EP0385265B1 - Spring motor driving mechanism for a circuit breaker - Google Patents

Spring motor driving mechanism for a circuit breaker Download PDF

Info

Publication number
EP0385265B1
EP0385265B1 EP90103414A EP90103414A EP0385265B1 EP 0385265 B1 EP0385265 B1 EP 0385265B1 EP 90103414 A EP90103414 A EP 90103414A EP 90103414 A EP90103414 A EP 90103414A EP 0385265 B1 EP0385265 B1 EP 0385265B1
Authority
EP
European Patent Office
Prior art keywords
drive shaft
spring
spring energy
drive according
energy drive
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 - Lifetime
Application number
EP90103414A
Other languages
German (de)
French (fr)
Other versions
EP0385265A1 (en
Inventor
Max Kuhn
Rudi Schmidt
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.)
General Electric Switzerland GmbH
Original Assignee
GEC Alsthom T&D 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4195475&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0385265(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by GEC Alsthom T&D AG filed Critical GEC Alsthom T&D AG
Publication of EP0385265A1 publication Critical patent/EP0385265A1/en
Application granted granted Critical
Publication of EP0385265B1 publication Critical patent/EP0385265B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3042—Power arrangements internal to the switch for operating the driving mechanism using spring motor using a torsion spring
    • 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
    • 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

Definitions

  • the present invention relates to a spring force drive for a circuit breaker, in particular a vacuum switch for medium voltage, according to the preamble of claim 1.
  • Such a spring force drive for a vacuum circuit breaker for medium voltage is described in the Calor-Emag-Mitteilungen I / II / 1986 on pages 9 to 12.
  • This known spring force drive has a drive shaft which is driven by a spiral spring for switching the circuit breaker on and off in the same direction of rotation.
  • a support disk with two support surfaces sits on the drive shaft in a rotationally fixed manner, which cooperate with a fixed, pivotably supported support member in the switch-on or switch-off position of the drive shaft.
  • On the drive shaft there is also a cam with one cam, the circumferential surface of which forms a control cam for a follower roller arranged at one end of a pivoting lever.
  • the other end of the pivot lever is connected to the movable switching contact of a vacuum interrupter via a contact pressure spring arrangement.
  • a switch-off spring also acts on the swivel lever, which presses the follower roller against the circumferential surface of the cam disk.
  • the support element releases the support plate and thus the drive shaft for a rotation of 270 °, whereby the movable switch contact is brought into the switch-on position via the cam plate acting on the follower roller and the swivel lever.
  • Both Contact pressure spring arrangement and the opening spring tensioned In order to open the circuit breaker, the support element releases the support disc for a rotation of 90 °.
  • the swivel lever and the movable switch contact are returned to the switch-off position by the switch-off spring according to the shape of the peripheral surface, the movement of the swivel lever being determined by the cam disc, against the circumferential surface of which the follower roller is pressed by the switch-off spring.
  • the switch-off springs are dimensioned considerably stronger than would be necessary to achieve the required speed of the movable switch contact. This means that large energies must be made available for switching, which causes large forces and a corresponding dimensioning in the drive.
  • DE-A-27 02 962 discloses a drive arrangement for a vacuum switch, in which a shaft is driven by means of an energy store for switching on the vacuum switch in one direction and for switching off in the opposite direction.
  • a disc with a C-shaped slot forming a control cam On the shaft there is a disc with a C-shaped slot forming a control cam, in which a roller of a roller plunger engages, which inevitably follows the movements of the disc and transfers the movable contact piece into the on and off position.
  • a particularly simple tensile and pressure-effective connection between the cam disk arrangement and the lifting member is achieved in one embodiment according to claim 2.
  • An embodiment according to claim 3 leads to a smooth, play-free movement.
  • a particularly easy to install spring force drive is achieved by the embodiment according to claim 12.
  • the drive can be adapted to different needs through the very simple exchange of elements sitting on the drive shaft.
  • the angle of rotation between the switch-off and the switch-on position can be freely selected by exchanging support levers.
  • the spring force drive is particularly well suited for a switch arrangement as specified in EP-A-0 346 603 or the corresponding US-A-5 015 809.
  • the circuit breaker for medium voltage has a spring drive 10 and three vacuum interrupters 12 driven by it.
  • the vacuum interrupters 12 and the connecting rods 14 between the respective vacuum interrupters 12 and the drive 10 are constructed identically and are described with reference to the pole shown on the left in FIGS. 1 and 3 and in FIG. 2.
  • Each vacuum interrupter 12 has a stationary switching contact 16 indicated by a broken line and a movable switching contact 20 arranged at the upper end of a switching plunger 18 (FIG. 1).
  • the switching plunger 18 is connected in an articulated manner via a pin 22 to a double-armed pivot lever 24, which at the other end is operatively connected via a contact pressure spring arrangement 26 to a cam plate arrangement 30 seated on a drive shaft 28 of the spring force drive 10.
  • Each of the three cam disk arrangements 30 has two spaced apart and oppositely formed disks 32, in each of which a groove 34 is stamped around the drive shaft 28, the grooves 34 being open in the direction of the axis 28 'of the drive shaft 28 and against one another, see in particular Figure 3.
  • a cylindrical and parallel to the drive shaft 28 extending follower 36 is guided, which is arranged on a bracket 38 extending approximately in the radial direction with respect to the drive shaft 28.
  • the tab 38 has an elongate passage 40 in the longitudinal direction of the tab 38, as is the case here in particular from Figure 1 in the two only partially shown tabs 38 for the middle and right switching tube 12 and Figures 2 and 3.
  • the disks 32 are punched out of sheet metal and the grooves 34 are embossed in the same operation, with protruding beads 48 being formed on the side of the disk 32 opposite the groove 34.
  • the grooves 34 run around the drive shaft 28 approximately eccentrically, the greatest distance between the groove 34 and the axis 28 'of the drive shaft 28 in the direction of this axis in the rotational position of the disks 32 shown in the figures 28 'to the follower 36 is located.
  • the direction of the shortest distance is shown in dash-dotted lines in FIG. 2, is designated by 50 and, viewed in the counterclockwise direction, is offset by approximately 150.degree.
  • the follower 36 In the position of the disks 32 shown in the figures, the follower 36 is in the lower end position in which the pivot lever 24, as shown in solid lines in FIG. 2, is pivoted clockwise and the movable switching contact 28 is brought into the switched-on position. However, if the disks 32 are rotated clockwise by 150 °, so that the shortest distance 50 is between the follower 36 and the axis 28 ', the follower 36 is raised to its upper end position in which the pivot lever is pivoted counterclockwise in the position 24 ⁇ shown in broken lines, the circuit breaker is turned off.
  • the link 38 Adjacent to the follower 36, the link 38 is articulated to a rocker 52 which runs approximately parallel to the pivot lever 24 and is also pivotally mounted on the chassis 46 by means of a shaft 54 at its end remote from the link 38.
  • the rocker 52 has two spaced-apart and parallel to each other rocker arms 52 ', which extend on both sides of the tab 38 and are connected to this by a pin 56.
  • a contact pressure spring 58 through which the tab 38 extends and which is supported on both ends on a spherical cap-shaped support disk 60, which in turn abuts the rocker 52 and the pivot lever 24.
  • the support disks 60 each have a slot-shaped recess 62 for the tab 38.
  • the contact pressure spring assembly 26 operates as follows. When the follower 36 is in the upper end position and the movable switching contact 20 is in the switched-off position, the contact pressure spring 58 presses the swivel lever 24 downward on the lower end plate 60 until the bolt 42 is in contact with the lower end of the passage 40. If, in the course of a rotation of the disks 32 in a clockwise direction by 210 °, the following link 36 into the lower one shown in the figures Moved to the end position, the pivot lever 24 pivots under the pressure of the prestressed contact pressure spring 58 in a clockwise direction until the movable switching contact 20 is in contact with the fixed switching contact 16.
  • a spring hub 64 is also non-rotatably seated on the drive shaft 28, to which the inner end 66 of a spiral spring 68 is fastened.
  • the outer end 70 of the spiral spring 68 is connected to a spring cage 72 which surrounds the spiral spring 68 in a sleeve-like manner and is connected in a rotationally fixed manner to a toothed wheel 74 which is freely rotatably mounted on the spring hub 64.
  • the spring hub 64 has a thicker wall in the area of the spiral spring 68 in the radial direction than in the section adjacent thereto in the radial direction in which the gear 74 is arranged.
  • a roller bearing 80 for the gearwheel 70 is located between the shoulder 76 of the spring hub 64 formed in this way and a sleeve 78 placed on the drive shaft 28 at this end, which roller roller 80 is also held immovably in the axial direction by this shoulder 76 and the sleeve 78.
  • the gear 74 meshes with the driven gear 82 one means an electric motor 84 driven reduction gear 86 ( Figure 1).
  • the rotation of the spring cage 72 against the winding direction of the spiral spring 68 is prevented by a freewheel or a backstop, not shown, which acts on a shaft of the reduction gear 86.
  • each double lever 88.90 On the drive shaft 68 there are also two single-armed double levers 88, 90, which are offset relative to one another and each cooperate with a support element 92 or 94. At the free end of each double lever 88.90, a support roller 88 'or 90' is held by means of a bolt 96. In the switch-on position shown in the figures, the support roller 88 'is supported against the force of the spiral spring 68 on the end face 98' of a double-arm support lever 98 of the support member 92 which is pivotably mounted on the chassis 46.
  • the end face 98 ' is inclined with respect to the support roller 88' in such a way that the support lever 98 experiences a force acting in the clockwise direction, the support lever 98 being secured in the switched-on position at its end opposite the end face 98 'by means of a support shaft 100 against rotation.
  • the support shaft 100 is also pivotally mounted on the chassis 46 and is connected in a rotationally fixed manner to a two-armed actuating lever 102.
  • the support shaft 100 has in the area of the support lever 98 a segment-shaped milling 104 through which the support lever 98 can pivot when the support shaft 100 is pivoted clockwise by hand using a switch-off button 106 or electrically by means of a switch-off magnet 108.
  • the support member 94 is constructed exactly the same as the support member 92 and is therefore no longer described in detail.
  • the support lever 110 is also supported on a support shaft 100 ', which has a corresponding milling 104' through which the support lever 100 can pivot when the support shaft 110 is rotated clockwise.
  • the support shaft 100 ' can also be pivoted clockwise via a double-armed actuating lever 102' by means of a switch 106 'by hand or electrically via a switch magnet 108'.
  • the drive shaft 28 has an essentially square cross-section (FIG. 2) and has a thread 112 at each of its two ends (FIG. 3) onto which a nut 114 is screwed.
  • the chassis 46 has two spaced and parallel bearing plates 46 ', through which the drive shaft 28 is guided and on which the drive shaft 28 is rotatably supported by means of ball bearings 116. Depending on the outside of the relevant bearing plates 46 'sit on the shaft, the two disks 32 of the cam plate assemblies 30 for the two outer vacuum interrupters 12.
  • the two double levers 88.90 and between these the two disks 32 of the cam plate arrangement 30 for the middle vacuum interrupter 12 and the spring hub 64 with the spiral spring 68, the spring cage 72 and the gear 74 are arranged.
  • the disks 32 of each cam disk arrangement 30 are spaced apart from one another by spacer sleeves 118 (FIG. 3), and further spacer sleeves 118 'are provided between the two outer cam disk arrangements 30 and the relevant ball bearing 116 or the relevant nut 114.
  • the double levers 88, 90 are welded to tubes 120, which have a free inner cross section which corresponds to the cross section of the drive shaft 28.
  • the free inner cross section of the spring hub 64 and the passages 122 in the disks 32 is also adapted to the cross section of the drive shaft 28 in order to connect them to one another in a rotationally fixed manner. All parts seated on the drive shaft 28 are held in the axial direction by means of the two nuts 114.
  • auxiliary switch 124 In the spring-loaded drive 10 there is also an auxiliary switch 124, only shown schematically, the movable contact of which can be actuated via the bead 48 of a disk 32 in question.
  • the auxiliary switch 124 is thus closed or opened depending on the respective rotational position of the drive shaft 28.
  • the auxiliary switch 124 is required for feedback purposes or for electrical locking of the spring-loaded drive 10.
  • the assembly of the spring force drive 10 is very simple.
  • the next drive elements are each plugged onto the drive shaft 28 and at the end these are braced against one another by means of the nuts 114.
  • the spring force drive 10 operates as follows. In the switch-on position shown in the figures, the spiral spring 68 by means of the electric motor 84 via the reduction gear 86, the gear 74 and the spring cage 72 clockwise by 360 °. The drive shaft 28 is prevented from rotating by the support member 92. In order to switch off the circuit breaker, the support shaft 100 is pivoted clockwise by hand by actuating the switch-off button 106 or electrically by activating the switch-off relay 108 in a clockwise direction. The support shaft 100 releases the support lever 98 which, as a result of the pressing force of the support roller 88 ', swivels clockwise through the milling 104.
  • the drive shaft 28 is released, which rotates clockwise by 150 ° under the force of the spiral spring 68 until the support roller 90 'of the double lever 90 comes to rest on the support lever 110.
  • the follower 36 is pulled upwards through the groove 34 into the upper end position. This movement is transmitted via the tab 38, the pivot lever 24 and the switching plunger 18 to the movable switching contact 20, which is moved into the off position.
  • the contact pressure spring 58 relaxes until the bolt 42 is in contact with the lower end of the passage 40.
  • the energy released by the spiral spring 68 and the contact pressure spring 58 is converted into kinetic energy, which is used, if appropriate, to detach switch contacts 16, 20 welded to one another. Under the force of the spiral spring 68, the movable switching contacts 20 are transferred to the off position.
  • the support shaft 100 ' is swiveled clockwise by the user by pressing the switch 106' or electrically by activating the switch-on relay 108 '.
  • the support lever 110 and thus the double lever 90 are released in a corresponding manner.
  • the drive shaft 28 rotates through 210 ° until the support roller 80 'of the double lever 88 strikes the support lever 98 of the support member 92.
  • the follower 36 is transferred from the upper end position into the lower end position shown in the figures and the switch into the switch-on position.
  • the contact pressure spring 58 is tensioned.
  • part of the energy to be released by the spiral spring 68 is first converted into kinetic energy in order to achieve the desired stroke-time profile of the movable switching contact 20.
  • the spiral spring 68 is in turn pulled up by 360 °.
  • the coil spring 68 is preloaded to such an extent that when the coil spring 68 is fully opened, the stored energy is sufficient for a reclosure to switch on and reclosure, the spring cage 72 rotating again by 360 as soon as the switch-on position is reached ° is driven.
  • the follower 36 is inevitably guided in the grooves 34, whereby a positive connection is formed with respect to the direction of movement of the tab 38 between the follower 36 and the washers 32.
  • the position of the movable switching contact 20 thus always corresponds to the position of the drive shaft 28, corrected in each case by the differential stroke absorbed by the contact pressure spring 58 or the passage 40.
  • the end shields 46 ' can be formed on an insulating support frame which engages around the vacuum interrupters 12 at least partially and to which the vacuum interrupters 12 can be attached. It is of course also conceivable that only a single cam disc arrangement is provided and the stroke of the follower 36 is transmitted to all vacuum interrupters 12 via common actuating members.
  • the follower is arranged on a pivot lever. It is also possible to couple the tab directly to the contact plunger without a swivel lever if the spring-loaded drive 10 and the vacuum interrupters are mutually corresponding Have location. Instead of vacuum interrupters, other interrupters can also be provided. By replacing individual drive elements, the spring-loaded drive can be adapted to the requirements of a wide variety of interrupters.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Transmission Devices (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

