EP2789000A1 - Switching device, more particularly a load interrupter switch, for medium-voltage switching systems - Google Patents

Switching device, more particularly a load interrupter switch, for medium-voltage switching systems

Info

Publication number
EP2789000A1
EP2789000A1 EP13700673.0A EP13700673A EP2789000A1 EP 2789000 A1 EP2789000 A1 EP 2789000A1 EP 13700673 A EP13700673 A EP 13700673A EP 2789000 A1 EP2789000 A1 EP 2789000A1
Authority
EP
European Patent Office
Prior art keywords
contact
rotatable
switching device
moving contact
fixed contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13700673.0A
Other languages
German (de)
French (fr)
Other versions
EP2789000B1 (en
Inventor
Stefan Hohmann
Daniel Pesch
Stefan Wolf
Rene Zlydnik
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2789000A1 publication Critical patent/EP2789000A1/en
Application granted granted Critical
Publication of EP2789000B1 publication Critical patent/EP2789000B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • H01H33/122—Load break switches both breaker and sectionaliser being enclosed, e.g. in SF6-filled container
    • 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
    • H01H33/128—Load break switches comprising a separate circuit breaker being operated by a separate mechanism interlocked with the sectionalising mechanism
    • 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
    • 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
    • H01H33/022—Details particular to three-phase circuit breakers

Definitions

  • Switchgear in particular switch disconnector, for medium-voltage switchgear
  • the invention relates to a switching device, in particular a load-break switch, for medium-voltage switchgear.
  • Such load break switches for medium-voltage switching systems for example, from DE 10 2004 006 476 AI be ⁇ known and comprises a main contact system and a shunt branch, in which the shunt path, a clear contact ⁇ arrangement for extinguishing an arc, as well as isolating contact arrangement are provided for providing a dielectric strength ,
  • Object of the present invention is to provide a switching device of the type mentioned, which is inexpensive to produce in a compact design.
  • a switching device 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 one by means of a centrally between the first fixed contact and the second fixed contact arranged rotary support rotatable moving contact to form a main current path in a first position of the moving contact and forming a separation path in a second position of the rotatable moving contact and a secondary benströmen, formed from the first fixed contact, the ⁇ th 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 a rotational angle range of the rotatable moving contact located between the first position and the second position, such that during insertion n a rotary movement in the navba Ren moving contact a commutation of an alternating current flowing through the switching device from the main current path is made possible
  • Such a switching device 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 ⁇ arranged there between rotatable moving contact an arrangement of main current path and Maustrompfad in a small space next to each other by the commutation of the rotational movement is made possible by the switching device from the main current path to the secondary current path.
  • a switching device such as a cost ⁇ cheap construction, because by the auxiliary current path being ⁇ arranged quenching contact system both this and the first and second sliding contacts as well as further connecting means to the first and the second fixed contact from cultivatedgünsti ⁇ gem material, such as steel or stainless steel or aluminum or the like, can be produced because of the Crowstrompfad only a short time in a switching operation is performed until after arc quenching in Lösch- contact system a transfer to the disconnected position of the circuit breaker happens, so that the requirements for the material properties of the Maustrompfades lower are considered to be the requirements for the material properties of the main flow path.
  • the extinguishing contact system comprises a vacuum interrupter with 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 for interrupting the extinguishing contact system does not attack it, so that the arrangement of the extinguishing contact system in the bypass flow path only a small spring force is necessary to ⁇ special for the contact pressure spring because no run short ⁇ circuit current on the bypass flow path and thus for example, no bouncing occurs which significantly higher spring forces benöti ⁇ gen would to the contact system To keep vacuum interrupter in ge ⁇ closed state.
  • the means comprise a rocker for actuating a cam which is coupled to a moving contact connecting bolt of the vacuum interrupter by means of a guide element.
  • the rotatable moving contact is designed to be rotatable by 360 °. This ensures in an advantageous manner that when turning only in one direction, a switch-on of the switching device by initiating the rotational movement in the same direction and transferring the rotatable moving contact from the second position to the first position of the switching without the participation of Volunteerstrompfades and in particular without involvement the vacuum interrupter of the
  • FIG. 1 shows an exemplary embodiment of a switching device according to the invention in a first position
  • Figures 2 to 6 the switching device of Figure 1 in various positions during the execution NEN ei ⁇ nes switching operation and forming an isolating distance;
  • FIG. 7 shows a three-dimensional view of an exemplary embodiment of a three-phase
