the conductors of the conductor network.
  • Electromagnetic relay described that a folding anchor having.
  • the folding anchor is on a yoke leg stored, which has a recess. This recess serves to increase the attraction of the anchor during its Equalize movement.
  • the release relay which is usually designed as a holding magnet release has one housed in a housing or relay housing magnetic circuit or magnetic circuit on the through a yoke also called an iron core with magnetic or pole legs and a magnet armature covering their poles is formed.
  • a magnetic leg called a coil leg carries a coil as a trip or magnetic coil, while the second magnetic leg is called a bearing leg is.
  • For controlling or triggering the trigger relay are coil connections led out of the housing, which with the secondary winding of the summation current transformer can.
  • the trigger coil is connected to these coil connections a trigger voltage for triggering is applied such that the magnetic field generated by the trigger coil one by one Counteracts permanent or permanent magnets generated magnetic field.
  • the triggering moment of the trigger is therefore that of the permanent magnet generated and acting on the magnet armature Force (holding or holding force) through the release coil so far reduces that caused by a release spring Force (pulling force) typically as a so-called toggle anchor pulls the magnet armature, which is held pivotably, from the yoke.
  • a release spring Force typically as a so-called toggle anchor pulls the magnet armature, which is held pivotably, from the yoke.
  • the trigger threshold of such Trigger relay is on the one hand by the level of Excitation of the trip coil and on the other hand by the holding force or magnetic force of the permanent magnet determines the holds the magnet armature on the yoke.
  • This magnetic force is divided into individual holding forces that each between a pole face of the yoke and the magnet armature as well as between the permanent magnet and the magnet armature.
  • the holding force between the pole face of the coil leg and the magnet armature is in common trigger relay relatively small, because on the one hand the cross section of the yoke in the area the coil compared to other areas of the yoke is to be able to carry the coil, and secondly the Coil leg relatively wide compared to the bearing leg is spaced from the permanent magnet to an installation space for to provide the coil between the coil leg and the permanent magnet.
  • Unintentional tripping of the trip relay i.e. a take off of the magnet armature from the yoke can be sufficient strong magnetization of the yoke can be prevented.
  • a strong Magnetization of the yoke by a strong permanent magnet has the disadvantage, however, that the one to be fed to the coil for tripping so-called trip apparent power correspondingly large have to be.
  • the invention has for its object a a tilt anchor tripping relay to indicate that an unintended Triggering, especially by a vibration, reliably prevented and at the same time triggering with a low release apparent power.
  • this object is achieved by the features of claim 1.
  • leg near the pivot point that is, a bearing leg and / or a toggle anchor of a magnetic circuit tripping relay, a reduction in cross section in the magnetic circuit on.
  • a reduction in cross section in the magnetic circuit on Through this reduction in cross section magnetic flux in the two magnetic legs, namely the Bearing leg and a coil leg, one part of the Magnetic circuit forming yoke equalized.
  • one Reduction in cross-section in the tilting anchor is expedient less distant from the bearing leg than from the coil leg.
  • the axis of rotation of the tilt armature has from the pole face of the bearing leg a smaller distance than from the pole face of the Coils leg.
  • the holding force between the pole face of the Coil leg and the magnet armature thus generated over one larger lever arm a torque holding the magnetic armature on the yoke than the holding force between the pole face of the bearing leg and the magnet armature.
  • the bearing leg has a reduced cross-section, this is preferably designed as an opening that the bearing leg penetrates preferably in the transverse direction of the yoke.
  • the mechanical stability of the bearing arm is therefore compared to a massive bearing leg not essential impaired.
  • the pole face of the bearing leg opposite the pole face of a massive bearing leg not downsized. At the same time there is a through the opening easy attachment option for construction and Functional groups on the yoke.
  • the yoke is preferably made of a soft magnetic material educated. Preferred embodiments with respect to electrical and magnetic properties of the trip relay are the subject of claims 6 to 10.
  • Shown trigger relay 1 of a residual current circuit breaker comprises an iron core or a yoke 2 from one soft magnetic material with a nickel content between 40% and 85%, a permanent or permanent magnet 3 and one Magnetic armature 4.
