EP2528078B1 - Isolating circuits for overhead wires - Google Patents

Isolating circuits for overhead wires Download PDF

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Publication number
EP2528078B1
EP2528078B1 EP12003908.6A EP12003908A EP2528078B1 EP 2528078 B1 EP2528078 B1 EP 2528078B1 EP 12003908 A EP12003908 A EP 12003908A EP 2528078 B1 EP2528078 B1 EP 2528078B1
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EP
European Patent Office
Prior art keywords
contact
contact springs
pair
contact blades
piston
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EP12003908.6A
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German (de)
French (fr)
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EP2528078A1 (en
Inventor
Stefan Dipl.-Ing. Wieduwilt
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BICC Holdings GmbH
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BICC Holdings GmbH
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    • 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
    • H01H33/008—Pedestal mounted switch gear combinations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms

Definitions

  • the invention relates to a circuit breaker for overhead lines and a trolley pole with a circuit breaker.
  • High voltage electrical switches for high voltage systems are well known.
  • the known overhead contactor disconnectors of electrified webs have contact blades and contact springs which are engaged when the switch is closed. To open the switch, the contact blades and contact springs are disengaged.
  • the operation of the known circuit breaker for overhead lines is generally via a mechanical linkage that connects the arranged at the mast head disconnector with a lever on the mast base.
  • the disadvantage is that the mounting of the circuit breaker with the mechanical linkage is relatively expensive, since the installation includes not only the connection, but also the adjustment of moving parts.
  • the operation of the circuit breaker via a mechanical linkage requires a relatively bulky construction of the circuit breaker.
  • the mechanical linkage affects the appearance of the trolley mast.
  • a mast breaker is off DE-A-197 04 933 known.
  • the invention has for its object to provide a circuit breaker for overhead lines, which is easy to assemble on a trolley mast as a compact unit, without significantly affecting the appearance of the mast.
  • an object of the invention to provide a trolley mast with such a circuit breaker.
  • the overhead line circuit breaker has a base plate supporting at least a pair of contact blades and a pair of contact springs.
  • the pair of contact springs is pivotable and the pair of contact blades are stationary so that by pivoting the pivotable pair of contact springs, the contact blades and the contact springs can be engaged or disengaged.
  • An alternative embodiment provides the pivotable arrangement of the contact blades and the stationary arrangement of the contact springs.
  • a drive unit having a piston arranged above the base plate-cylinder assembly.
  • the piston-cylinder arrangement is on the one hand with the pivotable pair of contact springs or contact blades and on the other hand with the base plate in operative connection, so pivoted by retraction or extension of the piston of the piston-cylinder assembly, the pivotal pair of contact springs or contact blades becomes.
  • the actuation of the piston-cylinder arrangement can be carried out hydraulically, wherein the required hydraulic lines are easy to accommodate in the mast, without affecting the external appearance of the mast.
  • the circuit breaker can be delivered and assembled as a prefabricated unit.
  • the circuit breaker works largely maintenance and trouble-free.
  • the noise is relatively low when the circuit breaker is actuated.
  • the hydraulic lines are not electrically conductive, which also increases the safety of the disconnector.
  • circuit breaker according to the invention Another advantage of the circuit breaker according to the invention is that act on the supporting structure of the circuit breaker only relatively small mechanical forces, so that a projecting support structure that can withstand high forces, is not required. This also results in a compact design that does not significantly affect the visual appearance of the mast, especially in urban environments when using the circuit breaker in local traffic.
  • the piston-and-cylinder arrangement is arranged parallel to the base plate when the contact blades and the contact springs are engaged.
  • the piston-cylinder arrangement can also be inclined relative to the base plate as long as the piston-cylinder arrangement is located above the base plate. It is crucial that located next to or below the base plate actuators are not present. Consequently, the forces occurring during switching act only within the circuit breaker, so that the construction carrying the circuit breaker has to absorb only the dead weight of the circuit breaker.
  • the contact blades and the contact springs are secured to insulator caps, which are placed on insulators, which are used in Isolatorfactn.
  • the two contact blades or contact springs of the pivotable pair of contact blades or contact springs are inserted into an insulator receptacle of a common insulator and the contact blades or contact springs of the stationary pair of contact blades or contact springs respectively in insulator recordings of separate insulators.
  • the piston-cylinder arrangement is then preferably attached on the one hand to the insulator receptacle of the pivotable pair of contact blades or contact springs and on the other hand attached to the insulator receptacles of the stationary pair of contact blades or contact springs.
  • the piston-cylinder assembly is not attached to the insulator receptacles of the stationary pair of contact blades or contact springs, but on the base plate.
  • the piston-cylinder assembly is preferably both hingedly connected to the insulator receptacle of the pivotable pair of contact blades or contact springs and hingedly connected to the insulator receptacles of the stationary pair of contact blades or contact springs, so that the piston-cylinder arrangement with respect to the attachment points Can open and close the circuit breaker relative to the base plate.
  • a preferred embodiment of the circuit breaker provides that the pair of contact blades are stationary and the pair of contact springs are pivotally secured to the base plate, the piston-cylinder assembly being in operative connection with both the pair of contact springs and the base plate.
