EP0570265A1 - Earthing switch with perpendicular contact opening - Google Patents

Earthing switch with perpendicular contact opening Download PDF

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Publication number
EP0570265A1
EP0570265A1 EP93401184A EP93401184A EP0570265A1 EP 0570265 A1 EP0570265 A1 EP 0570265A1 EP 93401184 A EP93401184 A EP 93401184A EP 93401184 A EP93401184 A EP 93401184A EP 0570265 A1 EP0570265 A1 EP 0570265A1
Authority
EP
European Patent Office
Prior art keywords
arm
whip
horns
disconnector
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.)
Granted
Application number
EP93401184A
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German (de)
French (fr)
Other versions
EP0570265B1 (en
Inventor
Daniel Demissy
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.)
Grid Canada Solutions Inc
Original Assignee
GEC Alsthom Energie Inc
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 Energie Inc filed Critical GEC Alsthom Energie Inc
Publication of EP0570265A1 publication Critical patent/EP0570265A1/en
Application granted granted Critical
Publication of EP0570265B1 publication Critical patent/EP0570265B1/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
    • 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
    • H01H33/121—Load break switches
    • H01H33/123—Load break switches in which the auxiliary contact pivots on the main contact-arm and performs a delayed and accelerated movement
    • H01H33/124—Load break switches in which the auxiliary contact pivots on the main contact-arm and performs a delayed and accelerated movement the auxiliary contact being a whip contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
    • H01H31/283—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact wherein the contact or contacts are rectilinearly movable with respect to the carrying member

Definitions

  • the present invention relates to a perpendicular opening earthing switch provided with a mechanism allowing an abrupt breaking of the residual current during an opening operation.
  • An object of the present invention is to define a disconnector provided with a breaking mechanism to give it a certain breaking capacity.
  • Another object of the invention is to provide a disconnector capable, during its operation both at opening and at closing, of breaking the ice which may have formed on its contacts.
  • Another object of the invention is to provide a disconnector provided with a robust mechanism allowing a large number of cuts, with safe and repetitive operation, and of economical implementation.
  • An object of the invention is to provide a whip disconnector operating safely, even when the disconnector is covered with ice.
  • the invention relates to an earthing switch with perpendicular opening, comprising a female contact disposed at the end of a metal support connected to a socket and fixed to the top of an insulating column and a male contact disposed at the end of an operating arm actuated by an operating mechanism, said arm being connected to earth, the operating mechanism allowing, during '' a switch opening operation, first a translational movement of the arm along its axis, then a rotary movement of amplitude close to 90 degrees of angle, characterized in that it comprises two metal horns , fixed to said support and in electrical connection with it, said horns being parallel and arranged so as to enclose, when the disconnector is in the closed position, the end of the arm in the vicinity of the male contact, and a flexible metal rod called a whip, fixed by one end at a point on the arm and extending, when the disconnector is in the closed position, along said arm, said whip being subject to sliding, when the arm performs an opening movement, the along a fixed point of a guide
  • the fixed guide piece is a metal rod fixed to said support and arranged perpendicular to said arm when the disconnector is in the closed position, said rod being provided with a barb, said fixed point being at the junction between said rod and said barb.
  • FIGS. 1 to 4 illustrate an earthing switch of the perpendicular opening type, shown in the closed position, and comprising an insulating column placed 1 at the top of a metal frame 2 and carrying a female contact 3 to the end of a support 4 placed at the top of the insulating column.
  • Support 4 metallic, carries a socket 5.
  • the reference 6 designates a male contact, placed at the end of an operating arm 7, moved by means of a mechanism 8 driven by a motor enclosed in a housing 9 and by a motion transmission shaft 10.
  • the female contact 3 is of the tulip type, that is to say comprising a plurality of parallel fingers arranged on a cylindrical surface; the female contact is fixed to the support by a bolted plate 12; the male contact 6 comprises at its end intended to come to cooperate with the female contact, a bulged part 6A, ensuring good contact pressure.
  • the other end of the arm 7 is connected to the frame at ground potential by a metal braid 11.
  • the disconnector operating mechanism provides the arm 7, during an opening operation, first with a vertical movement allowing the separation of the male and female contacts, then with a rotational movement in a vertical plane, until the arm reaches a horizontal position, as shown in dotted lines in Figure 1.
  • the disconnector carries two metal horns 12 and 13, fixed to the support 4 by a bolt 15, and extending parallel and horizontally.
  • the spacing of the horns is such that they enclose the male contact with sufficient pressure to ensure the passage of current, as will be seen below.
  • the horns are curved at their ends to facilitate the engagement of the male contact during a closing operation of the disconnector.
  • a flexible metal rod 16 called a whip
  • This whip is guided by a guide piece 17, fixed to the support 4, and consisting of a metal rod arranged perpendicular to the arm 7 when the disconnector is in the closed position; the rod 17 has a portion 17A inclined upwards and is provided with a pin 17B.
  • the whip is fixed to the arm 7 by a bolt 18 which also carries a part 19 limiting the inclination of the whip 16 relative to the arm 7.
  • the bolt 18 provides electrical contact between the arm 7 and the whip 16.
  • the guide piece forces the whip to slide along a fixed point, at the junction between the guide piece and the barb, during an opening operation of the disconnector, which leads to an increasing flexion of the whip.
  • the operation of the disconnector is as follows:
  • the male contact 6 moves away from the female contact, the arm 7 performing a rotational movement ( Figure 6).
  • the current is shared between the horns 13 and 14 on the one hand and the whip 16 on the other hand; the latter is in good electrical contact with the part 17, thanks to the pressure exerted by the curvature of the whip; the barb 17B guides the whip which slides inside the barb 17B.
  • the current is switched on the horns; during this phase, the whip bends; when the current is switched, first partially, then completely, on the whip, the contact pressure between the whip and the support piece 17 is high: this contributes to significantly reducing the electrical wear of the whip and ensures in this way an increase in the number of cuts permitted before the replacement of the whip and the support piece.
  • the horns 13 and 14 constitute a clamp which exerts sufficient pressure on the arm 7 to break any ice which may have formed and this, both at the opening and at the closing.
  • clamp 13,14 keeps the arm 17 well centered both during an opening maneuver and during a closing maneuver.
  • the invention applies to high voltage earthing switches with perpendicular opening, whether these are vertical, as described above, or horizontal.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Keying Circuit Devices (AREA)
  • Slide Switches (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

