EP1786010A1 - Electrical switchgear - Google Patents

Electrical switchgear Download PDF

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Publication number
EP1786010A1
EP1786010A1 EP06021102A EP06021102A EP1786010A1 EP 1786010 A1 EP1786010 A1 EP 1786010A1 EP 06021102 A EP06021102 A EP 06021102A EP 06021102 A EP06021102 A EP 06021102A EP 1786010 A1 EP1786010 A1 EP 1786010A1
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EP
European Patent Office
Prior art keywords
switchgear
circuit breaker
support frame
contact arms
grounding
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Granted
Application number
EP06021102A
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German (de)
French (fr)
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EP1786010B1 (en
Inventor
Achim Stelter
Lutz Dr. Ing. Drews
Frank Nienrodt
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General Electric Technology GmbH
Original Assignee
Areva Energietechnik GmbH
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Application filed by Areva Energietechnik GmbH filed Critical Areva Energietechnik GmbH
Publication of EP1786010A1 publication Critical patent/EP1786010A1/en
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    • 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
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact

Definitions

  • the invention relates to an electrical switchgear according to the preamble of claim 1.
  • switchgear in which, for example, three circuit breaker poles are arranged on a support frame.
  • Each of the circuit breaker poles is assigned a grounding switch.
  • the respectively assigned circuit breaker pole can be earthed.
  • the earthing switches have for this purpose pivotable contact arms, which are in a switch-on in electrical contact with a terminal of the respective associated circuit breaker pole. In a Off position, the contact arms are pivoted about 90 degrees about an arranged in the region of the support frame pivot axis. In the OFF position, one or more of the contact arms project outwardly from the support frame.
  • the object of the invention is to provide an electrical switchgear with a reduced volume of construction.
  • the invention solves this problem by an electrical switchgear according to claim 1.
  • the electrical switchgear at least two side by side arranged on a support frame circuit breaker poles are provided. Furthermore, there are two linkages driven by a grounding switch, which are assigned to the two circuit breaker poles and provided for their electrical grounding. Each of the earthing switch has a pivotable contact arm, the pivot axis is aligned approximately perpendicular to the main extension direction of the support frame. The two arranged at the ends of the support frame contact arms are pivotable from the linkage in opposite directions.
  • the required construction volume of the switchgear according to the invention is thus much lower compared to the prior art.
  • the pivot axes of the contact arms are aligned approximately horizontally.
  • the contact arms in the closed position are arranged approximately vertically and in the off position approximately horizontally.
  • the contact arms are arranged in the off position substantially in front of the support frame.
  • Each of the circuit breaker poles has two terminals.
  • each of the terminals is assigned a separate contact arm for grounding, or that the same connection arm is assigned to the grounding of the two terminals.
  • Figure 1 shows a schematic front view of an embodiment of an electrical switchgear according to the invention from the direction V of Figure 2
  • Figure 2 shows a schematic side view of the switchgear of Figure 1 from the direction S of Figure 1
  • Figure 3 shows a schematic plan view of the switchgear of the figure 1 from the direction D of Figure 1
  • Figure 4 shows a schematic perspective view of a Embodiment of the linkage of the switchgear of Figure 1.
  • a three-phase electrical switchgear 10 which has a cultivschalterpol 11 and a grounding switch 12 for each of the phases.
  • the three circuit breaker poles 11 and the three earthing switches 12 are held side by side on a support frame 13 which can be set up by means of two support feet 14 on a floor.
  • Each of the three circuit breaker poles 11 is preferably of similar design. It may be a known high-voltage circuit breaker or a known high-voltage circuit breaker with disconnector function, in particular according to IEC 62271-108 or a known high-voltage circuit breaker. Each of the three circuit breaker poles 11 is formed substantially cylindrical and projects from the support frame 13 in an approximately vertical upward direction.
  • Each of the three circuit breaker poles 11 is provided with a first terminal 16, which is arranged approximately in the middle of the circuit breaker pole 11 and thus spaced from the support frame 13, and with a second terminal 17, which is approximately at the free end of counselschalterpols 11 is arranged and thus has a distance from the first terminal 16.
  • insulators 18 are present, in the interior of the other components of the circuit breaker pole 11 are housed.
  • Each of the three circuit breaker poles 11 is assigned to one of the earthing switches 12. All three earthing switches 12 are electrically connected to earth or ground via the support frame 13 and the support feet 14, for example. It is possible that movable components of the earthing switch 12 are electrically connected to the support frame 13 and / or the support legs 14 by means of flexible earth cables or with the aid of sliding contacts.
  • the three earthing switches 12 are of a similar construction, for which reason only one of the three earthing switches 12 will be described in more detail below.
  • the earthing switch 12 is a pivotable contact arm 21 or 22, which can be swung back and forth between a switch-on position and a switch-off position by about 90 degrees. In the on position, the terminal 16 of the circuit breaker pole 11 is grounded through the associated grounding switch 12, while in the off position of the contact arm 21 and 22 is not the case.
  • the pivot axis of the contact arm 21 or 22 is arranged approximately at the lower end of the associated circuit breaker pole 11 and there in the region of the support frame 13.
  • the support frame 13 has a longitudinal direction in which it extends mainly. This represents the Hauptausdehnungsraum of the support frame 13.
  • the pivot axis of the three contact arms 21, 22 is on the one hand aligned approximately perpendicular to this longitudinal direction or Hauptausdehnungsraum.
  • the pivot axis of the three contact arms 21, 22 is aligned substantially perpendicular to the cylinder axis of the respectively associated circuit breaker pole 11. If the circuit breaker poles 11, as described, substantially vertically aligned, the pivot axes of the contact arms 21, 22 are arranged substantially horizontally.
  • the pivot axis of one of the three contact arms 21 is shown by way of example as a dashed line and designated by the reference numeral 20.
  • the contact arm 21 or 22 In the switch-on position, which is shown in dashed lines in FIG. 1, the contact arm 21 or 22 is oriented in an approximately vertical direction. The free end of the contact arm 21 or 22 is in electrical contact with the first terminal 16 of the associated circuit breaker pole 11. In the off position, the in 1 is shown by solid lines, the contact arm 21 and 22 is arranged approximately vertically. The free end of the contact arm 21 or 22 is in no electrical contact with any other component.
  • contact arm 22 pivots in the illustration of Figure 1 from the closed position in the counterclockwise direction to the left in the open position. This is indicated in the figure 1 by a dashed quadrant 25.
  • the middle contact arm 21 can optionally pivot in both directions.
  • a linkage 27 is provided in the region of the support frame 13, which can be driven by a drive 28. With the aid of this linkage 27, the three contact arms 21 and 22 can be moved substantially simultaneously by the drive 28 from the on position to the off position or vice versa.
  • the linkage is designed such that the two arranged at the ends of the support frame 13 contact arms 21, 22 pivot in opposite directions.
  • the drive 28 has a rotatable drive shaft 31 which is aligned approximately in the vertical direction.
  • a connecting lever 32 is provided, which is pivotable in an approximately horizontal plane.
  • This connecting lever 32 is coupled via a connecting rod 33 with a lever 34 which is associated with the central contact arm 21 and which is pivotable in an approximately vertical plane.
  • This lever 34 is coupled via two rods 35, 36 with two further levers 37, 38, which are associated with the two outer contact arms 21, 22, and which are also pivotable in an approximately vertical plane.
  • the three aforementioned levers 34, 37, 38 are connected via respective shafts 39 with the contact arms 21, 22.
  • the shafts 39 are supported within the support frame 13 and aligned approximately horizontally.
  • a rotational movement 41 of the drive shaft 31 in a clockwise direction leads to a pushing movement 42 of the connecting rod 33 in the direction shown in FIG.
  • the taking place in an approximately horizontal plane pivotal movement of the connecting lever 32 is thereby converted into a pivoting movement 43 of the lever 34 in an approximately vertical plane.
  • this pivotal movement 43 is transmitted to the lever 37, 38.
  • the two rods 37, 38 perform thrust movements 44, 45, which are opposite to each other, as shown in FIG.
  • the shaft 39 arranged on the left side carries out the same pivoting movement 43 as the central shaft in the counterclockwise direction, but the shaft 39 provided on the right side has an opposite pivoting movement 46 in the clockwise direction.
  • the pivotal movements 43, 46 are transmitted to the respective contact arms 21, 22. This has the consequence that the two outer contact arms 21, 22 pivot in opposite directions.
  • the grounding switches 12 of Figures 1 to 4 may also be designed as a so-called pan-push earthing switch. This means that the earthing switches are first pivoted in the manner described in an approximately vertical direction, to thereafter a pushing movement approximately in to do this vertical direction. With this pushing movement, the contact arms 21, 22 of the earthing switch 12 dip into annular or similarly formed contact pieces which protrude from the terminals 16. In this way, a secure electrical connection between the contact arms 21, 22 and the terminals 16 is achieved, which remains even at the forces occurring at higher currents.
  • the second terminals 17 of the circuit breaker poles 11 are grounded.
  • a further linkage can be provided on the back of the support frame 13, which is coupled with additional contact arms. These contact arms can then be pivoted to a switch-on position in which the second terminals 17 are grounded separately and independently of the first terminals 16.
  • the contact arms 21, 22 explained with reference to FIGS. 1 to 4 may be designed to be longer than illustrated so that they can ground not only the first terminals 16 but also the second terminals 17 at the same time. In both cases, can be achieved by an appropriate choice of the horizontal distance and the vertical height of the circuit breaker poles 11 that the central contact arm 21 in the off position substantially in front of the support frame 13 and so that is arranged substantially in the field of switchgear 10.
  • a mechanical interlock between the circuit breaker poles 11 and the earthing switches 12 is provided.
  • This interlock may be designed, for example, such that the grounding switches 12 can only be moved into the on position when the circuit breaker poles 11 are electrically opened, and / or that the circuit breaker poles 11 can only be electrically closed when the earthing switches 12 are in their position Switch off position.
  • the common drive 28 shown in FIGS. 1 to 4 can be replaced for all three earthing switches 12 by three separate drives which are assigned to the respective grounding switches 12.
  • the circuit breaker poles 11 are also coupled to a drive which is assigned to the support frame 13. This can be a common drive for all three circuit breaker poles 12 or individual drives for the respective circuit breaker poles 12.

