EP0565008B1 - Test button device for an earth fault circuit breaker or a differential current circuit breaker - Google Patents

Test button device for an earth fault circuit breaker or a differential current circuit breaker Download PDF

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Publication number
EP0565008B1
EP0565008B1 EP93105552A EP93105552A EP0565008B1 EP 0565008 B1 EP0565008 B1 EP 0565008B1 EP 93105552 A EP93105552 A EP 93105552A EP 93105552 A EP93105552 A EP 93105552A EP 0565008 B1 EP0565008 B1 EP 0565008B1
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EP
European Patent Office
Prior art keywords
test
plate
test key
arrangement according
key arrangement
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
EP93105552A
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German (de)
French (fr)
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EP0565008A1 (en
Inventor
Volker Schmitt
Rolf Goehle
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ABB Patent GmbH
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ABB Patent GmbH
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Publication of EP0565008A1 publication Critical patent/EP0565008A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—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

Definitions

  • the invention relates to a test button arrangement for a residual current or residual current circuit breaker according to the preamble of claim 1 (DE 4011 680 A1).
  • test button arrangement serves to check the functional reliability and operational readiness of the residual current or residual current circuit breaker.
  • a test circuit is closed by means of a test button, with which the trigger is activated, whereby a switching lock is released and the contact points are opened.
  • test button arrangement of the type mentioned has become known, in which the switching shaft on which the movable contact pieces of the Fault current or residual current circuit breaker are attached, a switching position indicator cooperates, the coupling between the switching shaft or the movable contact pieces and the switching position indicator is effected by means of a spring arrangement.
  • the test button acts on a further spring arrangement, the free end of which, when the fault current or residual current circuit breaker is switched on, is contacted by pressing the test button with the connection between the selector shaft and the switch position indicator.
  • the spring arrangement has a certain length which is dimensioned such that the free end of the spring arrangement cannot be brought into contact with the connection between the switching shaft and the switching position indicator in the switched-off state. Nevertheless, the test button can be pressed in completely, and in the case when the spring arrangement is damaged, contacting is still possible.
  • the object of the invention is to provide a test button arrangement of the type mentioned in the introduction, in which a closing of the test circuit is reliably prevented when the residual current or residual current circuit breaker is switched off.
  • the test button can be operated when the residual current or residual current circuit breaker is switched off are not placed in the switch-on position, which will definitely prevent the test circuit from closing.
  • the plate can have an extension which interacts with a projection arranged on the selector shaft, as a result of which the selector shaft acts on the extension and moves the plate in the direction of the off position.
  • the plate is expediently rotatably mounted in relation to the housing, which surrounds the residual current or residual current circuit breaker.
  • FIGS. 1 to 4 each show an insight into an electrical switching device, preferably a residual current circuit breaker, the parts that are important for the invention being drawn and the parts that are less important for the invention are omitted.
  • the switching device or more precisely the residual current circuit breaker 10, has a housing 11, of which only the front part, that is to say the part which is opposite the mounting plane, can be seen.
  • the housing 11 has an opening 13 in the front wall 12.
  • a boomerang-shaped extension 20 is arranged perpendicularly thereto, the extension 20 being formed on the edge 19 by means of a connecting lug 21 running perpendicular to the guide plate.
  • the extension 20 extends in the extension of the edge 22 on the left in the drawing in FIG. 1, which extends perpendicular to the front wall 12.
  • a fixed contact piece 23 which is fastened to a contact piece holding rail 24 and which interacts with a movable contact piece 25 which is fastened to a contact lever 26 which is guided in a contact lever carrier 27 which is not illustrated in any more detail and is only indicated by outlines , wherein the contact lever 26 passes through the contact lever carrier 27 and projects beyond the contact lever carrier 27 in the switched-on position on the opposite side facing the front wall, as indicated by the reference number 26 in this area.
  • a lug 29, which runs parallel to the contact carrier axis of rotation 28 and against which the free end of the projection 20 comes to rest, is formed on the contact lever carrier 27, as can also be seen from FIG.
  • the plate 16 has a recess 30, into which a compression spring 31 is inserted, which rests against a stationary stop 32 and acts on the plate 16 continuously in the direction of arrow P in the drawing to the left.
  • the edge 33 lying opposite the edge 22 has a projection 34 projecting perpendicularly thereto, on which a web 35 is formed perpendicularly thereto; the web 35 runs perpendicular to the plate and perpendicular to the front front wall 12.
  • the housing 11 On the right side in FIG. 1, the housing 11 has a recess 36, through which a recess 37 is formed, in which a test button 38 is guided perpendicular to the front wall 12, the test button 38 having an arm 39 running perpendicular to the front wall 12 , at the free end of which an inwardly projecting nose 40 is formed, which engages behind a stop 41 on the housing 11, so that the movement path of the test button 38 in the direction of the arrow F is limited.
  • the test button 38 has a rod 42 running perpendicular to the front front wall 12.
