EP2545574B1 - Elektrische mittel- und hochspannungsschalter mit rückstellung beim schliessen und einfügungsvorrichtung mit einschaltwiderstand - Google Patents

Elektrische mittel- und hochspannungsschalter mit rückstellung beim schliessen und einfügungsvorrichtung mit einschaltwiderstand Download PDF

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Publication number
EP2545574B1
EP2545574B1 EP11706836.1A EP11706836A EP2545574B1 EP 2545574 B1 EP2545574 B1 EP 2545574B1 EP 11706836 A EP11706836 A EP 11706836A EP 2545574 B1 EP2545574 B1 EP 2545574B1
Authority
EP
European Patent Office
Prior art keywords
contact
resistance
movable
control rod
return
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.)
Active
Application number
EP11706836.1A
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English (en)
French (fr)
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EP2545574A1 (de
Inventor
André Cimala
Gwénaël MARQUEZIN
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 Technology GmbH
Original Assignee
Alstom Technology AG
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Publication date
Application filed by Alstom Technology AG filed Critical Alstom Technology AG
Publication of EP2545574A1 publication Critical patent/EP2545574A1/de
Application granted granted Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/167—Impedances connected with contacts the impedance being inserted only while opening the switch
    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid

Definitions

  • the invention relates to the field of electrical equipment of high and very high voltages, including switches and / or circuit breakers using the insertion of one or more resistors, during current closing operations.
  • a device for inserting a resistance to the closing of a current interruption device comprising a breaking chamber, a movable main contact 15, the insertion contacts 12 and 13 of the resistor being arranged in the breaking chamber of the apparatus with a displacement along a path parallel to that of the moving main contact 15.
  • the closing resistor is in alignment with the chamber disposed in the interrupting chamber and is not visible in the drawings, one of the contacts ensuring the insertion of the closing resistor is attached to one of the main break contacts and is disposed of sliding way with respect to one of the main break contacts.
  • Temporary elastic connection means are used between the movable resistance contact and its support element so that the movable resistance contact can take two defined positions.
  • These temporary elastic connection means are composed of several balls 19, placed in holes and each pushed by a spring 18 towards the inner wall of the movable resistance contact 12, which comprises two series of notches 20 and 21 corresponding to the two positions of the means of temporary elastic connection.
  • This system is relatively complicated mechanically.
  • this electrical switch has a flexible toroidal coil spring placed in a groove of the control rod and an energy accumulation system bearing on the movable rod which is intended to be loaded up to a certain value. determined for which the flexible toroidal coil spring deforms under the force and allows the removal of the movable contact.
  • the elastic connecting element between the movable resistance insertion contact and the control rod consists of the spring of the flexible toroidal helical type placed in a notch of the control rod (or the movable contact of insertion of resistance) and a groove of the control rod (or movable contact), and the device comprises one or more return springs.
  • it comprises an intermediate contact for effecting the passage of the insertion current of the resistor between one end of the movable resistance insertion contact and the contact carrier.
  • At least a portion of the insertion resistor is placed around the control rod.
  • the first intended use of the switch according to the invention is provided for a resistance insertion device according to the invention can be used in parallel with the switch-off chamber of the switch on which the assembly is installed. It is recalled that the goal is to insert resistors for a time ranging from four milliseconds to fifteen milliseconds in order to dissipate some of the energy that may cause overvoltages during closing operations under long voltage lines.
  • the resistance insertion device makes it possible, in the resistance insertion contact, to return to the open position before the main contacts of the switch or circuit breaker have the time to close and reopen during the first time. a closing / opening operation. This is intended not to interfere with the switch or the circuit breaker, during the opening operation, in particular to maintain the recovery voltage during the cut. For this reason, the contacts of the resistor insertion device must be at a sufficient distance to allow to obtain certain recovery voltage, when opening the main contacts of the switch. or circuit breaker on which is installed the device according to the invention.
  • the insertion device has a control rod 1, or movement input link, which is directly related to the travel of the main breaking chamber of the switch or circuit breaker, the races of those may be different.
  • This control rod 1 is temporarily secured to a movable resistance insertion contact 2 whose end 2A is provided to come into contact with the end 6A of a fixed contact insertion resistance 6.
  • All these elements are, in the embodiment described here, a shape of revolution about a common axis 10, which may preferably be parallel to the axis of the direction of movement of the main contacts of the switch or circuit breaker, to which the insertion device according to the invention.
  • a contact carrier 3 makes it possible to maintain the assembly and to make the current flow, if necessary, for example if the control rod 1 is made of insulating material and the resistor itself, which is not not shown in this figure is placed around it.
  • an intermediate contact 5 placed between the end of a contact carrier 3 and the movable contact for resistance insertion 2 is used.
  • the contact carrier 3 serves as a guide for the moving contact of resistance insertion 2.
  • the movable resistance insertion contact 2 comprises a shoulder 9 itself carrying a band 7 to guide its movements in the contact carrier 3.
  • This contact carrier 3 is integral with the movable resistance insertion contact 2 and the control rod 1.
  • One or more return springs 4 are placed in the cylindrical space formed between the inner face of the contact carrier 3 and the outer face of the movable resistor insertion contact 2.
  • the return springs 4 can serve as drivers for -vis resistance to insert.
  • the movable resistance insertion contact 2 and the control rod 1 have moved to the right until the end 2A of the movable insertion contact 2 penetrates inside the end 6A and the fixed resistance insertion contact to establish the electrical contact between them and make the resistance operational. As a result, the springs 4 have been compressed.
  • the temporary connection means between the control rod 1 and the movable resistance insertion contact 2 consist of a groove 1A, made on the outer surface of the control rod 1, of a helical coil spring 8 which is flexible and a notch 2B, made on the inner surface of the movable resistance insertion contact 2.
  • the latter offers a resistance such that it pushes, via a shoulder 9, the movable resistance insertion contact 2 towards its position.
  • the flexible toric coil spring 8 deforming under the pressure of the force. As a result, it leaves the notch 2B of the movable resistance insertion contact 2 and allows the latter to move back to its initial position.
  • the figure 4 shows the recoil position of the movable resistance contact 2.
  • the control rod has slightly continued its translational movement along the axis 10, keeping the flexible coil spring 8 in its notch 1A.
  • the interrupting chamber drives the control rod 1 in the opposite direction, that is to say it returns to the position of the figure 1 , the flexible coil spring 8 finding the notch 2B of the movable resistance insertion contact 2.
  • Another shock can be deliberately provoked in another way.
  • a second type of spring may be added to the return springs 4, but having a different stiffness to cause a sudden increase in end-of-stroke forces.
  • the flexible toroidal coil spring 8 used in the switch according to the invention is a known spring.
  • This type of spring is of the type of the one marketed, inter alia, by the company BAL SEAL ENGINEERING.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Push-Button Switches (AREA)

