EP0307736A1 - Method and device for adjusting a trip device with a permanent magnet - Google Patents

Method and device for adjusting a trip device with a permanent magnet Download PDF

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Publication number
EP0307736A1
EP0307736A1 EP88114371A EP88114371A EP0307736A1 EP 0307736 A1 EP0307736 A1 EP 0307736A1 EP 88114371 A EP88114371 A EP 88114371A EP 88114371 A EP88114371 A EP 88114371A EP 0307736 A1 EP0307736 A1 EP 0307736A1
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Prior art keywords
current
pulse
magnetization
tripping
fault
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EP88114371A
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German (de)
French (fr)
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EP0307736B1 (en
Inventor
Reinhard Dipl.-Ing. Fh Solleder
Reinhard Dipl.-Ing. Schmid
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Siemens AG
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Siemens AG
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Priority to AT88114371T priority Critical patent/ATE100965T1/en
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    • 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
    • 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

Definitions

  • the invention first relates to a method for adjusting holding magnet triggers for residual current circuit breakers, according to which the permanent magnet of its field strength is set to a desired value by first magnetizing and then demagnetizing in a controlled manner.
  • a method for adjusting relays with the function of holding magnets for residual current circuit breakers is known (DE-A-2 245 151).
  • the permanent magnet which was initially maximally magnetized, is demagnetized to the desired field strength.
  • the permanent magnetic field In the case of residual current circuit breakers, such as those on the market, the permanent magnetic field, on the other hand, is usually made adjustable in that the permanent magnet is displaceably or rotatably mounted on the yoke of the holding magnet, so that the impressed field strength can be changed and the holding magnet can thereby be adjusted.
  • Such storage of the permanent magnet for a holding magnet requires that the adjustment is carried out before the final assembly or that adjustment openings are provided in the housing.
  • adjustment openings also frequently disrupt the overall design concept of a device. Mechanical storage is also subject to wear.
  • the permanent magnet By demagnetizing the permanent magnet one wants to avoid such difficulties.
  • the permanent magnet In the known procedure (DE-A-2 245 151), the permanent magnet is for this purpose approximated to a current-carrying demagnetization coil until it is sufficiently demagnetized to enable the ge in a relay ensure the required response values.
  • the response values have not yet been met in one measurement and will already be exceeded in the next measurement, ie that the permanent magnet has been demagnetized too much.
  • EP-B1-0 117 250 the holding magnet or the permanent magnet is not led out of the magnetic field for demagnetizing, but a rotating magnetic field is run over the permanent magnet.
  • a rotating magnetic field is run over the permanent magnet.
  • the invention has for its object to develop a simplified method that also makes it possible to adjust built-in holding magnets.
  • the described object is achieved by a method according to claim 1.
  • magnetization is carried out with a pulse of the same magnetic field direction and demagnetized in a pulse from an alternating magnetic field with a falling amplitude.
  • fault current for example alternating current, pulse current and smooth direct fault current
  • the procedure is such that the triggering of the holding magnet release occurs approximately in the middle of the triggering interval of the triggering current that is permissible for a first type of fault current. This is the tripping current for the other errors current types determined and recorded.
  • the setting for the type of residual current at which a deviation occurs is made in such a way that magnetization is performed with a pulse whose initial amplitude is higher compared to the original initial amplitude when the tripping current from the Trigger interval falls out at the top. Otherwise it is magnetized first and then demagnetized with a pulse with a lower initial amplitude. Thereupon, measurements are carried out again for all types of residual current to be taken into account, whereupon further settings are made if necessary, based on the last determined initial amplitude.
  • a commercially available pulse magnetizing device can be used for magnetizing and demagnetizing.
  • An advantageous device for performing the method according to the invention is that in a computer-controlled pulse management device for a batch of holding magnet triggers for the permanent magnets, the initial amplitudes of the pulses for demagnetizing are stored, for which the tripping of the holding magnet releases is within the required trigger interval.
  • the storage of the determined initial amplitudes of the demagnetization pulses enables simple quality monitoring of the modules in the trip circuit, e.g. of the total current transformer.
  • the stored values form a wealth of experience that enables faster and easier adjustment for each device type.
  • a holding magnet release to be adjusted can be arranged at the measuring station 1 between the pole pieces of an electromagnet 2.
  • the permanent magnet is to be aligned with its direction of polarization in the direction of the field of the electromagnet 2.
  • the excitation coils 3 of the electromagnet 2 receive current pulses via the line 4 from a magnetizing device 5, which is controlled by a computer 6 via the control line 7.
  • Measuring station 1 is designed to accept and connect a residual current circuit breaker and to record the residual current at which the magnetic release of the residual current circuit breaker responds. The measured and recorded values are fed to processor 6 via line 8 for data acquisition.
  • the drawing shows the basic structure of a suitable pulse magnetizer with which the method according to the invention can be carried out.
  • Demagnetizing enables very precise adjustment and leads to a very stable magnetization state. This makes the permanent magnet insensitive to external influences such as temperature or magnetic fields. In the case of a residual current circuit breaker with electronic components in the tripping circuit, these can be protected against voltage peaks during adjustment, such as are induced during magnetization and demagnetization, if a short circuit turn is connected upstream of the residual current circuit breaker.
  • a procedure in which the summation current transformer is magnetically saturated by a sufficiently high smooth direct current in the primary winding during magnetization and demagnetization is suitable as further protection methods.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Breakers (AREA)

