EP2845213B1 - Three-position load isolating switch for medium-voltage switchgear assemblies - Google Patents

Three-position load isolating switch for medium-voltage switchgear assemblies Download PDF

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Publication number
EP2845213B1
EP2845213B1 EP13726788.6A EP13726788A EP2845213B1 EP 2845213 B1 EP2845213 B1 EP 2845213B1 EP 13726788 A EP13726788 A EP 13726788A EP 2845213 B1 EP2845213 B1 EP 2845213B1
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EP
European Patent Office
Prior art keywords
contact
moving contact
rotatable moving
fixed
rotatable
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Active
Application number
EP13726788.6A
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German (de)
French (fr)
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EP2845213A1 (en
Inventor
Stefan Hohmann
Daniel Pesch
Stefan Wolf
Rene Zlydnik
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Siemens AG
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Siemens AG
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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
    • 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
    • H01H33/04—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
    • H01H33/127—Load break switches comprising a separate circuit breaker movable with a sectionalising contact arm and operated by such movement
    • 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
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric

Definitions

  • the invention relates to a three-position circuit breaker for medium-voltage switchgear with a main contact system, formed of a first fixed contact and a second fixed contact, which are diametrically opposed, and a rotatable by means of a centrally between the first fixed contact and the second fixed contact rotary support movable contact forming a main current path in a first position of the moving contact, forming a separation distance in a second position of the rotatable moving contact and forming a grounding position with a grounding contact system in a third position of the rotatable moving contact, and a Crowstrompfad formed from the first fixed contact, the second fixed contact, a quenching contact system and a first Sliding contact and a second sliding contact for forming a conductive connection with the rotatable moving contact in one between the first position and the second position En turning angle range of the rotatable moving contact such that upon initiation of a rotary motion in the rotatable moving contact commutation of an alternating current flowing
  • a switch disconnector for medium voltage switchgear is for example from DE 10 2004 006 476 A1 and comprises a main contact system and a shunt branch, in which shunt branch an erase contact arrangement for extinguishing an arc and a disconnect contact arrangement for providing a dielectric strength are provided.
  • a three-position circuit breaker of the type mentioned is from the EP 0693763 B1 known.
  • Object of the present invention is to form a three-position circuit breaker of the type mentioned, which is inexpensive to produce in a compact design.
  • the means comprise a cam for actuating a rocker coupled to a moving contact connecting bolt of the vacuum interrupter by means of a guide element and the means further comprise a folding mechanism such that when the three-position load disconnecting switch is switched on, the third or second position of the rotatable movement contact in its first position the extinguishing contact system is interrupted.
  • Such a three-position circuit breaker on the one hand has a compact design, because by the diametrical arrangement of the first fixed contact and second fixed contact to each other and the interposed rotatable moving contact an arrangement of main flow path and Maustrompfad in a small space next to each other is made possible by the rotational movement of a commutation of the Switching device guided alternating current from the main current path to the secondary current path is made possible.
  • such a switching device has a cost-effective design, because by the arranged in the secondary current path extinguishing contact system both this and the first and second sliding contacts and other connecting means to the first and the second fixed contact of inexpensive material, such as steel or stainless steel or aluminum or the like , can be produced because a current is only briefly conducted during a switching operation via the secondary current path until, after arc quenching in the extinguishing contact system, a transfer to the disconnected position of the three-position circuit breaker takes place, so that the requirements on the material properties of the secondary flow path are lower than the requirements for the material properties of the main flow path.
  • the structure with cam is mechanically simple and thus compact and inexpensive, since with this structure only work against the low spring force of the contact pressure spring of the extinguishing contact system is to perform and by the folding mechanism is ensured in an advantageous manner that a switch-on of the switching device by initiating the rotational movement in the opposite direction and transfer of the rotatable moving contact from the third or the second position to the first position of the switching is carried out without electrical interference over the Maustrompfad and in particular without involvement of the vacuum interrupter of the extinguishing contact system, so that the vacuum interrupter no requirements regarding Einschaltfestmaschine or the like be set because a Einschaltschreibfugus is ignited during the switching between the rotatable moving contact and the first and second fixed contacts, which in particular in the arrangement of the Dreigginchentrennschalter in a filled with an insulating medium, such as an insulating gas or insulating liquid housing represents a simple, in contrast to the switching in the vacuum interrupter cost-effective way to perform a switch-on.
  • the vacuum interrupter on a closable by means of a contact pressure spring contact system is held by the contact pressure spring in its closed state, as long as the means of the rotatable moving contact to interrupt the extinguishing contact system does not attack this, so that only a small spring force is necessary because of the arrangement of the extinguishing contact system in the secondary flow path, in particular for the contact pressure spring No short-circuit current is supplied, switched on or off via the secondary current path.
  • the grounding contact system is formed by a ground contact, the second sliding contact as a ground counter contact and the rotatable movement contact.
  • a three-position circuit breaker is formed with the positions ON, OFF and EARTH in a simple and compact manner.
  • FIG. 1 shows a three-position circuit breaker 1 for use in medium-voltage switchgear, which are not shown in detail figuratively, the three-position circuit breaker 1 is connected to a first fixed contact 2 with a busbar connection of the switchgear and a second fixed contact 3 with a cable outlet of the medium voltage switchgear is connectable.
  • the moving contact 4 is designed as a pair of knives and comprises a first pair of knife ends 5 and a second pair of knife ends 6 and a figuratively not shown further conductive connection between the first pair of knife ends 5 and second pair of knife 6 and is located in the FIG. 1 in a first Position in which the first pair of knife ends 5 forms a conductive connection with the first fixed contact 2 and the second pair of knife ends 6 with the second fixed contact 3 forms a conductive connection, so that a current flow through the three-position circuit breaker 1 and over the main current path is possible.
  • the rotatable moving contact 4 is attached to a rotary support 7, in which rotary support 7, a drive movement of a figuratively also not shown drive for rotating the rotary support 7, and thus rotation of the rotatable moving contact 4 is possible.
  • an erase contact system 9 is electrically connected by means of a conductive connection 8, which extinguishing contact system 9 is formed by a vacuum interrupter 10 with moving contact 11 and fixed contact 12, wherein the extinguishing contact system 9 in the FIG. 1 is in the closed state by a contact pressure spring 13 on a moving contact terminal pin 14 exerts a compressive force to hold in the closed position of the extinguishing contact system 9.
  • the moving contact 11 of the extinguishing contact system 9 is in turn conductively connected to a first sliding contact 15.
  • a second sliding contact 16 by means of a further conductive connecting element 17 to the second fixed contact 3 electrically conductively connected, so that after initiating a rotary movement in the rotary support 7 and rotation of the rotatable moving contact 4 in a contact position in which the first knife pair end 5 and the second knife pair end 6 of the rotatable Moving contact 4 with the first sliding contact 15 and the second sliding contact 16 is in conductive connection, a Crowstrompfad on the first fixed contact 2, the conductive connection 8, the closed erase contact system 9, the first sliding contact 15, the rotatable moving contact 4, the second Slip contact 16, the conductive connecting member 17 and the second fixed contact 3 is formed, as with respect to the FIG.
  • the first sliding contact 15 and the second sliding contact 16 may be formed of steel, for example.
  • the cam track 19 in this case has a first portion 19 ', whose course is provided for opening the extinguishing contact system 9, and a second portion 19 "with a maximum radius, is ensured by the holding open the extinguishing contact system via the guide pin 22.
  • a ground contact 24 of a ground contact system is provided for forming a ground position of the three-position circuit breaker 1, which will be described later.
  • a folding mechanism 25 is arranged, which has a rotary lever 26 and a spring lever 27 and a spring 28, and which is provided so that when a switch-on of the three-position circuit breaker 1, the erase contact system 9 remains in its open state, while the rotatable moving contact 4 is transferred from the grounding position or the switch-off position back into the first position by introducing an opposite rotational movement by virtue of the curved track 19 retaining its maximum radius by the folding mechanism, as explained in greater detail below.
  • the three-position switch-disconnector 1 is included arranged in a housing 29 which can be filled with an insulating gas or an insulating liquid and by means of fastening elements, of which only one example is denoted by 30, can be fastened and mounted on the medium-voltage switchgear.
  • the three-position switch-disconnector 1 is in the FIG. 1 In its first position with trained main current path via the first fixed contact 2, the rotatable moving contact 4 and the second fixed contact 3.
  • the cam 18 engages with its curved path 19 on the rocker 20 so that is caused by rotation of the rocker 20 about the pivot point 21 via the guide member 23 of the moving contact terminal pin 14 of the extinguishing contact system 9 to a movement, which against the spring force of the contact pressure spring 13 can be introduced and leads to the opening of the extinguishing contact system 9, so that an arc in the extinguishing contact system 9 of the vacuum interrupter 10 is ignited in the secondary flow path, which at a current zero crossing of the guided via the switching device AC is deleted.
  • a switch-on of the three-position circuit breaker 1 is done by initiating a rotational movement in the opposite direction to the rotational movement of the switching of the in the disconnected position or the grounding position three-position circuit breaker 1, as in FIG. 3 represented, and rotation of the rotatable moving contact 4 back to the position of FIG. 1 until the first pair of knife ends 5 comes into conductive connection with the first fixed contact 2 and the second pair of knife ends 6 with the second fixed contact 3.
  • the vacuum interrupter 10 of the extinguishing contact system 9 makes it possible to cost-effectively carry out the vacuum interrupter 10 of the extinguishing contact system 9, since this is not involved in the switch-on and thus no special requirements for the switch-on of the vacuum interrupter 10 must be made.
  • the arrangement of the secondary flow path can be formed by low-cost materials such as steel, stainless steel or aluminum, because on the secondary flow path only briefly briefly a current is performed and in particular no short-circuit current occurs in the secondary flow path.
  • FIG. 4 shows a three-phase switching device 1, wherein each phase 31, 32 or 33 according to the embodiment of FIGS. 1 to 6 is formed, of which the housing 29 are visible and wherein the individual phases 31, 32 and 33 are interconnected via connecting elements 34, so that a simultaneous actuation of all phases by initiating a rotational movement of a drive not shown in the rotary support 7 is made possible.
  • the grounding contacts 24 of the phases 31, 32 and 33 are connected to each other via a ground rail 35, which in turn is grounded.
  • a frame 36 is as a holder of the three-position load break switch 1 and for arranging busbar terminals 37, 38 and 39th and provided by cable outlet terminals 40, 41 and 42 of the switchgear.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Description

