EP2467863B1 - Switchgear - Google Patents

Switchgear Download PDF

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Publication number
EP2467863B1
EP2467863B1 EP09782030.2A EP09782030A EP2467863B1 EP 2467863 B1 EP2467863 B1 EP 2467863B1 EP 09782030 A EP09782030 A EP 09782030A EP 2467863 B1 EP2467863 B1 EP 2467863B1
Authority
EP
European Patent Office
Prior art keywords
drive shaft
switching device
switch
circuit breaker
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.)
Not-in-force
Application number
EP09782030.2A
Other languages
German (de)
French (fr)
Other versions
EP2467863A1 (en
Inventor
Gerhard Drechsler
Tushar Maruti Rane
Rolf Weber
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2467863A1 publication Critical patent/EP2467863A1/en
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Publication of EP2467863B1 publication Critical patent/EP2467863B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • H01H33/125—Load break switches comprising a separate circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/04—Interlocking mechanisms
    • H01H31/10—Interlocking mechanisms for interlocking two or more switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H33/6661—Combination with other type of switch, e.g. for load break switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches

Definitions

  • the invention relates to a switching device having at least one power or load switch, a grounding switch and a circuit breaker, wherein the earthing switch is coupled to a first straight drive shaft and the circuit breaker is coupled to a second straight drive shaft.
  • Switchgear of the type mentioned are, for example, from the US 2008/308531 A1 , of the EP 0924 827 A1 or the DE 10 2004 015 386 A1 known. As competition for the switchgear market continues to grow, there is a need for cost-effective switching devices.
  • the invention has for its object to provide a switching device, which can be produced inexpensively and has a compact design.
  • the power or load switch is coupled to a third straight drive shaft, wherein the first drive shaft and the second drive shaft parallel to each other and the third drive shaft parallel to the first drive shaft and parallel extends to the second drive shaft.
  • the earthing switch is coupled to a first exclusively straight drive shaft and the circuit breaker is coupled to a second exclusively straight drive shaft.
  • the earthing switch is driven by a first exclusively straight drive shaft, while the disconnector is driven by a second exclusively straight drive shaft.
  • the coupling of the earthing switch or the disconnector, each with a single exclusively straight drive shaft allows a simple construction of the switching device, since no elaborate deflection or gear for connecting a plurality of drive shafts, which are aligned in different directions, are required for the earthing switch or the disconnector.
  • Such a simply constructed switching device can be realized inexpensively.
  • the power and the load switch is coupled to a third exclusively straight drive shaft or in other words: the power or the load switch is driven by a third exclusively straight drive shaft.
  • This also contributes to the simple design of the switching device, as an exclusively straight drive shaft - compared to drive means having a plurality of arranged in different directions drive shafts - simple and therefore cost can be realized.
  • a parallel to the second drive shaft extending first drive shaft advantageously leads to a particularly simple construction of the switching device, in which in particular the required space is low.
  • the parallel alignment of the third drive shaft to the first and / or second drive shaft also leads to a very simple construction of the switching device, since the parallel drive shafts do not interfere or hinder each other.
  • the switching device can be designed so that the first drive shaft and the second drive shaft are independently rotatable.
  • the switching device can be realized in such a way that the power or load switch is arranged between the first drive shaft and the second drive shaft. This also makes a simple construction possible, since the power or load switch (which usually represents a large and heavy component) is arranged centrally between the first drive shaft and the second drive shaft, which allows a favorable center of gravity distribution.
  • the switching device can be designed such that the first drive shaft is coupled via a crank mechanism with the earthing switch and / or the second drive shaft is coupled via a crank mechanism with the circuit breaker.
  • the use of a cranking operation for coupling the first drive shaft to the earthing switch and / or the second drive shaft to the disconnecting switch is particularly advantageous because, on the one hand such a crank mechanism can be easily realized, on the other hand, in such a crank mechanism already with a rotation of the drive shaft is provided by only 180 degrees of the full stroke for the operation of the earthing switch and / or disconnector.
  • a rotation of the respective shaft is already sufficient by 180 degrees in order to turn the earthing switch and / or the disconnecting switch completely on or off.
  • crank mechanism is advantageous because such a transmission has a so-called dead center position in both end positions of the 180-degree rotation of the drive shaft, d. H. there is a self-locking thrust transmission, which can absorb large forces both in the fully turned off state of the respective switch as well as in the fully on state of the respective switch and thus counteracts an unintentional leaving the closed or open switch position.
  • the switching device may further be configured such that it has a locking device which blocks rotation of the second drive shaft in a first locking position, which blocks rotation of the first drive shaft in a second locking position and which in a third locking position rotation of the first drive shaft and a Rotation of the second drive shaft blocked.
  • this locking device can optionally be the first drive shaft and / or the second drive shaft be blocked, thus preventing inadvertent actuation of the earthing switch and / or the circuit breaker.
  • the switching device may be configured such that the locking device is arranged at each end of the first drive shaft, the second drive shaft and the third drive shaft.
  • the locking device can advantageously be easily realized, since the locking device only the unintentional rotation of the drive shafts must be prevented.
  • this locking device can be replaced by a differently constructed locking device, if desired. This results in a modular construction of the switching device, can be easily and inexpensively a variety of variants of the switching device can be realized.
  • the switching device may also include a display device (switch position indicator) which indicates the position of the first drive shaft and / or the second drive shaft.
  • switch position indicator indicates the position of the first drive shaft and / or the second drive shaft.
  • the switching device can be realized so that the display device is arranged at each end of the first drive shaft and the second drive shaft. Due to the arrangement of the display device at each end of the first drive shaft and the second drive shaft results - similar to the locking device - a building block-like structure of the switching device, because the display device easily and without significant structural changes the rest of the switching device can be replaced by another display device.
  • the switching device can also be designed so that the earthing switch is arranged on one side of the power or load switch and the disconnecting switch is arranged on the opposite side of the power or load switch.
  • Such an arrangement is particularly advantageous because the length of the current-carrying paths within the switching device is minimized by the symmetrical arrangement of the earthing switch on one side of the power or load switch and the disconnector on the opposite side of the power or load switch.
  • FIG. 1 schematically an overview diagram of an embodiment of a switching device 100 is shown, wherein the circuit diagram represents only one phase of the three-phase switching device.
  • a bus 101 illustrated which electrical current leads to the switching device.
  • the electrical current is passed through a symbolically shown as a rectangle implementation 103 of a busbar portion of the switching device to a switching range of the switching device and passes to a circuit breaker 105.
  • the circuit breaker 105 connects the busbar 101 with a contact of a circuit breaker 107, wherein the circuit breaker in the embodiment as a vacuum interrupter is realized.
  • the other contact of the circuit breaker 107 is connected via a further passage 109 with a cable 111, which is located in the cable portion of the switching device.
  • the contact of the circuit breaker 107 connected to the circuit breaker 105 is further connected to a grounding switch 113.
  • the earthing switch 113 serves to ground the contact of the circuit breaker connected to this disconnecting switch 105 when the disconnecting switch 105 is open
  • the bus bar 101 is located in the busbar area of the switching device, which is designed as a busbar module.
  • This busbar module is connected via the feedthrough 103 to the switching region of the switching device.
  • This switching portion is configured as a power switch module in which the power switch 107, the disconnect switch 105, and the ground switch 113 are located.
  • This power switch module is connected via the feedthrough 109 to a cable module housing the cable connections and cables 111.
  • the busbars, switches or cables for all three phases of the electrical current are located in the exemplary embodiment.