  • FIG. 8 the switching device according to the exemplary embodiment of FIG. 1 in conjunction with a
  • FIG. 9 shows the switching device of FIG. 8 with the earthing switch in a second position.
  • Figure 1 shows a switching device in the form of a circuit breaker ⁇ switch 1 for use in medium-voltage switchgear, which are not shown in detail figurative, the load-disconnect switch 1 is connected to a first fixed contact 2 with a busbar connection of the switchgear and with ei ⁇ A second fixed contact 3 with a cable outlet of the medium-voltage switchgear is connectable.
  • the first Festkon ⁇ clock 2 and the second fixed contact 3 formed of a main contact system and a main current path of the circuit breaker 1 together with egg nem rotating moving contact.
  • the Bewegkon ⁇ clock 4 is designed as a pair of knives and includes a first Knife pair end 5 and a second pair of knife ends 6 and a figuratively not shown further conductive connection between ⁇ first knife pair end 5 and second pair of knife 6 and is located in the figure 1 in a first position in which the first knife pair end 5 with the first fixed contact 2 a conductive Connection forms and the second knife ⁇ pair 6 forms a conductive Ver ⁇ bond with the second fixed contact 3, so that a current flow through the load circuit breaker 1 and via the main current path is possible.
  • the rotating moving contact 4 is in this case be ⁇ consolidates to a rotating supporter 7, in which rotation supporters 7 is a drive movement of a drive figurative also not shown for rotating the rotary Stützers 7, and thus allows rotation of the rotatable moving contact.
  • 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 figure 1 is in the closed state by a contact pressure spring 13 on a BewegWallet- connecting bolt 14 exerts a compressive force for holding in the closed position of the extinguishing contact system 9.
  • the Beweg ⁇ contact 11 of the extinguishing contact system 9 is in turn conductively connected to a first sliding contact 15.
  • a second sliding contact 16 is by means of another conductive Ver ⁇ binding element 17 with the second fixed contact 3 is electrically conductively connected, so that after initiating a rotational movement in the rotary supporters 7 and rotation of the rotatable moving contact 4 in a contact position in which the first pair of knives end 5 or the second knife pair of end 6 of rotatable B e ⁇ wegternes 4 with the first sliding contact 15 and the second sliding contact 16 is in conductive connection, a Costrompfad 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 Sliding contact 16, the conductive connecting member 17 and the second fixed contact 3 is formed, as with reference to Figures 2 to 6 explained in more detail below.
  • a rocker 18 which has a cam track 19, through which a cam 20 can be actuated during a rotation ⁇ movement of the rotatable moving contact 4, which cam 20 rotatably mounted at a pivot point 21 and by means of a guide pin 22 in ih ⁇ movement is guided, wherein a guide member 23 is provided ⁇ see, by which the cam 20 moves the Bewegkon ⁇ clock terminal pin 14 of the extinguishing contact system 9 and the extinguishing contact system 9 opens.
  • the switch disconnector 1 is disposed in a housing 24 which is filled with a Iso ⁇ liergas or an insulating liquid and, on the medium-voltage switchgear can be attached and mounted with ⁇ means of fasteners, one of which is exemplary only designated 25th
  • ⁇ means of fasteners one of which is exemplary only designated 25th
  • the function of the circuit breaker 1 of Figure 1 will be explained in more detail below with reference to Figures 1 to 6.
  • the switch-disconnector 1 is in its first position with trained Hauptstrompfad on the first fixed contact 2, the rotatable moving contact 4 and the second fixed contact 3.
  • a switch-on of the switch-disconnector 1 is done by further initiation of a rotary movement of the switch-disconnector in the disconnected position 1, as shown in Figure 6 Darge ⁇ , and further rotation of the rotatable moving contact 4 in the same direction until finally the second knife pair end 6 with the first fixed contact 2 and the first pair of knives end 5 of the 10th to the second fixed contact 3 comes in conductive connection, wherein a Einschaltschreibbogen can be ignited before already, which is not problematic in an arrangement of the circuit breaker 1 in a with an insulating filled j ⁇ th container, and in particular allows the vacuum interrupter of the Erase contact system 9 cost ⁇ low perform, 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.
  • Figure 7 shows a three-phase switching device 1, wherein each Pha ⁇ se 26, 27 or 28 is formed according to the embodiment of Figures 1 to 6, of which the housing 24 are visible and wherein the individual phases 26, 27 and 28 via connecting elements 29 are connected to each other, so that a simultaneous actuation of all phases by initiating a Rotary movement of a drive, not shown in the figure, is made possible in the rotary support 7.
  • FIG. 8 shows the switch disconnector 1 in its second STEL lung-formed separating section as described with reference to the Fi ⁇ gur 6 already explained, wherein a ground terminal 30 is provided in Figure 8 at two ⁇ th fixed contact 3, which in the Figure 8 is lei ⁇ tend connected to a Erdungsbewegtitle 31, which is rotatably mounted GE at a pivot point 32 and connected to ground potential.
  • the switching ⁇ positions of switch disconnector 1 and earthing switch are variably combined with each other, so, for example, even in an error within the container closed main bus path and thus switched busbar the entire current path are grounded and thereby effectively a pressure build-up in an arc in the container can be prevented.

