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EP0031791B1 - High voltage power circuit breaker - Google Patents

High voltage power circuit breaker Download PDF

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Publication number
EP0031791B1
EP0031791B1 EP80730071A EP80730071A EP0031791B1 EP 0031791 B1 EP0031791 B1 EP 0031791B1 EP 80730071 A EP80730071 A EP 80730071A EP 80730071 A EP80730071 A EP 80730071A EP 0031791 B1 EP0031791 B1 EP 0031791B1
Authority
EP
European Patent Office
Prior art keywords
connecting rod
auxiliary
auxiliary switching
crank drive
gap
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.)
Expired
Application number
EP80730071A
Other languages
German (de)
French (fr)
Other versions
EP0031791A1 (en
Inventor
Karl Ing. Grad Mascher
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
Priority to AT80730071T priority Critical patent/ATE3482T1/en
Publication of EP0031791A1 publication Critical patent/EP0031791A1/en
Application granted granted Critical
Publication of EP0031791B1 publication Critical patent/EP0031791B1/en
Expired legal-status Critical Current

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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock

Definitions

  • the invention relates to a high-voltage circuit breaker with an on-resistance, which is connected in the course of the closing process via an auxiliary switching path in parallel with the main switching path and is switched off after its closing by opening the auxiliary switching path until the main switching path is switched on again, with a movable auxiliary switching pin of the auxiliary switching path which is spring-loaded in the opening direction and with a connecting rod articulated on this auxiliary switching pin, which is connected in an articulated manner to a rotatably mounted crank mechanism of the drive element.
  • crank pin is pivoted by the crank mechanism, which moves the connecting rod via a locking cam until this locking cam strikes a stationary trigger and releases the connecting rod for a return movement. N., ch the release runs the crank pin in an elongated hole arranged in the connecting rod, the length of which is adapted to the return path of the auxiliary switching pin.
  • the invention has for its object to provide a high-voltage circuit breaker of the type mentioned, the auxiliary switching path drive is simplified in construction. In particular, locking cams, ratchet lock or the like. be avoided.
  • crank mechanism has a link which forcibly guides the associated joint of the connecting rod, which consists of a part which is concentric with the rotary shaft of the crank mechanism and an adjoining rectilinear part which is upstream and bent upward in the direction of engagement.
  • the control of the auxiliary switching pin is effected by the backdrop, the timing of the auxiliary switching pin movement resulting from the design of the two backdrop parts and their relatively related lengths.
  • the spring loading of the auxiliary switching pin results in positive guidance with only one guide surface of the link.
  • the link has parallel guide surfaces for the crank bearing of the connecting rod. This results in a positive connection between the connecting rod and the crank mechanism.
  • the triggering of the return movement during the opening process of the circuit breaker is automatically effected by the backdrop. Nevertheless, it can be advantageous in some cases to assign a projection to the straight-line part of the setting, which acts on the connecting rod in the sense of triggering.
  • a particularly advantageous embodiment of the invention results if the link is provided with a hub which forms a stop and guide surface.
  • Figure 1 shows schematically a high-voltage circuit breaker with on-resistance.
  • FIGS. 2 to 6 show representations for the sequence of movements of the crank mechanism provided for controlling the starting resistor according to FIG. 1 on the basis of various positions during the switching on and off. _
  • a high-voltage circuit breaker with on-resistance with the parts necessary for understanding the invention is partly shown schematically in section, in which all parts not essential to explain the invention, such as Post insulators, base frame and hydraulic or pneumatic drive devices, which are omitted for the sake of simplicity.
  • the high-voltage circuit breaker contains a main switching path 1, which can be connected in parallel with a closing resistor 2 for damping switch-on overvoltages.
  • the switch-on resistor 2 is assigned an auxiliary switching path 3, which consists of a movable auxiliary switching pin 3a and a spring-loaded fixed contact 3b.
  • the auxiliary switching pin 3a is loaded by a spring 4 in the switch-off direction and is actuated via a connecting rod 5 by a crank mechanism 7 arranged on a rotary shaft 6.
  • the sequence of movements for the auxiliary switching pin 3a is controlled in such a way that the auxiliary switching path 3 closes in the course of the switch-on process before the main switching path 1 closes.
  • the series connection consisting of the on-resistance 2 and the auxiliary switching path 3 is bridged and thus rendered ineffective.
  • the auxiliary switching path 3 opens automatically after the main switching path 1 is closed. In this switch-off position The auxiliary switching path 3 remains until the main switching path 1 is switched on again.
  • the crank mechanism 7 has a link 10 comprising the joint 9 of the connecting rod 5 with parallel guide surfaces, which consists of a part 10a which is concentric with the rotary shaft 6 of the crank mechanism 7 and a subsequent rectilinear part 10b which is upstream and bent upward in the switch-on direction. If the drive for the auxiliary switching path 3, as shown in FIG. 2, is pivoted in the direction of the arrow 8, the connecting rod bearing (joint 9) arranged in part 10b of the link 10 and the associated connecting rod 5 are actuated in such a way that the auxiliary switching pin 3a is in the direction of the arrow 11 is moved.
  • the connecting rod bearing runs through part 10a to a damping cushion 13 provided at the end of the link.
  • the main switching path is switched on.
  • the crank mechanism 7 is moved in the direction of the arrow 14 together with the gear provided for this purpose, the hub 15 surrounding the rotary shaft 6 forming a stop and guide surface for the connecting rod 5.
  • the connecting rod bearing (joint 9) again reaches the bent part 10b and is ready for a restart.
  • the cushion pad 13 may be made of rubber or other suitable shock absorbing material.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Amplifiers (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Details Of Television Scanning (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Circuit Breakers (AREA)

