EP0203373A1 - Isolating switch - Google Patents

Isolating switch Download PDF

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Publication number
EP0203373A1
EP0203373A1 EP86105619A EP86105619A EP0203373A1 EP 0203373 A1 EP0203373 A1 EP 0203373A1 EP 86105619 A EP86105619 A EP 86105619A EP 86105619 A EP86105619 A EP 86105619A EP 0203373 A1 EP0203373 A1 EP 0203373A1
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EP
European Patent Office
Prior art keywords
contact
separating knives
disconnector according
switch
knives
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.)
Withdrawn
Application number
EP86105619A
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German (de)
French (fr)
Inventor
Jürg Ischi
Jörg Peter
Stanislaus Ruffieux
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.)
BBC Brown Boveri AG Switzerland
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BBC Brown Boveri AG Switzerland
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 BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Publication of EP0203373A1 publication Critical patent/EP0203373A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/42—Knife-and-clip contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5833—Electric connections to or between contacts; Terminals comprising an articulating, sliding or rolling contact between movable contact and terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/42—Knife-and-clip contacts
    • H01H2001/425—Knife-and-clip contacts with separate contact pressure spring confined between two contact knifes and urging the knifes onto a mating contact

Definitions

  • the invention is based on a disconnector according to the first part of patent claim 1.
  • Such a switch is known for example from Swiss patent 441 466.
  • the known switch has a double separating knife which can be rotated about a fixed axis and which, in the switched-on position, comprises a convex fixed contact from the outside. With this switch, the double separating knife is spread out by means of a wedge during a switching operation, which enables safe switching with minimal drive torque.
  • the invention as characterized in the claims, achieves the object of specifying a disconnector of the generic type, in which a safe switching is ensured in a simple manner.
  • the disconnector according to the invention is distinguished by the fact that it is extremely cost-effective when the current is routed optimally. Its functionality is also guaranteed outside the manufacturing and installation-related tolerance range of comparable switches.
  • the isolating switch shown in FIG. 1 and preferably provided for switching medium voltages has a fixed contact 1 shown in dashed lines and a movable contact 3 rotatable about a fixed axis 2.
  • the fixed contact 1 is electrically conductively connected directly to a power connection 4, while the movable contact 3 is in an electrically conductive connection to a power connection 7 via a fixed ball contact 5 and a contact carrier 6 holding the ball contact 5.
  • An actuating rod 8 made of insulating material is articulated in the center of the movable contact 3, which in turn is articulated on a crank arm 9 of a crank which can be rotated about a fixed axis 10.
  • the structure of the fixed 1 and the movable contact 3 and the ball contact 5 are shown in Figures 2 to 4. It can be seen from these figures that the fixed contact 1 is spherical and has contact surfaces oriented in the direction of movement of the movable contact 1.
  • the movable contact 3 is designed as a double knife and contains two separating knives 12, 13.
  • the separating knives 12, 13 are held together under pressure by means of an elastic tensioning element 14 attached approximately the same distance from the ends of the separating knives 12, 13.
  • the tensioning element 14 contains a screw 16 guided essentially parallel to the axis 2 and secured by a nut 15, and two compression springs biased by screw 16 and nut 15 and supported on the separating knives 12 and 13, respectively 17 and 18.
  • These compression springs are each housed in one of two material recesses 19, 20 embedded in the outer sides of the separating knives 12, 13.
  • the screw 16 also serves as a bearing for the actuating rod 8 which is rotatably mounted between the two separating knives 12, 13.
  • two stops 21 and 22 are provided in the region of the free end of the movable contact 3 facing away from the axis 2, which stops the movement of both separating knives 12, 13 caused by the tensioning element 14 against one another when the disconnector is open limit in such a way that there is sufficient distance between their free ends in order to safely drive onto the fixed contact 1 when the disconnector is switched on.
  • the ball contact 5 has two ring-shaped closed contact surfaces 23, 24 lying on the surface of a ball and two guide pins 25 and 26 adjoining the one of the contact surfaces 23 and 24. These guide pins 25, 26 extend in opposite directions along the axis 2 running through the center of the ball.
  • the ball contact 5 is mounted in two bearing pans, each of which is embedded in one of the two mutually facing sides of the separating knives 12, 13.
  • Fig. 3 one of these bearing pans is shown enlarged.
  • the bearing socket shown has a contact surface 27 which is adapted to the contact surface 24 of the ball contact 5, supports it and is designed as a spherical zone, and a cylindrical depression 28 which adjoins the narrow edge of this contact surface 27 and serves to receive the guide pin 26.
  • the guide pin 26 is clearly slightly spaced on all sides from the boundary of the recess 28, so that the axis 2 is rotated and thus the two separating knives 12, 13 are pivoted on all sides is possible from the centered position by an angle ⁇ of a few degrees (dashed axis 2).
  • the two guide pins 25, 26, on the one hand enable the two separating knives 12, 13 to rotate securely when switching and, on the other hand, prevent the ball contact 5 from possibly disengaging from the bearing pans embedded in the separating knives 12, 13. If the two separating knives 12, 13 are moved to the fixed contact 1 (FIG. 4) when switched on or to the grounding contact 11 when grounding, the pivoting of the two separating knives 12 and 13 by the angle .alpha. Is possible regardless of installation and manufacturing tolerances of the contacts always linear contacting of fixed contact 1 and separating knives 12 and 13. It is therefore possible to produce the separating knives 12, 13 as inexpensive pressed bodies.
  • the required contact force for the current transfer from the fixed contact 1 to the separating knife 12, 13 or from the separating knife 12, 13 to the ball contact 5 is generated by the elastic clamping element 14.