Die Erfindung betrifft einen Dreistellungslasttrennschalter für Mittelspannungs-Schaltanlagen mit einem Hauptkontaktsystem, gebildet aus einem ersten Festkontakt und einem zweiten Festkontakt, welche sich diametral gegenüberstehen, und einem mittels einem mittig zwischen dem ersten Festkontakt und dem zweiten Festkontakt angeordneten Drehstützer drehbaren Bewegkontakt unter Ausbildung eines Hauptstrompfades in einer ersten Position des Bewegkontaktes, Ausbildung einer Trennstrecke in einer zweiten Position des drehbaren Bewegkontaktes und Ausbildung einer Erdungsstellung mit einem Erdungskontaktsystem in einer dritten Position des drehbaren Bewegungskontaktes, sowie einem Nebenstrompfad, gebildet aus dem ersten Festkontakt, dem zweiten Festkontakt, einem Löschkontaktsystem sowie einem ersten Schleifkontakt und einem zweiten Schleifkontakt zum Ausbilden einer leitenden Verbindung mit dem drehbaren Bewegkontakt in einem zwischen der ersten Position und der zweiten Position befindlichen Drehwinkelbereich des drehbaren Bewegkontaktes derart, dass beim Einleiten einer Drehbewegung in den drehbaren Bewegkontakt eine Kommutierung eines über das Schaltgerät fließenden Wechselstromes vom Hauptstrompfad auf den Nebenstrompfad ermöglicht ist, wobei der drehbare Bewegkontakt Mittel zum Unterbrechen des Löschkontaktsystems aufweist, und bei gelöschtem Lichtbogen und Einleiten weiterer Drehbewegung ein Ausbilden der Trennstrecke ermöglicht ist, wobei das Löschkontaktsystem eine Vakuumschaltröhre umfasst.The invention relates to a three-position circuit breaker for medium-voltage switchgear with a main contact system, formed of a first fixed contact and a second fixed contact, which are diametrically opposed, and a rotatable by means of a centrally between the first fixed contact and the second fixed contact rotary support movable contact forming a main current path in a first position of the moving contact, forming a separation distance in a second position of the rotatable moving contact and forming a grounding position with a grounding contact system in a third position of the rotatable moving contact, and a Nebenstrompfad formed from the first fixed contact, the second fixed contact, a quenching contact system and a first Sliding contact and a second sliding contact for forming a conductive connection with the rotatable moving contact in one between the first position and the second position En turning angle range of the rotatable moving contact such that upon initiation of a rotary motion in the rotatable moving contact commutation of an alternating current flowing through the switching device from the main current path is made possible on the Nebenstrompfad, wherein the rotatable moving contact means for interrupting the extinguishing contact system, and with extinguished arc and initiate another Rotary movement is a forming the separation distance is possible, wherein the extinguishing contact system comprises a vacuum interrupter.