Abstract

To reduce overvoltages when switching high-voltage circuit breakers, particularly when connecting unloaded overhead lines, closing resistors are used which, during closing of the breaker, are connected in parallel relationship with the main switching gap of the circuit breaker by means of an auxiliary switching gap. After the main switching gap is closed, the closing resistor is disconnected by opening the auxiliary switching gap before the main gap opens and keeping the auxiliary gap open until the main switching gap is reclosed. For this purpose, the high-voltage circuit breaker includes a movable auxiliary contact pin which is spring loaded in the opening direction of the auxiliary switching gap, and a connecting rod which is linked to the auxiliary contact pin and is connected, hinged, to a rotatably supported crank drive of the drive unit of the breaker. The crank drive has a gate aperture which forcibly guides one end of the connecting rod and comprises a first curved portion which is concentric with a rotating shaft for the crank drive, and an adjoining straight portion which is disposed at the end of the curved portion located along the direction of rotation of the crank drive during closing of the breaker and is disposed approximately radially outwardly with respect to the crank drive shaft.

Description

Die Erfindung bezieht sich auf einen Hochspannungs-Leistungsschalter mit einem Einschaltwiderstand, der im Verlaufe des Einschaltvorganges über eine Hilfsschaltstrecke parallel zur Hauptschaltstrecke geschaltet und nach deren Schliessen durch Öffnen der Hilfsschaltstrecke bis zum Wiedereinschalten der Hauptschaltstrecke ausgeschaltet ist, mit einem in Ausschaltrichtung federbelasteten beweglichen Hilfsschaltstift der Hilfsschaltstrecke und mit einer an diesem Hilfsschaltstift angelenkten Pleuelstange, die mit einem drehbar gelagerten Kurbeltrieb des Antriebsorgans gelenkig verbunden ist.The invention relates to a high-voltage circuit breaker with an on-resistance, which is connected in the course of the closing process via an auxiliary switching path in parallel with the main switching path and is switched off after its closing by opening the auxiliary switching path until the main switching path is switched on again, with a movable auxiliary switching pin of the auxiliary switching path which is spring-loaded in the opening direction and with a connecting rod articulated on this auxiliary switching pin, which is connected in an articulated manner to a rotatably mounted crank mechanism of the drive element.

