EP0231732B1 - Circuit breaker for fault and conduction current protection - Google Patents

Circuit breaker for fault and conduction current protection Download PDF

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Publication number
EP0231732B1
EP0231732B1 EP86890307A EP86890307A EP0231732B1 EP 0231732 B1 EP0231732 B1 EP 0231732B1 EP 86890307 A EP86890307 A EP 86890307A EP 86890307 A EP86890307 A EP 86890307A EP 0231732 B1 EP0231732 B1 EP 0231732B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
pin
slide
test
spring
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
EP86890307A
Other languages
German (de)
French (fr)
Other versions
EP0231732A3 (en
EP0231732A2 (en
Inventor
Alfred Nyzner
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
Original Assignee
Felten & Guilleaume Fabrik Elektrischer Apparate AG
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Filing date
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Publication of EP0231732A2 publication Critical patent/EP0231732A2/en
Publication of EP0231732A3 publication Critical patent/EP0231732A3/en
Application granted granted Critical
Publication of EP0231732B1 publication Critical patent/EP0231732B1/en
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
    • 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
    • H01H71/04—Means for indicating condition of the switching device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
    • H01H2083/045—Auxiliary switch opening testing circuit in synchronism with the main circuit
    • 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
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor
    • 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
    • H01H71/1072—Release mechanisms which are reset by opening movement of contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H01H83/226—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with differential transformer

Definitions

  • the invention relates to a residual current and line circuit breaker with a switch for a center conductor, in which the movable switching bridge of the line circuit breaker arranged in a housing part is coupled and goes with the movable contact arm of the switch for the center conductor accommodated in a further housing part via a slide guided on an intermediate wall of the housing from EP-A 0 149 441.
  • a circuit breaker with all-pole disconnection is known from DE-B 15 63 919.
  • a transmission element designed as a slide is provided, which is guided in grooves in the side walls of adjacent shell halves.
  • a disadvantage of this known circuit breaker is that the actuating parts (knee joint parts) of the circuit breaker must be designed with extensions that operate the slide.
  • a circuit breaker in which the coupling of the contactor of the circuit breaker with that of the switch for the center conductor is possible without changing the structure of the circuit breaker is known from AT-A 378 283.
  • the movable switching bridge of the circuit breaker is coupled to the movable contact of the switch for the center conductor via a slide guided on the side wall of the housing of the circuit breaker.
  • the slide has at least one projection which engages the movable contact of the switch for the center conductor and a projection which is designed as a pin and which is at the same time the bearing pin for the joint between the switching bridge and its actuating member.
  • the invention is based on the object, in a circuit breaker of the type mentioned, to use the coupling designed as a slide between the bimetallic magnetic release and arc extinguishing device equipped protected switching path and the simple unprotected switching path (switch for the center conductor) for further functions of the residual current protection.
  • the permanent magnet trigger of the residual current protection is assigned a lever which is pivotably mounted in the housing, the trigger pin of the permanent magnet trigger being present at one end of the lever and the other end of the lever in the "on" position of the switch with a spring-loaded Actuator, which has a peg assigned to the pawl support of the circuit breaker, is locked and that a peg is provided on the slide, which the actuator against the force of the associated spring when pivoting the contact arm of the switch for the center conductor in its closed position in the for a latching correct position pivoted with the lever associated with the permanent magnet release.
  • the trigger pin of the permanent magnet release is assigned a pivotably mounted reset device, which is designed as a two-armed lever, the arm of the reset device, which is assigned to the permanent magnet release, being under the action of a preferably hairpin-shaped spring, which the resettler is loaded on the trigger pin of the permanent magnet trigger and that the other arm of the resetter is lifted from the trigger pin of the permanent magnet trigger in the "on" position by a pin provided on the slide.
  • a further function of the slide is achieved, since the reset is raised by the slide when the circuit breaker is switched on in such a way that the release pin of the permanent magnet release can actuate the pawl rest. After triggering and return of the slide to the "off" position, the trigger pin of the permanent magnet release is depressed by the reset mechanism driven by the return spring.
  • one and the same pin on the slide for pivoting the actuation member is provided on the one hand and the reset on the other and the pin is arranged between an extension of the actuator and an arm of the reset.
  • the actuator in the "off" position rests against a stop fixed to the housing under the action of the spring assigned to it. This relieves the axis of the actuator and limits the pivoting range, so that moving the actuator back into the position locked with the lever is easier.
  • a residual current and line circuit breaker with a switch for a center conductor can be coupled, in which the movable switching bridge of the line circuit breaker arranged in one housing part is coupled to the movable contact arm of the switch for the center conductor accommodated in a further housing part via a slide guided on an intermediate wall of the housing.
  • a further development of the invention is based on the object, in a circuit breaker of the type mentioned, to use the coupling, designed as a slide, between the protected switching path equipped with a bimetallic magnetic release and arc extinguishing device and the simple unprotected switching path (switch for the center conductor) for further functions of the residual current protection.
  • test circuit known per se is provided with a test button, two test contacts and a test contact spring, part of the test contact spring being able to be applied to the test contact assigned to it by pressing the test button and another part of the test contact spring on one second test contact is present and is lifted from the contact by the slide when the contacts are open.
  • This function of the slide closes the test circuit known per se by means of a test contact spring which actuates two test contacts. At the same time it is ensured that a contact is only closed when the test button is pressed if the circuit breaker and thus the slide is in the position corresponding to the setting. This prevents damage to the switch, even if the test button is pressed for a long time.
  • a further embodiment of the invention is based on the object in the case of a residual current and line circuit breaker with a switch for a center conductor, in which the movable switching bridge of the line circuit breaker arranged in a housing part with the movable contact arm of the switch for the center conductor accommodated in a further housing part slider coupled to a partition wall, the slider coupling between the protected switching path equipped with bimetallic magnetic release and arc quenching device and the simple unprotected switching path (switch for the center conductor) for further functions.
  • a contact position indicator known per se is accommodated in the housing part receiving the residual current protection, which is pivotally mounted in the housing and of which one end is arranged at a window in the housing and the other end for actuating the contact position indicator with the slide is coupled.
  • the contact position indicator for example two-colored, which can be seen from the outside of the window, is actuated directly by the slide and indicates, for example by means of red and green color, the "on" or "off” position of the contact apparatus.
  • the line protection part accommodated in the housing part can have, for example, the configuration shown and described in AT-A 378 283 and EP-A1-0 149 441. It is preferred that the slide shown in the housing part shown in the drawings is coupled to the circuit breaker as described in AT-A 378 283 or EP-A1-0 149 441.
  • the permanent magnet release used in the residual current protection visible in the drawings can be, for example, the hermetically sealed holding magnet release known from EP-A2-0 154 619.
  • the coupling of the slide with the line protection part is preferred in the manner described in AT-PS 378 283, the invention is not limited to this embodiment, but any other possibility of coupling the slide with the release mechanism or the switching bridge of the line protection switch, whether this is done directly or indirectly can be used within the scope of the invention.
  • the exemplary embodiment of the circuit breaker according to the invention described below is a two-module-wide RCD which is independent of the mains voltage and can be operated with a single switch.
  • the switch has a bimetal magnet (not shown) Tripping and arc extinguishing device equipped protected switching path (miniature circuit breaker) and a simple unprotected switching path (switch for the center conductor), the movable switching bridges of both switching paths are coupled to each other by a coupling.
  • the residual current protection includes a permanent magnet release which receives the energy required for tripping in the event of a residual current through the differential transformer (total current transformer) through which both switching paths flow.
  • a permanent magnet release 2 is arranged in a housing 1 and, in the event of a fault current, receives the energy required for triggering through the differential converter 5 through which both switching paths 3 and 4 flow.
  • the switching path 3 arranged in the visible housing part is formed by the center conductor (N conductor) and contains a contact apparatus with a movable switching bridge 6.
  • the movable switching bridge 6 is coupled directly or indirectly via a coupling designed as a slide 7 to the non-visible, movable switching bridge of the circuit breaker, so that the movable switching bridge 6 follows the movements of the switching bridge of the circuit breaker.
  • a lever 8 is arranged pivotably about a bearing pin 36, one end 11 of which is assigned to the release pin 9 of the permanent magnet release 2.
  • the other end 12 of the lever has a nose-like projection 13, in which, in the "on" position (cf. FIG. 2), an extension 15 of an actuating element 14, which is pivotably mounted in the switch about an axis 16, comes into contact .
  • the latching of the nose-like projection 13 with the extension 15 prevents the actuating member 14 from pivoting under the action of the trigger spring 17 assigned to it.
  • the actuating member 14 has a pin 18 which penetrates the intermediate wall between the two housing parts and which, in the event of tripping, acts on the latch support (not visible) of the circuit breaker, so that its tripping mechanism is actuated.
  • the actuator 14 by a provided on the slide 7 pin 19 which engages an extension 20 of the actuator 14 in the "off” position against the action of the release spring 17 in the for locking with the Lever 8 swiveled in the correct position.
  • the pin 19 on the slide 7 is further assigned an end of a pivotable about a bearing pin 10 reset 21 for the permanent magnet release 2.
  • This reset means 21 is under the action of a return spring 22 which presses the end 23 of the reset means 21 assigned to the release pin 9 of the permanent magnet release 2 against the release pin 9 when the switch is in the “off” position.
  • the reset 21 is pivoted by the pin 19 on the slide 7 against the action of the return spring 22 such that the end 23 of the reset 21 does not abut the release pin 9 of the permanent magnet release 2.
  • the lever 8 is held in contact with the release pin 9 of the permanent magnet release 2 by the support spring 24 shown in FIG. 3.
  • a contact position indicator 26 which can be pivoted about a bearing journal 25 can also be provided.
  • This contact position indicator 26 can be seen from the outside through a window 27, with a field colored green in the "off” position shown in FIG. 1 and a red field in the "on” position shown in FIG. 2 from the outside through the window 27 colored field of the contact position indicator 26 can be seen.
  • the contact position indicator 26 is actuated by the slide 7 by means of an actuating pin 28 which engages in a slot 28 'of the contact position indicator 26 which is open on one side in the manner of a "pin-slot” coupling. It can be seen that due to this arrangement, when the slide 7 is moved back and forth, the contact position indicator 26 pivots back and forth.
  • a test circuit can also be provided in the housing part of the RCD / MCB according to the invention that receives the residual current protection and is visible in the drawings.
  • This test circuit has two test contacts 29 and 39 and an essentially U-shaped bent test contact spring 30 held in the housing.
  • One leg 31 of the test contact spring 30 can be brought into contact with the test contact 29 using a test button 32.
  • the other leg 33 of the test contact spring 30 is in the "on" position (Fig. 2), i.e. when the movable switching bridges of both switching sections are closed, at test contact 39.
  • the leg 33 of the test contact spring 30 is received between two actuating pins 34 and 35 of the slide 7.
  • the leg 33 is lifted by the actuating pin 35 from the test contact 39 when the switch is in the "off" position (FIG. 1).
  • the movement of the slide 7 is also used to interrupt the test circuit as soon as it is triggered - for whatever reason, e.g. by pressing the test button 32 -. This prevents the switch from being damaged if the test circuit is closed too long.
  • the reset 21 is first released and can reset the permanent magnet release 2 by depressing the release pin 9 under the action of the return spring 22.
  • the pin 19 on the slide 7 comes into contact with the extension 20 of the actuator 14 during its upward movement, so that it compresses the trigger spring 17 into a new latching with the lever 8, which is now under the action of the support spring 24 again has pivoted back, swiveled prepared position.
  • leg 33 of the test contact spring 30 was lifted by the actuating pin 35 of the slide 7 from the test contact 39 assigned to it, so that the test circuit cannot be closed despite actuation of the test button 32 and contact of the leg 31 of the test contact spring 30 with the test contact 29.
  • the contact position indicator 26 has been pivoted under the action of the actuating pin 28, so that its green field is now visible through the window 27.
  • the switch By actuating the ON button 38, the switch can be moved back to the "ON" position shown in FIG. 2.
  • a "free trip” is also possible with the FIILS switch. This is shown in Figure 4.
  • the switch button 38 is not yet fully in its “on” position, but the movable switching bridge 6 is already closed. This position also occurs, for example, with welded contacts.
  • the slide 7 is not yet completely in its position corresponding to the "on” position, the extension 15 of the actuating member 14 is able to unlatch the outer conductor switching path.
  • the reset device 21 has already been raised so far by the pin 19 that the release pin 9 of the permanent magnet release 2 can pivot the lever 8 in order to lock it between the lever 8 and the actuating member 14, i.e. to release the latching between the nose-shaped projection 13 and the shoulder 15.
  • the red field of the contact position indicator 26 is visible from the outside through the window 27 (for the sake of clarity, the contact position indicator 26 is not shown in FIGS. 3 and 4).

