EP0561485B1 - High speed disconnecting switch - Google Patents

High speed disconnecting switch Download PDF

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Publication number
EP0561485B1
EP0561485B1 EP93250082A EP93250082A EP0561485B1 EP 0561485 B1 EP0561485 B1 EP 0561485B1 EP 93250082 A EP93250082 A EP 93250082A EP 93250082 A EP93250082 A EP 93250082A EP 0561485 B1 EP0561485 B1 EP 0561485B1
Authority
EP
European Patent Office
Prior art keywords
contact
disconnector
winding
fact
accordance
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 - Lifetime
Application number
EP93250082A
Other languages
German (de)
French (fr)
Other versions
EP0561485A1 (en
Inventor
Horst Dr.-Ing. Gerlach
Anke Dr.-Ing. Ekkehard
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.)
ELPRO BAHNSTROMANLAGEN GMBH
Original Assignee
Elpro AG
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Filing date
Publication date
Application filed by Elpro AG filed Critical Elpro AG
Publication of EP0561485A1 publication Critical patent/EP0561485A1/en
Application granted granted Critical
Publication of EP0561485B1 publication Critical patent/EP0561485B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/222—Power arrangements internal to the switch for operating the driving mechanism using electrodynamic repulsion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2025—Bridging contacts comprising two-parallel bridges
    • H01H2001/2033—Bridging contacts comprising two-parallel bridges with a contact bridge on both opposite sides of a fixed contact pair, each contact bridge being moved to close or open the circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/222—Power arrangements internal to the switch for operating the driving mechanism using electrodynamic repulsion
    • H01H2003/225—Power arrangements internal to the switch for operating the driving mechanism using electrodynamic repulsion with coil contact, i.e. the movable contact itself forms a secondary coil in which the repulsing current is induced by an operating current in a stationary coil
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock

Definitions

  • the invention relates to a disconnector for switchgear, in particular for traction current systems with commutation devices.
  • circuit breakers and disconnectors which are designed for a high switching speed, work with spring-loaded actuators and complicated special solutions for the unlocking mechanisms. Apart from their complexity, these are also not fast enough for the intended field of application in railway power systems with electronic commutation devices, in which a fast disconnection of a damaged route exit and possibly a fast restart are necessary. A considerable part of the entire switching process must already be used for unlocking.
  • Switching devices for self-switches and current limiting switches with a separate drive device, contact arrangement and separate switch-on device are also known with an electrodynamic drive, so-called Thomson drive, see e.g. DE-A 36 42 283.
  • the Thomson drive works with a coil and an opposite disc made of conductive material, in which when the coil is excited, e.g. through a capacitor discharge, a current is induced. The opposing currents exert a force on the disk which is connected to a contact. The force is very quick.
  • a separate unlocking mechanism may be dispensed with.
  • the invention is based on the object of realizing a fast disconnector with a low moving mass, without an unlocking system when disconnecting, and a locking device which is as wear-free and very fast as possible after the disconnection.
  • the catching device In the event of an immediate, very rapid return movement of the contact plate, the catching device is thus fully operational again in order to securely lock the moving parts.
  • FIG. 1 shows the disconnector according to the invention, the two contact plates 1 being connected in parallel.
  • the electrical connection to a connector 3 is established via contact lamellae 2.
  • the electrical connection is made from the connector 4 via the contact lamellae 5 to the contact plates 1, so that the current path is established in the direction of the arrow and thus a contact bridge is formed.
  • the winding 6 is excited via a capacitor discharge device (not shown), so that the two contact plates 1 are repelled very quickly in opposite directions in the axial direction until the iron disks 7 firmly connected to the contact plates 1 abut the permanent-magnet capture devices.
  • the permanent magnetic capture device advantageously consists of a permanent magnet 8, which is provided with an unlocking winding 13 and is connected to the housing 12 via a damping buffer 9 and the damping disk 10.
  • the winding 6 is arranged in a winding support which is arranged between the connecting pieces 3 and 4.
  • the connectors 3 and 4 are advantageously cast together with the winding 6.
  • the moving mass essentially the contact plate 1 and the iron disk 7 and part of the contact pressure spring 11, are braked via the damping buffer 9 and the damping disk 10.
  • the contact pressure spring 11 is used with a suitable spring preload, which is selected so that on the one hand it ensures the necessary contact pressure force of the contact plate 1 when the disconnector is closed and on the other hand enables the iron disk 7 to be securely locked on the permanent magnet 8 when the disconnector is open.
  • the contact pressure spring 11 is supported on the housing 12 which is screwed to the connecting pieces 3 and 4.
  • the lock is released to close the circuit breaker by means of a short current surge into the unlocking winding 13, which is arranged within the permanent magnet 8, whereby the holding force of the permanent magnet 8 is partially compensated, so that the spring force of the contact pressure spring 11 moves the contact plate 1 again in the direction of the connecting pieces 3 and 4 and thus closes the disconnector again.
  • the simple switching path creates a double opening distance.
  • the contact plate does not require any stranded wires.
  • the mode of operation is such that a capacitor discharge takes place via the windings 22 and 23 lying in series and thus the contact plates 1 are repelled, then are caught by the means described in FIG. 1 and remain securely locked.
  • the winding 6 or the windings 22 and 23 are designed in a rectangular or circular shape in FIG. 1 and FIG.
  • a reaction-free design of the disconnector is achieved by the counter-movement of the contact plates, i.e. that no forces can act externally.
  • the contact separation takes place very quickly and without an unlocking mechanism. Locking in the open state takes place without mechanical locking parts and is therefore also very quick.