  • FIG. 2 is a part of the switching device 100 in a partially disassembled state shown in a three-dimensional view.
  • FIG. 1 To recognize current path shown, which of a in the upper part of the FIG. 2 illustrated terminal 201 for the busbar 101 via the feedthrough 103, the circuit breaker 105, the power switch 107, the implementation 109 to a in the lower part of FIG. 2 shown cable connection 203 out.
  • the shows FIG. 2 essentially the switch room, wherein the housing is not shown and some parts have been omitted for the sake of clarity.
  • the switching device comprises three phases L1, L2 and L3, which are constructed substantially the same. The easiest way to recognize the structure at phase L1, since in this phase L1 support parts are not shown.
  • the switching device 100 has a first, exclusively straight drive shaft 205, which is coupled to the grounding switch 113.
  • the switching device has a second, exclusively straight drive shaft 207, which is coupled to the disconnect switch 105.
  • the switching device has a third exclusively straight drive shaft 209, which is coupled to the power switch 107.
  • the first drive shaft 205 is used exclusively for driving the earthing switch 113, the second drive shaft 207 exclusively for driving the disconnecting switch 105, and the third drive shaft 209 exclusively for driving the power switch 107.
  • the first drive shaft 205, the second drive shaft 207 and the third drive shaft 209 are each independently rotatable and parallel to each other.
  • the power switch 107 is disposed between the first drive shaft 205 and the second drive shaft 207.
  • the first drive shaft 205 is connected via a crank gear to the earthing switch 113 coupled. This crank mechanism is better seen in Figures 3 and 5.
  • the second drive shaft is coupled via a crank mechanism 211 to the disconnect switch 105.
  • the earthing switch 113 is disposed on one side of the power switch 107 and the disconnecting switch 105 on the other side of the power switch 107.
  • the circuit breaker 105 has a fixed sleeve-shaped disconnect contact 213, a disconnect pin 215 and a disconnect pin guide 217.
  • the separating bolt 215 is axially longitudinally movable. He touches in the illustrated state, the fixed disconnector contact 213, thus the circuit breaker 105 is closed in the illustrated state.
  • the circuit breaker 105 is driven via a rigid insulator 219 of a coupling rod 211 of the crank mechanism, wherein the insulator 219 and the coupling rod 211 are integrally formed.
  • the crank gear is connected to the second, exclusively straight drive shaft 207 which drives or operates the disconnect switch 105.
  • One end of the second drive shaft 207 is connected to a locking device 230, with the u. a. the second drive shaft 207 locks, d. H. can be blocked.
  • the locking device 230 has three locking positions: In a first locking position, rotation of the first drive shaft 205 is enabled, whereas rotation of the second drive shaft 207 is blocked. In the second locking position, rotation of the second drive shaft 207 is enabled with rotation of the first drive shaft 205 blocked. In the third Locking position, a rotation of the first drive shaft 205 and the second drive shaft 207 are blocked.
  • the locking device 230 is arranged in each case at one end of the first, second and third drive shaft.
  • the locking device 230 comprises an actuating slide 234 which is located in the in FIG. 2 shown position in a middle sliding position, which is the third locking position associated.
  • the locking device 230 may also be designed so that it blocks a rotation of the second drive shaft 207 and a rotation of the third drive shaft 209 in a first locking position and allows rotation of the first drive shaft 205, in a second locking position rotation of the first drive shaft 205 and blocks rotation of the third drive shaft 209 and allows rotation of the second drive shaft 207 and, in a third lock position, blocks rotation of the first drive shaft 205 and rotation of the second drive shaft 207 and allows rotation of the third drive shaft 209.
  • a display device 238 (switching position display) is realized, which indicates the respective current position of the first, second and third drive shaft and thus the current position of the earthing switch, the circuit breaker and the circuit breaker.
  • This display device has display areas 238, which are openings in a cover plate, behind which, depending on the rotational position of the first drive shaft 205 and the second drive shaft 207 different colored display elements are visible.
  • the electrical current is passed to the power switch 107 via the feedthrough 103, the disconnect switch 105 and via flexible current bands 250.
  • the circuit breaker 107 is a vacuum interrupter 107 known as such.
  • This vacuum interrupter 107 has a fixed contact which is electrically connected to the cable terminal 203 via the leadthrough 109.
  • the moving contact of the vacuum interrupter 107 is electrically connected to the current band 250 and is moved mechanically via a designed as an isolator pull / push rod 252 in the axial direction of the vacuum interrupter.
  • a device for stroke adjustment 254 is arranged between moving contact of the vacuum interrupter 107 and the push / pull rod 252, a device for stroke adjustment 254 is arranged.
  • the pull / push rod 252 is actuated by means of a rocker arm 256 attached to the third drive shaft 209.
  • the third drive shaft 209 is driven by means of a drive 258, which is a magnetic drive in the exemplary embodiment.
  • the drive 258 could also be configured differently, for example as a spring-loaded drive.
  • the drive 258 moves by means of another rocker arm 260, the third drive shaft 209 by only a few degrees of rotational movement. This rotational movement is sufficient to close or open the circuit breaker 107.
  • the moving contact of the power switch 107 is further electrically connected via the current band 250 to an earthing contact 262 of the earthing switch 113.
  • the grounding switch 113 further has a grounding ruler 264, which is guided vertically displaceably in a guide 266.
  • the grounding ruler 264 is electrically connected to ground potential. In the illustrated state, the grounding ruler 264 does not touch the earth contact 262, thus, in the illustrated state, the earthing switch 113 is opened.
  • Erderlineal 264 is a shorting bridge that connects the earth contacts 262 of all three phases L1, L2 and L3 together and to ground potential in the on state of the earthing switch.
  • FIG. 3 is a side view of the switching device 100 viewed in the direction of the grounding switch 113.
  • the Erderlineal 264 is mounted in the guides 266 slidingly movable and is driven by a coupling rod 300 of a crank gear from the first drive shaft 205.
  • the Erderlineal 264 is thereby pushed by two simultaneously moving coupling rods 300 of two crank gear up or down.
  • the Erder ruler 264 comes into electrical contact with the 3 ErderWalleten 262 of the three phases L1, L2 and L3.
  • Earth electrode 264 then connects the earth contacts 262 of all three phases L1, L2 and L3 to each other and to ground potential ,
  • the first drive shaft 205 is driven in the embodiment by means of a crank which can be pluggable connected to the right end of the first drive shaft 205 (in the FIG. 3 not shown). In other embodiments, however, the first drive shaft 205 can also be driven by means of other drives, for example by means of a motor drive. The same applies to the second drive shaft 207, which in the FIG. 3 is covered by the first drive shaft 205.
  • FIG. 4 is the side of the switching device 100 shown in a further side view, on which the circuit breaker 105 is arranged. It is easy to see how the separating bolt 215 is driven by the coupling rod 211 from the second drive shaft 207.
  • FIG. 5 shows a sectional view through the switching device 100 along the sectional plane VV of FIG. 3 ,
  • the first crank mechanism can be seen well, which connects the second drive shaft 207 to the linear slide-guided separating bolt 215 by means of the coupling rod 211.
  • the second crank mechanism can be seen, which connects by means of the coupling rod 300, the first drive shaft 205 with the linear sliding-guided Erderlineal 264.
  • the earth contact 262 can be seen, into which the grounding ruler 264 retracts when closing the earthing switch 113.
  • the earthing switch is coupled to a first straight drive shaft and the disconnector is coupled to a second straight drive shaft.
  • the power switch may be disposed between the first drive shaft and the second drive shaft, the two drive shafts may be aligned parallel to each other.
  • the circuit breaker may be coupled to a third straight drive shaft which may be parallel to the first drive shaft and the second drive shaft.
  • a locking device can moreover be attached to the ends of these two shafts in a particularly simple manner, whereby the first drive shaft, the second drive shaft or also the third drive shaft can be blocked with this locking device.
  • Such a switching device can therefore be very simple and therefore inexpensive to manufacture and maintain.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Description

Die Erfindung betrifft ein Schaltgerät, welches mindestens einen Leistungs- oder Lastschalter, einen Erdungsschalter und einen Trennschalter aufweist, bei dem der Erdungsschalter mit einer ersten geraden Antriebswelle gekoppelt ist und der Trennschalter mit einer zweiten geraden Antriebswelle gekoppelt ist.The invention relates to a switching device having at least one power or load switch, a grounding switch and a circuit breaker, wherein the earthing switch is coupled to a first straight drive shaft and the circuit breaker is coupled to a second straight drive shaft.