Landscapes

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

Abstract

In order to construct a switching device, particularly a load interrupter switch, for medium-voltage switching systems, with a compact design that can be produced cost-effectively, the invention relates to a switching device, particularly a load interrupter switch (1), for medium-voltage switching systems, comprising a main contact system formed from a first fixed contact (2) and a second fixed contact (3), which are diametrically opposite from one another, and a moving contact (4) rotatable by means of a rotary support (7) arranged centrally between the first fixed contact (2) and the second fixed contact (3), forming a main current path in a first position of the rotatable moving contact (4) and forming an isolation path in a second position of the rotatable moving contact (4) as well as a secondary current path formed from the first fixed contact (2), the second fixed contact (3), a blow-out contact system (9) as well as a first sliding contact (15) and a second sliding contact (16) for forming a conductive connection to the rotatable moving contact (4) in an angle of rotation range of the rotatable moving contact (4) between the first position and the second position such that, if a rotary motion of the rotatable moving contact (4) is initiated, commutation of an alternating current flowing through the switching device from the main current path to the secondary current path is enabled, wherein the rotatable moving contact (4) has means (18, 19) for interrupting the blow-out contact system (20), and formation of the isolation path is enabled in the event of an extinguished arc and initiation of further rotational movement.

Description

Beschreibung description
Schaltgerät, insbesondere Lasttrennschalter, für Mittelspannungs-Schaltanlagen Switchgear, in particular switch disconnector, for medium-voltage switchgear
Die Erfindung betrifft ein Schaltgerät, insbesondere einen Lasttrennschalter, für Mittelspannungs-Schaltanlagen . The invention relates to a switching device, in particular a load-break switch, for medium-voltage switchgear.
Ein derartiger Lasttrennschalter für Mittelspannungs-Schalt- anlagen ist beispielsweise aus der DE 10 2004 006 476 AI be¬ kannt und umfasst ein Hauptkontaktsystem sowie einen Nebenschlusszweig, in welchem Nebenschlusszweig eine Löschkontakt¬ anordnung zum Löschen eines Lichtbogens sowie eine Trennkontaktanordnung zum Bereitstellen einer Spannungsfestigkeit vorgesehen sind. Such load break switches for medium-voltage switching systems, for example, from DE 10 2004 006 476 AI be ¬ known and comprises a main contact system and a shunt branch, in which the shunt path, a clear contact ¬ arrangement for extinguishing an arc, as well as isolating contact arrangement are provided for providing a dielectric strength ,
Aufgabe der vorliegenden Erfindung ist es, ein Schaltgerät der eingangs genannten Art auszubilden, welches bei einem kompakten Aufbau kostengünstig herstellbar ist. Object of the present invention is to provide a switching device of the type mentioned, which is inexpensive to produce in a compact design.
Erfindungsgemäß gelöst wird dies durch ein Schaltgerät, ins¬ besondere einem Lasttrennschalter, 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 und Ausbildung einer Trennstrecke in einer zweiten Position des drehbaren Bewegkontaktes sowie einem Ne- benstrompfad, gebildet aus dem ersten Festkontakt, dem zwei¬ ten 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 drehba- ren Bewegkontakt eine Kommutierung eines über das Schaltgerät fließenden Wechselstromes vom Hauptstrompfad auf den Neben- strompfad 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. This is achieved according to the invention by a switching device, in particular ¬ a switch disconnector, 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 one by means of a centrally between the first fixed contact and the second fixed contact arranged rotary support rotatable moving contact to form a main current path in a first position of the moving contact and forming a separation path in a second position of the rotatable moving contact and a secondary benströmen, formed from the first fixed contact, the ¬ th 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 a rotational angle range of the rotatable moving contact located between the first position and the second position, such that during insertion n a rotary movement in the drehba Ren moving contact a commutation of an alternating current flowing through the switching device from the main current path is made possible on the secondary current path, wherein the rotatable moving contact means for interrupting the extinguishing contact system, and with erased arc and initiation of further rotational movement forming the separation distance is possible.
Ein derartiges Schaltgerät weist einerseits einen kompakten Aufbau auf, weil durch die diametrale Anordnung von erstem Festkontakt und zweitem Festkontakt zueinander sowie dem da¬ zwischen 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 Wechselstro- mes vom Hauptstrompfad auf den Nebenstrompfad ermöglicht ist. Andererseits weist ein derartiges Schaltgerät einen kosten¬ günstigen Aufbau auf, weil durch das im Nebenstrompfad ange¬ ordnete Löschkontaktsystem sowohl dieses als auch die ersten und zweiten Schleifkontakte sowie weitere Verbindungsmittel zu dem ersten bzw. dem zweiten Festkontakt aus kostengünsti¬ gem 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 Lösch- kontaktsystem ein Überführen in die Trennstellung des Lasttrennschalters geschieht, so dass die Anforderungen an die Materialeigenschaften des Nebenstrompfades geringer sind als die Anforderungen an die Materialeigenschaften des Hauptstrompfades . Such a switching device 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 ¬ arranged there between rotatable moving contact an arrangement of main current path and Nebenstrompfad in a small space next to each other by the commutation of the rotational movement is made possible by the switching device from the main current path to the secondary current path. On the other hand, a switching device such as a cost ¬ cheap construction, because by the auxiliary current path being ¬ arranged quenching contact system both this and the first and second sliding contacts as well as further connecting means to the first and the second fixed contact from kostengünsti ¬ gem material, such as steel or stainless steel or aluminum or the like, can be produced because of the Nebenstrompfad only a short time in a switching operation is performed until after arc quenching in Lösch- contact system a transfer to the disconnected position of the circuit breaker happens, so that the requirements for the material properties of the Nebenstrompfades lower are considered to be the requirements for the material properties of the main flow path.
