WO1996016421A1 - High-voltage switching device - Google Patents

High-voltage switching device Download PDF

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Publication number
WO1996016421A1
WO1996016421A1 PCT/DE1995/001645 DE9501645W WO9616421A1 WO 1996016421 A1 WO1996016421 A1 WO 1996016421A1 DE 9501645 W DE9501645 W DE 9501645W WO 9616421 A1 WO9616421 A1 WO 9616421A1
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WO
WIPO (PCT)
Prior art keywords
switching
contact
switch
auxiliary
voltage
Prior art date
Application number
PCT/DE1995/001645
Other languages
German (de)
French (fr)
Inventor
Thomas Chyla
Karl Mascher
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1996016421A1 publication Critical patent/WO1996016421A1/en

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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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/166—Impedances connected with contacts the impedance being inserted only while closing the switch

Definitions

  • the invention relates to a high-voltage switching device with a high-voltage switch which has switching contacts and with an auxiliary switching device with auxiliary switching contacts, by means of which the high-voltage switch can be bridged by means of an on-resistance when switching on before contacting its switching contacts.
  • Such a high-voltage switching device is known, for example, from DE-OS 29 44 563.
  • the actual switching contact of the high-voltage switch is to be relieved when switched on by bridging beforehand by means of an on-resistance, in that overvoltages are reduced via the on-resistance.
  • the high-voltage switch is usually connected to the same drive as the auxiliary switching device, it is provided according to the prior art that in the course of the transmission mechanism of the drive movement there is an adjustment facility by means of which the time ratio of the switching processes of high-voltage switch and auxiliary switching devices can be set.
  • the high-voltage switching device is first installed in a constellation that appears to make sense, then a test circuit is carried out, the switching times of the individual elements being measured, and then the switching device is dismantled in order to adapt the elements of the drive transmission in accordance with the desired switching conditions.
  • a relatively large amount of assembly work results from the fact that the drive side of the high-voltage switching device must be dismantled for the adjustment.
  • the present invention is therefore based on the object of providing a simple setting option for the time interval between the contacting of the switching contacts and the contacting of the auxiliary switching contacts in a high-voltage switching device of the type mentioned at the beginning.
  • auxiliary switch contact opposite the drivable auxiliary switch contact of the auxiliary switching device and / or the switch contact opposite the drivable switch contact of the high-voltage switch for adjusting the distance ratio between the distance of the switch contacts and the distance of the auxiliary switch contacts by means of an adjusting device ⁇ tion is displaceable.
  • the contact of a high-voltage switch or an auxiliary switching device opposite the drivable contact is much easier to access than the drivable contacts, since the non-drivable contacts are only mounted in a fixed position and are not connected to a movable mechanism.
  • the energy store and the trigger mechanism for the switch are usually also arranged on the side of the switch on which the drivable switch contacts are located.
  • a housing cover can be provided which can be opened to adjust the spacing ratio.
  • the invention also avoids that by changing the geometric conditions on the drive side there is a reaction on the drive, which in turn could change the switching speed.
  • the invention can advantageously be designed in such a way that the adjusting device has a threaded rod which is connected to the displaceable switching contact / auxiliary switching contact and is secured against rotation and a corresponding rotatably mounted threaded nut penetrated by the threaded rod.
  • the adjusting device has a fixedly rotatably mounted threaded rod and a threaded nut connected to the displaceable switching contact / auxiliary switching contact and penetrated by the threaded rod and secured against rotation.
  • the alternatives described represent simple constructions of an adjusting device which are easy to operate and which reliably and permanently fix the distance ratio.
  • the invention can also be advantageously configured in that the displaceable auxiliary switch contact is supported by a fixed insulating tube which surrounds at least part of the on-resistance.
  • Such support by the insulating tube ensures that the auxiliary switch contact is radially stabilized in any position despite its sliding ability.
  • the invention also includes a method for adjusting the spacing ratio between the spacing of the switching contacts and the spacing of the auxiliary switching contacts of a high-voltage switching device of the type mentioned, wherein after the high-voltage switching device has been installed, in particular after carrying out a test circuit and measuring the Switching times of the high-voltage switch and the auxiliary switching device, the displaceable, non-drivable auxiliary switching contact and / or the displaceable, non-drivable switching contact is / are adjusted.