Derartige Schaltgeräte sind allgemein bekannt und werden auch als Schaltanlagen bezeichnet. Dabei können mit dem Leistungs- oder Lastschalter große Ströme ein- und ausgeschaltet werden. Der Trennschalter dient zum Öffnen und Schließen von Stromkreisen im nahezu stromlosen Zustand und der Erdungsschalter dient zum Erden von zuvor getrennten (freigeschalteten) Stromkreisen. Solche Schaltgeräte können als luftisolierte Schaltgeräte oder als gasisolierte Schaltgeräte realisiert sein.Such switching devices are well known and are also referred to as switchgear. In doing so, large currents can be switched on and off with the power or load switch. The circuit breaker is used to open and close circuits in near-de-energized state and the earthing switch is used to ground previously separate (enabled) circuits. Such switching devices can be realized as air-insulated switchgear or as gas-insulated switchgear.

Schaltanlagen der eingangs genannten Art sind beispielsweise aus der US 2008/308531 A1 , der EP 0924 827 A1 oder der DE 10 2004 015 386 A1 bekannt. Da der Wettbewerb auf den Markt für Schaltgeräte immer stärker wird, besteht Bedarf nach kostengünstigen Schaltgeräten.Switchgear of the type mentioned are, for example, from the US 2008/308531 A1 , of the EP 0924 827 A1 or the DE 10 2004 015 386 A1 known. As competition for the switchgear market continues to grow, there is a need for cost-effective switching devices.

Der Erfindung liegt die Aufgabe zugrunde, ein Schaltgerät anzugeben, welches kostengünstig produziert werden kann und einen kompakten Aufbau aufweist.The invention has for its object to provide a switching device, which can be produced inexpensively and has a compact design.

Diese Aufgabe wird erfindungsgemäß gelöst durch ein Schaltgerät nach dem unabhängigen Anspruch 1. Vorteilhafte Weiterbildungen dieses Schaltgerätes sind Gegenstand der abhängigen Ansprüche.This object is achieved by a switching device according to the independent claim 1. Advantageous developments This switching device are the subject of the dependent claims.

Die Aufgabe wird erfindungsgemäß bei einem Schaltgerät der eingangs genannten Art dadurch gelöst, dass der Leistungs- oder Lastschalter mit einer dritten geraden Antriebswelle gekoppelt ist, wobei die erste Antriebswelle und die zweite Antriebswelle parallel zueinander verlaufen und die dritte Antriebswelle parallel zu der ersten Antriebswelle und parallel zu der zweiten Antriebswelle verläuft. Bei diesem Schaltgerät ist der Erdungsschalter mit einer ersten ausschließlich geraden Antriebswelle gekoppelt und der Trennschalter ist mit einer zweiten ausschließlich geraden Antriebswelle gekoppelt. Mit anderen Worten wird der Erdungsschalter von einer ersten ausschließlich geraden Antriebswelle angetrieben, während der Trennschalter von einer zweiten ausschließlich geraden Antriebswelle angetrieben wird. Die Kopplung des Erdungsschalters bzw. des Trennschalters mit jeweils einer einzigen ausschließlich geraden Antriebswelle ermöglicht einen einfachen Aufbau des Schaltgerätes, da für den Erdungsschalter bzw. den Trennschalter keine aufwändigen Umlenkeinrichtungen oder Getriebe zum Verbinden mehrerer Antriebswellen, die in unterschiedlichen Richtungen ausgerichtet sind, benötigt werden. Ein solches einfach aufgebautes Schaltgerät lässt sich kostengünstig realisieren. Hierbei ist der Leistungs- und der Lastschalter mit einer dritten ausschließlich geraden Antriebswelle gekoppelt oder mit anderen Worten: Der Leistungs- oder der Lastschalter wird von einer dritten ausschließlich geraden Antriebswelle angetrieben. Auch dies trägt zu dem einfachen Aufbau des Schaltgerätes bei, da eine ausschließlich gerade Antriebswelle - im Vergleich zu Antriebsmitteln, die mehrere, in verschiedenen Richtungen angeordnete Antriebswellen aufweisen - einfach und damit auch kostengünstig realisiert werden kann. Eine parallel zu der zweiten Antriebswelle verlaufende erste Antriebswelle führt vorteilhafterweise zu einem besonders einfachen Aufbau des Schaltgeräts, bei dem insbesondere auch der benötigte Platz gering ist. Die parallele Ausrichtung der dritten Antriebswelle zu der ersten und/oder zweiten Antriebswelle führt ebenfalls zu einem sehr einfachen Aufbau des Schaltgerätes, da sich die parallel verlaufenden Antriebswellen gegenseitig nicht stören oder behindern.The object is achieved in a switching device of the type mentioned above in that the power or load switch is coupled to a third straight drive shaft, wherein the first drive shaft and the second drive shaft parallel to each other and the third drive shaft parallel to the first drive shaft and parallel extends to the second drive shaft. In this switching device, the earthing switch is coupled to a first exclusively straight drive shaft and the circuit breaker is coupled to a second exclusively straight drive shaft. In other words, the earthing switch is driven by a first exclusively straight drive shaft, while the disconnector is driven by a second exclusively straight drive shaft. The coupling of the earthing switch or the disconnector, each with a single exclusively straight drive shaft allows a simple construction of the switching device, since no elaborate deflection or gear for connecting a plurality of drive shafts, which are aligned in different directions, are required for the earthing switch or the disconnector. Such a simply constructed switching device can be realized inexpensively. Here, the power and the load switch is coupled to a third exclusively straight drive shaft or in other words: the power or the load switch is driven by a third exclusively straight drive shaft. This also contributes to the simple design of the switching device, as an exclusively straight drive shaft - compared to drive means having a plurality of arranged in different directions drive shafts - simple and therefore cost can be realized. A parallel to the second drive shaft extending first drive shaft advantageously leads to a particularly simple construction of the switching device, in which in particular the required space is low. The parallel alignment of the third drive shaft to the first and / or second drive shaft also leads to a very simple construction of the switching device, since the parallel drive shafts do not interfere or hinder each other.

Dabei kann das Schaltgerät so ausgestaltet sein, dass die erste Antriebswelle und die zweite Antriebswelle unabhängig voneinander drehbar sind.In this case, the switching device can be designed so that the first drive shaft and the second drive shaft are independently rotatable.

Das Schaltgerät kann so realisiert sein, dass der Leistungs- oder Lastschalter zwischen der ersten Antriebswelle und der zweiten Antriebswelle angeordnet ist. Auch dadurch wird ein einfacher Aufbau ermöglicht, da der Leistungs- oder Lastschalter (der in der Regel ein großes und schweres Bauteil darstellt) mittig zwischen der ersten Antriebswelle und der zweiten Antriebswelle angeordnet ist, was eine günstige Schwerpunktverteilung ermöglicht.The switching device can be realized in such a way that the power or load switch is arranged between the first drive shaft and the second drive shaft. This also makes a simple construction possible, since the power or load switch (which usually represents a large and heavy component) is arranged centrally between the first drive shaft and the second drive shaft, which allows a favorable center of gravity distribution.