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  • Burglar Alarm Systems (AREA)
  • Interface Circuits In Exchanges (AREA)

Description

Die Erfindung betrifft einen Fehlerstrom- und Leitungsschutzschalter mit Schalter für einen Mittelleiter, bei dem die bewegliche Schaltbrücke des in einem Gehäuseteil angeordneten Leitungsschutzschalters mit dem beweglichen Kontaktarm des in einem weiteren Gehäuseteil aufgenommenen Schalters für den Mittelleiter über einen an einer Gehäusezwischenwand geführten Schieber gekuppelt ist und geht aus von der EP-A 0 149 441.The invention relates to a residual current and line circuit breaker with a switch for a center conductor, in which the movable switching bridge of the line circuit breaker arranged in a housing part is coupled and goes with the movable contact arm of the switch for the center conductor accommodated in a further housing part via a slide guided on an intermediate wall of the housing from EP-A 0 149 441.

Es ist bekannt, mehrere Leitungsschutzschalter bei der Überwachung von Mehrphasenleitungen miteinander mechanisch über aus den Gehäusen der Schalter herausragende Betätigungsknöpfe zu verbinden, wobei auch die Auslösemechanismen miteinander zu verbinden sind. Löst wenigstens einer der Leitungsschutzschalter, bedingt durch Ansprechen seines Magnetauslösers oder seines Bimetallauslöser aus, dann werden auch die anderen Leitungsschutzschalter geöffnet. Da bloß die Außenleiter überwacht werden müssen, ist es nicht notwendig, dem Mittelleiter einen kompletten Leitungsschutzschalter mit Mechanik, Magnetauslöser und Bimetallauslöser zuzuordnen. Es ist daher schon vorgeschlagen worden, den Kontaktapparat eines dem Mittelleiter zugeordneten Schalters mechanisch mit dem Kontaktapparat des Leitungsschutzschalters von wenigstens einem Außenleiter zu kuppeln.It is known to mechanically connect a plurality of circuit breakers in the monitoring of multiphase lines to one another by means of actuation buttons protruding from the housings of the switches, the trigger mechanisms also having to be connected to one another. If at least one of the miniature circuit breakers trips due to the response of its magnetic release or its bimetallic release, the other miniature circuit breakers are also opened. Since only the outer conductors have to be monitored, it is not necessary to assign a complete circuit breaker with mechanics, magnetic release and bimetal release to the center conductor. It has therefore already been proposed to mechanically couple the contact apparatus of a switch assigned to the center conductor to the contact apparatus of the circuit breaker of at least one outer conductor.

