EP0110082B1 - Driving device for a three-position electrical switch - Google Patents

Driving device for a three-position electrical switch Download PDF

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Publication number
EP0110082B1
EP0110082B1 EP83110269A EP83110269A EP0110082B1 EP 0110082 B1 EP0110082 B1 EP 0110082B1 EP 83110269 A EP83110269 A EP 83110269A EP 83110269 A EP83110269 A EP 83110269A EP 0110082 B1 EP0110082 B1 EP 0110082B1
Authority
EP
European Patent Office
Prior art keywords
detent
lever
switch
spring
rotation
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
Application number
EP83110269A
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German (de)
French (fr)
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EP0110082A3 (en
EP0110082A2 (en
Inventor
Rainer Poth
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.)
Siemens AG
Original Assignee
Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT83110269T priority Critical patent/ATE34874T1/en
Publication of EP0110082A2 publication Critical patent/EP0110082A2/en
Publication of EP0110082A3 publication Critical patent/EP0110082A3/en
Application granted granted Critical
Publication of EP0110082B1 publication Critical patent/EP0110082B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3047—Power arrangements internal to the switch for operating the driving mechanism using spring motor adapted for operation of a three-position switch, e.g. on-off-earth

Definitions

  • the invention relates to a drive for an electrical three-position switch according to the preamble of the claim.
  • a drive of the type mentioned in the preamble of claim is already known, which requires large actuation forces and, in the event of tripping by a fuse, requires a high tripping force. Its storage drive assembly takes up a lot of space. Switching from ON to OFF is only possible via the storage drive assembly, but not via the spring drive assembly (operating instructions for ring switchgear type NSM from October 1969, from Brush Switchgear Ltd. Englang).
  • the object of the invention is to design the drive of the type mentioned in the preamble of the claim in such a way that it requires only slight actuating and triggering forces, takes up little space overall and in the case of a circuit triggered by the activation of a fuse or actuation of a shunt release from ON to OFF the storage drive assembly and with direct manual operation via the spring drive assembly can be switched.
  • the object is achieved according to the invention by the training specified in the characterizing part of the claim.
  • the solution found has the advantage that a switching station only has to carry out the same switching operations, but not different switching operations.
  • 1 denotes a switching axis which can be rotated from a central position OFF in one direction to an ON position and in the opposite direction to an EARTH position.
  • the switching axis 1 when the switching axis 1 is turned from the OFF position to the left, that is to say counterclockwise, the device is switched on and switched to EARTH in the opposite direction.
  • the positions ON and EARTH are interchangeable.
  • a socket 2 On the switching axis 1, a socket 2 is mounted, which is coaxially wrapped by a spiral spiral spring 3.
  • the spiral spring 3 has bent leg ends 3a, 3b which are separated from one another by a driver 4 arranged between them and a holder 5 arranged below the driver 4.
  • the clamping lever 6 is the point of attack for a handle, not shown.
  • the holder 5 on the other hand, is fastened together with a pawl carrier 8, which carries two pawls 9, 10, on the switching axis 1.
  • the pair of support rollers 12, 12a is assigned to the switching position OFF shown in FIG.
  • the support roller pair 13, 13a defines the switch position ON, while the support roller pair 14, 14a is provided for the switch position EARTH.
  • the socket 2 can be rotated by means of the clamping lever 6 from OFF in the ON direction and from OFF in the EARTH direction about the switching axis 1 and vice versa.
  • the pawl 10 After a sufficient pre-tensioning of the spiral spiral spring 3 for engagement, that is to say after a predetermined angle of rotation of the spiral spring leg 3b, the pawl 10, which is in the direction of rotation, is pivoted free of the support roller 12a against a spring force 10a by the link lever 7 via a second steering rod 16.
  • the flexible spring leg 3a When switching from OFF to EARTH, the flexible spring leg 3a is carried by the driver 4 and the flexible spring leg 3b is held by the holder 5.
  • the pawls 9, 10 extend, as before, between the pair of support rollers 12, 12a.
  • the support 5 is also removed from the holder.
  • the switching axis 1 is now abruptly rotated by the bending spring leg 3b previously held by the holder 5 into the switch position EARTH.
  • the pawls 9, 10 extend between the pair of support rollers 14, 14a.
  • the pivoting back from the deflected position of the pawls into the respective position between the pairs of support rollers 12, 12a; 13, 13a; 14, 14a provide the spring forces 9a, 10a.
  • crank lever 20 is also fastened on the switching axis 1.
  • the crank lever 20 can be pivoted together with the shift axis 1 into the shift positions OFF, EARTH, ON and vice versa.
  • the full outline of the crank lever 20 shows the switch position OFF, while the dash-dotted outline of the crank lever 20 shows the switch positions ON and EARTH.
  • crank lever 20 is articulated on a shift rod 21.
  • the articulation point is designated by 22.
  • the shift rod 21 carries a support roller 23 and an opening spring 24.
  • the switch-off spring 24 is attached to the upper end of the shift rod 21 and to a first pin 26 of a rocker 25 which can be pivoted about a pivot point 25a.
  • the first bolt 26 engages in a first slot 27 (FIG. 2) of the shift rod 21 and in a tab 28 which has a longitudinal slot 28a.
  • a second bolt 29 also engages in the tab 28 and also in the second slot 30 of the shift rod 21 and is the axis of rotation for a lever pawl 31.
  • the lever pawl 31 has an arc-shaped pawl shoulder 32.
  • the center 32a of the circular arc of the pawl shoulder 32 is eccentric to the second bolt 29.
  • the lever pawl 31 In addition to the pawl shoulder 32, the lever pawl 31 also has a recessed receptacle 34 for the support roller 23 and carries a cam roller 35.
  • a curve 37 of a link lever 38 which can be pivoted about a fixed pivot point 39, is applied to the cam roller 35 under spring force 36.
  • the free end of the link lever 38 can be locked against deflection by a support pawl 45 and a release pawl 46.
  • the support pawl 45 can be moved out of the locked position by the crank lever 20 against spring force 45a via a connecting bracket 47.
  • the release pawl 46 can be moved out of its locked position against spring force 46a by a release rod 48.
  • the trigger rod 48 is coupled to a device (not shown) for triggering by a shunt release and triggering by an indicator of a high-voltage high-performance fuse.
  • a pawl 58 which is pivotable with spring force 55 about a pivot 56 under a stationary stop 57 is mounted.
  • the pawl 58 can be pivoted onto a hook 31a of the lever pawl 31.
  • the end of the pawl 58 facing the fixed stop 57 lies on an arc of a circle eccentric to the pivot 56.
  • the center of the circular arc is designated 58a.
  • FIG. 2 which shows the storage drive in the OFF position, switch-off spring 24 tensioned:
  • the crank lever 20 is in the middle position OFF.
  • the link lever 38 is locked against deflection by the support pawl 45 and the release pawl 46.
  • the hook 31a of the lever pawl 31 has just turned under the lower end of the pawl 58.
  • the crank lever 20 has moved from its middle position into the lower position when switching from OFF to ON and has pulled the shift rod 21 together with the support roller 23 downward.
  • the rocker 25 is also pivoted downward via the second bolt 29, the tab 28 and the first bolt 26.
  • the pawl 58 is pulled against a stop 25b by means of the spring force 55.
  • crank lever 20 has also taken the connecting plate 47 downward and, by corresponding arrangement of a longitudinal slot 47a, only swiveled the support pawl 45 out of its locked position against the spring force 45a shortly before reaching the ON position.
  • the support roller 23 lies against the upper end of the longitudinal slot 28a, so that the tab 28 is moved upwards.
  • the tab 28 takes the lever pawl 31 upwards, the rocker 25 being pivoted into the OFF position via the first bolt 26.
  • the pawl 58 is placed against the fixed stop 57 towards the end of the swivel path of the rocker 25 and here engages behind the hook 31a.
  • switch-off spring 24 in which the accumulator drive is released in the OFF position, switch-off spring 24:
  • switch-off spring 24 tensioned, after OFF by means of the switch-off spring 24, the trigger rod 48 is pressed upward against the spring force 46a and the trigger pawl 46 has been pivoted out of its locked position.
  • the link lever 38 has thereby become free and swung out to the left against the spring force 36.
  • the lever pawl 31 has lost its support on the link lever 38 and has followed the link lever 38 around the second bolt 29, under the pressure of the opening spring 24 acting on the pawl shoulder 32.
  • the lever pawl 31 has released the support roller 23 and has been moved upward by the upward-moving lower end of the switch-off spring 24 via the second bolt 29, the tab 28 and the first bolt 26.
  • the first bolt 26, the tab 28 and the second bolt 29 also remain.
  • switch-off spring 24 Since the switch-off spring 24 is suspended at one end in the shift rod 21 and at the other end in the first bolt 26 of the rocker arm 25, it is tensioned when the shift rod 21 moves upwards while the spiral spring 3 is released.
  • the support pawl 45 and the release pawl 46 pivot under the spring forces 45a and 46a into their locked position.
  • the switching axis 1 has moved to EARTH while relaxing the spiral spring 3, as described.
  • the crank lever 20 was rotated from its middle position into the upper position and thus the shift rod 21 together with the support roller 23 was pressed upwards.
  • the support roller 23 lies against the upper end of the longitudinal slot 28a.
  • the tab 28 has also been moved up with the shift rod 21.
  • the tab 28 in turn has taken the lever pawl 31 upwards and thereby pivoted the rocker 25 upward into its position EARTH via the first bolt 26.
  • the cam roller 35 still bears against the cam 37 of the link lever 38, which is locked against deflection.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Vending Machines For Individual Products (AREA)
  • Push-Button Switches (AREA)
  • Switches With Compound Operations (AREA)
  • Lock And Its Accessories (AREA)
  • Electromechanical Clocks (AREA)