  • a spring support 43 is provided in a stationary manner, which has a pin 44 which runs parallel to the axis of rotation 28 and around which a contact spring 45 is wound in the manner of a coil spring.
  • One of the free legs namely the leg 46 of the contact spring 45 overlaps the inner region of the residual current circuit breaker and has a U-shaped end 47, with a cross bar 48 adjoining the leg 46 and a molded part at its free end, parallel and at an angle the leg 46 down to the contact lever 26 bent longitudinal web 49, the bending angle alpha being such that the free end of the longitudinal web 49 continuously against the contact piece End of the contact lever 26 resiliently.
  • an electrically conductive connection is obtained between the contact lever and the helical spring-like area 45a.
  • the spring support 43 which is shown in a top view in FIG. 5, has a platform 50 which runs parallel to the front wall 12 and on which tabs 51 are formed which guide a lead wire 52 which runs parallel to the guide pin 44 on the platform.
  • the pin 44 is formed on a holding wall 53 which runs perpendicular to the platform in the direction of the front wall, the holding wall 53 being aligned parallel to the plate 16.
  • leg end 54 The end of the lead wire 52 adjacent to the holding wall 53 is bent parallel to it in a leg end 54, which leg end also rests on the platform and is held by means of a holding lug 55.
  • the other end of the helical spring-shaped area 45a of the contact spring 45 is tangent to the pin 44 on the side opposite the platform 50, i.e. above the pin 44, bent away from the area 45a and bent parallel to the pin axis of the pin 44 as a movable contact element 56.
  • the movable contact element 56 is, as can be seen in Figures 1 to 4, in the range of motion of the rod 42, so that when the test button 38 is pressed against the arrow direction F, it acts against the leg end 54 of the lead wire serving as a fixed contact piece 52 is pressed.
  • the lead wire 52 is a leg of a resistor 57, the other leg 58 of which either has a phase conductor - if the rail 24 is in the line path of the neutral conductor of the residual current circuit breaker - or the neutral conductor if the rail 24 is in the line path a phase conductor is connected.
  • FIG. 1 shows the residual current circuit breaker in the state when the movable contact piece 25 just touches the fixed contact piece 23 when it is switched on.
  • the free end of the extension 20 bears against the nose 29.
  • Figure 2 shows the switch-on position, in which the contact lever in the drawing Figure 2 is to the left of the axis of rotation 28; it can be seen that the extension 20 is free of the nose 29.
  • the contact lever 26 and together with the contact lever carrier also the nose 29 moves into the off position, the nose 29 striking against the extension 20 and the extension 20 and thus the plate 16 against the pressure of the compression spring 31 presses to the right so that the projection 34 comes under a shoulder 59 on the rod 42; the shoulder 59 is formed in the area of the pressing surface 38a of the test button 38 parallel to the rod 42 and in such a way that the shoulder 59 is located exactly above the movement path of the projection 34.
  • Figure 4 shows the residual current circuit breaker in the off position; it can also be seen here that the paragraph 59 hits the projection 34 when the test button 38 is to be pressed down, so that the test button contact 54/56 cannot be closed.
  • the plate 16 has at its upper and lower edges two guide lugs 60 and 6-1, which engage behind the guide plate 15 above and below, so that the plate 16 parallel to the upper and lower edges, the also run parallel to the front wall, can be moved.
  • FIGS. 7 to 9 A further embodiment of the invention is shown in FIGS. 7 to 9.
  • the same reference numbers are to be used for the same parts.
  • the guide plate 15 Within the housing 11 is the guide plate 15, the axis of rotation 28 for the contact lever carrier 27, to which the contact lever 26 is attached, which carries the movable contact piece 25, which comes into contact with the fixed contact piece 23.
  • a twisting plate 70 is pivotably articulated on the guide plate 15 via an axis 71.
  • a tab 72 corresponding to the surface 18 is fastened perpendicular to it; perpendicular to the connecting line between the tab 72 and the axis 71 is on the contact pieces 25 and 23 opposite edge of the rotating plate an extension 73 is formed, which has the same function as the projection 34.
  • the residual current circuit breaker 10 has the test button 38 with the rod 42 and the paragraph 59th
  • a hole 74 is provided, in which one end of a coupling lever 75 is suspended, whereas the other end is articulated on the contact lever carrier 27.
  • the leg 46 of the spring 45 which is only partially shown, is designed and connected to the movable contact piece 23 as described above.
  • FIG. 7 shows the switching device in the contact contact position, that is to say in the position in which the movable contact piece 25 just touches the fixed contact piece 23 during the switch-on process. During the further switch-on process, only the position of the contact lever 26 changes, while the position of the rotating plate 70 is unchanged.
  • test button 38 can be pressed so that the leg 56 of the contact spring 45 can be connected to the leg 54 of the lead wire 52 with the resistor 57 and a circuit between the contact lever 26 and a corresponding conductor is closed.
  • the extension 73 comes under the paragraph 59 of the test button 38, so that the extension 73 hampers or prevents the test button 38 from being pushed in completely.
  • both the plate 16 and the rotating plate 70 have a tab 17 and 72 perpendicular to it, respectively.
  • These tabs can be coated with different colors, for example the surface 17 to the left of the center line 17a can be coated in green and the surface to the right of it can be coated in red, so that the red-coated surface is visible through the opening 13 in the switched-on state, whereas the green surface in the switched-off state is recognizable.
  • the tab 72 can also be coated, so that the opening 13 can signal red in the on state and green in the off state.

