EP0634048A1 - Gas-insulated switching unit with a multi-pole vacuum switch and a multipole load-break switch. - Google Patents

Gas-insulated switching unit with a multi-pole vacuum switch and a multipole load-break switch.

Info

Publication number
EP0634048A1
EP0634048A1 EP93907775A EP93907775A EP0634048A1 EP 0634048 A1 EP0634048 A1 EP 0634048A1 EP 93907775 A EP93907775 A EP 93907775A EP 93907775 A EP93907775 A EP 93907775A EP 0634048 A1 EP0634048 A1 EP 0634048A1
Authority
EP
European Patent Office
Prior art keywords
switch
front wall
container
vacuum
gas
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
EP93907775A
Other languages
German (de)
French (fr)
Other versions
EP0634048B1 (en
Inventor
Helmut Spaeck
Gerhard Simon
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 EP0634048A1 publication Critical patent/EP0634048A1/en
Application granted granted Critical
Publication of EP0634048B1 publication Critical patent/EP0634048B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

Definitions

  • the invention relates to a gas-insulated switchgear assembly with a gas-filled container and a multi-pole vacuum switch arranged in the container with the horizontal position of its vacuum interrupters and with a multi-pole three-position switch disconnector arranged with its switch shaft horizontal below the vacuum switch and on a front wall of the Drive devices arranged for the container for the vacuum switch and the load disconnector, furthermore with outlet bushings arranged below the load disconnector on the front wall.
  • a switchgear of this type has become known from DE-A-39 15 948. This arrangement provides favorable conditions for making the electrical connections between the vacuum switch and the load break switch. Likewise, the busbars can be conveniently installed, which enter and exit on the side walls of the container and can therefore be inserted directly into adjoining switch panels.
  • the object of the invention is to simplify the mechanical construction of the drive connections without disadvantage for the electrical connections.
  • vacuum interrupters are arranged with longitudinal axes oriented at right angles to the front wall of the container and that the switch-disconnector is arranged with an axis of rotation which is likewise horizontal, but is oriented parallel to the front wall of the container.
  • each vacuum interrupter is assigned an actuating rod which is inserted into the container in a sealed manner by means of a bellows.
  • the connection devices of the switch disconnector come into a position which enables a connection without intersection with the outgoing feedthroughs provided on the front wall of the container.
  • busbar bushings in the side walls of the container can be dispensed with without disadvantage.
  • These bushings can also be arranged on the front wall of the container and connected to the switch disconnector without crossing.
  • Containers of a multi-panel switchgear can then be set up side by side without any lateral spacing, the busbars being able to be laid in front of the containers in a suitable manner and adaptable if necessary.
  • the load-break switch can be actuated by an inner pivoting lever which interacts with its switch shaft and which, on its end facing the front wall of the container, engages an outer, has a fork opening in a gas-tight manner sealed to the front wall.
  • FIG. 1 shows a section of a medium-voltage switchgear with a vacuum circuit breaker and a three-position switch-disconnector, as well as the associated drive devices and the electrical bushings.
  • FIG. 2 shows the side-by-side arrangement of three vacuum interrupters of the vacuum circuit breaker according to FIG. 1. Only the middle of three upper insulating plates is shown to make the parts underneath visible.
  • the control panel 1 shown in the figures has a container 2 made of sheet steel which is closed without access and which comprises a vacuum power switch, designated as a whole as 3, with a drive device 4 and a three-position switch disconnector 5 with an associated further drive device 6 .
  • the container 2 is grounded during operation and contains a suitable insulating gas, for example sulfur hexafluoride (SF,).
  • SF sulfur hexafluoride
  • the vacuum circuit breaker 3 has a three-pole design and accordingly has three vacuum interrupters 12, which can each be actuated by the drive device 4 for switching on and off by means of a coupling device 14 constructed in a straight line and passing through a front wall 13 of the container 1.
  • the three vacuum interrupters 12 lie next to one another with a horizontal longitudinal axis and are fastened between insulating plates in a manner still to be explained.
  • the load break switch 5 arranged below the vacuum circuit breaker 3 is arranged with an axis of rotation running parallel to the front wall 13 of the container 2.
  • the three poles of the load break switch 5 are therefore one behind the other in FIG. 1, as are the three vacuum interrupters 12. Therefore, the connections between the two switches can be easily made without crossing the busbars 15 provided for this purpose.
  • feeder busbars 16 are laid vertically between the bushings 11 and the vacuum interrupters 12 without crossing.
  • the bushings 11 are arranged in steps in height in order to facilitate the connection of busbars.
  • the busbars can be connected from the front without having to have access to the interior of the container.
  • each vacuum interrupter 12 is assigned an upper insulating plate 17, which is attached to angular holding members 20.
  • the holding members 20 are attached to the front wall 13 and an opposite rear wall 21 of the container 2.
  • a rear carrier 22 and a front carrier 23 are connected to each upper insulating plate 17, between which the vacuum interrupter is arranged.