Abstract

A three-position electrical driving mechanism having a jump-drive sub-assembly, a pivotable actuator and associated spring arrangement for storing energy, a detent arrangement and associated latches for holding the detents in place, a release arrangement for disengaging the detents from the latches, and a storage drive sub-assembly which is operable in response to a blown fuse or an open circuit trip. This switch requires the operator to perform the same switching operation each time the switch is utilized, and therefore errors that occur when an operator must perform several different operations are avoided.

Description

Die Erfindung bezieht sich auf einen Antrieb für einen elektrischen Dreistellungsschalter nach dem Oberbegriff des Patentanspruches.The invention relates to a drive for an electrical three-position switch according to the preamble of the claim.

Es ist bereits ein Antrieb der im Oberbegriff des Patentanspruches genannten Art bekannt, der grosse Betätigungskräfte erfordert und im Falle der Auslösung durch eine Sicherung eine hohe Auslösekraft benötigt. Seine Baugruppe Speicherantrieb nimmt viel Raum in Anspruch. Ein Schaltvorgang von EIN nach AUS ist nur über die Baugruppe Speicherantrieb, nicht jedoch über die Baugruppe Sprungantrieb möglich (Betriebsanleitung für Ringschaltanlagen Typ NSM vom Oktober 1969, der Fa. Brush Switchgear Ltd. Englang).A drive of the type mentioned in the preamble of claim is already known, which requires large actuation forces and, in the event of tripping by a fuse, requires a high tripping force. Its storage drive assembly takes up a lot of space. Switching from ON to OFF is only possible via the storage drive assembly, but not via the spring drive assembly (operating instructions for ring switchgear type NSM from October 1969, from Brush Switchgear Ltd. Englang).

Aufgabe der Erfindung ist es, den Antrieb der im Oberbegriff des Patentanspruches genannten Art so auszubilden, dass er nur geringe Betätigungs-und Auslösekräfte erfordert, insgesamt wenig Raum beansprucht und bei einer durch Ansprechen einer Sicherung oder Betätigen eines Arbeitsstromauslösers ausgelösten Schaltung von EIN nach AUS über die Baugruppe Speicherantrieb und bei direkter Handbetätigung über die Baugruppe Sprungantrieb schaltbar ist.The object of the invention is to design the drive of the type mentioned in the preamble of the claim in such a way that it requires only slight actuating and triggering forces, takes up little space overall and in the case of a circuit triggered by the activation of a fuse or actuation of a shunt release from ON to OFF the storage drive assembly and with direct manual operation via the spring drive assembly can be switched.