Abstract

In order to adjust retaining magnet trip devices, the field strength of the permanent magnet is adjusted to a nominal value. For this purpose, it is initially magnetised and subsequently demagnetised in a monitored manner. According to the invention, magnetisation is carried out by applying a pulse in the same magnetic field direction and demagnetisation is carried out by applying a pulse of decreasing amplitude from an alternating magnetic field. For use in fault-current circuit breakers, the retaining magnet is adjusted for a plurality of fault-current types. <IMAGE>

Description

Die Erfindung bezieht sich zunächst auf ein Verfahren zum Justie­ren von Haltemagnetauslösern für Fehlerstromschutzschalter, wo­nach dessen Permanentmagnet in seiner Feldstärke auf einen Soll­wert eingestellt wird, indem zunächst aufmagnetisiert und an­schließend kontrolliert abmagnetisiert wird. Ein derartiges Ver­fahren zum Justieren von Relais mit der Funktion von Haltemagne­ten für Fehlerstromschutzschalter ist bekannt (DE-A-2 245 151).The invention first relates to a method for adjusting holding magnet triggers for residual current circuit breakers, according to which the permanent magnet of its field strength is set to a desired value by first magnetizing and then demagnetizing in a controlled manner. Such a method for adjusting relays with the function of holding magnets for residual current circuit breakers is known (DE-A-2 245 151).

Hierzu wird der anfangs maximal magnetisierte Permanentmagnet bis zur gewünschten Feldstärke abmagnetisiert.For this purpose, the permanent magnet, which was initially maximally magnetized, is demagnetized to the desired field strength.