Perpendicular-opening earthing isolator comprising a female contact (3) and a male contact (6) which is arranged at the end of an operating arm (7), characterised in that it comprises two parallel metal horns (13, 14) arranged so as to grip, when the isolator is in the closed position, the end of the arm in the vicinity of the male contact, and a flexible metal rod (16) termed a whip, constrained to slide, when the arm effects an opening movement, over a fixed point of a guide piece (17), the respective lengths of the horns (13, 14) and of the whip (16) being chosen such that, during opening, the current switches firstly onto the horns, and then onto the whip. <IMAGE>

Description

La présente invention concerne un sectionneur de terre à ouverture perpendiculaire doté d'un mécanisme permettant une rupture brusque du courant résiduel lors d'une opération d'ouverture.The present invention relates to a perpendicular opening earthing switch provided with a mechanism allowing an abrupt breaking of the residual current during an opening operation.

On sait que les sectionneurs de terre à haute tension doivent être doués d'un certain pouvoir de coupure pour permettre la coupure des courants inductifs et capacitifs induits par la proximité d'une autre ligne parallèle sous charge.It is known that high voltage earthing switches must be provided with a certain breaking capacity to allow the breaking of the inductive and capacitive currents induced by the proximity of another parallel line under load.

Un but de la présente invention est de définir un sectionneur doté d'un mécanisme de rupture pour lui conférer un certain pouvoir de coupure.An object of the present invention is to define a disconnector provided with a breaking mechanism to give it a certain breaking capacity.

Un autre but de l'invention est de réaliser un sectionneur capable, lors de son fonctionnement aussi bien à l'ouverture qu'à la fermeture, de briser la glace qui a pu se former sur ses contacts.Another object of the invention is to provide a disconnector capable, during its operation both at opening and at closing, of breaking the ice which may have formed on its contacts.

Un autre but de l'invention est de réaliser un sectionneur muni d'un mécanisme robuste autorisant un grand nombre de coupure, avec un fonctionnement sûr et répétitif, et de réalisation économique.Another object of the invention is to provide a disconnector provided with a robust mechanism allowing a large number of cuts, with safe and repetitive operation, and of economical implementation.

L'art antérieur le plus proche est constitué par le document DE-A-1964363, qui décrit un sectionneur muni d'un contact d'arc constitué par un fouet; la mise en oeuvre de ce fouet nécessite un mécanisme complexe comprenant plusieurs pièces mobiles, ainsi qu'un frein pour pour freiner le mouvement du fouet en fin de manoeuvre d'ouverture. Un tel mécanisme complexe est onéreux, d'entretien coûteux, et ne peut fonctionner lorsque le sectionneur est recouvert de glace.The closest prior art consists of document DE-A-1964363, which describes a disconnector provided with an arcing contact constituted by a whip; the implementation of this whip requires a complex mechanism comprising several moving parts, as well as a brake for braking the movement of the whip at the end of the opening operation. Such a complex mechanism is expensive, costly to maintain, and cannot operate when the disconnector is covered with ice.

