WO1992018997A1 - Commande d'un pole d'interrupteur - Google Patents

Commande d'un pole d'interrupteur Download PDF

Info

Publication number
WO1992018997A1
WO1992018997A1 PCT/AT1992/000046 AT9200046W WO9218997A1 WO 1992018997 A1 WO1992018997 A1 WO 1992018997A1 AT 9200046 W AT9200046 W AT 9200046W WO 9218997 A1 WO9218997 A1 WO 9218997A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive
pole
lifting element
bearing
bearings
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.)
Ceased
Application number
PCT/AT1992/000046
Other languages
German (de)
English (en)
Inventor
Viktor Jung
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.)
Andritz Hydro GmbH Austria
Original Assignee
Andritz Hydro GmbH Austria
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 Andritz Hydro GmbH Austria filed Critical Andritz Hydro GmbH Austria
Publication of WO1992018997A1 publication Critical patent/WO1992018997A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • H01H33/662—Housings or protective screens
    • H01H33/66238—Specific bellows details
    • H01H2033/66246—Details relating to the guiding of the contact rod in vacuum switch belows
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms

Definitions

  • Circuit breakers serve for the automatic switching on and off of any currents up to the nominal switching capacity of the circuit breaker. As with all switching elements used in networks, a high degree of reliability is required here too. This requirement is one of the most important criteria when designing the individual parts of the service provider.
  • the invention is therefore based on the object of providing a drive for a pole of a circuit breaker which meets all the requirements for the operational reliability of switching elements in networks and can be produced and operated as economically as possible.
  • This drive of a pole of a Lei ⁇ tungss ⁇ halter is characterized in that between the pole and the Vorhubelement a known Isolier ⁇ rod is arranged, and that a first articulated connection between the insulating rod and the Vorhubel ⁇ ement by means of a first bearing in one Movement direction of the insulating rod arranged in parallel, first elongated hole, and a second articulated connection between the pre-lifting element and a linkage lever is guided in a guide cheek in a second elongated hole arranged at right angles to the first elongated hole.
  • Another embodiment of the invention provides that at the dead center of the switching movement, the first and the second bearings are located a few millimeters before the end of the respective assigned first or second elongated hole.
  • the advantage of this configuration is that the articulation lever moves over the dead center when switching on and the bearings snap into the ends of the elongated holes. A separate latching of the linkage is not necessary, which on the one hand rules out an accident in this area and on the other hand increases the economy.
  • the first and the second articulated connection are equipped on both sides with two first and two second bearings, respectively, and these bearings are in associated elongated holes which are arranged in a first and a second, mirror-inverted to one another, Guide cheek are arranged, guided.
  • the advantage of this development is the bilateral mounting of the articulated connections in the guide cheeks. This ensures exact guidance of the drive linkage and centering of the contact force on the central area of the contact surface of the switch contact.
  • Another embodiment of the invention is that at least the first or the second articulated connection is equipped with ball bearings.
  • the advantage of this configuration is that the friction of the bearings in the elongated holes is limited to a minimum and therefore less force is required for the switching process.
  • the border of the first or second elongated hole is the / 18997 _-4. _- PCT / AT92 / 00046
  • assigned bearing is designed as a ball bearing, made of abrasion-resistant material, preferably made of phosphor bronze. This feature has the advantage that the service life of the bearing management is very long, despite frequent switching cycles.
  • the first and the second guide cheek are designed as a cast part, preferably as a brass part. This further training offers the advantage of an exact and economical production of the guide cheeks.
  • FIGS. 1.1 and 1.2 The invention is illustrated below with the aid of the drawings in FIGS. 1.1 and 1.2, with FIG. 1.1 being a side view of FIG. 1.2.
  • an insulating rod 12 can be seen which drives the movable switching contact directly.
  • This insulating rod 12 is connected to the pre-lifting element 1 by means of a first articulated connection 4.
  • the first articulated connection 4 is equipped at both ends with bearings 5 which slide in the first elongated holes 6, which are arranged parallel to the direction of movement of the insulating rod, in the two guide cheeks 11a, 11b.
  • the pre-lifting element 1 is equipped with a contact force spring 2.
  • a connection to the rest of the drive linkage is established via the articulation lever 3, which is connected to the lower end of the pre-lifting element 1 by means of a second articulated connection 7.
  • the second articulated connection 7 is equipped at both ends with ball bearings 8 which slide in the second elongated holes 9 in the two guide cheeks 11a, 11b.
  • the border 10 of the second elongated holes 9 are made of an abrasion-resistant material, preferably of phosphor bronze.
  • 1.1 shows the drive linkage in the switched-off state. If the pole is switched on, the second bearing 8 moves to the left in the associated elongated hole 9 and the first bearing 5 in the elongated hole 6 moves upwards, the pre-lifting element rising. The maximum contact force is reached at dead center 13 of the switching movement.
  • the switched-on state can then be seen in FIG. 1.2.
  • the pre-lifting element 1 has moved beyond the dead center 13, the first bearings 5 and the second bearings 8 being latched into the respective ends of the elongated holes 6, 9.
  • the pre-lifting element 1 snaps into place, the remaining drive linkage and the drive are completely relieved.
  • the contact force is only applied by the contact force spring 2 of the pre-lifting element 1.