Abstract

The switchgear has two circuit breaker poles arranged on a support frame. Two earth switches are driven by a rod. Each switch has rotatable contact arms (21, 22), whose axis of rotation is aligned perpendicular to a main expansion direction of the support frame. The contact arms arranged at the ends of the frame are rotatable by the rod in directions opposite to each other towards the frame.

Description

Die Erfindung betrifft eine elektrische Schaltanlage nach dem Oberbegriff des Anspruchs 1.The invention relates to an electrical switchgear according to the preamble of claim 1.

Es sind Schaltanlagen bekannt, bei denen beispielsweise drei Leistungsschalterpole auf einem Tragrahmen angeordnet sind. Jedem der Leistungsschalterpole ist ein Erdungsschalter zugeordnet. Mit Hilfe der Erdungsschalter kann der jeweils zugeordnete Leistungsschalterpol geerdet werden. Die Erdungsschalter weisen zu diesem Zweck schwenkbare Kontaktarme auf, die in einer Einschaltposition in elektrischem Kontakt zu einem Anschluss des jeweils zugehörigen Leistungsschalterpols stehen. In einer Ausschaltposition werden die Kontaktarme um etwa 90 Grad um eine im Bereich des Tragrahmens angeordnete Schwenkachse geschwenkt. In der Ausschaltposition stehen einer oder mehrere der Kontaktarme nach außen von dem Tragrahmen ab.There are known switchgear in which, for example, three circuit breaker poles are arranged on a support frame. Each of the circuit breaker poles is assigned a grounding switch. With the aid of the earthing switch, the respectively assigned circuit breaker pole can be earthed. The earthing switches have for this purpose pivotable contact arms, which are in a switch-on in electrical contact with a terminal of the respective associated circuit breaker pole. In a Off position, the contact arms are pivoted about 90 degrees about an arranged in the region of the support frame pivot axis. In the OFF position, one or more of the contact arms project outwardly from the support frame.