Un but de l'invention est de réaliser un sectionneur à fouet fonctionnant avec sécurité, même lorsque le sectionneur est recouvert de glace.An object of the invention is to provide a whip disconnector operating safely, even when the disconnector is covered with ice.

L'invention a pour objet un sectionneur de terre à ouveture perpendiculaire, comprenant un contact femelle disposé à l'extrémité d'un support métallique relié à une prise de courant et fixé au sommet d'une colonne isolante et un contact mâle disposé à l'extrémité d'un bras de manoeuvre actionné par un mécanisme de manoeuvre, ledit bras étant relié à la terre, le mécanisme de manoeuvre permettant, lors d'une manoeuvre d'ouverture du sectionneur, d'abord un mouvement de translation du bras le long de son axe, puis un mouvement de rotation d'amplitude voisine de 90 degrés d'angle, caractérisé en ce qu'il comprend deux cornes métalliques, fixées audit support et en liaison électrique avec lui, lesdites cornes étant parallèles et disposées de manière à enserrer, lorsque le sectionneur est en position fermée, l'extrémité du bras au voisinage du contact mâle, et une tige métallique souple appelée fouet, fixée par une extrémité à un point du bras et s'étendant, lorsque le sectionneur est en position fermée, le long dudit bras, ledit fouet étant assujetti à glisser , lorsque le bras effectue un mouvement d'ouverture, le long d'un point fixe d'une pièce de guidage, les longueurs respectives des cornes et du fouet étant choisies de manière que, lors d'une opération d'ouverture, le courant commute, après séparation des contacts mâle et femelle , d'abord sur les cornes, puis sur le fouet, de sorte que celui-ci à une courbure assurant un bon contact électrique lorsque le bras quitte les cornes.The invention relates to an earthing switch with perpendicular opening, comprising a female contact disposed at the end of a metal support connected to a socket and fixed to the top of an insulating column and a male contact disposed at the end of an operating arm actuated by an operating mechanism, said arm being connected to earth, the operating mechanism allowing, during '' a switch opening operation, first a translational movement of the arm along its axis, then a rotary movement of amplitude close to 90 degrees of angle, characterized in that it comprises two metal horns , fixed to said support and in electrical connection with it, said horns being parallel and arranged so as to enclose, when the disconnector is in the closed position, the end of the arm in the vicinity of the male contact, and a flexible metal rod called a whip, fixed by one end at a point on the arm and extending, when the disconnector is in the closed position, along said arm, said whip being subject to sliding, when the arm performs an opening movement, the along a fixed point of a guide piece, the respective lengths of the horns and of the whip being chosen so that, during an opening operation, the current switches, after separation of the male and female contacts, from first on the horns, then on the whip, so that it has a curvature ensuring good electrical contact when the arm leaves the horns.

Avantageusement, la pièce de guidage fixée est une tige métallique fixée audit support et disposée perpendiculairement audit bras lorsque le sectionneur est en position fermée, ladite tige étant munie d'un ardillon, ledit point fixe étant à la jonction entre ladite tige et ledit ardillon.Advantageously, the fixed guide piece is a metal rod fixed to said support and arranged perpendicular to said arm when the disconnector is in the closed position, said rod being provided with a barb, said fixed point being at the junction between said rod and said barb.

L'invention est expliquée en détail par la description d'un exemple de mise en oeuvre, en référence au dessin annexé dans laquel:

  • la figure 1 est une vue en élévation d'un sectionneur de terre à ouverture perpendiculaire,
  • la figure 2 est une vue en élévation et en coupe partielle de la partie supérieure du sectionneur de terre, représenté en posistion enclenchée,
  • la figure 3 est une vue de dessus du sectionneur lorsqu'il est dans la position de la figure 2,
  • la figure 4 est une vue partielle en coupe selon la ligne IV-IV de la figure 2,
  • la figure 5 est une agrandie d'une partie de la figure 2,
  • la figure 6 est une vue en élévation partiellement en coupe de la partie supérieure du sectionneur, représenté au début d'une opération d'ouverture,
  • la figure 7 est une vue de dessus du sectionneur dans la position de la figure 6,
  • la figure 8 est une vue en coupe selon la ligne VIII-VIII de la figure 6,
  • la figure 9 est une vue agrandie d'une partie de la figure 6,
  • la figure 10 est une vue en élévation de la partie supérieure du sectionneur précédent, à environ la moitié de la phase d'ouverture,
  • la figure 11 est une vue de dessus du sectionneur dans la position de la figure 10,
  • la figure 12 est une en coupe selon la ligne XII-XII de la figure 10,
  • la figure 13 est une vue agrandie d'une partie de la figure 10.
The invention is explained in detail by the description of an exemplary implementation, with reference to the attached drawing in which:
  • FIG. 1 is an elevation view of an earthing switch with perpendicular opening,
  • FIG. 2 is a view in elevation and in partial section of the upper part of the earthing switch, shown in the engaged position,
  • FIG. 3 is a top view of the disconnector when it is in the position of FIG. 2,
  • FIG. 4 is a partial sectional view along the line IV-IV of FIG. 2,
  • FIG. 5 is an enlarged view of part of FIG. 2,
  • FIG. 6 is an elevational view partially in section of the upper part of the disconnector, shown at the start of an opening operation,
  • FIG. 7 is a top view of the disconnector in the position of FIG. 6,
  • FIG. 8 is a sectional view along line VIII-VIII of FIG. 6,
  • FIG. 9 is an enlarged view of part of FIG. 6,
  • FIG. 10 is an elevation view of the upper part of the previous disconnector, about halfway through the opening phase,
  • FIG. 11 is a top view of the disconnector in the position of FIG. 10,
  • FIG. 12 is a section along line XII-XII of FIG. 10,
  • FIG. 13 is an enlarged view of part of FIG. 10.

On se référera aux figures 1 à 4 qui illustrent un sectionneur de mise à la terre de type à ouverture perpendiculaire, représenté en position fermée, et comprenant une colonne isolante placée 1 au sommet d'un bâti métallique 2 et portant un contact femelle 3 à l'extrémité d'un support 4 placé au sommet de la colonne isolante. Le support 4, métallique, porte une prise de courant 5.Reference is made to FIGS. 1 to 4 which illustrate an earthing switch of the perpendicular opening type, shown in the closed position, and comprising an insulating column placed 1 at the top of a metal frame 2 and carrying a female contact 3 to the end of a support 4 placed at the top of the insulating column. Support 4, metallic, carries a socket 5.

La référence 6 désigne un contact mâle, placé à l'extrémité d'un bras de manoeuvre 7, déplacé au moyen d'un mécanisme 8 entraîné par un moteur enfermé dans un boîtier 9 et par un arbre de transmission de mouvement 10.The reference 6 designates a male contact, placed at the end of an operating arm 7, moved by means of a mechanism 8 driven by a motor enclosed in a housing 9 and by a motion transmission shaft 10.

Le contact femelle 3 est du type tulipe, c'est-à-dire comprenant une pluralité de doigts parallèles disposés selon une surface cylindrique; le contact femelle est fixé au support par une plaque boulonnée 12; le contact mâle 6 comporte à son extrémité destinée à venir coopérer avec le contact femelle, une partie renflée 6A, assurant un bonne pression de contact. L'autre extrémité du bras 7 est reliée au bâti au potentiel de la terre par une tresse métallique 11.The female contact 3 is of the tulip type, that is to say comprising a plurality of parallel fingers arranged on a cylindrical surface; the female contact is fixed to the support by a bolted plate 12; the male contact 6 comprises at its end intended to come to cooperate with the female contact, a bulged part 6A, ensuring good contact pressure. The other end of the arm 7 is connected to the frame at ground potential by a metal braid 11.

Le mécanisme de manoeuvre du sectionneur assure au bras 7, lors d'une manoeuvre d'ouverture, d'abord un mouvement vertical permettant la séparation des contacts mâle et femelle, puis un mouvement de rotation dans un plan vertical, jusqu'à ce que le bras atteigne une position horizontale, comme figuré en pointillés dans la figure 1.The disconnector operating mechanism provides the arm 7, during an opening operation, first with a vertical movement allowing the separation of the male and female contacts, then with a rotational movement in a vertical plane, until the arm reaches a horizontal position, as shown in dotted lines in Figure 1.