Bei einem derartigen, aus der DE-PS 21 08 915 bekannten Hochspannungs-Leistungsschalter wird vom Kurbeltrieb ein Kurbelzapfen verschwenkt, der über einen Sperrnocken die Pleuelstange bewegt, bis dieser Sperrnocken an einem ortsfesten Auslöser anschlägt und die Pleuelstange zu einer Rücklaufbewegung freigibt. N.,ch der Freigabe läuft der Kurbelzapfen in einem in der Pleuelstange angeordneten Langloch, dessen Länge dem Rücklaufweg des Hilfsschaltstiftes angepasst ist.In such a high-voltage circuit breaker known from DE-PS 21 08 915, a crank pin is pivoted by the crank mechanism, which moves the connecting rod via a locking cam until this locking cam strikes a stationary trigger and releases the connecting rod for a return movement. N., ch the release runs the crank pin in an elongated hole arranged in the connecting rod, the length of which is adapted to the return path of the auxiliary switching pin.

Aus der Siemens-Druckschrift «2 cycle» SFa-Leistungsschalter 3AT5, Bestell-Nr. B 122/1698-220, ist ferner ein Hochspannungs-Leistungsschalter mit Einschaltwiderstand bekannt, dessen Kurbel aus einem mit der Pleuelstange verbundenen Mitnehmerhebel, einem darin geführten federbelasteten Mitnehmer und einer mit der Antriebswelle verdrehungssteif verbundenen Mitnehmerscheibe besteht. Im Verlauf der Einschaltbewegung wird der Hebel aufgrund der verklinkten Lage des Mitnehmers an der Mitnehmerscheibe gemeinsam mit dieser verdreht, bis ein ortsfester Anschlag den Mitnehmer entgegen der Kraft der ihn belastenden Feder ausser Eingriff mit der Mitnehmerscheibe bringt und so die Rücklaufbewegung des ebenfalls federbelasteten Hilfsschaltstiftes einleitet.From the Siemens publication “2 cycle” SF a circuit breaker 3AT5, order no. B 122 / 1698-220, a high-voltage circuit breaker with closing resistance is also known, the crank of which consists of a connecting lever connected to the connecting rod, a spring-loaded connecting element guided therein and a connecting plate connected to the drive shaft in a torsionally rigid manner. In the course of the switch-on movement, the lever is rotated together with the drive plate due to the latched position of the driver until a stationary stop disengages the driver against the force of the spring loading it and thus initiates the return movement of the likewise spring-loaded auxiliary switching pin.

Der Erfindung liegt die Aufgabe zugrunde, einen Hochspannungs-Leistungsschalter der eingangs genannten Art anzugeben, dessen Hilfsschaltstreckenantrieb konstruktiv vereinfacht ist. Insbesondere sollen Sperrnocken, Klinkengesperre o.dgl. vermieden werden.The invention has for its object to provide a high-voltage circuit breaker of the type mentioned, the auxiliary switching path drive is simplified in construction. In particular, locking cams, ratchet lock or the like. be avoided.

Diese Aufgabe wird nach der Erfindung dadurch gelöst, dass der Kurbeltrieb eine das zugehörige Gelenk der Pleuelstange zwangsweise führende Kulisse aufweist, die aus einem zur Drehwelle des Kurbeltriebs konzentrischen Teil und einem daran anschliessenden, in Einschaltrichtung vorgelagerten, annähernd radial nach aussen geknickten geradlinigen Teil besteht.This object is achieved according to the invention in that the crank mechanism has a link which forcibly guides the associated joint of the connecting rod, which consists of a part which is concentric with the rotary shaft of the crank mechanism and an adjoining rectilinear part which is upstream and bent upward in the direction of engagement.

Die Steuerung des Hilfsschaltstiftes wird durch die Kulisse bewirkt, wobei sich der zeitliche Ablauf der Hilfsschaltstift-Bewegung aus der Gestaltung der beiden Kulissenteile und ihrer relativ aufeinander bezogenen Längen ergibt.The control of the auxiliary switching pin is effected by the backdrop, the timing of the auxiliary switching pin movement resulting from the design of the two backdrop parts and their relatively related lengths.

Durch die Federbelastung des Hilfsschaltstiftes ergibt sich eine Zwangsführung mit nur einer Führungsfläche der Kulisse. Um bei Stossimpulsen des Antriebs einen unerwünschten Freilauf des Hilfsschaltstiftes zu vermeiden, ist es vorteilhaft, wenn die Kulisse parallel verlaufende Führungsflächen für das Kurbellager der Pleuelstange aufweist. Damit ergibt sich eine formschlüssige Verbindung zwischen Pleuelstange und Kurbeltrieb.The spring loading of the auxiliary switching pin results in positive guidance with only one guide surface of the link. In order to avoid undesired free running of the auxiliary switching pin in the event of shock impulses from the drive, it is advantageous if the link has parallel guide surfaces for the crank bearing of the connecting rod. This results in a positive connection between the connecting rod and the crank mechanism.