Landscapes

  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

A residual current device (10) moving and stationery contact elements (25, 23), the moving contact elements (25) being mounted on a contact lever (26) which is accommodated in a contact lever support (27). A sliding plate (16) is mounted on a guide plate (15), which sliding plates (16) is displaced over a projection (20) by a tab (29) on the contact lever support (27), in such a manner that a projection (34) which is located on the sliding plate (16) passes into the movement path of a test button (38) during the switching-off process, in such a manner that the test button can no longer be completely pressed in (depressed) in the switched-off state. In the switched-on state, the test button (38) can be pressed in completely, so that a test button circuit having a moving contact element (56) and a stationery contact element (54) can be closed. The sliding plate has a lug (17) which is located in front of an opening (13) which is located in the region of an opening (13) in the front wall (12) by painting the lug with different paints, it is possible to identify through the opening (13) whether the switch is in the switched-on or switched-off position. <IMAGE>

Description

Die Erfindung betrifft eine Prüftastenanordnung für einen Fehlerstrom- oder Differenzstromschutzschalter nach dem Oberbegriff des Anspruchs 1 (DE 4011 680 A1).The invention relates to a test button arrangement for a residual current or residual current circuit breaker according to the preamble of claim 1 (DE 4011 680 A1).

Eine derartige Prüftastenanordnung dient bei Fehlerstrom- oder Differenzstromschutzschaltern dazu, die Funktionssicherheit und Funktionsbereitschaft des Fehlerstrom- oder Differenzstromschutzschalters zu überprüfen. Mittels einer Prüftaste wird ein Prüfstromkreis geschlossen, mit dem der Auslöser zum Ansprechen gebracht wird, wodurch ein Schaltschloß entklinkt wird und die Kontaktstellen geöffnet werden.In the case of residual current or residual current circuit breakers, such a test button arrangement serves to check the functional reliability and operational readiness of the residual current or residual current circuit breaker. A test circuit is closed by means of a test button, with which the trigger is activated, whereby a switching lock is released and the contact points are opened.

Aus der DE 40 11 680 A1 ist eine Prüftastenanordnung der eingangs genannten Art bekanntgeworden, bei der mit der Schaltwelle, an der die beweglichen Kontaktstücke des Fehlerstrom- oder Differenzstromschutzschalters angebracht sind, eine Schaltstellungsanzeige zusammenwirkt, wobei die Koppelung zwischen der Schaltwelle bzw. den beweglichen Kontaktstücken und der Schaltstellungsanzeige mittels einer Federanordnung bewirkt wird. Die Prüftaste wirkt auf eine weitere Federanordnung, deren freies Ende im eingeschalteten Zustand des Fehlerstrom- oder Differenzstromschutzschalters durch Druck auf die Prüftaste mit der Verbindung zwischen der Schaltwelle und der Schaltstellungsanzeige kontaktiert wird. Damit der Prüfstromkreis bei ausgeschaltetem Fehlerstromschutzschalter nicht geschlossen werden kann, besitzt die Federanordnung eine bestimmte Länge, die so bemessen ist, daß im Ausschaltzustand das freie Ende der Federanordnung nicht mit der Verbindung zwischen Schaltwelle und Schaltstellungsanzeige in Berührung gebracht werden kann. Gleichwohl aber kann die Prüftaste vollständig eingedrückt werden, und in dem Fall, wenn die Federanordnung beschädigt ist, ist eine Kontaktierung dennoch möglich.From DE 40 11 680 A1 a test button arrangement of the type mentioned has become known, in which the switching shaft on which the movable contact pieces of the Fault current or residual current circuit breaker are attached, a switching position indicator cooperates, the coupling between the switching shaft or the movable contact pieces and the switching position indicator is effected by means of a spring arrangement. The test button acts on a further spring arrangement, the free end of which, when the fault current or residual current circuit breaker is switched on, is contacted by pressing the test button with the connection between the selector shaft and the switch position indicator. So that the test circuit cannot be closed when the earth leakage circuit breaker is switched off, the spring arrangement has a certain length which is dimensioned such that the free end of the spring arrangement cannot be brought into contact with the connection between the switching shaft and the switching position indicator in the switched-off state. Nevertheless, the test button can be pressed in completely, and in the case when the spring arrangement is damaged, contacting is still possible.

Aufgabe der Erfindung ist es, eine Prüftastenanordnung der eingangs genannten Art zu schaffen, bei der ein Schließen des Prüfstromkreises bei ausgeschaltetem Fehlerstrom- oder Differenzstromschutzschalter sicher verhindert wird.The object of the invention is to provide a test button arrangement of the type mentioned in the introduction, in which a closing of the test circuit is reliably prevented when the residual current or residual current circuit breaker is switched off.

Diese Aufgabe wird erfindungsgemäß gelöst durch die Merkmale des Anspruchs 1.This object is achieved according to the invention by the features of claim 1.

Dadurch nämlich, daß die von den Schaltstücken beim Schalten bestätigbare und verstellbare Platte mit ihrem zweiten Ansatz in den Bewegungsweg der Prüftaste bei einer Ausschalthandlung bewegt wird, kann die Prüftaste bei ausgeschaltetem Fehlerstrom- oder Differenzstromschutzschalter nicht in Einschaltstellung verbracht werden, wodurch ein Schließen des Prüfstromkreises mit Sicherheit verhindert ist.Because the plate which can be confirmed and adjusted by the switching elements during switching is moved with its second approach into the movement path of the test button during a switch-off operation, the test button can be operated when the residual current or residual current circuit breaker is switched off are not placed in the switch-on position, which will definitely prevent the test circuit from closing.

Erfindungsgemäß sind zwei Lösungsmöglichkeiten vorhanden.According to the invention there are two possible solutions.

Zum einen kann gemäß kennzeichnenden Merkmalen des Anspruchs 2 die Platte einen Fortsatz aufweisen, der mit einem an der Schaltwelle angeordneten Vorsprung zusammenwirkt, wodurch die Schaltwelle auf den Fortsatz einwirkt und die Platte in Richtung Ausschaltstellung bewegt.On the one hand, according to the characterizing features of claim 2, the plate can have an extension which interacts with a projection arranged on the selector shaft, as a result of which the selector shaft acts on the extension and moves the plate in the direction of the off position.

Damit dabei die Platte immer in Einschaltstellung zurückgebracht wird, ist gemäß kennzeichnenden Merkmalen des Anspruchs 3 eine Druckfeder vorgesehen.So that the plate is always returned to the switched-on position, a compression spring is provided in accordance with the characterizing features of claim 3.