  • the figure schematically shows a high-voltage switching device consisting of a high-voltage switch and an auxiliary switching device, the non-drivable auxiliary switching contact of the auxiliary switching device being adjustable.
  • the figure shows a high-voltage switching device according to the invention with a high-voltage switch 1 and an auxiliary switching device 7.
  • the high-voltage switch 1 has two electrical connections 2, 3. Connected to the electrical connection is a drivable switch contact 4, which can be moved to a fixed contact 6 by a drive linkage 5 by means of the drive linkage 5 during the switching-on process by means of a drive which is not known.
  • the fixed, non-drivable contact 6 is designed as a tulip contact, while the drivable contact 4 is designed as a pin.
  • the drivable switch contact 4 is connected to the electrical connection 3 by means of a sliding contact 31.
  • the auxiliary switching device 7 is connected to the electrical connections 2, 3.
  • the drivable auxiliary switch contact 8 is also movable by means of the drive linkage 5 by the drive, not shown.
  • the drivable auxiliary switching contact 8 is connected to the electrical connection 3 by means of the sliding contact 9.
  • a field electrode 10 is provided which dielectrically shields the drivable auxiliary switch contact 8 in the switch-off position.
  • the auxiliary switching contact 8 of the auxiliary switching device 7 interacts with the auxiliary switching contact 11 opposite it.
  • the drivable switch contact 4 and the drivable auxiliary switch contact 8 are moved simultaneously by means of the linkage 5.
  • the contact between the auxiliary switch contact 8 and the auxiliary switch contact 11 takes place before the contact between the switch contact 4 and the switch contact 6 of the high-voltage switch 1.
  • the fixed auxiliary switch contact 11 is supported by means of a spring 12 against an end plate 13 and is movably guided in the axial direction within an electrode body 14. This ensures a sufficient contact pressure in the switch-on position.
  • An inner insulating tube 15 is firmly connected to the end plate 13 and passes through a plurality of resistance plates 16, 17, 18 of a resistance stack forming a switch-on resistance.
  • the resistance stack is provided on the outside by an insulating tube 19, which is fastened in an end fitting 20.
  • the resistance stack is held between two pressure plates 21, 22, of which the pressure plate 22 is supported against the end plate 13 by means of springs 23.
  • the inner insulating tube 15 is fastened to the pressure plate 21.
  • the pressure plate 21 has a nozzle 24, in which a threaded rod 25 protrudes.
  • the threaded rod 25 is connected to the connecting piece 24 in a rotationally secure manner by means of a pushed-through pin 26.
  • the pin 26 passes through bores in the connecting piece 24 and the threaded rod 25.
  • a holding plate 27 is connected, to which the valve 20 is fastened by means of screws 28.
  • a threaded nut 29 is mounted in a recess of the holding plate 27, the internal thread of which cooperates with the external thread of the threaded rod 25.
  • the threaded nut 29 can be fastened to the holding plate 27 by means of screws 30.
  • the screws 30 are first loosened, which prevent the threaded nut 20 from rotating. Thereafter, the threaded nut 29 is rotated in the desired sense, which causes the threaded pin 25 to move axially by a desired value. Then the threaded nut 29 is fixed by the screws 30.
  • threaded holes for the screws 30 are provided in the holding plate 27 at a certain pitch, for example at a 45 ° distance.
  • the distance between the switching contacts 4, 6 of the high-voltage switch and the distance between the auxiliary switching contacts 8, 11 of the auxiliary switching device is first set based on experience.
  • a circuit is then carried out under conditions which are as close as possible to the application, and the times at which the high-voltage switch 1 and the auxiliary switching device 7 are switched on are measured.
  • the switch on the side facing the auxiliary switching contact is then opened, the screws 30 are loosened, the threaded nut 29 is rotated and fastened again in accordance with a desired change in the switching time of the auxiliary switching device 7. Then the switch is closed again and is therefore in relation to the ratio of the switching times 7 of the high-voltage switch 1 and the auxiliary switching device 7 are adjusted.

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

Abstract

A high-voltage switching device has a power switch (1) and an auxiliary switching device (7) for a switch-on resistor (16, 17, 18). The auxiliary switching device (7) is arranged in such a way that the high-voltage switch (1) is bridged by the switch-on resistor before it reaches its switched-on position. In order to attain an optimum time interval between the switching moment of the high-voltage switch (1) and that of the auxiliary switching device (7), there is an adjusting device for altering the distance between the switching contacts (4, 6) or auxiliary switching contacts (8, 11). To avoid having to dismantle the driving mechanism for adjustment, the adjusting device is fitted on the opposite side to the drive.