Landscapes

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

Abstract

L'invention vise à réaliser une commande d'un pôle d'interrupteur répondant à toutes les normes de fiabilité des éléments de commutation dans les réseaux. La tige isolante (12) est reliée à l'élément de pré-élévation par l'intermédiaire d'une première articulation (4). Cette articulation (4) comporte à ses deux extrémités, des coussinets (5) qui coulissent dans les premiers trous longitudinaux desdeux flasques de guidage (11a, 11b). L'élément de pré-élévation (1) est muni d'un ressort de contact (2). Le raccordement à la commande est réalisé par l'intermédiaire du levier articulé (3) qui est relié à l'élément de pré-élévation (1) par une seconde articulation (7). Cette seconde articulation (7) est munie des deux côtés, de roulements à billes (8) qui coulissent dans les seconds trous longitudinaux (9) des deux flasques de guidage (11a, 11b). Cette invention permet, pour la toute première fois, de réaliser une commande qui n'a pas à supporter de forces lorsque le pôle est enclenché. La force de contact ne s'applique qu'à l'élément de pré-élévation et à son ressort de contact.
PCT/AT1992/000046 1991-04-09 1992-04-02 Commande d'un pole d'interrupteur Ceased WO1992018997A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT74291 1991-04-09
ATA742/91 1991-04-09

Publications (1)

Publication Number Publication Date
WO1992018997A1 true WO1992018997A1 (fr) 1992-10-29

Family

ID=3498606

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1992/000046 Ceased WO1992018997A1 (fr) 1991-04-09 1992-04-02 Commande d'un pole d'interrupteur

Country Status (1)

Country Link
WO (1) WO1992018997A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8109229U1 (de) * 1981-03-28 1981-08-06 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Antriebsvorrichtung
DE3147016A1 (de) * 1981-11-27 1983-06-01 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Hochspannungsschalter
EP0172986A2 (fr) * 1984-08-31 1986-03-05 Sprecher Energie AG Dispositif de commande pour un interrupteur électrique à contacts à pression, en particulier pour un interrupteur sous vide
DE3906786A1 (de) * 1989-03-03 1990-09-13 Sachsenwerk Ag Antriebsmechanismus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8109229U1 (de) * 1981-03-28 1981-08-06 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Antriebsvorrichtung
DE3147016A1 (de) * 1981-11-27 1983-06-01 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Hochspannungsschalter
EP0172986A2 (fr) * 1984-08-31 1986-03-05 Sprecher Energie AG Dispositif de commande pour un interrupteur électrique à contacts à pression, en particulier pour un interrupteur sous vide
DE3906786A1 (de) * 1989-03-03 1990-09-13 Sachsenwerk Ag Antriebsmechanismus

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