Dies bringt den Nachteil mit sich, dass das Bauvolumen der elektrischen Schaltanlage relativ groß ist.This has the disadvantage that the construction volume of the electrical switchgear is relatively large.

Aufgabe der Erfindung ist es, eine elektrische Schaltanlage mit einem verminderten Bauvolumen zu schaffen.The object of the invention is to provide an electrical switchgear with a reduced volume of construction.

Die Erfindung löst diese Aufgabe durch eine elektrische Schaltanlage nach dem Anspruch 1.The invention solves this problem by an electrical switchgear according to claim 1.

Bei der erfindungsgemäßen elektrischen Schaltanlage sind wenigstens zwei nebeneinander auf einem Tragrahmen angeordnete Leistungsschalterpole vorgesehen. Weiterhin sind zwei über ein Gestänge angetriebene Erdungsschalter vorhanden, die den beiden Leistungsschalterpolen zugeordnet und zu deren elektrischen Erdung vorgesehen sind. Jeder der Erdungsschalter weist einen schwenkbaren Kontaktarm auf, dessen Schwenkachse etwa lotrecht zur Hauptausdehnungsrichtung des Tragrahmens ausgerichtet ist. Die beiden an den Enden des Tragrahmens angeordneten Kontaktarme sind dabei von dem Gestänge in einander entgegengesetzte Richtungen schwenkbar.In the electrical switchgear according to the invention at least two side by side arranged on a support frame circuit breaker poles are provided. Furthermore, there are two linkages driven by a grounding switch, which are assigned to the two circuit breaker poles and provided for their electrical grounding. Each of the earthing switch has a pivotable contact arm, the pivot axis is aligned approximately perpendicular to the main extension direction of the support frame. The two arranged at the ends of the support frame contact arms are pivotable from the linkage in opposite directions.

Durch die einander entgegengesetzte Schwenkbarkeit der beiden äußeren Kontaktarme wird erreicht, dass die Kontaktarme zu keinem Zeitpunkt von dem Tragrahmen nach außen abstehen. Auch in der Ausschaltposition der Kontaktarme sind die beiden an den Enden des Tragrahmens angeordneten Kontaktarme nach innen in Richtung zu dem Tragrahmen geschwenkt und stehen damit nicht wesentlich nach außen über den Tragrahmen über.By opposing pivoting of the two outer contact arms is achieved that the contact arms at no time protrude from the support frame to the outside. Even in the off position of the contact arms, the two arranged at the ends of the support frame contact arms are pivoted inwardly toward the support frame and thus are not significantly over on the outside over the support frame.

Das erforderliche Bauvolumen der erfindungsgemäßen Schaltanlage ist damit im Vergleich zum Stand der Technik wesentlich geringer.The required construction volume of the switchgear according to the invention is thus much lower compared to the prior art.

Bei einer vorteilhaften Ausgestaltung der Erfindung sind die Schwenkachsen der Kontaktarme etwa horizontal ausgerichtet. Damit sind die Kontaktarme in der Einschaltstellung etwa vertikal angeordnet und in der Ausschaltstellung etwa horizontal.In an advantageous embodiment of the invention, the pivot axes of the contact arms are aligned approximately horizontally. Thus, the contact arms in the closed position are arranged approximately vertically and in the off position approximately horizontally.

Bei einer weiteren vorteilhaften Ausgestaltung der Erfindung sind die Kontaktarme in der Ausschaltstellung im wesentlichen vor dem Tragrahmen angeordnet. Durch diese Maßnahme wird das erforderliche Bauvolumen der erfindungsgemäßen Schaltanlage weiter vermindert.In a further advantageous embodiment of the invention, the contact arms are arranged in the off position substantially in front of the support frame. By this measure, the required construction volume of the switchgear according to the invention is further reduced.

Jeder der Leistungsschalterpole weist zwei Anschlüsse auf. Bei weiteren vorteilhaften Ausgestaltungen der Erfindung kann vorgesehen sein, dass jedem der Anschlüsse ein separater Kontaktarm zur Erdung zugeordnet ist, oder dass den beiden Anschlüssen derselbe Kontaktarm zur Erdung zugeordnet ist.Each of the circuit breaker poles has two terminals. In further advantageous embodiments of the invention it can be provided that each of the terminals is assigned a separate contact arm for grounding, or that the same connection arm is assigned to the grounding of the two terminals.

Weitere Merkmale, Anwendungsmöglichkeiten und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen der Erfindung, die in den Figuren dargestellt sind. Dabei bilden alle beschriebenen oder dargestellten Merkmale für sich oder in beliebiger Kombination den Gegenstand der Erfindung, unabhängig von ihrer Zusammenfassung in den Patentansprüchen oder deren Rückbeziehung sowie unabhängig von ihrer Formulierung bzw. Darstellung in der Beschreibung bzw. in den Figuren.Other features, applications and advantages of the invention will become apparent from the following description of embodiments of the invention, which are illustrated in the figures. All described or illustrated features, alone or in any combination form the subject matter of the invention, regardless of their summary in the claims or their dependency and regardless of their formulation or representation in the description or in the figures.

Figur 1 zeigt eine schematische Vorderansicht eines Ausführungsbeispiels einer erfindungsgemäßen elektrischen Schaltanlage aus der Richtung V der Figur 2, Figur 2 zeigt eine schematische Seitenansicht der Schaltanlage der Figur 1 aus der Richtung S der Figur 1, Figur 3 zeigt eine schematische Draufsicht auf die Schaltanlage der Figur 1 aus der Richtung D der Figur 1, und Figur 4 zeigt eine schematische Perspektivdarstellung eines Ausführungsbeispiels des Gestänges der Schaltanlage der Figur 1.Figure 1 shows a schematic front view of an embodiment of an electrical switchgear according to the invention from the direction V of Figure 2, Figure 2 shows a schematic side view of the switchgear of Figure 1 from the direction S of Figure 1, Figure 3 shows a schematic plan view of the switchgear of the figure 1 from the direction D of Figure 1, and Figure 4 shows a schematic perspective view of a Embodiment of the linkage of the switchgear of Figure 1.

