EP0117250A1 - Method of adjusting a trip device with permanent magnet - Google Patents

Method of adjusting a trip device with permanent magnet Download PDF

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Publication number
EP0117250A1
EP0117250A1 EP84890015A EP84890015A EP0117250A1 EP 0117250 A1 EP0117250 A1 EP 0117250A1 EP 84890015 A EP84890015 A EP 84890015A EP 84890015 A EP84890015 A EP 84890015A EP 0117250 A1 EP0117250 A1 EP 0117250A1
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EP
European Patent Office
Prior art keywords
release
holding magnet
tripping
magnetic field
current
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
EP84890015A
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German (de)
French (fr)
Other versions
EP0117250B1 (en
Inventor
Gerhard Amon
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.)
Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederosterreich
Felten and Guilleaume Austria AG
Original Assignee
Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederosterreich
Felten and Guilleaume Austria 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
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Application filed by Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederosterreich, Felten and Guilleaume Austria AG filed Critical Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederosterreich
Publication of EP0117250A1 publication Critical patent/EP0117250A1/en
Application granted granted Critical
Publication of EP0117250B1 publication Critical patent/EP0117250B1/en
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
    • H01H71/327—Manufacturing or calibrating methods, e.g. air gap treatments
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F11/104—Treads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/003—Methods and devices for magnetising permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
    • H01H69/01—Apparatus or processes for the manufacture of emergency protective devices for calibrating or setting of devices to function under predetermined conditions

Definitions

  • the invention relates to a method for adjusting holding magnet releases, in particular those for residual current circuit breakers.
  • Residual current circuit breakers are usually built today with a holding magnet release for cost reasons and to achieve small tripping currents.
  • the holding magnet release must be set to a certain sensitivity so that the required tripping current of the residual current circuit breaker is achieved together with the differential converter.
  • a known method for adjusting the sensitivity is the regulation of the permanent flow, which e.g. by turning or moving the permanent magnet (see AT-PS 242 777).
  • the permanent flux changes over the tripping armature and thus the current that has to be passed through the field winding to weaken the permanent flux over the tripping armature to such an extent that the tripping armature falls off the yoke body due to the pulling action of the tripping spring.
  • the automation of this known adjustment method is costly and must either take place at the open residual current circuit breaker or the residual current circuit breaker is equipped with an adjustment opening which has to be closed after the adjustment in order to prevent unauthorized intervention.
  • the invention is based on the object of specifying an adjustment method which can also be carried out on the fully assembled, completely closed residual current circuit breaker and which does without any movement of the permanent magnet.
  • the holding magnet release is brought into a magnetic field, which is preferably rotated step by step until the magnetization of the permanent magnet and thus the permanent flux through the release armature of the holding magnet release is changed so far that the release armature at a predetermined current through the excitation winding falls off the yoke body, ie the holding magnet releases.
  • the procedure according to the invention is preferably such that the holding magnet release is brought into the region of two mutually perpendicular magnetic fields and that the resulting magnetic field is rotated by preferably gradually changing the strength of the magnetic fields.
  • This embodiment can be carried out with permanently mounted coils and is particularly suitable for automation because the rotation of the resulting magnetic field can be done simply by changing the current in at least one partial coil.
  • the adjustment in the resulting magnetic field A cheese is also particularly inexpensive because there are no spatial problems with the power supply lines for the residual current circuit breaker in which the holding magnet release to be adjusted is installed.
  • a residual current circuit breaker 1 is brought into the interior of a cheese 2 with a holding magnet release.
  • a permanent magnet 3 shown in broken lines in the holding magnet release. If current flows through both partial coils 2a, 2b of the cross-wound coil, a corresponding magnetic field with direction A arises with a corresponding winding direction, with a reversed partial coil 2a a magnetic field in direction C.
  • Any resulting magnetic fields can be achieved in all directions between A and C by unequal currents in the partial coils 2a and 2b.
  • the magnetic field can thus be "rotated” by changing the currents in the partial coils 2a and 2b.
  • the permanent magnet 3 After switching off the current flowing only very briefly through the partial coils 2a and 2b, the permanent magnet 3 keeps the magnetic field in the desired direction. The same effect is therefore achieved as if the permanent magnet magnetized in a certain direction would have been physically rotated in accordance with the known adjustment method.
  • the residual current circuit breaker 1 can be held and switched on by a device (not shown) and can be switched into a tripping circuit by contacts (not shown).
  • the tripping current of the earth leakage circuit breaker 1 is now adjusted by repeatedly rotating the cross coil magnetic field, turning the switch on and measuring the tripping current until the predetermined tripping current is reached.
  • This adjustment process can be carried out without difficulty by a processor-controlled automatic system without human intervention.