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  • Contacts (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Abstract

The isolating switch, provided preferably for switching medium voltages, has a fixed contact (1) and a moving contact (3) which can rotate about an axis (2). This switch is intended to ensure a reliable current path at all times between its two current connections with a comparatively small number of junctions. This is achieved by the fixed contact (1) being designed such that it is cambered and has contact surfaces aligned in the direction of rotation of the moving contact (3), and by the moving contact (3) containing two isolating blades (12, 13), arranged parallel to one another and subjected to a retaining force by an elastic clamping element (14). In each case one of two bushings is let into the mutually facing sides of the isolating blades (12, 13), which bushings are used for mounting on and for making contact with a fixed spherical contact (5) through the centre of which passes the axis (2). This arrangement allows the two isolating blades (12, 13) to swivel in all directions and thus provides an optimum current path when the isolating switch is switched on. <IMAGE>

Description

Bei der Erfindung wird ausgegangen von einem Trennschalter gemäss dem ersten Teil von Patentanspruch 1.The invention is based on a disconnector according to the first part of patent claim 1.

Ein solcher Schalter ist etwa aus dem schweizerischen Patent 441 466 bekannt. Der bekannte Schalter weist ein um eine feststehende Achse drehbares Doppeltrennmesser auf, welches in der Einschaltposition einen ballig ausgebildeten feststehenden Kontakt von aussen umfasst. Bei diesem Schalter wird bei einem Schaltvorgang das Doppeltrennmesser mittels eines Keils aufgespreizt, wodurch mit minimalem Antriebsmoment ein sicheres Schalten ermöglicht wird.Such a switch is known for example from Swiss patent 441 466. The known switch has a double separating knife which can be rotated about a fixed axis and which, in the switched-on position, comprises a convex fixed contact from the outside. With this switch, the double separating knife is spread out by means of a wedge during a switching operation, which enables safe switching with minimal drive torque.

Die Erfindung, wie sie in den Ansprüchen gekennzeichnet ist, löst die Aufgabe, einen Trennschalter der gattungsgemässen Art anzugeben, bei dem in einfacher Weise ein sicheres Schalten gewährleistet ist.The invention, as characterized in the claims, achieves the object of specifying a disconnector of the generic type, in which a safe switching is ensured in a simple manner.