Two discs (32) per vacuum switching tube (12) are seated on the input drive shaft (28), which discs (32) have slots (34) extending circumferentially around the input drive shaft (28) and open with respect to one another. In the slots (34) of two adjacent discs (32) there is guided a cylindrical follower element (36) whose movement is transmitted via a strap (38) onto the pivoting lever (24) and to the movable switching contact (20). In the switched-on and switched-off positions, the input drive shaft (28) is supported via a detachable supporting device (92, 94), driven clockwise by the spiral spring (68) in order to switch the circuit breaker on or off. The follower element (36) is forcibly guided in the slots (34) of the discs (32), as a result of which the position of the movable switching contact (20) is forced to coincide with the corresponding rotational position of the input drive shaft (28). <IMAGE>

Description

Die vorliegende Erfindung betrifft einen Federkraftantrieb für einen Leistungsschalter, insbesondere einen Vakuumschalter für Mittelspannung, gemäss dem Oberbegriff des Anspruchs 1.The present invention relates to a spring force drive for a circuit breaker, in particular a vacuum switch for medium voltage, according to the preamble of claim 1.

Ein solcher Federkraftantrieb für einen Vakuum- Leistungsschalter für Mittelspannung ist in den Calor- Emag- Mitteilungen I/II/1986 auf den Seiten 9 bis 12 beschrieben. Dieser bekannte Federkraftantrieb weist eine Antriebswelle auf, die von einer Spiralfeder zum Ein- und Ausschalten des Leistungsschalters in derselben Drehrichtung angetrieben ist. Auf der Antriebswelle sitzt drehfest eine Abstützscheibe mit zwei Abstützflächen, die in der Einschalt- bzw. Ausschaltstellung der Antriebswelle mit einem ortsfesten, schwenkbar gelagerten Abstützorgan zusammen wirken. Auf der Antriebswelle sitzt ebenfalls drehfest pro Pol je eine Kurvenscheibe deren Umfangsfläche eine Steuerkurve für eine am einen Ende eines Schwenkhebels angeordnete Folgerolle bildet. Das andere Ende des Schwenkhebels ist über eine Kontaktdruckfederanordnung mit dem bewegbaren Schaltkontakt einer Vakuumschaltröhre verbunden. Auf den Schwenkhebel wirkt ebenfalls eine Ausschaltfeder ein, die die Folgerolle gegen die Umfangsfläche der Kurvenscheibe drückt. Zum Einschalten des Leistungsschalters gibt das Abstützorgan die Abstützscheibe und somit die Antriebswelle für eine Drehung um 270° frei, wodurch der bewegbare Schaltkontakt über die druckwirksam auf die Folgerolle einwirkende Kurvenscheibe und den Schwenkhebel in die Einschaltstellung gebracht wird. Dabei wird sowohl die Kontaktdruckfederanordnung als auch die Ausschaltfeder gespannt. Um den Leistungsschalter auszuschalten, gibt das Abstützorgan die Abstützscheibe für eine Drehung von 90° frei. Dabei wird der Schwenkhebel und der bewegbare Schaltkontakt durch die Ausschaltfeder entsprechend der Form der Umfangsfläche in die Ausschaltstellung zurückgebracht, wobei die Bewegung des Schwenkhebels durch die Kurvenscheibe bestimmt ist, gegen deren Umfangsfläche die Folgerolle von der Ausschaltfeder gedrückt wird. Um in jedem Fall auch bei verschweissten Schaltkontakten ein sicheres Ausschalten zu gewährleisten, sind die Ausschaltfedern erheblich stärker dimensioniert als dies für das Erreichen der erforderlichen Geschwindigkeit des bewegbaren Schaltkontaktes notwendig wäre. Dies bedingt, dass für das Schalten grosse Energien zur Verfügung gestellt werden müssen, was im Antrieb grosse Kräfte und eine entsprechende Dimensionierung hervorruft.Such a spring force drive for a vacuum circuit breaker for medium voltage is described in the Calor-Emag-Mitteilungen I / II / 1986 on pages 9 to 12. This known spring force drive has a drive shaft which is driven by a spiral spring for switching the circuit breaker on and off in the same direction of rotation. A support disk with two support surfaces sits on the drive shaft in a rotationally fixed manner, which cooperate with a fixed, pivotably supported support member in the switch-on or switch-off position of the drive shaft. On the drive shaft there is also a cam with one cam, the circumferential surface of which forms a control cam for a follower roller arranged at one end of a pivoting lever. The other end of the pivot lever is connected to the movable switching contact of a vacuum interrupter via a contact pressure spring arrangement. A switch-off spring also acts on the swivel lever, which presses the follower roller against the circumferential surface of the cam disk. To switch on the circuit breaker, the support element releases the support plate and thus the drive shaft for a rotation of 270 °, whereby the movable switch contact is brought into the switch-on position via the cam plate acting on the follower roller and the swivel lever. Both Contact pressure spring arrangement and the opening spring tensioned. In order to open the circuit breaker, the support element releases the support disc for a rotation of 90 °. The swivel lever and the movable switch contact are returned to the switch-off position by the switch-off spring according to the shape of the peripheral surface, the movement of the swivel lever being determined by the cam disc, against the circumferential surface of which the follower roller is pressed by the switch-off spring. In order to ensure a safe switch-off even in the case of welded switch contacts, the switch-off springs are dimensioned considerably stronger than would be necessary to achieve the required speed of the movable switch contact. This means that large energies must be made available for switching, which causes large forces and a corresponding dimensioning in the drive.