In den Figuren 1, 2 und 3 ist eine dreiphasige elektrische Schaltanlage 10 dargestellt, die für jede der Phasen einen Leistungsschalterpol 11 und einen Erdungsschalter 12 aufweist. Die drei Leistungsschalterpole 11 und die drei Erdungsschalter 12 sind nebeneinander an einem Tragrahmen 13 gehalten, der mittels zweier Tragfüße 14 auf einem Boden aufstellbar ist.In Figures 1, 2 and 3, a three-phase electrical switchgear 10 is shown, which has a Leistungsschalterpol 11 and a grounding switch 12 for each of the phases. The three circuit breaker poles 11 and the three earthing switches 12 are held side by side on a support frame 13 which can be set up by means of two support feet 14 on a floor.

Jeder der drei Leistungsschalterpole 11 ist vorzugsweise gleichartig ausgebildet. Es kann sich dabei um einen bekannten Hochspannungsleistungsschalter oder um einen bekannten Hochspannungsleistungsschalter mit Trennschalterfunktion insbesondere nach IEC 62271-108 oder um einen bekannten Hochspannungs-Lastschalter handeln. Jeder der drei Leistungsschalterpole 11 ist im wesentlichen zylindrisch ausgebildet und steht von dem Tragrahmen 13 in etwa vertikaler Richtung nach oben ab.Each of the three circuit breaker poles 11 is preferably of similar design. It may be a known high-voltage circuit breaker or a known high-voltage circuit breaker with disconnector function, in particular according to IEC 62271-108 or a known high-voltage circuit breaker. Each of the three circuit breaker poles 11 is formed substantially cylindrical and projects from the support frame 13 in an approximately vertical upward direction.

Jeder der drei Leistungsschalterpole 11 ist mit einem ersten Anschluss 16 versehen, der etwa in der Mitte des Leistungsschalterpols 11 angeordnet ist und der damit einen Abstand zu dem Tragrahmen 13 aufweist, sowie mit einem zweiten Anschluss 17, der etwa am freien Ende des Leistungsschalterpols 11 angeordnet ist und der damit einen Abstand zu dem ersten Anschluss 16 besitzt. Im Bereich der vorgenannten Abstände sind Isolatoren 18 vorhanden, in deren Innenraum die weiteren Bauteile des Leistungsschalterpols 11 untergebracht sind.Each of the three circuit breaker poles 11 is provided with a first terminal 16, which is arranged approximately in the middle of the circuit breaker pole 11 and thus spaced from the support frame 13, and with a second terminal 17, which is approximately at the free end of Leistungsschalterpols 11 is arranged and thus has a distance from the first terminal 16. In the range of the aforementioned distances insulators 18 are present, in the interior of the other components of the circuit breaker pole 11 are housed.

Jedem der drei Leistungsschalterpole 11 ist einer der Erdungsschalter 12 zugeordnet. Alle drei Erdungsschalter 12 sind beispielsweise über den Tragrahmen 13 und die Tragfüße 14 elektrisch mit Erde bzw. Masse verbunden. Dabei ist es möglich, dass bewegliche Bauteile der Erdungsschalter 12 mit Hilfe von flexiblen Erdseilen oder mit Hilfe von Gleitkontakten elektrisch mit dem Tragrahmen 13 und/oder den Tragfüßen 14 verbunden sind. Die drei Erdungsschalter 12 sind gleichartig aufgebaut, weshalb nachfolgend nur einer der drei Erdungsschalter 12 näher beschrieben wird.Each of the three circuit breaker poles 11 is assigned to one of the earthing switches 12. All three earthing switches 12 are electrically connected to earth or ground via the support frame 13 and the support feet 14, for example. It is possible that movable components of the earthing switch 12 are electrically connected to the support frame 13 and / or the support legs 14 by means of flexible earth cables or with the aid of sliding contacts. The three earthing switches 12 are of a similar construction, for which reason only one of the three earthing switches 12 will be described in more detail below.

Bei dem Erdungsschalter 12 handelt es sich um einen schwenkbaren Kontaktarm 21 bzw. 22, der zwischen einer Einschaltposition und einer Ausschaltposition um etwa 90 Grad hin- und hergeschwenkt werden kann. In der Einschaltposition ist der Anschluss 16 des Leistungsschalterpols 11 über den zugehörigen Erdungsschalter 12 geerdet, während dies in der Ausschaltposition des Kontaktarms 21 bzw. 22 nicht der Fall ist.The earthing switch 12 is a pivotable contact arm 21 or 22, which can be swung back and forth between a switch-on position and a switch-off position by about 90 degrees. In the on position, the terminal 16 of the circuit breaker pole 11 is grounded through the associated grounding switch 12, while in the off position of the contact arm 21 and 22 is not the case.