Es besteht auch die Möglichkeit, an der Schaltwelle einen federnden Stift anzubringen, mit dem die Schaltwelle mit der Platte gekuppelt ist, wie in den kennzeichnenden Merkmalen des Anspruchs 4 angegeben ist. In diesem Fall ist die Platte zweckmäßig bezogen auf das Gehäuse, welches den Fehlerstrom- oder Differenzstromschutzschalter umgibt, gemäß Anspruch 5 drehbar gelagert.There is also the possibility of attaching a resilient pin to the selector shaft, by means of which the selector shaft is coupled to the plate, as indicated in the characterizing features of claim 4. In this case, the plate is expediently rotatably mounted in relation to the housing, which surrounds the residual current or residual current circuit breaker.

Weitere vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung sind den weiteren Unteransprüchen zu entnehmen.Further advantageous refinements and improvements of the invention can be found in the further subclaims.

Anhand der Zeichnung, in der zwei Ausführungsbeispiele der Erfindung dargestellt sind, sollen die Erfindung sowie weitere vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung näher erläutert und beschrieben werden.On the basis of the drawing, in which two exemplary embodiments of the invention are shown, the invention and further advantageous refinements and improvements of the invention are to be explained and described in more detail.

Es zeigen:

Figuren 1 bis 4
je eine Einsicht von der Seite in einer ersten Ausführungsform einer Prüftastenanordnung, in unterschiedlichen Schaltstellungen: Kontaktberührung, Einschalt-, Aus- und Ausschaltstellung,
Figur 5
eine Aufsicht in Pfeilrichtung V auf die Prüftastenanordnung gemäß Figur 1,
Figur 6
eine Aufsicht gemäß Pfeilrichtung VI auf die Anordnung nach Figur 1 und
Figuren 7 bis 9
je eine Seitenansicht ähnich der der Figuren 1 bis 4 einer weiteren Ausführungsform der Prüftastenanordnung in den Stellungen Kontaktberührung, Ein- und Ausstellung.
Show it:
Figures 1 to 4
one view from the side in a first embodiment of a test button arrangement, in different switch positions: contact, switch on, switch off and switch off,
Figure 5
2 shows a top view in the direction of arrow V of the test button arrangement according to FIG. 1,
Figure 6
a supervision in the direction of arrow VI on the arrangement of Figure 1 and
Figures 7 to 9
A side view similar to that of Figures 1 to 4 of a further embodiment of the test button arrangement in the positions of contact contact, on and off.

Die Figuren 1 bis 4 zeigen jeweils eine Einsicht in ein elektrisches Schaltgerät, vorzugsweise in einen Fehlerstromschutzschalter, wobei die für die Erfindung wichtigen Teile gezeichnet und die für die Erfindung weniger wichtigen Teile weggelassen sind. Das Schaltgerät, oder genauer der Fehlerstromschutzschalter 10 besitzt ein Gehäuse 11, von dem lediglich der vordere Teil, also der Teil, der der Befestigungsebene entgegengesetzt ist, zu sehen ist. Das Gehäuse 11 besitzt in der Frontwand 12 eine Öffnung 13. Innerhalb des Gehäuses 11 befindet sich parallel zu der Seitenwandung 14 eine Führungsplatte 15, an der eine Verschiebeplatte 16 geführt ist, die an der der Frontwand zugewandten Kante eine senkrecht dazu verlaufende rechteckförmige Fahne 17 aufweist, deren der Frontwand 12 zugewandte Fläche 18 mit unterschiedlichen Farbschichten beschichtet ist. An der entgegengesetzt liegenden Kante 19 ist ein bumerangförmiger Fortsatz 20 senkrecht dazu angeordnet, wobei der Fortsatz 20 über eine senkrecht zur Führungsplatte verlaufende Verbindungslasche 21 an der Kante 19 angeformt ist. Der Fortsatz 20 verläuft dabei in Verlängerung der in der Zeichnung Figur 1 links befindlichen Kante 22, die senkrecht zur Frontwand 12 verläuft.FIGS. 1 to 4 each show an insight into an electrical switching device, preferably a residual current circuit breaker, the parts that are important for the invention being drawn and the parts that are less important for the invention are omitted. The switching device, or more precisely the residual current circuit breaker 10, has a housing 11, of which only the front part, that is to say the part which is opposite the mounting plane, can be seen. The housing 11 has an opening 13 in the front wall 12. Inside the housing 11 there is a guide plate 15 parallel to the side wall 14, on which a sliding plate 16 is guided, which on the the edge facing the front wall has a rectangular flag 17 running perpendicular thereto, the surface 18 facing the front wall 12 is coated with different layers of paint. On the opposite edge 19, a boomerang-shaped extension 20 is arranged perpendicularly thereto, the extension 20 being formed on the edge 19 by means of a connecting lug 21 running perpendicular to the guide plate. The extension 20 extends in the extension of the edge 22 on the left in the drawing in FIG. 1, which extends perpendicular to the front wall 12.

Unterhalb des Fortsatzes 20 befindet sich ein festes Kontaktstück 23, welches an einer Kontaktstückhalteschiene 24 befestigt ist und das mit einem beweglichen Kontaktstück 25 zusammenwirkt, welches an einem Kontakthebel 26 befestigt ist, das in einem nicht näher dargestellten und lediglich durch Umrisse angedeuteten Kontakthebelträger 27 geführt ist, wobei der Kontakthebel 26 den Kontakthebelträger 27 durchgreift und an der entgegengesetzt liegenden, der Frontwand zugewandten Seite den Kontakthebelträger 27 in der Einschaltstellung überragt, wie durch die Bezugsziffer 26 in diesem Bereich angedeutet. An dem Kontakthebelträger 27 ist eine parallel zu der Kontaktträger-Drehachse 28 verlaufende Nase 29 angeformt, gegen die das freie Ende des Vorsprunges 20 zum Anliegen kommt, wie auch aus der Figur 6 zu ersehen.Below the extension 20 there is a fixed contact piece 23 which is fastened to a contact piece holding rail 24 and which interacts with a movable contact piece 25 which is fastened to a contact lever 26 which is guided in a contact lever carrier 27 which is not illustrated in any more detail and is only indicated by outlines , wherein the contact lever 26 passes through the contact lever carrier 27 and projects beyond the contact lever carrier 27 in the switched-on position on the opposite side facing the front wall, as indicated by the reference number 26 in this area. A lug 29, which runs parallel to the contact carrier axis of rotation 28 and against which the free end of the projection 20 comes to rest, is formed on the contact lever carrier 27, as can also be seen from FIG.