Weiter offenbart die DE-A-27 02 962 eine Antriebsanordnung für einen Vakuumschalter, bei der eine Welle mittels eines Kraftspeichers zum Einschalten des Vakuumschalters in der einen und zum Ausschalten in entgegengesetzter Richtung angetrieben wird. Auf der Welle sitzt drehfest eine Scheibe mit einem eine Steuerkurve bildenden C-förmigen Schlitz, in den eine Rolle eines Rollenstössels eingreift, der dadurch zwangsläufig den Bewegungen der Scheibe folgt und das bewegliche Kontaktstück in die Ein- und Ausschaltstellung überführt.Furthermore, DE-A-27 02 962 discloses a drive arrangement for a vacuum switch, in which a shaft is driven by means of an energy store for switching on the vacuum switch in one direction and for switching off in the opposite direction. On the shaft there is a disc with a C-shaped slot forming a control cam, in which a roller of a roller plunger engages, which inevitably follows the movements of the disc and transfers the movable contact piece into the on and off position.

Es ist somit eine Aufgabe der vorliegenden Erfindung einen gattungsgemässen Antrieb für einen Leistungsschalter zu schaffen, der mit gegenüber dem Stand der Technik kleineren Energiemengen den Leistungsschalter zuverlässig antreibt.It is therefore an object of the present invention to provide a generic drive for a circuit breaker that reliably drives the circuit breaker with smaller amounts of energy than the prior art.

Diese Aufgabe wird durch die Merkmale des kennzeichnenden Teiles des Anspruchs 1 gelöst.This object is achieved by the features of the characterizing part of claim 1.

Dadurch dass die Kurvenscheibenanordnung mit dem Hubglied sowohl druck- wie auch zugwirksam verbunden ist, ist keine separate Ausschaltfeder notwendig, sondern eine einzige auf die Antriebswelle einwirkende Federanordnung bewerkstelligt das Einschalten sowie das Ausschalten des Leistungsschalters. Dadurch sind erheblich kleinere Kräfte zu übertragen. Beim Ausschalten wird, durch eine entsprechende Form der Steuerkurve, über einen ersten Teil des Ausschaltdrehwinkels der Antriebswelle die von der Federanordnung abgegebene Energie durch Drehen der Antriebswelle und aller mit dieser drehfest verbundenen Teile in kinetische Energie umgesetzt. Diese kinetische Energie und die Kraft der Federanordnung trennt in jedem Fall auch miteinander verschweisste Schaltkontakte voneinander. Durch die druck- und zugwirksame Verbindung zwischen der Kurvenscheibenanordnung und dem Hubglied wird auf jeden Fall sichergestellt, dass die Stellung des bewegbaren Schaltkontaktes mit der entsprechenden Stellung der Antriebswelle übereinstimmt.Due to the fact that the cam disk arrangement is connected to the lifting member both in terms of pressure and pull, no separate opening spring is necessary, but a single spring arrangement acting on the drive shaft accomplishes the switching on and off of the circuit breaker. As a result, considerably smaller forces can be transmitted. When switching off, the energy emitted by the spring arrangement is converted into kinetic energy over a first part of the switch-off rotation angle of the drive shaft by rotating the drive shaft and all parts connected to it in a rotationally fixed manner by means of a corresponding shape of the control curve. In any case, this kinetic energy and the force of the spring arrangement also separate switch contacts welded to one another. The pressure and tensile connection between the cam disk arrangement and the lifting element ensures in any case that the position of the movable switching contact matches the corresponding position of the drive shaft.

Eine besonders einfache zug- und druckwirksame Verbindung zwischen der Kurvenscheibenanordnung und dem Hubglied wird bei einer Ausführungsform gemäss Anspruch 2 erzielt.A particularly simple tensile and pressure-effective connection between the cam disk arrangement and the lifting member is achieved in one embodiment according to claim 2.

Eine Ausführungsform gemäss Anspruch 3 führt zu einem ruhigen spielfreien Bewegungsverlauf.An embodiment according to claim 3 leads to a smooth, play-free movement.

Bei mehrpoligen Leistungsschaltern ist es vorteilhaft, pro Pol eine Kurvenscheibenanordnung und ein mit dem bewegbaren Schaltkontakt des betreffenden Poles wirkverbundenes Hubglied vorzusehen. Dadurch sind die pro Kurvenscheibe zu übertragenden Kräfte minimal.In the case of multi-pole circuit breakers, it is advantageous to provide a cam disk arrangement per pole and a lifting element which is operatively connected to the movable switching contact of the pole in question. As a result, the forces to be transmitted per cam are minimal.

Bei Ausführungsformen des Federkraftantriebes gemäss den Ansprüchen 5 und 6 können auf das Hubglied einwirkende Querkräfte vermieden werden.In embodiments of the spring force drive according to claims 5 and 6, transverse forces acting on the lifting member can be avoided.

Ein besonders einfach montierbarer Federkraftantrieb wird durch die Ausbildungsform gemäss Anspruch 12 erzielt. Durch den sehr einfach möglichen Austausch von auf der Antriebswelle sitzenden Elementen kann der Antrieb an verschiedene Bedürfnisse angepasst werden. So können beispielsweise bei einer Ausführungsform gemäss Anspruch 13 durch Austauschen von Abstützhebeln die Drehwinkel zwischen der Ausschaltung und der Einschaltstellung frei gewählt werden.A particularly easy to install spring force drive is achieved by the embodiment according to claim 12. The drive can be adapted to different needs through the very simple exchange of elements sitting on the drive shaft. For example, in one embodiment according to claim 13, the angle of rotation between the switch-off and the switch-on position can be freely selected by exchanging support levers.

Wie dies im Anspruch 15 angegeben ist, eignet sich der Federkraftantrieb besonders gut für eine Schalteranordnung, wie sie in der EP-A- 0 346 603 bzw. der entsprechenden US-A- 5 015 809 angegebenen ist.As stated in claim 15, the spring force drive is particularly well suited for a switch arrangement as specified in EP-A-0 346 603 or the corresponding US-A-5 015 809.

Weitere bevorzugte Ausbildungsformen sind in den weiteren Ansprüchen angegeben.Further preferred forms of training are specified in the further claims.

Die vorliegende Erfindung wird nun anhand eines in den Figuren dargestellten Ausführungsbeispiels näher beschrieben.The present invention will now be described with reference to an embodiment shown in the figures.

Es zeigen rein schematisch:

Fig. 1
in perspektivischer Darstellung vereinfacht einen Federkraftantrieb; und
Fig. 2 und 3
teilweise geschnitten in Seitenansicht bzw. in einem Längsschnitt entlang der Linie III-III der Fig. 2 denselben Schalterantrieb.
It shows purely schematically:
Fig. 1
simplified perspective view of a spring force drive; and
2 and 3
partially sectioned in side view or in a longitudinal section along the line III-III of FIG. 2 the same switch drive.

Wie dies insbesondere aus der Figur 1 hervorgeht, weist der Leistungsschalter für Mittelspannung einen Federantrieb 10 und drei von diesem angetriebene Vakuumschaltröhren 12 auf. Die Vakuumschaltröhren 12 und die Verbindungsgestänge 14 zwischen den jeweiligen Vakuumschaltröhren 12 und dem Antrieb 10 sind indentisch aufgebaut und werden anhand des in den Figuren 1 und 3 ganz links und in der Figur 2 dargestellten Poles beschrieben.As can be seen in particular from FIG. 1, the circuit breaker for medium voltage has a spring drive 10 and three vacuum interrupters 12 driven by it. The vacuum interrupters 12 and the connecting rods 14 between the respective vacuum interrupters 12 and the drive 10 are constructed identically and are described with reference to the pole shown on the left in FIGS. 1 and 3 and in FIG. 2.

