EP0475247B1 - Operating device for circuit breaker - Google Patents

Operating device for circuit breaker Download PDF

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Publication number
EP0475247B1
EP0475247B1 EP91114835A EP91114835A EP0475247B1 EP 0475247 B1 EP0475247 B1 EP 0475247B1 EP 91114835 A EP91114835 A EP 91114835A EP 91114835 A EP91114835 A EP 91114835A EP 0475247 B1 EP0475247 B1 EP 0475247B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
motor
shaft
arm
fixed
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
EP91114835A
Other languages
German (de)
French (fr)
Other versions
EP0475247A1 (en
Inventor
Edmond Thuries
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.)
Alstom Holdings SA
Original Assignee
GEC Alsthom SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GEC Alsthom SA filed Critical GEC Alsthom SA
Publication of EP0475247A1 publication Critical patent/EP0475247A1/en
Application granted granted Critical
Publication of EP0475247B1 publication Critical patent/EP0475247B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • 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
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/40—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • 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
    • H01H2003/3094—Power arrangements internal to the switch for operating the driving mechanism using spring motor allowing an opening - closing - opening [OCO] sequence

Definitions

  • the present invention relates to a control for a circuit breaker, in particular for a medium or high voltage circuit breaker and making it possible to perform standardized opening and closing cycles.
  • An object of the present invention is to provide a circuit breaker control, of the electromechanical type, comprising a small number of mechanical parts and, consequently, of low cost price and inexpensive maintenance.
  • the object is achieved by a circuit breaker according to claim.
  • the references 10, 20 and 30 respectively designate ceramic insulating columns supporting the breaking chambers of a three-pole circuit breaker. These chambers are operated by rods, respectively referenced 11, 21 and 31, connected by connecting rods 12, 22, 32 to a common operating shaft 40. This shaft 40 is set in motion by the control of the invention, visible more in detail in Figure 2.
  • the control of the invention comprises a DC motor 50, the shaft 51 of which is coaxial with the aforementioned shaft 40 and integral with the latter. On the shaft 51 is wedged an arm 52 at one end of which is fixed a first end of a spring 53 the other end of which is attached to a fixed point 54.
  • the arm can take a first position, in which the spring 53 is banded, and corresponding to an engaged position of the circuit breaker.
  • the arm is held in this first position by a retractable stop 55, for example by means of an electromagnet 56 controlled by a programmed electronic circuit 57.
  • the electronic circuit is supplied by an electric accumulator 58. This accumulator also supplies, at through the electronic circuit 57, the DC motor 50.
  • the electronic circuit When it is desired to close the circuit breaker, the electronic circuit supplies the motor 50 which rotates the shaft 51 and the arm 53 in the direction of the arrow F2 in broken lines. This operation causes the spring 53 to be reset and the circuit breaker to close again.
  • a direct current motor for example with series excitation, has a high starting torque so that it is possible to reset the spring and close the circuit breaker in a time compatible with that fixed by the standardized OFO cycles.
  • the electronic circuit is programmed to supply the electric motor for the time just necessary to close the circuit breaker and reset the spring and to dampen movement at the end of the stroke. If a second opening is requested, it will proceed as the first.
  • the implementation of the invention requires the use of a 24 or 48 volt accumulator battery, of a capacity that a person skilled in the art will be able to calculate according to the type of circuit breaker to be controlled and the nature of the cycles to be performed.
  • the order of the invention comprises a reduced number of mechanical parts and consequently, a moderate cost price and a low maintenance cost.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Switches With Compound Operations (AREA)
  • Keying Circuit Devices (AREA)
  • Vehicle Body Suspensions (AREA)
  • Push-Button Switches (AREA)
  • Lock And Its Accessories (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Breakers (AREA)
  • Protection Of Generators And Motors (AREA)

Abstract

Operating device for a circuit breaker characterised by the use of a d.c. motor (50) and comprising just a single spring (53), for triggering. <IMAGE>

Description

La présente invention est relative à une commande pour disjoncteur, notamment pour disjoncteur à moyenne ou haute tension et permettant d'effectuer des cycles normalisés d'ouverture et de fermeture.The present invention relates to a control for a circuit breaker, in particular for a medium or high voltage circuit breaker and making it possible to perform standardized opening and closing cycles.