Die Platte 16 besitzt eine Ausnehmung 30, in die eine Druckfeder 31 eingesetzt ist, die gegen einen ortsfesten Anschlag 32 anliegt und die Platte 16 dauernd in Pfeilrichtung P in der Zeichnung nach links beaufschlagt.The plate 16 has a recess 30, into which a compression spring 31 is inserted, which rests against a stationary stop 32 and acts on the plate 16 continuously in the direction of arrow P in the drawing to the left.

Die der Kante 22 entgegengesetzt liegende Kante 33 besitzt einen senkrecht dazu vorragenden Vorsprung 34, an dem senkrecht dazu ein Steg 35 angeformt ist; der Steg 35 verläuft senkrecht zur Platte und senkrecht zu der vorderen Frontwand 12.The edge 33 lying opposite the edge 22 has a projection 34 projecting perpendicularly thereto, on which a web 35 is formed perpendicularly thereto; the web 35 runs perpendicular to the plate and perpendicular to the front front wall 12.

Das Gehäuse 11 besitzt auf der in der Figur 1 rechts gelegenen Seite einen Rücksprung 36, durch den eine Ausnehmung 37 gebildet ist, in der eine Prüftaste 38 senkrecht zur Frontwand 12 geführt ist, wobei die Prüftaste 38 einen senkrecht zur Frontwand 12 verlaufenden Arm 39 aufweist, an dessen freiem Ende eine nach innen vorspringende Nase 40 angeformt ist, die hinter einen Anschlag 41 am Gehäuse 11 greift, so daß der Bewegungsweg der Prüftaste 38 in Pfeilrichtung F begrenzt ist.On the right side in FIG. 1, the housing 11 has a recess 36, through which a recess 37 is formed, in which a test button 38 is guided perpendicular to the front wall 12, the test button 38 having an arm 39 running perpendicular to the front wall 12 , at the free end of which an inwardly projecting nose 40 is formed, which engages behind a stop 41 on the housing 11, so that the movement path of the test button 38 in the direction of the arrow F is limited.

Die Prüftaste 38 besitzt eine senkrecht zu der vorderen Frontwand 12 verlaufende Stange 42.The test button 38 has a rod 42 running perpendicular to the front front wall 12.

Innerhalb des Fehlerstromschutzschalters ist ortsfest ein Federträger 43 vorgesehen, der einen Zapfen 44 aufweist, der parallel zur Drehachse 28 verläuft und um den herum eine Kontaktfeder 45 schraubenfederartig herumgewickelt ist.Within the residual current circuit breaker, a spring support 43 is provided in a stationary manner, which has a pin 44 which runs parallel to the axis of rotation 28 and around which a contact spring 45 is wound in the manner of a coil spring.

Einer der freien Schenkel, nämlich der Schenkel 46 der Kontaktfeder 45 übergreift den inneren Bereich des Fehlerstromschutzschalters und besitzt ein U-förmiges Ende 47, mit einem an den Schenkel 46 anschließenden Quersteg 48 und einem an dessen freiem Ende angeformten, parallel und unter einem Winkel zu dem Schenkel 46 nach unten zum Kontakthebel 26 abgebogenen Längssteg 49, wobei der Biegewinkel alpha so bemessen ist, daß das freie Ende des Längssteges 49 dauernd gegen das kontaktstückabseitige Ende des Kontakthebels 26 federnd anliegt. Auf diese Weise erhält man eine elektrisch-leitende Verbindung zwischen dem Kontakthebel und dem schraubenfederartigen Bereich 45a.One of the free legs, namely the leg 46 of the contact spring 45 overlaps the inner region of the residual current circuit breaker and has a U-shaped end 47, with a cross bar 48 adjoining the leg 46 and a molded part at its free end, parallel and at an angle the leg 46 down to the contact lever 26 bent longitudinal web 49, the bending angle alpha being such that the free end of the longitudinal web 49 continuously against the contact piece End of the contact lever 26 resiliently. In this way, an electrically conductive connection is obtained between the contact lever and the helical spring-like area 45a.

Der Federträger 43, der in der Figur 5 in Aufsicht gezeichnet ist, besitzt eine parallel zur Frontwand 12 verlaufende Plattform 50, auf der Nasen 51 angeformt sind, die einen Leitungsdraht 52 führen, der auf der Plattform parallel zu dem Führungszapfen 44 verläuft. Der Zapfen 44 ist an einer Haltewand 53 angeformt, die senkrecht zur Plattform in Richtung zur Frontwand verläuft, wobei die Haltewand 53 parallel zu der Platte 16 ausgerichtet ist.The spring support 43, which is shown in a top view in FIG. 5, has a platform 50 which runs parallel to the front wall 12 and on which tabs 51 are formed which guide a lead wire 52 which runs parallel to the guide pin 44 on the platform. The pin 44 is formed on a holding wall 53 which runs perpendicular to the platform in the direction of the front wall, the holding wall 53 being aligned parallel to the plate 16.

Das der Haltewand 53 benachbarte Ende des Leitungsdrahtes 52 ist parallel dazu in einem Schenkelende 54 abgebogen, welches Schenkelende ebenso auf der Plattform aufliegt und mittels einer Haltenase 55 festgehalten ist.The end of the lead wire 52 adjacent to the holding wall 53 is bent parallel to it in a leg end 54, which leg end also rests on the platform and is held by means of a holding lug 55.