Description

Beschreibungdescription
HochspannungsschalteinrichtungHigh voltage switching device
Die Erfindung bezieht sich auf eine Hochspannungsschaltein¬ richtung mit einem Hochspannungsschalter, der Schaltkontakte aufweist und mit einer Hilfsschalteinrichtung mit Hilfs¬ schaltkontakten, durch die der Hochspannungsschalter beim Einschaltvorgang vor Kontaktgabe seiner Schaltkontakte it- tels eines Einschaltwiderstandes überbrückbar ist.The invention relates to a high-voltage switching device with a high-voltage switch which has switching contacts and with an auxiliary switching device with auxiliary switching contacts, by means of which the high-voltage switch can be bridged by means of an on-resistance when switching on before contacting its switching contacts.
Eine derartige Hochspannungsschalteinrichtung ist beispiels¬ weise aus der DE-OS 29 44 563 bekannt. Bei einer solchen Hochspannungsschalteinrichtung soll der eigentliche Schalt- kontakt des Hochspannungsschalters beim Einschalten durch vorheriges Überbrücken mittels eines Einschaltwiderstandes entlastet werden, dadurch daß Oberspannungen über den Ein¬ schaltwiderstand abgebaut werden. Wichtig ist jedoch, daß die Schaltkontakte des Hochspannungsschalters und die Hilfs- schaltkontakte der Hilfsschalteinrichtung in einem bestimmten Zeitverhältnis zueinander schalten. Da üblicherweise der Hochspannungsschalter mit demselben Antrieb verbunden ist wie die Hilfsschalteinrichtung, ist gemäß dem Stand der Technik vorgesehen, daß im Zuge der ύbertragungsmechanik der Antriebsbewegung eine Verstellmöglichkeit vorhanden ist, durch die das Zeitverhältnis der Schaltvorgänge von Hochspan¬ nungsschalter und Hilfsschalteinrichtungen einstellbar ist.Such a high-voltage switching device is known, for example, from DE-OS 29 44 563. In such a high-voltage switching device, the actual switching contact of the high-voltage switch is to be relieved when switched on by bridging beforehand by means of an on-resistance, in that overvoltages are reduced via the on-resistance. However, it is important that the switching contacts of the high-voltage switch and the auxiliary switching contacts of the auxiliary switching device switch to one another in a certain time ratio. Since the high-voltage switch is usually connected to the same drive as the auxiliary switching device, it is provided according to the prior art that in the course of the transmission mechanism of the drive movement there is an adjustment facility by means of which the time ratio of the switching processes of high-voltage switch and auxiliary switching devices can be set.
Üblicherweise wird zunächst die Hochspannungsschalteinrich- tung in einer sinnvoll erscheinenden Konstellation montiert, danach eine Probeschaltung durchgeführt, wobei die SchaltZei¬ ten der einzelnen Elemente gemessen werden und dann wird die Schalteinrichtung demontiert, um die Elemente der Antriebs¬ übertragung entsprechend den gewünschten Schaltbedingungen anzupassen. Dabei ergibt sich ein relativ großer Montageaufwand dadurch, daß die Antriebsseite der Hochspannungsschalteinrichtung für die Justierung demontiert werden muß.Usually, the high-voltage switching device is first installed in a constellation that appears to make sense, then a test circuit is carried out, the switching times of the individual elements being measured, and then the switching device is dismantled in order to adapt the elements of the drive transmission in accordance with the desired switching conditions. A relatively large amount of assembly work results from the fact that the drive side of the high-voltage switching device must be dismantled for the adjustment.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, bei einer Hochspannungsschalteinrichtung der eingangs genann¬ ten Art eine einfache Einstellmöglichkeit für den zeitlichen Abstand zwischen der Kontaktgabe der Schaltkontakte und der Kontaktgabe der Hilfsschaltkontakte vorzusehen.The present invention is therefore based on the object of providing a simple setting option for the time interval between the contacting of the switching contacts and the contacting of the auxiliary switching contacts in a high-voltage switching device of the type mentioned at the beginning.