  • Insulating plate 17 with the brackets 22 and 23 and the vacuum switch tube 12 form a non-functional, but mechanically coherent and assembly-ready unit which, as long as the container 2 is still open, can be easily hung and fastened to the holding members 20.
  • Another component of the circuit breaker 3 are two lower insulating plates 24 and 25 which extend transversely to the upper insulating plates 17 and which, like this, are fastened to holding members 26 which in turn are fastened to the walls of the container 2.
  • the insulating plate 24 is common for the rear ends of the vacuum interrupters 12 connected to the carriers 22, while the insulating plate 25 is common for front ends of the vacuum interrupters 12 connected to the carriers 23.
  • This arrangement of the insulating plates 17, 24 and 25 leads to a good stiffening against the high forces which short-circuit currents can cause due to the relatively small mutual spacings of the vacuum interrupters in the insulating gas, while at the same time the circulation of the insulating gas in the container 2 in the region of the Vacuum interrupters 12 is less than when using a single lower insulating plate.
  • the lower holding members 26 are expediently attached to opposite side walls 28 and 29 of the container 2. If a common lower insulating plate is used instead of the individual lower insulating plates 24 and 25, a different arrangement of the holding members 26 is also possible, for example both on the rear wall 21 and on the side walls 28 and 29. It is also recommended to use one for all vacuum interrupters 12 common lower insulating plate to be dimensioned so that it is just like the lower right Insulating plate 25 does not protrude significantly beyond the connecting device 30 in the direction of the front wall 13, so that the elements of the coupling device 14 are easily accessible from below during assembly and the insulating gas can circulate.
  • connection rails 27 which are led down through openings in the lower insulating plates 24 and are connected there to the busbars 16.
  • the front lower insulating plates 25 each carry a connection device 30 for the busbars 15 and a flexible current band 31, which establishes the electrical connection with the movable connection bolt 32 of the vacuum interrupter 12.
  • each of the vacuum interrupters 12 is connected to the drive device 4 by a coupling device 14.
  • a clamping device 33, an insulating body 34 and an actuating rod 35 in connection with a bellows 36 are provided as components of the coupling device 14.
  • the bellows 36 is fastened at one end in the front wall 13 of the container 2 and at its opposite end, which projects into the container 2, is connected to the actuating rod 35.
  • a lever gear 37 is connected to the end of the actuating rod 35 which is accessible on the outside of the container 2 and to which a tension spring 40 serving as a contact force spring and as an opening spring belongs.
  • the lever mechanism can preferably have the structure described in DE-A-34 14 016.
  • the lever gears 37 corresponding to the number of poles are jointly actuated in a known manner by the drive device 4 with a driving force to switch on the vacuum interrupters. strikes.
  • the drive device 4 is unlatched, whereupon the tension spring 40 acts as a switch-off spring and can switch off the vacuum interrupters 12 against the gas pressure existing in the container.
  • the switch panel 1 includes a three-position switch-disconnector 5, for example of the type according to DE-C-33 04 272.
  • the circuit of the circuit-breaker 3 and the load-break switch 5 can in particular be A-39 15 949 can be selected in order to be able to control short-circuit currents without interlocking the circuit breaker and the load-break switch.
  • a switch shaft 41 which is common to all poles of the load-break switch 5 is arranged horizontally and parallel to the front wall 13 of the container 2.
  • the Antriebsvorrich ⁇ device 6 for the load break switch 5 works with the switch shaft 41 by means of another, generally designated 42 coupling device, which is designed such that the installation of the load break switch 5 in the container 2 can be carried out with little effort.
  • the coupling device 42 as is known per se, has a bellows 43, which is fastened with one end in a gas-tight manner in the front wall 13 of the container 2.
  • the bellows 43 is not used to initiate a linear movement, but rather a pivoting movement. This is done by an outer pivot lever 44, the pivot bearing of which is arranged approximately in the plane of the front wall 13. At the inner end of the outer pivot lever 44 there is a driver pin 45 for a fork opening 46 of an inner pivot lever 47, which is mounted approximately centrally on a bearing pin 50. At the other At the end of the inner pivot lever 47, the switch shaft 41 is actuated by a deflecting gear 51.
  • the inner pivot lever 47 and the deflecting gear 51 are expediently fastened to the load-break switch 5 in such a way that this unit by simply pushing the fork opening 46 onto the driver bolt 45 with the outer pivot lever 44 and thus with the drive device 6 for the load-break switch 5 can be coupled. Adjustment and adjustment work can largely be dispensed with.

Abstract

A gas-insulating switching unit includes a gas-filled housing containing a multi-pole vacuum switch and a three-position circuit breaker arranged below it. The vacuum switch is arranged so that the longitudinal axes of the horizontally positioned vacuum switching tubes are perpendicular to the front wall of the housing. The switch shaft of the circuit breaker is parallel to the front wall of the housing. Actuating rods are sealed against the front wall be bellows and can be used to operate the vacuum switching tubes. The circuit breaker is operated by a drive device via two pivoting levers that can be coupled by means of a fork opening.