  • a preferred embodiment of the circuit breaker therefore provides that the contact springs are pivotable and the contact blades are arranged stationary, wherein the length of the contact springs in the longitudinal direction is smaller than the length of the contact blades in the longitudinal direction.
  • the contact springs are relatively stiff and the contact blades form a large lever arm. If, due to the torsional forces occurring in the event of a short circuit, the contact blades are turned outwards, the contact springs can better absorb the torsional forces that occur due to the relatively large lever arm of the contact blades.
  • the relatively high stiffness of the contact springs in absorbing the torsional forces of advantage ..
  • the trolley mast according to the invention is characterized in that the mast has the circuit breaker according to the invention.
  • the base plate of the circuit breaker is supported by post insulators, which can be fixed to a plate. Since the circuit breaker according to the invention forms a compact unit and has to take only the weight of the circuit breaker, the fastening elements of the circuit breaker can be dimensioned relatively small in their outer dimensions.
  • a hydraulic unit may be provided at the mast base of the overhead line mast.
  • This hydraulic unit can be designed differently. For example, it is possible to provide only one hydraulic unit for the emergency operation in case of power failure, which has a manual pump to build up the hydraulic pressure in the hydraulic lines. But it can also be provided with a hydraulic pump with an electric pump to operate the circuit breaker automatically.
  • the circuit breaker 1 has a base plate 2 which in the present embodiment carries a pair 3 of contact blades 4A, 4B and a pair 5 of contact springs 6A, 6B.
  • the contact blades 4A, 4B are stationary and the contact springs 6A, 6B are pivotally mounted in isolation on the base plate 2, so that the contact blades and the contact springs can be engaged or disengaged.
  • the contact blades 4A, 4B and the contact springs 6A, 6B each have spark horns 7.
  • the length of the contact blades (4A, 4B) corresponds in the longitudinal direction 1.8 to 2.5, in particular 2.2, the length of the contact springs (6A, 6B ) longitudinal.
  • Fig. 1 shows the circuit breaker in the closed position in which the contact blades and contact springs are engaged during Fig. 2 shows the open position of the circuit breaker in which the contact blades and contact springs are disengaged.
  • a cylindrical insulator receptacle 9 is pivotally mounted, in which an insulator 10 is inserted, on which an insulator cap 11 is seated, which has a tab 11A, to which the two contact springs 6A, 6B are attached.
  • the contact springs 6A, 6B, together with the insulator 10 and the insulator receptacle 9 and the insulator cap 11 form a unit which can be pivoted relative to the stationary contact blades 4A, 4B.
  • the two contact blades 4A, 4B are respectively fixed to the tab 12AA, 12BB of the insulator cap 12A, 12B of an insulator 13A, 13B.
  • the insulators 13A, 13B are in turn each inserted into a cylindrical insulator receptacle 14A, 14B.
  • the contact blades 4A, 4B and the contact springs 6A, 6B are each aligned with each other, so that engage the contact springs in the contact blades when pivoting the contact springs.
  • the drive unit 8 for pivoting the contact springs relative to the contact blades has a piston-cylinder arrangement 15, which is arranged above the base plate 2.
  • the piston-cylinder assembly 15 is arranged parallel to the base plate 2.
  • the piston-cylinder assembly tilts slightly relative to the base plate ( Fig. 2 ).
  • the piston 15A of the piston-cylinder assembly 15 is pivotally connected to two tabs 9A, 9B, which are integrally formed on the insulator receptacle 9 of the insulator 10 of the contact springs 6A, 6B.
  • the insulator receivers 14A, 14B of the insulators 13A, 13B of the contact blades 4A, 4B have tabs 14AA, 14AB, 14BA, 14BB which receive a rod 16 to which the cylinder 15B of the piston-cylinder assembly 15 is hingedly connected.
  • the necessary hydraulic lines for actuating the preferably hydraulically actuated piston-cylinder arrangement 15 are not shown in the figures.
  • the piston-cylinder arrangement 15 is located above the base plate 2 between the insulators of the contact blades 4A, 4B and the contact springs 6A, 6B. This gives the circuit breaker a compact design. Extensive parts which extend laterally beyond the base plate 2 and upwards or downwards are not present. Also, no trusses are required to which moving parts are to be attached.
  • FIGS. 3 and 4 show the trolley pole together with the disconnector from different views.
  • the overhead line mast 17 is a known metal mast.
  • the base plate 2 of the circuit breaker 1 is supported by post insulators 18 fixed to the top of the mast head 17A.
  • Mastfuß 17B is behind a flap 19 in the FIGS. 3 and 4 invisible hydraulic unit 20 for actuating the piston-cylinder arrangement.
  • the hydraulic unit 18 is connected to the piston-cylinder arrangement 15 via hydraulic lines guided in the mast.
  • the hydraulic unit may have an operating unit, not shown, for the electrical actuation of a hydraulic pump, not shown. But it is also possible that the hydraulic unit has a hand pump, not shown, to build up the hydraulic pressure in the hydraulic lines.

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

Description

Die Erfindung betrifft einen Trennschalter für Oberleitungen sowie einen Oberleitungsmast mit einem Trennschalter.The invention relates to a circuit breaker for overhead lines and a trolley pole with a circuit breaker.

Elektrische Hochspannungsschalter für Hochspannungsanlagen sind allgemein bekannt. Die bekannten Trennschalter für Oberleitungen von elektrifizierten Bahnen verfügen über Kontaktmesser und Kontaktfedern, die in Eingriff sind, wenn der Schalter geschlossen ist. Zum Öffnen des Schalters werden die Kontaktmesser und Kontaktfedern außer Eingriff gebracht.High voltage electrical switches for high voltage systems are well known. The known overhead contactor disconnectors of electrified webs have contact blades and contact springs which are engaged when the switch is closed. To open the switch, the contact blades and contact springs are disengaged.