On connaît, notamment par le document EP-A1-0221430, une commande pour disjoncteur permettant d'effectuer un cycle rapide d'ouverture, de fermeture et de réouverture (cycle OFO) et comprenant deux ressorts agencés pour que la détente de l'un permette une manoeuvre du disjoncteur et simultanément le réarmement de l'autre ressort. Des commandes de ce type comprennent un grand nombre de pièces mécaniques dont l'assemblage et la maintenance sont coûteux.Is known, in particular from document EP-A1-0221430, a control for a circuit breaker making it possible to carry out a rapid opening, closing and reopening cycle (OFO cycle) and comprising two springs arranged so that the relaxation of one allows operation of the circuit breaker and simultaneously resetting of the other spring. Orders of this type include a large number of mechanical parts whose assembly and maintenance are costly.

L'art antérieur est également illustré par le document DE-C-966573 qui décrit une commande à air comprimé ne comportant qu'un seul ressort et comprenant un électro-aimant commandant un pilote pour le fonctionnement du piston de puissance, et par le document EP-A-0372449 qui décrit une commande de grande puissance comprenant deux ressorts actionnés par un moteur, l'ensemble étant piloté par une commande de faible puissance.The prior art is also illustrated by document DE-C-966573 which describes a compressed air control comprising only one spring and comprising an electromagnet controlling a pilot for the operation of the power piston, and by the document EP-A-0372449 which describes a high power control comprising two springs actuated by a motor, the assembly being controlled by a low power control.

Un but de la présente invention est de réaliser une commande de disjoncteur, de type électromécanique, comportant un faible nombre de pièces mécaniques et, par suite, de prix de revient peu élevé et d'entretien peu onéreux.An object of the present invention is to provide a circuit breaker control, of the electromechanical type, comprising a small number of mechanical parts and, consequently, of low cost price and inexpensive maintenance.

Le but est atteint par un disjoncteur selon la revendication.The object is achieved by a circuit breaker according to claim.

L'invention sera bien comprise à la lecture de la description d'un exemple de réalisation de l'invention, en référence au dessin annexé dans lequel:

  • la figure 1 est une vue partielle en élévation d'un disjoncteur tripolaire muni d'une commande selon l'invention,
  • la figure 2 est une vue schématique en perspective de la commande précitée.
The invention will be clearly understood on reading the description of an exemplary embodiment of the invention, with reference to the appended drawing in which:
  • FIG. 1 is a partial view in elevation of a three-pole circuit breaker provided with a control according to the invention,
  • Figure 2 is a schematic perspective view of the above command.

Dans la figure 1, les références 10, 20 et 30 désignent respectivement des colonnes isolantes en céramique supportant les chambres de coupure d'un disjoncteur tripolaire. Ces chambres sont manoeuvrées par des tringles, respectivement référencées 11, 21 et 31, reliées par des bielles 12, 22, 32 à un arbre commun de manoeuvre 40. Cet arbre 40 est mis en mouvement par la commande de l'invention, visible plus en détail dans la figure 2.In FIG. 1, the references 10, 20 and 30 respectively designate ceramic insulating columns supporting the breaking chambers of a three-pole circuit breaker. These chambers are operated by rods, respectively referenced 11, 21 and 31, connected by connecting rods 12, 22, 32 to a common operating shaft 40. This shaft 40 is set in motion by the control of the invention, visible more in detail in Figure 2.

La commande de l'invention comprend un moteur à courant continu 50, dont l'arbre 51 est coaxial à l'arbre 40 précité et solidaire de celui-ci. Sur l'arbre 51 est calé un bras 52 à une extrémité de laquelle est fixée une première extrémité d'un ressort 53 dont l'autre extrémité est attachée à un point fixe 54.The control of the invention comprises a DC motor 50, the shaft 51 of which is coaxial with the aforementioned shaft 40 and integral with the latter. On the shaft 51 is wedged an arm 52 at one end of which is fixed a first end of a spring 53 the other end of which is attached to a fixed point 54.