Ein Lasttrennschalter für Mittelspannungs-Schaltanlagen ist beispielsweise aus der DE 10 2004 006 476 A1 bekannt und umfasst ein Hauptkontaktsystem sowie einen Nebenschlusszweig, in welchem Nebenschlusszweig eine Löschkontaktanordnung zum Löschen eines Lichtbogens sowie eine Trennkontaktanordnung zum Bereitstellen einer Spannungsfestigkeit vorgesehen sind.A switch disconnector for medium voltage switchgear is for example from DE 10 2004 006 476 A1 and comprises a main contact system and a shunt branch, in which shunt branch an erase contact arrangement for extinguishing an arc and a disconnect contact arrangement for providing a dielectric strength are provided.

Ein Dreistellungslasttrennschalter der eingangs genannten Art ist aus der EP 0693763 B1 bekannt.A three-position circuit breaker of the type mentioned is from the EP 0693763 B1 known.

Aufgabe der vorliegenden Erfindung ist es, einen Dreistellungslasttrennschalter der eingangs genannten Art auszubilden, welches bei einem kompakten Aufbau kostengünstig herstellbar ist.Object of the present invention is to form a three-position circuit breaker of the type mentioned, which is inexpensive to produce in a compact design.

Erfindungsgemäß gelöst wird dies dadurch, dass die Mittel eine Kurvenscheibe zur Betätigung einer mittels eines Führungselementes mit einem Bewegkontakt-Anschlussbolzen der Vakuumschaltröhre gekoppelten Wippe umfassen und die Mittel weiterhin einen Klappmechanismus derart aufweisen, dass bei einem Einschaltvorgang des Dreistellungslasttrennschalters aus der dritten oder der zweiten Position des drehbaren Bewegungskontaktes in seine erste Position das Löschkontaktsystem unterbrochen ist.This is achieved according to the invention in that the means comprise a cam for actuating a rocker coupled to a moving contact connecting bolt of the vacuum interrupter by means of a guide element and the means further comprise a folding mechanism such that when the three-position load disconnecting switch is switched on, the third or second position of the rotatable movement contact in its first position the extinguishing contact system is interrupted.

Ein derartiger Dreistellungslasttrennschalter weist einerseits einen kompakten Aufbau auf, weil durch die diametrale Anordnung von erstem Festkontakt und zweitem Festkontakt zueinander sowie dem dazwischen angeordneten drehbaren Bewegkontakt eine Anordnung von Hauptstrompfad und Nebenstrompfad auf kleinem Bauraum nebeneinander ermöglicht ist, indem bei der Drehbewegung eine Kommutierung des über das Schaltgerät geführten Wechselstromes vom Hauptstrompfad auf den Nebenstrompfad ermöglicht ist. Andererseits weist ein derartiges Schaltgerät einen kostengünstigen Aufbau auf, weil durch das im Nebenstrompfad angeordnete Löschkontaktsystem sowohl dieses als auch die ersten und zweiten Schleifkontakte sowie weitere Verbindungsmittel zu dem ersten bzw. dem zweiten Festkontakt aus kostengünstigem Material, wie beispielsweise Stahl oder Edelstahl oder Aluminium oder dergleichen, herstellbar sind, weil über den Nebenstrompfad lediglich kurzzeitig bei einem Schaltvorgang ein Strom geführt wird, bis nach Lichtbogenlöschung im Löschkontaktsystem ein Überführen in die Trennstellung des Dreistellungslasttrennschalters geschieht, so dass die Anforderungen an die Materialeigenschaften des Nebenstrompfades geringer sind als die Anforderungen an die Materialeigenschaften des Hauptstrompfades. Der Aufbau mit Kurvenscheibe ist dabei mechanisch einfach und damit kompakt und kostengünstig, da mit diesem Aufbau lediglich Arbeit gegen die geringe Federkraft der Kontaktdruckfeder des Löschkontaktsystems zu verrichten ist und durch den Klappmechanismus ist in vorteilhafter Weise gewährleistet, dass ein Einschaltvorgang des Schaltgerätes durch Einleiten der Drehbewegung in die entgegengesetzte Richtung und Überführung des drehbaren Bewegkontaktes aus der dritten oder der zweiten Position in die erste Position der Einschaltvorgang ohne elektrische Beeinflussung über den Nebenstrompfad und insbesondere ohne Beteiligung der Vakuumschaltröhre des Löschkontaktsystems ausgeführt wird, so dass an die Vakuumschaltröhre keine Anforderungen bezüglich Einschaltfestigkeit oder dergleichen gestellt werden, weil ein Einschaltlichtbogen beim Einschaltvorgang zwischen dem drehbaren Bewegkontakt und den ersten bzw. zweiten Festkontakten gezündet wird, was insbesondere bei Anordnung des Dreistellungslasttrennschalters in einem mit einem Isoliermedium, beispielsweise einem Isoliergas oder einer Isolierflüssigkeit gefüllten Gehäuse eine einfache, im Gegensatz zur Einschaltung in der Vakuumschaltröhre kostengünstigere Möglichkeit zur Ausführung eines Einschaltvorganges darstellt.Such a three-position circuit breaker on the one hand has a compact design, because by the diametrical arrangement of the first fixed contact and second fixed contact to each other and the interposed rotatable moving contact an arrangement of main flow path and Nebenstrompfad in a small space next to each other is made possible by the rotational movement of a commutation of the Switching device guided alternating current from the main current path to the secondary current path is made possible. On the other hand, such a switching device has a cost-effective design, because by the arranged in the secondary current path extinguishing contact system both this and the first and second sliding contacts and other connecting means to the first and the second fixed contact of inexpensive material, such as steel or stainless steel or aluminum or the like , can be produced because a current is only briefly conducted during a switching operation via the secondary current path until, after arc quenching in the extinguishing contact system, a transfer to the disconnected position of the three-position circuit breaker takes place, so that the requirements on the material properties of the secondary flow path are lower than the requirements for the material properties of the main flow path. The structure with cam is mechanically simple and thus compact and inexpensive, since with this structure only work against the low spring force of the contact pressure spring of the extinguishing contact system is to perform and by the folding mechanism is ensured in an advantageous manner that a switch-on of the switching device by initiating the rotational movement in the opposite direction and transfer of the rotatable moving contact from the third or the second position to the first position of the switching is carried out without electrical interference over the Nebenstrompfad and in particular without involvement of the vacuum interrupter of the extinguishing contact system, so that the vacuum interrupter no requirements regarding Einschaltfestigkeit or the like be set because a Einschaltlichtbogen is ignited during the switching between the rotatable moving contact and the first and second fixed contacts, which in particular in the arrangement of the Dreistellungslastentrennschalter in a filled with an insulating medium, such as an insulating gas or insulating liquid housing represents a simple, in contrast to the switching in the vacuum interrupter cost-effective way to perform a switch-on.