Jede Vakuumschaltröhre 12 weist einen gestrichel angedeuteten feststehenden Schaltkontakt 16 und einen am oberen Ende eines Schaltstössels 18 angeordneten bewegbaren Schaltkontakt 20 auf (Figur 1). Im unteren Endbereich ist der Schaltstössel 18 über einen Stift 22 mit einem doppelarmigen Schwenkhebel 24 gelenkig verbunden, welcher andernends über eine Kontaktdruckfederanordnung 26 mit einer auf einer Antriebswelle 28 des Federkraftantriebes 10 sitzenden Kurvenscheibenanordnung 30 wirkverbunden ist.Each vacuum interrupter 12 has a stationary switching contact 16 indicated by a broken line and a movable switching contact 20 arranged at the upper end of a switching plunger 18 (FIG. 1). In the lower end region, the switching plunger 18 is connected in an articulated manner via a pin 22 to a double-armed pivot lever 24, which at the other end is operatively connected via a contact pressure spring arrangement 26 to a cam plate arrangement 30 seated on a drive shaft 28 of the spring force drive 10.

Jede der drei Kurvenscheibenanordnungen 30 weist zwei voneinander beabstandete und gegengleich ausgebildete Scheiben 32 auf, in welche je eine um die Antriebswelle 28 herumlaufende Nut 34 eingeprägt ist, wobei die Nuten 34 in Richtung der Achse 28′ der Antriebswelle 28 und gegeneinander offen sind, siehe insbesondere Figur 3. In den Nuten 34 ist ein zylinderförmiges und parallel zur Antriebswelle 28 verlaufendes Folgeglied 36 geführt, das an einer bezüglich der Antriebswelle 28 ungefähr in radialer Richtung verlaufenden Lasche 38 angeordnet ist. Am vom Folgeglied 36 entfernten Ende weist die Lasche 38 einen in Längsrichtung der Lasche 38 länglichen Durchlass 40 auf, wie dies insbesondere aus der Figur 1 in den beiden nur teilweise dargestellten Laschen 38 für die mittlere und rechts dargestellte Schaltröhre 12 und den Figuren 2 und 3 hervorgeht. Durch den Durchlass 40 hindurch ist ein parallel zum Folgeglied 36 verlaufender Bolzen 42 geführt, welcher an den beiden voneinander beabstandenden und zueinander parallel verlaufenden Hebeln 24′ des Schwenkhebels 24 befestigt ist. Die Lasche 38 sowie der Kontaktstössel 18 verlaufen zwischen den beiden Hebel 24′ welche mittels eines Schwenkbolzens 44 an einem Chassis 46 schwenkbar gelagert sind (siehe insbesondere Figur 2).Each of the three cam disk arrangements 30 has two spaced apart and oppositely formed disks 32, in each of which a groove 34 is stamped around the drive shaft 28, the grooves 34 being open in the direction of the axis 28 'of the drive shaft 28 and against one another, see in particular Figure 3. In the grooves 34, a cylindrical and parallel to the drive shaft 28 extending follower 36 is guided, which is arranged on a bracket 38 extending approximately in the radial direction with respect to the drive shaft 28. At the end remote from the follower 36, the tab 38 has an elongate passage 40 in the longitudinal direction of the tab 38, as is the case here in particular from Figure 1 in the two only partially shown tabs 38 for the middle and right switching tube 12 and Figures 2 and 3. Through the passage 40 a parallel to the follower 36 bolt 42 is guided, which is attached to the two spaced and mutually parallel levers 24 'of the pivot lever 24. The tab 38 and the contact plunger 18 run between the two levers 24 'which are pivotally mounted on a chassis 46 by means of a pivot pin 44 (see in particular Figure 2).

Die Scheiben 32 sind aus einem Blech ausgestanzt und im gleichen Arbeitsgang sind die Nuten 34 eingeprägt wobei sich auf der jeweils der Nut 34 gegenüberliegenden Seite der Scheibe 32 vorstehende Wülste 48 ausbilden. Wie dies insbesondere aus der Figur 2 hervorgeht umlaufen die Nuten 34 die Antriebswelle 28 ungefähr exzenterförmig, wobei sich in der in den Figuren dargestellten Drehposition der Scheiben 32 der grösste Abstand zwischen der Nut 34 und der Achse 28′ der Antriebswelle 28 in Richtung von dieser Achse 28′ zum Folgeglied 36 befindet. Die Richtung des kürzesten Abstandes ist in der Figur 2 strichpunktiert eingezeichnet, mit 50 bezeichnet und befindet sich im Gegenuhrzeigersinn gesehen ungefähr um 150° gegenüber dem Folgeglied 36 versetzt. In der in den Figuren dargestellten Lage der Scheiben 32 befindet sich das Folgeglied 36 in der unteren Endlage in welcher der Schwenkhebel 24, wie dies mit ausgezogenen Linien in der Figur 2 dargestellt ist, im Uhrzeigersinn verschwenkt und der bewegbare Schaltkontakt 28 in Einschaltstellung gebracht ist. Sind hingegen die Scheiben 32 im Uhrzeigersinn um 150° verdreht, so dass sich der kürzeste Abstand 50 zwischen dem Folgeglied 36 und der Achse 28′ befindet, ist das Folgeglied 36 in seine obere Endlage angehoben in welcher sich der Schwenkhebel im Gegenuhrzeigersinn verschwenkt in der gestrichelt dargestellten Lage 24˝ befindet, dabei ist der Leistungsschalter ausgeschaltet.The disks 32 are punched out of sheet metal and the grooves 34 are embossed in the same operation, with protruding beads 48 being formed on the side of the disk 32 opposite the groove 34. As can be seen in particular from FIG. 2, the grooves 34 run around the drive shaft 28 approximately eccentrically, the greatest distance between the groove 34 and the axis 28 'of the drive shaft 28 in the direction of this axis in the rotational position of the disks 32 shown in the figures 28 'to the follower 36 is located. The direction of the shortest distance is shown in dash-dotted lines in FIG. 2, is designated by 50 and, viewed in the counterclockwise direction, is offset by approximately 150.degree. In the position of the disks 32 shown in the figures, the follower 36 is in the lower end position in which the pivot lever 24, as shown in solid lines in FIG. 2, is pivoted clockwise and the movable switching contact 28 is brought into the switched-on position. However, if the disks 32 are rotated clockwise by 150 °, so that the shortest distance 50 is between the follower 36 and the axis 28 ', the follower 36 is raised to its upper end position in which the pivot lever is pivoted counterclockwise in the position 24˝ shown in broken lines, the circuit breaker is turned off.

Benachbart zum Folgeglied 36 ist die Lasche 38 mit einer Schwinge 52 gelenkig verbunden, welche ungefähr parallel zum Schwenkhebel 24 verläuft und an ihrem von der Lasche 38 entfernten Ende ebenfalls am Chassis 46 mittels einer Welle 54 schwenkbar gelagert ist. Die Schwinge 52 weist zwei voneinander beabstandete und parallel zueinander verlaufende Schwinghebel 52′ auf, welche beidseits der Lasche 38 verlaufen und über einen Stift 56 mit dieser verbunden sind. Zwischen der Schwinge 52 und dem Schwenkhebel 24 befindet sich eine Kontaktdruckfeder 58 durch welche hindurch die Lasche 38 verläuft und welche sich beiderends an je einer kugelkalottenförmigen Stützscheibe 60 abstützt, welche ihrerseits an der Schwinge 52 bzw. am Schwenkhebel 24 anstehen. Die Stützscheiben 60 weisen je eine schlitzförmige Ausnehmung 62 für die Lasche 38 auf.Adjacent to the follower 36, the link 38 is articulated to a rocker 52 which runs approximately parallel to the pivot lever 24 and is also pivotally mounted on the chassis 46 by means of a shaft 54 at its end remote from the link 38. The rocker 52 has two spaced-apart and parallel to each other rocker arms 52 ', which extend on both sides of the tab 38 and are connected to this by a pin 56. Between the rocker 52 and the pivot lever 24 there is a contact pressure spring 58 through which the tab 38 extends and which is supported on both ends on a spherical cap-shaped support disk 60, which in turn abuts the rocker 52 and the pivot lever 24. The support disks 60 each have a slot-shaped recess 62 for the tab 38.

Die Kontaktdruckfederanordnung 26 arbeitet wie folgt. Bei sich in der oberen Endlage befindendem Folgeglied 36 und dem entsprechend sich in Ausschaltstellung befindenden bewegbaren Schaltkontakt 20 drückt die Kontaktdruckfeder 58 über die untere Stützscheibe 60 den Schwenkhebel 24 am diesseitigen Ende soweit nach unten bis der Bolzen 42 am unteren Ende des Durchlasses 40 ansteht. Wird im Zuge einer Verdrehung der Scheiben 32 im Uhrzeigersinn um 210° das Folgeglied 36 in die in den Figuren dargestellte untere Endlage verschoben, verschwenkt sich der Schwenkhebel 24 unter dem Druck der vorgespannten Kontaktdruckfeder 58 im Uhrzeigersinn bis der bewegbare Schaltkontakt 20 am feststehenden Schaltkontakt 16 ansteht. Beim Weiterverschieben des Folgegliedes 36 gegen unten wird die Kontaktdruckfeder 58 infolge der Relativbewegung zwischen dem nun stillstehenden Schwenkhebel 24 und der mit der Lasche 38 mitbewegten Schwinge 52 weiter gespannt, wodurch die Kraft mit welcher die beiden Schaltkontakte 16,20 gegeneinander gepresst werden erhöht wird. In der Einschaltstellung befindet sich der Bolzen 42 im oberen Endbereich des Durchlasses 40, wie dies insbesondere aus den Figuren 2 und 3 deutlich hervorgeht.The contact pressure spring assembly 26 operates as follows. When the follower 36 is in the upper end position and the movable switching contact 20 is in the switched-off position, the contact pressure spring 58 presses the swivel lever 24 downward on the lower end plate 60 until the bolt 42 is in contact with the lower end of the passage 40. If, in the course of a rotation of the disks 32 in a clockwise direction by 210 °, the following link 36 into the lower one shown in the figures Moved to the end position, the pivot lever 24 pivots under the pressure of the prestressed contact pressure spring 58 in a clockwise direction until the movable switching contact 20 is in contact with the fixed switching contact 16. When the follower 36 is moved further downward, the contact pressure spring 58 is further tensioned as a result of the relative movement between the now pivoting lever 24 and the rocker 52 moved with the link 38, as a result of which the force with which the two switching contacts 16, 20 are pressed against one another is increased. In the switched-on position, the bolt 42 is located in the upper end region of the passage 40, as can be seen particularly clearly from FIGS. 2 and 3.