Das Schaltgerät kann so ausgestaltet sein, dass die erste Antriebswelle über ein Kurbelgetriebe mit dem Erdungsschalter gekoppelt ist und/oder die zweite Antriebswelle über ein Kurbelgetriebe mit dem Trennschalter gekoppelt ist. Der Einsatz eines Kurbelbetriebes zur Kopplung der ersten Antriebswelle mit dem Erdungsschalter und/oder der zweiten Antriebswelle mit dem Trennschalter ist besonders vorteilhaft, weil zum Einen ein derartiges Kurbelgetriebe einfach realisiert werden kann, zum Anderen bei einem solchen Kurbelgetriebe schon bei einer Drehung der Antriebswelle um nur 180 Grad der vollständige Hub für die Betätigung des Erdungsschalters und/oder Trennschalters bereitgestellt wird. So reicht bereits eine Drehung der jeweiligen Welle um 180 Grad aus, um den Erdungsschalter und/oder den Trennschalter vollständig ein- oder auszuschalten. Dies ist insbesondere gegenüber den oftmals eingesetzten Spindelgetrieben ein erheblicher Vorteil, da bei diesen Spindelgetrieben eine vielfache Drehung einer Antriebswelle um 360 Grad notwendig ist, um den notwendigen Hub zum vollständigen Ein- oder Ausschalten des jeweiligen Schalters zu erreichen.The switching device can be designed such that the first drive shaft is coupled via a crank mechanism with the earthing switch and / or the second drive shaft is coupled via a crank mechanism with the circuit breaker. The use of a cranking operation for coupling the first drive shaft to the earthing switch and / or the second drive shaft to the disconnecting switch is particularly advantageous because, on the one hand such a crank mechanism can be easily realized, on the other hand, in such a crank mechanism already with a rotation of the drive shaft is provided by only 180 degrees of the full stroke for the operation of the earthing switch and / or disconnector. Thus, a rotation of the respective shaft is already sufficient by 180 degrees in order to turn the earthing switch and / or the disconnecting switch completely on or off. This is a considerable advantage, in particular compared to the spindle drives often used, since in these spindle drives a multiple rotation of a drive shaft by 360 degrees is necessary to achieve the necessary stroke for the complete switching on or off of the respective switch.

Weiterhin ist ein Kurbelgetriebe deshalb vorteilhaft, weil ein solches Getriebe in beiden Endlagen der 180-Grad-Drehung der Antriebswelle eine sogenannte Totpunktlage aufweist, d. h. es liegt ein sich selbst verriegelndes Schub-Getriebe vor, welches sowohl im vollständig ausgeschalteten Zustand des jeweiligen Schalters als auch im vollständig eingeschalteten Zustand des jeweiligen Schalters große Kräfte aufnehmen kann und so einem unbeabsichtigten Verlassen der geschlossenen oder offenen Schalterstellung entgegenwirkt.Furthermore, a crank mechanism is advantageous because such a transmission has a so-called dead center position in both end positions of the 180-degree rotation of the drive shaft, d. H. there is a self-locking thrust transmission, which can absorb large forces both in the fully turned off state of the respective switch as well as in the fully on state of the respective switch and thus counteracts an unintentional leaving the closed or open switch position.

Das Schaltgerät kann weiterhin so ausgestaltet sein, dass dieses eine Verriegelungseinrichtung aufweist, die in einer ersten Verriegelungsstellung eine Drehung der zweiten Antriebswelle blockiert, die in einer zweiten Verriegelungsstellung eine Drehung der ersten Antriebswelle blockiert und die in einer dritten Verriegelungsstellung eine Drehung der ersten Antriebswelle und eine Drehung der zweiten Antriebswelle blockiert. Durch diese Verriegelungseinrichtung kann wahlweise die erste Antriebswelle und/oder die zweite Antriebswelle blockiert werden und somit ein unbeabsichtigtes Betätigen des Erdungsschalters und/oder des Trennschalters unterbunden werden.The switching device may further be configured such that it has a locking device which blocks rotation of the second drive shaft in a first locking position, which blocks rotation of the first drive shaft in a second locking position and which in a third locking position rotation of the first drive shaft and a Rotation of the second drive shaft blocked. By this locking device can optionally be the first drive shaft and / or the second drive shaft be blocked, thus preventing inadvertent actuation of the earthing switch and / or the circuit breaker.

Das Schaltgerät kann so ausgestaltet sein, dass die Verriegelungseinrichtung an jeweils einem Ende der ersten Antriebswelle, zweiten Antriebswelle und dritten Antriebswelle angeordnet ist. Durch das Anordnen der Verriegelungseinrichtung an jeweils einem Ende der ersten, zweiten und dritten Antriebswelle kann die Verriegelungseinrichtung vorteilhafterweise einfach realisiert werden, da die Verriegelungseinrichtung ausschließlich das unbeabsichtigte Drehen der Antriebswellen verhindert muß. Außerdem kann ohne große konstruktive Änderungen des gesamten Schaltgerätes diese Verriegelungseinrichtung durch eine anders aufgebaute Verriegelungseinrichtung ersetzt werden, wenn dies gewünscht wird. Dadurch ergibt sich ein bausteinartiger Aufbau des Schaltgerätes, durch den einfach und kostengünstig eine Vielzahl von Varianten des Schaltgerätes realisiert werden können.The switching device may be configured such that the locking device is arranged at each end of the first drive shaft, the second drive shaft and the third drive shaft. By arranging the locking device at each end of the first, second and third drive shaft, the locking device can advantageously be easily realized, since the locking device only the unintentional rotation of the drive shafts must be prevented. In addition, without major structural changes of the entire switching device, this locking device can be replaced by a differently constructed locking device, if desired. This results in a modular construction of the switching device, can be easily and inexpensively a variety of variants of the switching device can be realized.

Das Schaltgerät kann auch eine Anzeigevorrichtung (Schaltstellungsanzeige) aufweisen, die die Stellung der ersten Antriebswelle und/oder der zweiten Antriebswelle anzeigt.The switching device may also include a display device (switch position indicator) which indicates the position of the first drive shaft and / or the second drive shaft.

Dabei kann das Schaltgerät so realisiert sein, dass die Anzeigevorrichtung an jeweils einem Ende der ersten Antriebswelle und der zweiten Antriebswelle angeordnet ist. Durch die Anordnung der Anzeigevorrichtung an jeweils einem Ende der ersten Antriebswelle und der zweiten Antriebswelle ergibt sich - ähnlich wie bei der Verriegelungseinrichtung - ein bausteinartiger Aufbau des Schaltgerätes, weil die Anzeigevorrichtung einfach und ohne wesentliche konstruktive Änderungen des restlichen Schaltgerätes durch eine andere Anzeigevorrichtung ersetzt werden kann.In this case, the switching device can be realized so that the display device is arranged at each end of the first drive shaft and the second drive shaft. Due to the arrangement of the display device at each end of the first drive shaft and the second drive shaft results - similar to the locking device - a building block-like structure of the switching device, because the display device easily and without significant structural changes the rest of the switching device can be replaced by another display device.

Das Schaltgerät kann auch so ausgestaltet sein, dass der Erdungsschalter auf einer Seite des Leistungs- oder Lastschalters angeordnet ist und der Trennschalter auf der gegenüberliegenden Seite des Leistungs- oder Lastschalters angeordnet ist. Eine derartige Anordnung ist insbesondere deshalb vorteilhaft, weil durch die symmetrische Anordnung des Erdungsschalters auf der einen Seite des Leistungs- oder Lastschalters und des Trennschalters auf der gegenüberliegenden Seite des Leistungs- oder Lastschalters die Länge der stromführenden Pfade innerhalb des Schaltgerätes minimiert wird.The switching device can also be designed so that the earthing switch is arranged on one side of the power or load switch and the disconnecting switch is arranged on the opposite side of the power or load switch. Such an arrangement is particularly advantageous because the length of the current-carrying paths within the switching device is minimized by the symmetrical arrangement of the earthing switch on one side of the power or load switch and the disconnector on the opposite side of the power or load switch.

Im Folgenden wird die Erfindung anhand eines Ausführungsbeispiels näher erläutert. Dazu ist in

Figur 1
ein schematischer Schaltplan eines Schaltgerätes, in
Figur 2
eine dreidimensionale Ansicht des Schaltgerätes im teilweise demontierten Zustand, in
Figur 3
eine Seitenansicht des Schaltgerätes, in
Figur 4
eine zweite Seitenansicht des Schaltgerätes und in
Figur 5
eine Schnittansicht des Schaltgerätes dargestellt.
In the following the invention will be explained in more detail with reference to an embodiment. This is in
FIG. 1
a schematic circuit diagram of a switching device, in
FIG. 2
a three-dimensional view of the switching device in the partially disassembled state, in
FIG. 3
a side view of the switching device, in
FIG. 4
a second side view of the switching device and in
FIG. 5
a sectional view of the switching device shown.