Description

Gasisolierte Schaltanlage mit einem mehrpoligenGas-insulated switchgear with a multi-pole
Vakuumschalter und einem mehrpoligen LasttrennschalterVacuum switch and a multi-pole switch disconnector
Die Erfindung betrifft eine gasisolierte Schaltanlage mit einem gasgefüllten Behälter und einem in dem Behälter mit horizontaler Lage seiner Vakuumschaltröhren angeordneten mehrpoligen Vakuumschalter sowie mit einem mit horizonta¬ ler Lage seiner Schalterwelle unterhalb des Vakuumschal¬ ters angeordneten mehrpoligen Dreistellungs-Lasttrenn- Schalter und an einer Frontwand des Behälters angeordneten Antriebsvorrichtungen für den Vakuumschalter und den Last¬ trennschalter, ferner mit unterhalb des Lasttrennschalters an der Frontwand angeordneten Abgangsdurchführungen.The invention relates to a gas-insulated switchgear assembly with a gas-filled container and a multi-pole vacuum switch arranged in the container with the horizontal position of its vacuum interrupters and with a multi-pole three-position switch disconnector arranged with its switch shaft horizontal below the vacuum switch and on a front wall of the Drive devices arranged for the container for the vacuum switch and the load disconnector, furthermore with outlet bushings arranged below the load disconnector on the front wall.
Eine Schaltanlage dieser Art ist durch die DE-A-39 15 948 bekanntgeworden. Bei dieser Anordnung ergeben sich günstige Bedingungen für die Anbringung der elektrischen Verbindungen zwischen dem Vakuumschalter und dem Lasttrennschalter. Ebenso sind die Sammelschienen günstig verlegbar, die an den Seitenwänden des Behälters ein- und austreten und daher unmittelbar in seitlich anschließende Schaltfelder einführbar sind.A switchgear of this type has become known from DE-A-39 15 948. This arrangement provides favorable conditions for making the electrical connections between the vacuum switch and the load break switch. Likewise, the busbars can be conveniently installed, which enter and exit on the side walls of the container and can therefore be inserted directly into adjoining switch panels.
Es zeigt sich jedoch, daß die mechanischen Verbindungen zwischen den an der Frontwand des Behälters befindlichen Antriebsvorrichtungen und den durch diese zu betätigenden Schaltgeräten verhältnismäßig kompliziert sind. Der Erfin¬ dung liegt die Aufgabe zugrunde, ohne Nachteil für die elektrischen Verbindungen den mechanischen Aufbau der Antriebsverbindungen zu vereinfachen.It turns out, however, that the mechanical connections between the drive devices located on the front wall of the container and the switching devices to be actuated by them are relatively complicated. The object of the invention is to simplify the mechanical construction of the drive connections without disadvantage for the electrical connections.
Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß die Vakuumschaltröhren mit rechtwinklig zur Frontwand des Behälters ausgerichteten Längsachsen angeordnet sind und daß der Lasttrennschalter mit gleichfalls horizonta¬ ler, jedoch parallel zur Frontwand des Behälters ausge¬ richteter Drehachse angeordnet ist.This object is achieved according to the invention in that the vacuum interrupters are arranged with longitudinal axes oriented at right angles to the front wall of the container and that the switch-disconnector is arranged with an axis of rotation which is likewise horizontal, but is oriented parallel to the front wall of the container.
Durch die Drehung sowohl des Vakuumschalters als auch des Lasttrennschalters um 90" bleiben die elektrischen Verbin¬ dungen zwischen diesen beiden Schaltgeräten unverändert erhalten. Andererseits können nun anstelle des bisher erforderlichen Umlenkgetriebes zwischen dem Vakuumschalter und der an der Frontwand sitzenden zugeordneten Antriebs¬ vorrichtung zweckmäßig linear wirkende Antriebsteile einge¬ setzt werden. Beispiele hierfür sind der EP-A-0 354 803 oder der DE-A-41 23 710 zu entnehmen. In beiden Fällen ist jeder Vakuumschaltröhre eine Betätigungsstange zugeordnet, die mittels eines Faltenbalges abgedichtet in den Behälter eingeführt ist. Andererseits gelangen die Anschlußvorrich¬ tungen des Lasttrennschalters in eine Stellung, die eine kreuzungsfreie Verbindung mit den an der Frontwand des Behälters vorgesehenen Abgangsdurchführungen ermöglicht.By rotating both the vacuum switch and the load break switch by 90 ", the electrical connections between these two switching devices remain unchanged. On the other hand, instead of the previously required deflection gear between the vacuum switch and the associated drive device seated on the front wall, it is now expedient to have a linear action Drive parts are used, examples of which can be found in EP-A-0 354 803 or DE-A-41 23 710. In both cases, each vacuum interrupter is assigned an actuating rod which is inserted into the container in a sealed manner by means of a bellows. On the other hand, the connection devices of the switch disconnector come into a position which enables a connection without intersection with the outgoing feedthroughs provided on the front wall of the container.