Die Betätigung der bekannten Trennschalter für Oberleitungen erfolgt im Allgemeinen über ein mechanisches Gestänge, das den am Mastkopf angeordneten Trennschalter mit einem Hebel am Mastfuß verbindet. Nachteilig ist, dass die Montage des Trennschalters mit dem mechanischen Gestänge relativ aufwendig ist, da die Montage nicht nur die Verbindung, sondern auch die Justierung von beweglichen Teilen einschließt. Auch erfordert die Betätigung des Trennschalters über ein mechanisches Gestänge eine relativ ausladende Konstruktion des Trennschalters. Im Übrigen beeinträchtigt das mechanische Gestänge das äußere Erscheinungsbild des Oberleitungsmasts.The operation of the known circuit breaker for overhead lines is generally via a mechanical linkage that connects the arranged at the mast head disconnector with a lever on the mast base. The disadvantage is that the mounting of the circuit breaker with the mechanical linkage is relatively expensive, since the installation includes not only the connection, but also the adjustment of moving parts. Also, the operation of the circuit breaker via a mechanical linkage requires a relatively bulky construction of the circuit breaker. Moreover, the mechanical linkage affects the appearance of the trolley mast.

Ein Masttrennschalter ist aus DE-A-197 04 933 bekannt.A mast breaker is off DE-A-197 04 933 known.

Der Erfindung liegt die Aufgabe zugrunde, einen Trennschalter für Oberleitungen zu schaffen, der an einem Oberleitungsmast als kompakte Einheit einfach zu montieren ist, ohne das äußere Erscheinungsbild des Masts wesentlich zu beeinträchtigen. Darüber hinaus ist eine Aufgabe der Erfindung, einen Oberleitungsmast mit einem derartigen Trennschalter zu schaffen.The invention has for its object to provide a circuit breaker for overhead lines, which is easy to assemble on a trolley mast as a compact unit, without significantly affecting the appearance of the mast. In addition, an object of the invention to provide a trolley mast with such a circuit breaker.

Die Lösung dieser Aufgaben erfolgt erfindungsgemäß mit den Merkmalen der Patentansprüche 1 und 10. Vorteilhafte Ausführungsformen der Erfindung sind die Gegenstände der Unteransprüche.The solution of these objects is achieved according to the invention with the features of claims 1 and 10. Advantageous embodiments of the invention are the subject matters of the dependent claims.

Der erfindungsgemäße Trennschalter für Oberleitungen verfügt über eine Grundplatte, die mindestens ein Paar von Kontaktmessern und ein Paar von Kontaktfedern trägt. Bei einer Ausführungsform ist das Paar von Kontaktfedern schwenkbar und das Paar von Kontaktmessern ortsfest angeordnet, so dass durch Verschwenken des schwenkbaren Paars von Kontaktfedern die Kontaktmesser und die Kontaktfedern in Eingriff oder außer Eingriff gebracht werden können. Eine alternative Ausführungsform sieht die schwenkbare Anordnung der Kontaktmesser und die ortsfeste Anordnung der Kontaktfedern vor.The overhead line circuit breaker according to the invention has a base plate supporting at least a pair of contact blades and a pair of contact springs. In one embodiment, the pair of contact springs is pivotable and the pair of contact blades are stationary so that by pivoting the pivotable pair of contact springs, the contact blades and the contact springs can be engaged or disengaged. An alternative embodiment provides the pivotable arrangement of the contact blades and the stationary arrangement of the contact springs.

Zum Verschwenken des schwenkbaren Paars von Kontaktfedern bzw. Kontaktmessern dient eine Antriebseinheit, die eine oberhalb der Grundplatte angeordnete Kolben-Zylinder-Anordnung aufweist. Die Kolben-Zylinder-Anordnung steht einerseits mit dem schwenkbaren Paar von Kontaktfedern bzw. Kontaktmessern und andererseits mit der Grundplatte in Wirkverbindung, so dass durch Ein- bzw. Ausfahren des Kolbens der Kolben-Zylinder-Anordnung das schwenkbare Paar von Kontaktfedern bzw. Kontaktmessern verschwenkt wird. Die Betätigung der Kolben-Zylinder-Anordnung kann hydraulisch erfolgen, wobei die erforderlichen Hydraulikleitungen leicht in dem Mast unterzubringen sind, ohne das äußere Erscheinungsbild des Masts zu beeinträchtigen.For pivoting the pivotable pair of contact springs or contact blades is a drive unit having a piston arranged above the base plate-cylinder assembly. The piston-cylinder arrangement is on the one hand with the pivotable pair of contact springs or contact blades and on the other hand with the base plate in operative connection, so pivoted by retraction or extension of the piston of the piston-cylinder assembly, the pivotal pair of contact springs or contact blades becomes. The actuation of the piston-cylinder arrangement can be carried out hydraulically, wherein the required hydraulic lines are easy to accommodate in the mast, without affecting the external appearance of the mast.