Comme le montrent les figures 2 à 5, le sectionneur porte deux cornes métalliques 12 et 13, fixées au support 4 par un boulon 15, et s'étendant parallèlement et horizontalement. L'écartement des cornes est tel qu'elles enserrent le contact mâle avec une pression suffisante pour assurer le passage du courant, comme on le verra plus loin. Les cornes sont courbées à leur extrémité pour faciliter l'engagement du contact mâle lors d'une opération de fermeture du sectionneur.As shown in Figures 2 to 5, the disconnector carries two metal horns 12 and 13, fixed to the support 4 by a bolt 15, and extending parallel and horizontally. The spacing of the horns is such that they enclose the male contact with sufficient pressure to ensure the passage of current, as will be seen below. The horns are curved at their ends to facilitate the engagement of the male contact during a closing operation of the disconnector.

Au bras 7 est fixé une tige métallique souple 16, appelée fouet, s'étendant, lorsque le sectionneur est en position fermée, le long du bras 7; sa longueur est telle qu'il dépasse le support 4. Ce fouet est guidé par une pièce de guidage 17, fixée au support 4, et constituée d'une tige métallique disposée perpendiculairement au bras 7 lorsque le sectionneur est en position fermée; la tige 17 présente une portion 17A inclinée vers le haut et est munie d'un ardillon 17B. Le fouet est fixé au bras 7 par un boulon 18 qui porte également une pièce 19 limitant l'inclinaison du fouet 16 par rapport au bras 7. Le boulon 18 assure le contact électrique entre le bras 7 et le fouet 16. La pièce de guidage oblige le fouet à glisser le long d'un point fixe, à la jonction entre la pièce de guidage et l'ardillon, au cours d'une manoeuvre d'ouverture du sectionneur, ce qui entraîne une flexion de plus en plus importante du fouet.To the arm 7 is fixed a flexible metal rod 16, called a whip, extending, when the disconnector is in the closed position, along the arm 7; its length is such that it exceeds the support 4. This whip is guided by a guide piece 17, fixed to the support 4, and consisting of a metal rod arranged perpendicular to the arm 7 when the disconnector is in the closed position; the rod 17 has a portion 17A inclined upwards and is provided with a pin 17B. The whip is fixed to the arm 7 by a bolt 18 which also carries a part 19 limiting the inclination of the whip 16 relative to the arm 7. The bolt 18 provides electrical contact between the arm 7 and the whip 16. The guide piece forces the whip to slide along a fixed point, at the junction between the guide piece and the barb, during an opening operation of the disconnector, which leads to an increasing flexion of the whip.

Le fonctionnement du sectionneur est le suivant:The operation of the disconnector is as follows:

OUVERTURE DU SECTIONNEUROPENING THE DISCONNECTOR

Avant l'ouverture (figure 2) le contact mâle 6 est en contact par sa partie renflée avec les doigts de contact 3. Le courant passe dans la prise 5, le support 4, les doigts 3, le contact mâle 6, le bras 7, la tresse 11, le bâti 2 et la terre.Before opening (Figure 2) the male contact 6 is in contact by its bulged part with the contact fingers 3. The current passes through the socket 5, the support 4, the fingers 3, the male contact 6, the arm 7 , braid 11, frame 2 and earth.

A l'ouverture, le contact mâle quitte progressivement les doigts de contact 3, le courant est progressivement commuté sur les cornes 13 et 14 (Fig. 5). Le fouet reste le long du bras 7.On opening, the male contact gradually leaves the contact fingers 3, the current is gradually switched over the horns 13 and 14 (Fig. 5). The whip remains along the arm 7.

Après avoir quitté les doigts 3, le contact mâle 6 s'écarte du contact femelle, le bras 7 effectuant un mouvement de rotation (Figure 6). Le courant se partage entre les cornes 13 et 14 d'une part et le fouet 16 d'autre part; ce dernier est en bon contact électrique avec la pièce 17, grâce à la pression exercée par la courbure du fouet; l'ardillon 17B guide le fouet qui glisse à l'intérieur de l'ardillon 17B.After leaving the fingers 3, the male contact 6 moves away from the female contact, the arm 7 performing a rotational movement (Figure 6). The current is shared between the horns 13 and 14 on the one hand and the whip 16 on the other hand; the latter is in good electrical contact with the part 17, thanks to the pressure exerted by the curvature of the whip; the barb 17B guides the whip which slides inside the barb 17B.