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß der dem antreibbaren Hilfsschaltkontakt der Hilfsschalteinrichtung gegenüberliegende Hilfsschaltkontakt und/oder der dem an¬ treibbaren Schaltkontakt des Hochspannungsschalters gegen- überliegende Schaltkontakt zur Justierung des Abstandsver¬ hältnisses zwischen dem Abstand der Schaltkontakte und dem Abstand der Hilfsschaltkontakte mittels einer Justiervorrich¬ tung verschiebbar ist.The object is achieved according to the invention in that the auxiliary switch contact opposite the drivable auxiliary switch contact of the auxiliary switching device and / or the switch contact opposite the drivable switch contact of the high-voltage switch for adjusting the distance ratio between the distance of the switch contacts and the distance of the auxiliary switch contacts by means of an adjusting device ¬ tion is displaceable.
Der dem antreibbaren Kontakt gegenüberliegende Kontakt eines Hochspannungsschalters oder einer Hilfsschalteinrichtung ist wesentlich einfacher zugänglich, als die antreibbaren Kontak¬ te, da die nicht antreibbaren Kontakte lediglich ortsfest montiert und nicht mit einer beweglichen Mechanik verbunden sind. Üblicherweise ist auch der Kraftspeicher und die Auslö¬ semechanik für den Schalter auf der Seite des Schalters ange¬ ordnet, an der die antreibbaren Schaltkontakte liegen. Bei der vorliegenden Erfindung kann beispielsweise in der Verlän¬ gerung der Achse des Hochspannungsschalters oder der Hilfs- schalteinrichtung auf der dem Antrieb gegenüberliegende Seite ein Gehäusedeckel vorgesehen sein, der zur Justierung des Ab¬ standsverhältnisses geöffnet werden kann.The contact of a high-voltage switch or an auxiliary switching device opposite the drivable contact is much easier to access than the drivable contacts, since the non-drivable contacts are only mounted in a fixed position and are not connected to a movable mechanism. The energy store and the trigger mechanism for the switch are usually also arranged on the side of the switch on which the drivable switch contacts are located. In the present invention, for example, in the extension of the axis of the high-voltage switch or the auxiliary switching device on the side opposite the drive, a housing cover can be provided which can be opened to adjust the spacing ratio.
Durch die Erfindung wird außerdem vermieden, daß durch eine Änderung der geometrischen Verhältnisse auf der Antriebsseite eine Rückwirkung auf den Antrieb stattfindet, die ihrerseits die Schaltgeschwindigkeit verändern könnte.The invention also avoids that by changing the geometric conditions on the drive side there is a reaction on the drive, which in turn could change the switching speed.
Die Erfindung kann vorteilhaft dadurch ausgestaltet werden, daß die Justiervorrichtung eine mit dem verschiebbaren Schaltkontakt/Hilfsschaltkontakt verbundene, gegen Verdrehen gesicherte Gewindestange und eine entsprechende von der Gewindestange durchsetzte ortsfest gelagerte drehbare Ge¬ windemutter aufweist.The invention can advantageously be designed in such a way that the adjusting device has a threaded rod which is connected to the displaceable switching contact / auxiliary switching contact and is secured against rotation and a corresponding rotatably mounted threaded nut penetrated by the threaded rod.
Es kann ebenso vorteilhaft vorgesehen sein, daß die Justier¬ vorrichtung eine ortsfest drehbar gelagerte Gewindestange und eine mit dem verschiebbaren Schaltkontakt/Hilfsschaltkontakt verbundene, von der Gewindestange durchsetzte gegen Verdrehen gesicherte Gewindemutter aufweist.It can also be advantageously provided that the adjusting device has a fixedly rotatably mounted threaded rod and a threaded nut connected to the displaceable switching contact / auxiliary switching contact and penetrated by the threaded rod and secured against rotation.