Von Vorteil ist, dass die hydraulische Betätigung der Kontaktfedern bzw. Kontaktmesser nicht die Verbindung und Justierung von beweglichen Teilen erfordert. Der Trennschalter kann als vorgefertigte Einheit geliefert und montiert werden. Darüber hinaus arbeitet der Trennschalter weitgehend wartungs- und störungsfrei. Auch die Geräuschentwicklung ist bei der Betätigung des Trennschalters relativ gering. Im Übrigen sind die Hydraulikleitungen im Gegensatz zu dem mechanischen Gestänge nicht elektrisch leitend, wodurch auch die Sicherheit des Trennschalters noch erhöht wird.It is advantageous that the hydraulic actuation of the contact springs or contact blades does not require the connection and adjustment of moving parts. The circuit breaker can be delivered and assembled as a prefabricated unit. In addition, the circuit breaker works largely maintenance and trouble-free. The noise is relatively low when the circuit breaker is actuated. Incidentally, in contrast to the mechanical linkage, the hydraulic lines are not electrically conductive, which also increases the safety of the disconnector.

Ein weiterer Vorteil des erfindungsgemäßen Trennschalters liegt darin, dass auf die tragende Konstruktion des Trennschalters nur relativ geringe mechanische Kräfte wirken, so dass eine ausladende Tragkonstruktion, die hohen Kräften standhalten kann, nicht erforderlich ist. Daraus ergibt sich auch eine kompakte Bauform, die insbesondere in urbaner Umgebung beim Einsatz des Trennschalters im Nahverkehr das optische Erscheinungsbild des Mastes nicht wesentlich beeinträchtigt.Another advantage of the circuit breaker according to the invention is that act on the supporting structure of the circuit breaker only relatively small mechanical forces, so that a projecting support structure that can withstand high forces, is not required. This also results in a compact design that does not significantly affect the visual appearance of the mast, especially in urban environments when using the circuit breaker in local traffic.

Bei einer weiteren bevorzugten Ausführungsform ist die Kolben-Zylinder-Anordnung parallel zu der Grundplatte angeordnet, wenn die Kontaktmesser und die Kontaktfedern in Eingriff sind. Die Kolben-Zylinder-Anordnung kann aber auch gegenüber der Grundplatte geneigt sein, solange sich die Kolben-Zylinder-Anordnung oberhalb der Grundplatte befindet. Dabei ist entscheidend, dass neben oder unterhalb der Grundplatte befindliche Betätigungselemente nicht vorhanden sind. Folglich wirken die beim Schalten auftretenden Kräfte nur innerhalb des Trennschalters, so dass die den Trennschalter tragende Konstruktion nur das Eigengewicht des Trennschalters aufzunehmen hat.In a further preferred embodiment, the piston-and-cylinder arrangement is arranged parallel to the base plate when the contact blades and the contact springs are engaged. However, the piston-cylinder arrangement can also be inclined relative to the base plate as long as the piston-cylinder arrangement is located above the base plate. It is crucial that located next to or below the base plate actuators are not present. Consequently, the forces occurring during switching act only within the circuit breaker, so that the construction carrying the circuit breaker has to absorb only the dead weight of the circuit breaker.

Bei einer weiteren bevorzugten Ausführungsform sind die Kontaktmesser und die Kontaktfedern an Isolatorkappen befestigt, die auf Isolatoren aufgesetzt sind, die in Isolatoraufnahmen eingesetzt sind. Vorzugsweise sind die beiden Kontaktmesser bzw. Kontaktfedern des schwenkbaren Paars von Kontaktmessern bzw. Kontaktfedern in eine Isolatoraufnahme eines gemeinsamen Isolators und die Kontaktmesser bzw. Kontaktfedern des ortsfesten Paars von Kontaktmessern bzw. Kontaktfedern jeweils in Isolatoraufnahmen von getrennten Isolatoren eingesetzt. Die Kolben-Zylinder-Anordnung ist dann vorzugsweise einerseits an der Isolatoraufnahme des schwenkbaren Paars von Kontaktmessern bzw. Kontaktfedern befestigt und andererseits an den Isolatoraufnahmen des ortsfesten Paars von Kontaktmessern bzw. Kontaktfedern befestigt. Es ist aber auch möglich, dass die Kolben-Zylinder-Anordnung nicht an den Isolatoraufnahmen des ortsfesten Paars von Kontaktmessern bzw. Kontaktfedern, sondern an der Grundplatte befestigt ist. Die Kolben-Zylinder-Anordnung ist vorzugsweise sowohl gelenkig mit der Isolatoraufnahme des schwenkbaren Paars von Kontaktmessern bzw. Kontaktfedern als auch gelenkig mit den Isolatoraufnahmen des ortsfesten Paars von Kontaktmessern bzw. Kontaktfedern verbunden, so dass sich die Kolben-Zylinder-Anordnung gegenüber den Befestigungspunkten beim Öffnen und Schließen des Trennschalters gegenüber der Grundplatte verschwenken kann.In a further preferred embodiment, the contact blades and the contact springs are secured to insulator caps, which are placed on insulators, which are used in Isolatoraufnahmen. Preferably, the two contact blades or contact springs of the pivotable pair of contact blades or contact springs are inserted into an insulator receptacle of a common insulator and the contact blades or contact springs of the stationary pair of contact blades or contact springs respectively in insulator recordings of separate insulators. The piston-cylinder arrangement is then preferably attached on the one hand to the insulator receptacle of the pivotable pair of contact blades or contact springs and on the other hand attached to the insulator receptacles of the stationary pair of contact blades or contact springs. But it is also possible that the piston-cylinder assembly is not attached to the insulator receptacles of the stationary pair of contact blades or contact springs, but on the base plate. The piston-cylinder assembly is preferably both hingedly connected to the insulator receptacle of the pivotable pair of contact blades or contact springs and hingedly connected to the insulator receptacles of the stationary pair of contact blades or contact springs, so that the piston-cylinder arrangement with respect to the attachment points Can open and close the circuit breaker relative to the base plate.