In Figur 1 ist schematisch ein Übersichtschaltplan eines Ausführungsbeispiels eines Schaltgerätes 100 dargestellt, wobei der Schaltplan nur eine Phase des dreiphasigen Schaltgerätes darstellt. Dabei ist im oberen Teil eine Sammelschiene 101 dargestellt, welche elektrischen Strom zu dem Schaltgerät führt. Der elektrische Strom wird über eine symbolisch als Rechteck dargestellte Durchführung 103 von einem Sammelschienenbereich des Schaltgerätes zu einem Schaltbereich des Schaltgerätes geleitet und gelangt zu einem Trennschalter 105. Der Trennschalter 105 verbindet die Sammelschiene 101 mit einem Kontakt eines Leistungsschalters 107, wobei der Leistungsschalter im Ausführungsbeispiel als eine Vakuumschaltröhre realisiert ist. Der andere Kontakt des Leistungsschalters 107 ist über eine weitere Durchführung 109 mit einem Kabel 111 verbunden, welches sich in dem Kabelbereich des Schaltgerätes befindet. Der mit dem Trennschalter 105 verbundene Kontakt des Leistungsschalters 107 ist weiterhin mit einem Erdungsschalter 113 verbunden. Der Erdungsschalter 113 dient dazu, bei geöffnetem Trennschalter 105 den mit diesem Trennschalter 105 verbundenen Kontakt des Leistungsschalters zu erden.In FIG. 1 schematically an overview diagram of an embodiment of a switching device 100 is shown, wherein the circuit diagram represents only one phase of the three-phase switching device. Here, in the upper part of a bus 101 illustrated which electrical current leads to the switching device. The electrical current is passed through a symbolically shown as a rectangle implementation 103 of a busbar portion of the switching device to a switching range of the switching device and passes to a circuit breaker 105. The circuit breaker 105 connects the busbar 101 with a contact of a circuit breaker 107, wherein the circuit breaker in the embodiment as a vacuum interrupter is realized. The other contact of the circuit breaker 107 is connected via a further passage 109 with a cable 111, which is located in the cable portion of the switching device. The contact of the circuit breaker 107 connected to the circuit breaker 105 is further connected to a grounding switch 113. The earthing switch 113 serves to ground the contact of the circuit breaker connected to this disconnecting switch 105 when the disconnecting switch 105 is open.

Die Sammelschiene 101 befindet sich in dem Sammelschienenbereich des Schaltgerätes, der als ein Sammelschienenmodul ausgestaltet ist. Dieses Sammelschienenmodul ist über die Durchführung 103 mit dem Schaltbereich des Schaltgerätes verbunden. Dieser Schaltbereich ist als ein Leistungsschaltermodul ausgestaltet, in welchem sich der Leistungsschalter 107, der Trennschalter 105 und der Erdungsschalter 113 befinden. Dieses Leistungsschaltermodul ist über die Durchführung 109 mit einem Kabelmodul verbunden, welches die Kabelanschlüsse und Kabel 111 beherbergt. In den einzelnen Modulen befinden sich im Ausführungsbeispiel jeweils die Sammelschienen, Schalter bzw. Kabel für alle drei Phasen des elektrischen Stroms.The bus bar 101 is located in the busbar area of the switching device, which is designed as a busbar module. This busbar module is connected via the feedthrough 103 to the switching region of the switching device. This switching portion is configured as a power switch module in which the power switch 107, the disconnect switch 105, and the ground switch 113 are located. This power switch module is connected via the feedthrough 109 to a cable module housing the cable connections and cables 111. In the individual modules, the busbars, switches or cables for all three phases of the electrical current are located in the exemplary embodiment.

In Figur 2 ist in einer dreidimensionalen Ansicht ein Teil des Schaltgerätes 100 in teilweise demontiertem Zustand dargestellt. Dabei ist der in Figur 1 dargestellte Strompfad zu erkennen, welcher von einem im oberen Teil der Figur 2 dargestellten Anschluss 201 für die Sammelschiene 101 über die Durchführung 103, den Trennschalter 105, den Leistungsschalter 107, die Durchführung 109 zu einem im unteren Teil der Figur 2 dargestellten Kabelanschluss 203 geführt. Somit zeigt die Figur 2 im Wesentlichen den Schaltraum, wobei das Gehäuse nicht dargestellt ist und einige Teile der besseren Übersichtlichkeit halber weggelassen wurden. Das Schaltgerät umfasst drei Phasen L1, L2 und L3, welche im Wesentlichen gleichartig aufgebaut sind. Am einfachsten ist der Aufbau bei Phase L1 zu erkennen, da bei dieser Phase L1 Halterungsteile nicht dargestellt sind.In FIG. 2 is a part of the switching device 100 in a partially disassembled state shown in a three-dimensional view. Here is the in FIG. 1 To recognize current path shown, which of a in the upper part of the FIG. 2 illustrated terminal 201 for the busbar 101 via the feedthrough 103, the circuit breaker 105, the power switch 107, the implementation 109 to a in the lower part of FIG. 2 shown cable connection 203 out. Thus, the shows FIG. 2 essentially the switch room, wherein the housing is not shown and some parts have been omitted for the sake of clarity. The switching device comprises three phases L1, L2 and L3, which are constructed substantially the same. The easiest way to recognize the structure at phase L1, since in this phase L1 support parts are not shown.

Das Schaltgerät 100 weist eine erste, ausschließlich gerade Antriebswelle 205 auf, die mit dem Erdungsschalter 113 gekoppelt ist. Darüber hinaus weist das Schaltgerät eine zweite, ausschließlich gerade Antriebswelle 207 auf, die mit dem Trennschalter 105 gekoppelt ist. Schließlich weist das Schaltgerät eine dritte ausschließlich gerade Antriebswelle 209 auf, die mit dem Leistungsschalter 107 gekoppelt ist. Dabei dient die erste Antriebswelle 205 ausschließlich dem Antrieb des Erdungsschalters 113, die zweite Antriebswelle 207 ausschließlich dem Antrieb des Trennschalters 105 und die dritte Antriebswelle 209 ausschließlich dem Antrieb des Leistungsschalters 107.The switching device 100 has a first, exclusively straight drive shaft 205, which is coupled to the grounding switch 113. In addition, the switching device has a second, exclusively straight drive shaft 207, which is coupled to the disconnect switch 105. Finally, the switching device has a third exclusively straight drive shaft 209, which is coupled to the power switch 107. The first drive shaft 205 is used exclusively for driving the earthing switch 113, the second drive shaft 207 exclusively for driving the disconnecting switch 105, and the third drive shaft 209 exclusively for driving the power switch 107.

Die erste Antriebswelle 205, die zweite Antriebswelle 207 und die dritte Antriebswelle 209 sind jeweils unabhängig voneinander drehbar und verlaufen parallel zueinander. Der Leistungsschalter 107 ist zwischen der ersten Antriebswelle 205 und der zweiten Antriebswelle 207 angeordnet. Die erste Antriebswelle 205 ist über ein Kurbelgetriebe mit dem Erdungsschalter 113 gekoppelt. Dieses Kurbelgetriebe ist in den Figuren 3 und 5 besser zu erkennen. Die zweite Antriebswelle ist über ein Kurbelgetriebe 211 mit dem Trennschalter 105 gekoppelt. Der Erdungsschalter 113 ist auf einer Seite des Leistungsschalters 107 und der Trennschalter 105 auf der anderen Seite des Leistungsschalters 107 angeordnet.The first drive shaft 205, the second drive shaft 207 and the third drive shaft 209 are each independently rotatable and parallel to each other. The power switch 107 is disposed between the first drive shaft 205 and the second drive shaft 207. The first drive shaft 205 is connected via a crank gear to the earthing switch 113 coupled. This crank mechanism is better seen in Figures 3 and 5. The second drive shaft is coupled via a crank mechanism 211 to the disconnect switch 105. The earthing switch 113 is disposed on one side of the power switch 107 and the disconnecting switch 105 on the other side of the power switch 107.