Diese Aufgabe wird durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale gelöst. Der erfindungsgemässe Trennschalter zeichnet sich dadurch aus, dass er bei optimaler Stromführung äusserst kostengünstig ist. Seine Funktionsweise ist auch noch ausserhalb des herstellungs- und einbaubedingten Toleranzbereiches vergleichbarer Schalter gewährleistet.This object is achieved by the features specified in the characterizing part of claim 1. The disconnector according to the invention is distinguished by the fact that it is extremely cost-effective when the current is routed optimally. Its functionality is also guaranteed outside the manufacturing and installation-related tolerance range of comparable switches.

Vorteilhafte Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen 2 bis 7 angegeben.Advantageous developments of the invention are specified in the dependent claims 2 to 7.

Die Erfindung wird nachfolgenden anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.The invention is explained in more detail below with reference to an embodiment shown in the drawing.

Hierbei zeigt:

  • Fig. 1 eine Aufsicht auf einen Trennschalter nach der Erfindung,
  • Fig. 2 eine Aufsicht auf einen Schnitt längs II-II durch den Trennschalter gemäss Fig. 1,
  • Fig. 3 einen vergrösserten-Ausschnitt III aus Fig. 2, und
  • Fig. 4 eine Aufsicht auf einen Schnitt längs IV-IV durch den Trennschalter gemäss Fig. 1.
Here shows:
  • 1 is a plan view of a circuit breaker according to the invention,
  • 2 is a plan view of a section along II-II through the disconnector according to FIG. 1,
  • 3 shows an enlarged detail III from FIG. 2, and
  • 4 is a plan view of a section along IV-IV through the disconnector according to FIG. 1.

Der in Fig. 1 dargestellte und vorzugsweise zum Schalten von Mittelspannungen vorgesehene Trennschalter weist einen gestrichelt dargestellten feststehenden Kontakt 1 sowie einen um eine feststehende Achse 2 drehbaren beweglichen Kontakt 3 auf. Der feststehende Kontakt 1 ist unmittelbar mit einem Stromanschluss 4 elektrisch leitend verbunden, während der bewegliche Kontakt 3 über einen feststehenden Kugelkontakt 5 und einen den Kugelkontakt 5 haltenden Kontaktträger 6 mit einem Stromanschluss 7 in elektrisch leitender Verbindung steht. Am beweglichen Kontakt 3 ist mittig eine Betätigungsstange 8 aus Isolierstoff angelenkt, welche ihrerseits an einen Kurbelarm 9 einer um eine feststehende Achse 10 drehbaren Kurbel angelenkt ist.The isolating switch shown in FIG. 1 and preferably provided for switching medium voltages has a fixed contact 1 shown in dashed lines and a movable contact 3 rotatable about a fixed axis 2. The fixed contact 1 is electrically conductively connected directly to a power connection 4, while the movable contact 3 is in an electrically conductive connection to a power connection 7 via a fixed ball contact 5 and a contact carrier 6 holding the ball contact 5. An actuating rod 8 made of insulating material is articulated in the center of the movable contact 3, which in turn is articulated on a crank arm 9 of a crank which can be rotated about a fixed axis 10.

Wird - wie in Fig. 1 durch einen Pfeil dargestellt ist - der Kurbelarm 9 im Gegenuhrzeigersinn gedreht, so wird der bewegliche Kontakt 3 aus der in Fig. 1 mit E bezeichneten Einschaltposition des Trennschalters durch Drehung um die Achse 2 zunächst in eine Ausschaltposition A des Trennschalters geführt und danach durch Kontaktierung eines Erdungskontaktes 11 schliesslich in einer Erdungsposition G geerdet.If - as shown in Fig. 1 by an arrow - the crank arm 9 is rotated counterclockwise, the movable contact 3 from the switch position designated E in Fig. 1 by rotation about the axis 2 is first in a switch-off position A of Disconnector and then finally grounded in a grounding position G by contacting a grounding contact 11.