Auf der Antriebswelle 28 sitzt ebenfalls drehfest eine Federnabe 64 an welcher das innere Ende 66 einer Spiralfeder 68 befestigt ist. Das äussere Ende 70 der Spiralfeder 68 ist mit einem Federkäfig 72 verbunden, welcher die Spiralfeder 68 büchsenförmig umgreift und mit einem auf der Federnabe 64 frei drehbar gelagerten Zahnrad 74 drehfest verbunden ist. Die Federnabe 64 weist im Bereich der Spiralfeder 68 in radialer Richtung gesehen eine dickere Wandung auf, als im dazu in radialer Richtung angrenzenden Abschnitt in welchem das Zahnrad 74 angeordnet ist. Zwischen dem so gebildeten Absatz 76 der Federnabe 64 und einer am diesseitigen Ende auf die Antriebswelle 28 aufgesetzten Hülse 78 befindet sich ein Rollenlager 80 für das Zahnrad 70, welches auch durch diesen Absatz 76 und die Hülse 78 in axialer Richtung unverschiebbar gehalten ist.A spring hub 64 is also non-rotatably seated on the drive shaft 28, to which the inner end 66 of a spiral spring 68 is fastened. The outer end 70 of the spiral spring 68 is connected to a spring cage 72 which surrounds the spiral spring 68 in a sleeve-like manner and is connected in a rotationally fixed manner to a toothed wheel 74 which is freely rotatably mounted on the spring hub 64. The spring hub 64 has a thicker wall in the area of the spiral spring 68 in the radial direction than in the section adjacent thereto in the radial direction in which the gear 74 is arranged. A roller bearing 80 for the gearwheel 70 is located between the shoulder 76 of the spring hub 64 formed in this way and a sleeve 78 placed on the drive shaft 28 at this end, which roller roller 80 is also held immovably in the axial direction by this shoulder 76 and the sleeve 78.

Das Zahnrad 74 kämmt mit dem Abtriebsrad 82 eines mittels eines Elektromotores 84 angetriebenen Untersetzungsgetriebes 86 (Figur 1). Das Drehen des Federkäfigs 72 entgegen der Aufzugsrichtung der Spiralfeder 68 wird durch einen nicht dargestellten Freilauf bzw. eine Rücklaufsperre unterbunden, welcher auf eine Welle des Untersetzungsgetriebes 86 einwirkt.The gear 74 meshes with the driven gear 82 one means an electric motor 84 driven reduction gear 86 (Figure 1). The rotation of the spring cage 72 against the winding direction of the spiral spring 68 is prevented by a freewheel or a backstop, not shown, which acts on a shaft of the reduction gear 86.

Auf der Antriebswelle 68 sitzen weiter drehfest zwei gegeneinander versetzt angeordnete einarmige Doppelhebel 88,90, welche je mit einem Abstützorgan 92 bzw. 94 zusammenwirken. Am freien Ende jedes Doppelhebels 88,90 ist eine Abstützwalze 88′ bzw. 90′ mittels eines Bolzens 96 gehalten. In der in den Figuren dargestellten Einschaltstellung stützt sich die Abstützwalze 88′ entgegen der Kraft der Spiralfeder 68 an der Stirnfläche 98′ eines am Chassis 46 schwenkbar gelagerten doppelarmigen Abstützhebels 98 des Abstützorganes 92 ab. Die Stirnfläche 98′ ist bezüglich der Abstützwalze 88′ derart geneigt, dass der Abstützhebel 98 eine im Uhrzeigersinn wirkende Kraft erfährt, wobei der Abstützhebel 98 in der Einschaltstellung an seinem der Stirnfläche 98′ entgegengesetzten Ende mittels einer Abstützwelle 100 gegen Verdrehen gesichert ist. Die Abstützwelle 100 ist ebenfalls am Chassis 46 schwenkbar gelagert und drehfest mit einem zweiarmigen Betätigungshebel 102 verbunden. Die Abstützwelle 100 weist im Bereich des Abstützhebels 98 eine segmentförmige Anfräsung 104 auf, durch welche hindurch sich der Abstützhebel 98 beim Verschwenken der Abstützwelle 100 im Uhrzeigersinn von Hand mittels einer Ausschalttaste 106 oder elektrisch mittels eines Ausschaltmagnets 108, verschwenken kann. Dadurch wird die Antriebswelle 28 freigegeben und diese kann sich unter der Wirkung der Spiralfeder 68 im Uhrzeigersinn drehen bis die Abstützwalze 90′ des Doppelhebels 90 an der entsprechenden Stirnfläche 110′ des Abstützhebels 110 des Abstützorganes 94 zur Anlage kommt. Das Abstützorgan 94 ist genau gleich aufgebaut wie das Abstützorgan 92 und wird deshalb nicht mehr näher beschrieben. Der Abstützhebel 110 ist ebenfalls an einer Abstützwelle 100′ abgestützt, welche eine entsprechende Anfräsung 104′ aufweist, durch welche hindurch sich beim Verdrehen der Abstützwelle 110 im Uhrzeigersinn der Abstützhebel 100 verschwenken kann. Die Abstützwelle 100′ ist ebenfalls über einen doppelarmigen Betätigungshebel 102′ mittels einer Einschalttaste 106′ von Hand oder elektrisch über einen Einschaltmagnet 108′ im Uhrzeigersinn verschwenkbar.On the drive shaft 68 there are also two single-armed double levers 88, 90, which are offset relative to one another and each cooperate with a support element 92 or 94. At the free end of each double lever 88.90, a support roller 88 'or 90' is held by means of a bolt 96. In the switch-on position shown in the figures, the support roller 88 'is supported against the force of the spiral spring 68 on the end face 98' of a double-arm support lever 98 of the support member 92 which is pivotably mounted on the chassis 46. The end face 98 'is inclined with respect to the support roller 88' in such a way that the support lever 98 experiences a force acting in the clockwise direction, the support lever 98 being secured in the switched-on position at its end opposite the end face 98 'by means of a support shaft 100 against rotation. The support shaft 100 is also pivotally mounted on the chassis 46 and is connected in a rotationally fixed manner to a two-armed actuating lever 102. The support shaft 100 has in the area of the support lever 98 a segment-shaped milling 104 through which the support lever 98 can pivot when the support shaft 100 is pivoted clockwise by hand using a switch-off button 106 or electrically by means of a switch-off magnet 108. As a result, the drive shaft 28 is released and this can move under the action of the spiral spring 68 turn clockwise until the support roller 90 'of the double lever 90 on the corresponding end face 110' of the support lever 110 of the support member 94 comes to rest. The support member 94 is constructed exactly the same as the support member 92 and is therefore no longer described in detail. The support lever 110 is also supported on a support shaft 100 ', which has a corresponding milling 104' through which the support lever 100 can pivot when the support shaft 110 is rotated clockwise. The support shaft 100 'can also be pivoted clockwise via a double-armed actuating lever 102' by means of a switch 106 'by hand or electrically via a switch magnet 108'.

Die Antriebswelle 28 besitzt einen im wesentlichen quadratischen Querschnitt (Figur 2) und weist an seinen beiden Enden je ein Gewinde 112 auf (Figur 3) auf welches je eine Mutter 114 geschraubt ist. Das Chassis 46 weist zwei voneinander beabstandete und parallel zueinander verlaufende Lagerschilder 46′ auf, durch welche hindurch die Antriebswelle 28 geführt ist und an welchem die Antriebswelle 28 mittels Kugellagern 116 freidrehbar gelagert ist. Je auf der Aussenseite der betreffenden Lagerschilder 46′ sitzen auf der Welle die beiden Scheiben 32 der Kurvenscheibenanordnungen 30 für die beiden äusseren Vakuumschaltröhren 12. Zwischen den beiden Lagerschildern 46′ sind auf der Antriebswelle 28 die beiden Doppelhebel 88,90 und zwischen diesen die beiden Scheiben 32 der Kurvenscheibenanordnung 30 für die mittlere Vakuumschaltröhre 12 und die Federnabe 64 mit der Spiralfeder 68 dem Federkäfig 72 und dem Zahnrad 74 angeordnet. Die Scheiben 32 jeder Kurvenscheibenanordnung 30 sind voneinander durch Distanzhülsen 118 beabstandet (Figur 3), und zwischen den beiden aussenliegenden Kurvenscheibenanordnungen 30 und dem betreffenden Kugellager 116 bzw. der betreffenden Mutter 114 sind weiter Distanzhülsen 118′ vorgesehen. Die Doppelhebel 88,90 sind an Rohren 120 angeschweisst, welche einen freien inneren Querschnitt aufweisen welcher dem Querschnitt der Antriebswelle 28 entspricht. Ebenfalls der freie Innenquerschnitt der Federnabe 64 und der Durchlässe 122 in den Scheiben 32 ist an den Querschnitt der Antriebswelle 28 angepasst um diese miteinander drehfest zu verbinden. Mittels den beiden Muttern 114 sind alle auf der Antriebswelle 28 sitzenden Teile in axialer Richtung gehalten.The drive shaft 28 has an essentially square cross-section (FIG. 2) and has a thread 112 at each of its two ends (FIG. 3) onto which a nut 114 is screwed. The chassis 46 has two spaced and parallel bearing plates 46 ', through which the drive shaft 28 is guided and on which the drive shaft 28 is rotatably supported by means of ball bearings 116. Depending on the outside of the relevant bearing plates 46 'sit on the shaft, the two disks 32 of the cam plate assemblies 30 for the two outer vacuum interrupters 12. Between the two bearing plates 46' are on the drive shaft 28, the two double levers 88.90 and between these the two disks 32 of the cam plate arrangement 30 for the middle vacuum interrupter 12 and the spring hub 64 with the spiral spring 68, the spring cage 72 and the gear 74 are arranged. The disks 32 of each cam disk arrangement 30 are spaced apart from one another by spacer sleeves 118 (FIG. 3), and further spacer sleeves 118 'are provided between the two outer cam disk arrangements 30 and the relevant ball bearing 116 or the relevant nut 114. The double levers 88, 90 are welded to tubes 120, which have a free inner cross section which corresponds to the cross section of the drive shaft 28. The free inner cross section of the spring hub 64 and the passages 122 in the disks 32 is also adapted to the cross section of the drive shaft 28 in order to connect them to one another in a rotationally fixed manner. All parts seated on the drive shaft 28 are held in the axial direction by means of the two nuts 114.