Die gestellte Aufgabe wird erfindungsgemäss durch die im kennzeichnenden Teil des Patentanspruches angegebene Ausbildung gelöst.The object is achieved according to the invention by the training specified in the characterizing part of the claim.

Die gefundene Lösung hat den Vorteil, dass ein Schaltender nur immer gleiche nicht jedoch verschiedene Schalthandlungen vorzunehmen hat.The solution found has the advantage that a switching station only has to carry out the same switching operations, but not different switching operations.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung beispielsweise und rein schematisch dargestellt.An embodiment of the invention is shown in the drawing, for example, and purely schematically.

Es zeigen:

  • Fig. 1 in perspektivischer Darstellung eine Baugruppe Sprungantrieb,
  • Fig. 2 in einer Seitenansicht eine Baugruppe Speicherantrieb in der Stellung AUS, Ausschaltfeder gespannt,
  • Fig. 3 eine Seitenansicht wie in Fig. 2, jedoch Speicherantrieb in der Stellung EIN, Ausschaltfeder gespannt,
  • Fig. 4 eine Seitenansicht wie in Fig. 2, jedoch Speicherantrieb in der Stellung AUS, Ausschaltfeder entspannt,
  • Fig. 5 eine Seitenansicht wie in Fig. 2, jedoch Speicherantrieb in der Stellung ERDE, Ausschaltfeder gespannt.
Show it:
  • 1 is a perspective view of an assembly jump drive,
  • 2 is a side view of a storage drive assembly in the OFF position, opening spring tensioned,
  • 3 shows a side view as in FIG. 2, but with the storage drive in the ON position, the opening spring tensioned,
  • 4 shows a side view as in FIG. 2, but with the storage drive in the OFF position, the release spring relaxed,
  • Fig. 5 is a side view as in Fig. 2, but storage drive in the position EARTH, opening spring tensioned.

Zu Figur 1:Regarding Figure 1:

In der Zeichnung ist mit 1 eine Schaltachse bezeichnet, die von einer mittleren Stellung AUS nach einer Richtung in eine Stellung EIN und in der entgegengesetzten Richtung in eine Stellung ERDE drehbar ist.In the drawing, 1 denotes a switching axis which can be rotated from a central position OFF in one direction to an ON position and in the opposite direction to an EARTH position.

Im dargestellten Beispiel erfolgt bei einer Drehung der Schaltachse 1 aus der Stellung AUS nach links, also entgegengesetzt dem Uhrzeigersinn, eine Einschaltung und in entgegengesetzter Richtung eine Schaltung nach ERDE. Die Positionen EIN und ERDE sind vertauschbar.In the example shown, when the switching axis 1 is turned from the OFF position to the left, that is to say counterclockwise, the device is switched on and switched to EARTH in the opposite direction. The positions ON and EARTH are interchangeable.

Auf der Schaltachse 1 ist eine Buchse 2 gelagert, die koaxiai von einer gewundenen Biegefeder 3 umschlungen ist.On the switching axis 1, a socket 2 is mounted, which is coaxially wrapped by a spiral spiral spring 3.

Die Biegefeder 3 besitzt abgebogene Schenkelenden 3a, 3b, die durch einen zwischen ihnen angeordneten Mitnehmer 4 und einen unterhalb des Mitnehmers 4 angeordneten Halter 5 voneinander getrennt sind.The spiral spring 3 has bent leg ends 3a, 3b which are separated from one another by a driver 4 arranged between them and a holder 5 arranged below the driver 4.

Mit der Buchse 2 sind vereinigt der Mitnehmer 4, ein Spannhebel 6 und ein Kulissenhebel 7. Der Spannhebel 6 ist Angriffsstelle für eine nicht dargestellte Handhabe.With the socket 2, the driver 4, a clamping lever 6 and a link lever 7 are combined. The clamping lever 6 is the point of attack for a handle, not shown.

Der Halter 5 dagegen ist zusammen mit einem Klinkenträger 8, der zwei Klinken 9, 10 trägt, auf der Schaltachse 1 befestigt.The holder 5, on the other hand, is fastened together with a pawl carrier 8, which carries two pawls 9, 10, on the switching axis 1.

Um die Schaltachse 1 sind in einem Kreisbogen 11 Stützrollenpaare 12, 12a; 13, 13a und 14, 14a ortsfest angeordnet. Ein die Stützrollen 12 bis 14a tragendes Element wurde in der Zeichnung, der besseren Übersicht wegen, weggelassen.About the switching axis 1 11 pairs of support rollers 12, 12a; 13, 13a and 14, 14a arranged stationary. An element supporting the support rollers 12 to 14a has been omitted in the drawing for the sake of clarity.

Das Stützrollenpaar 12, 12a ist der in Fig.1, dargestellten Schaltstellung AUS zugeordnet.The pair of support rollers 12, 12a is assigned to the switching position OFF shown in FIG.

Das Stützrollenpaar 13, 13a definiert die Schaltstellung EIN, während das Stützrollenpaar 14, 14a für die Schaltstellung ERDE vorgesehen ist.The support roller pair 13, 13a defines the switch position ON, while the support roller pair 14, 14a is provided for the switch position EARTH.

Die Buchse 2 ist mittels des Spannhebels 6 von AUS in Richtung EIN und von AUS in Richtung ERDE um die Schaltachse 1 und umgekehrt drehbar.The socket 2 can be rotated by means of the clamping lever 6 from OFF in the ON direction and from OFF in the EARTH direction about the switching axis 1 and vice versa.

Wirkungsweise der in Fig. 1 dargestellten Baugruppe Sprungantrieb:Mode of operation of the jump drive assembly shown in FIG. 1:

Aus der dargestellten Schaltstellung AUS wird beim Drehen der Buchse 2 nach EIN der in Drehrichtung gelegene Biegefederschenkel 3b durch den an der Buchse 2 befestigten Mitnehmer 4 mitgenommen, während der Biegefederschenkel 3a vom Halter 5 festgehalten ist und die Klinken 9, 10 zwischen dem Stützrollenpaar 12,12a, wie dargestellt, eingespannt sind.From the illustrated switching position OFF, when the socket 2 is turned ON, the spiral spring leg 3b located in the direction of rotation is carried along by the driver 4 attached to the socket 2, while the spiral spring leg 3a is held by the holder 5 and the pawls 9, 10 between the support roller pair 12, 12a, as shown, are clamped.