Ein Schutzschalter mit zwangsläufig allpoliger Abschaltung ist aus der DE-B 15 63 919 bekannt. Bei diesem bekannten Schutzschalter ist ein als Schieber ausgebildetes Übertragungsglied vorgesehen, das in Nuten in den Seitenwandungen benachbarter Schalenhälften geführt ist. Ein Nachteil bei diesem bekannten Schutzschalter besteht darin, daß die Betätigungsteile (Kniegelenkteile) des Schutzschalters mit den Schieber betätigenden Verlängerungen ausgeführt sein müssen.A circuit breaker with all-pole disconnection is known from DE-B 15 63 919. In this known circuit breaker, a transmission element designed as a slide is provided, which is guided in grooves in the side walls of adjacent shell halves. A disadvantage of this known circuit breaker is that the actuating parts (knee joint parts) of the circuit breaker must be designed with extensions that operate the slide.

Ein Leitungsschutzschalter, bei dem die Kupplung des Kontaktapparates des Leitungsschutzschalters mit dem des Schalters für den Mittelleiter ohne Änderung des Aufbaus des Leitungsschutzschalters möglich ist, ist aus der AT-A 378 283 bekannt. Bei diesem auch aus der EP-A1-0 149 441 bekannten Schutzschalter mit Schalter für einen Mittelleiter ist die bewegliche Schaltbrücke des Schutzschalters über einen an der Seitenwand des Gehäuses des Schutzschalters geführten Schieber mit dem beweglichen Kontakt des Schalters für den Mittelleiter gekuppelt. Der Schieber weist wenigstens einen am beweglichen Kontakt des Schalters für den Mittelleiter angreifenden Vorsprung und einen als Stift ausgebildeten Ansatz auf, der gleichzeitig der Lagerbolzen für das Gelenk zwischen der Schaltbrücke und deren Betätigungsorgan ist.A circuit breaker in which the coupling of the contactor of the circuit breaker with that of the switch for the center conductor is possible without changing the structure of the circuit breaker is known from AT-A 378 283. In this circuit breaker with switch for a center conductor, which is also known from EP-A1-0 149 441, the movable switching bridge of the circuit breaker is coupled to the movable contact of the switch for the center conductor via a slide guided on the side wall of the housing of the circuit breaker. The slide has at least one projection which engages the movable contact of the switch for the center conductor and a projection which is designed as a pin and which is at the same time the bearing pin for the joint between the switching bridge and its actuating member.

Der Erfindung liegt die Aufgabe zugrunde, bei einem Schutzschalter der eingangs genannten Gattung die als Schieber ausgebildete Kupplung zwischen der mit Bimetall-Magnetauslösung und Lichtbogenlöscheinrichtung ausgerüsteten geschützten Schaltstrecke und der einfachen ungeschützten Schaltstrecke (Schalter für den Mittelleiter) für weitere Funktionen des Fehlerstromschutzes heranzuziehen.The invention is based on the object, in a circuit breaker of the type mentioned, to use the coupling designed as a slide between the bimetallic magnetic release and arc extinguishing device equipped protected switching path and the simple unprotected switching path (switch for the center conductor) for further functions of the residual current protection.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß dem Permanentmagnetauslöser des Fehlerstromschutzes ein im Gehäuse verschwenkbar gelagerter Hebel zugeordnet ist, wobei an einem Ende des Hebels der Auslösestift des Permanentmagnetauslösers anliegt und das andere Ende des Hebels in der "Ein"-Stellung des Schalters mit einem federbelasteten Betätigungsglied, das einen der Klinkenauflage des Leitungsschutzschalters zugeordneten Zapfen aufweist, verrastet ist und daß am Schieber ein Zapfen vorgesehen ist, der das Betätigungsglied entgegen der Kraft der diesem zugeordneten Feder beim Verschwenken des Kontaktarmes des Schalters für den Mittelleiter in seine Schließstellung in die für eine Verrastung mit dem dem Permanentmagnetauslöser zugeordneten Hebel richtige Lage verschwenkt.According to the invention this object is achieved in that the permanent magnet trigger of the residual current protection is assigned a lever which is pivotably mounted in the housing, the trigger pin of the permanent magnet trigger being present at one end of the lever and the other end of the lever in the "on" position of the switch with a spring-loaded Actuator, which has a peg assigned to the pawl support of the circuit breaker, is locked and that a peg is provided on the slide, which the actuator against the force of the associated spring when pivoting the contact arm of the switch for the center conductor in its closed position in the for a latching correct position pivoted with the lever associated with the permanent magnet release.

Mit dem erfindungsgemäßen Schalter wird ein Leitungsschutz und ein Fehlerstromschutz erreicht, ohne daß dem Fehlerstromschutz eine gesonderte Mechanik zur Betätigung eines Kontaktapparates nötig wird. Vielmehr löst der Haltemagnetauslöser des Fehlerstromschutzes im Auslösefall über den Hebel und das Betätigungsglied unmittelbar die Mechanik des Leitungsschutzes aus. Durch den am Schieber vorgesehenen Zapfen wird das Betätigungsglied nach erfolgter Auslösung durch den in Ausschaltstellung gehenden Schieber wieder so zurückverstellt, daß es mit dem dem Permanentmagnetauslöser zugeordneten Hebel verrasten kann. Es kann daher mit einem einzigen Einschaltknopf der Schalter wieder eingeschaltet werden, ohne daß es besonderer Maßnahmen bedarf, den Hebel des Fehlerstromschutzteiles mit dem Betätigungsglied zu verrasten, da dieses nach dem Auslösen selbsttätig erfolgt.With the switch according to the invention, line protection and residual current protection are achieved without the need for a separate mechanism for actuating a contact apparatus for the residual current protection. Rather, the holding magnet release of the residual current device triggers the mechanism of the line protection directly via the lever and the actuator. By means of the pin provided on the slide, the actuating element is reset after the triggering by the slide going into the off position in such a way that it can latch with the lever assigned to the permanent magnet release. It can therefore be switched on again with a single on button, without special measures being required to lock the lever of the residual current protection part with the actuating element, since this takes place automatically after triggering.

In einer Ausführungsform der Erfindung ist vorgesehen, daß dem Auslösestift des Permanentmagnetauslösers ein verschwenkbar gelagerter Rücksteller zugeordnet ist, der als zweiarmiger Hebel ausgebildet ist, wobei der Arm des Rückstellers, der dem Permanentmagnetauslöser zugeordnet ist, unter der Wirkung einer vorzugsweise haamadelförmig ausgebildeten Feder steht, die den Rücksteller auf den Auslösestift des Permanentmagnetauslösers zu belastet und daß der andere Arm des Rückstellers durch einen am Schieber vorgesehenen Zapfen in der "Ein"-Stellung vom Auslösestift des Permanentmagnetauslösers abgehoben ist. Mit dieser Ausführungsform wird eine weitere Funktion des Schiebers erreicht, da der Rücksteller beim Einschalten des Schutzschalters durch den Schieber so angehoben wird, daß der Auslösestift des Permanentmagnetauslösers die Klinkenauflage betätigen kann. Dabei wird nach erfolgter Auslösung und Rückkehr des Schiebers in die "Aus"-Stellung der Auslösestift des Permanentmagnetauslösers durch den durch die Rückstellfeder angetriebenen Rücksteller niedergedrückt.In one embodiment of the invention, it is provided that the trigger pin of the permanent magnet release is assigned a pivotably mounted reset device, which is designed as a two-armed lever, the arm of the reset device, which is assigned to the permanent magnet release, being under the action of a preferably hairpin-shaped spring, which the resettler is loaded on the trigger pin of the permanent magnet trigger and that the other arm of the resetter is lifted from the trigger pin of the permanent magnet trigger in the "on" position by a pin provided on the slide. With this embodiment, a further function of the slide is achieved, since the reset is raised by the slide when the circuit breaker is switched on in such a way that the release pin of the permanent magnet release can actuate the pawl rest. After triggering and return of the slide to the "off" position, the trigger pin of the permanent magnet release is depressed by the reset mechanism driven by the return spring.