Im Federkraftantrieb 10 ist weiter ein nur schematisch dargestellter Hilfsschalter 124 vorgesehen, dessen bewegbarer Kontakt über den betreffenden Wulst 48 einer Scheibe 32 betätigbar ist. Der Hilfsschalter 124 ist somit in Abhängigkeit von der jeweiligen Drehlage der Antriebswelle 28 geschlossen oder geöffnet. Der Hilfsschalter 124 wird für Rückmeldungszwecke oder für elektrische Verriegelungen des Federkraftantriebes 10 benötigt.In the spring-loaded drive 10 there is also an auxiliary switch 124, only shown schematically, the movable contact of which can be actuated via the bead 48 of a disk 32 in question. The auxiliary switch 124 is thus closed or opened depending on the respective rotational position of the drive shaft 28. The auxiliary switch 124 is required for feedback purposes or for electrical locking of the spring-loaded drive 10.

Die Montage des Federkraftantriebes 10 ist sehr einfach. Unter Verschieben der Antriebswelle 28 in axialer Richtung werden jeweils die nächsten Antriebselemente auf die Antriebswelle 28 aufgesteckt und am Schluss werden diese mittels den Muttern 114 gegeneinander verspannt.The assembly of the spring force drive 10 is very simple. When the drive shaft 28 is displaced in the axial direction, the next drive elements are each plugged onto the drive shaft 28 and at the end these are braced against one another by means of the nuts 114.

Der Federkraftantrieb 10 arbeitet wie folgt. In der in den Figuren dargestellten Einschaltstellung wird die Spiralfeder 68 mittels des Elektromotores 84 über das Untersetzungsgetriebe 86 das Zahnrad 74 und den Federkäfig 72 im Uhrzeigersinn um 360° aufgezogen. Die Antriebswelle 28 wird vom Abstützorgan 92 am Mitdrehen gehindert. Um den Leistungsschalter auszuschalten wird die Abstützwelle 100 im Uhrzeigersinn von Hand durch Betätigen der Ausschalttaste 106 oder elektrisch durch aktivieren des Ausschaltrelais 108 im Uhrzeigersinn verschwenkt. Die Abstützwelle 100 gibt den Abstützhebel 98 frei, welcher in Folge der Anpresskraft der Abstützwalze 88′ sich durch die Anfräsung 104 hindurch im Uhrzeigersinn verschwenkt. Dadurch wird die Antriebswelle 28 freigegeben, welche sich unter der Kraft der Spiralfeder 68 im Uhrzeigersinn um 150° dreht bis die Abstützwalze 90′ des Doppelhebels 90 am Abstützhebel 110 zur Anlage kommt. Wie dies insbesondere aus der Figur 2 ersichtlich ist, wird bei dieser Drehbewegung der Antriebswelle 28 das Folgeglied 36 durch die Nut 34 nach oben in die obere Endlage gezogen. Diese Bewegung wird über die Lasche 38, den Schwenkhebel 24 und den Schaltstössel 18 an den bewegbaren Schaltkontakt 20 übertragen, welcher in die Ausschaltstellung verschoben wird. Bevor allerdings der Schwenkhebel 24 in Ausschaltrichtung von der Lasche 38 mitgenommen wird, entspannt sich die Kontaktdruckfeder 58 bis der Bolzen 42 am unteren Ende des Durchlasses 40 ansteht. Im Bereich zwischen dem Beginn des Drehens der Antriebswelle 28 und der Mitnahme des Schwenkhebels 24 wird die von der Spiralfeder 68 und der Kontaktdruckfeder 58 freigegebene Energie in kinetische Energie umgesetzt, welche gegebenenfalls dazu dient aneinander angeschweisste Schaltkontakte 16,20 voneinander zu lösen. Unter der Kraft der Spiralfeder 68 werden die bewegbaren Schaltkontakte 20 in die Ausschaltstellung überführt.The spring force drive 10 operates as follows. In the switch-on position shown in the figures, the spiral spring 68 by means of the electric motor 84 via the reduction gear 86, the gear 74 and the spring cage 72 clockwise by 360 °. The drive shaft 28 is prevented from rotating by the support member 92. In order to switch off the circuit breaker, the support shaft 100 is pivoted clockwise by hand by actuating the switch-off button 106 or electrically by activating the switch-off relay 108 in a clockwise direction. The support shaft 100 releases the support lever 98 which, as a result of the pressing force of the support roller 88 ', swivels clockwise through the milling 104. As a result, the drive shaft 28 is released, which rotates clockwise by 150 ° under the force of the spiral spring 68 until the support roller 90 'of the double lever 90 comes to rest on the support lever 110. As can be seen in particular from FIG. 2, with this rotary movement of the drive shaft 28, the follower 36 is pulled upwards through the groove 34 into the upper end position. This movement is transmitted via the tab 38, the pivot lever 24 and the switching plunger 18 to the movable switching contact 20, which is moved into the off position. Before the pivot lever 24 is taken along by the tab 38 in the switch-off direction, the contact pressure spring 58 relaxes until the bolt 42 is in contact with the lower end of the passage 40. In the area between the start of the rotation of the drive shaft 28 and the entrainment of the pivot lever 24, the energy released by the spiral spring 68 and the contact pressure spring 58 is converted into kinetic energy, which is used, if appropriate, to detach switch contacts 16, 20 welded to one another. Under the force of the spiral spring 68, the movable switching contacts 20 are transferred to the off position.

Um nun den Leistungsschalter einzuschalten wird die Abstützwelle 100′ entwender von Hand durch Betätigen der Einschalttaste 106′ oder elektrisch durch Aktivieren des Einschaltrelais 108′ im Uhrzeigersinn verschwenkt. Dadurch wird in entsprechender Art und Weise der Abstützhebel 110 und somit der Doppelhebel 90 freigegeben. In Folge der noch in der Spiralfeder 68 gespeicherten Energie dreht sich die Antriebswelle 28 um 210° bis wiederum die Abstützwalze 80′ des Doppelhebels 88 am Abstützhebel 98 des Abstützorganes 92 anschlägt. Während dieser Einschaltdrehung um 210° wird das Folgeglied 36 von der oberen Endlage in die in den Figuren gezeigte untere Endlage und der Schalter in die Einschaltstellung überführt. Sobald die beiden Schaltkontakte 16,20 aneinander anstehen, wird die Kontaktdurckfeder 58 gespannt. In Folge der kleinen Steigung der Nuten 34 im Bereich des kürzesten Abstandes 50 wird ein Teil der von der Spiralfeder 68 abzugebenden Energie zuerst in kinetische Energie umgesetzt um den erwünschten Hub-Zeitverlauf des bewegbaren Schaltkontaktes 20 zu erreichen. In der Einschaltstellung der Antriebswelle 28 wird nun die Spiralfeder 68 wiederrum um 360° aufgezogen.In order to switch on the circuit breaker, the support shaft 100 'is swiveled clockwise by the user by pressing the switch 106' or electrically by activating the switch-on relay 108 '. As a result, the support lever 110 and thus the double lever 90 are released in a corresponding manner. As a result of the energy still stored in the spiral spring 68, the drive shaft 28 rotates through 210 ° until the support roller 80 'of the double lever 88 strikes the support lever 98 of the support member 92. During this switch-on rotation of 210 °, the follower 36 is transferred from the upper end position into the lower end position shown in the figures and the switch into the switch-on position. As soon as the two switching contacts 16, 20 are in contact with one another, the contact pressure spring 58 is tensioned. As a result of the small slope of the grooves 34 in the region of the shortest distance 50, part of the energy to be released by the spiral spring 68 is first converted into kinetic energy in order to achieve the desired stroke-time profile of the movable switching contact 20. In the switched-on position of the drive shaft 28, the spiral spring 68 is in turn pulled up by 360 °.

Um eine Schnellwiedereinschaltung und anschliessende erneute Ausschaltung zu gewährleisten ist die Spiralfeder 68 soweit vorgespannt, dass bei voll aufgezogener Spiralfeder 68 die gespeicherte Energie für ein Ausschalten ein erneutes Einschalten und Wiederauschalten genügt, wobei jedes mal sobald die Einschaltstellung erreicht ist, der Federkäfig 72 wieder um 360° angetrieben wird.In order to ensure quick reclosure and subsequent reclosure, the coil spring 68 is preloaded to such an extent that when the coil spring 68 is fully opened, the stored energy is sufficient for a reclosure to switch on and reclosure, the spring cage 72 rotating again by 360 as soon as the switch-on position is reached ° is driven.