Die Schwenkachse des Kontaktarms 21 bzw. 22 ist etwa am unteren Ende des zugehörigen Leistungsschalterpols 11 und dort im Bereich des Tragrahmens 13 angeordnet. Der Tragrahmen 13 weist eine Längsrichtung auf, in der er sich hauptsächlich erstreckt. Dies stellt die Hauptausdehnungsrichtung des Tragrahmens 13 dar. Die Schwenkachse der drei Kontaktarme 21, 22 ist einerseits etwa lotrecht zu dieser Längsrichtung bzw. Hauptausdehnungsrichtung ausgerichtet. Andererseits ist die Schwenkachse der drei Kontaktarme 21, 22 im wesentlichen lotrecht zur Zylinderachse des jeweils zugehörigen Leistungsschalterpols 11 ausgerichtet. Sind die Leistungsschalterpole 11, wie beschrieben, im wesentlichen vertikal ausgerichtet, so sind die Schwenkachsen der Kontaktarme 21, 22 im wesentlichen horizontal angeordnet. In der Figur 3 ist die Schwenkachse eines der drei Kontaktarme 21 beispielhaft als gestrichelte Linie dargestellt und mit der Bezugsziffer 20 gekennzeichnet.The pivot axis of the contact arm 21 or 22 is arranged approximately at the lower end of the associated circuit breaker pole 11 and there in the region of the support frame 13. The support frame 13 has a longitudinal direction in which it extends mainly. This represents the Hauptausdehnungsrichtung of the support frame 13. The pivot axis of the three contact arms 21, 22 is on the one hand aligned approximately perpendicular to this longitudinal direction or Hauptausdehnungsrichtung. On the other hand, the pivot axis of the three contact arms 21, 22 is aligned substantially perpendicular to the cylinder axis of the respectively associated circuit breaker pole 11. If the circuit breaker poles 11, as described, substantially vertically aligned, the pivot axes of the contact arms 21, 22 are arranged substantially horizontally. In the figure 3, the pivot axis of one of the three contact arms 21 is shown by way of example as a dashed line and designated by the reference numeral 20.

In der Einschaltposition, die in der Figur 1 mit gestrichelten Linien dargestellt ist, ist der Kontaktarm 21 bzw. 22 in eine etwa vertikale Richtung ausgerichtet. Das freie Ende des Kontaktarms 21 bzw. 22 steht in elektrischem Kontakt mit dem ersten Anschluss 16 des zugehörigen Leistungsschalterpols 11. In der Ausschaltposition, die in der Figur 1 mit durchgezogenen Linien dargestellt ist, ist der Kontaktarm 21 bzw. 22 etwa vertikal angeordnet. Das freie Ende des Kontaktarms 21 bzw. 22 steht mit keinem anderen Bauteil in elektrischem Kontakt.In the switch-on position, which is shown in dashed lines in FIG. 1, the contact arm 21 or 22 is oriented in an approximately vertical direction. The free end of the contact arm 21 or 22 is in electrical contact with the first terminal 16 of the associated circuit breaker pole 11. In the off position, the in 1 is shown by solid lines, the contact arm 21 and 22 is arranged approximately vertically. The free end of the contact arm 21 or 22 is in no electrical contact with any other component.

Der in der Figur 1 links am Tragrahmen 13 angeordnete Kontaktarm 21 schwenkt in der Darstellung der Figur 1 von der Einschaltstellung im Uhrzeigersinn nach rechts in die Ausschaltposition. Dies ist in der Figur 1 durch einen gestrichelten Viertelkreis 24 angedeutet. Entsprechendes gilt für den in der Figur 1 in der Mitte angeordneten Kontaktarm 21. Auch dieser mittlere Kontaktarm 21 schwenkt in der Darstellung der Figur 1 von der Einschaltposition im Uhrzeigersinn nach rechts in die Ausschaltposition.The arranged in Figure 1 left on the support frame 13 contact arm 21 pivots in the illustration of Figure 1 from the closed position clockwise to the right in the off position. This is indicated in the figure 1 by a dashed quadrant 24. The same applies to the contact arm 21 arranged in the middle in FIG. 1. Also, this center contact arm 21 pivots in the illustration of FIG. 1 from the switch-on position clockwise to the right into the switch-off position.

Der in der Figur 1 rechts am Tragrahmen 13 angeordnete Kontaktarm 22 schwenkt jedoch in der Darstellung der Figur 1 von der Einschaltstellung im Gegenuhrzeigersinn nach links in die Ausschaltstellung. Dies ist in der Figur 1 durch einen gestrichelten Viertelkreis 25 angedeutet.However, arranged in the figure 1 right on the support frame 13 contact arm 22 pivots in the illustration of Figure 1 from the closed position in the counterclockwise direction to the left in the open position. This is indicated in the figure 1 by a dashed quadrant 25.

Von den drei Kontaktarmen 21 bzw. 22 schwenken also die beiden außen am Tragrahmen 13 bzw. an den beiden Enden des Tragrahmens 13 angeordneten Kontaktarme 21, 22 bei demselben Schaltübergang in einander entgegengesetzte Richtungen, und zwar jeweils in Richtung zu dem Tragrahmen 13 hin. Der mittlere Kontaktarm 21 kann optional in beide Richtungen schwenken.Of the three contact arms 21 and 22 thus pivot the two outside of the support frame 13 and at the two ends of the support frame 13 arranged contact arms 21, 22 at the same switching transition in opposite directions, respectively in the direction of the support frame 13 out. The middle contact arm 21 can optionally pivot in both directions.

Zur Ausführung der vorgenannten Schwenkbewegungen der Kontaktarme 21, bzw. 22 ist im Bereich des Tragrahmens 13 ein Gestänge 27 vorhanden, das von einem Antrieb 28 angetrieben werden kann. Mit Hilfe dieses Gestänges 27 können die drei Kontaktarme 21 bzw. 22 im wesentlichen gleichzeitig von dem Antrieb 28 von der Einschaltposition in die Ausschaltposition oder umgekehrt bewegt werden. Das Gestänge ist dabei derart ausgebildet, dass die beiden an den Enden des Tragrahmens 13 angeordneten Kontaktarme 21, 22 in einander entgegengesetzte Richtungen schwenken.To carry out the aforementioned pivoting movements of the contact arms 21, or 22, a linkage 27 is provided in the region of the support frame 13, which can be driven by a drive 28. With the aid of this linkage 27, the three contact arms 21 and 22 can be moved substantially simultaneously by the drive 28 from the on position to the off position or vice versa. The linkage is designed such that the two arranged at the ends of the support frame 13 contact arms 21, 22 pivot in opposite directions.