In einer praktischen Ausführungsform kann dabei vorgesehen sein, daß ein- und derselbe Zapfen am Schieber zum Verschwenken des Betätigungsgliedes einerseits und des Rückstellers anderseits vorgesehen ist und der Zapfen zwischen einer Verlängerung des Betätigungsgliedes und einem Arm des Rückstellers angeordnet ist. Dadurch ergibt sich eine raumsparende Anordnung und eine konstruktive Vereinfachung, weil ein Bauteil zwei Aufgaben erfüllt.In a practical embodiment, it can be provided that one and the same pin on the slide for pivoting the actuation member is provided on the one hand and the reset on the other and the pin is arranged between an extension of the actuator and an arm of the reset. This results in a space-saving arrangement and a constructional simplification because one component fulfills two tasks.

Es kann auch vorgesehen sein, daß das Betätigungsglied in der "Aus"-Stellung unter der Wirkung der ihm zugeordneten Feder an einem gehäusefesten Anschlag anliegt. Dadurch wird die Achse des Betätigungsgliedes entlastet und der Verschwenkbereich begrenzt, so daß das Zurückbewegen des Betätigungsgliedes in die mit dem Hebel verrastete Stellung einfacher ist.It can also be provided that the actuator in the "off" position rests against a stop fixed to the housing under the action of the spring assigned to it. This relieves the axis of the actuator and limits the pivoting range, so that moving the actuator back into the position locked with the lever is easier.

Ferner kann ein Fehlerstrom- und Leitungsschutzschalter mit Schalter für einen Mittelleiter, bei dem die bewegliche Schaltbrücke des in einem Gehäuseteil angeordneten Leitungsschutzschalters mit dem beweglichen Kontaktarm des in einem weiteren Gehäuseteil aufgenommenen Schalters für den Mittelleiter über einen an einer Gehäusezwischenwand geführten Schieber gekuppelt ist.Furthermore, a residual current and line circuit breaker with a switch for a center conductor can be coupled, in which the movable switching bridge of the line circuit breaker arranged in one housing part is coupled to the movable contact arm of the switch for the center conductor accommodated in a further housing part via a slide guided on an intermediate wall of the housing.

Ferner liegt einer Weiterbildung der Erfindung die Aufgabe zugrunde, bei einem Schutzschalter der eingangs genannten Gattung die als Schieber ausgebildete Kupplung zwischen der mit Bimetallmagnetauslösung und Lichtbogenlöscheinrichtung ausgerüsteten geschützten Schaltstrecke und der einfachen ungeschützten Schaltstrecke (Schalter für den Mittelleiter) für weitere Funktionen des Fehlerstromschutzes heranzuziehen.A further development of the invention is based on the object, in a circuit breaker of the type mentioned, to use the coupling, designed as a slide, between the protected switching path equipped with a bimetallic magnetic release and arc extinguishing device and the simple unprotected switching path (switch for the center conductor) for further functions of the residual current protection.

Diese Aufgabe wird dadurch gelöst, daß ein an sich bekannter Prüfkreis mit Prüftaste, zwei Prüfkontakten und einer Prüfkontaktfeder vorgesehen ist, wobei ein Teil der Prüfkontaktfeder durch Betätigung der Prüftaste in Anlage an den ihr zugeordneten Prüfkontakt anlegbar ist und daß ein anderer Teil der Prüfkontakfeder an einem zweiten Prüfkontakt anliegt und bei geöffneten Kontakten durch den Schieber vom Kontakt abgehoben ist.This object is achieved in that a test circuit known per se is provided with a test button, two test contacts and a test contact spring, part of the test contact spring being able to be applied to the test contact assigned to it by pressing the test button and another part of the test contact spring on one second test contact is present and is lifted from the contact by the slide when the contacts are open.

Durch diese Funktion des Schiebers wird der an sich bekannte Prüfkreis durch eine Prüfkontaktfeder, die zwei Prüfkontakte betätigt, geschlossen. Zugleich wird gewährleistet, daß ein Kontakt trotz Betätigung der Prüftaste nur dann geschlossen ist, wenn sich der Schutzschalter und damit der Schieber in der der Einstellung entsprechenden Lage befindet. Dadurch ist eine Beschädigung des Schalters auch bei längerem Drücken der Prüftaste ausgeschlossen.This function of the slide closes the test circuit known per se by means of a test contact spring which actuates two test contacts. At the same time it is ensured that a contact is only closed when the test button is pressed if the circuit breaker and thus the slide is in the position corresponding to the setting. This prevents damage to the switch, even if the test button is pressed for a long time.

Aus der EP-A1-0 144 691 ist ein Selbstschalter mit Anzeige der Kontaktstellung bekannt. Der bekannte Kontaktstellungsanzeiger ist mit dem beweglichen Kontakt des Selbstschalters unmittelbar verbunden.From EP-A1-0 144 691 a self-switch with display of the contact position is known. The known contact position indicator is directly connected to the movable contact of the circuit breaker.

Einer weiteren Ausbildungsform der Erfindung liegt die Aufgabe zugrunde, bei einem Fehlerstrom-und Leitungsschutzschalter mit Schalter für einen Mittelleiter, bei dem die bewegliche Schaltbrücke des in einem Gehäuseteil angeordneten Leitungsschutzschalters mit dem beweglichen Kontaktarm des in einem weiteren Gehäuseteil aufgenommenen Schalters für den Mittelleiter über einen an einer Gehäusezwischenwand geführten Schieber gekuppelt ist, die als Schieber ausgebildete Kupplung zwischen der mit Bimetallmagnetauslösung und Lichtbogenlöscheinrichtung ausgerüsteten geschützten Schaltstrecke und der einfachen ungeschützten Schaltstrecke (Schalter für den Mittelleiter) für weitere Funktionen heranzuziehen.A further embodiment of the invention is based on the object in the case of a residual current and line circuit breaker with a switch for a center conductor, in which the movable switching bridge of the line circuit breaker arranged in a housing part with the movable contact arm of the switch for the center conductor accommodated in a further housing part slider coupled to a partition wall, the slider coupling between the protected switching path equipped with bimetallic magnetic release and arc quenching device and the simple unprotected switching path (switch for the center conductor) for further functions.