In einer vorteilhaften Ausgestaltung der Erfindung weist die Vakuumschaltröhre ein mittels einer Kontaktdruckfeder schließbares Kontaktsystem auf. Das Kontaktsystem der Vakuumschaltröhre ist durch die Kontaktdruckfeder in seinem geschlossenen Zustand gehalten, solange die Mittel des drehbaren Bewegkontaktes zum Unterbrechen des Löschkontaktsystems nicht an diesem angreifen, so dass durch die Anordnung des Löschkontaktsystems im Nebenstrompfad insbesondere für die Kontaktdruckfeder nur eine geringe Federkraft notwendig ist, da über den Nebenstrompfad kein Kurzschlussstrom geführt, ein- oder ausgeschaltet wird.In an advantageous embodiment of the invention, the vacuum interrupter on a closable by means of a contact pressure spring contact system. The contact system of the vacuum interrupter is held by the contact pressure spring in its closed state, as long as the means of the rotatable moving contact to interrupt the extinguishing contact system does not attack this, so that only a small spring force is necessary because of the arrangement of the extinguishing contact system in the secondary flow path, in particular for the contact pressure spring No short-circuit current is supplied, switched on or off via the secondary current path.

In einer vorteilhaften Ausgestaltung der Erfindung ist das Erdungskontaktsystem durch einen Erdungskontakt, den zweiten Schleifkontakt als Erdungsgegenkontakt sowie den drehbaren Bewegungskontakt gebildet. Dadurch ist in einfacher und kompakter Weise ein Dreistellungslasttrennschalter mit den Stellungen EIN, AUS und ERDE gebildet.In an advantageous embodiment of the invention, the grounding contact system is formed by a ground contact, the second sliding contact as a ground counter contact and the rotatable movement contact. As a result, a three-position circuit breaker is formed with the positions ON, OFF and EARTH in a simple and compact manner.

Die Erfindung wird im Folgenden anhand der Zeichnung und eines Ausführungsbeispiels mit Bezug auf die beiliegenden Figuren näher erläutert. Es zeigen:

Figur 1:
ein Ausführungsbeispiel eines erfindungsgemäßen Schaltgerätes in einer ersten Position;
Figuren 2 und 3:
das Schaltgerät der Figur 1 in einer Trennstellung bzw. einer Erdungsstellung;
Figur 4:
eine Ansicht eines Ausführungsbeispiels eines dreiphasigen Schaltgerätes gemäß dem Schaltgerät der Figur 1.
The invention will be explained in more detail below with reference to the drawing and an embodiment with reference to the accompanying figures. Show it:
FIG. 1:
an embodiment of a switching device according to the invention in a first position;
FIGS. 2 and 3:
the switching device of FIG. 1 in a disconnected position or a grounding position;
FIG. 4:
a view of an embodiment of a three-phase switching device according to the switching device of FIG. 1 ,