Wie oben bereits erläutert, fließt der Strom über die Durchführung 103 in den Schaltraum hinein. Die Durchführung 103 ist mit dem Trennschalter 105 verbunden. Der Trennschalter 105 weist dabei einen feststehenden hülsenförmigen Trennerkontakt 213, einen Trennerbolzen 215 und eine Trennerbolzenführung 217 auf. Der Trennerbolzen 215 ist dabei axial längsbeweglich. Er berührt im dargestellten Zustand den feststehenden Trennerkontakt 213, somit ist der Trennschalter 105 im dargestellten Zustand geschlossen. Der Trennschalter 105 wird über einen starren Isolator 219 von einer Koppelstange 211 des Kurbelgetriebes angetrieben, wobei der Isolator 219 und die Koppelstange 211 einstückig ausgebildet sind. Das Kurbelgetriebe ist mit der zweiten, ausschließlich geraden Antriebswelle 207 verbunden, welche den Trennschalter 105 antreibt bzw. betätigt. Ein Ende der zweiten Antriebswelle 207 ist mit einer Verriegelungsvorrichtung 230 verbunden, mit der u. a. die zweite Antriebswelle 207 verriegelt, d. h. blockiert werden kann.As already explained above, the current flows through the feedthrough 103 into the switch room. The passage 103 is connected to the circuit breaker 105. The disconnect switch 105 has a fixed sleeve-shaped disconnect contact 213, a disconnect pin 215 and a disconnect pin guide 217. The separating bolt 215 is axially longitudinally movable. He touches in the illustrated state, the fixed disconnector contact 213, thus the circuit breaker 105 is closed in the illustrated state. The circuit breaker 105 is driven via a rigid insulator 219 of a coupling rod 211 of the crank mechanism, wherein the insulator 219 and the coupling rod 211 are integrally formed. The crank gear is connected to the second, exclusively straight drive shaft 207 which drives or operates the disconnect switch 105. One end of the second drive shaft 207 is connected to a locking device 230, with the u. a. the second drive shaft 207 locks, d. H. can be blocked.

Die Verriegelungseinrichtung 230 weist drei Verriegelungsstellungen auf: In einer ersten Verriegelungsstellung wird eine Drehung der ersten Antriebswelle 205 ermöglicht, wohingegen eine Drehung der zweiten Antriebswelle 207 blockiert ist. In der zweiten Verriegelungsstellung wird eine Drehung der zweiten Antriebswelle 207 ermöglicht, wobei eine Drehung der ersten Antriebswelle 205 blockiert ist. In der dritten Verriegelungsstellung sind eine Drehung der ersten Antriebswelle 205 und der zweiten Antriebswelle 207 blockiert. Die Verriegelungsvorrichtung 230 ist dabei an jeweils einem Ende der ersten, zweiten und dritten Antriebswelle angeordnet. Die Verriegelungseinrichtung 230 umfasst einen Betätigungsschieber 234, der sich in der in Figur 2 dargestellten Position in einer mittleren Schiebestellung befindet, die der dritten Verriegelungsstellung zugehörig ist. Dabei kann von einer mittels eines Antriebs 258 und der dritten Antriebswelle 209 betätigten Schubstange 236 die Verriegelung in dieser dritten Verriegelungsstellung fixiert werden, so dass weder die erste Antriebswelle 205 noch die zweite Antriebswelle 207 betätigt werden kann. Dieser Betätigungsschieber 234 kann andernfalls nach links in eine linke Schiebestellung oder nach rechts in eine rechte Schiebestellung verschoben werden. Dabei wird die zweite Verriegelungsstellung bzw. die erste Verriegelungsstellung erreicht, in denen über in der Figur 2 nicht einzeln dargestellte Schubelemente entweder die erste Antriebswelle 205 oder die zweite Antriebswelle 207 blockiert ist. Damit liegt eine Verriegelungseinrichtung vor, die in einer ersten Verriegelungsstellung eine Drehung der zweiten Antriebswelle 207 blockiert, die in einer zweiten Verriegelungsstellung eine Drehung der ersten Antriebswelle 205 blockiert und die die in einer dritten Verriegelungsstellung eine Drehung der ersten Antriebswelle 205 und eine Drehung der zweiten Antriebswelle 207 blockiert.The locking device 230 has three locking positions: In a first locking position, rotation of the first drive shaft 205 is enabled, whereas rotation of the second drive shaft 207 is blocked. In the second locking position, rotation of the second drive shaft 207 is enabled with rotation of the first drive shaft 205 blocked. In the third Locking position, a rotation of the first drive shaft 205 and the second drive shaft 207 are blocked. The locking device 230 is arranged in each case at one end of the first, second and third drive shaft. The locking device 230 comprises an actuating slide 234 which is located in the in FIG. 2 shown position in a middle sliding position, which is the third locking position associated. In this case, can be fixed in this third locking position of a by means of a drive 258 and the third drive shaft 209 actuated push rod 236, so that neither the first drive shaft 205 nor the second drive shaft 207 can be actuated. This actuating slide 234 can otherwise be moved to the left in a left sliding position or to the right in a right sliding position. In this case, the second locking position or the first locking position is reached, in which over in the FIG. 2 not individually shown pushers either the first drive shaft 205 or the second drive shaft 207 is blocked. This is a locking device which blocks in a first locking position, a rotation of the second drive shaft 207, which blocks rotation of the first drive shaft 205 in a second locking position and in a third locking position rotation of the first drive shaft 205 and rotation of the second drive shaft 207 blocked.

Die Verriegelungseinrichtung 230 kann aber auch so ausgeführt sein, dass sie in einer ersten Verriegelungsstellung eine Drehung der zweiten Antriebswelle 207 und eine Drehung der dritten Antriebswelle 209 blockiert und eine Drehung der ersten Antriebswelle 205 ermöglicht, in einer zweiten Verriegelungsstellung eine Drehung der ersten Antriebswelle 205 und eine Drehung der dritten Antriebswelle 209 blockiert und eine Drehung der zweiten Antriebswelle 207 ermöglicht und in einer dritten Verriegelungsstellung eine Drehung der ersten Antriebswelle 205 und eine Drehung der zweiten Antriebswelle 207 blockiert und eine Drehung der dritten Antriebswelle 209 ermöglicht.However, the locking device 230 may also be designed so that it blocks a rotation of the second drive shaft 207 and a rotation of the third drive shaft 209 in a first locking position and allows rotation of the first drive shaft 205, in a second locking position rotation of the first drive shaft 205 and blocks rotation of the third drive shaft 209 and allows rotation of the second drive shaft 207 and, in a third lock position, blocks rotation of the first drive shaft 205 and rotation of the second drive shaft 207 and allows rotation of the third drive shaft 209.

Gemeinsam mit der Verriegelungseinrichtung 230 ist auch eine Anzeigevorrichtung 238 (Schaltstellungsanzeige) realisiert, welche die jeweils aktuelle Stellung der ersten, zweiten bzw. dritten Antriebswelle und damit die aktuelle Stellung des Erdungsschalters, des Trennschalters bzw. des Leistungsschalters anzeigt. Diese Anzeigevorrichtung weist Anzeigebereiche 238 auf, bei denen es sich um Öffnungen in einem Abdeckblech handelt, hinter denen je nach Drehposition der ersten Antriebswelle 205 bzw. der zweiten Antriebswelle 207 verschiedenfarbige Anzeigeelemente sichtbar sind.Together with the locking device 230, a display device 238 (switching position display) is realized, which indicates the respective current position of the first, second and third drive shaft and thus the current position of the earthing switch, the circuit breaker and the circuit breaker. This display device has display areas 238, which are openings in a cover plate, behind which, depending on the rotational position of the first drive shaft 205 and the second drive shaft 207 different colored display elements are visible.