In einer vorteilhaften Ausgestaltung der Erfindung umfasst das Löschkontaktsystem eine Vakuumschaltröhre mit einem mit¬ tels einer Kontaktdruckfeder schließbaren Kontaktsystem. Das Kontaktsystem der Vakuumschaltröhre ist durch die Kontakt- druckfeder 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 ins¬ besondere für die Kontaktdruckfeder nur eine geringe Federkraft notwendig ist, da über den Nebenstrompfad kein Kurz¬ schlussstrom geführt wird und damit beispielsweise auch kein Prellen auftritt, welches deutlich höhere Federkräfte benöti¬ gen würde, um das Kontaktsystem der Vakuumschaltröhre im ge¬ schlossenen Zustand zu halten. In an advantageous embodiment of the invention, the extinguishing contact system comprises a vacuum interrupter with 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 for interrupting the extinguishing contact system does not attack it, so that the arrangement of the extinguishing contact system in the bypass flow path only a small spring force is necessary to ¬ special for the contact pressure spring because no run short ¬ circuit current on the bypass flow path and thus for example, no bouncing occurs which significantly higher spring forces benöti ¬ gen would to the contact system To keep vacuum interrupter in ge ¬ closed state.
In weiterer vorteilhafter Ausgestaltung der Erfindung umfas- sen die Mittel eine Wippe zur Betätigung einer mittels eines Führungselementes mit einem Bewegkontakt-Anschlussbolzen der Vakuumschaltröhre gekoppelten Kurvenscheibe. Ein derartiger Aufbau ist mechanisch einfach und damit kompakt und kosten¬ günstig, da mit diesem Aufbau lediglich Arbeit gegen die ge- ringe Federkraft der Kontaktdruckfeder des Löschkontaktsys¬ tems zu verrichten ist. In a further advantageous embodiment of the invention, the means comprise a rocker for actuating a cam which is coupled to a moving contact connecting bolt of the vacuum interrupter by means of a guide element. Such a structure is mechanically simple and compact and cost ¬ favorable because of this construction work against the overall rings spring force of the contact pressure spring of Löschkontaktsys ¬ tems is merely to do.
In einer besonders vorteilhaften Ausgestaltung der Erfindung ist der drehbare Bewegkontakt um 360° drehbar ausgebildet. Dadurch ist in vorteilhafter Weise gewährleistet, dass bei einer Drehung lediglich in einer Richtung ein Einschaltvorgang des Schaltgerätes durch Einleiten der Drehbewegung in die gleiche Richtung und Überführung des drehbaren Bewegkontaktes aus der zweiten Position in die erste Position der Einschaltvorgang ohne Beteiligung des Nebenstrompfades und insbesondere ohne Beteiligung der Vakuumschaltröhre des In a particularly advantageous embodiment of the invention, the rotatable moving contact is designed to be rotatable by 360 °. This ensures in an advantageous manner that when turning only in one direction, a switch-on of the switching device by initiating the rotational movement in the same direction and transferring the rotatable moving contact from the second position to the first position of the switching without the participation of Nebenstrompfades and in particular without involvement the vacuum interrupter of the
Löschkontaktsystems ausgeführt wird, so dass an die Vakuum¬ schaltröhre keine Anforderungen bezüglich Einschaltfestigkeit oder dergleichen gestellt werden, weil ein Einschaltlichtbo- gen beim Einschaltvorgang zwischen dem drehbaren Bewegkontakt und den ersten bzw. zweiten Festkontakten gezündet wird, was insbesondere bei Anordnung des Schaltgerätes in einem mit ei¬ nem Isoliermedium, beispielsweise einem Isoliergas oder einer Isolierflüssigkeit gefüllten Gehäuse eine einfache Möglich- keit zur Ausführung eines Einschaltvorganges darstellt. Die Erfindung wird im Folgenden anhand der Zeichnung und eines Ausführungsbeispiels mit Bezug auf die beiliegenden Figu¬ ren näher erläutert. Es zeigen: Figur 1: ein Ausführungsbeispiel eines erfindungs¬ gemäßen Schaltgerätes in einer ersten Position; Erase contact system is performed so that the vacuum ¬ stop tube no requirements regarding Einschaltfestigkeit or the like are made because a Einschaltlichtbo- is ignited during the switch between the rotatable moving contact and the first and second fixed contacts, which in particular in the arrangement of the switching device in a ei ¬ nem an insulating medium, for example, an insulating gas or insulating liquid filled housing is an easy way to perform a switch-on. The invention is explained in more detail below with reference to the drawing and an embodiment with reference to the accompanying Figu ¬ ren. FIG. 1 shows an exemplary embodiment of a switching device according to the invention in a first position;
Figuren 2 bis 6: das Schaltgerät der Figur 1 in verschiede- nen Stellungen während des Ausführens ei¬ nes Schaltvorganges und Ausbildens einer Trennstrecke ; Figures 2 to 6: the switching device of Figure 1 in various positions during the execution NEN ei ¬ nes switching operation and forming an isolating distance;
Figur 7: eine dreidimensionale Ansicht eines Aus- führungsbeispiels eines dreiphasigen FIG. 7 shows a three-dimensional view of an exemplary embodiment of a three-phase
Schaltgerätes gemäß dem Schaltgerät der Figur 1 ;  Switching device according to the switching device of Figure 1;
Figur 8: das Schaltgerät gemäß dem Ausführungsbei- spiel der Figur 1 in Verbindung mit einemFIG. 8: the switching device according to the exemplary embodiment of FIG. 1 in conjunction with a
Erdungsschalter in einer ersten Position; und Earthing switch in a first position; and
Figur 9: Das Schaltgerät der Figur 8 mit dem Er- dungsschalter in einer zweiten Position. FIG. 9 shows the switching device of FIG. 8 with the earthing switch in a second position.