Von der bisherigen Anordnung der Sammelschienen-Durchfüh¬ rungen in den Seitenwänden des Behälters kann ohne Nachteil abgesehen werden. Auch diese Durchführungen lassen sich an der Frontwand des Behälters anordnen und kreuzungsfrei mit dem Lasttrennschalter verbinden. DieThe previous arrangement of the busbar bushings in the side walls of the container can be dispensed with without disadvantage. These bushings can also be arranged on the front wall of the container and connected to the switch disconnector without crossing. The
Behälter einer mehrfeldrigen Schaltanlage können dann ohne seitlichen Abstand nebeneinander aufgestellt werden, wobei die Sammelschienen vor den Behältern in geeigneter Weise verlegbar und im Bedarfsfall anpaßbar sind.Containers of a multi-panel switchgear can then be set up side by side without any lateral spacing, the busbars being able to be laid in front of the containers in a suitable manner and adaptable if necessary.
Im Rahmen der Erfindung kann der Lasttrennschalter durch einen mit seiner Schalterwelle zusammenwirkenden inneren Schwenkhebel betätigbar sein, der an seinem der Frontwand des Behälters zugewandten Ende zum Eingriff eines äußeren, gegenüber der Frontwand gasdicht abgedichteten Schwenkhe¬ bels eine Gabelöffnung besitzt. Diese Anordnung ist vor¬ teilhaft für die Montage des Lasttrenπschalters, weil die Kupplung mit der Antriebsvorrichtung auf denkbar einfache Weise zustande kommt.In the context of the invention, the load-break switch can be actuated by an inner pivoting lever which interacts with its switch shaft and which, on its end facing the front wall of the container, engages an outer, has a fork opening in a gas-tight manner sealed to the front wall. This arrangement is advantageous for the assembly of the load break switch because the coupling with the drive device is accomplished in a very simple manner.
Die Erfindung wird im folgenden anhand der Figuren näher erläutert.The invention is explained in more detail below with reference to the figures.
Die Figur 1 zeigt seitlich aufgeschnitten ein Feld einer Mittelspannungs-Schaltanlage mit einem Vakuum-Leistungs¬ schalter und einem Dreistellungs-Lasttrennschalter sowie den zugehörigen Antriebsvorrichtungen und den elektrischen Durchführungen.1 shows a section of a medium-voltage switchgear with a vacuum circuit breaker and a three-position switch-disconnector, as well as the associated drive devices and the electrical bushings.
In der Figur 2 ist die nebeneinanderliegende Anordnung von drei Vakuumschaltröhren des Vakuum-Leistungsschalters nach der Figur 1 dargestellt. Nur die mittlere von drei oberen Isolierplatten ist gezeigt, um die darunterliegenden Teile sichtbar zu machen.FIG. 2 shows the side-by-side arrangement of three vacuum interrupters of the vacuum circuit breaker according to FIG. 1. Only the middle of three upper insulating plates is shown to make the parts underneath visible.
Das in den Figuren gezeigte Schaltfeld 1 weist einen zugangslos verschlossenen Behälter 2 aus Stahlblech auf, der einen als Ganzes mit 3 bezeichneten Vakuum-Leistungs- Schalter mit einer Antriebsvorrichtung 4 und einen Drei- stellungs-Lasttrennschalter 5 mit einer zugehörigen weite¬ ren Antriebsvorrichtung 6 umfaßt. Der Behälter 2 ist im Betrieb geerdet und enthält ein geeignetes Isoliergas, bei¬ spielsweise Schwefelhexafluorid (SF,). An der Frontwand des Behälters 1 befinden sich Durchführungen 7 für Kabelab¬ gänge 10 und weitere Durchführungen 11 als Einspeisung.The control panel 1 shown in the figures has a container 2 made of sheet steel which is closed without access and which comprises a vacuum power switch, designated as a whole as 3, with a drive device 4 and a three-position switch disconnector 5 with an associated further drive device 6 . The container 2 is grounded during operation and contains a suitable insulating gas, for example sulfur hexafluoride (SF,). On the front wall of the container 1 there are bushings 7 for cable outlets 10 and further bushings 11 as a feed.