Der elektrische Strom wird über die Durchführung 103, den Trennschalter 105 und über flexible Strombänder 250 zu dem Leistungsschalter 107 geleitet. Bei dem Leistungsschalter 107 handelt es sich um eine als solche bekannte Vakuumschaltröhre 107. Diese Vakuumschaltröhre 107 weist einen feststehenden Kontakt auf, der elektrisch über die Durchführung 109 mit dem Kabelanschluss 203 verbunden ist. Der Bewegkontakt der Vakuumschaltröhre 107 ist elektrisch mit dem Stromband 250 verbunden und wird mechanisch über eine als Isolator ausgebildete Zug-/Druckstange 252 in axialer Richtung der Vakuumschaltröhre bewegt. Zwischen Bewegkontakt der Vakuumschaltröhre 107 und der Zug-/Druckstange 252 ist eine Einrichtung zur Hubeinstellung 254 angeordnet. Die Zug-/Druckstange 252 wird mittels eines an der dritten Antriebswelle 209 befestigten Kipphebels 256 betätigt.The electrical current is passed to the power switch 107 via the feedthrough 103, the disconnect switch 105 and via flexible current bands 250. The circuit breaker 107 is a vacuum interrupter 107 known as such. This vacuum interrupter 107 has a fixed contact which is electrically connected to the cable terminal 203 via the leadthrough 109. The moving contact of the vacuum interrupter 107 is electrically connected to the current band 250 and is moved mechanically via a designed as an isolator pull / push rod 252 in the axial direction of the vacuum interrupter. Between moving contact of the vacuum interrupter 107 and the push / pull rod 252, a device for stroke adjustment 254 is arranged. The pull / push rod 252 is actuated by means of a rocker arm 256 attached to the third drive shaft 209.

Die dritte Antriebswelle 209 wird mittels eines Antriebs 258 angetrieben, bei dem es sich im Ausführungsbeispiel um einen Magnetantrieb handelt. In anderen Ausführungsbeispielen könnte der Antrieb 258 jedoch auch anders ausgestaltet sein, beispielsweise als Federspeicherantrieb. Der Antrieb 258 bewegt mittels eines weiteren Kipphebels 260 die dritte Antriebswelle 209 um lediglich wenige Grad Drehbewegung. Diese Drehbewegung reicht aus, um den Leistungsschalter 107 zu schließen bzw. zu öffnen.The third drive shaft 209 is driven by means of a drive 258, which is a magnetic drive in the exemplary embodiment. However, in other embodiments, the drive 258 could also be configured differently, for example as a spring-loaded drive. The drive 258 moves by means of another rocker arm 260, the third drive shaft 209 by only a few degrees of rotational movement. This rotational movement is sufficient to close or open the circuit breaker 107.

Der Bewegkontakt des Leistungsschalters 107 ist über das Stromband 250 weiterhin mit einem Erderkontakt 262 des Erdungsschalters 113 elektrisch verbunden. Der Erdungsschalter 113 weist weiterhin ein Erderlineal 264 auf, welches in einer Führung 266 vertikal verschiebbar geführt ist. Das Erderlineal 264 ist elektrisch mit Erdpotential verbunden. Im dargestellten Zustand berührt das Erderlineal 264 nicht den Erderkontakt 262, somit ist im dargestellten Zustand der Erdungsschalter 113 geöffnet. Bei dem Erderlineal 264 handelt es sich um eine Kurzschlussbrücke, die im eingeschalteten Zustand des Erdungsschalters die Erderkontakte 262 aller drei Phasen L1, L2 und L3 miteinander und mit Erdpotential verbindet.The moving contact of the power switch 107 is further electrically connected via the current band 250 to an earthing contact 262 of the earthing switch 113. The grounding switch 113 further has a grounding ruler 264, which is guided vertically displaceably in a guide 266. The grounding ruler 264 is electrically connected to ground potential. In the illustrated state, the grounding ruler 264 does not touch the earth contact 262, thus, in the illustrated state, the earthing switch 113 is opened. In the Erderlineal 264 is a shorting bridge that connects the earth contacts 262 of all three phases L1, L2 and L3 together and to ground potential in the on state of the earthing switch.

In Figur 3 ist eine Seitenansicht des Schaltgerätes 100 mit Blickrichtung auf den Erdungsschalter 113 dargestellt. Hierbei ist gut zu erkennen, dass das Erderlineal 264 in den Führungen 266 schiebebeweglich gelagert ist und mittels einer Koppelstange 300 eines Kurbelgetriebes von der ersten Antriebswelle 205 angetrieben wird. Das Erderlineal 264 wird dabei von zwei sich gleichzeitig bewegenden Koppelstangen 300 zweier Kurbelgetriebe nach oben bzw. nach unten geschoben. In der oberen Stellung gerät das Erderlineal 264 in elektrischem Kontakt mit den 3 Erderkontakten 262 der drei Phasen L1, L2 und L3. (Von diesen drei Erderkontakten 262 ist nur der rechte Erderkontakt der Phase sichtbar, da die Erderkontakte der Phasen L2 und L3 von einer Halterung verdeckt sind.) Das Erderlineal 264 verbindet dann die Erderkontakte 262 aller drei Phasen L1, L2 und L3 miteinander und mit Erdpotential.In FIG. 3 is a side view of the switching device 100 viewed in the direction of the grounding switch 113. It can be clearly seen that the Erderlineal 264 is mounted in the guides 266 slidingly movable and is driven by a coupling rod 300 of a crank gear from the first drive shaft 205. The Erderlineal 264 is thereby pushed by two simultaneously moving coupling rods 300 of two crank gear up or down. In the upper position, the Erder ruler 264 comes into electrical contact with the 3 Erderkontakten 262 of the three phases L1, L2 and L3. (Of these three earth contacts 262, only the right earth contact of the phase is visible because the earth contacts of phases L2 and L3 are obscured by a support.) Earth electrode 264 then connects the earth contacts 262 of all three phases L1, L2 and L3 to each other and to ground potential ,

Die erste Antriebswelle 205 wird im Ausführungsbeispiel mittels einer Kurbel angetrieben, die steckbar mit dem rechten Ende der ersten Antriebswelle 205 verbunden werden kann (in der Figur 3 nicht dargestellt). In anderen Ausführungsbeispielen kann die erste Antriebswelle 205 jedoch auch mittels anderer Antriebe angetrieben werden, beispielsweise mittels eines Motorantriebs. Dasselbe gilt auch für die zweite Antriebswelle 207, die in der Figur 3 durch die erste Antriebswelle 205 verdeckt wird.The first drive shaft 205 is driven in the embodiment by means of a crank which can be pluggable connected to the right end of the first drive shaft 205 (in the FIG. 3 not shown). In other embodiments, however, the first drive shaft 205 can also be driven by means of other drives, for example by means of a motor drive. The same applies to the second drive shaft 207, which in the FIG. 3 is covered by the first drive shaft 205.

In Figur 4 ist in einer weiteren Seitenansicht die Seite des Schaltgerätes 100 dargestellt, auf der der Trennschalter 105 angeordnet ist. Hierbei ist gut zu erkennen, wie der Trennerbolzen 215 über die Koppelstange 211 von der zweiten Antriebswelle 207 angetrieben wird.In FIG. 4 is the side of the switching device 100 shown in a further side view, on which the circuit breaker 105 is arranged. It is easy to see how the separating bolt 215 is driven by the coupling rod 211 from the second drive shaft 207.

Figur 5 zeigt eine Schnittansicht durch das Schaltgerät 100 entlang der Schnittebene V-V der Figur 3. Hierbei ist auf der rechten Seite gut das erste Kurbelgetriebe zu erkennen, welches mittels der Koppelstange 211 die zweite Antriebswelle 207 mit dem linear schiebegeführten Trennerbolzen 215 verbindet. Auf der linken Seite ist das zweite Kurbelgetriebe zu erkennen, welches mittels der Koppelstange 300 die erste Antriebswelle 205 mit dem linear schiebegeführten Erderlineal 264 verbindet. Weiterhin ist auch der Erderkontakt 262 zu erkennen, in den das Erderlineal 264 beim Schließen des Erdungsschalters 113 einfährt. FIG. 5 shows a sectional view through the switching device 100 along the sectional plane VV of FIG. 3 , Here, on the right side, the first crank mechanism can be seen well, which connects the second drive shaft 207 to the linear slide-guided separating bolt 215 by means of the coupling rod 211. On the left side of the second crank mechanism can be seen, which connects by means of the coupling rod 300, the first drive shaft 205 with the linear sliding-guided Erderlineal 264. Furthermore, the earth contact 262 can be seen, into which the grounding ruler 264 retracts when closing the earthing switch 113.