Figur 1 zeigt ein Schaltgerät in Form eines Lasttrennschal¬ ters 1 zur Anwendung in Mittelspannungs-Schaltanlagen, welche figürlich nicht näher dargestellt sind, wobei der Lasttrenn- Schalter 1 mit einem ersten Festkontakt 2 mit einem Sammel- schienenanschluss der Schaltanlage verbindbar ist und mit ei¬ nem zweiten Festkontakt 3 mit einem Kabelabgang der Mit- telspannungs-Schaltanlage verbindbar ist. Der erste Festkon¬ takt 2 und der zweite Festkontakt 3 bilden gemeinsam mit ei- nem drehbaren Bewegkontakt 4 ein Hauptkontaktsystem und einen Hauptstrompfad des Lasttrennschalters 1 aus. Der Bewegkon¬ takt 4 ist als Messerpaar ausgebildet und umfasst ein erstes Messerpaarende 5 sowie ein zweites Messerpaarende 6 und eine figürlich nicht dargestellte weitere leitende Verbindung zwi¬ schen 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 Messer¬ paarende 6 mit dem zweiten Festkontakt 3 eine leitende Ver¬ bindung ausbildet, so dass ein Stromfluss über den Lasttrennschalter 1 bzw. über den Hauptstrompfad ermöglicht ist. Der drehbare Bewegkontakt 4 ist dabei an einem Drehstützer 7 be¬ festigt, 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 Fest¬ kontakt 12 gebildet ist, wobei das Löschkontaktsystem 9 in der Figur 1 sich im geschlossenen Zustand befindet, indem ei- ne Kontaktdruckfeder 13 auf einen Bewegkontakt- Anschlussbolzen 14 eine Druckkraft ausübt zum Halten in der geschlossenen Stellung des Löschkontaktsystems 9. Der Beweg¬ kontakt 11 des Löschkontaktsystems 9 ist wiederum leitend verbunden mit einem ersten Schleifkontakt 15. Ein zweiter Schleifkontakt 16 ist mittels eines weiteren leitenden Ver¬ bindungselementes 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 Messer- paarende 5 bzw. das zweite Messerpaarende 6 des drehbaren Be¬ wegkontaktes 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 Figuren 2 bis 6 weiter unten näher erläutert. Am drehbaren Bewegkontakt 4 weiterhin vorgesehen ist eine Wippe 18, welche eine Kurvenbahn 19 aufweist, durch die bei einer Dreh¬ bewegung des drehbaren Bewegkontaktes 4 eine Kurvenscheibe 20 betätigbar ist, welche Kurvenscheibe 20 an einem Drehpunkt 21 drehbar gelagert und mittels eines Führungsbolzens 22 in ih¬ rer Bewegung geführt ist, wobei ein Führungselement 23 vorge¬ sehen ist, durch welches die Kurvenscheibe 20 den Bewegkon¬ takt-Anschlussbolzen 14 des Löschkontaktsystems 9 bewegt und das Löschkontaktsystem 9 öffnet. Der Lasttrennschalter 1 ist dabei in einem Gehäuse 24 angeordnet, welches mit einem Iso¬ liergas oder einer Isolierflüssigkeit befüllbar ist und mit¬ tels Befestigungselementen, von denen lediglich eines beispielhaft mit 25 bezeichnet ist, an der Mittelspannungs- Schaltanlage befestigbar und montierbar ist. Die Funktion des Lasttrennschalters 1 der Figur 1 wird im Folgenden anhand der Figuren 1 bis 6 näher erläutert. Wie bereits oben ausgeführt, befindet sich der Lasttrennschalter 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 die Stellung der Figur 2 erreicht, in welcher sich das erste Messerpaarende 5 sowohl mit dem ersten Festkontakt 2 als auch mit dem ersten Schleif¬ kontakt 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 der Stellung der Figur 2 eine Kommutierung vom Hauptstrompfad auf den Nebenstrompfad bei geschlossenem Löschkontaktsystem 9 stattfindet. Bei weiterer Drehbewegung wird die Stellung der Figur 3 erreicht, in welcher sich das erste Messerpaarende 5 bzw. das zweite Mes- serpaarende 6 sich lediglich in leitender Verbindung mit dem ersten Schleifkontakt 15 bzw. dem zweiten Schleifkontakt 16 befinden, so dass der Hauptstrompfad unterbrochen ist. In der Stellung der Figur 3 greift die Wippe 18 mit ihrer Kurvenbahn 19 an der Kurvenscheibe 20 an, so dass durch Drehung der Kurvenscheibe 20 um den Drehpunkt 21 über das Führungselement 23 der Bewegkontakt-Anschlussbolzen 14 des Löschkontaktsystems 9 zu einer Bewegung veranlasst wird, welche gegen die Feder¬ kraft der Kontaktdruckfeder 13 einleitbar ist und zum Öffnen des Löschkontaktsystems 9 führt, so dass ein Lichtbogen im Löschkontaktsystem 9 der Vakuumschaltröhre 10 im Nebenstrom- pfad gezündet wird, welcher bei einem Stromnulldurchgang des über das Schaltgerät geführten Wechselstromes gelöscht wird. In der Stellung der Figur 4 ist dabei das Löschkontaktsys¬ tem 9 vollständig geöffnet und der im geöffneten Löschkontaktsystem 9 der Vakuumschaltröhre 10 brennende Lichtbogen wird beim Stromnulldurchgang gelöscht, während sich erstes Messerpaarende 5 bzw. zweites Messerpaarende 6 mit dem ersten Schleifkontakt 15 bzw. dem zweiten Schleifkontakt 16 immer noch in elektrisch leitender Verbindung befinden, bis nach Beendigung des Löschvorganges und Erreichen der Stellung der Figur 5 schließlich bei weiterer Drehbewegung die Stellung der Figur 6 erreicht wird, in welcher sich der drehbare Be¬ wegkontakt 4 in einer zweiten Position mit ausgebildeter Trennstellung und vollständig unterbrochenem Stromfluss be¬ findet, wobei weiterhin die Wippe 18 mit ihrer Kurvenbahn 19 nicht mehr an der Kurvenscheibe 20 angreift, so dass durch Einwirken der Federkraft der Kontaktdruckfeder 13 das Löschkontaktsystem 9 des Nebenstrompfades wieder geschlossen ist 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 . Figure 1 shows a switching device in the form of a circuit breaker ¬ switch 1 for use in medium-voltage switchgear, which are not shown in detail figurative, the load-disconnect switch 1 is connected to a first fixed contact 2 with a busbar connection of the switchgear and with ei ¬ A second fixed contact 3 with a cable outlet of the medium-voltage switchgear is connectable. The first Festkon ¬ clock 2 and the second fixed contact 3 formed of a main contact system and a main current path of the circuit breaker 1 together with egg nem rotating moving contact. 4 The Bewegkon ¬ clock 4 is designed as a pair of knives and includes a first Knife pair end 5 and a second pair of knife ends 6 and a figuratively not shown further conductive connection between ¬ first knife pair end 5 and second pair of knife 6 and is located in the figure 1 in a first position in which the first knife pair end 5 with the first fixed contact 2 a conductive Connection forms and the second knife ¬ pair 6 forms a conductive Ver ¬ bond with the second fixed contact 3, so that a current flow through the load circuit breaker 1 and via the main current path is possible. The rotating moving contact 4 is in this case be ¬ consolidates to a rotating supporter 7, in which rotation supporters 7 is a drive movement of a drive figurative also not shown for rotating the rotary Stützers 7, and thus allows rotation of the rotatable moving contact. 