Figur 1 zeigt einen Dreistellungslasttrennschalter 1 zur Anwendung in Mittelspannungs-Schaltanlagen, welche figürlich nicht näher dargestellt sind, wobei der Dreistellungslasttrennschalter 1 mit einem ersten Festkontakt 2 mit einem Sammelschienenanschluss der Schaltanlage verbindbar ist und mit einem zweiten Festkontakt 3 mit einem Kabelabgang der Mittelspannungs-Schaltanlage verbindbar ist. Der erste Festkontakt 2 und der zweite Festkontakt 3, welche vorzugsweise aus Kupfer als Material ausgebildet sind, bilden gemeinsam mit einem drehbaren Bewegkontakt 4 ein Hauptkontaktsystem und einen Hauptstrompfad des Dreistellungslasttrennschalters 1 aus. Der Bewegkontakt 4 ist als Messerpaar ausgebildet und umfasst ein erstes Messerpaarende 5 sowie ein zweites Messerpaarende 6 und eine figürlich nicht dargestellte weitere leitende Verbindung zwischen erstem Messerpaarende 5 und zweitem Messerpaarende 6 und befindet sich in der Figur 1 in einer ersten Position, in welcher das erste Messerpaarende 5 mit dem ersten Festkontakt 2 eine leitende Verbindung ausbildet und das zweite Messerpaarende 6 mit dem zweiten Festkontakt 3 eine leitende Verbindung ausbildet, so dass ein Stromfluss über den Dreistellungslasttrennschalter 1 bzw. über den Hauptstrompfad ermöglicht ist. Der drehbare Bewegkontakt 4 ist dabei an einem Drehstützer 7 befestigt, in welchen Drehstützer 7 eine Antriebsbewegung eines figürlich ebenfalls nicht dargestellten Antriebes zur Drehung des Drehstützers 7, und damit Drehung des drehbaren Bewegkontaktes 4 ermöglicht ist. Am ersten Festkontakt 2 ist mittels einer leitenden Verbindung 8 ein Löschkontaktsystem 9 elektrisch leitend angeschlossen, welches Löschkontaktsystem 9 durch eine Vakuumschaltröhre 10 mit Bewegkontakt 11 und Festkontakt 12 gebildet ist, wobei das Löschkontaktsystem 9 in der Figur 1 sich im geschlossenen Zustand befindet, indem eine Kontaktdruckfeder 13 auf einen Bewegkontakt-Anschlussbolzen 14 eine Druckkraft ausübt zum Halten in der geschlossenen Stellung des Löschkontaktsystems 9. Der Bewegkontakt 11 des Löschkontaktsystems 9 ist wiederum leitend verbunden mit einem ersten Schleifkontakt 15. Ein zweiter Schleifkontakt 16 ist mittels eines weiteren leitenden Verbindungselementes 17 mit dem zweiten Festkontakt 3 elektrisch leitend verbunden, so dass nach Einleiten einer Drehbewegung in den Drehstützer 7 und Drehung des drehbaren Bewegkontaktes 4 in eine Kontaktstellung, in welcher sich das erste Messerpaarende 5 bzw. das zweite Messerpaarende 6 des drehbaren Bewegkontaktes 4 mit dem ersten Schleifkontakt 15 bzw. dem zweiten Schleifkontakt 16 in leitender Verbindung befindet, ein Nebenstrompfad über den ersten Festkontakt 2, die leitende Verbindung 8, das geschlossene Löschkontaktsystem 9, den ersten Schleifkontakt 15, den drehbaren Bewegkontakt 4, den zweiten Schleifkontakt 16, das leitende Verbindungselement 17 und den zweiten Festkontakt 3 gebildet ist, wie mit Bezug auf die Figur 2 weiter unten näher erläutert. Der erste Schleifkontakt 15 und der zweite Schleifkontakt 16 können beispielsweise aus Stahl gebildet sein. Am drehbaren Bewegkontakt 4 weiterhin vorgesehen ist eine Kurvenscheibe 18, welche eine Kurvenbahn 19 aufweist, durch die bei einer Drehbewegung des drehbaren Bewegkontaktes 4 eine Wippe 20 betätigbar ist, welche Wippe 20 an einem Drehpunkt 21 drehbar gelagert und mittels eines Führungsbolzens 22 in ihrer Bewegung entlang der Kurvenbahn geführt ist, wobei ein Führungselement 23 vorgesehen ist, durch welches die Wippe 20 den Bewegkontakt-Anschlussbolzen 14 des Löschkontaktsystems 9 bewegt und das Löschkontaktsystem 9 öffnet. Die Kurvenbahn 19 weist dabei einen ersten Abschnitt 19', dessen Verlauf zum Öffnen des Löschkontaktsystems 9 vorgesehen ist, sowie einen zweiten Abschnitt 19" mit einem maximalen Radius auf, durch den ein Offenhalten des Löschkontaktsystems über den Führungsbolzen 22 gewährleistet ist. FIG. 1 shows a three-position circuit breaker 1 for use in medium-voltage switchgear, which are not shown in detail figuratively, the three-position circuit breaker 1 is connected to a first fixed contact 2 with a busbar connection of the switchgear and a second fixed contact 3 with a cable outlet of the medium voltage switchgear is connectable. The first fixed contact 2 and the second fixed contact 3, which are preferably formed of copper as a material, together with a rotatable moving contact 4 form a main contact system and a main current path of the three-position circuit breaker 1. The moving contact 4 is designed as a pair of knives and comprises a first pair of knife ends 5 and a second pair of knife ends 6 and a figuratively not shown further conductive connection between the first pair of knife ends 5 and second pair of knife 6 and is located in the FIG. 1 in a first Position in which the first pair of knife ends 5 forms a conductive connection with the first fixed contact 2 and the second pair of knife ends 6 with the second fixed contact 3 forms a conductive connection, so that a current flow through the three-position circuit breaker 1 and over the main current path is possible. The rotatable moving contact 4 is attached to a rotary support 7, in which rotary support 7, a drive movement of a figuratively also not shown drive for rotating the rotary support 7, and thus rotation of the rotatable moving contact 4 is possible. On the first fixed contact 2, an erase contact system 9 is electrically connected by means of a conductive connection 8, which extinguishing contact system 9 is formed by a vacuum interrupter 10 with moving contact 11 and fixed contact 12, wherein the extinguishing contact system 9 in the FIG. 1 is in the closed state by a contact pressure spring 13 on a moving contact terminal pin 14 exerts a compressive force to hold in the closed position of the extinguishing contact system 9. The moving contact 11 of the extinguishing contact system 9 is in turn conductively connected to a first sliding contact 15. A second sliding contact 16 by means of a further conductive connecting element 17 to the second fixed contact 3 electrically conductively connected, so that after initiating a rotary movement in the rotary support 7 and rotation of the rotatable moving contact 4 in a contact position in which the first knife pair end 5 and the second knife pair end 6 of the rotatable Moving contact 4 with the first sliding contact 15 and the second sliding contact 16 is in conductive connection, a Nebenstrompfad on the first fixed contact 2, the conductive connection 8, the closed erase contact system 9, the first sliding contact 15, the rotatable moving contact 4, the second Slip contact 16, the conductive connecting member 17 and the second fixed contact 3 is formed, as with respect to the FIG. 2 explained in more detail below. The first sliding contact 15 and the second sliding contact 16 may be formed of steel, for example. On the rotatable moving contact 4 is still provided a cam 18, which has a cam track 19 through which in a Rotary movement of the rotatable moving contact 4, a rocker 20 is actuated, which rocker 20 is rotatably mounted at a pivot point 21 and guided by a guide pin 22 in its movement along the curved path, wherein a guide member 23 is provided, through which the rocker 20, the moving contact terminal bolt 14 of the extinguishing contact system 9 moves and the extinguishing contact system 9 opens. The cam track 19 in this case has a first portion 19 ', whose course is provided for opening the extinguishing contact system 9, and a second portion 19 "with a maximum radius, is ensured by the holding open the extinguishing contact system via the guide pin 22.

Ein Erdungskontakt 24 eines Erdungskontaktsystems ist vorgesehen zum Ausbilden einer Erdungsstellung des Dreistellungslasttrennschalters 1, welche weiter unten näher erläutert wird. An der Kurvenscheibe 18 ist ein Klappmechanismus 25 angeordnet, der einen Drehhebel 26 und einen Federhebel 27 sowie eine Feder 28 aufweist, und der dazu vorgesehen ist, dass bei einem Einschaltvorgang des Dreistellungslasttrennschalters 1 das Löschkontaktsystem 9 in seinem geöffneten Zustand bleibt, während der drehbare Bewegkontakt 4 aus der Erdungsstellung oder der Ausschaltstellung in die erste Position zurück durch Einleiten einer entgegen gesetzten Drehbewegung überführt wird, indem die Kurvenbahn 19 durch den Klappmechanismus ihren maximalen Radius behält, wie weiter unten näher erläutert. Beim Ausschaltvorgang schwenkt der Federhebel 27, welcher am Drehhebel 26 drehbar gehalten ist, durch den Führungsbolzen 22 gezwungen aus seiner Position der Figur 1 weg, wird aber, sobald durch die Drehbewegung der Führungsbolzen 22 auf der Kurvenbahn den maximalen Radius derselben erreicht hat, durch die Feder 28 zurück in seine ursprüngliche Stellung überführt, so dass bei einem Einschaltvorgang und einer Drehbewegung zurück auch in den Bereich der Kurvenbahn 19 den maximalen Radius aufweist und das Löschkontaktsystem 9 durch den auf dem maximalen Radius geführten Führungsbolzen 22 in dem geöffneten Zustand gehalten ist. Der Dreistellungslasttrennschalter 1 ist dabei
in einem Gehäuse 29 angeordnet, welches mit einem Isoliergas oder einer Isolierflüssigkeit befüllbar ist und mittels Befestigungselementen, von denen lediglich eines beispielhaft mit 30 bezeichnet ist, an der Mittelspannungs-Schaltanlage befestigbar und montierbar ist.A ground contact 24 of a ground contact system is provided for forming a ground position of the three-position circuit breaker 1, which will be described later. On the cam 18, a folding mechanism 25 is arranged, which has a rotary lever 26 and a spring lever 27 and a spring 28, and which is provided so that when a switch-on of the three-position circuit breaker 1, the erase contact system 9 remains in its open state, while the rotatable moving contact 4 is transferred from the grounding position or the switch-off position back into the first position by introducing an opposite rotational movement by virtue of the curved track 19 retaining its maximum radius by the folding mechanism, as explained in greater detail below. When switching off the spring lever 27, which is rotatably supported on the rotary lever 26, pivoted by the guide pin 22 forced out of its position FIG. 1 away, but as soon as the maximum radius has reached the same by the rotational movement of the guide pin 22 on the curved path, transferred by the spring 28 back to its original position, so that in a switch-on and a rotational movement back into the area of the curved path 19 the maximum radius and the erase contact system 9 is held by the guided on the maximum radius guide pin 22 in the open state. The three-position switch-disconnector 1 is included
arranged in a housing 29 which can be filled with an insulating gas or an insulating liquid and by means of fastening elements, of which only one example is denoted by 30, can be fastened and mounted on the medium-voltage switchgear.