Das andere Ende des schraubenfederförmigen Bereiches 45a der Kontaktfeder 45 ist tangential zum Zapfen 44 auf der der Plattform 50 entgegengesetzt liegenden Seite, also oberhalb des Zapfens 44 von dem Bereich 45a weggebogen und parallel zu der Zapfenachse des Zapfens 44 als bewegliches Kontaktelement 56 abgebogen.The other end of the helical spring-shaped area 45a of the contact spring 45 is tangent to the pin 44 on the side opposite the platform 50, i.e. above the pin 44, bent away from the area 45a and bent parallel to the pin axis of the pin 44 as a movable contact element 56.

Das bewegliche Kontaktelement 56 befindet sich, wie in den Figuren 1 bis 4 ersichtlich ist, im Bewegungsreich der Stange 42, so daß es dann, wenn auf die Prüftaste 38 entgegen der Pfeilrichtung F gedrückt wird, gegen das als festes Kontaktstück dienende Schenkelende 54 des Leitungsdrahtes 52 angedrückt wird.The movable contact element 56 is, as can be seen in Figures 1 to 4, in the range of motion of the rod 42, so that when the test button 38 is pressed against the arrow direction F, it acts against the leg end 54 of the lead wire serving as a fixed contact piece 52 is pressed.

Wie aus der Figur 5 ersichtlich ist, ist der Leitungsdraht 52 ein Bein eines Widerstandes 57, dessen anderes Bein 58 entweder mit einem Phasenleiter - wenn die Schiene 24 im Leitungspfad des Nulleiters des Fehlerstromschutzschalters liegt - oder mit dem Nulleiter, wenn die Schiene 24 im Leitungspfad eines Phasenleiters liegt, verbunden ist.As can be seen from FIG. 5, the lead wire 52 is a leg of a resistor 57, the other leg 58 of which either has a phase conductor - if the rail 24 is in the line path of the neutral conductor of the residual current circuit breaker - or the neutral conductor if the rail 24 is in the line path a phase conductor is connected.

Die Figur 1 zeigt den Fehlerstromschutzschalter in dem Zustand, wenn beim Einschaltvorgang das bewegliche Kontaktstück 25 gerade das feste Kontaktstück 23 berührt. Dabei liegt das freie Ende des Fortsatzes 20 an der Nase 29 an.FIG. 1 shows the residual current circuit breaker in the state when the movable contact piece 25 just touches the fixed contact piece 23 when it is switched on. The free end of the extension 20 bears against the nose 29.

Die Figur 2 zeigt die Einschaltstellung, bei der der Kontakthebel in der Zeichnung Figur 2 links von der Drehachse 28 liegt; man erkennt, daß der Fortsatz 20 frei von der Nase 29 ist.Figure 2 shows the switch-on position, in which the contact lever in the drawing Figure 2 is to the left of the axis of rotation 28; it can be seen that the extension 20 is free of the nose 29.

Wenn der Schalter in Ausschaltstellung geht, dann bewegt sich der Kontakthebel 26 und zusammen mit dem Kontakthebelträger auch die Nase 29 in Ausschaltstellung, wobei die Nase 29 gegen den Fortsatz 20 anschlägt und den Fortsatz 20 und damit die Platte 16 entgegen dem Druck der Druckfeder 31 nach rechts drückt, so daß der Vorsprung 34 unter einen Absatz 59 an der Stange 42 gelangt; der Absatz 59 ist im Bereich der Drückfläche 38a der Prüftaste 38 parallel zur Stange 42 angeformt und zwar dergestalt, daß der Absatz 59 sich exakt oberhalb des Bewegungsweges des Vorsprunges 34 befindet.When the switch goes into the off position, the contact lever 26 and together with the contact lever carrier also the nose 29 moves into the off position, the nose 29 striking against the extension 20 and the extension 20 and thus the plate 16 against the pressure of the compression spring 31 presses to the right so that the projection 34 comes under a shoulder 59 on the rod 42; the shoulder 59 is formed in the area of the pressing surface 38a of the test button 38 parallel to the rod 42 and in such a way that the shoulder 59 is located exactly above the movement path of the projection 34.

Man erkennt aus der Figur 3, daß in der sog. Ausstellung der Absatz 59 gegen den Vorsprung 34 zum Anliegen kommt und daß der Schenkel bzw. das bewegliche Kontaktelement 56 nicht gegen den Schenkel bzw. das Schenkelende 54 des Leitungsdrahtes angedrückt werden kann, wie es bei der Ausführung nach Figur 1 der Fall ist.It can be seen from FIG. 3 that in the so-called exhibition, the shoulder 59 comes to rest against the projection 34 and that the leg or the movable contact element 56 cannot be pressed against the leg or the leg end 54 of the lead wire, as is the case in the embodiment according to FIG. 1.

Die Figur 4 zeigt den Fehlerstromschutzschalter in Ausschaltstellung; man erkennt auch hier, daß der Absatz 59 dann, wenn die Prüftaste 38 nach unten gedrückt werden soll, gegen den Vorsprung 34, anschlägt, so daß der Prüftastenkontakt 54/56 nicht geschlossen werden kann.Figure 4 shows the residual current circuit breaker in the off position; it can also be seen here that the paragraph 59 hits the projection 34 when the test button 38 is to be pressed down, so that the test button contact 54/56 cannot be closed.