Abstract

The known high switching speed power and disconnecting switches, which operate using a spring-force drive, are unsuitable and not fast enough for the intended application for railway power systems. For this purpose, it is necessary to implement a high-speed interruptor switch having a low moved mass, without any unlocking system during disconnection and having a locking device, which is free of wear and is very fast, after disconnection. The interruptor switch according to the invention has two contact plates (1) which are arranged opposite one another, move axially and each support a magnetically conductive disc (7). The latter are pressed against a contact switching piece by means of in each case one contact-pressure spring (11). The contact switching piece supports a winding (6) whose excitation moves the contact plates (1) away from one another. The contact plates (1) are moved towards a permanent-magnet catchment device which locks the contact plate (1) in the open position and is provided with a demagnetising winding (13). The disconnector switch is provided especially for railway power systems having electronic commutation devices, in the case of which rapid disconnection of a damaged section outlet, and possibly rapid switching-on again, are required. Furthermore, it is suitable for all tasks requiring fast contact disconnection. <IMAGE>

Description

Die Erfindung betrifft einen Trennschalter für Schaltanlagen, insbesondere für Bahnstrom-Anlagen mit Kommutierungseinrichtungen.The invention relates to a disconnector for switchgear, in particular for traction current systems with commutation devices.

Die bekannten Leistungs- und Trennschalter, die für eine hohe Schaltgeschwindigkeit ausgelegt sind, arbeiten mit Federspeicherantrieb und komplizierten Speziallösungen für die Entriegelungsmechanismen. Für das angestrebte Anwendungsgebiet bei Bahnstromanlagen mit elektronischen Kommutierungseinrichtungen, bei denen eine schnelle Abtrennung eines havarierten Streckenabgangs und ggf. eine schnelle Wiedereinschaltung nötig sind, sind diese, abgesehen von ihrer Kompliziertheit, auch nicht schnell genug. Ein erheblicher Teil des gesamten Schaltvorganges muß nämlich bereits für die Entriegelung aufgewendet werden.The well-known circuit breakers and disconnectors, which are designed for a high switching speed, work with spring-loaded actuators and complicated special solutions for the unlocking mechanisms. Apart from their complexity, these are also not fast enough for the intended field of application in railway power systems with electronic commutation devices, in which a fast disconnection of a damaged route exit and possibly a fast restart are necessary. A considerable part of the entire switching process must already be used for unlocking.