Das Folgeglied 36 ist in den Nuten 34 zwangsläufig geführt, wodurch bezüglich der Bewegungsrichtung der Lasche 38 zwischen dem Folgeglied 36 und den Scheiben 32 eine formschlüssige Verbindung gebildet wird. Die Stellung des bewegbaren Schaltkontaktes 20 entspricht somit immer zwangsläufig der Stellung der Antriebswelle 28, korrigiert jeweils um den durch die Kontaktdruckfeder 58 bzw. den Durchlass 40 aufgenommenen Differenzhub.The follower 36 is inevitably guided in the grooves 34, whereby a positive connection is formed with respect to the direction of movement of the tab 38 between the follower 36 and the washers 32. The position of the movable switching contact 20 thus always corresponds to the position of the drive shaft 28, corrected in each case by the differential stroke absorbed by the contact pressure spring 58 or the passage 40.

Es ist auch denkbar pro Pol eine einzige Scheibe vorzusehen, welche dann vorzugsweise beiseitig eine je gegengleiche Nut aufweist. In diesem Fall ist die Lasche gabelförmige ausgebildet und weist an jeder Zinke ein Folgeglied auf, welches in der betreffenden Nut geführt ist. Es ist auch denkbar, dass die jeweilige Scheibe nur eine einzige Nut aufweist und das Folgeglied durch andere Mittel am Herausrutschen aus der Nut gehindert wird.It is also conceivable to provide a single disk per pole, which then preferably has a mutually opposite groove on each side. In this case, the tab is fork-shaped and has a follow link on each tine, which is guided in the relevant groove. It is also conceivable that the respective disc has only a single groove and the following link is prevented from slipping out of the groove by other means.

Die Lagerschilder 46′ können an einem Isoliertragrahmen angeformt sein, welche die Vakuumschaltröhren 12 mindestens Teilweise umgreift und an welchem die Vakuumschaltröhren 12 befestigt sein können. Es ist selbstverständlich auch denkbar, dass nur eine einzige Kurvenscheibenanordnung vorgesehen ist und der Hub des Folgegliedes 36 über gemeinsame Betätigungsorgane an alle Vakuumschaltröhren 12 übertragen wird.The end shields 46 'can be formed on an insulating support frame which engages around the vacuum interrupters 12 at least partially and to which the vacuum interrupters 12 can be attached. It is of course also conceivable that only a single cam disc arrangement is provided and the stroke of the follower 36 is transmitted to all vacuum interrupters 12 via common actuating members.

Selbstverständlich ist es auch denkbar, dass das Folgeglied an einem Schwenkhebel angeordnet ist. Es ist auch möglich die Lasche direkt ohne Schwenkhebel an den Kontaktstössel anzukoppeln wenn der Federkraftantrieb 10 und die Vakuumschaltröhren eine dementsprechende gegenseitige Lage aufweisen. Anstelle von Vakuumschaltröhren können auch andere Unterbrecher vorgesehen sein. Durch Austauschen von einzelnen Antriebselementen ist der Federkraftantrieb an die Erfordernisse der verschiedensten Unterbrecher anpassbar.Of course, it is also conceivable that the follower is arranged on a pivot lever. It is also possible to couple the tab directly to the contact plunger without a swivel lever if the spring-loaded drive 10 and the vacuum interrupters are mutually corresponding Have location. Instead of vacuum interrupters, other interrupters can also be provided. By replacing individual drive elements, the spring-loaded drive can be adapted to the requirements of a wide variety of interrupters.

Claims (15)

  1. A spring energy drive for a circuit breaker, more particularly a vacuum switch for medium voltage, comprising a drive shaft (28), driven by means of a spring arrangement (68) in the same direction of rotation for closing and opening the circuit breaker (12) and releasably prevented from rotating in the opening and the closing position by means of support devices (92, 94), on which drive shaft is seated, rotationally fixed, at least one disc (32) of a cam disc arrangement (30) with a radial cam (34) acting with a pressing effect on a lifting element (36, 38) operatively connected to at least one movable switching contact (20), so as to move the lifting element (36, 38) reciprocally between two end positions, characterized in that the disc (32) has at least one groove (34) forming the radial cam, extending continuously round the drive shaft (28) and open in the direction of the drive shaft (28), which groove also acts with a pulling action on the lifting element (36, 38).
  2. A spring energy drive according to claim 1, characterized in that a follower element (36) guided in the groove (34) is provided on the lifting element (36, 38).
  3. A spring energy drive according to claim 1 or 2, characterized in that the lifting element (36, 38) is compulsorily guided in the groove (34).
  4. A spring energy drive according to one of claims 1 to 3, characterized in that in the case of a multipole circuit breaker, there are provided for each pole a cam disc arrangement (30) and a lifting element (36, 38) operatively connected to the movable switching contact (20) of the relevant pole.
  5. A spring energy drive according to one of claims 2 to 4, characterized in that the or each cam disc arrangement (30) has two discs (32) spaced apart from one another, the grooves (34) of which are open towards one another, and the follower element (36, 38) is guided in both grooves (34).
  6. A spring energy drive according to one of claims 2 to 4, characterized in that the disc has on either side a respective groove forming the radial cam, encircling the drive shaft and open in the direction of the drive shaft, the lifting element is designed in the shape of a fork and each prong of the lifting element is provided with a follower element guided in the relevant groove.
  7. A spring energy drive according to one of claims 1 to 6, characterized in that the grooves are milled into the discs.
  8. A spring energy drive according to one of claims 1 to 5, characterized in that the discs (32) are stamped from a metal sheet and the grooves (34) are impressed into them in preferably the same operation.
  9. A spring energy drive according to claim 8, characterized in that on the opposite side of the discs (32) to the grooves (34) are provided switching devices (124) which are operable by the beads (48) formed when the grooves (34) are impressed.
  10. A spring energy drive according to one of claims 1 to 9, characterized in that the lifting element (36, 38), via a preferably prestressed contact compression spring arrangement (26) which acts with a pulling action in the unstressed position, acts on the relevant switching contact (20), optionally via a rocking lever (24).
  11. A spring energy drive according to one of claims 1 to 10, characterized in that the lifting element (36, 38) is mounted on two rockers (24, 52), with its longitudinal extent extending substantially at right angles to the drive shaft (28) serving as connecting bar, one rocker preferably being formed by the rocking lever (24).
  12. A spring energy drive according to one of claims 1 to 11, characterized in that the drive shaft (28) has a polygonal or star-shaped cross-section and all the elements (30, 32, 64, 88, 90), connected to the drive shaft (28) so as to be rotationally fixed, are mounted thereon with form fit, if appropriate with the interposition of spacers (118, 118′, 120) and are held in the axial direction by means of retaining elements (114).
  13. A spring energy drive according to claim 12, characterized in that two support levers (88, 90), displaced relative to one another, are seated on the drive shaft (28) so as to be rotationally fixed, each cooperating with a fixed support element (92, 94) for releasably fixing the drive shaft (28) in the opening or closing position.
  14. A spring energy drive according to claim 12 or 13, characterized in that the spring arrangement has a spiral spring (68), the inside end (66) of which is connected to a spring hub (64) mounted on the drive shaft (28) so as to be rotationally fixed, and the outside end (70) of which is connected to a spring cage (72) mounted so as to rotate freely preferably on the spring hub (64), which spring cage is operatively connected to a return stop and a winding means (84).
  15. A spring energy drive according to one of claims 1 to 14, characterized in that the drive shaft and preferably other drive parts are mounted on at least one plate moulded to an insulating carrier frame of the circuit breaker which at least partially encloses the interrupter elements or vacuum switch tubes.
EP90103414A 1989-03-03 1990-02-22 Spring motor driving mechanism for a circuit breaker Expired - Lifetime EP0385265B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH800/89 1989-03-03
CH80089 1989-03-03

Publications (2)

Publication Number Publication Date
EP0385265A1 EP0385265A1 (en) 1990-09-05
EP0385265B1 true EP0385265B1 (en) 1994-10-12

Family

ID=4195475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90103414A Expired - Lifetime EP0385265B1 (en) 1989-03-03 1990-02-22 Spring motor driving mechanism for a circuit breaker

Country Status (7)