Diese weitere Aufgabe wird dadurch gelöst, daß im den Fehlerstromschutz aufnehmenden Gehäuseteil ein an sich bekannter Kontaktstellungsanzeiger aufgenommen ist, der im Gehäuse verschwenkbar gelagert ist und von dem ein Ende bei einem Fenster im Gehäuse angeordnet ist und dessen anderes Ende zur Betätigung des Kontaktstellungsanzeigers mit dem Schieber gekuppelt ist.This further object is achieved in that a contact position indicator known per se is accommodated in the housing part receiving the residual current protection, which is pivotally mounted in the housing and of which one end is arranged at a window in the housing and the other end for actuating the contact position indicator with the slide is coupled.

Der beispielsweise zweifärbige, durch das Fenster von außen erkennbare Kontaktstellungsanzeiger wird direkt vom Schieber betätigt und gibt beispielsweise mittels roter und grüner Farbe die "Ein"- bzw. "Aus"-Stellung des Kontaktapparates an.The contact position indicator, for example two-colored, which can be seen from the outside of the window, is actuated directly by the slide and indicates, for example by means of red and green color, the "on" or "off" position of the contact apparatus.

Weitere Vorteile der Erfindung ergeben sich aus der nachstehenden Beschreibung eines Ausführungsbeispieles, bei welcher auf die angeschlossenen Zeichnungen Bezug genommen wird. Es zeigt

  • Fig. 1 den den Fehlerstromschutz und den Schalter für den Mittelleiter aufnehmenden Gehäuseteil in der "Aus"-Stellung,
  • Fig. 2 den Schutzschalter aus Fig. 1 in der "Ein"-Stellung,
  • Fig. 3 den Schalter aus Fig. 1 und 2 im Moment der Auslösung durch den Permanentmagnetauslöser und
  • Fig. 4 die Freiauslösung des Schalters.
Further advantages of the invention result from the following description of an exemplary embodiment, in which reference is made to the attached drawings. It shows
  • 1 the residual current protection and the switch for the center conductor receiving housing part in the "off" position,
  • 2 shows the circuit breaker from FIG. 1 in the "on" position,
  • Fig. 3, the switch of Fig. 1 and 2 at the moment of tripping by the permanent magnet release and
  • Fig. 4 the free release of the switch.

Bevor im einzelnen auf die Beschreibung eingegangen wird wird festgehalten, daß der im in den Figuren nicht sichtbaren Gehäuseteil aufgenommene Leitungsschutzteil beispielsweise die in der AT-A 378 283 bzw. der EP-A1-0 149 441 gezeigte und beschriebene Ausgestaltung besitzen kann. Bevorzugt ist dabei, daß der im in den Zeichnungen sichtbaren Gehäuseteil aufgenommene Schieber mit dem Leitungsschutzschalter, so wie in der AT-A 378 283 oder der EP-A1-0 149 441 beschrieben, gekuppelt ist.Before going into the description in detail, it is noted that the line protection part accommodated in the housing part, which is not visible in the figures, can have, for example, the configuration shown and described in AT-A 378 283 and EP-A1-0 149 441. It is preferred that the slide shown in the housing part shown in the drawings is coupled to the circuit breaker as described in AT-A 378 283 or EP-A1-0 149 441.

Der im in den Zeichnungen sichtbaren Fehlerstromschutz verwendete Permanentmagnetauslöser kann beispielsweise der hermetisch dichte, aus der EP-A2-0 154 619 bekannte Haltemagnetauslöser sein.The permanent magnet release used in the residual current protection visible in the drawings can be, for example, the hermetically sealed holding magnet release known from EP-A2-0 154 619.

Wenngleich die Kupplung des Schiebers mit dem Leitungsschutzteil in der in der AT-PS 378 283 beschriebenen Art und Weise bevorzugt ist, ist die Erfindung nicht auf diese Ausführungsform beschränkt, sondern jede andere Möglichkeit der Kupplung des Schiebers mit der Auslösemechanik oder der Schaltbrücke des Leitungsschutzschalters, ob dies nun direkt oder indirekt erfolgt, ist im Rahmen der Erfindung verwendbar.Although the coupling of the slide with the line protection part is preferred in the manner described in AT-PS 378 283, the invention is not limited to this embodiment, but any other possibility of coupling the slide with the release mechanism or the switching bridge of the line protection switch, whether this is done directly or indirectly can be used within the scope of the invention.

Das nachstehend beschriebene Ausführungsbeispiel des erfindungsgemäßen Schutzschalters ist ein zwei Module breiter FI/LS-Schalter, der netzspannungsunabhängig ist und mit einem einzigen Einschaltknopf betätigt werden kann. Der Schalter besitzt eine (nicht gezeigte), mit Bimetall-Magnetauslösung und Lichtbogenlöscheinrichtung ausgerüstete geschützte Schaltstrecke (Leitungsschutzschalter) und eine einfache ungeschützte Schaltstrecke (Schalter für den Mittelleiter), wobei die beweglichen Schaltbrücken beider Schaltstrecken durch eine Kupplung miteinander gekoppelt sind. Der Fehlerstromschutz umfaßt einen Permanentmagnetauslöser, der im Fehlerstromfalle die zum Auslösen erforderliche Energie durch den von beiden Schaltstrecken durchflossenen Differentialwandler (Summenstromwandler) erhält.The exemplary embodiment of the circuit breaker according to the invention described below is a two-module-wide RCD which is independent of the mains voltage and can be operated with a single switch. The switch has a bimetal magnet (not shown) Tripping and arc extinguishing device equipped protected switching path (miniature circuit breaker) and a simple unprotected switching path (switch for the center conductor), the movable switching bridges of both switching paths are coupled to each other by a coupling. The residual current protection includes a permanent magnet release which receives the energy required for tripping in the event of a residual current through the differential transformer (total current transformer) through which both switching paths flow.

In einem Gehäuse 1 ist ein Permanentmagnetauslöser 2 angeordnet, der im Fehlerstromfall die zum Auslösen erforderliche Energie durch den von beiden Schaltstrecken 3 und 4 durchflossenen Differentialwandler 5 erhält. Die im sichtbaren Gehäuseteil angeordnete Schaltstrecke 3 wird vom Mittelleiter (N-Leiter) gebildet und enthält einen Kontaktapparat mit beweglicher Schaltbrücke 6.A permanent magnet release 2 is arranged in a housing 1 and, in the event of a fault current, receives the energy required for triggering through the differential converter 5 through which both switching paths 3 and 4 flow. The switching path 3 arranged in the visible housing part is formed by the center conductor (N conductor) and contains a contact apparatus with a movable switching bridge 6.

Die bewegliche Schaltbrücke 6 ist über eine als Schieber 7 ausgebildete Kupplung direkt oder indirekt mit der nicht sichtbaren, beweglichen Schaltbrücke des Leitungsschutzschalters gekuppelt, so daß die bewegliche Schaltbrücke 6 den Bewegungen der Schaltbrücke des Leitungsschutzschalters folgt.The movable switching bridge 6 is coupled directly or indirectly via a coupling designed as a slide 7 to the non-visible, movable switching bridge of the circuit breaker, so that the movable switching bridge 6 follows the movements of the switching bridge of the circuit breaker.