Die Funktion des Dreistellungslasttrennschalters 1 der Figur 1 wird im Folgenden anhand der Figuren 1 bis 3 näher erläutert. Wie bereits oben ausgeführt, befindet sich der Dreistellungslasttrennschalter 1 in der Figur 1 in seiner ersten Position mit ausgebildetem Hauptstrompfad über den ersten Festkontakt 2, den drehbaren Bewegkontakt 4 und dem zweiten Festkontakt 3. Beim Einleiten einer Antriebsbewegung in den Drehstützer 7 zum Ausführen eines Schaltvorganges und schlussendlich zum Ausbilden einer Trennstrecke zur dielektrischen Trennung wird zunächst eine figürlich nicht dargestellte Stellung erreicht, in welcher sich das erste Messerpaarende 5 sowohl mit dem ersten Festkontakt 2 als auch mit dem ersten Schleifkontakt 15 in leitender Verbindung befindet und das zweite Messerpaarende 6 sich mit dem zweiten Festkontakt 3 und dem zweiten Schleifkontakt 16 in elektrisch leitender Verbindung befindet, so dass zu diesem Zeitpunkt eine Kommutierung vom Hauptstrompfad auf den Nebenstrompfad bei geschlossenem Löschkontaktsystem 9 eingeleitet wird. Bei weiterer Drehbewegung befinden sich das erste Messerpaarende 5 bzw. das zweite Messerpaarende 6 dann nur noch in leitender Verbindung mit dem ersten Schleifkontakt 15 bzw. dem zweiten Schleifkontakt 16, so dass der Hauptstrompfad unterbrochen und die Kommutierung abgeschlossen ist. Dabei greift die Kurvenscheibe 18 mit ihrer Kurvenbahn 19 an der Wippe 20 an, so dass durch Drehung der Wippe 20 um den Drehpunkt 21 über das Führungselement 23 der Bewegkontakt-Anschlussbolzen 14 des Löschkontaktsystems 9 zu einer Bewegung veranlasst wird, welche gegen die Federkraft der Kontaktdruckfeder 13 einleitbar ist und zum Öffnen des Löschkontaktsystems 9 führt, so dass ein Lichtbogen im Löschkontaktsystem 9 der Vakuumschaltröhre 10 im Nebenstrompfad gezündet wird, welcher bei einem Stromnulldurchgang des über das Schaltgerät geführten Wechselstromes gelöscht wird. Bei weiterer Drehbewegung wird die Stellung der Figur 2 erreicht, in welcher sich der drehbare Bewegkontakt 4 in einer zweiten Position mit ausgebildeter Trennstellung und vollständig unterbrochenem Stromfluss befindet, wobei weiterhin die Kurvenscheibe 18 mit ihrer Kurvenbahn 19 immer noch an der Wippe 20 angreift und das Löschkontaktsystem 9 des Nebenstrompfades geöffnet bleibt, und zwischen den Messerpaarenden 5 bzw. 6 und den Festkontakten 2 bzw. 3 bzw. Schleifkontakten 15 bzw. 16 ein ausreichender Abstand besteht, um eine dielektrische Trennungsbedingung des Schaltgerätes bzw. der Mittelspannungs-Schaltanlage zu erfüllen.The function of the three-position circuit breaker 1 of FIG. 1 will be described below on the basis of FIGS. 1 to 3 explained in more detail. As already stated above, the three-position switch-disconnector 1 is in the FIG. 1 In its first position with trained main current path via the first fixed contact 2, the rotatable moving contact 4 and the second fixed contact 3. When initiating a drive movement in the rotary support 7 to perform a switching operation and finally to form a separation path for dielectric separation is first a figuratively not shown Achieved position in which the first pair of knife ends 5 is in conductive connection with both the first fixed contact 2 and the first sliding contact 15 and the second pair of knife ends 6 is in electrically conductive connection with the second fixed contact 3 and the second sliding contact 16, so that at this time, a commutation of the main current path is introduced to the secondary current path with the extinguishing contact system 9 closed. Upon further rotational movement, the first knife pair end 5 and the second knife pair end 6 are then only in conductive connection with the first sliding contact 15 and the second sliding contact 16, so that the main current path is interrupted and the commutation is completed. In this case, the cam 18 engages with its curved path 19 on the rocker 20 so that is caused by rotation of the rocker 20 about the pivot point 21 via the guide member 23 of the moving contact terminal pin 14 of the extinguishing contact system 9 to a movement, which against the spring force of the contact pressure spring 13 can be introduced and leads to the opening of the extinguishing contact system 9, so that an arc in the extinguishing contact system 9 of the vacuum interrupter 10 is ignited in the secondary flow path, which at a current zero crossing of the guided via the switching device AC is deleted. Upon further rotation, the position of the FIG. 2 reached, in which the rotatable moving contact 4 is in a second position with trained disconnected position and completely interrupted current flow, further the cam 18 with its curved path 19 still attacks the rocker 20 and the extinguishing contact system 9 of the secondary flow path remains open, and between the Knife pair ends 5 and 6 and the fixed contacts 2 and 3 or sliding contacts 15 and 16 is a sufficient distance to meet a dielectric separation condition of the switching device or the medium-voltage switchgear.