Le bras peut prendre une première position, dans laquelle le ressort 53 est bandé, et correspondant à une position enclenchée du disjoncteur. Le bras est maintenu dans cette première position par une butée 55 escamotable, par exemple au moyen d'un électro-aimant 56 commandé par un circuit électronique programmé 57. Le circuit électronique est alimenté par un accumulateur électrique 58. Cet accumulateur alimente également, à travers le circuit électronique 57, le moteur à courant continu 50.The arm can take a first position, in which the spring 53 is banded, and corresponding to an engaged position of the circuit breaker. The arm is held in this first position by a retractable stop 55, for example by means of an electromagnet 56 controlled by a programmed electronic circuit 57. The electronic circuit is supplied by an electric accumulator 58. This accumulator also supplies, at through the electronic circuit 57, the DC motor 50.

Lorsque le disjoncteur doit être déclenché, un ordre provenant d'un relais non représenté est adressé au circuit électronique 57 qui alimente alors l'électro-aimant 56 et provoque ainsi l'effacement de la butée 55. Sous l'action du ressort qui se détend brusquement, le bras pivote selon la flèche F1 en traits pleins, ce qui provoque la rotation des arbres 51 et 40 et l'ouverture des pôles du disjoncteur. La course du bras est arrêtée par une butée fixe 59 faisant office d'amortisseur.When the circuit breaker must be tripped, an order from a relay (not shown) is sent to the electronic circuit 57 which then supplies the electromagnet 56 and thus causes the abutment 55 to be erased. Under the action of the spring which is suddenly relaxes, the arm pivots along arrow F1 in solid lines, which causes the shafts 51 and 40 to rotate and the poles of the circuit breaker to open. The stroke of the arm is stopped by a fixed stop 59 acting as a shock absorber.

Quand on veut effectuer une fermeture du disjoncteur, le circuit électronique alimente le moteur 50 qui entraîne en rotation l'arbre 51 et le bras 53 dans le sens de la flèche F2 en traits interrompus. Cette opération provoque le réarmement du ressort 53 et la refermeture du disjoncteur. Un moteur à courant continu, par exemple à excitation série, a un fort couple au démarrage de sorte qu'il est possible de réarmer le ressort et de refermer le disjoncteur dans un temps compatible avec celui fixé par les cycles OFO normalisés. Le circuit électronique est programmé pour alimenter le moteur électrique pendant le temps juste nécessaire à la refermeture du disjoncteur et au réarmement du ressort et pour amortir le mouvement en fin de course. Si une deuxième ouverture est demandée, elle se déroulera comme la première.When it is desired to close the circuit breaker, the electronic circuit supplies the motor 50 which rotates the shaft 51 and the arm 53 in the direction of the arrow F2 in broken lines. This operation causes the spring 53 to be reset and the circuit breaker to close again. A direct current motor, for example with series excitation, has a high starting torque so that it is possible to reset the spring and close the circuit breaker in a time compatible with that fixed by the standardized OFO cycles. The electronic circuit is programmed to supply the electric motor for the time just necessary to close the circuit breaker and reset the spring and to dampen movement at the end of the stroke. If a second opening is requested, it will proceed as the first.

La mise en oeuvre de l'invention nécessite l'emploi d'une batterie d'accumulateurs de 24 ou 48 volts, d'une capacité que l'homme du métier saura calculer en fonction du type de disjoncteur à commander et de la nature des cycles à effectuer.The implementation of the invention requires the use of a 24 or 48 volt accumulator battery, of a capacity that a person skilled in the art will be able to calculate according to the type of circuit breaker to be controlled and the nature of the cycles to be performed.

La commande de l'invention comporte un nombre réduit de pièces mécaniques et par suite, un prix de revient modéré et un coût d'entretien faible.The order of the invention comprises a reduced number of mechanical parts and consequently, a moderate cost price and a low maintenance cost.