  • the yoke 2 which has a base plate 5 the wall of a housing 6, includes one each to the base plate 5 adjoining bearing legs 7 and one Coil legs 8. Both magnetic legs 7,8 are each of a pole face 9, 10 lying in one plane is closed, on which the magnet armature 4 rests.
  • the magnet armature 4 is executed as a toggle anchor around an edge 11 on the pole face 9 of the bearing leg 7 is tiltable. The edge 11 forms thus the axis of rotation of the tilt anchor 4.
  • the tilt anchor 4 is outside of the yoke 2 with a tensioned Tension spring 12 connected as a release spring, the force F1 exerts on the tilt anchor 4, by means of a lever arm a1 a torque is generated that the rocker arm 4 of the illustrated Tilt closed position to an open position tries.
  • a plunger 13 is the Penetrates housing 6, pressed out of the housing 6 and thus triggers a switching mechanism, not shown.
  • the spring force F1 acts magnetic holding forces F2, F3, F4 opposite.
  • a magnetic force is generated, which counteracts the magnetic holding forces F2, F3, F4, so that when a release apparent power P A is exceeded, the torque generated by the tension spring 12 is the sum of the the magnetic holding forces F2, F3, F4 generated torque exceeds and the tilt armature 4 is opened.
  • the current flow in the coil 14 is generated by a summation current transformer, not shown, which detects a fault current in a conductor network. When the fault current is detected, the separation of the conductor network in which the fault current occurs is triggered from the energy supply to this conductor network.
  • the coil leg 8 has, in order to be able to carry the coil 14, a smaller cross section than the bearing leg 7.
  • Due to the the coil leg 8 surrounding the coil 14 is the permanent magnet 3 not arranged centrally between the magnetic legs 7, 8, but offset to the bearing leg 7 out.
  • the bearing leg 7 has an opening 15 as a cross-sectional reduction, which is in the transverse direction QR of the yoke 2 extends.
  • the bearing leg 7 thus has one larger, non-reduced cross-section Q7a and, in the area the opening 15, a smallest cross section Q7b, the into two equal partial cross-sections Q7b1, Q7b2 to both Split sides of the opening 15.
  • this opening 15 for example the shape of a Circle, oval, rectangle or any other polygon can have is the mechanical stability of the bearing arm 7 hardly weakened compared to a massive bearing leg.
  • the opening 15 offers a simple possibility to fasten a component within the trigger relay 1, in particular also, the bearing leg 7 itself on the housing 6 fix. In the area of the pole face 9 of the bearing leg 7 this has the non-reduced cross section Q7a.
  • the smallest cross section Q7b of the bearing arm 7 corresponds approximately the cross section Q8 of the coil leg 8.
  • the holding force F4 between the coil leg 8 and the tilt anchor 4 a significant contribution to the mounting of the tilt anchor 4 on Yoke 2.
  • Figure 4 shows an alternative embodiment of the cross-sectional reduction 15 a taper in a bearing leg 7.
  • the reduction in cross section 15 is more symmetrical Incision made on both sides of the bearing leg 7.
  • FIG. 1a, b, 2a, b, 3a, b also has the pole face in this embodiment 9 of the bearing leg 7 on a surface that is not reduced cross section corresponds to Q7a. Wear of the Pole surface 9, in particular at its edge, the axis of rotation 11 forms, due to the abutting on the pole face 9 Kippankers 4 is therefore practically impossible.
  • FIGS. 5a and 5b Another alternative embodiment of a trip relay 1 is shown in FIGS. 5a and 5b.
  • the case does not have the bearing leg 7 but the tilt anchor 4 the cross-sectional reduction 15 on that shown in Figure 5a Embodiment as an opening and in the in Figure 5b illustrated embodiment as a taper or constriction is trained.
  • the bearing leg 7 therefore has one constant cross section Q7a, Q7b.
  • the reduction in cross-section 15 of the tilt anchor 4 is closer to the bearing leg in both cases 7 as arranged on the coil leg 8 to the magnetic River that penetrates the bearing leg in comparison to reduce the magnetic flux through the coil leg 7 and thus the distribution of the magnetic flux through the to equalize both magnetic legs 7.8.
  • An embodiment of the trigger relay 1, in which both the bearing leg 7 and the tilt anchor 4 each have a cross-sectional reduction 15 or more cross-sectional reductions 15, is also feasible.
  • a holding opening 16 in the magnet armature 4 outside the magnetic circuit is used to hold the Tension spring 12.
  • the trip relay 1 is characterized overall by compact dimensions, a manufacturing-friendly construction, economical use of materials and very good electrical and mechanical properties, in particular with regard to the insensitivity to vibrations and the reliability of the trip even at a low apparent trip power P A.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Dc Machiner (AREA)