Bei Fehlerstromschutzschaltern, wie sie auf dem Markt sind, wird das Permanentmagnetfeld dagegen üblicherweise dadurch justier­bar gemacht, daß der Permanentmagnet am Joch des Haltemagneten verschieblich oder drehbar gelagert ist, so daß die eingeprägte Feldstärke verändert und der Haltemagnet dadurch justiert wer­den kann. Eine derartige Lagerung des Permanentmagneten für einen Haltemagneten, wie er als Auslöser für Fehlerstromschutz­schalter üblich ist, erfordert, daß die Justierung vor dem end­gültigen Zusammenbau erfolgt oder daß im Gehäuse Justieröffnun­gen vorgesehen werden. Von Justieröffnungen möchte man jedoch absehen, um die Funktionssicherheit des äußerst staubempfind­lichen Haltemagneten und somit die Sicherheit des Fehlerstrom­schutzschalters nicht zu beeinträchtigen. Justieröffnungen stören auch häufig das konstruktive Gesamtkonzept bei einem Gerät. Die mechanische Lagerung ist außerdem der Abnutzung aus­gesetzt.In the case of residual current circuit breakers, such as those on the market, the permanent magnetic field, on the other hand, is usually made adjustable in that the permanent magnet is displaceably or rotatably mounted on the yoke of the holding magnet, so that the impressed field strength can be changed and the holding magnet can thereby be adjusted. Such storage of the permanent magnet for a holding magnet, as is customary as a trigger for residual current circuit breakers, requires that the adjustment is carried out before the final assembly or that adjustment openings are provided in the housing. However, one would like to refrain from adjusting openings in order not to impair the functional safety of the extremely dust-sensitive holding magnet and thus the safety of the residual current circuit breaker. Adjustment openings also frequently disrupt the overall design concept of a device. Mechanical storage is also subject to wear.

Durch Abmagnetisieren des Permanentmagneten möchte man derartige Schwierigkeiten vermeiden. Bei der bekannten Vorgehensweise (DE-A-2 245 151) wird der Permanentmagnet hierzu an eine strom­durchflossene Entmagnetisierungsspule so lange angenähert, bis er ausreichend abmagnetisiert ist, um in einem Relais die ge­ geforderten Ansprechwerte sicherzustellen. In der Praxis ist es jedoch schwierig, die geeigneten Justierungswerte zu erreichen: Entweder nähert man das Relais mit eingebautem Permanentmagneten der Entmagnetisierungsspule so lange, bis das Relais anspricht, worauf sich diese Werte wieder verändern, wenn das Relais aus dem Magnetfeld wieder herausgeführt wird. Oder man mißt den Ansprechwert des Relais nachdem man es aus dem Magnetfeld wieder herausgeführt hat und muß dabei viele Messungen durchführen, da so nicht sicher ist, wann das Relais die geforderten Ansprech­werte erfüllt. In der Praxis wird man feststellen, daß die An­sprechwerte bei einer Messung noch nicht erfüllt sind und bei der nächsten Messung bereits überschritten werden, d.h. daß der Permanentmagnet zu stark abmagnetisiert worden ist.By demagnetizing the permanent magnet one wants to avoid such difficulties. In the known procedure (DE-A-2 245 151), the permanent magnet is for this purpose approximated to a current-carrying demagnetization coil until it is sufficiently demagnetized to enable the ge in a relay ensure the required response values. In practice, however, it is difficult to achieve the appropriate adjustment values: either the relay with built-in permanent magnet is moved closer to the demagnetizing coil until the relay responds, whereupon these values change again when the relay is removed from the magnetic field. Or you measure the response value of the relay after you have brought it out of the magnetic field again and have to take many measurements, since it is not certain when the relay will meet the required response values. In practice it will be found that the response values have not yet been met in one measurement and will already be exceeded in the next measurement, ie that the permanent magnet has been demagnetized too much.

Nach einem anderen bekannten Verfahren (EP-B1-0 117 250), führt man nicht den Haltemagneten bzw. den Permanentmagneten aus dem Magnetfeld zum Abmagnetisieren heraus, sondern läßt ein rotie­rendes Magnetfeld über den Permanentmagenten hinweglaufen. Zum serienmäßigen Justieren von Haltemagneten ist es hierbei je­doch erforderlich, die Position des Permanentmagneten zu zwei gekreuzten Spulen sehr genau einzustellen, um reproduzierbare Werte zu erhalten.According to another known method (EP-B1-0 117 250), the holding magnet or the permanent magnet is not led out of the magnetic field for demagnetizing, but a rotating magnetic field is run over the permanent magnet. For the standard adjustment of holding magnets, however, it is necessary to set the position of the permanent magnet to two crossed coils very precisely in order to obtain reproducible values.