Die unvermeidbaren, auf die Pleuelstange einwirkenden Stosskräfte können in ihrer Wirkung auf die Schaltstelle gemindert werden, wenn die Kulisse an den Endstellen Dämpfungspolster enthält.The inevitable impact forces acting on the connecting rod can be reduced in their effect on the switching point if the link contains damping pads at the end points.

Die Auslösung der Rücklaufbewegung während des Einschaltvorganges des Leistungsschalters wird an sich durch die Kulisse selbsttätig bewirkt. Dennoch kann es für manche Fälle vorteilhaft sein, dem geradlinigen Teil der Kulisse einen Vorsprung zuzuordnen, der auf die Pleuelstange im Sinne einer Auslösung einwirkt. Eine besonders vorteilhafte Ausgestaltung der Erfindung ergibt sich, wenn die Kulisse mit einer Nabe versehen ist, die eine Anschlags- und Führungsfläche bildet.The triggering of the return movement during the opening process of the circuit breaker is automatically effected by the backdrop. Nevertheless, it can be advantageous in some cases to assign a projection to the straight-line part of the setting, which acts on the connecting rod in the sense of triggering. A particularly advantageous embodiment of the invention results if the link is provided with a hub which forms a stop and guide surface.

Anhand der Zeichnung ist ein Ausführungsbeispiel der Erfindung beschrieben und die Wirkungsweise erläutert.An exemplary embodiment of the invention is described with reference to the drawing and the mode of operation is explained.

Die Figur 1 zeigt schematisch einen Hochspannungs-Leistungsschalter mit Einschaltwiderstand.Figure 1 shows schematically a high-voltage circuit breaker with on-resistance.

Die Figuren 2 bis 6 zeigen Darstellungen für den Bewegungsablauf des für die Steuerung des Einschaltwiderstandes nach Fig. 1 vorgesehenen Kurbeltriebs anhand verschiedener Stellungen während des Ein- und Ausschaltvorgangs. _FIGS. 2 to 6 show representations for the sequence of movements of the crank mechanism provided for controlling the starting resistor according to FIG. 1 on the basis of various positions during the switching on and off. _

In Fig. 1 ist ein Hochspannungs-Leistungsschalter mit Einschaltwiderstand mit den zum Verständnis der Erfindung notwendigen Teilen zum Teil im Schnitt schematisch dargestellt, bei dem alle nicht zur Erläuterung der Erfindung wesentlichen Teile, wie z.B. Stützisolatoren, Fussgestell und hydraulische bzw. pneumatische Antriebseinrichtungen, der Einfachheit halber weggelassen sind.In Fig. 1, a high-voltage circuit breaker with on-resistance with the parts necessary for understanding the invention is partly shown schematically in section, in which all parts not essential to explain the invention, such as Post insulators, base frame and hydraulic or pneumatic drive devices, which are omitted for the sake of simplicity.