Nach einer für eine Einschaltung genügenden Vorspannung der gewundenen Biegefeder 3, also nach einem vorbestimmten Drehwinkel des Biegefederschenkels 3b, wird die in Drehrichtung gelegene Klinke 10 gegen eine Federkraft 10a vom Kulissenhebel 7 über einen zweiten Lenkstab 16 von der Stützrolle 12a freigeschwenkt.After a sufficient pre-tensioning of the spiral spiral spring 3 for engagement, that is to say after a predetermined angle of rotation of the spiral spring leg 3b, the pawl 10, which is in the direction of rotation, is pivoted free of the support roller 12a against a spring force 10a by the link lever 7 via a second steering rod 16.

Sobald die Klinke 10 die Stützrolle 12a verlässt, wird der mit der Klinke 10 freigewordene Halter 5 und die mit dem Halter 5 verbundene Schaltachse 1 durch den bislang vom Halter 5 festgehaltenen Biegefederschenkel 3a, unter Entspannen der gewundenen Biegefeder 3, in der begonnenen Drehrichtung sprunghaft in die Schaltstellung EIN gedreht, in der sich die Klinken 9, 10 nunmehr zwischen dem Stützrollenpaar 13,13a erstrecken.As soon as the pawl 10 leaves the support roller 12a, the holder 5 which has become free with the pawl 10 and the switching axis 1 connected to the holder 5 is suddenly erupted in the direction of rotation started by the spiral spring leg 3a, which was previously held by the holder 5, while relaxing the spiral spring 3 turned the switch position ON, in which the pawls 9, 10 now extend between the pair of support rollers 13, 13a.

Beim Schalten von AUS nach ERDE, wird der Biegefederschenkel 3a vom Mitnehmer 4 mitgenommen und der Biegefederschenkel 3b vom Halter 5 festgehalten. Die Klinken 9, 10 erstrecken sich, wie zuvor, zwischen dem Stützrollenpaar 12, 12a.When switching from OFF to EARTH, the flexible spring leg 3a is carried by the driver 4 and the flexible spring leg 3b is held by the holder 5. The pawls 9, 10 extend, as before, between the pair of support rollers 12, 12a.

Nach Durchlaufen eines auch hier festgelegten Drehweges des Biegefederschenkels 3a, wird die nunmehr in Drehrichtung befindliche Klinke 9 gegen eine Federkraft 9a vom Kulissenhebel 7 über einen ersten Lenkstab 15 von der Stützrolle 12a freigeschwenkt.After passing through a rotational path of the spiral spring leg 3a, which is also determined here, the pawl 9, which is now in the direction of rotation, is pivoted free of the support roller 12a against a spring force 9a by the link lever 7 via a first steering rod 15.

Nachdem die Klinke 9 die Stützrolle 12 verlassen hat, ist auch hier dem Halter 5 die Abstützung genommen. Die Schaltachse 1 wird nunmehr vom bisher vom Halter 5 festgehaltenen Biegefederschenkel 3b sprunghaft in die Schaltstellung ERDE gedreht. In dieser Schaltstellung erstrecken sich die Klinken 9, 10 zwischen dem Stützrollenpaar 14, 14a. Das Zurückschwenken von der ausgelenkten Stellung der Klinken in die jeweilige Stellung zwischen den Stützrollenpaaren 12, 12a; 13, 13a; 14, 14a besorgen die Federkräfte 9a, 10a.After the pawl 9 has left the support roller 12, the support 5 is also removed from the holder. The switching axis 1 is now abruptly rotated by the bending spring leg 3b previously held by the holder 5 into the switch position EARTH. In this switching position, the pawls 9, 10 extend between the pair of support rollers 14, 14a. The pivoting back from the deflected position of the pawls into the respective position between the pairs of support rollers 12, 12a; 13, 13a; 14, 14a provide the spring forces 9a, 10a.

Auf der Schaltachse 1 ist ausser dem Halter 5 und dem Klinkenträger 8 noch ein Kurbelhebel 20 befestigt. Der Kurbelhebel 20 ist zusammen mit der Schaltachse 1 in die Schaltstellungen AUS, ERDE, EIN und umgekehrt schwenkbar. Der volle Umriss des Kurbelhebels 20 zeigt die Schaltstellung AUS, während die strichpunktierten Umrisse des Kurbelhebels 20 die Schaltstellungen EIN und ERDE anzeigen.In addition to the holder 5 and the pawl carrier 8, a crank lever 20 is also fastened on the switching axis 1. The crank lever 20 can be pivoted together with the shift axis 1 into the shift positions OFF, EARTH, ON and vice versa. The full outline of the crank lever 20 shows the switch position OFF, while the dash-dotted outline of the crank lever 20 shows the switch positions ON and EARTH.

In den Fig. 2 bis 5 sind von den in Fig. 1 gezeigten Elementen in Seitenansicht nur die Schaltachse 1 im Schnitt und der Kurbelhebel 20 zu sehen. Diese beiden Teile 1, 20 sind die Verbindungsglieder in Fig. 1 gezeigten Baugruppe Sprungantrieb zu der in den Fig. 2 bis 5 gezeigten Baugruppe Speicherantrieb.2 to 5 of the elements shown in FIG. 1, only the switching axis 1 in section and the crank lever 20 can be seen in side view. These two parts 1, 20 are the connecting links in FIG. 1 assembly jump drive to the storage drive assembly shown in FIGS. 2 to 5.

In der Zeichnung sind lediglich in Fig. 2 sämtliche Bezugszeichen eingetragen, in den Fig. 3 bis 5 dagegen nur diejenigen, die bei der Beschreibung der Wirkungsweise der Schaltvorgänge angegeben sind.In the drawing, all the reference numerals are only entered in FIG. 2, in contrast, only those that are specified in the description of the mode of operation of the switching processes in FIGS.

Wie ersichtlich, ist der Kurbelhebel 20 an einer Schaltstange 21 angelenkt. Der Anlenkpunkt ist mit 22 bezeichnet.As can be seen, the crank lever 20 is articulated on a shift rod 21. The articulation point is designated by 22.

