EP0073002A1 - Déclencheur électromagnétique - Google Patents

Déclencheur électromagnétique Download PDF

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Publication number
EP0073002A1
EP0073002A1 EP82107474A EP82107474A EP0073002A1 EP 0073002 A1 EP0073002 A1 EP 0073002A1 EP 82107474 A EP82107474 A EP 82107474A EP 82107474 A EP82107474 A EP 82107474A EP 0073002 A1 EP0073002 A1 EP 0073002A1
Authority
EP
European Patent Office
Prior art keywords
webs
coil
leg
window
yoke
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
EP82107474A
Other languages
German (de)
English (en)
Other versions
EP0073002B1 (fr
Inventor
Herbert Ing. Grad. Ebel
Fritz Dipl.-Ing. Heine
Erhard Ing. Grad. Runtsch
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.)
BBC Brown Boveri AG Germany
Original Assignee
Brown Boveri und Cie AG Germany
BBC Brown Boveri AG Germany
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 Brown Boveri und Cie AG Germany, BBC Brown Boveri AG Germany filed Critical Brown Boveri und Cie AG Germany
Priority to AT82107474T priority Critical patent/ATE15732T1/de
Publication of EP0073002A1 publication Critical patent/EP0073002A1/fr
Application granted granted Critical
Publication of EP0073002B1 publication Critical patent/EP0073002B1/fr
Expired 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
    • 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 holding magnet release which can be controlled by means of a coil and which can be used in particular in the case of residual current circuit breakers.
  • a controllable magnetic circuit has become known (DE-PS 949 502) which can be used as a blocking magnet release and which has two iron bodies arranged next to one another, each of which has a window through which a coil can be wound.
  • FIGS. 1 and 2 of the drawing in which the prior art is shown.
  • a similar blocking magnet release has also become known from DE-PS 10 78 227.
  • each blocking magnet trigger has at least two yoke parts (yoke plates) which have to be kept at a distance and connected by further, non-magnetic parts.
  • Triggers that are not referred to and act as blocking magnet triggers, but as so-called Ge R enmagnetleitersauslöser have become known for example from FR-PS 1 337 305 or DE-OS 24 30 288. These generally have a U-shaped magnet yoke, the leg ends of which are covered by a magnet armature, a permanent magnet being arranged on one of the legs or the transverse web, and the coil being arranged on the other leg.
  • the disadvantage of the known counter magnetization triggers is that they only trip in one current direction, therefore they have a longer response time and unequal sensitivity in both pulse current directions of a primary current in a converter to which the trigger is connected with a secondary winding.
  • the object of the invention is therefore to provide a magnetic release of the type mentioned, which is simple in comparison to the known magnetic release and has higher sensitivity.
  • a blocking magnet release is thus formed which has such a simple shape as was previously only possible with counter-magnetization releases, namely as a yoke only contains a one-piece part with two legs, which has all the contact surfaces for the armature.
  • a magnetic release which is approximately U-shaped and one leg of which has two webs, has become known from DE-OS 2 830 438.
  • this release does not act as a blocking magnet release because the magnet armature, which is attracted against the leg against the force of a spring, does not cover the entire yoke, but only the area or the web on which the coil is wound, whereas the other web serves as a shunt. This does not form a blocking magnet release.
  • At least one window is provided in one of the legs, through which two window webs extending transversely to the pole face of the leg are formed, around each of which a coil is wound.
  • a further embodiment can go that two windows are provided in one of the legs, which are separated by a window web running parallel to the pole face, around which a coil is wound.
  • this window web can lie in the region of the connection point between the leg and the cross bar if the yoke has two legs and a cross bar connecting them to one another.
  • one leg can be slotted; this means that one coil can be applied to each of the webs thus created, which enables the plugging of prefabricated coils and therefore considerably simplifies production.