Im Gehäuse 1 ist um einen Lagerzapfen 36 verschwenkbar ein Hebel 8 angeordnet, von dem ein Ende 11 dem Auslösestift 9 des Permanentmagnetauslösers 2 zugeordnet ist. Das andere Ende 12 des Hebels weist eine nasenartige Anformung 13 auf, an der in der "Ein"-Stellung (vgl. Fig. 2) ein Ansatz 15 eines Betätigungsgliedes 14, das im Schalter um eine Achse 16 verschwenkbar gelagert ist, in Anlage kommt. Durch die Verrastung der nasenartigen Anformung 13 mit dem Ansatz 15 wird ein Verschwenken des Betätigungsgliedes 14 unter der Wirkung der ihm zugeordneten Auslösefeder 17 verhindert. Das Betätigungsglied 14 besitzt einen die Zwischenwand zwischen den beiden Gehäuseteilen durchsetzenden Zapfen 18, der im Auslösefall an der Klinkenauflage (nicht sichtbar) des Leitungsschutzschalters angreift, so daß dessen Auslösemechanik betätigt wird.In the housing 1, a lever 8 is arranged pivotably about a bearing pin 36, one end 11 of which is assigned to the release pin 9 of the permanent magnet release 2. The other end 12 of the lever has a nose-like projection 13, in which, in the "on" position (cf. FIG. 2), an extension 15 of an actuating element 14, which is pivotably mounted in the switch about an axis 16, comes into contact . The latching of the nose-like projection 13 with the extension 15 prevents the actuating member 14 from pivoting under the action of the trigger spring 17 assigned to it. The actuating member 14 has a pin 18 which penetrates the intermediate wall between the two housing parts and which, in the event of tripping, acts on the latch support (not visible) of the circuit breaker, so that its tripping mechanism is actuated.

Wie aus Fig. 1 ersichtlich, wird das Betätigungsglied 14 durch einen am Schieber 7 vorgesehenen Zapfen 19, der an einer Verlängerung 20 des Betätigungsgliedes 14 angreift, in der "Aus"-Stellung entgegen der Wirkung der Auslösefeder 17 in die für die Verrastung mit dem Hebel 8 richtige Lage verschwenkt.As can be seen from Fig. 1, the actuator 14 by a provided on the slide 7 pin 19 which engages an extension 20 of the actuator 14 in the "off" position against the action of the release spring 17 in the for locking with the Lever 8 swiveled in the correct position.

Dem Zapfen 19 am Schieber 7 ist weiters ein Ende eines um einen Lagerzapfen 10 verschwenkbaren Rückstellers 21 für den Permanentmagnetauslöser 2 zugeordnet. Dieser Rücksteller 21 steht unter der Wirkung einer Rückstellfeder 22, die das dem Auslösestift 9 des Permanentmagnetauslösers 2 zugeordnete Ende 23 des Rückstellers 21 gegen den Auslösestift 9 drückt, wenn sich der Schalter in der "Aus"-Stellung befindet. In der "Ein"-Stellung wird der Rücksteller 21 vom Zapfen 19 am Schieber 7 derart gegen die Wirkung der Rückstellfeder 22 verschwenkt, daß das Ende 23 des Rückstellers 21 nicht am Auslösestift 9 des Permanentmagnetauslösers 2 anliegt. In dieser in Fig. 2 gezeigten Einstellung wird lediglich der Hebel 8 durch die ihm zugeordnete, in Fig. 3 gezeigte Auflagefeder 24 in Anlage an den Auslösestift 9 des Permanentmagnetauslösers 2 gehalten.The pin 19 on the slide 7 is further assigned an end of a pivotable about a bearing pin 10 reset 21 for the permanent magnet release 2. This reset means 21 is under the action of a return spring 22 which presses the end 23 of the reset means 21 assigned to the release pin 9 of the permanent magnet release 2 against the release pin 9 when the switch is in the “off” position. In the "on" position, the reset 21 is pivoted by the pin 19 on the slide 7 against the action of the return spring 22 such that the end 23 of the reset 21 does not abut the release pin 9 of the permanent magnet release 2. In this setting shown in FIG. 2, only the lever 8 is held in contact with the release pin 9 of the permanent magnet release 2 by the support spring 24 shown in FIG. 3.

Im erfindungsgemäßen Schalter kann weiters ein um einen Lagerzapfen 25 verschwenkbarer Kontaktstellungsanzeiger 26 vorgesehen sein. Dieser Kontaktstellungsanzeiger 26 ist von außen durch ein Fenster 27 erkennbar, wobei von außen durch das Fenster 27 in der in Fig. 1 gezeigten "Aus"-Stellung ein grün gefärbtes Feld und in der in Fig. 2 gezeigten "Ein"-Stellung ein rot gefärbtes Feld des Kontaktstellungsanzeigers 26 zu sehen ist. Betätigt wird der Kontaktstellungsanzeiger 26 vom Schieber 7 durch einen Betätigungszapfen 28, der in einen einseitig offenen Schlitz 28' des Kontaktstellungsanzeigers 26 nach Art einer "Zapfen-Schlitz"- , Kupplung eingreift. Es ist erkennbar, daß auf Grund dieser Anordnung beim Hin- und Herbewegen des Schiebers 7 der Kontaktstellungsanzeiger 26 hin und her verschwenkt.In the switch according to the invention, a contact position indicator 26 which can be pivoted about a bearing journal 25 can also be provided. This contact position indicator 26 can be seen from the outside through a window 27, with a field colored green in the "off" position shown in FIG. 1 and a red field in the "on" position shown in FIG. 2 from the outside through the window 27 colored field of the contact position indicator 26 can be seen. The contact position indicator 26 is actuated by the slide 7 by means of an actuating pin 28 which engages in a slot 28 'of the contact position indicator 26 which is open on one side in the manner of a "pin-slot" coupling. It can be seen that due to this arrangement, when the slide 7 is moved back and forth, the contact position indicator 26 pivots back and forth.

Im den Fehlerstromschutz aufnehmenden, in den Zeichnungen sichtbaren Gehäuseteil des erfindungsgemäßen FI/LS-Schalters kann auch ein Prüfkreis vorgesehen sein. Dieser Prüfkreis weist zwei Prüfkontakte 29 und 39 und eine im wesentlichen U-förmig gebogene, im Gehäuse gehalterte Prüfkontaktfeder 30 auf. Der eine Schenkel 31 der Prüfkontaktfeder 30 kann mit Hilfe einer Prüftaste 32 in Anlage an den Prüfkontakt 29 gebracht werden. Der andere Schenkel 33 der Prüfkontaktfeder 30 liegt in der "Ein"-Stellung (Fig. 2), d.h. wenn die beweglichen Schaltbrücken beider Schaltstrecken geschlossen sind, am Prüfkontakt 39 an. Wie in Fig. 3 erkennbar, ist der Schenkel 33 der Prüfkontaktfeder 30 zwischen zwei Betätigungszapfen 34 und 35 des Schiebers 7 aufgenommen. Daher wird der Schenkel 33 durch den Betätigungszapfen 35 vom Prüfkontakt 39 abgehoben, wenn sich der Schalter in der "Aus"-Stellung (Fig. 1) befindet. Dadurch wird die Bewegung des Schiebers 7 auch dazu ausgenützt, den Prüfkreis zu unterbrechen, sobald eine Auslösung - aus welchem Grund immer, z.B. durch Drücken auf die Prüftaste 32 - erfolgt. Es ist damit ausgeschlossen, daß der Schalter durch zu langes Schließen des Prüfkreises beschädigt wird.A test circuit can also be provided in the housing part of the RCD / MCB according to the invention that receives the residual current protection and is visible in the drawings. This test circuit has two test contacts 29 and 39 and an essentially U-shaped bent test contact spring 30 held in the housing. One leg 31 of the test contact spring 30 can be brought into contact with the test contact 29 using a test button 32. The other leg 33 of the test contact spring 30 is in the "on" position (Fig. 2), i.e. when the movable switching bridges of both switching sections are closed, at test contact 39. As can be seen in FIG. 3, the leg 33 of the test contact spring 30 is received between two actuating pins 34 and 35 of the slide 7. Therefore, the leg 33 is lifted by the actuating pin 35 from the test contact 39 when the switch is in the "off" position (FIG. 1). As a result, the movement of the slide 7 is also used to interrupt the test circuit as soon as it is triggered - for whatever reason, e.g. by pressing the test button 32 -. This prevents the switch from being damaged if the test circuit is closed too long.