Der Aufbau des feststehenden 1 und des beweglichen Kontaktes 3 sowie des Kugelkontaktes 5 sind in den Figuren 2 bis 4 angegeben. Aus diesen Figuren ist ersichtlich, dass der feststehenden Kontakt 1 ballig ausgebildet ist und in Bewegungsrichtung des beweglichen Kontaktes 1 ausgerichtete Kontaktflächen aufweist. Der bewegliche Kontakt 3 ist als Doppelmesser ausgebildet und enthält zwei Trennmesser 12, 13. Die Trennmesser 12, 13 sind mittels eines etwa gleich weit von den Enden der Trennmesser 12, 13 angebrachten elastischen Spannelementes 14 unter Druck zusammengehalten. Das Spannelement 14 enthält eine im wesentlichen parallel zur Achse 2 geführte und von einer Mutter 15 gesicherte Schraube 16 sowie zwei durch Schraube 16 und Mutter 15 vorgespannte und auf den Trennmessern 12 bzw. 13 abgestützte Druckfedern 17 bzw. 18. Diese Druckfedern sind jeweils in einer von zwei in die Aussenseiten der Trennmesser 12, 13 eingelassenen Materialausnehmungen 19, 20 untergebracht. Die Schraube 16 dient zugleich als Lagerstelle für die zwischen beiden Trennmessern 12, 13 drehbar gelagerte Betätigungsstange 8.The structure of the fixed 1 and the movable contact 3 and the ball contact 5 are shown in Figures 2 to 4. It can be seen from these figures that the fixed contact 1 is spherical and has contact surfaces oriented in the direction of movement of the movable contact 1. The movable contact 3 is designed as a double knife and contains two separating knives 12, 13. The separating knives 12, 13 are held together under pressure by means of an elastic tensioning element 14 attached approximately the same distance from the ends of the separating knives 12, 13. The tensioning element 14 contains a screw 16 guided essentially parallel to the axis 2 and secured by a nut 15, and two compression springs biased by screw 16 and nut 15 and supported on the separating knives 12 and 13, respectively 17 and 18. These compression springs are each housed in one of two material recesses 19, 20 embedded in the outer sides of the separating knives 12, 13. The screw 16 also serves as a bearing for the actuating rod 8 which is rotatably mounted between the two separating knives 12, 13.

Auf den einander zugewandten Innenflächen der beiden Trennmesser 12, 13 sind im Bereich des von der Achse 2 abgewandten freien Endes des beweglichen Kontaktes 3 zwei Anschläge 21 und 22 vorgesehen, welche die durch das Spannelement 14 hervorgerufenen Bewegung beider Trennmesser 12, 13 gegeneinander bei geöffnetem Trennschalter derart begrenzen, dass zwischen deren freien Enden ausreichend Abstand verbleibt, um beim Einschalten des Trennschalters sicher auf den feststehenden Kontakt 1 aufzufahren.On the mutually facing inner surfaces of the two separating knives 12, 13, two stops 21 and 22 are provided in the region of the free end of the movable contact 3 facing away from the axis 2, which stops the movement of both separating knives 12, 13 caused by the tensioning element 14 against one another when the disconnector is open limit in such a way that there is sufficient distance between their free ends in order to safely drive onto the fixed contact 1 when the disconnector is switched on.

Der Kugelkontakt 5 weist zwei auf der Oberfläche einer Kugel liegende, ringförmig geschlossene Kontaktflächen 23, 24 sowie zwei an die eine der Kontaktfläche 23 bzw. 24 anschliessende Führungszapfen 25 bzw. 26 auf. Diese Führungszapfen 25, 26 sind längs der durch das Zentrum der Kugel verlaufende Achse 2 in gegenläufigen Richtungen erstreckt. Der Kugelkontakt 5 ist in zwei Lagerpfannen gelagert, welche jeweils in eine der beiden einander zugewandten Seiten der Trennmesser 12, 13 eingelassen sind.The ball contact 5 has two ring-shaped closed contact surfaces 23, 24 lying on the surface of a ball and two guide pins 25 and 26 adjoining the one of the contact surfaces 23 and 24. These guide pins 25, 26 extend in opposite directions along the axis 2 running through the center of the ball. The ball contact 5 is mounted in two bearing pans, each of which is embedded in one of the two mutually facing sides of the separating knives 12, 13.