Claims (4)

  1. Elektrischer Mittel- bzw. Hochspannungsschalter, der mit einer mechanischen Vorrichtung ausgestattet ist, enthaltend:
    - eine Steuerstange (1) und
    - ein bewegliches Kontaktstück (2) zum Einfügen eines Widerstands, das vorübergehend fest mit der Steuerstange (1) verbindbar ist,
    dadurch gekennzeichnet, dass er eine nachgiebige torische Schraubenfeder (8) aufweist, die in einer Nut der Steuerstange angeordnet ist, sowie eine Energiespeichereinrichtung (4), die sich am beweglichen Kontaktstück (2) zum Einfügen eines Widerstands abstützt und die dazu bestimmt ist, bis zu einem bestimmten Maß beaufschlagt zu werden, bei dem die nachgiebige torische Schraubenfeder (8) sich unter der Kraft verformt und das Herausnehmen des beweglichen Kontaktstücks (2) zum Einfügen eines Widerstands gestattet.
  2. Vorrichtung zum Einfügen eines Widerstands, enthaltend:
    - zwei Kontaktstücke zum Einfügen eines Widerstands, nämlich ein bewegliches (2) und ein feststehendes (6);
    - die Steuerstange (1), die vorübergehend fest mit dem beweglichen Kontaktstück (2) zum Einfügen eines Widerstands verbunden ist;
    - einen Kontaktträger (3) für das bewegliche Kontaktstück (2) zum Einfügen eines Widerstands, der den in dem Widerstand fließenden Strom durchleiten kann;
    - zumindest eine Rückstellfeder (4), welche die Energiespeichereinrichtung darstellt und gestattet, das bewegliche Kontaktstück (2) zum Einfügen eines Widerstands in seine Ausgangsstellung zurückzubringen, und zwischen einem rohrförmigen Kontaktträger (3) und dem beweglichen Kontaktstück (2) zum Einfügen eines Widerstands angeordnet ist, das auch rohrförmig und fest mit der Steuerstange (1) verbunden ist, wobei die zumindest eine Rückstellfeder (4) gegenüber dem Widerstand als Leiter dienen kann;
    - ein Führungsband (7) zwischen dem beweglichen Kontaktstück (2) zum Einfügen eines Widerstands und dem Kontaktträger (3); und
    - ein elastisches Verbindungselement zum vorübergehenden Verbinden zwischen dem beweglichen Kontaktstück (2) zum Einfügen eines Widerstands und der Steuerstange (1), um diese beiden Teile vorübergehend fest zu verbinden,
    dadurch gekennzeichnet, dass das elastische Verbindungselement zum elastischen Verbinden zwischen dem beweglichen Kontaktstück (2) zum Einfügen eines Widerstands und der Steuerstange (1) aus einer nachgiebigen torischen Schraubenfeder (8) besteht, die entweder in einer Einkerbung (2B) des beweglichen Kontaktstücks (2) zum Einfügen eines Widerstands und einer Nut (1A) der Steuerstange (1) angeordnet ist oder aber in einer Einkerbung der Steuerstange (1) und einer Nut des beweglichen Kontaktstücks (2) zum Einfügen eines Widerstands angeordnet ist, und dass sie eine oder mehrere Rückstellfedern (4) aufweist.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass sie ein Zwischenkontaktstück (5) aufweist, um den Durchfluss des Einfügestroms zwischen dem Ende (2a) des beweglichen Kontaktstücks (2) zum Einfügen eines Widerstands und dem Kontaktträger (3) sicherzustellen.
  4. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass ein Teil oder die Gesamtheit des Einfügewiderstands um die Steuerstange (1) herum angeordnet ist.
EP11706836.1A 2010-03-09 2011-03-08 Elektrische mittel- und hochspannungsschalter mit rückstellung beim schliessen und einfügungsvorrichtung mit einschaltwiderstand Active EP2545574B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1051680A FR2957451A1 (fr) 2010-03-09 2010-03-09 Interrupteur electrique haute tension avec retour sur fermeture et dispositif d'insertion d'une resistance
PCT/EP2011/053466 WO2011110557A1 (fr) 2010-03-09 2011-03-08 Interrupteur electrique moyenne et haute tension avec retour sur fermeture et dispositif d'insertion d'une resistance