Abstract

1. A method of adjusting holding magnet tripping devices, in particular for earth-leakage circuit breakers (1), characterized in that the holding magnet tripping device is arranged in a magnetic field the direction of which is rotated, preferably stepwise, until the magnetisation of the permanent magnet (3) and thereby the permanent flux through the tripping armature of the holding magnet tripping device is changed to such an extent that the tripping armature drops away from the yoke body when a tripping current of predermined strength flows through the excitation coil.

Description

Die Erfindung betrifft ein Verfahren zur Justierung von Haltemagnetauslösern, insbesondere solchen für Fehlerstrom-Schutzschalter.The invention relates to a method for adjusting holding magnet releases, in particular those for residual current circuit breakers.

Fehlerstrom-Schutzschalter werden heute meist aus Kostengründen und zur Erzielung kleiner Auslöseströme mit einem Haltemagnetauslöser gebaut. Der Haltemagnetauslöser muß auf eine bestimmte Empfindlichkeit eingestellt werden, damit zusammen mit dem Differentialwandler der erforderliche Auslösestrom des Fehlerstrom-Schutzschalters erreicht wird.Residual current circuit breakers are usually built today with a holding magnet release for cost reasons and to achieve small tripping currents. The holding magnet release must be set to a certain sensitivity so that the required tripping current of the residual current circuit breaker is achieved together with the differential converter.

Ein bekanntes Verfahren zur Empfindlichkeitseinstellung ist die Regulierung des Permanentflusses, die z.B. durch Verdrehen oder Verschieben des Permanentmagneten erfolgen kann (vgl. AT-PS 242 777). Durch das Verdrehen des Permanentmagneten verändert sich der Permanentfluß über den Auslöseanker und damit der Strom, der über die Erregerwicklung geführt werden muß, um den Permanentfluß über den Auslöseanker soweit zu schwächen, daß der Auslöseanker durch die Zugwirkung der Auslösefeder vom Jochkörper abfällt. Die Automatisierung dieses bekannten Justierverfahrens ist kostspielig und muß entweder am geöffneten Fehlerstrom-Schutzschalter erfolgen oder der Fehlerstrom-Schutzschalter ist mit einer Einstellöffnung ausgestattet, die nach der Justierung zur Verhinderung eines unbefugten Eingriffes verschlossen werden muß.A known method for adjusting the sensitivity is the regulation of the permanent flow, which e.g. by turning or moving the permanent magnet (see AT-PS 242 777). By turning the permanent magnet, the permanent flux changes over the tripping armature and thus the current that has to be passed through the field winding to weaken the permanent flux over the tripping armature to such an extent that the tripping armature falls off the yoke body due to the pulling action of the tripping spring. The automation of this known adjustment method is costly and must either take place at the open residual current circuit breaker or the residual current circuit breaker is equipped with an adjustment opening which has to be closed after the adjustment in order to prevent unauthorized intervention.

Ein weiterer Nachteil des bekannten Justierverfahrens ist es, daß beim Verdrehen oder Verschieben des Permanentmagneten Abriebteilchen entstehen können, die, wenn sie zwischen Auslöseanker ind Jochkörper des Haltemagnetauslösers gelangen, 3eine Funktion stören. Weiters muß eine Sicherung vorgesenen werden, die den Permanentmagnet vor Verdrehen oder Verschieben durch Erschütterungen schützt. Derartige Sicherungen bestehen entweder in Form eines federnden Bauelementes, das zwar den Justiervorgang gestattet, aber bei Erschütterungen den Permanentmagnet vor selbsttätigem Verlagern schützt, oder durch Aufbringen eines Sicherungslackes bzw. ähnlichem nach dem Justiervorgang. Beides verursacht Kosten und verhindert eine rationelle Befestigung des Permanentmagneten am Jochkörper, z.B. durch Punktschweißen.Another disadvantage of the known adjustment method is that when the permanent magnet is rotated or displaced, abrasion particles can arise which, when they get between the release armature and the yoke body of the holding magnet release, 3 impair a function. Furthermore, a backup must be provided that the permanent magnet protects against twisting or shifting due to vibrations. Such fuses exist either in the form of a resilient component which, although it allows the adjustment process, but protects the permanent magnet from automatic displacement in the event of vibrations, or by applying a securing lacquer or the like after the adjustment process. Both cause costs and prevent rational attachment of the permanent magnet to the yoke body, for example by spot welding.