Es sind auch mit elektrodynamischem Antrieb, sogenanntem Thomson-Antrieb, versehene Schalteinrichtungen für Selbstschalter und Strombegrenzungsschalter mit gesonderter Antriebseinrichtung, Kontaktanordnung und gesonderter Einschalteinrichtung bekannt, siehe z.B. DE-A 36 42 283. Der Thomson-Antrieb arbeitet mit einer Spule und einer gegenüberliegenden Scheibe aus leitfähigem Material, in der bei Erregung der Spule, z.B. durch eine Kondensatorentladung, ein Strom induziert wird. Die gegeneinandergerichteten Ströme bewirken eine Kraft auf die Scheibe, die mit einem Kontakt in Verbindung steht. Die Kraftwirkung erfolgt sehr schnell. Auf einen gesonderten Entriegelungsmechanismus kann ggf. verzichtet werden.Switching devices for self-switches and current limiting switches with a separate drive device, contact arrangement and separate switch-on device are also known with an electrodynamic drive, so-called Thomson drive, see e.g. DE-A 36 42 283. The Thomson drive works with a coil and an opposite disc made of conductive material, in which when the coil is excited, e.g. through a capacitor discharge, a current is induced. The opposing currents exert a force on the disk which is connected to a contact. The force is very quick. A separate unlocking mechanism may be dispensed with.

Abgesehen davon, daß bei diesen bekannten Schalteinrichtungen viele Bauteile notwendig sind, sind sie von ihrem Aufbau her für den angegebenen Zweck, z.B. für eine schnelle Wiedereinschaltung, noch nicht geeignet.Apart from the fact that many components are necessary in these known switching devices, their structure is not yet suitable for the stated purpose, for example for a quick reclosure.

Der Erfindung liegt die Aufgabe zugrunde, einen schnellen Trennschalter mit geringer bewegter Masse, ohne Entriegelungssystem beim Auftrennen sowie einer möglichst verschleißfreien und sehr schnellen Verriegelungseinrichtung nach dem Auftrennen zu realisieren.The invention is based on the object of realizing a fast disconnector with a low moving mass, without an unlocking system when disconnecting, and a locking device which is as wear-free and very fast as possible after the disconnection.

Erfindungsgemäß wird die Aufgabe durch einen Trennschalter mit folgenden Merkmalen gelöst:

  • durch die Erregung einer Wicklung, z.B. durch eine Kondensatorentladung, werden zwei leichte Kontaktplatten, die jeweils einer Spulenseite gegenüberliegend angeordnet sind, in Gegenrichtung gegen die Kraft jeweils einer Kontaktanpreßfeder abgestoßen,
  • jede Kontaktplatte trägt eine Eisenscheibe, die gegen eine Einfangeinrichtung mit einem Permanentmagneten anläuft und die dämpfendorweise die Eisenscheibe mitsamt der Kontaktplatte und die Kontaktanpreßfeder verriegelt,
  • diese Verriegelung kann mittels eines Stromstoßes in eine induktivitätsarme Entriegelungswicklung aufgehoben werden.
According to the invention, the object is achieved by a disconnector with the following features:
  • by exciting a winding, for example by a capacitor discharge, two light contact plates, which are each arranged opposite one coil side, are repelled in the opposite direction against the force of a contact pressure spring,
  • Each contact plate carries an iron disk, which runs against a capturing device with a permanent magnet and which locks the iron disk together with the contact plate and the contact pressure spring in a damping manner.
  • this locking can be released by means of a current surge in a low-inductance unlocking winding.

Im Falle einer sofortigen, sehr schnellen Rückbewegung der Kontaktplatte ist die Einfangeinrichtung somit bereits wieder voll arbeitsfähig, um die bewegten Teile sicher zu arretieren.In the event of an immediate, very rapid return movement of the contact plate, the catching device is thus fully operational again in order to securely lock the moving parts.

Weitere ausgestaltende Merkmale sind den Unteransprüchen zu entnehmen.Further design features can be found in the subclaims.

Die Erfindung soll nachstehend an zwei Ausführungsbeispielen erläutert werden. In den zugehörigen Zeichnungen zeigen

Fig.1
eine Prinzipdarstellung des erfindungsgemäßen Trennschalters mit der Parallelschaltung von zwei Kontaktplatten, die ohne Anschlußlitzen ausgeführt werden können,
Fig.2
den Trennschalter mit der Reihenschaltung von zwei Kontaktplatten, die mit Anschlußlitzen ausgeführt sind.
The invention will be explained below using two exemplary embodiments. Show in the accompanying drawings
Fig. 1
2 shows a basic illustration of the disconnector according to the invention with the parallel connection of two contact plates, which can be implemented without connecting leads,
Fig. 2
the disconnector with the series connection of two contact plates, which are designed with connecting leads.