Publications (2)

Publication Number Publication Date
EP2545574A1 EP2545574A1 (de) 2013-01-16
EP2545574B1 true EP2545574B1 (de) 2015-04-08

Family

ID=42938357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11706836.1A Active EP2545574B1 (de) 2010-03-09 2011-03-08 Elektrische mittel- und hochspannungsschalter mit rückstellung beim schliessen und einfügungsvorrichtung mit einschaltwiderstand

Country Status (5)

Country Link
US (1) US8952285B2 (de)
EP (1) EP2545574B1 (de)
CN (1) CN102834887B (de)
FR (1) FR2957451A1 (de)
WO (1) WO2011110557A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3748658B1 (de) 2019-06-04 2022-03-23 General Electric Technology GmbH Kontaktanordnung für einschaltwiderstände

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH524887A (de) * 1970-12-14 1972-06-30 Bbc Brown Boveri & Cie Elektrischer Kompressionsschalter
US3914569A (en) * 1974-05-02 1975-10-21 Ite Imperial Corp Puffer interrupter with downstream initiated arc
DE2708546C3 (de) * 1977-02-28 1980-09-11 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Autopneumatischer Druckgas-Leistungsschalter
FR2450501A1 (fr) 1979-03-02 1980-09-26 Alsthom Cgee Dispositif d'insertion de resistance a la fermeture d'un appareil d'interruption
DE3312797A1 (de) * 1982-05-28 1983-12-01 BBC Aktiengesellschaft Brown, Boveri & Cie., 5401 Baden, Aargau Hochspannungs-leistungsschalter
US4491707A (en) * 1982-09-07 1985-01-01 S&C Electric Company Electrical contact assembly for a current interrupting unit
DE3322597A1 (de) * 1983-05-31 1984-12-06 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
ATE115765T1 (de) 1991-04-12 1994-12-15 Gec Alsthom T & D Ag Druckgasschalter.
FR2688624A1 (fr) * 1992-03-10 1993-09-17 Alsthom Gec Contact a inertie pour disjoncteur permettant l'insertion temporaire d'une impedance.
FR2786606B1 (fr) * 1998-11-30 2001-01-05 Alstom Technology Mecanisme d'insertion d'une resistance de fermeture avec un verrouillage a bille
TWI227033B (en) * 2002-03-21 2005-01-21 Lg Ind Systems Co Ltd Switching mechanism of circuit breaker for gas insulated switchgear
AU2003279006A1 (en) 2002-09-30 2004-04-23 Bal Seal Engineering Co., Inc. Canted coil springs various designs
DE102010062343A1 (de) * 2010-12-02 2012-06-06 Siemens Aktiengesellschaft Elektrokontaktanordnung
KR101786518B1 (ko) * 2011-04-27 2017-10-18 엘에스산전 주식회사 가스 절연 차단기용 소호부

Also Published As

Publication number Publication date
US8952285B2 (en) 2015-02-10
CN102834887A (zh) 2012-12-19
EP2545574A1 (de) 2013-01-16
US20130119022A1 (en) 2013-05-16
FR2957451A1 (fr) 2011-09-16
WO2011110557A1 (fr) 2011-09-15
CN102834887B (zh) 2015-05-20

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