4 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 figure 1 is in the closed state by a contact pressure spring 13 on a Bewegkontakt- connecting bolt 14 exerts a compressive force for holding in the closed position of the extinguishing contact system 9. The Beweg ¬ contact 11 of the extinguishing contact system 9 is in turn conductively connected to a first sliding contact 15. A second sliding contact 16 is by means of another conductive Ver ¬ binding element 17 with the second fixed contact 3 is electrically conductively connected, so that after initiating a rotational movement in the rotary supporters 7 and rotation of the rotatable moving contact 4 in a contact position in which the first pair of knives end 5 or the second knife pair of end 6 of rotatable B e ¬ wegkontaktes 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 Sliding contact 16, the conductive connecting member 17 and the second fixed contact 3 is formed, as with reference to Figures 2 to 6 explained in more detail below. Further provided on the rotatable moving contact 4 is a rocker 18, which has a cam track 19, through which a cam 20 can be actuated during a rotation ¬ movement of the rotatable moving contact 4, which cam 20 rotatably mounted at a pivot point 21 and by means of a guide pin 22 in ih ¬ movement is guided, wherein a guide member 23 is provided ¬ see, by which the cam 20 moves the Bewegkon ¬ clock terminal pin 14 of the extinguishing contact system 9 and the extinguishing contact system 9 opens. The switch disconnector 1 is disposed in a housing 24 which is filled with a Iso ¬ liergas or an insulating liquid and, on the medium-voltage switchgear can be attached and mounted with ¬ means of fasteners, one of which is exemplary only designated 25th The function of the circuit breaker 1 of Figure 1 will be explained in more detail below with reference to Figures 1 to 6. As already stated above, the switch-disconnector 1 is in its first position with trained Hauptstrompfad on the first fixed contact 2, the rotatable moving contact 4 and the second fixed contact 3. In the initiation of a drive movement in the rotary support 7 for performing a switching operation and Finally, to form a separation path for dielectric separation, the position of Figure 2 is first reached, in which the first knife pair end 5 is in conductive connection both with the first fixed contact 2 and with the first grinding ¬ contact 15 and the second knife pair end 6 with the second fixed contact 3 and the second sliding contact 16 is in electrically conductive connection, so that takes place at this time the position of Figure 2, a commutation of the main current path to the secondary current path with the extinguishing contact system 9. Upon further rotational movement, the position of FIG. 3 is reached, in which the first pair of knife ends 5 and the second pair 6 are only in conductive connection with the first sliding contact 15 or the second sliding contact 16, so that the main current path is interrupted , In the Position of Figure 3 attacks the rocker 18 with its curved path 19 on the cam 20, so that is caused by rotation of the cam 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 bypass path, which is deleted at a current zero crossing of the guided via the switching device AC. In the position of Figure 4 while the Löschkontaktsys ¬ system 9 is fully opened and the burning in an open clear contact system 9 of the vacuum interrupter 10 arc is extinguished at the current zero crossing, whereas the first pair of knives end 5 and second pair of knives end 6 with the first sliding contact 15 and the second Sliding contact 16 are still in electrically conductive connection, until after completion of the deletion process and reaching the position of Figure 5 finally upon further rotation, the position of Figure 6 is reached, in which the rotatable Be ¬ wegkontakt 4 in a second position with trained separation position and completely interrupted current flow be ¬ , wherein furthermore the rocker 18 with its curved path 19 no longer acts on the cam 20, so that by the action of the spring force of the contact pressure spring 13, the extinguishing contact system 9 of the secondary flow path is closed again and between the pair of knife ends 5 or 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 Lasttrennschalters 1 der Fi- gur 1 und der zweiten Position mit ausgebildeter Trennstrecke des Lasttrennschalters 1 der Figur 6 durch Einleiten einer Drehbewegung in den Drehstützer 7 und damit den drehbaren Be- wegkontakt 4 ein Drehwinkelbereich des drehbaren Bewegkontaktes 4 derart durchschritten, dass zunächst eine Kommutierung des über das Schaltgerät fließenden Wechselstromes vom Haupt¬ strompfad auf den Nebenstrompfad ermöglicht ist und bei ge- löschtem Lichtbogen und weiterer Drehbewegung eine Ausbildung der Trennstrecke unter Erreichen der zweiten Position der Figur 6 ermöglicht ist. In other words, between the first position of the switched-on state of the switch-disconnector 1, FIG. 1 and the second position with formed isolating distance of the switch-disconnector 1 of FIG. 6, by introducing a rotational movement into the rotary support 7 and thus the rotatable support. wegkontakt 4 a rotational angle range of the rotatable moving contact 4 such a step that at first a commutation of the alternating current flowing through the switching device from the main ¬ current path is made possible on the Nebenstrompfad and with extinguished arc and further rotational movement forming the separation distance to reach the second position of the figure 6 is possible.