Der Erfindung liegt die Aufgabe zugrunde, ein vereinfachtes Verfahren zu entwickeln, das es gleichfalls ermöglicht, auch eingebaute Haltemagnete zu Justieren.The invention has for its object to develop a simplified method that also makes it possible to adjust built-in holding magnets.

Die Lösung der geschilderten Aufgabe erfolgt nach der Erfindung durch ein Verfahren nach Anspruch 1. Danach wird mit einem Impuls gleicher magnetischer Feldrichtung aufmagnetisiert und in einem Impuls aus einem Wechselmagnetfeld mit fallender Amplitude abmagnetisiert. Für mehrere Fehlerstromarten, beispielsweise Wechselstrom, Pulsstrom und glatter Gleichfehlerstrom, wird dabei so vorgegangen, daß zunächst die Auslösung des Haltemagnet­auslösers etwa in der Mitte des für eine erste Fehlerstromart zulässigen Auslöseintervalls der Auslösestromstärke eintritt. Hierauf wird die Auslösestromstärke für die weiteren Fehler­ stromarten festgestellt und diese festgehalten. Falls die Aus­lösestromstärke von dem für eine Fehlerstromart zulässigen Aus­löseintervall abweicht, erfolgt die Einstellung für die Fehler­stromart, bei der eine Abweichung auftritt, so, daß mit einem Impuls abmagnetisiert wird, dessen Anfangsamplitude im Vergleich zur ursprünglichen Anfangsamplitude dann höher ist, wenn die Auslösestromstärke aus dem Auslöseintervall oben herausfällt. Andernfalls wird zunächst aufmagnetisiert und danach mit einem Impuls mit niedrigerer Anfangsamplitude abmagnetisiert. Hierauf führt man für alle zu berücksichtigenden Fehlerstromarten erneut Messungen durch, worauf erforderlichenfalls weitere Einstellun­gen erfolgen, bei denen die zuletzt ermittelte Anfangsamplitude als Basis dient.According to the invention, the described object is achieved by a method according to claim 1. Thereafter, magnetization is carried out with a pulse of the same magnetic field direction and demagnetized in a pulse from an alternating magnetic field with a falling amplitude. For several types of fault current, for example alternating current, pulse current and smooth direct fault current, the procedure is such that the triggering of the holding magnet release occurs approximately in the middle of the triggering interval of the triggering current that is permissible for a first type of fault current. This is the tripping current for the other errors current types determined and recorded. If the tripping current deviates from the tripping interval permitted for a type of residual current, the setting for the type of residual current at which a deviation occurs is made in such a way that magnetization is performed with a pulse whose initial amplitude is higher compared to the original initial amplitude when the tripping current from the Trigger interval falls out at the top. Otherwise it is magnetized first and then demagnetized with a pulse with a lower initial amplitude. Thereupon, measurements are carried out again for all types of residual current to be taken into account, whereupon further settings are made if necessary, based on the last determined initial amplitude.

Zum Aufmagnetisieren und zum Abmagnetisieren kann ein marktüb­liches Impulsmagnetisiergerät eingesetzt werden.A commercially available pulse magnetizing device can be used for magnetizing and demagnetizing.

Eine vorteilhafte Einrichtung zur Durchführung des erfindungsge­mäßen Verfahrens besteht darin, daß bei einem durch Rechner ge­steuerten Impulsmangetisiergerät zu einer Charge von Haltemagnet­auslösern für die Permanentmagnete die Anfangsamplituden der Impulse zum Abmagnetisieren gespeichert werden, für die die Auslösungen der Haltemagnetauslöser im geforderten Auslösein­tervall liegen.An advantageous device for performing the method according to the invention is that in a computer-controlled pulse management device for a batch of holding magnet triggers for the permanent magnets, the initial amplitudes of the pulses for demagnetizing are stored, for which the tripping of the holding magnet releases is within the required trigger interval.