Der Vakuum-Leistungsschalter 3 ist dreipolig ausgebildet und weist dementsprechend drei Vakuumschaltröhren 12 auf, die jeweils mittels einer geradlinig aufgebauten und eine Frontwand 13 des Behälter 1 durchsetzenden Kupplungsvor¬ richtung 14 durch die Antriebsvorrichtung 4 zum Ein- und Ausschalten betätigbar sind. Die drei Vakuumschaltröhren 12 liegen mit horizontaler Längsachse nebeneinander und sind in einer noch zu erläuternden Weise zwischen Isolier¬ platten befestigt. Der unterhalb des Vakuum-Leistungs¬ schalters 3 angeordnete Lasttrennschalter 5 ist mit parallel zur Frontwand 13 des Behälters 2 verlaufender Drehachse angeordnet. Die drei Pole des Lasttrennschalters 5 liegen daher in der Figur 1 ebenso hintereinander wie die drei Vakuumschaltröhren 12. Daher können die Verbindun¬ gen zwischen beiden Schaltern ohne Kreuzung hierzu vorge¬ sehener Stromschienen 15 leicht hergestellt werden. Ergeb- nis der beschriebenen Ausrichtung der Vakuumschaltröhren 12 und des Lasttrennschalter 5 zur Frontwand 13 des Behälters 2 ist es auch, daß einspeisende Stromschienen 16 kreuzungsfrei vertikal zwischen den Durchführungen 11 und den Vakuumschaltröhren 12 verlegbar sind. Die Durchführun- gen 11 sind in der Höhe gestuft angeordnet, um den Anschluß von Stromschienen zu erleichtern. Bei einer mehrfeldrigen Schaltanlage sind auf diese Weise die Sammelschienen frontseitig anzuschließen, ohne daß Zugang zum Innenraum der Behälter bestehen muß.The vacuum circuit breaker 3 has a three-pole design and accordingly has three vacuum interrupters 12, which can each be actuated by the drive device 4 for switching on and off by means of a coupling device 14 constructed in a straight line and passing through a front wall 13 of the container 1. The three vacuum interrupters 12 lie next to one another with a horizontal longitudinal axis and are fastened between insulating plates in a manner still to be explained. The load break switch 5 arranged below the vacuum circuit breaker 3 is arranged with an axis of rotation running parallel to the front wall 13 of the container 2. The three poles of the load break switch 5 are therefore one behind the other in FIG. 1, as are the three vacuum interrupters 12. Therefore, the connections between the two switches can be easily made without crossing the busbars 15 provided for this purpose. As a result of the described alignment of the vacuum interrupters 12 and the load-break switch 5 to the front wall 13 of the container 2, it is also possible for feeder busbars 16 to be laid vertically between the bushings 11 and the vacuum interrupters 12 without crossing. The bushings 11 are arranged in steps in height in order to facilitate the connection of busbars. In a multi-panel switchgear, the busbars can be connected from the front without having to have access to the interior of the container.
Im folgenden werden Einzelheiten des Vakuum-Leistungsschal¬ ters 3 erläutert. Wie die Figur 1 zeigt, ist jeder Vakuum¬ schaltröhre 12 eine obere Isolierplatte 17 zugeordnet, die an winkelförmigen Haltegliedern 20 befestigt sind. Die Halteglieder 20 sind an der Frontwand 13 und einer ihr gegenüberstehenden Rückwand 21 des Behälters 2 befestigt. Mit jeder oberen Isolierplatte 17 sind ein hinterer Träger 22 und ein vorderer Träger 23 verbunden, zwischen denen die Vakuumschaltröhre angeordnet ist. Jeweils eine obere Isolierplatte 17 mit den Trägern 22 und 23 sowie der Vaku¬ umschaltröhre 12 bilden eine zwar nicht funktionsfähige, jedoch mechanisch zusammenhängende und montagefähige Einheit, die, solange der Behälter 2 noch offen ist, auf einfache Weise an den Haltegliedern 20 aufgehängt und befestigt werden kann.Details of the vacuum circuit breaker 3 are explained below. As FIG. 1 shows, each vacuum interrupter 12 is assigned an upper insulating plate 17, which is attached to angular holding members 20. The holding members 20 are attached to the front wall 13 and an opposite rear wall 21 of the container 2. A rear carrier 22 and a front carrier 23 are connected to each upper insulating plate 17, between which the vacuum interrupter is arranged. One upper one at a time Insulating plate 17 with the brackets 22 and 23 and the vacuum switch tube 12 form a non-functional, but mechanically coherent and assembly-ready unit which, as long as the container 2 is still open, can be easily hung and fastened to the holding members 20.
Weiterer Bestandteil des Leistungsschalters 3 sind zwei untere Isolierplatten 24 und 25, die sich quer zu den oberen Isolierplatten 17 erstrecken und die ähnlich wie diese an Haltegliedern 26 befestigt sind, die ihrerseits an den Wänden des Behälters 2 befestigt sind. Die Isolier¬ platte 24 ist dabei gemeinsam für die hinteren, mit den Trägern 22 verbundenen Enden der Vakuumschaltröhren 12, während die Isolierplatte 25 gemeinsam für vorderen, mit den Trägern 23 verbundenen Enden der Vakuumschaltröhren 12 ist. Diese Anordnung der Isolierplatten 17, 24 und 25 führt zu einer guten Versteifung gegen die hohen Kräfte, die Kurzschlußströme aufgrund der relativ kleinen gegen- seitigen Abstände der Vakuumschaltröhren im Isoliergas hervorrufen können, während gleichzeitig die Zirkulation des in dem Behälter 2 befindlichen Isoliergases im Bereich der Vakuumschaltröhren 12 weniger als bei Verwendung einer einzigen