Die Schaltstange 21 trägt eine Stützrolle 23 und eine Ausschaltfeder 24.The shift rod 21 carries a support roller 23 and an opening spring 24.

Die Ausschaltfeder 24 ist am oberen Ende der Schaltstange 21 und an einem ersten Bolzen 26 einer Schwinge 25 eingehängt, die um einen Drehpunkt 25a schwenkbar ist.The switch-off spring 24 is attached to the upper end of the shift rod 21 and to a first pin 26 of a rocker 25 which can be pivoted about a pivot point 25a.

Der erste Bolzen 26 greift in einen ersten Schlitz 27 (Fig. 2) der Schaltstange 21 und in eine Lasche 28 ein, die einen Längsschlitz 28a aufweist.The first bolt 26 engages in a first slot 27 (FIG. 2) of the shift rod 21 and in a tab 28 which has a longitudinal slot 28a.

Ein zweiter Bolzen 29 greift ebenfalls in die Lasche 28 und ausserdem auch in zweiten Schlitz 30 der Schaltstange 21 ein und ist Drehachse für eine Hebelklinke 31.A second bolt 29 also engages in the tab 28 and also in the second slot 30 of the shift rod 21 and is the axis of rotation for a lever pawl 31.

Die Hebelklinke 31 besitzt eine kreisbogenförmige Klinkenschulter 32. Der Mittelpunkt 32a des Kreisbogens der Klinkenschulter 32 liegt exzentrisch zum zweiten Bolzen 29.The lever pawl 31 has an arc-shaped pawl shoulder 32. The center 32a of the circular arc of the pawl shoulder 32 is eccentric to the second bolt 29.

Neben der Klinkenschulter 32 weist die Hebelklinke 31 noch eine eingesenkte Aufnahme 34 für die Stützrolle 23 auf und trägt eine Kurvenrolle 35.In addition to the pawl shoulder 32, the lever pawl 31 also has a recessed receptacle 34 for the support roller 23 and carries a cam roller 35.

An die Kurvenrolle 35 ist unter Federkraft 36 eine Kurve 37 eines Kulissenhebels 38 angelegt, welcher um einen ortsfesten Drehpunkt 39 schwenkbar ist.A curve 37 of a link lever 38, which can be pivoted about a fixed pivot point 39, is applied to the cam roller 35 under spring force 36.

Gegen Auslenken ist das freie Ende des Kulissenhebels 38 durch eine Stützklinke 45 und eine Auslöseklinke 46 sperrbar.The free end of the link lever 38 can be locked against deflection by a support pawl 45 and a release pawl 46.

Die Stützklinke 45 ist über eine Verbindungslasche 47 vom Kurbelhebel 20 gegen Federkraft 45a aus der Sperrlage bewegbar.The support pawl 45 can be moved out of the locked position by the crank lever 20 against spring force 45a via a connecting bracket 47.

Die Auslöseklinke 46 dagegen ist gegen Federkraft 46a durch eine Auslösestange 48 aus ihrer Sperrlage bewegbar. Die Auslösestange 48 ist gekoppelt mit einer nicht dargestellten Einrichtung für eine Auslösung durch einen Arbeitsstromauslöser und Auslösung durch einen Kennmelder einer Hochspannungs-Hochleistungssicherung.The release pawl 46, on the other hand, can be moved out of its locked position against spring force 46a by a release rod 48. The trigger rod 48 is coupled to a device (not shown) for triggering by a shunt release and triggering by an indicator of a high-voltage high-performance fuse.

An der Schwinge 25 ist eine mit Federkraft 55 um einen Drehzapfen 56 unter einen ortsfesten Anschlag 57 schwenkbare Sperrklinke 58 gelagert.On the rocker 25, a pawl 58 which is pivotable with spring force 55 about a pivot 56 under a stationary stop 57 is mounted.

Gegen die Federkraft 55 ist die Sperrklinke 58 auf einen Haken 31a der Hebelklinke 31 schwenkbar.Against the spring force 55, the pawl 58 can be pivoted onto a hook 31a of the lever pawl 31.

Das dem ortsfesten Anschlag 57 zugewandte Ende der Sperrklinke 58 liegt auf einem zum Drehzapfen 56 exzentrischen Kreisbogen. Der Mittelpunkt des Kreisbogens ist mit 58a bezeichnet.The end of the pawl 58 facing the fixed stop 57 lies on an arc of a circle eccentric to the pivot 56. The center of the circular arc is designated 58a.

Wirkungsweise der in den Fig. 2 bis 5 gezeigten Baugruppe Speicherantrieb:Mode of operation of the storage drive assembly shown in FIGS. 2 to 5:

Zunächst zur Fig. 2, welche welche den Speicherantrieb in der Stellung AUS, Ausschaltfeder 24 gespannt zeigt:First of all to FIG. 2, which shows the storage drive in the OFF position, switch-off spring 24 tensioned:

Der Kurbelhebel 20 befindet sich in der mittleren Stellung AUS.The crank lever 20 is in the middle position OFF.

Auf der Schulter 32 der Hebelklinke 31 ruht die Stützrolle 23. Infolge der Exzentrizität zwischen dem zweiten Bolzen 29 und dem Mittelpunkt 32a des Kreisbogens der Schulter 32, wird die Hebelklinke 31 unter der Kraft der Ausschaltfeder 24 mit der Kurvenrolle 35 an die Kurve 37 des Kulissenhebels 38 angedrückt.The support roller 23 rests on the shoulder 32 of the lever pawl 31. As a result of the eccentricity between the second bolt 29 and the center 32a of the circular arc of the shoulder 32, the lever pawl 31 under the force of the opening spring 24 with the cam roller 35 on the curve 37 of the link lever 38 pressed.

Gegen Auslenken ist der Kulissenhebel 38 durch die Stützklinke 45 und die Auslöseklinke 46 gesperrt.The link lever 38 is locked against deflection by the support pawl 45 and the release pawl 46.

Der Haken 31a der Hebelklinke 31 hat sich gerade unter dem unteren Ende der Sperrklinke 58 hinweggedreht.The hook 31a of the lever pawl 31 has just turned under the lower end of the pawl 58.