Die beschriebenen Alternativen stellen einfache Konstruktio¬ nen einer Justiervorrichtung dar, die einfach zu betätigen sind und das Abstandsverhältnis zuverlässig dauerhaft fest- legen.The alternatives described represent simple constructions of an adjusting device which are easy to operate and which reliably and permanently fix the distance ratio.
Die Erfindung kann außerdem vorteilhaft dadurch ausgestaltet werden, daß der verschiebbare Hilfsschaltkontakt durch ein ortsfestes Isolierstoffröhr gestützt ist, das wenigstens ei- nen Teil des Einschaltwiderstandes umgibt.The invention can also be advantageously configured in that the displaceable auxiliary switch contact is supported by a fixed insulating tube which surrounds at least part of the on-resistance.
Durch eine solche Stützung durch das Isolierstoffrohr ist ge¬ währleistet, daß der Hilfsschaltkontakt trotz seiner Ver¬ schiebbarkeit in jeder Position radial stabilisiert ist.Such support by the insulating tube ensures that the auxiliary switch contact is radially stabilized in any position despite its sliding ability.
Die Erfindung umfaßt außerdem ein Verfahren zum Justieren des Abstandsverhältnisses zwischen dem Abstand der Schaltkontakte und dem Abstand der Hilfsschaltkontakte einer Hochspannungs- schalteinrichtung der eingangs genannten Art, wobei nach der Montage der Hochspannungsschalteinrichtung, insbesondere nach Durchführung einer Probeschaltung und Messung der Schaltzeiten des Hochspannungsschalters und der Hilfs¬ schalteinrichtung der verschiebbare, nicht antreibbare Hilfs¬ schaltkontakt und/oder der verschiebbare, nicht antreibbare Schaltkontakt justiert wird/werden.The invention also includes a method for adjusting the spacing ratio between the spacing of the switching contacts and the spacing of the auxiliary switching contacts of a high-voltage switching device of the type mentioned, wherein after the high-voltage switching device has been installed, in particular after carrying out a test circuit and measuring the Switching times of the high-voltage switch and the auxiliary switching device, the displaceable, non-drivable auxiliary switching contact and / or the displaceable, non-drivable switching contact is / are adjusted.
Im folgenden wird die Erfindung anhand eines Ausführungsbei- spiels in einer Zeichnung gezeigt und anschließend beschrie¬ ben.In the following, the invention is shown on the basis of an exemplary embodiment in a drawing and then described.
Dabei zeigt die Figur schematisch eine Hochspannungsschalt¬ einrichtung, bestehend aus einem Hochspannungsschalter und einer Hilfsschalteinrichtung, wobei der nicht antreibbare Hilfsschaltkontakt der Hilfsschalteinrichtung justierbar ist.The figure schematically shows a high-voltage switching device consisting of a high-voltage switch and an auxiliary switching device, the non-drivable auxiliary switching contact of the auxiliary switching device being adjustable.
Die Figur zeigt eine erfindungsgemäße Hochspannungsschaltein¬ richtung mit einem Hochspannungsschalter 1 und einer Hilfs¬ schalteinrichtung 7. Der Hochspannungsschalter 1 weist zwei elektrische Anschlüsse 2, 3 auf. Mit dem elektrischen An¬ schluß ist ein antreibbarer Schaltkontakt 4 verbunden, der beim Einschaltvorgang durch einen nicht dargestellten, an sich bekannten Antrieb mittels des Antriebsgestänges 5 auf einen feststehenden Kontakt 6 zu bewegbar ist. Der festste¬ hende, nicht antreibbare Kontakt 6 ist als Tulpenkontakt aus¬ gebildet, während der antreibbare Kontakt 4 als Stift ausge- bildet ist.The figure shows a high-voltage switching device according to the invention with a high-voltage switch 1 and an auxiliary switching device 7. The high-voltage switch 1 has two electrical connections 2, 3. Connected to the electrical connection is a drivable switch contact 4, which can be moved to a fixed contact 6 by a drive linkage 5 by means of the drive linkage 5 during the switching-on process by means of a drive which is not known. The fixed, non-drivable contact 6 is designed as a tulip contact, while the drivable contact 4 is designed as a pin.