unteren Isolierplatte behindert ist.Another component of the circuit breaker 3 are two lower insulating plates 24 and 25 which extend transversely to the upper insulating plates 17 and which, like this, are fastened to holding members 26 which in turn are fastened to the walls of the container 2. The insulating plate 24 is common for the rear ends of the vacuum interrupters 12 connected to the carriers 22, while the insulating plate 25 is common for front ends of the vacuum interrupters 12 connected to the carriers 23. This arrangement of the insulating plates 17, 24 and 25 leads to a good stiffening against the high forces which short-circuit currents can cause due to the relatively small mutual spacings of the vacuum interrupters in the insulating gas, while at the same time the circulation of the insulating gas in the container 2 in the region of the Vacuum interrupters 12 is less than when using a single lower insulating plate.
Die unteren Halteglieder 26 sind zweckmäßig an gegenüber¬ liegenden Seitenwänden 28 und 29 des Behälters 2 ange¬ bracht. Wird anstelle der einzelnen unteren Isolierplatten 24 und 25 eine gemeinsame untere Isolierplatte benutzt, so ist auch eine andere Anordnung der Halteglieder 26 möglich, beispielsweise sowohl an der Rückwand 21 als auch an den Seitenwänden 28 und 29. Auch empfiehlt es sich, eine für alle Vakuumschaltröhren 12 gemeinsame untere Isolierplatte so zu bemessen, daß sie ebenso wie die rechte untere Isolierplatte 25 in Richtung auf die Frontwand 13 nicht wesentlich über die Anschlußvorrichtung 30 hinausragt, damit die Elemente der Kupplungsvorrichtung 14 bei der Montage von unten gut zugänglich sind und das Isoliergas zirkulieren kann.The lower holding members 26 are expediently attached to opposite side walls 28 and 29 of the container 2. If a common lower insulating plate is used instead of the individual lower insulating plates 24 and 25, a different arrangement of the holding members 26 is also possible, for example both on the rear wall 21 and on the side walls 28 and 29. It is also recommended to use one for all vacuum interrupters 12 common lower insulating plate to be dimensioned so that it is just like the lower right Insulating plate 25 does not protrude significantly beyond the connecting device 30 in the direction of the front wall 13, so that the elements of the coupling device 14 are easily accessible from below during assembly and the insulating gas can circulate.
An den hinteren Enden der Vakuumschaltröhren 12 sind An¬ schlußschienen 27 vorgesehen, die durch Öffnungen der unteren Isolierplatten 24 nach unten herausgeführt und dort mit den Stromschienen 16 verbunden sind. Die vorderen unteren Isolierplatten 25 tragen jeweils eine Anschlußvor¬ richtung 30 für die Stromschienen 15 und ein biegsames Stromband 31, das die elektrische Verbindung mit dem bewegbaren Anschlußbolzen 32 der Vakuumschaltröhre 12 herstellt.At the rear ends of the vacuum interrupters 12 there are connection rails 27 which are led down through openings in the lower insulating plates 24 and are connected there to the busbars 16. The front lower insulating plates 25 each carry a connection device 30 for the busbars 15 and a flexible current band 31, which establishes the electrical connection with the movable connection bolt 32 of the vacuum interrupter 12.
Jede der Vakuumschaltröhren 12 ist, wie schon erwähnt, durch eine Kupplungsvorrichtung 14 mit der Antriebsvor¬ richtung 4 verbunden. Als Bestandteile der Kupplungsvor- richtung 14 sind eine Klemmvorrichtung 33, ein Isolier¬ körper 34 und eine Betätigungsstange 35 in Verbindung mit einem Faltenbalg 36 vorgesehen. Der Faltenbalg 36 ist mit seinem einen Ende in der Frontwand 13 des Behälters 2 befestigt und an seinem gegenüberliegenden, in den Behäl- ter 2 hineinragenden Ende mit der Betätigungsstange 35 verbunden. Mit dem an der Außenseite des Behälter 2 zu¬ gänglichen Ende der Betätigungsstange 35 ist ein Hebelge¬ triebe 37 verbunden, zu dem eine als Kontaktkraftfeder und als Ausschaltfeder dienende Zugfeder 40 gehört. Das Hebel- getriebe kann vorzugsweise den in der DE-A-34 14 016 beschriebenen Aufbau besitzen. Die entsprechend der Pol¬ zahl vorhandenen Hebelgetriebe 37 werden zum Einschalten der Vakuumschaltröhren in bekannter Weise gemeinsam von der Antriebsvorrichtung 4 mit einer Antriebskraft beauf- schlagt. Zum Ausschalten wird die Aπtriebsvorrichtuπg 4 entklinkt, worauf die Zugfeder 40 als Ausschaltfeder wirksam werden und die Vakuumschaltröhren 12 entgegen dem in dem Behälter bestehenden Gasdruck ausschalten kann.As already mentioned, each of the vacuum interrupters 12 is connected to the drive device 4 by a coupling device 14. A clamping device 33, an insulating body 34 and an actuating rod 35 in connection with a bellows 36 are provided as components of the coupling