Zu Fig. 3, welche den Speicherantrieb in der Stellung EIN, Ausschaltfeder 24 gespannt zeigt:3, which shows the storage drive in the ON position, switch-off spring 24 under tension:

Die dargestellte Stellung wurde durch die bereits beschriebene Betätigung des Sprungantriebs aus der zuvor beschriebenen Stellung AUS, Ausschaltfeder 24 gespannt, erreicht.The position shown was reached by actuating the spring drive from the previously described position OFF, tensioning spring 24.

Der Kurbelhebel 20 hat sich beim Schalten von AUS nach EIN aus seiner mittleren Stellung in die untere Stellung bewegt und die Schaltstange 21 samt Stützrolle 23 mit nach unten gezogen.The crank lever 20 has moved from its middle position into the lower position when switching from OFF to ON and has pulled the shift rod 21 together with the support roller 23 downward.

Da sich die Stützrolle 23 auf der Klinkenschulter 32 abstützt, ist die Hebelklinke 31 mit nach unten gezogen worden.Since the support roller 23 is supported on the pawl shoulder 32, the lever pawl 31 has been pulled downward.

Über den zweiten Bolzen 29, die Lasche 28 und den ersten Bolzen 26, ist auch die Schwinge 25 nach unten geschwenkt.The rocker 25 is also pivoted downward via the second bolt 29, the tab 28 and the first bolt 26.

Die Sperrklinke 58 ist mittels der Federkraft 55 gegen einen Anschlag 25b gezogen.The pawl 58 is pulled against a stop 25b by means of the spring force 55.

Der Kurbelhebel 20 hat die Verbindungslasche 47 ebenfalls mit nach unten genommen und dabei durch entsprechende Anordnung eines Längsschlitzes 47a erst kurz vor dem Erreichen der Stellung EIN die Stützklinke 45 gegen die Federkraft 45a aus ihrer Sperrlage ausgeschwenkt.The crank lever 20 has also taken the connecting plate 47 downward and, by corresponding arrangement of a longitudinal slot 47a, only swiveled the support pawl 45 out of its locked position against the spring force 45a shortly before reaching the ON position.

Zum Schalten von EIN nach AUS mittels Sprungantrieb, wird die Schaltstange 21 samt Stützrolle 23 vom Kurbelhebel 20 nach oben gedrückt.To switch from ON to OFF by means of a spring drive, the shift rod 21 together with the support roller 23 is pressed up by the crank lever 20.

Die Stützrolle 23 liegt am oberen Ende des Längsschlitzes 28a an, so dass die Lasche 28 nach oben bewegt wird.The support roller 23 lies against the upper end of the longitudinal slot 28a, so that the tab 28 is moved upwards.

Die Lasche 28 nimmt ihrerseits die Hebelklinke 31 mit nach oben, wobei die Schwinge 25 über den ersten Bolzen 26 in die Stellung AUS geschwenkt wird.The tab 28 in turn takes the lever pawl 31 upwards, the rocker 25 being pivoted into the OFF position via the first bolt 26.

Die Sperrklinke 58 wird gegen Ende des Schwenkweges der Schwinge 25 an den ortsfesten Anschlag 57 angelegt und hintergreift hier gerade den Haken 31a.The pawl 58 is placed against the fixed stop 57 towards the end of the swivel path of the rocker 25 and here engages behind the hook 31a.

Mit der Bewegung des Kurbelhebels 20 nach oben, wird die Verbindungslasche 47 verschoben und lässt so zu, dass die Stützklinke 45 unter den Kulissenhebel 38 schwenkt und diesen gegen Auslenken sperrt. Damit ist die Stellung nach Fig. 2 erreicht.With the movement of the crank lever 20 upward, the connecting bracket 47 is displaced and allows the support pawl 45 to pivot under the link lever 38 and to lock it against deflection. The position according to FIG. 2 is thus reached.

Zu Fig. 4, in welcher der Speicherantrieb in der Stellung AUS, Ausschaltfeder 24 entspannt, gezeigt ist:Regarding FIG. 4, in which the accumulator drive is released in the OFF position, switch-off spring 24:

Zum Schalten von der zuvor beschriebenen Stellung EIN, Ausschaltfeder 24 gespannt, nach AUS mittels der Ausschaltfeder 24 ist die Auslösestange 48 gegen die Federkraft 46a nach oben gedrückt und die Auslöseklinke 46 aus ihrer Sperrlage geschwenkt worden.To switch from the previously described position ON, switch-off spring 24 tensioned, after OFF by means of the switch-off spring 24, the trigger rod 48 is pressed upward against the spring force 46a and the trigger pawl 46 has been pivoted out of its locked position.

Der Kulissenhebel 38 ist dadurch freigeworden und entgegen der Federkraft 36 nach links ausgeschwenkt.The link lever 38 has thereby become free and swung out to the left against the spring force 36.

Die Hebelklinke 31 hat ihre Abstützung an dem Kulissenhebel 38 verloren und ist um den zweiten Bolzen 29, unter dem auf die Klinkenschulter 32 wirkenden Druck der Ausschaltfeder 24, dem Kulissenhebel 38 gefolgt.The lever pawl 31 has lost its support on the link lever 38 and has followed the link lever 38 around the second bolt 29, under the pressure of the opening spring 24 acting on the pawl shoulder 32.

Die Hebelklinke 31 hat die Stützrolle 23 freigegeben und ist von dem nach oben schnellenden unteren Ende der Ausschaltfeder 24 über den zweiten Bolzen 29, die Lasche 28 und den ersten Bolzen 26 mit nach oben bewegt worden.The lever pawl 31 has released the support roller 23 and has been moved upward by the upward-moving lower end of the switch-off spring 24 via the second bolt 29, the tab 28 and the first bolt 26.

Zugleich hat sich die Schwinge 25 in die Stellung AUS bewegt, in der die Sperrklinke 58 am ortsfesten Anschlag 57 anliegt und das untere Ende der Sperrklinke 58 an den Haken 31a der Hebelklinke 31 angelegt ist.At the same time, the rocker 25 has moved to the OFF position, in which the pawl 58 rests on the fixed stop 57 and the lower end of the pawl 58 is placed on the hook 31a of the lever pawl 31.