Der Erfindung liegt die Aufgabe zugrunde, ein Justierverfahren anzugeben, das auch am fertig zusammengebauten, vollständig verschlossenen Fehlerstrom-Schutzschalter ausgeführt werden kann und das auf jegliche Bewegung des Permanentmagneten verzichtet.The invention is based on the object of specifying an adjustment method which can also be carried out on the fully assembled, completely closed residual current circuit breaker and which does without any movement of the permanent magnet.

Erfindungsgemäß wird dies dadurch erreicht, daß der Haltemagnetauslöser in ein Magnetfeld gebracht wird, das vorzugsweise schrittweise solange gedreht wird, bis die Magnetisierung des Permanentmagneten und damit der Permanentfluß über den Auslöseanker des Haltemagnetauslösers soweit verändert ist, daß der Auslöseanker bei einem vorbestimmten Strom über die Erregerwicklung vom Jochkörper abfällt, d.h. der Haltemagnetauslöser auslöst. In der Praxis wird erfindungsgemäß bevorzugt so vorgegangen, daß der Haltemagnetauslöser in den Bereich zweier zueinander senkrecht stehender Magnetfelder gebracht wird und daß das resultierende Magnetfeld durch vorzugsweise schrittweises Verändern der Stärke der Magnetfelder gedreht wird. Diese Ausführungsform kann mit fest montierten Spulen ausgeführt werden und ist zur Automatisierung besonders geeignet, weil die Drehung des resultierenden Magnetfeldes einfach durch Ändern des Stromes in mindestens'einer Teilspule erfolgen kann. Die Justierung im resultierenden Magnetfeld einer Kreuzspule ist auch deswegen besonders günstig, weil keinerlei räumliche Probleme mit den Stromzuleitungen für den Fehlerstrom-Schutzschalter, in dem der zu justierende Haltemagnetauslöser eingebaut ist, entstehen.According to the invention this is achieved in that the holding magnet release is brought into a magnetic field, which is preferably rotated step by step until the magnetization of the permanent magnet and thus the permanent flux through the release armature of the holding magnet release is changed so far that the release armature at a predetermined current through the excitation winding falls off the yoke body, ie the holding magnet releases. In practice, the procedure according to the invention is preferably such that the holding magnet release is brought into the region of two mutually perpendicular magnetic fields and that the resulting magnetic field is rotated by preferably gradually changing the strength of the magnetic fields. This embodiment can be carried out with permanently mounted coils and is particularly suitable for automation because the rotation of the resulting magnetic field can be done simply by changing the current in at least one partial coil. The adjustment in the resulting magnetic field A cheese is also particularly inexpensive because there are no spatial problems with the power supply lines for the residual current circuit breaker in which the holding magnet release to be adjusted is installed.

Weitere Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung unter Bezugnahme auf die Zeichnung. Es zeigt

  • Figur 1 eine Anordnung zur Durchführung des Verfahrens in Seitenansicht und
  • Figur 2 die Anordnung aus Figur 1 in Draufsicht.
Further features and details of the invention will become apparent from the following description with reference to the drawing. It shows
  • Figure 1 shows an arrangement for performing the method in side view
  • Figure 2 shows the arrangement of Figure 1 in plan view.

Wie Figur 1 zeigt, wird ein Fehlerstrom-Schutzschalter 1 mit einem Haltemagnetauslöser in den Innenraum einer Kreuzspule 2 gebracht. Im Haltemagnetauslöser befindet sich ein strichliert dargestellter Permanentmagnet 3. Sind beide Teilspulen 2a, 2b der Kreuzspule stromdurchflossen, entsteht bei entsprechendem Wickelsinn ein resultierendes Magnetfeld mit der Richtung A, bei umgepolter Teilspule 2a ein Magnetfeld in Richtung C.As shown in FIG. 1, a residual current circuit breaker 1 is brought into the interior of a cheese 2 with a holding magnet release. There is a permanent magnet 3 shown in broken lines in the holding magnet release. If current flows through both partial coils 2a, 2b of the cross-wound coil, a corresponding magnetic field with direction A arises with a corresponding winding direction, with a reversed partial coil 2a a magnetic field in direction C.