In Fig. 3 ist eine dieser Lagerpfannen vergrössert dargestellt. Die dargestellte Lagerpfanne weist eine an die Kontaktfläche 24 des Kugelkontaktes 5 angepasste, diesen abstützende und als Kugelzone ausgebildete Kontaktfläche 27 sowie eine am schmalen Rand dieser Kontaktfläche 27 anschliessende zylinderförmige Vertiefung 28 auf, welche der Aufnahme des Führungszapfens 26 dient. Sind die beiden Trennmesser 12, 13 hinsichtlich der Achse 2 zentriert (ausgezogene Achse 2), so ist der Führungszapfen 26 ersichtlich allseits geringfügig von der Begrenzung der Vertiefung 28 beabstandet, so dass eine Verdrehung der Achse 2 und damit eine allseitig Schwenkung der beiden Trennmesser 12, 13 um einen Winkel αvon einigen Grad aus der zentrierten Lage möglich ist (strichlierte Achse 2).In Fig. 3 one of these bearing pans is shown enlarged. The bearing socket shown has a contact surface 27 which is adapted to the contact surface 24 of the ball contact 5, supports it and is designed as a spherical zone, and a cylindrical depression 28 which adjoins the narrow edge of this contact surface 27 and serves to receive the guide pin 26. Are the If the two separating knives 12, 13 are centered with respect to the axis 2 (extended axis 2), the guide pin 26 is clearly slightly spaced on all sides from the boundary of the recess 28, so that the axis 2 is rotated and thus the two separating knives 12, 13 are pivoted on all sides is possible from the centered position by an angle α of a few degrees (dashed axis 2).

Bei einem Schaltvorgang ermöglichen die beiden Führungszapfen 25, 26 einerseits eine sichere Drehung der beiden Trennmesser 12, 13 beim Schalten und verhindern andererseits ein gegebenenfalls mögliches Ausklinken des Kugelkontaktes 5 aus den in die Trennmesser 12, 13 eingelassenen Lagerpfannen. Werden die beiden Trennmesser 12, 13 beim Einschalten auf den feststehenden Kontakt 1 (Fig. 4) bzw. beim Erden auf den Erdungskontakt 11 gefahren, so ermöglicht die um den Winkel α schwenkbare Lagerung der beiden Trennmesser 12 und 13 unabhängig von Einbau-und Herstellungstoleranzen der Kontakte stets linienförmige Kontaktierungen von feststehendem Kontakt 1 und Trennmessern 12 und 13. Daher ist es möglich, die Trennmesser 12, 13 als preiswerte Presskörper herzustellen. Die erforderliche Kontaktkraft für den Stromübergang von dem feststehenden Kontakt 1 auf die Trennmesser 12, 13 bzw. von den Trennmessern 12, 13 auf den Kugelkontakt 5 wird hierbei durch das elastische Spannelement 14 erzeugt.During a switching operation, the two guide pins 25, 26, on the one hand, enable the two separating knives 12, 13 to rotate securely when switching and, on the other hand, prevent the ball contact 5 from possibly disengaging from the bearing pans embedded in the separating knives 12, 13. If the two separating knives 12, 13 are moved to the fixed contact 1 (FIG. 4) when switched on or to the grounding contact 11 when grounding, the pivoting of the two separating knives 12 and 13 by the angle .alpha. Is possible regardless of installation and manufacturing tolerances of the contacts always linear contacting of fixed contact 1 and separating knives 12 and 13. It is therefore possible to produce the separating knives 12, 13 as inexpensive pressed bodies. The required contact force for the current transfer from the fixed contact 1 to the separating knife 12, 13 or from the separating knife 12, 13 to the ball contact 5 is generated by the elastic clamping element 14.