Eine bevorzugte Ausfiihrungsform des Trennschalters sieht vor, dass das Paar von Kontaktmessern ortsfest und das Paar von Kontaktfedern schwenkbar an der Grundplatte isoliert befestigt sind, wobei die Kolben-Zylinder-Anordnung einerseits mit dem Paar von Kontaktfedern und andererseits mit der Grundplatte in Wirkverbindung steht. Dadurch wird erreicht, dass die Trennstrecke zwischen den ortsfesten Kontaktmessern relativ groß ist, wodurch die Sicherheit des Trennschalters erhöht wird.A preferred embodiment of the circuit breaker provides that the pair of contact blades are stationary and the pair of contact springs are pivotally secured to the base plate, the piston-cylinder assembly being in operative connection with both the pair of contact springs and the base plate. Thereby It is achieved that the separation distance between the fixed contact blades is relatively large, whereby the safety of the circuit breaker is increased.

Es ist bekannt, dass im Kurzschlussfall auf die Kontaktmesser oder Kontaktfedern relativ große Kräfte wirken können, die auf eine Streckung der Leitungsseile in Folge des Kurzschlussstroms zurückzuführen sind. Eine bevorzugte Ausführungsform des Trennschalters sieht daher vor, dass die Kontaktfedern schwenkbar und die Kontaktmesser ortsfest angeordnet sind, wobei die Länge der Kontaktfedern in Längsrichtung kleiner als die Länge der Kontaktmesser in Längsrichtung ist. Daraus ergibt sich, dass die Kontaktfedern relativ steif sind und die Kontaktmesser einen großen Hebelarm bilden. Wenn aufgrund der im Kurzschlussfall auftretenden Torsionskräfte die Kontaktmesser nach außen gedreht werden, können die Kontaktfedern aufgrund des relativ großen Hebelarms der Kontaktmesser die auftretenden Torsionskräfte besser aufnehmen. Darüber hinaus ist die relativ große Steifigkeit der Kontaktfedern bei der Aufnahme der Torsionskräfte von Vorteil..It is known that, in the event of a short circuit, relatively large forces can act on the contact blades or contact springs, which are due to an extension of the line cables as a result of the short-circuit current. A preferred embodiment of the circuit breaker therefore provides that the contact springs are pivotable and the contact blades are arranged stationary, wherein the length of the contact springs in the longitudinal direction is smaller than the length of the contact blades in the longitudinal direction. As a result, the contact springs are relatively stiff and the contact blades form a large lever arm. If, due to the torsional forces occurring in the event of a short circuit, the contact blades are turned outwards, the contact springs can better absorb the torsional forces that occur due to the relatively large lever arm of the contact blades. In addition, the relatively high stiffness of the contact springs in absorbing the torsional forces of advantage ..

Der erfindungsgemäße Oberleitungsmast zeichnet sich dadurch aus, dass der Mast über den erfindungsgemäßen Trennschalter verfügt. Bei einer bevorzugten Ausführungsform wird die Grundplatte des Trennschalters von Stützisolatoren getragen, die an einer Platte befestigt werden können. Da der erfindungsgemäße Trennschalter eine kompakte Einheit bildet und nur das Eigengewicht des Trennschalters aufzunehmen hat, können die Befestigungselemente des Trennschalters in ihren äußeren Abmessungen relativ klein bemessen sein.The trolley mast according to the invention is characterized in that the mast has the circuit breaker according to the invention. In a preferred embodiment, the base plate of the circuit breaker is supported by post insulators, which can be fixed to a plate. Since the circuit breaker according to the invention forms a compact unit and has to take only the weight of the circuit breaker, the fastening elements of the circuit breaker can be dimensioned relatively small in their outer dimensions.

Zur Betätigung der Kolben-Zylinder-Anordnung kann eine Hydraulik-Einheit am Mastfuß des Oberleitungsmasts vorgesehen sein. Diese Hydraulik-Einheit kann unterschiedlich ausgebildet sein. Beispielsweise ist es möglich, nur eine Hydraulik-Einheit für die Notbetätigung bei Stromausfall vorzusehen, die über eine manuelle Pumpe zum Aufbau des Hydraulikdrucks in den Hydraulikleitungen verfügt. Es kann aber auch eine Hydraulik-Einheit mit einer elektrischen Pumpe vorgesehen sein, um den Trennschalter automatisch betätigen zu können.To actuate the piston-cylinder arrangement, a hydraulic unit may be provided at the mast base of the overhead line mast. This hydraulic unit can be designed differently. For example, it is possible to provide only one hydraulic unit for the emergency operation in case of power failure, which has a manual pump to build up the hydraulic pressure in the hydraulic lines. But it can also be provided with a hydraulic pump with an electric pump to operate the circuit breaker automatically.

Im Folgenden wird ein Ausführungsbeispiel der Erfindung unter Bezugnahme auf die Zeichnungen näher erläutert.In the following an embodiment of the invention will be explained in more detail with reference to the drawings.