Im folgenden wird die Funktion des erfindungsgemäßen FI/LS-Schalters beschrieben:The function of the RCD according to the invention is described below:

Ausgehend von der in Fig. 2 gezeigten "Ein"-Stellung, in welcher der Ansatz 15 hinter die nasenförmige Anformung 13 des Hebels 8 eingreift und der Rücksteller 21 durch den Zapfen 19 am Schieber 7 vom Auslösestift 9 des Permanentmagnetauslösers 2 abgehoben ist, und in welcher Stellung durch das Fenster 27 das rote Feld des Kontaktstellungszeigers 26 sichtbar ist und weiters der Schenkel 33 der Prüfkontaktfeder durch den Betätigungszapfen 34 unterstützt am Prüfkontakt 39 anliegt, wird der Schalter z.B. durch Betätigen der Prüftaste 32 ausgelöst. Durch Betätigen der Prüftaste 32 wird der Schenkel 31 der Prüfkontaktfeder 30 in Anlage an den Prüfkontakt 29 verschwenkt (Fig. 3), so daß der Prüfkreis geschlossen wird. Dadurch löst der Permanentmagnetauslöser 2 aus und der Hebel 8 wird entgegen der Kraft seiner Auflagefeder 24 um den Lagerzapfen 36 verschwenkt, wobei der Ansatz 15 des Betätigungsgliedes 14 vom Hebel 8 frei kommt und das Betätigungsglied 14 unter der Wirkung der Auslösefeder 17 in die in Fig. 3 gezeigte Lage, in der es an einem gehäusefesten Anschlag 37 anliegt, verschwenkt. Durch dieses Verschwenken des Betätigungsgliedes 14 wird durch den Zapfen 18 am Betätigungsglied 14 die Klinkenauflage des Leitungsschutzschalters zur Auslösung der Schaltmechanik betätigt. Sowie die Schaltmechanik ausgelöst hat, gelangt der Schalter in die in Fig. 1 gezeigte "Aus"-Stellung.Starting from the "on" position shown in Fig. 2, in which the projection 15 engages behind the nose-shaped projection 13 of the lever 8 and the reset 21 is lifted by the pin 19 on the slide 7 from the release pin 9 of the permanent magnet release 2, and in Which position is visible through the window 27 of the red field of the contact position pointer 26 and furthermore the leg 33 of the test contact spring, supported by the actuating pin 34, bears against the test contact 39, the switch is triggered, for example, by pressing the test button 32. By pressing the test button 32, the leg 31 of the test contact spring 30 is pivoted into contact with the test contact 29 (FIG. 3), so that the test circuit is closed. This triggers the permanent magnet release 2 and the lever 8 is pivoted against the force of its support spring 24 around the bearing pin 36, the projection 15 of the actuating member 14 being released from the lever 8 and the actuating member 14 under the action of the release spring 17 into the position shown in FIG. 3, in which it is attached to a housing Stop 37 is applied, pivoted. By this pivoting of the actuator 14, the pawl support of the circuit breaker is actuated by the pin 18 on the actuator 14 to trigger the switching mechanism. As soon as the switching mechanism has triggered, the switch reaches the "off" position shown in FIG. 1.

Dadurch, daß sich der Schieber 7 zufolge der Kupplung mit dem Leitungsschutzschalter nach oben bewegt, wird zunächst der Rücksteller 21 freigegeben und kann unter der Wirkung der Rückstellfeder 22 den Permanentmagnetauslöser 2 durch Niederdrücken des Auslösestiftes 9 wieder rückstellen. Der Zapfen 19 am Schieber 7 gelangt bei seiner Bewegung nach oben in Anlage an die Verlängerung 20 des Betätigungsgliedes 14, so daß dieses unter Zusammendrücken der Auslösefeder 17 in die für eine neuerliche Verrastung mit dem Hebel 8, der inzwischen unter der Wirkung der Auflagefeder 24 wieder zurückgeschwenkt hat, vorbereitete Lage verschwenkt.Characterized in that the slide 7 moves upward due to the clutch with the circuit breaker, the reset 21 is first released and can reset the permanent magnet release 2 by depressing the release pin 9 under the action of the return spring 22. The pin 19 on the slide 7 comes into contact with the extension 20 of the actuator 14 during its upward movement, so that it compresses the trigger spring 17 into a new latching with the lever 8, which is now under the action of the support spring 24 again has pivoted back, swiveled prepared position.

Weiters wurde der Schenkel 33 der Prüfkontaktfeder 30 durch den Betätigungszapfen 35 des Schiebers 7 vom ihm zugeordneten Prüfkontakt 39 abgehoben, so daß der Prüfkreis trotz Betätigung der Prüftaste 32 und Anlage des Schenkels 31 der Prüfkontaktfeder 30 am Prüfkontakt 29 nicht geschlossen werden kann.Furthermore, the leg 33 of the test contact spring 30 was lifted by the actuating pin 35 of the slide 7 from the test contact 39 assigned to it, so that the test circuit cannot be closed despite actuation of the test button 32 and contact of the leg 31 of the test contact spring 30 with the test contact 29.

Weiters wurde der Kontaktstellungszeiger 26 unter der Wirkung des Betätigungszapfens 28 verschwenkt, so daß durch das Fenster 27 jetzt sein grünes Feld sichtbar ist.Furthermore, the contact position indicator 26 has been pivoted under the action of the actuating pin 28, so that its green field is now visible through the window 27.

Durch Betätigung des Einschaltknopfes 38 kann der Schalter wieder in die in Fig. 2 gezeigte "Ein"-Stellung bewegt werden.By actuating the ON button 38, the switch can be moved back to the "ON" position shown in FIG. 2.

Mit dem FIILS-Schalter ist auch eine "Freiauslösung" möglich. Dies ist in Fig. 4 gezeigt. Der Einschaltknopf 38 befindet sich noch nicht ganz in seiner der "Ein"-Stellung entsprechenden Lage, jedoch ist die bewegliche Schaltbrücke 6 bereits geschlossen. Diese Stellung tritt beispielsweise auch bei verschweißten Kontakten auf. Obwohl sich der Schieber 7 noch nicht vollständig in seiner der "Ein"-Stellung entsprechenden Lage befindet, ist der Ansatz 15 des Betätigungsgliedes 14 in der Lage, die Außenleiterschaltstrecke zu entklinken. Ebenso ist der Rücksteller 21 durch den Zapfen 19 bereits so weit angehoben, daß der Auslösestift 9 des Permanentmagnetauslösers 2 den Hebel 8 verschwenken kann, um eine Verrastung zwischen dem Hebel 8 und dem Betätigungsglied 14, d.h. die Verrastung zwischen der nasenförmigen Anformung 13 und dem Ansatz 15, zu lösen.A "free trip" is also possible with the FIILS switch. This is shown in Figure 4. The switch button 38 is not yet fully in its "on" position, but the movable switching bridge 6 is already closed. This position also occurs, for example, with welded contacts. Although the slide 7 is not yet completely in its position corresponding to the "on" position, the extension 15 of the actuating member 14 is able to unlatch the outer conductor switching path. Likewise, the reset device 21 has already been raised so far by the pin 19 that the release pin 9 of the permanent magnet release 2 can pivot the lever 8 in order to lock it between the lever 8 and the actuating member 14, i.e. to release the latching between the nose-shaped projection 13 and the shoulder 15.