Aus der Figur 6 ist ersichtlich, daß die Platte 16 an ihrer oberen und unteren Kante jeweils zwei Führungsnasen 60 und 6-1 aufweist, die die Führungsplatte 15 oben und unten hintergreifen, so daß die Platte 16 parallel zu den oberen und unteren Kanten, die ebenfalls parallel zur vorderen Frontwand verlaufen, verschiebbar ist.From Figure 6 it can be seen that the plate 16 has at its upper and lower edges two guide lugs 60 and 6-1, which engage behind the guide plate 15 above and below, so that the plate 16 parallel to the upper and lower edges, the also run parallel to the front wall, can be moved.

Eine weitere Ausführungsform der Erfindung zeigen die Figuren 7 bis 9. Für gleiche Teile sollen die gleichen Bezugsziffern verwendet werden.A further embodiment of the invention is shown in FIGS. 7 to 9. The same reference numbers are to be used for the same parts.

Innerhalb des Gehäuses 11 befindet sich die Führungsplatte 15, die Drehachse 28 für den Kontakthebelträger 27, an dem der Kontakthebel 26 angebracht ist, der das bewegliche Kontaktstück 25 trägt, welches mit dem festen Kontaktstück 23 in Berührung gelangt.Within the housing 11 is the guide plate 15, the axis of rotation 28 for the contact lever carrier 27, to which the contact lever 26 is attached, which carries the movable contact piece 25, which comes into contact with the fixed contact piece 23.

Man erkennt in der Ausführung nach Figur 7, daß anstatt der Verschiebbaren Platte 16 eine Verdrehplatte 70 über eine Achse 71 an der Führungsplatte 15 drehbar angelenkt ist. An der frontwandseitigen Kante der Verdrehplatte 70 ist senkrecht zu ihr eine der Fläche 18 entsprechende Lasche 72 befestigt; senkrecht zu der Verbindungslinie zwischen der Lasche 72 und der Achse 71 ist auf der den Kontaktstücken 25 und 23 entgegengesetzt liegenden Kante der Verdrehplatte ein Fortsatz 73 angeformt, der die gleiche Funktion besitzt wie der Vorsprung 34. Der Fehlerstromschutzschalter 10 besitzt die Prüftaste 38 mit der Stange 42 und dem Absatz 59.It can be seen in the embodiment according to FIG. 7 that instead of the displaceable plate 16, a twisting plate 70 is pivotably articulated on the guide plate 15 via an axis 71. On the front wall-side edge of the rotating plate 70, a tab 72 corresponding to the surface 18 is fastened perpendicular to it; perpendicular to the connecting line between the tab 72 and the axis 71 is on the contact pieces 25 and 23 opposite edge of the rotating plate an extension 73 is formed, which has the same function as the projection 34. The residual current circuit breaker 10 has the test button 38 with the rod 42 and the paragraph 59th

An dem distalen Ende der Verdrehplatte 72 ist ein Loch 74 vorgesehen, in dem ein Ende eines Kupplungshebels 75 eingehängt ist, wogegen das andere Ende an dem Kontakthebelträger 27 angelenkt ist. Der Schenkel 46 der Feder 45, der nur teilweise eingezeichnet ist, ist so ausgebildet und mit dem beweglichen Kontaktstück 23 verbunden wie oben beschrieben.At the distal end of the rotating plate 72, a hole 74 is provided, in which one end of a coupling lever 75 is suspended, whereas the other end is articulated on the contact lever carrier 27. The leg 46 of the spring 45, which is only partially shown, is designed and connected to the movable contact piece 23 as described above.

Die Figur 7 zeigt das Schaltgerät in Kontaktberührungsstellung, also in derjenigen Stellung, in der beim Einschaltvorgang das bewegliche Kontaktstück 25 gerade das feste Kontaktstück 23 berührt. Beim weiteren Einschaltvorgang verändert sich lediglich die Stellung des Kontakthebels 26, während die Stellung der Verdrehplatte 70 unverändert ist.FIG. 7 shows the switching device in the contact contact position, that is to say in the position in which the movable contact piece 25 just touches the fixed contact piece 23 during the switch-on process. During the further switch-on process, only the position of the contact lever 26 changes, while the position of the rotating plate 70 is unchanged.

In der sog. Einschaltstellung oder Kontaktberührungsstellung der Figuren 8 bzw. 7 kann die Prüftaste 38 gedrückt werden, so daß der Schenkel 56 der Kontaktfeder 45 mit dem Schenkel 54 des Leitungsdrahtes 52 mit dem Widerstand 57 in Verbindung gebracht werden kann und ein Stromkreis zwischen dem Kontakthebel 26 und einem entsprechenden Leiter geschlossen wird.8 or 7, the test button 38 can be pressed so that the leg 56 of the contact spring 45 can be connected to the leg 54 of the lead wire 52 with the resistor 57 and a circuit between the contact lever 26 and a corresponding conductor is closed.

Bei der Ausschaltstellung, bei der der Kontakthebelträger über das Kupplungsteil bzw. den Kupplungshebel 75 die Verdrehplatte 70 in Uhrzeigersinn verschwenkt, gelangt der Fortsatz 73 unter den Absatz 59 der Prüftaste 38, so daß der Fortsatz 73 ein vollständiges Hineindrücken der Prüftaste 38 behindert bzw. verhindert.In the switch-off position, in which the contact lever carrier pivots the rotating plate 70 clockwise via the coupling part or the coupling lever 75, the extension 73 comes under the paragraph 59 of the test button 38, so that the extension 73 hampers or prevents the test button 38 from being pushed in completely.