Ist nur die Teilspule 2b stromdurchflossen, kommt ein Magnetfeld mit Richtung B zustande.If only the partial coil 2b has current flowing through it, a magnetic field with direction B is created.

Durch ungleich hohe Ströme in den Teilspulen 2a und 2b können beliebige resultierende Magnetfelder in allen Richtungen zwischen A und C erzielt werden. Das Magnetfeld kann somit durch Ändern der Ströme in den Teilspulen 2a und 2b "gedreht" werden.Any resulting magnetic fields can be achieved in all directions between A and C by unequal currents in the partial coils 2a and 2b. The magnetic field can thus be "rotated" by changing the currents in the partial coils 2a and 2b.

Der Permanentmagnet 3 behält nach dem Abschalten des nur ganz kurz durch die Teilspulen 2a und 2b fließenden Stromes das Magnetfeld in der gewünschten Richtung. Es wird daher der gleiche Effekt erreicht, als ob der einmal in einer bestimmten Richtung aufmagnetisierte Permanentmagnet entsprechend dem bekannten Justierverfahren körperlich gedreht worden wäre.After switching off the current flowing only very briefly through the partial coils 2a and 2b, the permanent magnet 3 keeps the magnetic field in the desired direction. The same effect is therefore achieved as if the permanent magnet magnetized in a certain direction would have been physically rotated in accordance with the known adjustment method.

Der Fehlerstrom-Schutzschalter 1 kann durch eine nicht dargestellte Vorrichtung gehalten und eingeschaltet, sowie durch nicht dargestellte Kontakte in einen Auslösestromkreis geschaltet werden.The residual current circuit breaker 1 can be held and switched on by a device (not shown) and can be switched into a tripping circuit by contacts (not shown).

Die Justierung des Auslösestromes des Fehlerstrom-Schutzschalters 1 erfolgt nun durch wiederholtes elektrisches Weiterdrehen des Kreuzspulen-Magnetfeldes, Einschalten des Schalters und Messen des Auslösestromes, bis der vorbestimmte Auslösestrom erreicht ist.The tripping current of the earth leakage circuit breaker 1 is now adjusted by repeatedly rotating the cross coil magnetic field, turning the switch on and measuring the tripping current until the predetermined tripping current is reached.

Dieser Justiervorgang kann ohne Schwierigkeiten durch eine prozessorgesteuerte Automatik ohne menschliches Zutun erfolgen.This adjustment process can be carried out without difficulty by a processor-controlled automatic system without human intervention.

Da der Fehlerstrom-Schutzschalter beim Justieren des Haltemagnetauslösers vollständig fertig zusammengebaut ist, kann unmittelbar nach dem Justiervorgang eine automatische Endprüfung, bestehend aus Durchgangs-, Isolations- und Prüfkreisgrüfungen angeschlossen werden, was eine weitere Kostensenkung erlaubt.Since the residual-current device for adjustment of the holding magnet release is completely fully assembled, may g nes an automatic end ERIFICATION p consisting of continuity, insulation and Prüfkreisgrüfungen be connected immediately after the Justiervor, resulting in a further cost reduction are allowed.

Claims (4)