Es zeigen:

Fig. 1
den erfindungsgemäßen Trennschalter in perspektivischer Darstellung, wobei der Trennschalter geöffnet ist,
Fig. 2
den Trennschalter von Fig. 1, wobei der Trennschalter geschlossen ist,
Fig. 3
einen Oberleitungsmast mit dem Trennschalter von Fig. 1 in der Seitenansicht und
Fig. 4
den Oberleitungsmast von Fig. 1 in der Ansicht aus der Richtung des Pfeils IV.
Show it:
Fig. 1
the circuit breaker according to the invention in a perspective view, wherein the circuit breaker is open,
Fig. 2
the circuit breaker of Fig. 1 with the circuit breaker closed,
Fig. 3
a trolley mast with the disconnector of Fig. 1 in the side view and
Fig. 4
the trolley pole of Fig. 1 in the view from the direction of the arrow IV.

Der Trennschalter 1 weist eine Grundplatte 2 auf, die bei dem vorliegenden Ausführungsbeispiel ein Paar 3 von Kontaktmessern 4A, 4B und ein Paar 5 von Kontaktfedern 6A, 6B trägt. Die Kontaktmesser 4A, 4B sind ortsfest und die Kontaktfedern 6A, 6B sind schwenkbar isoliert an der Grundplatte 2 befestigt, so dass die Kontaktmesser und die Kontaktfedern in Eingriff oder außer Eingriff gebracht werden können. Die Kontaktmesser 4A, 4B und die Kontaktfedern 6A, 6B verfügen jeweils über Funkenhörner 7. Die Länge der Kontaktmesser (4A, 4B) entspricht in Längsrichtung 1,8 bis 2,5, insbesondere 2,2, der Länge der Kontaktfedern (6A, 6B) in Längsrichtung.The circuit breaker 1 has a base plate 2 which in the present embodiment carries a pair 3 of contact blades 4A, 4B and a pair 5 of contact springs 6A, 6B. The contact blades 4A, 4B are stationary and the contact springs 6A, 6B are pivotally mounted in isolation on the base plate 2, so that the contact blades and the contact springs can be engaged or disengaged. The contact blades 4A, 4B and the contact springs 6A, 6B each have spark horns 7. The length of the contact blades (4A, 4B) corresponds in the longitudinal direction 1.8 to 2.5, in particular 2.2, the length of the contact springs (6A, 6B ) longitudinal.

Die Fig. 1 zeigt den Trennschalter in der geschlossenen Stellung, in der die Kontaktmesser und Kontaktfedern in Eingriff sind, während Fig. 2 die geöffnete Stellung des Trennschalters zeigt, in der die Kontaktmesser und Kontaktfedern außer Eingriff sind.The Fig. 1 shows the circuit breaker in the closed position in which the contact blades and contact springs are engaged during Fig. 2 shows the open position of the circuit breaker in which the contact blades and contact springs are disengaged.

Nachfolgend wird die Antriebseinheit 8 zum Verschwenken der Kontaktfedern 6A, 6B im Einzelnen beschrieben.Hereinafter, the drive unit 8 for pivoting the contact springs 6A, 6B will be described in detail.

An der einen Seite der Grundplatte 2 ist schwenkbar eine zylindrische Isolatoraufnahme 9 befestigt, in die ein Isolator 10 eingesetzt ist, auf dem eine Isolatorkappe 11 sitzt, die eine Lasche 11A aufweist, an der die beiden Kontaktfedern 6A, 6B befestigt sind. Die Kontaktfedern 6A, 6B bilden zusammen mit dem Isolator 10 sowie der Isolatoraufnahme 9 und der Isolatorkappe 11 eine gegenüber den ortsfesten Kontaktmessern 4A, 4B verschwenkbare Einheit.On one side of the base plate 2, a cylindrical insulator receptacle 9 is pivotally mounted, in which an insulator 10 is inserted, on which an insulator cap 11 is seated, which has a tab 11A, to which the two contact springs 6A, 6B are attached. The contact springs 6A, 6B, together with the insulator 10 and the insulator receptacle 9 and the insulator cap 11 form a unit which can be pivoted relative to the stationary contact blades 4A, 4B.

Die beiden Kontaktmesser 4A, 4B sind jeweils an der Lasche 12AA, 12BB der Isolatorkappe 12A, 12B eines Isolators 13A, 13B befestigt. Die Isolatoren 13A, 13B sind wiederum jeweils in eine zylindrische Isolatoraufnahme 14A, 14B eingesetzt.The two contact blades 4A, 4B are respectively fixed to the tab 12AA, 12BB of the insulator cap 12A, 12B of an insulator 13A, 13B. The insulators 13A, 13B are in turn each inserted into a cylindrical insulator receptacle 14A, 14B.

Die Kontaktmesser 4A, 4B und die Kontaktfedern 6A, 6B sind jeweils aufeinander ausgerichtet, so dass beim Verschwenken der Kontaktfedern die Kontaktfedern in die Kontaktmesser greifen.The contact blades 4A, 4B and the contact springs 6A, 6B are each aligned with each other, so that engage the contact springs in the contact blades when pivoting the contact springs.