Lorsque le contact mâle quitte les cornes 13 et 14, le courant est entièrement commuté dans le fouet dont la courbure s'accentue de plus en plus( Fig.10 et 13). En fin de course du bras 7, la distance entre le contact mâle et le contact femelle étant maximale et assurant l'impossibilité de réamorçage, le fouet échappe à l'ardillon 17B; en raison de son élasticité, le fouet effectue un mouvement brusque qui le ramène vers le bras 7; le courant est coupé et aucun risque de réamorçage n'est à craindre puisque la distance d'isolement est atteinte.When the male contact leaves the horns 13 and 14, the current is completely switched in the whip whose curvature is becoming more and more accentuated (Fig. 10 and 13). At the end of the travel of the arm 7, the distance between the male contact and the female contact being maximum and ensuring the impossibility of re-ignition, the whip escapes the barb 17B; due to its elasticity, the whip makes an abrupt movement which brings it back towards the arm 7; the current is cut and no risk of re-ignition is to be feared since the isolation distance is reached.

On note qu'au début de la manoeuvre d'ouverture, le courant est commuté sur les cornes; pendant cette phase, le fouet se plie; lorsque le courant est commuté, d'abord partiellement, puis totalement, sur le fouet, la pression de contact entre le fouet et la pièce d'appui 17 est forte: ceci contribue à réduire de manière importante l'usure électrique du fouet et assure de la sorte une augmentation du nombre de coupures permises avant le remplacement du fouet et de la pièce d'appui.Note that at the start of the opening maneuver, the current is switched on the horns; during this phase, the whip bends; when the current is switched, first partially, then completely, on the whip, the contact pressure between the whip and the support piece 17 is high: this contributes to significantly reducing the electrical wear of the whip and ensures in this way an increase in the number of cuts permitted before the replacement of the whip and the support piece.

FERMETURE DU SECTIONNEURCLOSING OF THE DISCONNECTOR

Les mêmes mouvement s'effectuent, en sens inverse; le contact mâle retrouve d'abord sa place entre les cornes 13 et 14 avant que le dernier mouvement ne vienne l'obliger à s'engager entre les doigts 3. Le fouet, qui reste collé au bras 7 pendant le mouvement de rotation, vient s'engager automatiquement dans l'ardillon 17B. L'écartement des cornes 13 et 14 facilite l'engagement du bras.The same movements take place in reverse; the male contact first finds its place between the horns 13 and 14 before the last movement comes to force it to engage between the fingers 3. The whip, which remains glued to the arm 7 during the rotational movement, comes automatically engage in the barb 17B. The spacing of the horns 13 and 14 facilitates the engagement of the arm.

On note qu'au début d'une manoeuvre d'ouverture du sectionneur, le courant, qui passait par les contacts principaux 3 et 6, commute sur le bras 7 et les cornes 13 et 14. Pendant cette manoeuvre, le fouet se plie, comme le montre la figure 6, et est donc en tension avant la séparation; le contact 6 est très éloigné des cornes 13 et 14 lorsque le fouet quitte la tige 17; on voit donc que le fouet joue son rôle de protection des parties actives du sectionneur vis-à-vis des effets de brûlage de l'arc. La forte pression qui s'exerce entre le fouet 16 et la tige 17 permet de briser la glace qui aurait pu se former avant la manoeuvre d'ouverture, et assurer ainsi une parfaite commutation du courant sur le fouet.It is noted that at the start of an opening operation of the disconnector, the current, which passed through the main contacts 3 and 6, switches on the arm 7 and the horns 13 and 14. During this operation, the whip bends, as shown in Figure 6, and is therefore under tension before separation; the contact 6 is very far from the horns 13 and 14 when the whip leaves the rod 17; it can therefore be seen that the whip plays its role in protecting the active parts of the disconnector from the burning effects of the arc. The high pressure exerted between the whip 16 and the rod 17 makes it possible to break the ice which could have formed before the opening maneuver, and thus ensure perfect switching of the current on the whip.

Par ailleurs, les cornes 13 et 14 constituent une pince qui exerce une pression suffisante sur le bras 7 pour briser toute glace qui aurait pu se former et ceci, aussi bien à l'ouverture qu'à la fermeture.Furthermore, the horns 13 and 14 constitute a clamp which exerts sufficient pressure on the arm 7 to break any ice which may have formed and this, both at the opening and at the closing.

En outre la pince 13,14 permet de garder le bras 17 bien centré aussi bien pendant une manoeuvre d'ouverture que pendant une manoeuvre de fermeture.In addition, the clamp 13,14 keeps the arm 17 well centered both during an opening maneuver and during a closing maneuver.

L'invention s'applique aux sectionneurs de terre à haute tension à ouverture perpendiculaire, que ceux-ci soient verticaux, comme décrit précédemment, ou horizontaux.The invention applies to high voltage earthing switches with perpendicular opening, whether these are vertical, as described above, or horizontal.