Durch das beschriebene einander entgegengesetzt Schwenken der beiden äußeren Kontaktarme 21, 22 wird erreicht, dass in keinem Zeitpunkt, insbesondere auch nicht in der Ausschaltposition der Kontaktarme 21 bzw. 22, irgend einer der Kontaktarme 21 bzw. 22 wesentlich von der Schaltanlage 10 absteht. Statt dessen sind sämtliche Kontaktarme 21 bzw. 22 auch in der Ausschaltposition im wesentlichen vor dem Tragrahmen 13 und damit im wesentlichen im Bereich der Schaltanlage 10 angeordnet.By the described opposite pivoting of the two outer contact arms 21, 22 is achieved that at any time, especially not in the off position of the contact arms 21 and 22, any of the contact arms 21 and 22 substantially protrudes from the switchgear 10. Instead, all the contact arms 21 and 22 are also arranged in the off position substantially in front of the support frame 13 and thus substantially in the area of the switchgear 10.

In der Figur 4 sind der Tragrahmen 13, die Kontaktarme 21, 22, das Gestänge 27 und der Antrieb 28 nochmals im Detail dargestellt.In the figure 4, the support frame 13, the contact arms 21, 22, the linkage 27 and the drive 28 are shown again in detail.

Der Antrieb 28 weist eine drehbare Antriebswelle 31 auf, die etwa in vertikaler Richtung ausgerichtet ist. Am freien Ende der Welle 31 ist ein Verbindungshebel 32 vorhanden, der in einer etwa horizontalen Ebene schwenkbar ist. Dieser Verbindungshebel 32 ist über eine Verbindungsstange 33 mit einem Hebel 34 gekoppelt, der dem mittleren Kontaktarm 21 zugeordnet ist, und der in einer etwa vertikalen Ebene schwenkbar ist. Dieser Hebel 34 ist über zwei Stangen 35, 36 mit zwei weiteren Hebeln 37, 38 gekoppelt, die den beiden äußeren Kontaktarmen 21, 22 zugeordnet sind, und die ebenfalls in einer etwa vertikalen Ebene schwenkbar sind. Die drei vorgenannten Hebel 34, 37, 38 sind über jeweils zugehörige Wellen 39 mit den Kontaktarmen 21, 22 verbunden. Die Wellen 39 sind dabei innerhalb des Tragrahmens 13 gelagert und etwa horizontal ausgerichtet.The drive 28 has a rotatable drive shaft 31 which is aligned approximately in the vertical direction. At the free end of the shaft 31, a connecting lever 32 is provided, which is pivotable in an approximately horizontal plane. This connecting lever 32 is coupled via a connecting rod 33 with a lever 34 which is associated with the central contact arm 21 and which is pivotable in an approximately vertical plane. This lever 34 is coupled via two rods 35, 36 with two further levers 37, 38, which are associated with the two outer contact arms 21, 22, and which are also pivotable in an approximately vertical plane. The three aforementioned levers 34, 37, 38 are connected via respective shafts 39 with the contact arms 21, 22. The shafts 39 are supported within the support frame 13 and aligned approximately horizontally.

Eine Drehbewegung 41 der Antriebswelle 31 im Uhrzeigersinn führt zu einer Schubbewegung 42 der Verbindungsstange 33 in der in der Figur 4 gezeigten Richtung. Die in einer etwa horizontalen Ebene erfolgende Schwenkbewegung des Verbindungshebels 32 wird dabei in eine Schwenkbewegung 43 des Hebels 34 in einer etwa vertikalen Ebene umgesetzt.A rotational movement 41 of the drive shaft 31 in a clockwise direction leads to a pushing movement 42 of the connecting rod 33 in the direction shown in FIG. The taking place in an approximately horizontal plane pivotal movement of the connecting lever 32 is thereby converted into a pivoting movement 43 of the lever 34 in an approximately vertical plane.

Über die Stangen 35, 36 wird diese Schwenkbewegung 43 auf die Hebel 37, 38 übertragen. Die beiden Stangen 37, 38 führen dabei Schubbewegungen 44, 45 aus, die einander entgegengesetzt sind, wie dies in der Figur 4 dargestellt ist. Dies hat zur Folge, dass die den beiden äußeren Kontaktarmen 21, 22 zugeordneten Wellen 39 einander entgegengesetzte Schwenkbewegungen ausführen. In der Figur 4 führt die auf der linken Seite angeordnete Welle 39 dieselbe Schwenkbewegung 43 wie die mittlere Welle im Gegenuhrzeigersinn aus, die auf der rechten Seite vorhandene Welle 39 jedoch eine entgegengesetzte Schwenkbewegung 46 im Uhrzeigersinn. Über die Wellen 39 werden die Schwenkbewegungen 43, 46 auf die jeweiligen Kontaktarme 21, 22 übertragen. Dies hat zur Folge, das die beiden äußeren Kontaktarme 21, 22 in einander entgegengesetzte Richtungen schwenken.About the rods 35, 36, this pivotal movement 43 is transmitted to the lever 37, 38. The two rods 37, 38 perform thrust movements 44, 45, which are opposite to each other, as shown in FIG. This has the consequence that the two outer contact arms 21, 22 associated shafts 39 perform opposite pivoting movements. In FIG. 4, the shaft 39 arranged on the left side carries out the same pivoting movement 43 as the central shaft in the counterclockwise direction, but the shaft 39 provided on the right side has an opposite pivoting movement 46 in the clockwise direction. About the shafts 39, the pivotal movements 43, 46 are transmitted to the respective contact arms 21, 22. This has the consequence that the two outer contact arms 21, 22 pivot in opposite directions.

Wird die Antriebswelle 31 im Gegenuhrzeigersinn gedreht, so hat dies entsprechend gegensinnige Bewegungen der erläuterten Bauteile zur Folge.If the drive shaft 31 is rotated in the counterclockwise direction, then this has correspondingly opposite movements of the illustrated components result.