Fig.1 zeigt den erfindungsgemäßen Trennschalter, wobei die beiden Kontaktplatten 1 parallel geschaltet sind. Über Kontaktlamellen 2 wird die elektrische Verbindung zu einem Anschlußstück 3 hergestellt. In gleicher Weise wird die elektrische Verbindung vom Anschlußstück 4 über die Kontaktlamellen 5 zu den Kontaktplatten 1 hergestellt, so daß der Stromweg in der gekennzeichneten Pfeilrichtung hergestellt und somit eine Kontaktbrücke gebildet ist. Über eine nicht dargestellte Kondensatorentladeeinrichtung wird die Wicklung 6 erregt, so daß die beiden Kontaktplatten 1 in axialer Richtung sehr schnell gegenläufig abgestoßen werden, bis die mit den Kontaktplatten 1 fest verbundenen Eisenscheiben 7 an den permanentmagnetischen Einfangeinrichtungen anstoßen. Die permanentmagnetische Einfangeinrichtung besteht vorteilhafterweise aus einem Permanentmagneten 8, der mit einer Entriegelungswicklung 13 versehen ist und über einen Dämpfungspuffer 9 sowie die Dämpfungsscheibe 10 mit dem Gehäuse 12 verbunden ist. Die Wicklung 6 ist in einem Wicklungsträger angeordnet, der zwischen den Anschlußstücken 3 und 4 angeordnet ist. Vorteilhaft werden die Anschlußstücken 3 und 4 zusammen mit der Wicklung 6 vergossen.1 shows the disconnector according to the invention, the two contact plates 1 being connected in parallel. The electrical connection to a connector 3 is established via contact lamellae 2. In the same way, the electrical connection is made from the connector 4 via the contact lamellae 5 to the contact plates 1, so that the current path is established in the direction of the arrow and thus a contact bridge is formed. The winding 6 is excited via a capacitor discharge device (not shown), so that the two contact plates 1 are repelled very quickly in opposite directions in the axial direction until the iron disks 7 firmly connected to the contact plates 1 abut the permanent-magnet capture devices. The permanent magnetic capture device advantageously consists of a permanent magnet 8, which is provided with an unlocking winding 13 and is connected to the housing 12 via a damping buffer 9 and the damping disk 10. The winding 6 is arranged in a winding support which is arranged between the connecting pieces 3 and 4. The connectors 3 and 4 are advantageously cast together with the winding 6.

Über die Dämpfungspuffer 9 und die Dämpfungsscheibe 10 wird die sich bewegende Masse, im wesentlichen die Kontaktplatte 1 und die Eisenscheibe 7 und ein Teil der Kontaktandruckfeder 11, abgebremst. Die Kontaktandruckfeder 11 wird mit einer geeigneten Federvorspannung eingesetzt, die so gewählt ist, daß sie einerseits die notwendige Kontaktanpreßkraft der Kontaktplatte 1 bei geschlossenem Trennschalter gewährleistet und andererseits eine sichere Arretierung der Eisenscheibe 7 am Permanentmagneten 8 bei geöffnetem Trennschalter ermöglicht. Die Kontaktanpreßfeder 11 stützt sich dabei auf das Gehäuse 12 ab, welches mit den Anschlußstücken 3 und 4 fest verschraubt ist. Das Freimachen der Verriegelung zum Schließen des Trennschalters erfolgt über einen kurzen Stromstoß in die Entriegelungswicklung 13, die innerhalb des Permanentmagneten 8 angeordnet ist, wodurch die Haltekraft des Permanentmagneten 8 teilweise kompensiert wird, so daß die Federkraft der Kontaktandruckfeder 11 die Kontaktplatte 1 wieder in Richtung der Anschlußstücke 3 und 4 bewegt und somit den Trennschalter wieder schließt.The moving mass, essentially the contact plate 1 and the iron disk 7 and part of the contact pressure spring 11, are braked via the damping buffer 9 and the damping disk 10. The contact pressure spring 11 is used with a suitable spring preload, which is selected so that on the one hand it ensures the necessary contact pressure force of the contact plate 1 when the disconnector is closed and on the other hand enables the iron disk 7 to be securely locked on the permanent magnet 8 when the disconnector is open. The contact pressure spring 11 is supported on the housing 12 which is screwed to the connecting pieces 3 and 4. The lock is released to close the circuit breaker by means of a short current surge into the unlocking winding 13, which is arranged within the permanent magnet 8, whereby the holding force of the permanent magnet 8 is partially compensated, so that the spring force of the contact pressure spring 11 moves the contact plate 1 again in the direction of the connecting pieces 3 and 4 and thus closes the disconnector again.