Der Hochspannungs-Leistungsschalter enthält eine Hauptschaltstrecke 1, der zum Dämpfen von Einschalt-Überspannungen ein Einschaltwiderstand 2 parallelschaltbar ist. Hierzu ist dem Einschaltwiderstand 2 eine Hilfsschaltstrecke 3 zugeordnet, die aus einem beweglichen Hilfsschaltstift 3a und einem federbelasteten Festkontakt 3b besteht. Der Hilfsschaltstift 3a ist von einer Feder 4 in Ausschaltrichtung belastet und wird über eine Pleuelstange 5 von einem auf einer Drehwelle 6 angeordneten Kurbeltrieb 7 betätigt. Der Bewegungsablauf für den Hilfsschaltstift 3a wird dabei so gesteuert, dass im Verlauf des Einschaltvorganges die Hilfsschaltstrecke 3 zeitlich vor dem Schliessen der Hauptschaltstrecke 1 schliesst. Durch das Schliessen der Hauptschaltstrecke 1 wird die aus dem Einschaltwiderstand 2 und der Hilfsschaltstrecke 3 bestehende Reihenschaltung überbrückt und damit wirkungslos gemacht. Um während des Ausschaltvorganges den Einschaltwiderstand 2 unbelastet zu lassen, öffnet die Hilfsschaltstrecke 3 nach dem Schliessen der Hauptschaltstrecke 1 selbsttätig. In dieser Ausschaltlage verbleibt die Hilfsschaltstrecke 3 bis zum Wiedereinschalten der Hauptschaltstrecke 1.The high-voltage circuit breaker contains a main switching path 1, which can be connected in parallel with a closing resistor 2 for damping switch-on overvoltages. For this purpose, the switch-on resistor 2 is assigned an auxiliary switching path 3, which consists of a movable auxiliary switching pin 3a and a spring-loaded fixed contact 3b. The auxiliary switching pin 3a is loaded by a spring 4 in the switch-off direction and is actuated via a connecting rod 5 by a crank mechanism 7 arranged on a rotary shaft 6. The sequence of movements for the auxiliary switching pin 3a is controlled in such a way that the auxiliary switching path 3 closes in the course of the switch-on process before the main switching path 1 closes. By closing the main switching path 1, the series connection consisting of the on-resistance 2 and the auxiliary switching path 3 is bridged and thus rendered ineffective. In order to leave the on-resistance 2 unloaded during the switch-off process, the auxiliary switching path 3 opens automatically after the main switching path 1 is closed. In this switch-off position The auxiliary switching path 3 remains until the main switching path 1 is switched on again.

Dieser Bewegungsablauf wird durch den in den Figuren 2 bis 6 schematisch dargestellten Kurbeltrieb bewirkt. Ausgehend von der Ausschaltstellung des Hochspannungs-Leistungsschalters, in dem die Hauptschaltstrecke 1 und die Hilfsschaltstrecke 3 geöffnet sind, wird während des Einschaltvorganges die Drehwelle 6 in Pfeilrichtung 8 verdreht. Dadurch wird auch der Kurbeltrieb 7 in der gleichen Richtung verschwenkt.This sequence of movements is brought about by the crank mechanism shown schematically in FIGS. 2 to 6. Starting from the switch-off position of the high-voltage circuit breaker, in which the main switching section 1 and the auxiliary switching section 3 are open, the rotary shaft 6 is rotated in the direction of arrow 8 during the switch-on process. As a result, the crank mechanism 7 is also pivoted in the same direction.

Der Kurbeltrieb 7 weist eine das Gelenk 9 der Pleuelstange 5 umfassende Kulisse 10 mit parallelen Führungsflächen auf, die aus einem zur Drehwelle 6 des Kurbeltriebs 7 konzentrischen Teil 10a und einem daran anschliessenden, in Einschaltrichtung vorgelagerten, annähernd radial nach aussen geknickten geradlinigen Teil 10b besteht. Wird der Antrieb für die Hilfsschaltstrecke 3, wie die Figur 2 zeigt, in Pfeilrichtung 8 verschwenkt, so wird das im Teil 10b der Kulisse 10 angeordnete Pleuellager (Gelenk 9) und die zugehörige Pleuelstange 5 in der Weise betätigt, dass der Hilfsschaltstift 3a in Pfeilrichtung 11 bewegt wird.The crank mechanism 7 has a link 10 comprising the joint 9 of the connecting rod 5 with parallel guide surfaces, which consists of a part 10a which is concentric with the rotary shaft 6 of the crank mechanism 7 and a subsequent rectilinear part 10b which is upstream and bent upward in the switch-on direction. If the drive for the auxiliary switching path 3, as shown in FIG. 2, is pivoted in the direction of the arrow 8, the connecting rod bearing (joint 9) arranged in part 10b of the link 10 and the associated connecting rod 5 are actuated in such a way that the auxiliary switching pin 3a is in the direction of the arrow 11 is moved.