  • This design also allows the use of coils with a large number of turns of thin wire, so that triggers with high impedance can be produced. It is essential for the correct functioning that the triggering (tearing off the armature) takes place by weakening the overall flow. Accordingly, the durability on the armature is generated at the pole point that carries the total flux, while the two webs, which can carry a different magnetic flux, only serve as bearing points. Decreases in a partial flow do not lead to tripping afterwards. In this respect, the advantages of the blocking magnet principle are realized in this embodiment of the invention. A corresponding arrangement of the force component (spring) on the armature is required to implement this embodiment of the invention.
  • the magnetic circuit according to the invention can be used as a blocking magnet release for a residual current circuit breaker, wherein low residual currents can be switched off, the polarity of which is not important.
  • FIGS. 1 and 2 A known blocking magnet release is shown in FIGS. 1 and 2 (similar to DE-PS 949 502). This has two adjacent yokes 1 and 2 with a permanent magnet 3 located between them and two windows 4 and 5 in each yoke 1 and 2. A coil 6 is wound in the two windows. Between the two yokes 1 and 2 there is a shunt air gap 7. Above the webs 2a and 2b or la and 2b there is a magnet armature 8 which is pulled off against the holding force in the direction of arrow F during a triggering process.
  • FIG. 2 shows the equivalent circuit diagram of the arrangement according to FIG. 1.
  • the permanent magnet 3 as a "generator” and the webs la, lb, 2a, 2b as the hinged armature 8 are shown as magnetic resistors.
  • the floodings generated by the coil 6 are shown as positive or negative voltage sources.
  • Embodiments of the invention are shown schematically in FIGS. 3 to 5. Thereby owns each magnetic circuit is only a yoke, which is designated by the reference number 1.
  • All three embodiments have a permanent magnet 3, two webs la, lb; only the embodiment according to FIG. 5 has two further webs 1c and 1d.
  • the embodiment according to FIG. 3 has a window 4, which according to FIG. 5 has two windows 4a and 4b and FIG. 4 has a slot or a recess which is also designated by reference number 4 in order to clarify the similarity.
  • the configurations acc. Figures 3 and 4 have a coil 6a and 6b around each web, whereas the configuration according to. Figure 5 has only one coil 6.
  • the permanent magnet 3 generates a magnetic flux in the same direction in the webs 1a to 1d.
  • Two control flows are generated by the coil 6, which flow through the webs la and lb or lc and ld in opposite directions: through the webs la and lb according to the direction of the arrow Fl and the webs lc and ld according to the direction of the arrow F2.
  • the main flux generated by the permanent magnet 3 runs in the direction of the arrow F3
  • the magnetic flux in the webs 1b and 1c increases, whereas the magnetic flux in the webs 1a and 1d decreases.
  • the webs 1b and 1c became saturated, so that the pulling force on the gastric tanker 8 is reduced.
  • the arrangement according to FIGS. 5 and 7 is also cheaper compared to the arrangement according to FIG. 1, because here too Compared to the known only a yoke is provided.
  • FIGS. 8 and the following each show a detailed embodiment.
  • the electromagnetic release according to FIG. 8 has a U-shaped yoke 10 with two legs 12 and 14 which are connected to one another by means of a crossbar 16.
  • a permanent magnet 18 is attached to the outside of the leg 14.
  • the spring holder 20 has an extension 22 which runs parallel to the outer web 16 and in which a recess 24 is arranged, through which the hook-shaped end 26 of a tension spring 28 extends.
  • the two legs 12 and 14 end in pole faces 30 and 32, over which a magnetic armature 34 is placed, which continues beyond the leg 14 into an extension 36, in which a recess 38 is made, into which the hook-shaped other end 40 the spring 28 is suspended.
  • the spring holder 20 is fork-shaped in its upper region, two fork ends 42 and 44 being formed, between which the extension 36 engages and is guided.
  • the armature 34 has a taper 46 projecting toward the other leg, which lies on the pole face 30 of the leg 12.
  • the leg 12 has a window 48, so that two webs 50 and 52 are formed, around which a coil 54 and 56 is wound.