Bei der Öffnung der Kontaktstellen entsteht durch den einfachen Schaltweg eine zweifache Öffnungsstrecke. Die Kontaktplatte benötigt bei dieser Variante keine Anschlußlitzen.When the contact points open, the simple switching path creates a double opening distance. In this variant, the contact plate does not require any stranded wires.

Fig.2 zeigt eine Variante der Anordnung mit der Reihenschaltung der zwei Kontaktplatten 1, wobei die elektrische Verbindung über die Anschlußlitzen 14, 16 zu den Anschlußringen 15, 17 hergestellt wird, die ihrerseits fest mit den Anschlußstücken 3, 4 verbunden sind. Somit ergibt sich, bei geschlossenem Trennschalter, ein Stromweg vom Anschlußstück 3 zum Anschlußring 17 durch die Anschlußlitzen 16 zur ersten Kontaktplatte 1, über die Kontaktlamellen 18, durch das Leitstück 19 zu den anderen Kontaktlamellen 20, zur zweiten Kontaktplatte 1 und über die Anschlußlitzen 14, den Anschlußring 15 hin zum Anschlußstück 4 . Das Leitstück 19 ist eingelagert in einen Wicklungsträger 21, der die beiden scheibenförmigen Wicklungen 22 und 23 trägt.2 shows a variant of the arrangement with the series connection of the two contact plates 1, the electrical connection being made via the connecting leads 14, 16 to the connecting rings 15, 17, which in turn are firmly connected to the connecting pieces 3, 4. Thus, when the disconnector is closed, there is a current path from the connecting piece 3 to the connecting ring 17 through the connecting strands 16 to the first contact plate 1, via the contact blades 18, through the guide piece 19 to the other contact blades 20, to the second contact plate 1 and via the connecting strands 14, the connecting ring 15 to the connecting piece 4th The guide piece 19 is embedded in a winding support 21 which carries the two disk-shaped windings 22 and 23.

Die Wirkungsweise ist derart, daß eine Kondensatorentladung über die in Reihe liegenden Wicklungen 22 und 23 erfolgt und somit die Kontaktplatten 1 abgestoßen werden, dann mit den zu Fig.1 beschriebenen Mitteln eingefangen werden und sicher arretiert bleiben. Auch bei dieser Ausführungsform ergibt sich im Trennschalter bei einem einfachen Schaltweg eine zweifache Öffnungsstrecke.The mode of operation is such that a capacitor discharge takes place via the windings 22 and 23 lying in series and thus the contact plates 1 are repelled, then are caught by the means described in FIG. 1 and remain securely locked. In this embodiment, too, there is a double opening distance in the isolating switch with a simple switching path.

Je nach der notwendigen Größe und Anordnung der Kontaktflächen sind in Fig.1 und Fig.2 die Wicklung 6 bzw. die Wicklungen 22 und 23 in Rechteck- oder Kreisform ausgeführt.Depending on the necessary size and arrangement of the contact surfaces, the winding 6 or the windings 22 and 23 are designed in a rectangular or circular shape in FIG. 1 and FIG.

Bei beiden Varianten wird ein reaktionsfreier Aufbau des Trennschalters durch die gegenläufige Bewegung der Kontaktplatten realisiert, d.h. daß nach außen keine Kräfte wirksam werden können. Die Kontakttrennung erfolgt sehr schnell und ohne einen Entriegelungsmechanismus. Die Verriegelung im geöffneten Zustand erfolgt ohne mechanische Verriegelungsteile und ist deshalb ebenfalls sehr schnell.In both versions, a reaction-free design of the disconnector is achieved by the counter-movement of the contact plates, i.e. that no forces can act externally. The contact separation takes place very quickly and without an unlocking mechanism. Locking in the open state takes place without mechanical locking parts and is therefore also very quick.