Ein Einschaltvorgang des Lasttrennschalters 1 geschieht durch weiteres Einleiten einer Drehbewegung des in der Trennstellung befindlichen Lasttrennschalters 1, wie in Figur 6 darge¬ stellt, und weiterer Drehung des drehbaren Bewegkontaktes 4 in der gleichen Drehrichtung bis schließlich das zweite Messerpaarende 6 mit dem ersten Festkontakt 2 bzw. das erste Messerpaarende 5 mit dem zweiten Festkontakt 3 in leitende Verbindung gelangt, wobei ein Einschaltlichtbogen bereits vorher gezündet werden kann, was bei einer Anordnung des Lasttrennschalters 1 in einem mit einem Isoliermedium gefüll¬ ten Behälter unproblematisch ist und insbesondere ermöglicht, die Vakuumschaltröhre 10 des Löschkontaktsystems 9 kosten¬ günstig 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 des um 360° drehbaren Bewegkontaktes 4 der Nebenstrompfad durch kostengünstige Ma¬ terialien, wie beispielsweise Stahl, Edelstahl oder Aluminium ausbildbar, weil über den Nebenstrompfad lediglich kurzfris¬ tig kurzzeitig ein Strom geführt wird und insbesondere kein Kurzschlussstrom im Nebenstrompfad auftritt. A switch-on of the switch-disconnector 1 is done by further initiation of a rotary movement of the switch-disconnector in the disconnected position 1, as shown in Figure 6 Darge ¬ , and further rotation of the rotatable moving contact 4 in the same direction until finally the second knife pair end 6 with the first fixed contact 2 and the first pair of knives end 5 of the 10th to the second fixed contact 3 comes in conductive connection, wherein a Einschaltlichtbogen can be ignited before already, which is not problematic in an arrangement of the circuit breaker 1 in a with an insulating filled j ¬ th container, and in particular allows the vacuum interrupter of the Erase contact system 9 cost ¬ low perform, 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 rotatable by 360 ° Bewegkontaktes 4 of the Nebenstrompfad by cost Ma ¬ materials, such as steel, stainless steel or aluminum can be formed because of the Nebenstrompfad kurzfris ¬ term briefly a current is performed and in particular no short-circuit current occurs in the secondary current path.
Figur 7 zeigt ein dreiphasiges Schaltgerät 1, wobei jede Pha¬ se 26, 27 oder 28 gemäß dem Ausführungsbeispiel der Figuren 1 bis 6 ausgebildet ist, von denen die Gehäuse 24 ersichtlich sind und wobei die einzelnen Phasen 26, 27 und 28 über Ver- bindungselemente 29 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. Figure 7 shows a three-phase switching device 1, wherein each Pha ¬ se 26, 27 or 28 is formed according to the embodiment of Figures 1 to 6, of which the housing 24 are visible and wherein the individual phases 26, 27 and 28 via connecting elements 29 are connected to each other, so that a simultaneous actuation of all phases by initiating a Rotary movement of a drive, not shown in the figure, is made possible in the rotary support 7.
Figur 8 zeigt den Lasttrennschalter 1 in seiner zweiten Stel- lung mit ausgebildeter Trennstrecke wie mit Bezug auf die Fi¬ gur 6 bereits näher erläutert, wobei in der Figur 8 am zwei¬ ten Festkontakt 3 ein Erdungsanschluss 30 vorgesehen ist, welcher in der Figur 8 mit einem Erdungsbewegkontakt 31 lei¬ tend verbunden ist, welcher an einem Drehpunkt 32 drehbar ge- lagert ist und mit Erdpotential verbunden ist. 8 shows the switch disconnector 1 in its second STEL lung-formed separating section as described with reference to the Fi ¬ gur 6 already explained, wherein a ground terminal 30 is provided in Figure 8 at two ¬ th fixed contact 3, which in the Figure 8 is lei ¬ tend connected to a Erdungsbewegkontakt 31, which is rotatably mounted GE at a pivot point 32 and connected to ground potential.
In Figur 9 ist der Erdungsbewegkontakt 31 vom Erdungsan¬ schluss 30 getrennt dargestellt, so dass bei der in der Fi¬ gur 8 dargestellten Position des Erdungsbewegkontaktes 31 ei- ne Erdung des Kabelabgangsbereiches des Schaltgerätes ausge¬ bildet ist und in der in der Figur 9 dargestellten Position sich das Schaltgerät im normalen Betriebsmodus befindet. In Figure 9, the Erdungsbewegkontakt is shown separated from the grounding system ¬ circuit 30 31, so that when in the Fi ¬ gur 8 illustrated position of Erdungsbewegkontaktes 31 egg ne grounding of the cable outlet area of the switching device being ¬ forms and in which in the figure 9 illustrated Position the switchgear is in normal operating mode.
Durch den separat ausgeführten Erdungsschalter mit Erdungsbe- wegkontakt 31, welcher über einen separaten Antrieb (figürlich nicht dargestellt) angetrieben wird, sind die Schalt¬ stellungen von Lasttrennschalter 1 und Erdungsschalter variabel miteinander kombinierbar, so kann beispielsweise auch in einem Fehlerfall innerhalb des Behälters auch bei geschlosse- nem Hauptstrompfad und somit zugeschalteter Sammelschiene der gesamte Strompfad geerdet werden und dadurch wirksam ein Druckaufbau bei einem Störlichtbogen im Behälter verhindert werden . Due to the separately designed earthing switch with grounding contact 31, which is driven by a separate drive (not shown in the figure), the switching ¬ positions of switch disconnector 1 and earthing switch are variably combined with each other, so, for example, even in an error within the container closed main bus path and thus switched busbar the entire current path are grounded and thereby effectively a pressure build-up in an arc in the container can be prevented.
Bezugs zeichenliste Reference sign list
1 Lasttrennschalter 1 switch disconnector
2 erster Festkontakt  2 first fixed contact
3 zweiter Festkontakt  3 second fixed contact
4 Bewegkontakt  4 moving contact
5 erstes Messerpaarende  5 first pair of knife ends
6 zweites Messerpaarende  6 second pair of knife ends
7 Drehstützer  7 rotary supports
8 leitende Verbindung  8 conductive connection
9 LöschkontaktSystem  9 extinguishing contact system
10 Vakuumsehaltröhre  10 vacuum tube
11 Bewegkontakt  11 moving contact
12 Festkontakt  12 fixed contact
13 Kontaktdruckteder  13 contact pressure spring
14 Bewegkontakt-Anschlussbolzen 14 moving contact connecting bolts
15 erster Schleifkontakt 15 first sliding contact
16 zweiter Schleifkontakt 16 second sliding contact
17 Verbindungselement 17 connecting element
18 Wippe  18 seesaw
19 Kurvenbahn  19 curved track
20 Kurvenscheibe  20 cam
21 Drehpunkt  21 pivot point
22 Führungsbolzen  22 guide pins
23 Führungselement  23 guide element
24 Gehäuse  24 housing
25 Befestigungselement  25 fastener
26, 27, 28 Phasen  26, 27, 28 phases
29 Verbindungselemente  29 fasteners
30 Erdungsanschluss  30 ground connection
31 Erdungsbewegkontakt  31 earthing contact
32 Drehpunkt  32 pivot point