Die Antriebseinheit 8 zum Verschwenken der Kontaktfedern gegenüber den Kontaktmessern weist eine Kolben-Zylinder-Anordnung 15 auf, die oberhalb der Grundplatte 2 angeordnet ist. Wenn der Trennschalter geschlossen ist (Fig. 1), ist die Kolben-Zylinder-Anordnung 15 parallel zu der Grundplatte 2 angeordnet. Beim Öffnen des Trennschalters neigt sich die Kolben-Zylinder-Anordnung leicht gegenüber der Grundplatte (Fig. 2).The drive unit 8 for pivoting the contact springs relative to the contact blades has a piston-cylinder arrangement 15, which is arranged above the base plate 2. When the circuit breaker is closed ( Fig. 1 ), the piston-cylinder assembly 15 is arranged parallel to the base plate 2. When opening the circuit breaker, the piston-cylinder assembly tilts slightly relative to the base plate ( Fig. 2 ).

Der Kolben 15A der Kolben-Zylinder-Anordnung 15 ist gelenkig mit zwei Laschen 9A, 9B verbunden, die an die Isolatoraufnahme 9 des Isolators 10 der Kontaktfedern 6A, 6B angeformt sind. Auch die Isolatoraufnahmen 14A, 14B der Isolatoren 13A, 13B der Kontaktmesser 4A, 4B weisen Laschen 14AA, 14AB, 14BA, 14BB auf, die eine Stange 16 aufnehmen, mit der der Zylinder 15B der Kolben-Zylinder-Anordnung 15 gelenkig verbunden ist.The piston 15A of the piston-cylinder assembly 15 is pivotally connected to two tabs 9A, 9B, which are integrally formed on the insulator receptacle 9 of the insulator 10 of the contact springs 6A, 6B. Also, the insulator receivers 14A, 14B of the insulators 13A, 13B of the contact blades 4A, 4B have tabs 14AA, 14AB, 14BA, 14BB which receive a rod 16 to which the cylinder 15B of the piston-cylinder assembly 15 is hingedly connected.

Die erforderlichen Hydraulikleitungen zur Betätigung der vorzugsweise hydraulisch betätigbaren Kolben-Zylinder-Anordnung 15 sind in den Figuren nicht dargestellt. Durch Ein- und Ausfahren des Kolbens 15A der Kolben-Zylinder-Anordnung 15 wird der Trennschalter geöffnet bzw. geschlossen. Dabei ist von Vorteil, dass sämtliche Kräfte innerhalb des Trennschalters wirken. Die Kolben-Zylinder-Anordnung 15 befindet sich oberhalb der Grundplatte 2 zwischen den Isolatoren der Kontaktmesser 4A, 4B und der Kontaktfedern 6A, 6B. Dadurch erhält der Trennschalter eine kompakte Bauform. Ausladende Teile, die sich über die Grundplatte 2 seitlich hinaus und nach oben oder nach unten erstrecken, sind nicht vorhanden. Auch sind keine Traversen erforderlich, an denen bewegliche Teile zu befestigen sind.The necessary hydraulic lines for actuating the preferably hydraulically actuated piston-cylinder arrangement 15 are not shown in the figures. By retracting and extending the piston 15 A of the piston-cylinder assembly 15 of the Disconnector opened or closed. It is advantageous that all forces act within the circuit breaker. The piston-cylinder arrangement 15 is located above the base plate 2 between the insulators of the contact blades 4A, 4B and the contact springs 6A, 6B. This gives the circuit breaker a compact design. Extensive parts which extend laterally beyond the base plate 2 and upwards or downwards are not present. Also, no trusses are required to which moving parts are to be attached.

Die Figuren 3 und 4 zeigen den Oberleitungsmast zusammen mit dem Trennschalter aus unterschiedlichen Ansichten. Bei dem Oberleitungsmast 17 handelt es sich um einen bekannten Metallmast. Die Grundplatte 2 des Trennschalters 1 wird von Stützisolatoren 18 getragen, die an der Oberseite des Mastkopfs 17A befestigt sind. Im Mastfuß 17B befindet sich hinter einer Klappe 19 eine in den Figuren 3 und 4 nicht sichtbare Hydraulik-Einheit 20 zur Betätigung der Kolben-Zylinder-Anordnung. Die Hydraulik-Einheit 18 ist über im Mast geführte Hydraulikleitungen mit der Kolben-Zylinder-Anordnung 15 verbunden. Die Hydraulik-Einheit kann über eine nicht dargestellte Bedieneinheit zur elektrischen Betätigung einer nicht dargestellten Hydraulikpumpe verfügen. Es ist aber auch möglich, dass die Hydraulik-Einheit über eine nicht dargestellte Handpumpe zum Aufbau des Hydraulikdrucks in den Hydraulikleitungen verfügt.The FIGS. 3 and 4 show the trolley pole together with the disconnector from different views. The overhead line mast 17 is a known metal mast. The base plate 2 of the circuit breaker 1 is supported by post insulators 18 fixed to the top of the mast head 17A. In Mastfuß 17B is behind a flap 19 in the FIGS. 3 and 4 invisible hydraulic unit 20 for actuating the piston-cylinder arrangement. The hydraulic unit 18 is connected to the piston-cylinder arrangement 15 via hydraulic lines guided in the mast. The hydraulic unit may have an operating unit, not shown, for the electrical actuation of a hydraulic pump, not shown. But it is also possible that the hydraulic unit has a hand pump, not shown, to build up the hydraulic pressure in the hydraulic lines.