1. Verfahren zur Justierung von Haltemagnetauslösern, insbesondere solchen für Fehlerstrom-Schutzschalter, dadurch gekennzeichnet, daß der Haltemagnetauslöser in ein Magnetfeld gebracht wird, das vorzugsweise schrittweise solange gedreht wird, bis die Magnetisierung des Permanentmagneten und damit der Permanentfluß über den Auslöseanker des Haltemagnetauslösers soweit verändert ist, daß der Auslöseanker bei einem vorbestimmten Strom über die Erregerwicklung vom Jochkörper abfällt, d.h. der Haltemagnetauslöser auslöst.1. A method for adjusting the holding magnet triggers, especially those for residual current circuit breakers, characterized in that the holding magnet release is brought into a magnetic field, which is preferably rotated gradually until the magnetization of the permanent magnet and thus the permanent flux via the release armature of the holding magnet release changes so far is that the tripping armature drops from the yoke body at a predetermined current via the excitation winding, ie the magnetic release triggers. 2. Verfahren nach Patentanspruch 1, dadurch gekennzeichnet, daß der Haltemagnetauslöser in den Bereich zweier zueinander senkrecht stehender Magnetfelder gebracht wird und daß das resultierende Magnetfeld durch vorzugsweise schrittweises Verändern der Stärke der Magnetfelder gedreht wird.2. The method according to claim 1, characterized in that the holding magnet release is brought into the region of two mutually perpendicular magnetic fields and that the resulting magnetic field is rotated by preferably gradually changing the strength of the magnetic fields. 3. Verfahren nach Patentanspruch 1 oder 2, dadurch gekennzeichnet, daß eine prozessorgesteuerte Automatik das schrittweise Weiterdrehen des Magnetfeldes, Rückstellen des Haltemagnetauslösers und Messen des Auslösestromes des Haltemagnetauslösers solange durchführt, bis die gewünschte Auslösestromstärke erreicht ist.3. The method according to claim 1 or 2, characterized in that a processor-controlled automatic carries out the gradual further rotation of the magnetic field, resetting the holding magnet release and measuring the release current of the holding magnet release until the desired release current is reached. 4. Verfahren nach einem der Patentansprüche 1 bis 3, dadurch gekennzeichnet, daß die Justierung des Haltemagnetauslösers im fertig zusammengebauten und vollständig verschlossenen Fehlerstrom-Schutzschalter durchgeführt wird.4. The method according to any one of claims 1 to 3, characterized in that the adjustment of the holding magnet release is carried out in the fully assembled and completely closed residual current circuit breaker.
EP84890015A 1983-01-20 1984-01-18 Method of adjusting a trip device with permanent magnet Expired EP0117250B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0018283A AT378442B (en) 1983-01-20 1983-01-20 METHOD FOR ADJUSTING THE HOLDING MAGNETIC TRIGGER
AT182/83 1983-01-20

Publications (2)

Publication Number Publication Date
EP0117250A1 true EP0117250A1 (en) 1984-08-29
EP0117250B1 EP0117250B1 (en) 1986-08-06

Family

ID=3483672

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84890015A Expired EP0117250B1 (en) 1983-01-20 1984-01-18 Method of adjusting a trip device with permanent magnet

Country Status (5)

Country Link
EP (1) EP0117250B1 (en)
AT (1) AT378442B (en)
AU (1) AU567123B2 (en)
DE (1) DE3460402D1 (en)
ES (1) ES8502570A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0307736A1 (en) * 1987-09-15 1989-03-22 Siemens Aktiengesellschaft Method and device for adjusting a trip device with a permanent magnet
DE102016110979A1 (en) 2016-06-15 2017-12-21 Johnson Electric Germany GmbH & Co. KG Method for adjusting a magnetic release

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2200606A1 (en) * 1972-09-14 1974-04-19 Felten & Guilleaume Schaltanl
GB2041649A (en) * 1979-02-12 1980-09-10 Felten & Guilleaume Carlswerk Improvements in or relating to magnet systems for triggers, for instance in protective fault switches

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2200606A1 (en) * 1972-09-14 1974-04-19 Felten & Guilleaume Schaltanl
GB2041649A (en) * 1979-02-12 1980-09-10 Felten & Guilleaume Carlswerk Improvements in or relating to magnet systems for triggers, for instance in protective fault switches

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0307736A1 (en) * 1987-09-15 1989-03-22 Siemens Aktiengesellschaft Method and device for adjusting a trip device with a permanent magnet
DE102016110979A1 (en) 2016-06-15 2017-12-21 Johnson Electric Germany GmbH & Co. KG Method for adjusting a magnetic release
DE102016110979B4 (en) * 2016-06-15 2020-08-13 Johnson Electric Germany GmbH & Co. KG Procedure for adjusting a magnetic release

Also Published As

Publication number Publication date
ES529440A0 (en) 1985-01-01
AU567123B2 (en) 1987-11-12
ES8502570A1 (en) 1985-01-01
DE3460402D1 (en) 1986-09-11
ATA18283A (en) 1984-12-15
EP0117250B1 (en) 1986-08-06
AU2362784A (en) 1984-07-26
AT378442B (en) 1985-08-12

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