In der aus Fig. 3 ersichtlichen Position findet die galvanische Berührung des Hilfsschaltstiftes 3a mit dem Festkontakt 3b statt, d.h. die Hilfsschaltstrecke 3 ist geschlossen. Im weiteren Verlauf der Einschaltbewegung gelangt der Kurbeltrieb in die Ausklinkstellung. Die entgegengesetzt der Pfeilrichtung 11 wirkende Feder 4 des Hilfsschaltstiftes 3a drückt das Pleuellager (Gelenk 9) vom Teil 10b in den Teil 10a der Kulisse 10, wobei sich aufgrund der Abknickung beider Teile eine sprunghafte Auslösung ergibt. Diese sprunghafte Auslösung kann durch einen Vorsprung 12 unterstützt werden, der als Auflöser auf die Pleuelstange 5 einwirkt (Fig. 4).In the position shown in Fig. 3 the galvanic contact of the auxiliary switching pin 3a with the fixed contact 3b takes place, i.e. auxiliary switching path 3 is closed. In the further course of the switch-on movement, the crank mechanism comes into the release position. The spring 4 of the auxiliary switching pin 3a, which acts in the opposite direction to the arrow 11, presses the connecting rod bearing (joint 9) from part 10b into part 10a of the link 10, with a sudden release due to the kinking of both parts. This abrupt triggering can be supported by a projection 12 which acts as a resolver on the connecting rod 5 (FIG. 4).

Wie die Figur 5 zeigt, läuft das Pleuellager durch den Teil 10a hindurch bis zu einem am Kulissenende vorgesehenen Dämpfungspolster 13. In der in der Figur 6 dargestellten Ausschaltstellung der Hilfsschaltstrecke ist die Hauptschaltstrecke eingeschaltet. Zum Ausschalten der Hauptschaltstrecke wird gemeinsam mit dem hierfür vorgesehenen Getriebe der Kurbeltrieb 7 in Pfeilrichtung 14 bewegt, wobei die die Drehwelle 6 umgebende Nabe 15 eine Anschlags- und Führungsfläche für die Pleuelstange 5 bildet. In der ausgeschalteten Lage der Hauptschaltstrecke gelangt das Pleuellager (Gelenk 9) erneut in den abgeknickten Teil 10b und steht für eine Wiedereinschaltung bereit. Das Dämpfungspolster 13 kann aus Gummi oder einem anderen geeigneten stossdämpfenden Material bestehen.As FIG. 5 shows, the connecting rod bearing runs through part 10a to a damping cushion 13 provided at the end of the link. In the switch-off position of the auxiliary switching path shown in FIG. 6, the main switching path is switched on. To switch off the main switching section, the crank mechanism 7 is moved in the direction of the arrow 14 together with the gear provided for this purpose, the hub 15 surrounding the rotary shaft 6 forming a stop and guide surface for the connecting rod 5. In the switched-off position of the main switching section, the connecting rod bearing (joint 9) again reaches the bent part 10b and is ready for a restart. The cushion pad 13 may be made of rubber or other suitable shock absorbing material.

Claims (5)

1. A high-voltage power switch having a switch-on impedance (2) which during the course of the switch-on procedure is connected by way of an auxiliary switching path (3) parallel to the main switching path (1), and is disconnected after closure of this by the opening of the auxiliary switching path (3), until switching-on of the main switching path (1) again, a movable auxiliary switching pin (3a) of the auxiliary switching path (3) which is spring-loaded in the disconnection direction, and a connecting rod (5) which is articulated to the auxiliary switching pin (3a) and to a rotatably- mounted crank drive (7), of the drive element, characterised in that the crank drive (7) has a slide or coulisse (10)'which enforces movement of the hinge (9) of the connecting rod (5) associated therewith, and which consists of a part (10a) which is concentric whith the shaft (6) of the crank gear (7) and of a rectilinear part (10b) joined thereto, which is mounted in front in the connection direction and which is bent approximately radially outwards. --
2. A high-voltage power switch according to Claim 1, characterised in that the slide or coulisse (10) has parallel guide surfaces, for the hinge (9) of the connecting rod (5).
3. A high-voltage power switch according to Claim 1, characterised in that, at its ends the slide or coulisse (10) is provided with damping pads (13).
4. A high-voltage power switch according to Claim 1, characterised in that to the rectilinear part (10b) of the slide or coulisse (10), there is assigned a projection (12) which acts on the connecting rod (5) as a trigger element.
5. A high-voltage power switch according to Claim 1, characterised in that the slide or coulisse (10) is provided with a hub (15) which forms the stop-surface and guide-surface for the connecting rod (5).
EP80730071A 1979-12-07 1980-11-11 High voltage power circuit breaker Expired EP0031791B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80730071T ATE3482T1 (en) 1979-12-07 1980-11-11 HIGH VOLTAGE CIRCUIT BREAKER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792949753 DE2949753A1 (en) 1979-12-07 1979-12-07 HIGH VOLTAGE CIRCUIT BREAKERS
DE2949753 1979-12-07