Claims (10)

  1. Relais déclencheur (1) comportant un circuit magnétique formé d'une culasse (2) et d'un induit basculant (4), la culasse (2) comportant une branche de bobine (8) et une branche de support (7) conformées en branches magnétiques (7, 8), l'induit basculant (4) étant apte à basculer autour d'un axe de rotation (11) situé entre cet induit basculant et la branche de support (7) de sorte que l'induit basculant (4) et la branche de support (7) forment chacun une branche (4, 7), proche du point de rotation, du circuit magnétique, au moins l'une des branches (4, 7) proches du point de rotation présentant une réduction de section (15) dans le circuit magnétique et un aimant permanent (3) étant agencé parallèlement à la branche de support (7) et la branche de bobine (8), caractérisé en ce que l'aimant permanent (3) est placé plus près de la branche de support (7) que de la branche (8) de bobine et la réduction de section (15) est dimensionné de telle sorte que le flux magnétique généré par l'aimant permanent (3) dans la branche de support (7) et celui généré dans la branche de bobine (8) sont sensiblement égaux.
  2. Relais déclencheur selon la revendication 1, caractérisé en ce que la réduction de section est conformée en ouverture (15).
  3. Relais déclencheur selon la revendication 1 ou 2, caractérisé en ce que la branche de support (7) présente une réduction de section (15).
  4. Relais déclencheur selon les revendications 1 à 3, caractérisé en ce que l'ouverture (15) traverse la branche de support (7) dans la direction transversale (OR) de la culasse (2).
  5. Relais déclencheur selon l'une des revendications 1 à 4, caractérisé en ce que l'induit basculant (4) présente une réduction de section (15), cette réduction de section étant plus proche de la branche de support (7) que de la branche de bobine (8).
  6. Relais déclencheur selon l'une des revendications 1 à 5, caractérisé en ce que, dans la région de la section la plus faible (Q7b) de la branche de support (7), la densité de flux magnétique est au maximum de 85% de l'induction de saturation du matériau de la culasse (2), ce matériau ayant une teneur en nickel comprise entre 70% et 85%.
  7. Relais déclencheur selon l'une des revendications 1 à 5, caractérisé en ce que, dans la région de la section la plus faible (Q7b) de la branche de support (7), la densité de flux magnétique est au maximum de 90% de l'induction de saturation du matériau de la culasse (2), ce matériau ayant une teneur en nickel comprise entre 40% et 69%.
  8. Relais déclencheur selon l'une des revendications 1 à 7, caractérisé en ce que, dans la région de la section (Q8) de la branche de bobine (8), la densité de flux magnétique est au maximum de 85% de l'induction de saturation du matériau de la culasse (2), ce matériau ayant une teneur en nickel comprise entre 70% à 85%.
  9. Relais déclencheur selon l'une des revendications 1 à 7, caractérisé en ce que, dans la région de la section (Q8) de la branche de bobine (8), la densité de flux magnétique est au maximum de 90% de l'induction de saturation du matériau de la culasse (2), ce matériau ayant une teneur en nickel comprise entre 40% et 69%.
  10. Disjoncteur de protection à courant de défaut comportant un relais déclencheur (1) selon l'une des revendications 1 à 9.
EP02027427A 2001-12-20 2002-12-09 Déclencheur électromagnétique Expired - Fee Related EP1324365B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10163011 2001-12-20
DE10163011 2001-12-20

Publications (2)

Publication Number Publication Date
EP1324365A1 EP1324365A1 (fr) 2003-07-02
EP1324365B1 true EP1324365B1 (fr) 2004-11-17

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ID=7710200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02027427A Expired - Fee Related EP1324365B1 (fr) 2001-12-20 2002-12-09 Déclencheur électromagnétique

Country Status (5)

Country Link
EP (1) EP1324365B1 (fr)
CN (1) CN1427435A (fr)
AR (1) AR037966A1 (fr)
BR (1) BR0205418A (fr)
DE (1) DE50201560D1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004013608A1 (de) * 2004-03-19 2005-10-27 Siemens Ag Auslöserelais
DE102004016950B3 (de) * 2004-04-06 2006-01-19 Siemens Ag Auslöserrelais
DE102004017779A1 (de) * 2004-04-13 2005-11-10 Siemens Ag Auslöserelais
CN102347176A (zh) * 2011-09-19 2012-02-08 广东天富电气集团有限公司 一种电磁式脱扣器工作方法
CN103426690B (zh) * 2013-08-14 2016-02-03 厦门宏发电声股份有限公司 一种并联型磁路的磁保持继电器
CN108281333A (zh) * 2017-12-12 2018-07-13 上海良信电器股份有限公司 一种电磁式脱扣装置的磁路组件
CN108281332A (zh) * 2017-12-12 2018-07-13 上海良信电器股份有限公司 一种电磁式脱扣装置
CN108074783A (zh) * 2018-01-18 2018-05-25 常熟开关制造有限公司(原常熟开关厂） 磁脱扣装置及其整定电流调整方法、开关电器
CN113793785A (zh) * 2021-09-17 2021-12-14 乐清拓优电气有限公司 一种剩余电流断路器的跳闸装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL252405A (fr) * 1959-06-08
DE1614172A1 (de) * 1966-07-14 1970-05-27 Matsushita Electric Works Ltd Elektromagnetisches Relais
FR1541052A (fr) * 1967-08-11 1968-10-04 Ind Electr De La Seine L Déclencheur électro-magnétique ultra-sensible
AT378862B (de) * 1984-03-05 1985-10-10 Felten & Guilleaume Ag Oester Haltemagnetausloeser
FR2596577B1 (fr) * 1986-03-28 1993-04-30 Serd Soc Et Realisa Disjonct Declencheur polarise

Also Published As

Publication number Publication date
BR0205418A (pt) 2004-07-20
EP1324365A1 (fr) 2003-07-02
AR037966A1 (es) 2004-12-22
CN1427435A (zh) 2003-07-02
DE50201560D1 (de) 2004-12-23

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