Der antreibbare Schaltkontakt 4 ist mittels eines Gleitkon¬ taktes 31 mit dem elektrischen Anschluß 3 verbunden.The drivable switch contact 4 is connected to the electrical connection 3 by means of a sliding contact 31.
Parallel zu dem Hochspannungsschalter 1 ist die Hilfsschalt¬ einrichtung 7 mit den elektrischen Anschlüssen 2, 3 verbun¬ den. Dabei ist der antreibbare Hilfsschaltkontakt 8 ebenfalls mittels des Antriebsgestänges 5 durch den nicht dargestellten Antrieb bewegbar. Der antreibbare .Hilfsschaltkontakt 8 ist mittels des Gleit¬ kontaktes 9 mit dem elektrischen Anschluß 3 verbunden. Es ist eine Feldelektrode 10 vorgesehen, die den antreibbaren Hilfs¬ schaltkontakt 8 in der Ausschaltstellung dielektrisch ab- schirmt.In parallel to the high-voltage switch 1, the auxiliary switching device 7 is connected to the electrical connections 2, 3. The drivable auxiliary switch contact 8 is also movable by means of the drive linkage 5 by the drive, not shown. The drivable auxiliary switching contact 8 is connected to the electrical connection 3 by means of the sliding contact 9. A field electrode 10 is provided which dielectrically shields the drivable auxiliary switch contact 8 in the switch-off position.
In der Einschaltstellung wirkt der Hilfsschaltkontakt 8 der Hilfsschalteinrichtung 7 mit dem ihm gegenüberliegenden Hilfsschaltkontakt 11 zusammen.In the switched-on position, the auxiliary switching contact 8 of the auxiliary switching device 7 interacts with the auxiliary switching contact 11 opposite it.
Beim Einschalten der Hochspannungsschalteinrichtung werden gleichzeitig der antreibbare Schaltkontakt 4 und der antreib¬ bare Hilfsschaltkontakt 8 mittels des Gestänges 5 bewegt. Die Kontaktgabe zwischen dem Hilfsschaltkontakt 8 und dem Hilfs- schaltkontakt 11 findet jedoch vor der Kontaktgabe zwischen dem Schaltkontakt 4 und dem Schaltkontakt 6 des Hochspan¬ nungsschalters 1 statt.When the high-voltage switching device is switched on, the drivable switch contact 4 and the drivable auxiliary switch contact 8 are moved simultaneously by means of the linkage 5. However, the contact between the auxiliary switch contact 8 and the auxiliary switch contact 11 takes place before the contact between the switch contact 4 and the switch contact 6 of the high-voltage switch 1.
Der feststehende Hilfsschaltkontakt 11 ist mittels einer Fe- der 12 gegen eine Endplatte 13 abgestützt und innerhalb eines Elektrodenkörpers 14 in axialer Richtung beweglich geführt. Dadurch ist ein genügender Kontaktdruck in der Einschaltstel¬ lung gewährleistet.The fixed auxiliary switch contact 11 is supported by means of a spring 12 against an end plate 13 and is movably guided in the axial direction within an electrode body 14. This ensures a sufficient contact pressure in the switch-on position.
Mit der Endplatte 13 ist ein inneres Isolierrohr 15 fest ver¬ bunden, das mehrere Widerstandsplatten 16, 17, 18 eines einen Einschalt-Widerstand bildenden Widerstandsstapels durchsetzt.An inner insulating tube 15 is firmly connected to the end plate 13 and passes through a plurality of resistance plates 16, 17, 18 of a resistance stack forming a switch-on resistance.
Der Widerstandsstapel ist außen von einem Isolierrohr 19 u - geben, das in einer Endarmatur 20 befestigt ist. Der Wider¬ standsstapel ist zwischen zwei Druckplatten 21, 22 gehalten, von denen die Druckplatte 22 mittels Federn 23 gegen die End¬ platte 13 abgestützt ist.The resistance stack is provided on the outside by an insulating tube 19, which is fastened in an end fitting 20. The resistance stack is held between two pressure plates 21, 22, of which the pressure plate 22 is supported against the end plate 13 by means of springs 23.