  • the webs 50 and 52 are thus constrictions which correspond to the constrictions la and lb in FIG. Grooves 62 and 64 can further reduce these constrictions (see FIG. 11).
  • the permanent magnet 18 is in Yoke 10 generates a magnetic flux, which is divided into the two magnetic fluxes by the webs 50 and 52. Due to the flooding generated by the coils z. B. the magnetic flux in the web 52 increased and decreased in the web 50; the mode of operation has been shown in FIG. 3.
  • FIGS. 12 and 13 A further embodiment of a yoke is shown in FIGS. 12 and 13.
  • the yoke which has the reference numeral 70, is in principle U-shaped with an Ouersteg 72 and a leg 74, on the outer surface similar to the leg 14 of the trigger gem.
  • Figure 8 is a permanent magnet attached (not shown).
  • the other leg 76 is arranged obliquely with respect to the orientation of the leg 74, so that it encloses an angle with the leg 74. Otherwise, the shape is similar to that of the yoke 10. of Figure 8. This creates a larger space for the coils.
  • FIG. 14 shows a winding to show the sense of winding for the two coils 54 and 56.
  • the coil wire 80 is first inserted into the interior of the window 48 lying between the two window webs 52 and 54, looped around the window web 52 several times in the direction of arrow P, specifically here counter clockwise. Then the wire is threaded into the window 48 and clockwise acc. Arrow direction P1 also wrapped around the window web 54 several times. The number of turns is determined by the purpose and the desired sensitivity.
  • the trigger has a U-shaped magnetic yoke 90 with two legs 92 and 94 and a crossbar 96 connecting both legs together; the leg 94 corresponds to the leg 14, and accordingly the permanent magnet 18, the spring 28, the spring holder 20 and the support of the hinged armature 34 are also arranged there.
  • the other leg 92 has two windows 100 and 102 which are separated from one another by a window web 98 which runs parallel to the pole face and through which a coil 104 is threaded through the web 98.
  • window web 106 instead of arranging the window web in the region of the leg in such a way that both windows lie in the leg, one can also arrange the window web 106 at the connection point between the leg 92 and the cross web 96, in such a way that one window 108 in the cross web 96 and the other window 110 in the leg 92 (Fig. 17).
  • the magnetic release has a U-shaped yoke 120 with a leg 122, on the outside of which a permanent magnet 123 is arranged.
  • the yoke 120 On the side opposite the leg 122, the yoke 120 has two webs 124 and 126, so that a space 128 is formed between the two.
  • a coil 130 and 132 is formed around each of the two webs 124 and 126. With their pole faces 134 and 136, the two webs 124 and 126 form bearing surfaces for the armature 138, which is under the action of a spring 140 which engages on an extension 142 projecting beyond the two webs 124 and 126.
  • a magnetic flux is generated in the yoke 120 by the permanent magnet 124, which holds the armature on the pole face 144 of the leg 122 against the action of the spring 140. If a magnetic flux is generated due to a current flow through the coils 130 and 132, then the attraction force on the pole face 144 on the armature 138 becomes smaller than the pulling force of the spring 140, so that the armature folds in the direction of arrow G around the bearing surfaces 134 and 136 at the ends of the two webs 124 and 126.
  • FIGS. 21 to 23 The arrangement of the parts is the same as that shown in FIGS. 18 to 20; only the geometric dimensions have changed.
  • the two webs 124 and 126 which carry the two coils are pulled apart widely and the cross web 120 is shortened as much as possible, the armature being adapted accordingly.
  • the Svstem is thus rotated relative to the according to the figures 18 to 20 in a rectangular housing 90 0th This allows larger coils to be accommodated, so that the sensitivity of the trigger can be increased.
  • the yoke can also have the shape of a V.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Magnetic Treatment Devices (AREA)
EP82107474A 1981-08-21 1982-08-17 Déclencheur électromagnétique Expired EP0073002B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82107474T ATE15732T1 (de) 1981-08-21 1982-08-17 Sperrmagnetausloeser.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3133126 1981-08-21
DE3133126 1981-08-21