Claims (2)

1/Sectionneur de terre à ouveture perpendiculaire, comprenant un contact femelle (3) disposé à l'extrémité d'un support métallique (4) relié à une prise de courant (5) et fixé au sommet d'une colonne isolante (1) et un contact mâle (6) disposé à l'extrémité d'un bras de manoeuvre (7) actionné par un mécanisme de manoeuvre (8), ledit bras étant relié à la terre, le mécanisme de manoeuvre permettant, lors d'une manoeuvre d'ouverture du sectionneur, d'abord un mouvement de translation du bras le long de son axe, puis un mouvement de rotation d'amplitude voisine de 90 degrés d'angle, caractérisé en ce qu'il comprend deux cornes métalliques (13, 14), fixées audit support et en liaison électrique avec lui, lesdites cornes étant parallèles et disposées de manière à enserrer, lorsque le sectionneur est en position fermée, l'extrémité du bras au voisinage du contact mâle, et une tige métallique souple (16) appelée fouet, fixée par une extrémité à un point (18) du bras (7) et s'étendant, lorsque le sectionneur est en position fermée, le long dudit bras, ledit fouet étant assujetti à glisser , lorsque le bras effectue un mouvement d'ouverture, le long d'un point fixe d'une pièce de guidage (17), les longueurs respectives des cornes (13, 14) et du fouet (16) étant choisies de manière que, lors d'une opération d'ouverture, le courant commute, après séparation des contacts mâle (6) et femelle (3), d'abord sur les cornes, puis sur le fouet, de sorte que celui-ci à une courbure assurant un bon contact électrique lorsque le bras quitte les cornes. 1 / Earthing switch with perpendicular opening, comprising a female contact (3) disposed at the end of a metal support (4) connected to a socket (5) and fixed to the top of an insulating column (1) and a male contact (6) disposed at the end of an operating arm (7) actuated by an operating mechanism (8), said arm being connected to the ground, the operating mechanism allowing, during an operation opening the disconnector, first a translational movement of the arm along its axis, then a rotational movement of amplitude close to 90 degrees of angle, characterized in that it comprises two metal horns (13, 14), fixed to said support and in electrical connection with it, said horns being parallel and arranged so as to enclose, when the disconnector is in the closed position, the end of the arm in the vicinity of the male contact, and a flexible metal rod (16 ) called a whip, fixed at one end to a poi nt (18) of the arm (7) and extending, when the disconnector is in the closed position, along said arm, said whip being subject to sliding, when the arm performs an opening movement, along a point fixed with a guide piece (17), the respective lengths of the horns (13, 14) and the whip (16) being chosen so that, during an opening operation, the current switches, after separation of the contacts male (6) and female (3), first on the horns, then on the whip, so that it has a curvature ensuring good electrical contact when the arm leaves the horns. 2/Sectionneur selon la revendication 1, caractérisée en ce que la pièce de guidage fixée est une tige métallique (17) fixée audit support et disposée perpendiculairement audit bras lorsque le sectionneur est en position fermée, ladite tige (17) étant munie d'un ardillon (17B), ledit point fixe étant à la jonction entre ladite tige (17) et ledit ardillon (17B). 2 / disconnector according to claim 1, characterized in that the fixed guide piece is a metal rod (17) fixed to said support and arranged perpendicular to said arm when the disconnector is in the closed position, said rod (17) being provided with a barb (17B), said fixed point being at the junction between said rod (17) and said barb (17B).
EP93401184A 1992-05-11 1993-05-07 Earthing switch with perpendicular contact opening Expired - Lifetime EP0570265B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9205689A FR2691008A1 (en) 1992-05-11 1992-05-11 Earthing switch with perpendicular opening.
FR9205689 1992-05-11

Publications (2)

Publication Number Publication Date
EP0570265A1 true EP0570265A1 (en) 1993-11-18
EP0570265B1 EP0570265B1 (en) 1998-01-14

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ID=9429666

Family Applications (1)

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EP93401184A Expired - Lifetime EP0570265B1 (en) 1992-05-11 1993-05-07 Earthing switch with perpendicular contact opening

Country Status (8)