Das innere Isolierstoffrohr 15 ist an der Druckplatte 21 be¬ festigt. Die Druckplatte 21 weist einen Stutzen 24 auf, in den eine Gewindestange 25 hineinragt. Die Gewindestange 25 ist mit dem Stutzen 24 mittels eines durchgeschobenen Stiftes 26 verdrehsicher verbunden. Der Stift 26 durchsetzt Bohrungen in dem Stutzen 24 und der Gewindestange 25.The inner insulating tube 15 is fastened to the pressure plate 21. The pressure plate 21 has a nozzle 24, in which a threaded rod 25 protrudes. The threaded rod 25 is connected to the connecting piece 24 in a rotationally secure manner by means of a pushed-through pin 26. The pin 26 passes through bores in the connecting piece 24 and the threaded rod 25.
Mit dem Stutzen 24 ist eine Halteplatte 27 verbunden, an der auch die Armatur 20 mittels Schrauben 28 befestigt ist. In einer Ausnehmung der Halteplatte 27 ist eine Gewindemutter 29 gelagert, deren Innengewinde mit dem Außengewinde der Gewin- destange 25 zusammenwirkt. Die Gewindemutter 29 ist mittels Schrauben 30 an der Halteplatte 27 befestigbar.With the nozzle 24, a holding plate 27 is connected, to which the valve 20 is fastened by means of screws 28. A threaded nut 29 is mounted in a recess of the holding plate 27, the internal thread of which cooperates with the external thread of the threaded rod 25. The threaded nut 29 can be fastened to the holding plate 27 by means of screws 30.
Zur Justage des Hilfsschaltkontakts 11 werden zunächst die Schrauben 30 gelöst, die eine Verdrehung der Gewindemutter 20 verhindern. Danach wird die Gewindemutter 29 in dem gewünsch¬ ten Sinn verdreht, wodurch eine Axialbewegung des Gewinde¬ stiftes 25 um einen gewünschten Wert bewirkt wird. Danach wird die Gewindemutter 29 durch die Schrauben 30 fixiert. Hierzu sind in der Halteplatte 27 in einer bestimmten Teilung Gewindebohrungen für die Schrauben 30, beispielsweise im 45°- Abstand, vorgesehen.To adjust the auxiliary switching contact 11, the screws 30 are first loosened, which prevent the threaded nut 20 from rotating. Thereafter, the threaded nut 29 is rotated in the desired sense, which causes the threaded pin 25 to move axially by a desired value. Then the threaded nut 29 is fixed by the screws 30. For this purpose, threaded holes for the screws 30 are provided in the holding plate 27 at a certain pitch, for example at a 45 ° distance.
Bei der Montage der erfindungsgemäßen Hochspannungsschaltein¬ richtung wird zunächst nach Erfahrungswerten der Abstand zwi- sehen den Schaltkontakten 4, 6 des Hochspannungsschalters und der Abstand zwischen den Hilfsschaltkontakten 8, 11 der Hilfsschalteinrichtung eingestellt. Danach wird eine Schal¬ tung unter möglichst anwendungsnahen Bedingungen durchge¬ führt, und es werden die Einschaltzeitpunkte des Hochspan- nungsschalters 1 und der Hilfsschalteinrichtung 7 gemessen. Danach wird der Schalter auf der dem Hilfsschaltkontakt zu¬ gewandten Seite geöffnet, es werden die Schrauben 30 gelöst, die Gewindemutter 29 entsprechend einer gewünschten Änderung der Schaltzeit der Hilfsschalteinrichtung 7 verdreht und wie- der befestigt. Danach wird der Schalter erneut geschlossen und ist somit in bezug auf das Verhältnis der Schaltzeiten 7 des Hochspannungsschalters 1 und der Hilfsschalteinrichtung 7 justiert. When installing the high-voltage switching device according to the invention, the distance between the switching contacts 4, 6 of the high-voltage switch and the distance between the auxiliary switching contacts 8, 11 of the auxiliary switching device is first set based on experience. A circuit is then carried out under conditions which are as close as possible to the application, and the times at which the high-voltage switch 1 and the auxiliary switching device 7 are switched on are measured. The switch on the side facing the auxiliary switching contact is then opened, the screws 30 are loosened, the threaded nut 29 is rotated and fastened again in accordance with a desired change in the switching time of the auxiliary switching device 7. Then the switch is closed again and is therefore in relation to the ratio of the switching times 7 of the high-voltage switch 1 and the auxiliary switching device 7 are adjusted.