Claims (9)

  1. Disconnector with high operating speed, where operation is effected by the Thomson principle, characterized by the following features:
    - two axially moving contact plates (1) arranged opposite one another, each of which bears a magnetically permeable disk (7), are each pressed by a contact pressure spring (11) onto a contact-establishing member which,
    - the contact-making member bears a winding (6 and 22, 23) by means of whose energization the contact plates (1) are moved away from one another,
    - the movement of the contact plates (1) takes place in opposition to a permanently-magnetic capture device which is provided with a release winding (13).
  2. Disconnector in accordance with Claim 1, characterized by the fact that excitation of the winding (6 and 22,23) is effected by means of a capacitor discharge.
  3. Disconnector in accordance with Claim 1, characterized by the fact that the contact-establishing member consists of the connectors (3, 4) of the disconnector with a holder for the winding (6) interposed between them.
  4. Disconnector in accordance with Claim 1, characterized by the fact that the contact-establishing member consists of a holder for the windings (22,23) with a centrally arranged conductive connecting element.
  5. Disconnector in accordance with Claim 1, characterized by the fact that the winding (6) is encapsulated together with the connectors (3, 4).
  6. Disconnector in accordance with Claim 1, characterized by the fact that the contact pressure springs (11) are supported on the housing (12).
  7. Disconnector in accordance with Claim 1, characterized by the fact that the permanently-magnetic capture device is provided with an elastic damping pad (9).
  8. Disconnector in accordance with Claim 1 or 7, characterized by the fact that the permanently-magnetic capture device is supported on the housing (12) by means of a damping disk (10).
  9. Disconnector in accordance with Claim 1, characterized by the fact that the contact plates (1) are joined to the contact-establishing member via contact laminations (2, 5 and 18, 20).
EP93250082A 1992-03-19 1993-03-12 High speed disconnecting switch Expired - Lifetime EP0561485B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4209199 1992-03-19
DE4209199A DE4209199C2 (en) 1992-03-19 1992-03-19 Disconnector with high switching speed

Publications (2)

Publication Number Publication Date
EP0561485A1 EP0561485A1 (en) 1993-09-22
EP0561485B1 true EP0561485B1 (en) 1995-12-20

Family

ID=6454674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93250082A Expired - Lifetime EP0561485B1 (en) 1992-03-19 1993-03-12 High speed disconnecting switch

Country Status (3)

Country Link
EP (1) EP0561485B1 (en)
AT (1) ATE131955T1 (en)
DE (2) DE4209199C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10058419C1 (en) * 2000-11-24 2002-06-06 Moeller Gmbh Current-limiting switch has conductor loop provided with switching current providing electrodynamic forces assisting opening movement of contact device upon overload detection
CN104810209A (en) * 2014-01-28 2015-07-29 Ls产电株式会社 Relay

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19740490C1 (en) * 1997-09-15 1999-04-15 Condor Werke Gebr Frede Gmbh & Isolating switch for interrupting the current in a conductor in the event of a short circuit or excessive current
DE19851226C2 (en) * 1998-11-06 2002-04-11 Condor Werke Gebr Frede Gmbh & disconnectors

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1071821B (en) * 1955-04-06 1959-12-24
DE1091207B (en) * 1957-07-12 1960-10-20 Siemens Ag Electrodynamic drive system, especially for electrical switches
GB1068324A (en) * 1963-05-20 1967-05-10 John Henry Waghorne Electric circuit breaker
CA916207A (en) * 1970-09-08 1972-12-05 Zajic Vladislav Disjoncteur pour courant continu a tres haute tension
GB2150352A (en) * 1983-11-25 1985-06-26 Electricity Council Circuit breaker assembly
DE3642383A1 (en) * 1986-12-12 1988-06-16 Siemens Ag Current-limiting switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10058419C1 (en) * 2000-11-24 2002-06-06 Moeller Gmbh Current-limiting switch has conductor loop provided with switching current providing electrodynamic forces assisting opening movement of contact device upon overload detection
CN104810209A (en) * 2014-01-28 2015-07-29 Ls产电株式会社 Relay

Also Published As

Publication number Publication date
EP0561485A1 (en) 1993-09-22
ATE131955T1 (en) 1996-01-15
DE4209199C2 (en) 1997-02-06
DE59301186D1 (en) 1996-02-01
DE4209199A1 (en) 1993-09-23

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