Die Erdungsschalter 12 der Figuren 1 bis 4 können auch als sogenannte Schwenk-Schub-Erdungsschalter ausgebildet sein. Dies bedeutet, dass die Erdungsschalter zuerst in der beschriebenen Weise in eine etwa vertikale Richtung geschwenkt werden, um danach eine Schubbewegung etwa in dieser vertikalen Richtung auszuführen. Mit dieser Schubbewegung tauchen die Kontaktarme 21, 22 der Erdungsschalter 12 in ringförmige oder ähnlich ausgebildete Kontaktstücke ein, die von den Anschlüssen 16 abstehen. Auf diese Weise wird eine sichere elektrische Verbindung zwischen den Kontaktarmen 21, 22 und den Anschlüssen 16 erreicht, die auch bei den bei höheren Strömen auftretenden Kräften bestehen bleibt.The grounding switches 12 of Figures 1 to 4 may also be designed as a so-called pan-push earthing switch. This means that the earthing switches are first pivoted in the manner described in an approximately vertical direction, to thereafter a pushing movement approximately in to do this vertical direction. With this pushing movement, the contact arms 21, 22 of the earthing switch 12 dip into annular or similarly formed contact pieces which protrude from the terminals 16. In this way, a secure electrical connection between the contact arms 21, 22 and the terminals 16 is achieved, which remains even at the forces occurring at higher currents.

Weiterhin ist es möglich, dass auch die zweiten Anschlüsse 17 der Leistungsschalterpole 11 geerdet werden. Hierzu kann auf der Rückseite des Tragrahmens 13 ein weiteres Gestänge vorgesehen sein, das mit zusätzlichen Kontaktarmen gekoppelt ist. Diese Kontaktarme können dann in eine Einschaltposition geschwenkt werden, in der die zweiten Anschlüsse 17 separat und unabhängig von den ersten Anschlüssen 16 geerdet sind. Ebenfalls können die anhand der Figuren 1 bis 4 erläuterten Kontaktarme 21, 22 länger als dargestellt ausgebildet sein, so dass sie nicht nur die ersten Anschlüsse 16, sondern gleichzeitig auch die zweiten Anschlüsse 17 erden können. In beiden Fällen kann durch eine entsprechende Wahl des horizontalen Abstands und der vertikalen Höhe der Leistungsschalterpole 11 erreicht werden, dass der mittlere Kontaktarm 21 auch in der Ausschaltposition im wesentlichen vor dem Tragrahmen 13 und damit im wesentlichen im Bereich der Schaltanlage 10 angeordnet ist.Furthermore, it is possible that the second terminals 17 of the circuit breaker poles 11 are grounded. For this purpose, a further linkage can be provided on the back of the support frame 13, which is coupled with additional contact arms. These contact arms can then be pivoted to a switch-on position in which the second terminals 17 are grounded separately and independently of the first terminals 16. Likewise, the contact arms 21, 22 explained with reference to FIGS. 1 to 4 may be designed to be longer than illustrated so that they can ground not only the first terminals 16 but also the second terminals 17 at the same time. In both cases, can be achieved by an appropriate choice of the horizontal distance and the vertical height of the circuit breaker poles 11 that the central contact arm 21 in the off position substantially in front of the support frame 13 and so that is arranged substantially in the field of switchgear 10.

Weiterhin ist es möglich, dass eine mechanische Verriegelung zwischen den Leistungsschalterpolen 11 und den Erdungsschaltern 12 vorgesehen ist. Diese Verriegelung kann beispielsweise derart ausgebildet sein, dass die Erdungsschalter 12 nur dann in die Einschaltposition bewegt werden können, wenn die Leistungsschalterpole 11 elektrisch geöffnet sind, und/oder dass die Leistungsschalterpole 11 nur dann elektrisch geschlossen werden können, wenn die Erdungsschalter 12 sich in ihrer Ausschaltposition befinden.Furthermore, it is possible that a mechanical interlock between the circuit breaker poles 11 and the earthing switches 12 is provided. This interlock may be designed, for example, such that the grounding switches 12 can only be moved into the on position when the circuit breaker poles 11 are electrically opened, and / or that the circuit breaker poles 11 can only be electrically closed when the earthing switches 12 are in their position Switch off position.

Alternativ ist es möglich, dass der in den Figuren 1 bis 4 gezeigte gemeinsame Antrieb 28 für alle drei Erdungsschalter 12 durch drei separate Antriebe ersetzt ist, die den jeweiligen Erdungsschaltern 12 zugeordnet sind. Weiterhin wird darauf hingewiesen, dass auch die Leistungsschalterpole 11 mit einem Antrieb gekoppelt sind, der dem Tragrahmen 13 zugeordnet ist. Dabei kann es sich um einen gemeinsamen Antrieb für alle drei Leistungsschalterpole 12 oder um Einzelantriebe für die jeweiligen Leistungsschalterpole 12 handeln.Alternatively, it is possible for the common drive 28 shown in FIGS. 1 to 4 to be replaced for all three earthing switches 12 by three separate drives which are assigned to the respective grounding switches 12. It should also be noted that the circuit breaker poles 11 are also coupled to a drive which is assigned to the support frame 13. This can be a common drive for all three circuit breaker poles 12 or individual drives for the respective circuit breaker poles 12.

Claims (11)