Publications (2)

Publication Number Publication Date
EP0073002A1 true EP0073002A1 (fr) 1983-03-02
EP0073002B1 EP0073002B1 (fr) 1985-09-18

Family

ID=6139813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82107474A Expired EP0073002B1 (fr) 1981-08-21 1982-08-17 Déclencheur électromagnétique

Country Status (3)

Country Link
EP (1) EP0073002B1 (fr)
AT (1) ATE15732T1 (fr)
DE (1) DE8124466U1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0154619A2 (fr) * 1984-03-05 1985-09-11 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Schrems-Eugenia Niederösterreich Déclencheur à aimant de maintien
WO1989001718A1 (fr) * 1987-08-14 1989-02-23 Weber Ag, Fabrik Elektrotechnischer Artikel Und Ap Dispositif de protection pour appareil electrique
EP0316295A2 (fr) * 1987-11-09 1989-05-17 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Déclencheur à aimant de maintien
EP0377479A1 (fr) * 1989-01-03 1990-07-11 Holec Systemen En Componenten B.V. Déclencheur pour interrupteur électrique et interrupteur électrique équipé de ce déclencheur
WO1991002370A2 (fr) * 1989-07-28 1991-02-21 Federal Pioneer Limited Disjoncteurs miniatures
TR25244A (tr) * 1989-05-12 1993-01-01 Thomson Brandt Gmbh ENTEGRE METIN CÖZüCüLü VIDEO REKORDER.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1261961B (de) * 1963-01-04 1968-02-29 Siemens Ag Sperrmagnetsystem
DE2116473A1 (de) * 1970-04-08 1971-11-04 Gossen Gmbh Haltemagnet Schutzrelais nach dem Sperrmagnetprinzip
FR2194038A1 (fr) * 1972-07-26 1974-02-22 Baco Const Elec Riques
DE2951900A1 (de) * 1979-12-21 1981-07-02 Brown, Boveri & Cie Ag, 6800 Mannheim Ausloeser fuer fehlerstromschutzschalter
EP0031474A2 (fr) * 1979-12-21 1981-07-08 BROWN, BOVERI & CIE Aktiengesellschaft Mannheim Déclencheur pour un disjoncteur à courant de fuite

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1261961B (de) * 1963-01-04 1968-02-29 Siemens Ag Sperrmagnetsystem
DE2116473A1 (de) * 1970-04-08 1971-11-04 Gossen Gmbh Haltemagnet Schutzrelais nach dem Sperrmagnetprinzip
FR2194038A1 (fr) * 1972-07-26 1974-02-22 Baco Const Elec Riques
DE2951900A1 (de) * 1979-12-21 1981-07-02 Brown, Boveri & Cie Ag, 6800 Mannheim Ausloeser fuer fehlerstromschutzschalter
EP0031474A2 (fr) * 1979-12-21 1981-07-08 BROWN, BOVERI & CIE Aktiengesellschaft Mannheim Déclencheur pour un disjoncteur à courant de fuite

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0154619A2 (fr) * 1984-03-05 1985-09-11 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Schrems-Eugenia Niederösterreich Déclencheur à aimant de maintien
EP0154619A3 (fr) * 1984-03-05 1986-05-28 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Schrems-Eugenia Niederösterreich Déclencheur à aimant de maintien
WO1989001718A1 (fr) * 1987-08-14 1989-02-23 Weber Ag, Fabrik Elektrotechnischer Artikel Und Ap Dispositif de protection pour appareil electrique
EP0316295A2 (fr) * 1987-11-09 1989-05-17 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Déclencheur à aimant de maintien
EP0316295A3 (fr) * 1987-11-09 1990-10-10 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Déclencheur à aimant de maintien
EP0377479A1 (fr) * 1989-01-03 1990-07-11 Holec Systemen En Componenten B.V. Déclencheur pour interrupteur électrique et interrupteur électrique équipé de ce déclencheur
US5006826A (en) * 1989-01-03 1991-04-09 Holec Systemen En Componenten B.V. Trip device for an electrical switch and an electrical switch with this trip device
TR25244A (tr) * 1989-05-12 1993-01-01 Thomson Brandt Gmbh ENTEGRE METIN CÖZüCüLü VIDEO REKORDER.
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

Also Published As

Publication number Publication date
DE8124466U1 (de) 1983-01-27
EP0073002B1 (fr) 1985-09-18
ATE15732T1 (de) 1985-10-15

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