Die Speicherung der ermittelten Anfangsamplituden der Abmagne­tisierungsimpulse ermöglicht eine einfache Qualitätsüberwachung der Baugruppen im Auslösekreis, wie z.B. des Summenstromwandlers. Darüberhinaus bilden die abgespeicherten Werte einen Erfahrungs­schatz, der je Gerätetype eine schnellere und leichtere Justie­rung ermöglicht.The storage of the determined initial amplitudes of the demagnetization pulses enables simple quality monitoring of the modules in the trip circuit, e.g. of the total current transformer. In addition, the stored values form a wealth of experience that enables faster and easier adjustment for each device type.

Es wird also eine voll rechnergesteuerte Justierung ohne Ein­griff durch Bedienpersonal ermöglicht.Fully computer-controlled adjustment is therefore made possible without intervention by operating personnel.

Die Erfindung soll nun anhand eines in der Zeichnung grob schematisch wiedergegebenen Ausführungsbeispiels näher erläu­tert werden.The invention will now be explained in more detail using an exemplary embodiment shown roughly schematically in the drawing.

Am Meßplatz 1 zwischen den Polschuhen eines Elektromagneten 2 kann ein zu justierender Haltemagnetauslöser angeordnet werden. Hierbei ist der Permanentmagnet mit seiner Polarisationsrichtung in Richtung des Feldes des Elektromagneten 2 auszurichten. Die Erregerspulen 3 des Elektromagneten 2 erhalten Stromimpulse über die Leitung 4 von einer Magnetisiervorrichtung 5, die von einem Rechner 6 über die Steuerleitung 7 gesteuert wird. Der Meßplatz 1 ist dafür ausgelegt, einen Fehlerstromschutzschalter aufzunehmen und anschließen zu können sowie die Fehlerstrom­stärke zu erfassen, bei der der Haltemagnetauslöser des Fehler­stromschutzschalters anspricht. Die gemessenen und erfaßten Werte werden über die Leitung 8 für Meßwerterfassung dem Pro­zessor 6 zugeführt. Die Zeichnung gibt den prinzipiellen Auf­bau eines geeigneten Impulsmagnetisierers wieder, mit dem das erfindungsgemäße Verfahren durchgeführt werden kann.At the measuring station 1 between the pole pieces of an electromagnet 2, a holding magnet release to be adjusted can be arranged. The permanent magnet is to be aligned with its direction of polarization in the direction of the field of the electromagnet 2. The excitation coils 3 of the electromagnet 2 receive current pulses via the line 4 from a magnetizing device 5, which is controlled by a computer 6 via the control line 7. Measuring station 1 is designed to accept and connect a residual current circuit breaker and to record the residual current at which the magnetic release of the residual current circuit breaker responds. The measured and recorded values are fed to processor 6 via line 8 for data acquisition. The drawing shows the basic structure of a suitable pulse magnetizer with which the method according to the invention can be carried out.

Das Abmagnetisieren ermöglicht, sehr genau zu justieren und führt zu einem sehr stabilen Magnetisierungszustand. Dadurch wird der Permanentmagnet unempfindlich gegen äußere Einflüsse, wie Temperatur oder Magnetfelder. Bei einem Fehlerstromschutz­schalter mit elektronischen Bauelementen im Auslösekreis kann man diese beim Justieren vor Spannungsspitzen schützen, wie sie beim Auf- und Abmagnetisieren induziert werden, wenn dem Fehlerstromschutzschalter primärseitig eine Kurzschlußwindung vorgeschaltet wird.Demagnetizing enables very precise adjustment and leads to a very stable magnetization state. This makes the permanent magnet insensitive to external influences such as temperature or magnetic fields. In the case of a residual current circuit breaker with electronic components in the tripping circuit, these can be protected against voltage peaks during adjustment, such as are induced during magnetization and demagnetization, if a short circuit turn is connected upstream of the residual current circuit breaker.