Elektrische Schaltanlage (10) mit wenigstens zwei nebeneinander auf einem Tragrahmen (13) angeordneten Leistungsschalterpolen (11), und mit zwei über ein Gestänge (27) angetriebenen Erdungsschaltern (12), die den beiden Leistungsschalterpolen (11) zugeordnet und zu deren elektrischen Erdung vorgesehen sind, dadurch gekennzeichnet, dass jeder der Erdungsschalter (12) einen schwenkbaren Kontaktarm (21, 22) aufweist, dessen Schwenkachse (20) etwa lotrecht zur Hauptausdehnungsrichtung des Tragrahmens (13) ausgerichtet ist, und dass die beiden an den Enden des Tragrahmens (13) angeordneten Kontaktarme (21, 22) von dem Gestänge (27) in einander entgegengesetzte Richtungen in Richtung zu dem Tragrahmen (13) schwenkbar sind.Electrical switchgear (10) with at least two side by side on a support frame (13) arranged circuit breaker poles (11), and with two via a linkage (27) driven earthing switches (12) associated with the two circuit breaker poles (11) and provided for their electrical ground characterized in that each of the grounding switches (12) comprises a pivotable contact arm (21, 22) whose pivot axis (20) is oriented approximately perpendicular to the main extension direction of the support frame (13), and that the two at the ends of the support frame (13 ) arranged contact arms (21, 22) of the linkage (27) in opposite directions in the direction of the support frame (13) are pivotable. Schaltanlage (10) nach Anspruch 1, dadurch gekennzeichnet, dass die Schwenkachsen (20) der Kontaktarme (21, 22) im wesentlichen lotrecht zu einer von dem jeweils zugehörigen Leistungsschalterpol (11) gebildeten Achse ausgerichtet sind.Switchgear (10) according to claim 1, characterized in that the pivot axes (20) of the contact arms (21, 22) are aligned substantially perpendicular to one of the respective associated circuit breaker pole (11) axis. Schaltanlage (10) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Schwenkachsen (20) der Kontaktarme (21, 22) etwa horizontal ausgerichtet sind.Switchgear (10) according to claim 1 or 2, characterized in that the pivot axes (20) of the Contact arms (21, 22) are aligned approximately horizontally. Schaltanlage (10) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Kontaktarme (21, 22) in einer Einschaltstellung etwa vertikal angeordnet sind.Switchgear (10) according to one of claims 1 to 3, characterized in that the contact arms (21, 22) are arranged approximately vertically in a closed position. Schaltanlage (10) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Kontaktarme (21, 22) in einer Ausschaltstellung etwa horizontal angeordnet sind.Switchgear (10) according to one of claims 1 to 4, characterized in that the contact arms (21, 22) are arranged approximately horizontally in an open position. Schaltanlage (10) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Kontaktarme (21, 22) in einer Ausschaltstellung im wesentlichen vor dem Tragrahmen (13) angeordnet sind.Switchgear (10) according to one of claims 1 to 5, characterized in that the contact arms (21, 22) are arranged in an off position substantially in front of the support frame (13). Schaltanlage (10) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Erdungsschalter (12) als Schwenk-Schub-Erdungsschalter ausgebildet sind.Switchgear (10) according to one of claims 1 to 6, characterized in that the earthing switches (12) are designed as a pan-push earthing switch. Schaltanlage (10) nach einem der Ansprüche 1 bis 7, wobei jeder der Leistungsschalterpole (11) zwei Anschlüsse (16, 17) aufweist, dadurch gekennzeichnet, dass jedem der Anschlüsse (16, 17) ein separater Kontaktarm zur Erdung zugeordnet ist.Switchgear (10) according to one of claims 1 to 7, wherein each of the circuit breaker poles (11) has two terminals (16, 17), characterized in that each of the terminals (16, 17) is assigned a separate contact arm for grounding. Schaltanlage (10) nach einem der Ansprüche 1 bis 7, wobei jeder der Leistungsschalterpole (11) zwei Anschlüsse (16, 17) aufweist, dadurch gekennzeichnet, dass den beiden Anschlüssen (16, 17) derselbe Kontaktarm zur Erdung zugeordnet ist.Switchgear (10) according to one of claims 1 to 7, wherein each of the circuit breaker poles (11) has two terminals (16, 17), characterized in that the two terminals (16, 17) are assigned the same contact arm for grounding. Schaltanlage (10) nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Leistungsschalterpole (11) und die Erdungsschalter (12) zueinander verriegelt sind.Switchgear (10) according to one of claims 1 to 9, characterized in that the circuit breaker poles (11) and the earthing switches (12) are locked to each other. Schaltanlage (10) nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Erdungsschalter (12) flexible Erdseile und/oder Gleitkontakte zur Erdung aufweisen.Switchgear (10) according to one of claims 1 to 10, characterized in that the grounding switch (12) have flexible earth cables and / or sliding contacts for grounding.
EP06021102A 2005-11-15 2006-10-07 Electrical switchgear Active EP1786010B1 (en)

Applications Claiming Priority (1)

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DE200510054842 DE102005054842B4 (en) 2005-11-15 2005-11-15 Electrical switchgear

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EP2858227A1 (en) * 2013-10-04 2015-04-08 ABB Technology AG Parallel modular multilevel converters
WO2015028665A3 (en) * 2013-08-30 2015-08-20 Abb Technology Ag Parallel modular multilevel converters and protection system
CN106683919A (en) * 2016-12-30 2017-05-17 平高集团有限公司 Operating mechanism and switching apparatus using same

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CN104143767B (en) * 2013-10-31 2016-10-19 国家电网公司 Switchgear
EP3089186B1 (en) 2015-04-30 2019-09-11 General Electric Technology GmbH Electrical switchgear and method of operating an electrical switchgear
CN106783289B (en) * 2016-12-30 2018-11-02 平高集团有限公司 A kind of switching device

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JPH0674012U (en) 1993-03-17 1994-10-18 株式会社明電舎 Gas insulated switchgear
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CH480725A (en) 1968-03-29 1969-10-31 Bbc Brown Boveri & Cie Pressure gas line switch of the boiler design
DE2351492A1 (en) 1973-10-13 1975-04-24 Ruhrtal Gmbh Earthing switch for HV networks has earthing tube - is driven axially by shaft via linkage lever mechanism against fixed contact
DE2545938A1 (en) * 1975-10-14 1977-05-05 Ruhrtal Gmbh HV switchgear earthing switch - has pivoting conducting tube allowed to execute sliding motion by linkage unlocking after pivoting
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CN106683919A (en) * 2016-12-30 2017-05-17 平高集团有限公司 Operating mechanism and switching apparatus using same

Also Published As

Publication number Publication date
DK1786010T3 (en) 2011-07-11
DE102005054842A1 (en) 2007-05-16
NO331050B1 (en) 2011-09-19
CN1971793B (en) 2013-09-18
WO2007057164A1 (en) 2007-05-24
CN1971793A (en) 2007-05-30
DE502006009383D1 (en) 2011-06-09
DE202005020524U1 (en) 2006-03-16
DE102005054842B4 (en) 2014-09-18
NO20064583L (en) 2007-05-16
EP1786010B1 (en) 2011-04-27

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