device 14. The bellows 36 is fastened at one end in the front wall 13 of the container 2 and at its opposite end, which projects into the container 2, is connected to the actuating rod 35. A lever gear 37 is connected to the end of the actuating rod 35 which is accessible on the outside of the container 2 and to which a tension spring 40 serving as a contact force spring and as an opening spring belongs. The lever mechanism can preferably have the structure described in DE-A-34 14 016. The lever gears 37 corresponding to the number of poles are jointly actuated in a known manner by the drive device 4 with a driving force to switch on the vacuum interrupters. strikes. To switch off, the drive device 4 is unlatched, whereupon the tension spring 40 acts as a switch-off spring and can switch off the vacuum interrupters 12 against the gas pressure existing in the container.
Wie bereits erwähnt, gehört zu dem Schaltfeld 1 ein Drei- stellungs-Lasttrennschalter 5, beispielsweise in der Bau¬ art gemäß der DE-C-33 04 272. Die Schaltung des Leistungs¬ schalters 3 und des Lasttrennschalters 5 kann insbesondere entsprechend der DE-A-39 15 949 gewählt sein, um Kur¬ zschlußströme ohne eine gegenseitige Verriegelung des Leistungsschalters und des Lasttrennschalters beherrschen zu können.As already mentioned, the switch panel 1 includes a three-position switch-disconnector 5, for example of the type according to DE-C-33 04 272. The circuit of the circuit-breaker 3 and the load-break switch 5 can in particular be A-39 15 949 can be selected in order to be able to control short-circuit currents without interlocking the circuit breaker and the load-break switch.
Eine für alle Pole des Lasttrennschalters 5 gemeinsame Schalterwelle 41 ist horizontal und parallel zur Front¬ wand 13 des Behälters 2 angeordnet. Die Antriebsvorrich¬ tung 6 für den Lasttrennschalter 5 arbeitet mit der Schalterwelle 41 mittels einer weiteren, als Ganzes mit 42 bezeichneten Kupplungsvorrichtung zusammen, die so ausge¬ bildet ist, daß der Einbau des Lasttrennschalters 5 in den Behälter 2 mit nur geringem Aufwand durchführbar ist. Hier¬ zu weist die Kupplungsvorrichtung 42, wie an sich bekannt, einen Faltenbalg 43 auf, der mit seinem einen Ende gas- dicht in der Frontwand 13 des Behälters 2 befestigt ist.A switch shaft 41 which is common to all poles of the load-break switch 5 is arranged horizontally and parallel to the front wall 13 of the container 2. The Antriebsvorrich¬ device 6 for the load break switch 5 works with the switch shaft 41 by means of another, generally designated 42 coupling device, which is designed such that the installation of the load break switch 5 in the container 2 can be carried out with little effort. To this end, the coupling device 42, as is known per se, has a bellows 43, which is fastened with one end in a gas-tight manner in the front wall 13 of the container 2.
Im Unterschied zu den Faltenbälgen 36 für- die Vakuumschalt¬ röhren 12 wird der Faltenbalg 43 nicht zur Einleitung einer linearen Bewegung, sondern einer Schwenkbewegung benutzt. Dies geschieht durch einen äußeren Schwenkhebel 44, dessen Schwenklager etwa in der Ebene der Frontwand 13 angeordnet ist. Am inneren Ende des äußeren Schwenkhebels 44 befindet sich ein Mitnehmerbolzen 45 für eine Gabel¬ öffnung 46 eines inneren Schwenkhebels 47, der etwa mittig auf einem Lagerbolzen 50 gelagert ist. Am anderen Ende des inneren Schwenkhebels 47 wird durch ein Umlenkge¬ triebe 51 die Schalterwelle 41 betätigt. Zweckmäßig ist der innere Schwenkhebel 47 und das Umlenkgetriebe 51 an dem Lasttrennschalter 5 befestigt, derart, daß diese Ein¬ heit durch einfaches Aufschieben der Gabelöffnung 46 auf den Mitnehmerbolzen 45 mit dem äußeren Schwenkhebel 44 und damit mit der Antriebsvorrichtung 6 für den Lasttrenn¬ schalter 5 kuppelbar ist. Justier- und Einstellarbeiten können weitgehend entfallen. In contrast to the bellows 36 for the vacuum interrupters 12, the bellows 43 is not used to initiate a linear movement, but rather a pivoting movement. This is done by an outer pivot lever 44, the pivot bearing of which is arranged approximately in the plane of the front wall 13. At the inner end of the outer pivot lever 44 there is a driver pin 45 for a fork opening 46 of an inner pivot lever 47, which is mounted approximately centrally on a bearing pin 50. At the other At the end of the inner pivot lever 47, the switch shaft 41 is actuated by a deflecting gear 51. The inner pivot lever 47 and the deflecting gear 51 are expediently fastened to the load-break switch 5 in such a way that this unit by simply pushing the fork opening 46 onto the driver bolt 45 with the outer pivot lever 44 and thus with the drive device 6 for the load-break switch 5 can be coupled. Adjustment and adjustment work can largely be dispensed with.