Mit anderen Worten wird also zwischen der ersten Position des eingeschalteten Zustandes des Dreistellungslasttrennschalters 1 der Figur 1 und der zweiten Position mit ausgebildeter Trennstrecke des Dreistellungslasttrennschalters 1 der Figur 2 durch Einleiten einer Drehbewegung in den Drehstützer 7 und damit den drehbaren Bewegkontakt 4 ein Drehwinkelbereich des drehbaren Bewegkontaktes 4 derart durchschritten, dass zunächst eine Kommutierung des über das Schaltgerät fließenden Wechselstromes vom Hauptstrompfad auf den Nebenstrompfad ermöglicht ist und bei gelöschtem Lichtbogen und weiterer Drehbewegung eine Ausbildung der Trennstrecke unter Erreichen der zweiten Position der Figur 2 ermöglicht ist.In other words, between the first position of the switched state of the three-position circuit breaker 1 of the FIG. 1 and the second position with formed separation distance of the three-position load circuit breaker 1 of FIG. 2 by initiating a rotational movement in the rotary support 7 and thus the rotatable moving contact 4, a rotation angle range of the rotatable moving contact 4 so passed through that initially a commutation of the alternating current flowing through the switching device from the main current path is made possible on the secondary current path and at extinguished arc and further rotational movement training the Separation distance under reaching the second position of the FIG. 2 is possible.

Beim Einleiten weiterer Drehbewegung erreicht der drehbare Bewegkontakt 4 schließlich seine dritte Stellung wie in Figur 3 dargestellt, in welcher er sich mit dem zweiten Festkontakt 3 einerseits über das erste Messerpaarende 5 und mit dem Erdungskontakt 24 über das zweite Messerpaarende 6 in leitender Verbindung befindet, so dass eine Erdung aller mit dem zweiten Festkontakt 3 in leitender Verbindung stehenden Anlagenteile ausgebildet ist.When initiating further rotational movement of the rotatable moving contact 4 finally reaches its third position as in FIG. 3 shown, in which it is in conductive connection with the second fixed contact 3 on the one hand via the first knife pair end 5 and the ground contact 24 via the second knife pair end 6, so that a grounding of all the second fixed contact 3 is in a conductive connection system parts.

Ein Einschaltvorgang des Dreistellungslasttrennschalters 1 geschieht durch Einleiten einer Drehbewegung in entgegen gesetzter Richtung zur Drehbewegung des Einschaltvorganges des in der Trennstellung oder der Erdungsstellung befindlichen Dreistellungslasttrennschalters 1, wie in Figur 3 dargestellt, und Drehung des drehbaren Bewegkontaktes 4 zurück in die Stellung der Figur 1, bis das erste Messerpaarende 5 mit dem ersten Festkontakt 2 bzw. das zweite Messerpaarende 6 mit dem zweiten Festkontakt 3 in leitende Verbindung gelangt.A switch-on of the three-position circuit breaker 1 is done by initiating a rotational movement in the opposite direction to the rotational movement of the switching of the in the disconnected position or the grounding position three-position circuit breaker 1, as in FIG. 3 represented, and rotation of the rotatable moving contact 4 back to the position of FIG. 1 until the first pair of knife ends 5 comes into conductive connection with the first fixed contact 2 and the second pair of knife ends 6 with the second fixed contact 3.

Durch den Klappmechanismus 25 ist dabei gewährleistet, dass beim Einschaltvorgang das Löschkontaktsystem 9 in seinem geöffneten Zustand verbleibt, weil durch die Feder 28 der Federhebel 27 den maximalen Radius der Kurvenbahn zur Führung des Führungsbolzens 22 ergibt, wie bereits weiter oben beschrieben.By the folding mechanism 25 is ensured that when switching the extinguishing contact system 9 remains in its open state, because by the spring 28 of the spring lever 27, the maximum radius of the cam track for guiding the guide pin 22 results, as already described above.

Dadurch ist es möglich, die Vakuumschaltröhre 10 des Löschkontaktsystems 9 kostengünstig auszuführen, da diese beim Einschaltvorgang nicht beteiligt ist und somit keine besonderen Anforderungen an die Einschaltfestigkeit der Vakuumschaltröhre 10 gestellt werden müssen. Weiterhin ist bei der Anordnung der Nebenstrompfad durch kostengünstige Materialien, wie beispielsweise Stahl, Edelstahl oder Aluminium ausbildbar, weil über den Nebenstrompfad lediglich kurzfristig kurzzeitig ein Strom geführt wird und insbesondere kein Kurzschlussstrom im Nebenstrompfad auftritt.This makes it possible to cost-effectively carry out the vacuum interrupter 10 of the extinguishing contact system 9, since this is not involved in the switch-on and thus no special requirements for the switch-on of the vacuum interrupter 10 must be made. Furthermore, in the arrangement of the secondary flow path can be formed by low-cost materials such as steel, stainless steel or aluminum, because on the secondary flow path only briefly briefly a current is performed and in particular no short-circuit current occurs in the secondary flow path.

Figur 4 zeigt ein dreiphasiges Schaltgerät 1, wobei jede Phase 31, 32 oder 33 gemäß dem Ausführungsbeispiel der Figuren 1 bis 6 ausgebildet ist, von denen die Gehäuse 29 ersichtlich sind und wobei die einzelnen Phasen 31, 32 und 33 über Verbindungselemente 34 miteinander verbunden sind, so dass eine gleichzeitige Betätigung aller Phasen durch Einleitung einer Drehbewegung eines figürlich nicht dargestellten Antriebes in den Drehstützer 7 ermöglicht ist. Die Erdungskontakte 24 der Phasen 31, 32 und 33 sind über eine Erdungsschiene 35 miteinander verbunden, welche ihrerseits geerdet ist. Ein Rahmen 36 ist als Halterung des Dreistellungslasttrennschalters 1 und zum Anordnen von Sammelschienenanschlüssen 37, 38 und 39 sowie von Kabelabgangsanschlüssen 40, 41 und 42 der Schaltanlage vorgesehen. FIG. 4 shows a three-phase switching device 1, wherein each phase 31, 32 or 33 according to the embodiment of FIGS. 1 to 6 is formed, of which the housing 29 are visible and wherein the individual phases 31, 32 and 33 are interconnected via connecting elements 34, so that a simultaneous actuation of all phases by initiating a rotational movement of a drive not shown in the rotary support 7 is made possible. The grounding contacts 24 of the phases 31, 32 and 33 are connected to each other via a ground rail 35, which in turn is grounded. A frame 36 is as a holder of the three-position load break switch 1 and for arranging busbar terminals 37, 38 and 39th and provided by cable outlet terminals 40, 41 and 42 of the switchgear.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
DreistellungslasttrennschalterThree-position switch disconnectors
22
erster Festkontaktfirst fixed contact
33
zweiter Festkontaktsecond fixed contact
44
Bewegkontaktmoving contact
55
erstes Messerpaarendefirst pair of knife ends
66
zweites Messerpaarendesecond pair of knife ends
77
Drehstützerrotary supporters
88th
leitende Verbindungconductive connection
99
LöschkontaktsystemExtinguishing contact system
1010
VakuumschaltröhreVacuum interrupter
1111
Bewegkontaktmoving contact
1212
Festkontaktfixed contact
1313
KontaktdruckfederContact pressure spring
1414
Bewegkontakt-AnschlussbolzenMoving contact terminal bolts
1515
erster Schleifkontaktfirst sliding contact
1616
zweiter Schleifkontaktsecond sliding contact
1717
Verbindungselementconnecting element
1818
Kurvenscheibecam
1919
Kurvenbahncam track
19'19 '
erster Abschnittfirst section
19"19 "
zweiter Abschnittsecond part
2020
Wippeseesaw
2121
Drehpunktpivot point
2222
Führungsbolzenguide pins
2323
Führungselementguide element
2424
Erdungskontaktground contact
2525
KlappmechanikHinge
2626
Drehhebellever
2727
Federhebelspring lever
2828
Federfeather
2929
Gehäusecasing
3030
Befestigungselementfastener
31, 32, 3331, 32, 33
Phasenphases
3434
Verbindungselementefasteners
3535
Erdungsschieneground bus
3636
Rahmenframe
37, 38, 3937, 38, 39
SammelschienenanschlüsseBusbar connections
40, 41, 4240, 41, 42
KabelabgangsanschlüsseCable outlet ports