Claims (1)

  1. Control apparatus for a medium tension or a high tension circuit breaker having a plurality of poles each provided with a drive rod, the control apparatus comprising a motor (50) and a shaft (40) driven by the motor (50) and controlling the motion of the drive rods of said poles, said shaft being fixed by a central portion to an arm (52) having a first end fixed to a first end of a disengagement spring (53) whose opposite end is fixed to a fixed point, said shaft (40) being capable of taking up a first position in which the spring stores energy and the poles of the circuit breaker are engaged, and a second position in which the spring is relaxed and the poles are disengaged, the second end of the arm cooperating with a displaceable abutment (55) capable of taking up a first position in which it holds the arm in said first position and a second position in which it releases the arm, the abutment being displaceable by means of an electromagnetic actuator (56), the control apparatus being characterized in that the shaft (40) controlling the motion of the drive rods is fixed to the shaft of the motor (50), and in that the motor (50) is a DC motor powered by a battery (58), the power supply to the motor and to the actuator being under the control of a programmed electronic circuit (5 7) to perform a given cycle of successive openings and closings of the circuit breaker.
EP91114835A 1990-09-10 1991-09-03 Operating device for circuit breaker Expired - Lifetime EP0475247B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9011179A FR2666684B1 (en) 1990-09-10 1990-09-10 CIRCUIT BREAKER CONTROL.
FR9011179 1990-09-10

Publications (2)

Publication Number Publication Date
EP0475247A1 EP0475247A1 (en) 1992-03-18
EP0475247B1 true EP0475247B1 (en) 1995-06-28

Family

ID=9400196

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91114835A Expired - Lifetime EP0475247B1 (en) 1990-09-10 1991-09-03 Operating device for circuit breaker

Country Status (7)

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US (1) US5151567A (en)
EP (1) EP0475247B1 (en)
AT (1) ATE124567T1 (en)
DE (1) DE69110805T2 (en)
DK (1) DK0475247T3 (en)
ES (1) ES2073629T3 (en)
FR (1) FR2666684B1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1301872B1 (en) * 1998-07-24 2000-07-07 Abb Adda S P A COMMAND AND CONTROL DEVICE FOR HIGH AND MEDIUM VOLTAGE SWITCHES
US7151353B2 (en) 2000-09-18 2006-12-19 Abb Ab Switching device
JP3861832B2 (en) * 2003-03-11 2006-12-27 株式会社日立製作所 Switch
ATE365970T1 (en) 2003-09-13 2007-07-15 Abb Technology Ag DEVICE FOR ACTUATING AN ELECTRICAL SWITCHING DEVICE
FR2865572B1 (en) * 2004-01-23 2006-05-26 Alstom T & D Sa DEVICE FOR CONTROLLING A DEVICE FOR CUTTING ELECTRIC ENERGY
US7211750B2 (en) * 2004-12-22 2007-05-01 Square D Company Switching mechanism with shock absorber
EP1744338B1 (en) * 2005-07-13 2010-03-31 Siemens Aktiengesellschaft Drive mechanism and method for opening/closing of electric switchgear
FR2895140B1 (en) * 2005-12-20 2008-01-18 Areva T & D Sa DEVICE FOR CONTROLLING AN ELECTRICAL EQUIPMENT
US10242824B2 (en) * 2013-06-17 2019-03-26 Thomas & Betts International Llc Lockout device for switchgear
DE102016208274A1 (en) * 2016-05-13 2017-11-16 Siemens Aktiengesellschaft Coupling element for an electrical switching device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966573C (en) * 1950-08-08 1957-08-22 Voigt & Haeffner Ag Compressed air drive for electrical circuit breakers
FR2589001A1 (en) * 1985-10-23 1987-04-24 Alsthom DEVICE FOR MANEUVERING A CIRCUIT BREAKER AND CIRCUIT BREAKER PROVIDED WITH SAID DEVICE
FR2640424A1 (en) * 1988-12-09 1990-06-15 Alsthom Gec CIRCUIT BREAKER CONTROL

Also Published As

Publication number Publication date
DE69110805D1 (en) 1995-08-03
DE69110805T2 (en) 1995-11-16
FR2666684B1 (en) 1996-08-23
DK0475247T3 (en) 1995-10-02
ES2073629T3 (en) 1995-08-16
ATE124567T1 (en) 1995-07-15
FR2666684A1 (en) 1992-03-13
EP0475247A1 (en) 1992-03-18
US5151567A (en) 1992-09-29

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