Zum erneuten Spannen der Ausschaltfeder 24, ist der Kurbelhebel 20, unter Einwirkung der Biegefeder 3 (Fig. 1), sprunghaft nach oben zu bewegen. Dabei schiebt er die Schaltstange 21 hoch. Die Schwinge 25 bleibt jedoch stehen, da sich die Sperrklinke 58 am ortsfesten Anschlag 57 abstützt.To re-tension the switch-off spring 24, the crank lever 20 has to be moved upwards suddenly under the action of the spiral spring 3 (FIG. 1). He pushes the shift rod 21 up. However, the rocker 25 stops because the pawl 58 is supported on the fixed stop 57.

Es bleiben auch der erste Bolzen 26, die Lasche 28 und der zweite Bolzen 29 stehen.The first bolt 26, the tab 28 and the second bolt 29 also remain.

Da die Ausschaltfeder 24 mit dem einen Ende in der Schaltstange 21 und mit dem anderen Ende im ersten Bolzen 26 der Schwinge 25 eingehängt ist, wird sie bei der Aufwärtsbewegung der Schaltstange 21, unter Entspannen der Biegefeder 3, gespannt.Since the switch-off spring 24 is suspended at one end in the shift rod 21 and at the other end in the first bolt 26 of the rocker arm 25, it is tensioned when the shift rod 21 moves upwards while the spiral spring 3 is released.

Beim Entspannen der Biegefeder 3 schwenken die Klinken 9, 10 zwischen das Stützrollenpaar 12, 12a (Fig. 1).When the spiral spring 3 is relaxed, the pawls 9, 10 pivot between the pair of support rollers 12, 12a (FIG. 1).

Zugleich mit dem Schwenken der Klinken 9, 10 zwischen das Stützrollenpaar 12, 12a legt sich die Hebelklinke 31 unter die Stützrolle 23 und der Kulissenhebel38 wird durch die Federkraft 36 der wegschwenkenden Kurvenrolle 35 nachgeführt.Simultaneously with the pivoting of the pawls 9, 10 between the pair of support rollers 12, 12a, the lever pawl 31 lies under the support roller 23 and the link lever 38 is tracked by the spring force 36 of the cam roller 35 pivoting away.

Die Stützklinke 45 und die Auslöseklinke 46 schwenken unter den Federkräften 45a und 46a in ihre Sperrlage.The support pawl 45 and the release pawl 46 pivot under the spring forces 45a and 46a into their locked position.

Währenddessen hat sich der Haken 31a der Hebelklinke 31 von der Sperrklinke 58 freigedreht, so dass nunmehr die in Fig. gezeigte Stellung erreicht ist.In the meantime, the hook 31a of the lever pawl 31 has rotated freely from the pawl 58, so that the position shown in FIG. Is now reached.

Zu Fig. 5, in welcher der Speicherantrieb in der Stellung ERDE, Ausschaltfeder gespannt, gezeigt ist:5, in which the storage drive is shown in the position EARTH, opening spring tensioned:

Die Schaltachse 1 hat sich unter Entspannen der Biegefeder 3, wie beschrieben, nach ERDE bewegt. Dabei wurde der Kurbelhebel 20 aus seiner mittleren Stellung in die obere Stellung gedreht und damit die Schaltstange 21 samt Stützrolle 23 nach oben gedrückt.The switching axis 1 has moved to EARTH while relaxing the spiral spring 3, as described. The crank lever 20 was rotated from its middle position into the upper position and thus the shift rod 21 together with the support roller 23 was pressed upwards.

Die Stützrolle 23 liegt am oberen Ende des Längsschlitzes 28a an.The support roller 23 lies against the upper end of the longitudinal slot 28a.

Die Lasche 28 ist mit der Schaltstange 21 ebenfalls nach oben bewegt worden.The tab 28 has also been moved up with the shift rod 21.

Die Lasche 28 hat ihrerseits die Hebelklinke 31 mit nach oben genommen und dabei die Schwinge 25 über den ersten Bolzen 26 nach oben in ihre Stellung ERDE geschwenkt.The tab 28 in turn has taken the lever pawl 31 upwards and thereby pivoted the rocker 25 upward into its position EARTH via the first bolt 26.

Mit der Schwenkbewegung der Schwinge 25 hat sich die Sperrklinke 58 unter dem ortsfesten Anschlag 57 weggedreht und hintergreift den Haken 31a der Hebelklinke 31.With the pivoting movement of the rocker 25, the pawl 58 has rotated away under the fixed stop 57 and engages behind the hook 31a of the lever pawl 31.

Die Kurvenrolle 35 liegt nach wie vor an der Kurve 37 des gegen Auslenken gesperrten Kulissenhebels 38 an.The cam roller 35 still bears against the cam 37 of the link lever 38, which is locked against deflection.

BezugszeichenlisteReference symbol list

Figure imgb0001
Figure imgb0001
Figure imgb0002
Figure imgb0002

Claims (1)