Claims (12)

  1. An isolating switch for overhead lines having
    a base plate (2) which carries at least one pair (3) of contact blades (4A, 4B) and one pair (5) of contact springs (6A, 6B), wherein
    one of the two pairs (3) of contact blades or contact springs is arranged in a stationary matter and the other pair (5) of contact blades or contact springs is pivotably arranged so that the contact blades and the contact springs can be brought into engagement or out of engagement by pivoting the pivotable pair of contact blades or contact springs, and
    a drive unit (8) for pivoting the pivotable pair (5) of contact blades or contact springs,
    characterized in that
    the drive unit (8) has a piston-cylinder arrangement (15) which is arranged above the base plate (2) and which, on the one hand, is actively connected to the pivotable pair (5) of contact blades or contact springs and, on the other, to the base plate (2), so that the pivotable pair (5) of contact blades or contact springs is pivoted by retracting or extending the piston (15A) of the piston-cylinder arrangement (15).
  2. The isolating switch as claimed in claim 1, characterized in that the piston-cylinder arrangement (15) is arranged parallel to the base plate (2) when the contact blades (4A, 4B) and the contact springs (6A, 6B) are engaged.
  3. The isolating switch as claimed in claim 1 or 2, characterized in that the contact blades (4A, 4B) and the contact springs (6A, 6B) are fixed to insulator caps (11, 13A, 13B) which are fitted onto insulators (10, 12A, 12B) which are fitted into insulator mountings (9, 14A, 14B).
  4. The isolating switch as claimed in claim 3, characterized in that the two contact blades (4A, 4B) or contact springs (6A, 6B) of the pivotable pair (5) of contact blades or contact springs are fitted into an insulator mounting (9) of a common insulator (10), and the contact blades or contact springs of the stationary pair (3) of contact blades or contact springs are in each case fitted into insulator mountings (13A, 13B) of separate insulators (12A, 12B).
  5. The isolating switch as claimed in claim 4, characterized in that, on the one hand, the piston-cylinder arrangement (15) is fixed to the insulator mounting (9) of the pivotable pair (5) of contact blades or contact springs and, on the other, to the insulator mountings (13A, 13B) of the stationary pair (3) of contact blades or contact springs.
  6. The isolating switch as claimed in claim 5, characterized in that, on the one hand, the piston (15A) of the piston-cylinder arrangement (15) is flexibly fixed to the insulator mounting (9) of the pivotable pair (5) of contact blades or contact springs, and the cylinder (15B) of the piston-cylinder arrangement (15) is flexibly fixed to the insulator mountings (13A, 13B) of the stationary pair (3) of contact blades or contact springs.
  7. The isolating switch as claimed in one of claims 1 to 6, characterized in that the pair (3) of contact blades is statically fixed and the pair (5) of contact springs is pivotably fixed to the base plate (2) in an insulating manner, wherein, on the one hand, the piston-cylinder arrangement (15) is actively connected to the pair (5) of contact springs and, on the other, to the base plate (2).
  8. The isolating switch as claimed in one of claims 1 to 7, characterized in that the length of the contact springs (6A, 6B) in the longitudinal direction is less than the length of the contact blades (4A, 4B) in the longitudinal direction.
  9. The isolating switch as claimed in one of claims 1 to 8, characterized in that the length of the contact blades (4A, 4B) in the longitudinal direction corresponds to 1.8 to 2.5, in particular 2.2, times the length of the contact springs (6A, 6B) in the longitudinal direction.
  10. An overhead line mast having an isolating switch (1) as claimed in one of claims 1 to 9.
  11. The overhead line mast as claimed in claim 10, characterized in that the base plate (2) of the isolating switch (1) is supported by supporting insulators (18) which are fixed to the mast head (17A) of the mast (17).
  12. The overhead line mast as claimed in claim 10 or 11, characterized in that a hydraulic unit is provided for actuating the piston-cylinder arrangement (15).
EP12003908.6A 2011-05-23 2012-05-18 Isolating circuits for overhead wires Active EP2528078B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201110102957 DE102011102957B4 (en) 2011-05-23 2011-05-23 Disconnector for overhead lines

Publications (2)

Publication Number Publication Date
EP2528078A1 EP2528078A1 (en) 2012-11-28
EP2528078B1 true EP2528078B1 (en) 2013-11-27

Family

ID=46458094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12003908.6A Active EP2528078B1 (en) 2011-05-23 2012-05-18 Isolating circuits for overhead wires

Country Status (4)

Country Link
EP (1) EP2528078B1 (en)
DE (1) DE102011102957B4 (en)
DK (1) DK2528078T3 (en)
ES (1) ES2448341T3 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1200915B (en) * 1963-11-02 1965-09-16 Ruhrtal Elek Zitaetsgesellscha Toggle disconnector
AT376058B (en) * 1983-02-03 1984-10-10 Siemens Ag Oesterreich TUNER SWITCH
DE19704933B4 (en) * 1997-02-10 2008-06-05 Bicc Holdings Gmbh Mast disconnecting switch
DE19955301B4 (en) * 1999-11-17 2007-11-15 Bicc Holdings Gmbh Switch Remote Drive
EP1164609A1 (en) * 2000-06-15 2001-12-19 ABB T&D Technology AG High voltage switchgear

Also Published As

Publication number Publication date
ES2448341T3 (en) 2014-03-13
EP2528078A1 (en) 2012-11-28
DE102011102957B4 (en) 2012-12-13
DK2528078T3 (en) 2014-02-17
DE102011102957A1 (en) 2012-11-29

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