Country Link
US (1) US4996397A (en)
EP (1) EP0385265B1 (en)
JP (1) JP3025970B2 (en)
AT (1) ATE112885T1 (en)
DE (1) DE59007411D1 (en)
DK (1) DK0385265T3 (en)
ES (1) ES2060832T3 (en)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02281521A (en) * 1989-03-16 1990-11-19 Sprecher Energ Ag Multipole vacuum breaker and insulating support frame for multipole vacuum breaker
CH682431A5 (en) * 1991-09-10 1993-09-15 Sprecher Energie Ag Spring drive for MV or HV load switch - has intermediate drive automatically disengaged when spring is fully wound to prevent overwinding
CH687051A5 (en) * 1992-02-28 1996-08-30 Gec Alsthom T & D Ag A method of tensioning an accumulator spring of a drive of a high or medium voltage circuit breaker and circuit breaker for implementing the method.
GB2271617B (en) * 1992-10-08 1996-08-21 Peter Ralph Gutteridge Water closet branch connection
JPH06215672A (en) * 1993-01-20 1994-08-05 Toshiba Corp Vacuum circuit breaker
US5436414A (en) * 1993-07-16 1995-07-25 Eaton Corporation Drive mechanism for circuit interrupters
JP3095590B2 (en) * 1993-09-24 2000-10-03 株式会社東芝 Circuit breaker
FR2772184B1 (en) * 1997-12-08 2000-01-28 Gec Alsthom T & D Sa CONTROL OF INTERROLLING OF A CIRCUIT BREAKER AND A DISCONNECTOR
US5864109A (en) * 1998-01-30 1999-01-26 Lg Industrial Systems Co., Ltd. Terminal connection locking apparatus for vacuum circuit breaker
JP3589061B2 (en) * 1999-01-25 2004-11-17 株式会社日立製作所 Vacuum switchgear and method for opening and closing vacuum switchgear
FR2794278B1 (en) * 1999-05-28 2001-08-10 Alstom QUICK CONTROL DEVICE FOR A HIGH VOLTAGE CONNECTION APPARATUS, IN PARTICULAR AN EARTH ISOLATOR
FR2794279B1 (en) * 1999-05-28 2001-07-20 Alstom CONTROL OF A MULTIPOLES CIRCUIT BREAKER HAVING A DISTANCE BETWEEN VARIABLE POLES
JP4601487B2 (en) * 2005-05-02 2010-12-22 三菱電機株式会社 Gas insulated switchgear
MX2008001886A (en) * 2005-08-10 2008-04-11 Siemens Ag Circuit breaker.
FR2896617B1 (en) * 2006-01-24 2009-11-20 Schneider Electric Ind Sas ACTUATING DEVICE FOR CONTROLLING THE RACE SPEED OF MOBILE CONTACTS IN A CONTACTOR
DE202006012002U1 (en) * 2006-08-03 2007-12-20 Walter Kraus Gmbh Drive for a switch in electrical systems
FI121155B (en) * 2008-06-19 2010-07-30 Abb Oy Control unit for switching device
US8664556B2 (en) * 2009-11-03 2014-03-04 Mitsubishi Electric Corporation Switch device operating mechanism
US9324518B2 (en) * 2012-04-13 2016-04-26 Abb Technology Ag Self-contained link module for gang-style high voltage dead tank breaker
CA2869932C (en) * 2012-04-13 2019-07-16 Abb Technology Ag Retaining structure for maintaining factory settings of gang-style linkage for high voltage dead tank breaker while mechanism is removed
DE102012103489B4 (en) * 2012-04-20 2015-11-12 Maschinenfabrik Reinhausen Gmbh On-load tap-changer and its use for voltage regulation in a distribution transformer
CN102664355B (en) * 2012-05-21 2015-01-21 国家电网公司 Medium-voltage dual-power combined electrical appliance
DE102012104378B4 (en) * 2012-05-22 2015-09-17 Maschinenfabrik Reinhausen Gmbh Arrangement of vacuum interrupters in a diverter switch
JP5922507B2 (en) * 2012-06-18 2016-05-24 株式会社日立製作所 Electromagnetic switchgear
EA025418B1 (en) * 2013-06-06 2016-12-30 Открытое Акционерное Общество "Нпо "Русский Электропривод" A high-speed dc switch
US9472359B2 (en) 2014-04-24 2016-10-18 Eaton Corporation Trip latch assemblies for circuit breakers and related circuit breakers
US9373456B2 (en) 2014-04-24 2016-06-21 Eaton Corporation Circuit breakers with clock spring drives and/or multi-lobe drive cams and related actuators and methods
DE102014116398A1 (en) * 2014-11-11 2016-05-12 Eaton Electrical Ip Gmbh & Co. Kg Device for actuating a rotary switch
GB2533372A (en) * 2014-12-18 2016-06-22 Eaton Ind (Netherlands) B V Device for operating a switching device
EP3086341B1 (en) * 2015-04-20 2017-08-02 General Electric Technology GmbH Main shaft for the operation mechanism of a circuit breaker
GB2557583A (en) * 2016-09-14 2018-06-27 Eaton Ind Netherlands Bv Mechanism for opening and closing a circuit breaker
RU180079U1 (en) * 2017-07-25 2018-06-04 Общество с ограниченной ответственностью "МФК ТЕХЭНЕРГО" LOW VOLTAGE UNIT WITH INSPECTION MECHANISM
DE102017222943A1 (en) * 2017-12-15 2019-06-19 Siemens Aktiengesellschaft Arrangement and method for driving a movable contact of a vacuum interrupter in a high-voltage circuit breaker
CN111313264B (en) * 2019-12-09 2021-04-13 双杰电气合肥有限公司 Solid insulation bus-bar connection cabinet
CN111952113B (en) * 2020-06-23 2022-05-31 祥兴电气有限公司 Vacuum circuit breaker on post

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3204049A (en) * 1962-02-09 1965-08-31 Asea Ab Tap changing apparatus with waveshaped control means and roller selector arm structure
DE1254755B (en) * 1964-11-14 1967-11-23 Reinhausen Maschf Scheubeck Permanent main contact for diverter switch of step transformers
US3787649A (en) * 1972-08-04 1974-01-22 Allis Chalmers Vacuum switch cam operating mechanism with contact loading compression spring
US4016385A (en) * 1975-10-08 1977-04-05 Bell Telephone Laboratories, Incorporated High voltage transfer switch with cam controlled overlap during transfer
DE2702962B2 (en) * 1977-01-25 1979-12-13 Elektrotechnische Werke Fritz Driescher & Soehne, Gmbh & Co, 8052 Moosburg Vacuum switchgear
GB8502036D0 (en) * 1985-01-28 1985-02-27 Ass Elect Ind Interrupter/isolator

Also Published As

Publication number Publication date
US4996397A (en) 1991-02-26
JP3025970B2 (en) 2000-03-27
EP0385265A1 (en) 1990-09-05
DE59007411D1 (en) 1994-11-17
JPH02278626A (en) 1990-11-14
ATE112885T1 (en) 1994-10-15
DK0385265T3 (en) 1994-11-14
ES2060832T3 (en) 1994-12-01

Similar Documents

Publication Publication Date Title
EP0385265B1 (en) Spring motor driving mechanism for a circuit breaker
DE69306728T2 (en) Actuator for a three-position switch
DE1638154C3 (en) Auto switch
EP0658909B1 (en) Drive mechanism for a power circuit breaker
DE2835879A1 (en) DRIVE CONNECTION BETWEEN AN OPTIONAL HANDLE AND A MOTOR DRIVE ON ONE SIDE AND A SPRING TENSION SHAFT ON THE OTHER SIDE IN THE OPERATING MECHANISM OF A SELF-SWITCH
DE10149539B4 (en) Switching mechanism for a circuit breaker with a rotary control
EP0656641B1 (en) Trip unit for circuit breaker or protective switches
DE2633218B2 (en) Drive mechanism for contact movement in a circuit breaker
CH594279A5 (en) Toggle drive unit for medium voltage switch - has symmetrical double spring which reduces bearing load and gives compact construction
CH662210A5 (en) MOTOR PROTECTION SWITCH.
EP1328956B1 (en) Current limiting low-voltage power circuit breaker
EP0744080B1 (en) Low-voltage power switch with relative auxiliary switch
EP0586733B1 (en) Snap action driving arrangement for circuit breakers
EP0764337B1 (en) Drive arrangement for vacuum power circuit breakers, in particular in a tri-polar configuration
DE2511804C2 (en) Device for operating electrical switching devices
DE19839252A1 (en) Switch mechanism for circuit breaker
DE19845800B4 (en) Low-voltage circuit breaker with means for resetting a magnetic release
DE69205503T2 (en) Improved drive mechanism for an electrical switch, especially a circuit breaker or circuit breaker.
DE2216272A1 (en) HIGH VOLTAGE SWITCHES, IN PARTICULAR DISCONNECTORS
DE661451C (en) Electrical switching device for contactors with immediate switching on and off by hand and delayed automatic switching off
DE660695C (en) Two-stage or multi-stage manually operated starter switch designed as a roller switch
CH465030A (en) Electric switch
DE2841821A1 (en) DRIVE DEVICE FOR ELECTRIC CIRCUIT BREAKERS WITH SHORT BREAK
DE733979C (en) Electrical switch, the switching axis of which can be alternately adjusted in one and the other direction of rotation by a single push button
DE952730C (en) Spring quick switch device, especially for electrical circuit breakers

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19900623

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LI NL SE

17Q First examination report despatched

Effective date: 19930519

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GEC ALSTHOM T&D AG

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed
AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 112885

Country of ref document: AT

Date of ref document: 19941015

Kind code of ref document: T

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REF Corresponds to:

Ref document number: 59007411

Country of ref document: DE

Date of ref document: 19941117

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2060832

Country of ref document: ES

Kind code of ref document: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19941103

ET Fr: translation filed
EAL Se: european patent in force in sweden

Ref document number: 90103414.0

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: SIEMENS AG GR PA BLN

Effective date: 19950711

NLR1 Nl: opposition has been filed with the epo

Opponent name: SIEMENS AG GR PA BLN

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBO Opposition rejected

Free format text: ORIGINAL CODE: EPIDOS REJO

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 19960725

NLR2 Nl: decision of opposition
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 19980126

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990301

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Free format text: GEC ALSTHOM T&D AG TRANSFER- ALSTOM AG

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20000124

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20000125

Year of fee payment: 11

Ref country code: NL

Payment date: 20000125

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20000208

Year of fee payment: 11

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20000217

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010222

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010223

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010228

BERE Be: lapsed

Owner name: GEC ALSTHOM T&D A.G.

Effective date: 20010228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010901

EUG Se: european patent has lapsed

Ref document number: 90103414.0

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20010901

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20020916

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050222

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090225

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20090223

Year of fee payment: 20

Ref country code: GB

Payment date: 20090102

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090217

Year of fee payment: 20

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20100221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20100221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20100222