In dieser Stellung ist durch das Fenster 27 von außen das rote Feld des Kontaktstellungsanzeigers 26 sichtbar (der Übersichtlichkeit wegen ist der Kontaktstellungsanzeiger 26 in den Fig. 3 und 4 nicht eingezeichnet).In this position, the red field of the contact position indicator 26 is visible from the outside through the window 27 (for the sake of clarity, the contact position indicator 26 is not shown in FIGS. 3 and 4).

Claims (12)

1. Fault-current and line protection circuit breaker with a switch for a neutral conductor, in which the movable switching bridge of the line protection circuit breaker located in one housing part is connected to the movable contact arm of the switch for the neutral conductor received in a further housing part, by way of a slide (7) guided on an intermediate wall of the housing, characterised in that associated with the permanent magnet tripping device (2) of the fault current circuit breaker is a lever (8) mounted to tilt in the housing, the tripping pin (9) of the permanent magnet tripping device (2) bearing against one end (11) of the lever (8) and, in the "on" position of the switch, the other end (12) of the lever (8) being locked to a spring-loaded (17) actuating member (14), which comprises a pin (18) associated with the spring rest of the line protection circuit breaker and that provided on the slide (7) is a pin (19), which tilts the actuating member (14) against the force of the spring (17) associated therewith when the contact arm (6) of the switch for the neutral conductor in its closed position is tilted into the correct position for locking to the lever (8) associated with the permanent magnet tripping device (2).
2. Circuit breaker according to Claim 1, characterised in that associated with the tripping pin (9) of the permanent magnet tripping device (2) is a tiltably mounted restoring member (21), which is constructed as a two-armed lever, the arm (23) of the restoring member (21), which is associated with the permanent magnet tripping device (2), being under the action of a spring (22) preferably constructed in the form of a hair-pin, which loads the restoring member (21) towards the tripping pin (9) of the permanent magnet tripping device (2) and that the other arm of the restoring member (21) is raised by a pin (19) provided on the slide (7), in the "on"-position, from the tripping pin (9) of the permanent magnet tripping device (2).
3. Circuit breaker according to Claim 2, characterised in that one and the same pin (19) on the slide (7) is provided for tilting the actuating member (14) on the one hand and the restoring member (21) on the other hand and the pin (19) is located between an extension (20) of the actuating member (14) and an arm of the restoring member (21).
4. Circuit breaker according to one of Claims 1 to 3, characterised in that located on the opposite side of the end (12) of the lever (8) from the actuating member (14), which end (12) can be locked to the actuating member (14), is a support spring (24), which is preferably constructed as a coil spring and under its action the lever (8) is held in abutment with the tripping pin (9) of the permanent magnet tripping device (2).
5. Circuit breaker according to one of Claims 1 to 4, characterised in that in the "off"-position, the actuating member (14) bears against a stop (37) integral with the housing, under the action of the spring (17) associated therewith.
6. Fault current and line protection circuit breaker with a switch for a neutral conductor, according to one of Claims 1 to 5, in which the movable switching bridge of the line protection circuit breaker located in one housing part is connected to the movable contact arm of the switch for the neutral conductor housed in a further housing part, by way of a slide guided on an intermediate wall of the housing, characterised in that housed in the housing part receiving the fault current circuit breaker is a contact position indicator (26) known per se, which is mounted to tilt in the housing (1) and whereof one end is located in a window (27) in the housing (1) and whereof the other end is connected to the slide (7) for actuating the contact position indicator (26).
7. Circuit breaker according to Claim 6, characterised in that the contact position indicator (26) is constructed as a two-armed lever able to tilt about a pivot pin (25), the lever arm connected to the slide (7) comprising a slot (28'), in which a pin (28) provided ont the slide (7) engages.
8. Circuit breaker according to Claim 7, characterised in that the slot in the lever arm of the contact position indicator (26) is constructed as a slot (29) open on one side.
9. Fault current and line protection circuit breaker with a switch for a neutral conductor, according to one of Claims 1 to 8, in which the movable sitching bridge of the line protection circuit breaker located in one housing part is connected to the movable contact arm of the switch for the neutral conductor housed in a further housing part, by way of a slide guided on an intermediate wall of the housing, characterised in that a test circuit known per se with test button (32), two test contacts (29 and 39) and a test contact spring (30) is provided, one part (31) of the test contact spring (30) being able to be placed in abutment against the test contact (29) associated therewith, by actuating the test button (32) and that another part (33) of the test contact spring (30) bears against a second test contact (29) and when the contacts (6) are open, is raised by the slide (7) from the test contact (39).
10. Circuit breaker according to Claim 9, characterised in that the test contact spring (30) is bent substantially in a U-shape, the test button (32) acting on one side (31) of the test contact spring (30) and the slide (7) acting on the other side (33) thereof.
11. Circuit breaker according to Claim 9 or 10, characterised in that provided on the slide (7) is a pin (35), which raises the side (33) of the test contact spring (30) connected to the slide (7) from the test contact (39) when the contact (6) is open.
12. Circuit breaker according to one of Claims 9 to 11, characterised in that a further pin (34) is provided on the slide (7), which pin presses the side (33) of the test contact spring (30) connected to the slide (7) in abutment against the test contact (39), with elastic deformation of the test contact spring.
EP86890307A 1985-12-02 1986-11-10 Circuit breaker for fault and conduction current protection Expired - Lifetime EP0231732B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3504/85 1985-12-02
AT0350485A AT384120B (en) 1985-12-02 1985-12-02 Fault current and line circuit breakers

Publications (3)

Publication Number Publication Date
EP0231732A2 EP0231732A2 (en) 1987-08-12
EP0231732A3 EP0231732A3 (en) 1989-08-23
EP0231732B1 true EP0231732B1 (en) 1990-07-18

Family

ID=3551429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86890307A Expired - Lifetime EP0231732B1 (en) 1985-12-02 1986-11-10 Circuit breaker for fault and conduction current protection

Country Status (8)

Country Link
EP (1) EP0231732B1 (en)
AT (3) AT384907B (en)
AU (1) AU589715B2 (en)
DE (1) DE3672810D1 (en)
DK (1) DK163616C (en)
ES (1) ES2017472B3 (en)
FI (1) FI84411C (en)
NO (1) NO169513C (en)

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Also Published As

Publication number Publication date
AT384907B (en) 1988-01-25
NO864823D0 (en) 1986-12-01
ES2017472B3 (en) 1991-02-16
DK576686D0 (en) 1986-12-01
DK576686A (en) 1987-06-03
ATA350485A (en) 1987-02-15
FI864902A0 (en) 1986-12-01
DE3672810D1 (en) 1990-08-23
AT384120B (en) 1987-10-12
ATA255986A (en) 1987-06-15
AT384906B (en) 1988-01-25
FI864902A (en) 1987-06-03
NO169513C (en) 1992-07-01
AU6601986A (en) 1987-06-04
EP0231732A3 (en) 1989-08-23
NO864823L (en) 1987-06-03
DK163616C (en) 1992-08-17
AU589715B2 (en) 1989-10-19
FI84411B (en) 1991-08-15
DK163616B (en) 1992-03-16
ATA255886A (en) 1987-06-15
FI84411C (en) 1991-11-25
NO169513B (en) 1992-03-23
EP0231732A2 (en) 1987-08-12

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