EP0002748A1 - Magnetauslöser für Fehlerstromschutzschalter - Google Patents

Magnetauslöser für Fehlerstromschutzschalter Download PDF

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Publication number
EP0002748A1
EP0002748A1 EP78101714A EP78101714A EP0002748A1 EP 0002748 A1 EP0002748 A1 EP 0002748A1 EP 78101714 A EP78101714 A EP 78101714A EP 78101714 A EP78101714 A EP 78101714A EP 0002748 A1 EP0002748 A1 EP 0002748A1
Authority
EP
European Patent Office
Prior art keywords
armature
leaf spring
pole pieces
spring
magnetic release
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Withdrawn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
EP78101714A
Other languages
German (de)
English (en)
French (fr)
Inventor
Walter Oberholzer
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 CMC Carl Meier AG
Original Assignee
CMC Carl Maier and Cie 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 CMC Carl Maier and Cie AG filed Critical CMC Carl Maier and Cie AG
Publication of EP0002748A1 publication Critical patent/EP0002748A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/24—Parts rotatable or rockable outside coil
    • H01H50/28—Parts movable due to bending of a blade spring or reed
    • 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

Definitions

  • the invention relates to a magnetic release for residual current circuit breakers with a tripping coil, two pole pieces, a movable armature, with a spring acting thereon and a permanent magnet.
  • a magnetic trigger is known from DE-PS 2 133 645.
  • the armature In order to achieve a constant trigger sensitivity and a long service life of such triggers, the armature must be guided very precisely with respect to the pole shoes so that the armature always lies in exactly the same position on the pole shoes.
  • the armature In the known magnetic release, the armature is arranged for this purpose at the end of a carrier mounted on a shaft.
  • the first spring acts on the armature via a driver and tries to lift the armature off the pole pieces.
  • a second spring is used primarily to eliminate the game between the carrier and the Driver. Despite the relatively great effort involved, this known construction does not allow the armature to be guided without play.
  • the invention has for its object to provide a magnetic release of the type mentioned, the armature is guided particularly precisely with respect to the pole pieces with the simplest design means.
  • This object is achieved in that the armature is guided and held in relation to the pole shoes by the spring designed as a leaf spring.
  • This solution has the advantage of enabling a particularly cost-effective production of a magentic release, which is characterized by constant sensitivity to release due to the return of the armature to the same position on the pole pieces. It does not matter whether the leaf spring provided in the context of the invention presses the armature against the pole shoes or strives to lift it off the pole shoes against the action of the permanent magnet.
  • the leaf spring is approximately straight. It is particularly advantageous if the leaf spring is completely rigidly attached to the pole shoes at the end facing away from the armature. With a suitable shape of the pole shoes, it can be attached directly to one or both of them; According to a preferred embodiment, however, the end of the leaf spring opposite the armature can also be fastened to a carrier which in turn is rigidly fastened to at least one of the pole shoes. In this sense, the leaf spring can advantageously be fastened to both the armature and the carrier by at least one welding spot. In order to avoid undesirable vibrations of the armature, the leaf spring can consist of a vibration-damping material. Instead, can also be provided be that the leaf spring is provided on one or two sides with a vibration-damping coating.
  • an embodiment of a trigger according to the invention is shown partially in a side view as an example. 1 with an anchor, 2 with a first leaf spring. Two pole pieces 3 and 4 can have the same shape. A second spring is also shown as a leaf spring 5 and, like the leaf spring 2, is connected to a support 6 by spot welding. However, a screw or snap connection could also be used, especially if one or both springs are made of plastic.
  • An indicated arm 7 is in operative connection with the switching lock to be triggered and presses on the armature 1 when the switch is switched on, thus looking to lift it off the pole pieces 3 and 4.
  • the trigger coil is not shown, it is attached to the trigger in the usual way.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
EP78101714A 1977-12-23 1978-12-15 Magnetauslöser für Fehlerstromschutzschalter Withdrawn EP0002748A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH15933/77 1977-12-23
CH1593377 1977-12-23

Publications (1)

Publication Number Publication Date
EP0002748A1 true EP0002748A1 (de) 1979-07-11

Family

ID=4413138

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78101714A Withdrawn EP0002748A1 (de) 1977-12-23 1978-12-15 Magnetauslöser für Fehlerstromschutzschalter

Country Status (3)

Country Link
EP (1) EP0002748A1 (es)
ES (1) ES476739A1 (es)
IT (1) IT1100852B (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0369111A1 (de) * 1988-11-12 1990-05-23 Felten & Guilleaume Energietechnik AG Magnetsystem für Schnellabschaltung

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE542436A (es) * 1954-11-02
DE748899C (de) * 1942-07-21 1944-11-13 Schutzschalter, insbesondere zum Schutze gegen Fehlerstrom
US2391692A (en) * 1942-07-25 1945-12-25 Gen Electric Electromagnetic relay
DE835624C (de) * 1949-09-30 1952-04-03 Berker Geb Elektrischer Selbstschalter, insbesondere als Beruehrungsschutz
DE903233C (de) * 1944-09-24 1954-02-04 Siemens Ag Bewegliche Stromfuehrung aus Baendern od. dgl.
GB1025969A (en) * 1963-10-19 1966-04-14 Morphy Richards Cray Ltd Improvements relating to electro-mechanical relays
FR2055352A5 (es) * 1969-07-23 1971-05-07 Siemens Ag
FR2075891A1 (es) * 1970-01-02 1971-10-15 Felten & Guilleaume Gmbh
CH519242A (de) * 1970-07-21 1972-02-15 Carl Maier & Cie Elek Sche Sch Magnetauslöser

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748899C (de) * 1942-07-21 1944-11-13 Schutzschalter, insbesondere zum Schutze gegen Fehlerstrom
US2391692A (en) * 1942-07-25 1945-12-25 Gen Electric Electromagnetic relay
DE903233C (de) * 1944-09-24 1954-02-04 Siemens Ag Bewegliche Stromfuehrung aus Baendern od. dgl.
DE835624C (de) * 1949-09-30 1952-04-03 Berker Geb Elektrischer Selbstschalter, insbesondere als Beruehrungsschutz
BE542436A (es) * 1954-11-02
GB1025969A (en) * 1963-10-19 1966-04-14 Morphy Richards Cray Ltd Improvements relating to electro-mechanical relays
FR2055352A5 (es) * 1969-07-23 1971-05-07 Siemens Ag
FR2075891A1 (es) * 1970-01-02 1971-10-15 Felten & Guilleaume Gmbh
CH519242A (de) * 1970-07-21 1972-02-15 Carl Maier & Cie Elek Sche Sch Magnetauslöser

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0369111A1 (de) * 1988-11-12 1990-05-23 Felten & Guilleaume Energietechnik AG Magnetsystem für Schnellabschaltung

Also Published As

Publication number Publication date
IT1100852B (it) 1985-09-28
IT7830999A0 (it) 1978-12-19
ES476739A1 (es) 1979-06-01

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn
RIN1 Information on inventor provided before grant (corrected)

Inventor name: OBERHOLZER, WALTER