Claims

Patentansprüche claims
1. Hochspannungsschalteinrichtung mit einem Hochspannungs- schalter (1), der Schaltkontakte (4, 6) aufweist und mit ei- ner Hilfsschalteinrichtung (7) mit Hilfsschaltkontakten (8, 11) , durch die der Hochspannungsschalter (1) beim Einschalt¬ vorgang vor Kontaktgabe seiner Schaltkontakte (4, 6) mittels eines Einschaltwiderstandes überbrückbar ist, d a d u r c h g e k e n n z e i c h n e t , daß der dem antreibbaren Hilfsschaltkontakt (8) der Hilfs¬ schalteinrichtung (7) gegenüberliegende Hilfsschaltkontakt (11) und/oder der dem antreibbaren Schaltkontakt (4) des Hochspannungsschalters (1) gegenüberliegende Schaltkontakt (6) zur Justierung des Abstandsverhältnisses zwischen dem Abstand der Schaltkontakte (4, 6) und dem Abstand der Hilfs¬ schaltkontakte (8, 11) mittels einer Justiervorrichtung ver¬ schiebbar ist.1. High-voltage switching device with a high-voltage switch (1) which has switching contacts (4, 6) and with an auxiliary switching device (7) with auxiliary switching contacts (8, 11), through which the high-voltage switch (1) during the switch-on process before contact of its switching contacts (4, 6) can be bridged by means of a switch-on resistor, characterized in that the auxiliary switching contact (11) opposite the drivable auxiliary switching contact (8) of the auxiliary switching device (7) and / or the drivable switching contact (4) of the high-voltage switch (1) opposite switching contact (6) for adjusting the distance ratio between the distance of the switching contacts (4, 6) and the distance of the auxiliary switching contacts (8, 11) can be moved by means of an adjusting device.
2. Hochspannungsschalteinrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß die Justiervorrichtung eine mit dem verschiebbaren Schaltkon¬ takt (6) /Hilfsschaltkontakt (11) verbundene, gegen Verdrehen gesicherte Gewindestange (25) und eine entsprechende von der Gewindestange (25) durchsetzte, ortsfest gelagerte drehbare Gewindemutter (29) aufweist.2. High-voltage switching device according to claim 1, characterized in that the adjusting device with a movable Schaltkon¬ contact (6) / auxiliary switch contact (11) connected, secured against rotation threaded rod (25) and a corresponding through the threaded rod (25), fixed, rotatably mounted Has threaded nut (29).
3. Hochspannungsschalteinrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß die Justiervorrichtung eine ortsfest drehbar gelagerte Gewin- destange und eine mit dem verschiebbaren Schaltkontakt3. High-voltage 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 that the adjusting device has a fixedly rotatably mounted threaded rod and one with the sliding switch contact
(6) /Hilfsschaltkontakt (11) verbundene, von der Gewindestange durchsetzte, gegen Verdrehen gesicherte Gewindemutter auf¬ weist.(6) / auxiliary switching contact (11) connected, through which the threaded rod, secured against rotation, has a nut.
4. Hochspannungsschalteinrichtung nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , daß der verschiebbare Hilfsschaltkontakt (11) durch ein ortsfe¬ stes Isolierstoffrohr (19) gestützt ist, das wenigstens einen Teil des Einschaltwiderstandes (16, 17 18) umgibt.4. High-voltage switching device according to claim 1 or 2, characterized in that the displaceable auxiliary switching contact (11) is supported by a stationary insulating tube (19) which surrounds at least part of the on-resistance (16, 17 18).
5. Verfahren zum Justieren des Abstandsverhältnisses zwischen dem Abstand der Schaltkontakte (4, 6) und dem Abstand der Hilfsschaltkontakte (8, 11) einer Hochspannungsschaltein¬ richtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß nach der Montage der Hochspannungsschalteinrichtung (1), ins¬ besondere nach Durchführung einer Probeschaltung und Messung der Schaltzeiten des Hochspannungsschalters und der Hilfs¬ schalteinrichtung (7) der verschiebbare Hilfsschaltkontakt (11) und/oder der verschiebbare Schaltkontakt (6) justiert wird/werden. 5. A method for adjusting the distance ratio between the distance of the switching contacts (4, 6) and the distance of the auxiliary switching contacts (8, 11) of a high-voltage switching device according to claim 1, characterized in that after the assembly of the high-voltage switching device (1), in particular after carrying out a test circuit and measuring the switching times of the high-voltage switch and the auxiliary switching device (7), the displaceable auxiliary switching contact (11) and / or the displaceable switching contact (6) is / are adjusted.
PCT/DE1995/001645 1994-11-22 1995-11-15 High-voltage switching device WO1996016421A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4443184.8 1994-11-22
DE19944443184 DE4443184C1 (en) 1994-11-22 1994-11-22 Power circuit breaker with switching-in resistance

Publications (1)

Publication Number Publication Date
WO1996016421A1 true WO1996016421A1 (en) 1996-05-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1995/001645 WO1996016421A1 (en) 1994-11-22 1995-11-15 High-voltage switching device

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WO (1) WO1996016421A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19547098A1 (en) * 1995-12-16 1997-06-19 Asea Brown Boveri Power switch with arc-quenching chamber and switch-on resistor
DE19915978A1 (en) * 1999-04-09 2000-10-12 Abb Patent Gmbh Method for measuring contact wear of power switch of medium or high voltage by comparing of distance S1 to contact point of movable contact piece with initial contact of current and target time diagram
CN107221472B (en) * 2017-05-05 2019-08-13 平高集团有限公司 Resistor disc crimping structure and breaker

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1912776A (en) * 1930-03-20 1933-06-06 Cutler Hammer Inc Electric switch
GB2047001A (en) * 1979-03-28 1980-11-19 Northern Eng Ind Electric switch
DE2944563A1 (en) * 1979-10-12 1981-04-23 BBC AG Brown, Boveri & Cie., Baden, Aargau HIGH VOLTAGE CIRCUIT BREAKERS
US4421962A (en) * 1980-07-23 1983-12-20 Alsthom-Atlantique Compressed gas circuit-breaker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1912776A (en) * 1930-03-20 1933-06-06 Cutler Hammer Inc Electric switch
GB2047001A (en) * 1979-03-28 1980-11-19 Northern Eng Ind Electric switch
DE2944563A1 (en) * 1979-10-12 1981-04-23 BBC AG Brown, Boveri & Cie., Baden, Aargau HIGH VOLTAGE CIRCUIT BREAKERS
US4421962A (en) * 1980-07-23 1983-12-20 Alsthom-Atlantique Compressed gas circuit-breaker

Also Published As

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