Claims (6)

1. Dreistellungs-Trennschalter mit einem ballig ausgebildeten feststehenden Kontakt (1) und einem um eine feststehende Achse (2) drehbaren beweglichen Kontakt (3), der von zwei parallel zueinander angeordneten und von mindestens einem Spannelement (14) mit Haltekraft beaufschlagten Trennmessern (12, 13) gebildet ist, dadurch gekennzeichnet, dass in die einander zugewandten Seiten der Trennmesser (12, 13) jeweils eine von zwei Lagerpfannen eingelassen ist, welche der Lagerung und der Kontaktierung eines zentral von der feststehenden Achse (2) durchsetzten Kugelkontaktes (14) dienen und jeweils eine an die Oberfläche des Kugelkontaktes (5) angepasste und als Kugelzone ausgebildete Kontaktfläche (27) aufweisen sowie eine an diese Kontaktfläche (27) anschliessende Vertiefung (28) zur Aufnahme eines am Kugelkontakt (5) angebrachten Führungszapfens (26).1. Three-position isolating switch with a spherical fixed contact (1) and a movable contact (3) which can be rotated about a fixed axis (2) and which has two separating knives (12) arranged parallel to one another and loaded with holding force by at least one clamping element (14) , 13), characterized in that in each case one of two bearing pans is let into the mutually facing sides of the separating knives (12, 13), which supports the bearing and the contacting of a ball contact (14) centrally penetrated by the fixed axis (2). serve and each have a contact surface (27) adapted to the surface of the ball contact (5) and designed as a ball zone, and a depression (28) adjoining this contact surface (27) for receiving a guide pin (26) attached to the ball contact (5). 2. Dreistellungs-Trennschalter nach Anspruch 1, dadurch gekennzeichnet, dass der Führungszapfen (26) im wesentlichen zylinderförmig ausgebildet und bei zentrierten Trennmessern (12, 13) allseits von den Begrenzungen der Vertiefung (28) beabstandet ist.2. Three-position disconnector according to claim 1, characterized in that the guide pin (26) is substantially cylindrical and is spaced on all sides from the boundaries of the recess (28) in the case of centered separating knives (12, 13). 3. Dreistellungs-Trennschalter nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass das Spannelement (14) von einer im wesentlichen parallel zur feststehenden Achse (2) geführten Schraube (16) sowie zwei von der Schraube (16) verspannten Druckfeder (17, 18) gebildet ist.3. Three-position disconnector according to one of claims 1 to 2, characterized in that the clamping element (14) from a substantially parallel to the fixed axis (2) guided screw (16) and two of the screw (16) braced compression spring (17th , 18) is formed. 4. Dreistellungs-Trennschalter nach Anspruch 3, dadurch gekennzeichnet, dass jede der beiden Druckfedern (17, 18) in einer von zwei Materialausnehmungen (19, 20) untergebracht ist, welche jeweils in einer der beiden voneinander abgewandten Aussenseiten der Trennmesser (12, 13) eingelassen sind.4. Three-position disconnector according to claim 3, characterized in that each of the two compression springs (17, 18) is accommodated in one of two material recesses (19, 20), each of which is embedded in one of the two outer sides of the separating knives (12, 13) facing away from one another. 5. Dreistellungs-Trennschalter nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, dass die Schraube (16) Lagerstelle einer Betätigungsstange (8) des Antriebs des beweglichen Kontaktes (3) ist.5. Three-position disconnector according to one of claims 3 or 4, characterized in that the screw (16) bearing point of an actuating rod (8) of the drive of the movable contact (3). 6. Dreistellungs-Trennschalter nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass auf den einander zugewandten Innenseiten der beiden Trennmesser (12, 13) Anschläge (21, 22) angeordnet sind, welche in der Ausschaltposition (A) des Trennschalters aneinander anschlagen.6. Three-position disconnector according to one of claims 1 to 5, characterized in that stops (21, 22) are arranged on the mutually facing inner sides of the two disconnecting knives (12, 13), which abut each other in the switch-off position (A) of the disconnector .
EP86105619A 1985-05-20 1986-04-23 Isolating switch Withdrawn EP0203373A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH213585 1985-05-20
CH2135/85 1985-05-20