Oben ist erwähnt, daß sowohl die Platte 16 als auch die Verdrehplatte 70 senkrecht dazu je eine Lasche 17 bzw. 72 aufweisen. Diese Laschen können mit unterschiedlichen Farben beschichtet sein, beispielsweise kann die Fläche 17 links von der Mittellinie 17a grün und die Fläche rechts davon rot beschichtet sein, so daß im Einschaltzustand die rot beschichtete Fläche durch die Öffnung 13 sichtbar ist, wogegen im Ausschaltzustand die grüne Fläche erkennbar ist. In gleicher Weise kann auch die Lasche 72 beschichtet sein, so daß durch die Öffnung 13 im Einschaltzustand rot und im Ausschaltzustand grün signalisiert werden kann.Above it is mentioned that both the plate 16 and the rotating plate 70 have a tab 17 and 72 perpendicular to it, respectively. These tabs can be coated with different colors, for example the surface 17 to the left of the center line 17a can be coated in green and the surface to the right of it can be coated in red, so that the red-coated surface is visible through the opening 13 in the switched-on state, whereas the green surface in the switched-off state is recognizable. In the same way, the tab 72 can also be coated, so that the opening 13 can signal red in the on state and green in the off state.

Claims (10)

  1. Test key arrangement for an earth-leakage current circuit-breaker or differential-current circuit-breaker (10), having a test key (38) which can be displaced perpendicular to the mounting plane of the circuit-breaker (10), can be operated from the front side averted from the mounting point and acts on a movable test contact piece (56) by means of which a test circuit is closed or opened, and having an indicator (17) which indicates the position of the movable switching contact pieces (25) of the circuit-breaker (10), the indicator (17) having a planar first shoulder (17) which can be moved in front of a window (13) arranged in the region of the front side, characterised in that the indicator (17) comprises a plate (16, 70) which can be operated and adjusted by the switching contact pieces (23, 25) during switching and has a second shoulder (34, 73) which during a disconnection operation passes into the path of motion of the test key (38) and thus prevents operation of the test key and switching on of the test circuit.
  2. Test key arrangement according to Claim 1, having a control shaft which supports the switching contact pieces, characterised in that the plate (16) has an extension (20) which interacts with a projection (29) which is arranged on the control shaft (28) and acts on the extension during disconnection and moves the plate in the direction of the disconnected position.
  3. Test key arrangement according to Claim 1 or 2, characterised in that the plate (16) can be displaced by the force of a compression spring (31), the force of the compression spring pressurising the plate in the direction of the switched-on position.
  4. Test key arrangement according to one of the preceding claims, characterised in that a resilient pin (75) which is coupled to the plate (70) is mounted on the control shaft.
  5. Test key arrangement according to one of the preceding claims, characterised in that the plate (70) is mounted in a rotatable fashion fixed with reference to the housing.
  6. Test key arrangement according to one of the preceding claims, characterised in that the plate (70) is mounted on a board (15).
  7. Test key arrangement according to one of the preceding claims, characterised in that a snap-fit projection (71) which - forming a bearing - can snap into place in a recess in the board is integrally formed on the plate (70).
  8. Test key arrangement according to one of the preceding claims, characterised in that the plate has a recess which is formed by two lugs or one hole (74) and in which the resilient pin engages.
  9. Test key arrangement according to one of the preceding claims, characterised in that the movable test contact piece is formed by an end (56) of a helical spring segment (45) whose other end is pressed resiliently on a switching contact piece.
  10. Test key arrangement according to one of the preceding claims, characterised in that the test circuit has a wire element (52) which is connected to one end of a resistance element (57) and forms the fixed test contact piece interacting with the movable test contact piece (56).
EP93105552A 1992-04-09 1993-04-03 Test button device for an earth fault circuit breaker or a differential current circuit breaker Expired - Lifetime EP0565008B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4211915 1992-04-09
DE4211915A DE4211915C2 (en) 1992-04-09 1992-04-09 Test button arrangement for a residual current or residual current circuit breaker

Publications (2)

Publication Number Publication Date
EP0565008A1 EP0565008A1 (en) 1993-10-13
EP0565008B1 true EP0565008B1 (en) 1996-05-22

Family

ID=6456451

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93105552A Expired - Lifetime EP0565008B1 (en) 1992-04-09 1993-04-03 Test button device for an earth fault circuit breaker or a differential current circuit breaker

Country Status (5)

Country Link
EP (1) EP0565008B1 (en)
CN (1) CN1031737C (en)
AT (1) ATE138496T1 (en)
DE (2) DE4211915C2 (en)
ES (1) ES2090752T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105510818B (en) * 2015-12-30 2019-02-05 三信国际电器上海有限公司 Breaker and its experimental rig and method
CN109507573B (en) * 2018-07-13 2021-06-01 西安益翔航电科技有限公司 High-low temperature performance testing device for circuit breaker

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1059094B (en) * 1957-10-04 1959-06-11 Voigt & Haeffner Ag Multipole circuit breaker, especially installation circuit breaker
DE1152745B (en) * 1961-11-15 1963-08-14 Emil Quermann Test device for circuit breaker
FR2437692A1 (en) * 1978-09-28 1980-04-25 Merlin Gerin Manually operated circuit breaker with overload cut=out - has earth fault current overload device and reset units as separate components which may be put together later
FR2584531B1 (en) * 1985-07-05 1989-01-13 Telemecanique Electrique CURRENT LIMITER PROVIDED WITH A DISPLAY ELEMENT
FR2609209B1 (en) * 1986-12-29 1994-05-20 Merlin Et Gerin BIPOLAR DIFFERENTIAL SWITCH WITH FAULT INDICATOR
DE4011680A1 (en) * 1990-04-11 1991-10-17 Felten & Guilleaume Energie TEST DEVICE FOR CURRENT CIRCUIT BREAKERS

Also Published As

Publication number Publication date
DE59302648D1 (en) 1996-06-27
ES2090752T3 (en) 1996-10-16
CN1031737C (en) 1996-05-01
ATE138496T1 (en) 1996-06-15
DE4211915A1 (en) 1993-10-14
EP0565008A1 (en) 1993-10-13
DE4211915C2 (en) 1995-03-16
CN1080430A (en) 1994-01-05

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