Als weitere Schutzmethoden eignet sich eine Vorgehensweise, bei der der Summenstromwandler während des Auf- und Abmagnetisierens durch einen ausreichend hohen glatten Gleichstrom in der Pri­märwindung magnetisch gesättigt wird.A procedure in which the summation current transformer is magnetically saturated by a sufficiently high smooth direct current in the primary winding during magnetization and demagnetization is suitable as further protection methods.

Claims (5)

1. Verfahren zum Justieren von Haltemagnetauslösern für Fehler­stromschutzschalter, wonach dessen Permanentmagnet in seiner Feldstärke auf einen Sollwert eingestellt wird, indem zunächst Aufmagnetisiert und anschließend kontrolliert abmagnetisiert wird, dadurch gekennzeichnet,
- daß das Aufmagnetisieren mit einem Impuls gleicher magneti­scher Feldrichtung, das Abmagnetisieren in einem Impuls aus einem Wechselmagnetfeld mit fallender Amplitude erfolgt,
- und daß für mehrere Fehlerstromarten, beispielsweise Wechsel­strom, Pulsstrom und glatter Gleichfehlerstrom, so vorgegangen wird, daß zunächst die Auslösung des Haltemagnetauslösers etwa in der Mitte des für eine erste Fehlerstromart zulässigen Aus­löseintervalls der Auslösestromstärke eintritt, daß hierauf die Auslösestromstärke für die weiteren Fehlerstromarten fest­gestellt und festgehalten werden
- und daß im Fall der Abweichung der Auslösestromstärke von dem für eine Fehlerstromart zulässigen Auslöseintervall die Ein­stellung für eine Fehlerstromart, bei der eine Abweichung auf­tritt, so wiederholt wird, daß mit einem Impuls abmagnetisiert wird, dessen Anfangsamplitude, verglichen mit der ursprüng­lichen Anfangsamplitude, erhöht ist, falls die Auslösestrom­stärke aus dem Auslöseintervall oben herausfällt und die anderenfalls nach zunächst vollem Aufmagnetisieren mit einem Impuls abmagnetisiert wird, dessen Anfangsamplitude, ver­glichen mit der ursprünglichen Anfangsamplitude, erniedrigt ist,
- und daß hierauf für alle zu berücksichtigenden Fehlerstrom­arten erneut Messungen durchgeführt werden, worauf erforder­lichenfalls weitere Einstellungen erfolgen, bei denen die zuletzt ermittelte Anfangsamplitude als Basis dient.1. A method for adjusting holding magnet triggers for residual current circuit breakers, according to which the permanent magnet of its field strength is set to a desired value by first magnetizing and then demagnetizing in a controlled manner, characterized in that
that the magnetization with a pulse of the same magnetic field direction, the demagnetization in a pulse from an alternating magnetic field with falling amplitude,
- And that for several types of fault current, for example alternating current, pulse current and smooth direct fault current, the procedure is such that first the triggering of the holding magnet release occurs approximately in the middle of the trigger interval of the trigger current strength permissible for a first type of fault current, that the triggering current strength for the other types of fault current is then determined and be held
- And that in the event of a deviation of the tripping current from the tripping interval permissible for a fault current type, the setting for a fault current type in which a deviation occurs is repeated so that magnetization is carried out with a pulse whose initial amplitude is increased compared to the original initial amplitude , if the tripping current falls outside the tripping interval above and which is otherwise demagnetized after an initial full magnetization with a pulse whose initial amplitude is reduced compared to the original initial amplitude,
- And that measurements are then carried out again for all types of fault current to be taken into account, whereupon further settings are made, if necessary, based on the last determined initial amplitude. 2. Verfahren nach Anspruch 1, dadurch gekenn­zeichnet, daß zum Aufmagnetisieren und zum Abmagne­tisieren ein Impulsmagnetisiergerät eingesetzt wird.2. The method according to claim 1, characterized in that a pulse magnetizer is used for magnetizing and demagnetizing. 3. Verfahren nach Anspruch 1, dadurch gekenn­zeichnet, daß bei einem Fehlerstromschutzschalter mit elektronischen Bauelementen im Auslösekreis primärseitig zum Summenstromwandler während des Auf- und Abmagnetisierens eine Kurzschlußwindung angeordnet wird.3. The method according to claim 1, characterized in that in a residual current circuit breaker with electronic components in the trip circuit on the primary side to the summation current transformer during the up and down magnetization, a short circuit turn is arranged. 4. Verfahren nach Anspruch 1, dadurch gekenn­zeichnet, daß bei einem Fehlerstromschutzschalter mit elektronischen Bauelementen im Auslösekreis, sekundärsei­tig zum Summenstromwandler, der Summenstromwandler während des Auf- und Abmagnetisierens durch einen glatten Gleichstrom magnetisch gesättigt wird.4. The method according to claim 1, characterized in that in a residual current circuit breaker with electronic components in the trip circuit, on the secondary side to the summation current transformer, the summation current transformer is magnetically saturated by a smooth direct current during the up and down magnetization. 5. Einrichtung zur Durchführung des Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß bei einem durch Rechner gesteuerten Impulsmagnetisiergerät zu einer Charge von Haltemagnetauslösern die Anfangsamplituden der Impulse zum Abmagnetisieren gespeichert werden, für die die Auslösungen der Haltemagnetauslöser im Auslöseintervall liegen.5. A device for performing the method according to claim 1, characterized in that in a computer-controlled pulse magnetizer for a batch of holding magnet triggers, the initial amplitudes of the pulses for demagnetizing are stored, for which the releases of the holding magnet releases are in the release interval.
EP88114371A 1987-09-15 1988-09-02 Method and device for adjusting a trip device with a permanent magnet Expired - Lifetime EP0307736B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88114371T ATE100965T1 (en) 1987-09-15 1988-09-02 METHOD AND DEVICE FOR ADJUSTING HOLDING MAGNETIC RELEASES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3730974 1987-09-15
DE3730974 1987-09-15