  1. Drive for an electrical three position switch with the features:
    1.1 an operating shaft (1) of a snap-action unit, which can be rotated into the switch positions ON, OFF and EARTH, carries a bushing (2) and this bushing (2) carries a coiled torsion spring (3), between the arm ends (3a, 3b) of which engage an actuator (4) and a holder (5),
    1.2 the actuator (4), a tension lever (6) and a gate lever (7) are secured on the bushing (2),
    1.3 the holder (5) and a detent carrier (8) with two detents (9, 10) are secured on the shaft (1),
    1.4 a pair of supporting rollers (12, 12a) for the OFF switch position, a pair of supporting rollers (13, 13a) for the ON switch position and a pair of supporting rollers (14, 14a) for the EARTH switch position are arranged at fixed positions on a circle round the switching shaft (1),
    1.5 the bushing (2) can be rotated round the switching shaft (1) by means of the tension lever (6) from OFF to ON and from OFF to EARTH and vice versa, carrying the torsion spring arm (3a or 3b) with it in the direction of rotation by means of the actuator (4), whilst the detents (9, 10) abut against the pair of supporting rollers associated with the starting position, and the free arm end (3b or 3a) of the torsion spring (3) is retained by the holder (5),
    1.6 after a predetermined angle of rotation of the moving arm end (3a or 3b) of the torsion spring (3), the detent (9 or 10) actuated in the direction of rotation can be deflected by the gate lever (7) and hence the shaft (1) together with the detent carrier (8) can be turned with a snap-action from the free arm of the torsion spring over the holder (5) from OFF to ON, from OFF to EARTH and from EARTH to OFF,
    1.7 a stored energy unit has a tripping spring (24), the force of which can be released by means of a safety device, characterised by the features:
    1.8 a crank lever (20) secured on the switching shaft (1) engages on a switch rod (21) which carries a supporting roller (23) and the tripping spring (24), which is suspended on the upper end of the switch rod (21) and on a rocker (25), which can be pivoted round a first pin (26) which engages into a first slot (27) of the switch rod (21) and into a link (28),
    1.9 the link (28) is penetrated by a second pin (29) which engages into a second slot (30) of the switch rod (21) and is the axis of rotation for a lever detent (31) which can be pivoted with a detent shoulder (32) under the supporting roller (23), which lever detent (31) has a recessed receiving area (34) for the supporting roller (23) and carries a cam roller (35), against which a cam (37) of a gate lever (38) pivotable round a fixed point of rotation (39) abuts under spring resistance (36), with the detent shoulder (32) lying on an arc eccentric to the axis of rotation of the lever detent (30),
    1.10 the free end of the gate lever (38) can be blocked against deflection by a blocking detent (45) and a release detent (46), the blocking detent (45) being movable via a connecting link (47) by the crank lever (20), and the release detent (46) being movable via a release rod (48) out of the blocking position,
    1.11 on the rocker (25) there is mounted a locking detent (58) which is pivoted with spring resistance (55) under a fixed stop (57) and against the spring resistance (55) onto a catch (31a) of the lever detent (31), the end of which detent (58) facing the fixed stop (57) lies on an arc eccentric (58a) to the axis of rotation (56) of the detent,
    1.12 the catch (31a) of the lever detent (31) lies on an arc eccentric to the second pin (29).
EP83110269A 1982-10-27 1983-10-14 Driving device for a three-position electrical switch Expired EP0110082B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83110269T ATE34874T1 (en) 1982-10-27 1983-10-14 DRIVE FOR AN ELECTRIC THREE-POSITION SWITCH.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3239839A DE3239839C1 (en) 1982-10-27 1982-10-27 Drive for an electrical three position switch
DE3239839 1982-10-27

Publications (3)

Publication Number Publication Date
EP0110082A2 EP0110082A2 (en) 1984-06-13
EP0110082A3 EP0110082A3 (en) 1986-04-23
EP0110082B1 true EP0110082B1 (en) 1988-06-01

Family

ID=6176747

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110269A Expired EP0110082B1 (en) 1982-10-27 1983-10-14 Driving device for a three-position electrical switch

Country Status (8)

Country Link
US (1) US4507641A (en)
EP (1) EP0110082B1 (en)
KR (1) KR890004941B1 (en)
AT (1) ATE34874T1 (en)
BR (1) BR8305906A (en)
DE (2) DE3239839C1 (en)
IN (1) IN159037B (en)
ZA (1) ZA837958B (en)

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DE4445081C1 (en) * 1994-12-05 1996-04-11 Siemens Ag Three setting switch drive for medium voltage switchgear

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JPS60246513A (en) * 1984-05-22 1985-12-06 三菱電機株式会社 Operating device
DE3663760D1 (en) * 1985-08-19 1989-07-06 Siemens Ag Operating mechanism for an electric switch with three positions
DE3626526A1 (en) * 1986-08-05 1988-02-11 Concordia Sprecher Schalt SPRING-STORAGE DRIVE FOR ELECTRICAL SWITCHGEAR
US5226528A (en) * 1990-11-06 1993-07-13 Schaffer John S Switch operating mechanism
US5321376A (en) * 1992-09-17 1994-06-14 Electro Switch Corp. Tagging relay
DE4442365A1 (en) * 1994-11-18 1996-05-23 Siemens Ag Drive module for switch disconnectors
DE19816592B4 (en) * 1998-04-08 2006-04-13 Siemens Ag Drive device for switchgear of power supply and distribution
DE102008026798B3 (en) * 2008-06-02 2009-07-30 Siemens Aktiengesellschaft Drive system for electrical switching devices
FI121155B (en) * 2008-06-19 2010-07-30 Abb Oy Control unit for switching device
ES2465000T3 (en) * 2009-11-03 2014-06-04 Abb Technology Ag A spring operated actuator for an electrical switching apparatus
US8669485B2 (en) * 2012-04-13 2014-03-11 Eaton Corporation Reversal prevention of a stored energy mechanism in an electrical switching apparatus
WO2020200951A1 (en) * 2019-03-29 2020-10-08 Siemens Aktiengesellschaft Spring system for a drive system comprising a coupling, spring system comprising a coupling, drive system comprising a coupling and a spring system and switchgear comprising such a drive system

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FR61649E (en) * 1951-04-26 1955-05-16 Electric contactor
DE1087228B (en) * 1958-06-10 1960-08-18 Sachsenwerk Licht & Kraft Ag Drive device for circuit breaker
US3403565A (en) * 1966-03-30 1968-10-01 G & W Electric Speciality Co Spring energized switch operator with roller type stop and release elements
DE2742772C3 (en) * 1977-09-20 1982-12-02 Siemens AG, 1000 Berlin und 8000 München Drive device for electric circuit breakers
US4336516A (en) * 1980-03-31 1982-06-22 Westinghouse Electric Corp. Circuit breaker with stored energy toggle-lock structure
FR2500222A1 (en) * 1981-02-13 1982-08-20 Merlin Gerin MANEUVER MECHANISM FOR ELECTRIC SWITCHING EQUIPMENT WITH THREE SEPARATE POSITIONS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4445081C1 (en) * 1994-12-05 1996-04-11 Siemens Ag Three setting switch drive for medium voltage switchgear

Also Published As

Publication number Publication date
KR840006548A (en) 1984-11-30
US4507641A (en) 1985-03-26
EP0110082A3 (en) 1986-04-23
DE3239839C1 (en) 1984-03-01
IN159037B (en) 1987-03-14
ZA837958B (en) 1984-10-31
DE3376918D1 (en) 1988-07-07
EP0110082A2 (en) 1984-06-13
BR8305906A (en) 1984-05-29
KR890004941B1 (en) 1989-11-30
ATE34874T1 (en) 1988-06-15

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