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US (1) US5369234A (en)
EP (1) EP0570265B1 (en)
AT (1) ATE162336T1 (en)
CA (1) CA2095896C (en)
DE (1) DE69316265T2 (en)
DK (1) DK0570265T3 (en)
ES (1) ES2111722T3 (en)
FR (1) FR2691008A1 (en)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
EP2400518A1 (en) * 2010-06-28 2011-12-28 RWE Rheinland Westfalen Netz AG Method for adjusting contact forces in high voltage switching devices
CN105374613A (en) * 2015-12-15 2016-03-02 国网山东莱阳市供电公司 Smooth-switching isolating switch
CN107170632A (en) * 2016-03-08 2017-09-15 湖南长高高压开关有限公司 Major loop extra-high-voltage earthing switch with opening and closing induction current in parallel with arc-chutes

Families Citing this family (11)

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Publication number Priority date Publication date Assignee Title
US6392181B1 (en) * 2000-11-02 2002-05-21 Cleaveland/Price Inc. ARC extinguishing device with a high speed whip
US7078642B2 (en) 2003-01-14 2006-07-18 Cleaveland/Price Inc. Arc extinguishing device with a high speed whip
US6762385B1 (en) 2003-01-14 2004-07-13 Cleaveland/Price Inc. Arc extinguishing device with a high speed whip
US6753492B1 (en) * 2003-05-08 2004-06-22 Cleaveland/Price Inc. Arc extinguishing device with a metal matrix composite high speed whip
CA2496250C (en) * 2005-02-08 2014-06-17 General Electric Canada Disconnect switch
CN102360981A (en) * 2011-10-26 2012-02-22 沙河市供电公司 Isolating switch
JP6340153B2 (en) * 2014-09-19 2018-06-06 株式会社東光高岳 Electric operating device
CN109074972B (en) * 2016-04-20 2019-12-27 通用电器技术有限公司 HVDC disconnecting switch
CN209843594U (en) 2016-05-02 2019-12-24 豪倍公司 Circuit interrupting device and electrical switch
DE102018222848A1 (en) * 2018-12-21 2020-06-25 Siemens Aktiengesellschaft Earthing switch for a medium and / or high voltage circuit device and corresponding circuit device
US11810740B1 (en) * 2022-03-21 2023-11-07 Southern States, Llc Quick-set clevis joint for a three-phase electric disconnect switch linkage

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DE1964363A1 (en) * 1968-12-30 1970-07-02 Ind D Soule Ets Electrical switch disconnector
EP0120409A2 (en) * 1983-03-25 1984-10-03 BROWN, BOVERI & CIE Aktiengesellschaft Driving gear for operating a rotary disconnect switch
EP0198506A2 (en) * 1985-04-17 1986-10-22 Ruhrtal-Elektrizitätsgesellschaft Hartig GmbH &amp; Co. Air-break switchgear for high-tension circuits

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FR2675304B1 (en) * 1991-04-10 1994-04-08 Gec Alsthom Energie Inc SECTIONER WITH IMPROVED CUTTING POWER, PARTICULARLY SECTIONER WITH VERTICAL OPENING.

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Publication number Priority date Publication date Assignee Title
DE1964363A1 (en) * 1968-12-30 1970-07-02 Ind D Soule Ets Electrical switch disconnector
EP0120409A2 (en) * 1983-03-25 1984-10-03 BROWN, BOVERI & CIE Aktiengesellschaft Driving gear for operating a rotary disconnect switch
EP0198506A2 (en) * 1985-04-17 1986-10-22 Ruhrtal-Elektrizitätsgesellschaft Hartig GmbH &amp; Co. Air-break switchgear for high-tension circuits

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2400518A1 (en) * 2010-06-28 2011-12-28 RWE Rheinland Westfalen Netz AG Method for adjusting contact forces in high voltage switching devices
CN105374613A (en) * 2015-12-15 2016-03-02 国网山东莱阳市供电公司 Smooth-switching isolating switch
CN107170632A (en) * 2016-03-08 2017-09-15 湖南长高高压开关有限公司 Major loop extra-high-voltage earthing switch with opening and closing induction current in parallel with arc-chutes
CN107170632B (en) * 2016-03-08 2019-10-08 湖南长高高压开关有限公司 Major loop extra-high-voltage earthing switch with opening and closing induction current in parallel with arc-chutes

Also Published As

Publication number Publication date
FR2691008A1 (en) 1993-11-12
ES2111722T3 (en) 1998-03-16
CA2095896A1 (en) 1993-11-12
US5369234A (en) 1994-11-29
DE69316265D1 (en) 1998-02-19
DE69316265T2 (en) 1998-04-30
CA2095896C (en) 1996-10-01
EP0570265B1 (en) 1998-01-14
ATE162336T1 (en) 1998-01-15
DK0570265T3 (en) 1998-03-02
FR2691008B1 (en) 1997-02-07

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