Claims (3)

  1. Three-position load isolating switch (1) for medium-voltage switchgear assemblies having a main contact system, formed from a first fixed contact (2) and a second fixed contact (3), said fixed contacts being arranged diametrically opposing one another, and from a moving contact (4) which can be rotated by means of a rotary support (7) which is arranged centrally between the first fixed contact (2) and the second fixed contact (3), so as to form a main current path in a first position of the rotatable moving contact (4), so as to form an isolating distance in a second position of the rotatable moving contact (4) and so as to form an earthing position with an earthing contact system in a third position of the rotatable moving contact, and also from a secondary current path which is formed from the first fixed contact (2), from the second fixed contact (3), from an arc-quenching contact system (9) and also from a first sliding contact (15) and a second sliding contact (16) for forming a conductive connection to the rotatable moving contact (4) in a rotation angle region of the rotatable moving contact (4), said rotation angle region being located between the first position and the second position, such that when a rotary movement in the rotatable moving contact (4) is initiated, commutation of an alternating current which flows via the switching device from the main current path to the secondary current path is made possible, wherein the rotatable moving contact (4) has means (18, 19, 25) for interrupting the arc-quenching contact system (9), and when the arc is quenched and a further rotary movement is initiated, formation of the isolating distance is enabled, wherein the arc-quenching contact system (9) comprises a vacuum interrupter (10), wherein the means (18, 19, 25) comprise a cam disk (18) for actuating a rocker (20) coupled by means of a guide element (23) to a moving contact connecting pin (14) of the vacuum interrupter (10),
    c h a r a c t e r i s e d in that
    the means (18, 19, 25) further comprise a tilting mechanism (25) such that during a making operation of the three-position load isolating switch (1) from the third or second position of the rotatable moving contact (4) into its first position, the arc-quenching contact system (9) is interrupted.
  2. Switching device according to claim 1,
    characterised in that
    the vacuum interrupter (10) has a contact system which is closable by means of a contact pressure spring (13).
  3. Switching device according to claim 1 or 2,
    characterised in that
    the earthing contact system is formed by an earthing contact (24), the second fixed contact (3) as the earthing countercontact and the rotatable moving contact (4).
EP13726788.6A 2012-06-25 2013-06-04 Three-position load isolating switch for medium-voltage switchgear assemblies Active EP2845213B1 (en)

Applications Claiming Priority (2)

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DE102012210720 2012-06-25
PCT/EP2013/061437 WO2014001029A1 (en) 2012-06-25 2013-06-04 Three-position load isolating switch for medium-voltage switchgear assemblies

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EP2845213A1 EP2845213A1 (en) 2015-03-11
EP2845213B1 true EP2845213B1 (en) 2016-08-03

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CN (1) CN104335312B (en)
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Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3034251B1 (en) 2015-03-27 2017-04-28 Schneider Electric Ind Sas SWITCH OF A THREE-PHASE NETWORK
DE202017104597U1 (en) * 2017-08-01 2018-11-13 Walter Kraus Gmbh Residual load-break switch
EP3928344B1 (en) * 2019-03-29 2023-02-15 Siemens Aktiengesellschaft Optimised three-position switch
CN112435876B (en) * 2020-11-26 2023-05-23 海南电网有限责任公司三亚供电局 Three-station switch structure for comprehensive cabinet
EP4053871A1 (en) 2021-03-03 2022-09-07 ABB Schweiz AG A medium voltage switching apparatus
FR3121267A1 (en) 2021-03-24 2022-09-30 Schneider Electric Industries Sas Switching system of an electrical device
CN114613638B (en) * 2022-03-22 2024-01-16 宁波剑润机电有限公司 Three-station position signal switching device
EP4276872A1 (en) * 2022-05-12 2023-11-15 ABB Schweiz AG A medium voltage switching apparatus
EP4277059A1 (en) * 2022-05-12 2023-11-15 ABB Schweiz AG Switchgear equipment for electric power distribution grids
EP4276869A1 (en) * 2022-05-12 2023-11-15 ABB Schweiz AG A medium voltage switching apparatus
EP4276874A1 (en) * 2022-05-12 2023-11-15 ABB Schweiz AG A medium voltage switching apparatus
EP4276870A1 (en) * 2022-05-12 2023-11-15 ABB Schweiz AG A medium voltage switching apparatus
EP4283645A1 (en) * 2022-05-25 2023-11-29 ABB Schweiz AG A medium voltage switching apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2719154B1 (en) * 1994-04-25 1996-06-07 Merlin Gerin Medium voltage electric switch.
FR2722912B1 (en) * 1994-07-20 1996-09-13 Schneider Electric Sa MEDIUM VOLTAGE ELECTRIC SWITCHES
DE102004006476B4 (en) 2004-02-04 2006-02-09 Siemens Ag Switch disconnectors
FR2946180B1 (en) * 2009-05-26 2012-12-14 Areva T & D Sa INTERNAL LATCHING AND INTERLOCKING DEVICE AT A SWITCH OR A CIRCUIT BREAKER.
WO2011147717A1 (en) * 2010-05-25 2011-12-01 Siemens Aktiengesellschaft Switch disconnector
DE202010009448U1 (en) * 2010-06-23 2010-09-09 Ipt International Power & Technology Gmbh High voltage switching device

Also Published As

Publication number Publication date
CN104335312B (en) 2017-05-24
EP2845213A1 (en) 2015-03-11
CN104335312A (en) 2015-02-04
ES2601385T3 (en) 2017-02-15
WO2014001029A1 (en) 2014-01-03

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