Claims

Patentansprüche claims
1. Schaltgerät, insbesondere Lasttrennschalter (1), für Mit- telspannungs-Schaltanlagen mit einem Hauptkontaktsystem, ge- bildet aus einem ersten Festkontakt (2) und einem zweiten Festkontakt (3) , welche sich diametral gegenüberstehen, und einem mittels einem mittig zwischen dem ersten Festkontakt (2) und dem zweiten Festkontakt (3) angeordneten Drehstützer (7) drehbaren Bewegkontakt (4) unter Ausbildung eines Haupt- strompfades in einer ersten Position des drehbaren Bewegkontaktes (4) und Ausbildung einer Trennstrecke in einer zweiten Position des drehbaren Bewegkontaktes (4) sowie einem Neben- strompfad, gebildet aus dem ersten Festkontakt (2), dem zwei¬ ten Festkontakt (3), einem Löschkontaktsystem (9) sowie einem ersten Schleifkontakt (15) und einem zweiten Schleifkontakt1. Switching device, in particular switch-disconnector (1), for medium-voltage switchgear with a main contact system, formed of a first fixed contact (2) and a second fixed contact (3), which are diametrically opposed, and one by means of a centrally between the first fixed contact (2) and the second fixed contact (3) arranged rotary support (7) rotatable moving contact (4) to form a main current path in a first position of the rotatable moving contact (4) and forming a separation distance in a second position of the rotatable moving contact ( 4) and a secondary current path formed from the first fixed contact (2), (the two ¬ th fixed contact (3), a clear contact system (9) and a first sliding contact 15) and a second sliding contact
(16) zum Ausbilden einer leitenden Verbindung mit dem drehbaren Bewegkontakt (4) in einem zwischen der ersten Position und der zweiten Position befindlichen Drehwinkelbereich des drehbaren Bewegkontaktes (4) derart, dass beim Einleiten ei- ner Drehbewegung in den drehbaren Bewegkontakt (4) eine Kommutierung eines über das Schaltgerät fließenden Wechselstro¬ mes vom Hauptstrompfad auf den Nebenstrompfad ermöglicht ist, wobei der drehbare Bewegkontakt (4) Mittel (18, 19) zum Un¬ terbrechen des Löschkontaktsystems (20) aufweist, und bei ge- löschtem Lichtbogen und Einleiten weiterer Drehbewegung ein Ausbilden der Trennstrecke ermöglicht ist. (16) for forming a conductive connection with the rotatable moving contact (4) in a rotational angle range of the rotatable moving contact (4) located between the first position and the second position such that upon introduction of a rotational movement into the rotatable moving contact (4) commutation of a current flowing through the switching device Alternating ¬ mes is provided from the main current path onto the auxiliary current path, wherein said rotatable moving contact (4) means (18, 19) for Un ¬ terbrechen the clear contact system (20), and further in overall löschtem arc and introducing Rotary movement forming the separation distance is made possible.
2. Schaltgerät nach Anspruch 1, 2. Switching device according to claim 1,
d a d u r c h g e k e n n z e i c h n e t , d a s s das Löschkontaktsystem (9) eine Vakuumschaltröhre (10) mit einem mittels einer Kontaktdruckfeder (13) schließbaren Kontaktsystem umfasst. That is, the extinguishing contact system (9) comprises a vacuum interrupter (10) having a contact system closable by means of a contact pressure spring (13).
3. Schaltgerät nach Anspruch 2, 3. Switching device according to claim 2,
d a d u r c h g e k e n n z e i c h n e t , d a s s die Mittel (18, 19) eine Wippe (18) zur Betätigung einer mit¬ tels eines Führungselementes (23) mit einem Bewegkontakt- Anschlussbolzen (14) der Vakuumschaltröhre (10) gekoppelten Kurvenscheibe (20) umfassen. characterized in that the means (18, 19) a rocker (18) for actuating a means of ¬ a means of a guide element (23) with a Bewegkontakt- Connection bolts (14) of the vacuum interrupter (10) coupled cam (20).
4. Schaltgerät nach einem der Ansprüche 1 bis 3, 4. Switching device according to one of claims 1 to 3,
d a d u r c h g e k e n n z e i c h n e t , d a s s der drehbare Bewegkontakt (4) um 360° drehbar ausgebildet ist . The rotary moving contact (4) is rotatable through 360 ° so that it is rotatable.
EP13700673.0A 2012-01-24 2013-01-11 Switching device, more particularly a load interrupter switch, for medium-voltage switching systems Active EP2789000B1 (en)

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DE102012200962.0A DE102012200962B4 (en) 2012-01-24 2012-01-24 Switchgear, in particular switch disconnector, for medium-voltage switchgear
PCT/EP2013/050491 WO2013110511A1 (en) 2012-01-24 2013-01-11 Switching device, more particularly a load interrupter switch, for medium-voltage switching systems

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CN104319159B (en) * 2014-11-19 2016-03-23 电光防爆科技股份有限公司 A kind of three-phase isolation switch
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NO2922890T3 (en) 2018-01-27
DE102012200962A1 (en) 2013-07-25
CN104054150A (en) 2014-09-17
DE102012200962B4 (en) 2018-07-26
CN104054150B (en) 2017-05-31
EP2789000B1 (en) 2018-01-03
WO2013110511A1 (en) 2013-08-01

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