Publications (1)

Publication Number Publication Date
EP0203373A1 true EP0203373A1 (en) 1986-12-03

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EP86105619A Withdrawn EP0203373A1 (en) 1985-05-20 1986-04-23 Isolating switch

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EP (1) EP0203373A1 (en)
JP (1) JPS61267209A (en)
ES (1) ES296972Y (en)

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EP0485306A1 (en) * 1990-11-06 1992-05-13 Schneider Electric Sa Multiphase rotating switch
WO2002080206A2 (en) * 2001-03-30 2002-10-10 Grupo Ormazabal, S.A. Contact blade block for medium-voltage short-circuit switches
EP1688979A3 (en) * 2005-02-08 2007-08-22 General Electric Canada Disconnect switch
WO2010106126A1 (en) 2009-03-20 2010-09-23 Areva T&D Canada Inc. Simplified conductor for an electric apparatus, and electric apparatus comprising at least one such conductor
WO2011018810A1 (en) * 2009-08-13 2011-02-17 Areva T&D Italy S.P.A. Two-column electrical disconnector
US9396895B2 (en) 2011-10-18 2016-07-19 Alstom Technology Ltd. Lightweight conductor for electrical equipment and electrical equipment including at least one such conductor
CN110853968A (en) * 2018-08-21 2020-02-28 西安西电高压开关有限责任公司 Isolating switch and sealing reset device of static contact of isolating switch

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CN105206464B (en) * 2015-08-17 2017-12-15 平高集团威海高压电器有限公司 Three-station isolating grounding switch and the GIS device using the switch

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US1774377A (en) * 1928-07-19 1930-08-26 William R Huttinger Switch contact
DE1159069B (en) * 1960-10-12 1963-12-12 Sachsenwerk Licht & Kraft Ag Electric switch with swiveling double cutting blades
CH441466A (en) * 1965-09-09 1967-08-15 Siemens Ag Disconnector
FR2296252A1 (en) * 1974-12-23 1976-07-23 Acec Fixed and free elements for transformer connectors - sprung contacts on elliptical fixed boss give rapid reconnection

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0485306A1 (en) * 1990-11-06 1992-05-13 Schneider Electric Sa Multiphase rotating switch
WO2002080206A2 (en) * 2001-03-30 2002-10-10 Grupo Ormazabal, S.A. Contact blade block for medium-voltage short-circuit switches
WO2002080206A3 (en) * 2001-03-30 2002-12-05 Grupo Ormazabal Sa Contact blade block for medium-voltage short-circuit switches
EP1688979A3 (en) * 2005-02-08 2007-08-22 General Electric Canada Disconnect switch
WO2010106126A1 (en) 2009-03-20 2010-09-23 Areva T&D Canada Inc. Simplified conductor for an electric apparatus, and electric apparatus comprising at least one such conductor
WO2011018810A1 (en) * 2009-08-13 2011-02-17 Areva T&D Italy S.P.A. Two-column electrical disconnector
CN102089844B (en) * 2009-08-13 2014-12-17 阿海珐输配电意大利股份公司 Two-column electrical disconnector
US9396895B2 (en) 2011-10-18 2016-07-19 Alstom Technology Ltd. Lightweight conductor for electrical equipment and electrical equipment including at least one such conductor
CN110853968A (en) * 2018-08-21 2020-02-28 西安西电高压开关有限责任公司 Isolating switch and sealing reset device of static contact of isolating switch
CN110853968B (en) * 2018-08-21 2021-11-19 西安西电高压开关有限责任公司 Isolating switch and sealing reset device of static contact of isolating switch

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Publication number Publication date
ES296972U (en) 1988-03-01
JPS61267209A (en) 1986-11-26
ES296972Y (en) 1988-11-16

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