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EP0307736A1 true EP0307736A1 (en) 1989-03-22
EP0307736B1 EP0307736B1 (en) 1994-01-26

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EP88114371A Expired - Lifetime EP0307736B1 (en) 1987-09-15 1988-09-02 Method and device for adjusting a trip device with a permanent magnet

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AT (1) ATE100965T1 (en)
DE (1) DE3887412D1 (en)
ES (1) ES2048181T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016110979A1 (en) 2016-06-15 2017-12-21 Johnson Electric Germany GmbH & Co. KG Method for adjusting a magnetic release

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE952289C (en) * 1954-03-24 1956-11-15 Western Electric Co Device for the automatic setting of the permanent premagnetization of relays
EP0117250A1 (en) * 1983-01-20 1984-08-29 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Schrems-Eugenia Niederösterreich Method of adjusting a trip device with permanent magnet
DE3421575A1 (en) * 1984-06-09 1985-12-12 Erich Dr.-Ing. 5300 Bonn Steingroever Electrical pulse generator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE952289C (en) * 1954-03-24 1956-11-15 Western Electric Co Device for the automatic setting of the permanent premagnetization of relays
EP0117250A1 (en) * 1983-01-20 1984-08-29 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Schrems-Eugenia Niederösterreich Method of adjusting a trip device with permanent magnet
DE3421575A1 (en) * 1984-06-09 1985-12-12 Erich Dr.-Ing. 5300 Bonn Steingroever Electrical pulse generator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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ES2048181T3 (en) 1994-03-16
DE3887412D1 (en) 1994-03-10
ATE100965T1 (en) 1994-02-15
EP0307736B1 (en) 1994-01-26

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