Publications (2)

Publication Number Publication Date
EP0031791A1 EP0031791A1 (en) 1981-07-08
EP0031791B1 true EP0031791B1 (en) 1983-05-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP80730071A Expired EP0031791B1 (en) 1979-12-07 1980-11-11 High voltage power circuit breaker

Country Status (10)

Country Link
US (1) US4365128A (en)
EP (1) EP0031791B1 (en)
JP (1) JPS5693226A (en)
AT (1) ATE3482T1 (en)
BR (1) BR8007960A (en)
CA (1) CA1155888A (en)
DE (1) DE2949753A1 (en)
IN (1) IN152535B (en)
MX (1) MX147636A (en)
NO (1) NO154819C (en)

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CH660931A5 (en) * 1983-03-28 1987-05-29 Bbc Brown Boveri & Cie HIGH VOLTAGE SWITCH.
DE3664077D1 (en) * 1985-03-27 1989-07-27 Bbc Brown Boveri & Cie High tension circuit breaker with closing resistor
JPH02116197U (en) * 1989-03-03 1990-09-18
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DE19906156C2 (en) * 1999-02-10 2001-12-13 Siemens Ag Vacuum switch with at least one vacuum interrupter
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US20040212353A1 (en) * 2003-04-25 2004-10-28 Siemens Westinghouse Power Corporation Use of a closing impedance to minimize the adverse impact of out-of-phase generator synchronization
DE102005008313A1 (en) 2005-02-17 2006-08-24 Siemens Ag Switching resistor for an electrical switching device
DE102006031220A1 (en) * 2006-06-30 2008-01-03 Siemens Ag Gear arrangement for driving an electrical switching contact
DE202011106188U1 (en) * 2011-09-30 2013-01-09 Fritz Driescher KG Spezialfabrik für Elektrizitätswerksbedarf GmbH & Co Schalterpoleinheit
DE102018205910A1 (en) * 2018-04-18 2019-10-24 Siemens Aktiengesellschaft High-voltage circuit breaker with Einschaltwiderstandsanordnung and coupling device
CN114783818B (en) * 2022-05-19 2025-10-10 天津平高智能电气有限公司 Spring operating mechanism of ring main unit based on vertical transmission connecting rod

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US3763340A (en) * 1971-02-12 1973-10-02 Siemens Ag High-voltage circuit breaker equipped with means for placing a resistor in parallel with the breaker contact during breaker closing operations

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Publication number Priority date Publication date Assignee Title
DE1939555A1 (en) * 1968-08-09 1970-02-12 Magrini Fabbriche Riunite Marg Method and device for applying a voltage to a line by means of a module switch and an on-resistance
US3763340A (en) * 1971-02-12 1973-10-02 Siemens Ag High-voltage circuit breaker equipped with means for placing a resistor in parallel with the breaker contact during breaker closing operations

Also Published As

Publication number Publication date
JPS6359490B2 (en) 1988-11-18
US4365128A (en) 1982-12-21
MX147636A (en) 1983-01-03
JPS5693226A (en) 1981-07-28
CA1155888A (en) 1983-10-25
EP0031791A1 (en) 1981-07-08
NO803647L (en) 1981-06-09
ATE3482T1 (en) 1983-06-15
IN152535B (en) 1984-02-04
DE2949753A1 (en) 1981-06-11
NO154819B (en) 1986-09-15
DE2949753C2 (en) 1988-08-04
BR8007960A (en) 1981-06-23
NO154819C (en) 1986-12-29

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