Claims

Patentansprüche Claims
1. Gasisolierte Schaltanlage mit einem gasgefüllten Be¬ hälter (2) und einem in dem Behälter (2) mit horizontaler Lage seiner Vakuumschaltröhren (12) angeordneten mehrpoli¬ gen Vakuumschalter (3) sowie mit einem mit horizontaler Lage seiner Schalterwelle (41) unterhalb des Vakuumschal¬ ters (3) angeordneten mehrpoligen Dreistellungs-Lasttrenn- schalter (5) und an einer Frontwand (13) des Behälters (2) angeordneten Antriebsvorrichtung (4, 6) für den Vakuum¬ schalter (3) und den Lasttrennschalter (5), ferner mit unterhalb des Lasttrennschalters (5) an der Frontwand (13) angeordneten Abgangsdurchführungen (7), d a d u r c h g e k e n n z e i c h n e t , daß die Vakuumschaltröhren (12) mit rechtwinklig zur Frontwand (13) des Behälters (2) ausgerichteten Längsachsen angeordnet sind und daß der Lasttrennschalter (5) mit gleichfalls horizontaler, jedoch parallel zur Frontwand (13) des Behälters (2) ausgerichteter Drehachse angeordnet ist.1. Gas-insulated switchgear with a gas-filled container (2) and a multipole vacuum switch (3) arranged in the container (2) with the horizontal position of its vacuum interrupters (12) and with a horizontal position of its switch shaft (41) below the Vacuum switch (3) arranged multi-pole three-position switch disconnector (5) and on a front wall (13) of the container (2) arranged drive device (4, 6) for the vacuum switch (3) and the switch disconnector (5), furthermore with outlet bushings (7) arranged below the load break switch (5) on the front wall (13), characterized in that the vacuum interrupters (12) are arranged with longitudinal axes oriented at right angles to the front wall (13) of the container (2) and that the load break switch (5 ) is also arranged with a horizontal, but parallel to the front wall (13) of the container (2) aligned axis of rotation.
2. Gasisolierte Schaltanlage 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 der Lasttrennschalter (5) durch einen mit seiner Schalterwelle (41) zusammenwirkendem inneren Schwenkhebel (47) betätigbar ist, der an seinem der Frontwand (13) des Behälters (2) zugewandten Ende zum Eingriff eines äußeren, gegenüber der Frontwand (13) gasdicht abgedichteten Schwenkhebels (44) eine Gabelöffnung (46) besitzt. 2. Gas-insulated switchgear according to claim 1, characterized in that the load-break switch (5) can be actuated by an inner pivot lever (47) which interacts with its switch shaft (41) and which engages on its end facing the front wall (13) of the container (2) of an outer pivot lever (44) which is sealed in a gas-tight manner with respect to the front wall (13) has a fork opening (46).
EP93907775A 1992-03-31 1993-03-26 Gas-insulated switching unit with a multi-pole vacuum switch and a multipole load-break switch Expired - Lifetime EP0634048B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4211155A DE4211155A1 (en) 1992-03-31 1992-03-31 Gas-insulated switchgear with a multi-pole vacuum switch and a multi-pole switch disconnector
DE4211155 1992-03-31
PCT/DE1993/000310 WO1993020572A1 (en) 1992-03-31 1993-03-26 Gas-insulated switching unit with a multi-pole vacuum switch and a multipole load-break switch

Publications (2)

Publication Number Publication Date
EP0634048A1 true EP0634048A1 (en) 1995-01-18
EP0634048B1 EP0634048B1 (en) 1995-12-27

Family

ID=6455947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93907775A Expired - Lifetime EP0634048B1 (en) 1992-03-31 1993-03-26 Gas-insulated switching unit with a multi-pole vacuum switch and a multipole load-break switch

Country Status (12)

Country Link
US (1) US5508486A (en)
EP (1) EP0634048B1 (en)
JP (1) JPH07505253A (en)
AT (1) ATE132291T1 (en)
DE (2) DE4211155A1 (en)
DK (1) DK0634048T3 (en)
ES (1) ES2081710T3 (en)
FI (1) FI944519A (en)
GR (1) GR3018741T3 (en)
NO (1) NO305927B1 (en)
RU (1) RU2098902C1 (en)
WO (1) WO1993020572A1 (en)

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Also Published As

Publication number Publication date
DK0634048T3 (en) 1996-05-13
FI944519A0 (en) 1994-09-29
RU94041220A (en) 1996-07-20
DE4211155A1 (en) 1993-10-07
NO943634D0 (en) 1994-09-29
GR3018741T3 (en) 1996-04-30
US5508486A (en) 1996-04-16
ES2081710T3 (en) 1996-03-16
DE59301266D1 (en) 1996-02-08
FI944519A (en) 1994-09-29
RU2098902C1 (en) 1997-12-10
NO943634L (en) 1994-09-30
JPH07505253A (en) 1995-06-08
EP0634048B1 (en) 1995-12-27
ATE132291T1 (en) 1996-01-15
NO305927B1 (en) 1999-08-16
WO1993020572A1 (en) 1993-10-14

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