Es wurde ein Schaltgerät beschrieben, bei dem der Erdungsschalter mit einer ersten geraden Antriebswelle gekoppelt ist und der Trennschalter mit einer zweiten geraden Antriebswelle gekoppelt ist. Der Leistungsschalter kann zwischen der ersten Antriebswelle und der zweiten Antriebswelle angeordnet sein, die beiden Antriebswellen können parallel zueinander ausgerichtet sein. Der Leistungsschalter kann mit einer dritten geraden Antriebswelle gekoppelt sein, die parallel zu der ersten Antriebswelle und der zweiten Antriebswelle angeordnet sei kann. Dadurch ergibt sich ein besonders einfacher Aufbau des Schaltgerätes, da die Antriebsbewegungen für den Erdungsschalter, den Trennschalter und den Leistungsschalter auf besonders einfache Art und Weise mittels gerader Antriebswellen übertragen werden können und insbesondere keine in verschiedene Richtungen ausgerichtete Teilwellen mit komplizierten Umlenkverbindungen zwischen diesen benötigt werden. Durch die parallele Ausrichtung der ersten Antriebswelle mit der zweiten Antriebswelle lässt sich darüber hinaus in besonders einfacher Weise eine Verriegelungseinrichtung an den Enden dieser beiden Wellen anbringen, wobei mit dieser Verriegelungseinrichtung die erste Antriebswelle, die zweite Antriebswelle oder auch die dritte Antriebswelle blockiert werden kann. Insgesamt ergibt sich damit ein Schaltgerät, das äußerst einfach und übersichtlich aufgebaut ist und bei dem zur Übertragung der Antriebsbewegungen neben Kipphebeln und Kurbelgetrieben fast ausschließlich drei gerade Antriebswellen eingesetzt werden. Ein derartiges Schaltgerät lässt sich daher sehr einfach und damit kostengünstig herstellen und warten.It has been described a switching device in which the earthing switch is coupled to a first straight drive shaft and the disconnector is coupled to a second straight drive shaft. The power switch may be disposed between the first drive shaft and the second drive shaft, the two drive shafts may be aligned parallel to each other. The circuit breaker may be coupled to a third straight drive shaft which may be parallel to the first drive shaft and the second drive shaft. This results in a particularly simple construction of the switching device, since the drive movements for the earthing switch, the circuit breaker and the circuit breaker can be transmitted in a particularly simple manner by means of straight drive shafts and in particular aligned in different directions part waves with complicated deflecting connections between them are needed. Due to the parallel alignment of the first drive shaft with the second drive shaft, a locking device can moreover be attached to the ends of these two shafts in a particularly simple manner, whereby the first drive shaft, the second drive shaft or also the third drive shaft can be blocked with this locking device. Overall, this results in a switching device that is extremely simple and clear and in which almost exclusively three straight drive shafts are used to transfer the drive movements in addition to rocker arms and crank gears. Such a switching device can therefore be very simple and therefore inexpensive to manufacture and maintain.

Claims (9)

  1. Switching device (100), which has at least one circuit breaker or load-break switch (107), a grounding switch (113) and a switch disconnector (105), in which the grounding switch (113) is coupled to a first straight drive shaft (205) and the switch disconnector (105) is coupled to a second straight drive shaft (207),
    characterized in that
    the circuit breaker or load-break switch (107) is coupled to a third straight drive shaft (209),
    the first drive shaft (205) and the second drive shaft (207) running parallel to one another, and
    the third drive shaft (209) running parallel to the first drive shaft (205) and the second drive shaft (207).
  2. Switching device according to Claim 1,
    characterized in that
    the first drive shaft (205) and the second drive shaft (207) can rotate independently of one another.
  3. Switching device according to either of Claims 1 and 2,
    characterized in that
    the circuit breaker or load-break switch (107) is arranged between the first drive shaft (205) and the second drive shaft (207).
  4. Switching device according to one of the preceding claims,
    characterized in that
    the first drive shaft (205) is coupled via a crank drive to the grounding switch (113), and/or
    the second drive shaft (207) is coupled via a crank drive to the switch disconnector (105).
  5. Switching device according to one of the preceding claims,
    characterized in that
    the switching device has a locking device (230), which blocks rotation of the second drive shaft (207) in a first locking position, blocks rotation of the first drive shaft (205) in a second locking position, and blocks rotation of the first drive shaft (205) and rotation of the second drive shaft (207) in a third locking position.
  6. Switching device according to one of the preceding claims,
    characterized in that
    the locking device (230) is arranged at in each case one end of the first drive shaft (205), the second drive shaft (207) and the third drive shaft (209).
  7. Switching device according to one of the preceding claims,
    characterized in that
    the switching device has an indicating apparatus (238), which indicates the position of the first drive shaft (205) and/or of the second drive shaft (207).
  8. Switching device according to one of the preceding claims,
    characterized in that
    the indicating apparatus (238) is arranged at in each case one end of the first drive shaft (205) and of the second drive shaft (207).
  9. Switching device according to one of the preceding claims,
    characterized in that
    the grounding switch (113) is arranged on one side of the circuit breaker or load-break switch (107), and the switch disconnector (105) is arranged on the opposite side of the circuit breaker or load-break switch (107).
EP09782030.2A 2009-08-20 2009-08-20 Switchgear Not-in-force EP2467863B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2009/060772 WO2011020509A1 (en) 2009-08-20 2009-08-20 Switchgear

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Publication Number Publication Date
EP2467863A1 EP2467863A1 (en) 2012-06-27
EP2467863B1 true EP2467863B1 (en) 2014-06-04

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CN (1) CN102484012A (en)
WO (1) WO2011020509A1 (en)

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DE102011085995A1 (en) * 2011-11-09 2013-05-16 Siemens Aktiengesellschaft Drive module for a multi-pole circuit breaker
US8729985B2 (en) * 2012-01-23 2014-05-20 Electro-Mechanical Corporation Switchgear visible disconnect mechanical interlock
US9070517B2 (en) * 2012-08-13 2015-06-30 Electro-Mechanical Corporation Vacuum interrupter and linear disconnect switch
CN102938344A (en) * 2012-12-09 2013-02-20 安徽省电力公司蚌埠供电公司 Disconnector misoperation prevention device
CN103426677B (en) * 2013-08-06 2016-06-22 国家电网公司 A kind of three position transmission devices
CN104036991B (en) * 2013-12-07 2016-08-17 国家电网公司 There is the tri-station isolating switch powder operation device of anti-misoperation function
CN104485248B (en) * 2014-12-31 2017-05-10 嘉兴赛铁龙电气有限公司 Earthing switch
WO2016119147A1 (en) * 2015-01-28 2016-08-04 Abb Technology Ltd Mechanical interlock assembly for disconnector and earthing switch
CN104600577B (en) * 2015-02-10 2017-01-25 胡俊兵 Intelligent grounding knife switch of high-voltage switch cabinet
CN106683915A (en) * 2017-02-15 2017-05-17 益和电气集团股份有限公司 Insulation spindle and load switch
CN108037369A (en) * 2018-01-17 2018-05-15 佛山市川东磁电股份有限公司 A kind of TDS detectors and its packaging technology
CN108630474A (en) * 2018-07-02 2018-10-09 河南华盛隆源电气有限公司 The interlocking mechanism of breaker and disconnecting switch

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US7902480B2 (en) * 2007-06-13 2011-03-08 Hitachi, Ltd. Vacuum insulated switchgear
JP5070178B2 (en) * 2008-10-14 2012-11-07 株式会社日立製作所 Switchgear

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WO2011020509A1 (en) 2011-02-24
CN102484012A (en) 2012-05-30
EP2467863A1 (en) 2012-06-27

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