EP1507274A1 - Earthing switch - Google Patents
Earthing switch Download PDFInfo
- Publication number
- EP1507274A1 EP1507274A1 EP04103896A EP04103896A EP1507274A1 EP 1507274 A1 EP1507274 A1 EP 1507274A1 EP 04103896 A EP04103896 A EP 04103896A EP 04103896 A EP04103896 A EP 04103896A EP 1507274 A1 EP1507274 A1 EP 1507274A1
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- EP
- European Patent Office
- Prior art keywords
- contact
- switching
- earth
- contacts
- disconnector
- 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
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/365—Bridging contacts
-
- 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
Definitions
- the present invention relates to a high or medium voltage earthing switch gas insulation comprising in an envelope, closed tightly to be filled with an insulating gas dielectrically, at least one conductive bar to which corresponds to a contact of earth, a contact of phase fixed to said bar and intended to be connected electrically in contact with the earth for setting earth of said bar.
- the invention applies especially at a so-called earthing switch high-speed earthing switch, this type of disconnector with a very short switching time low thanks to a spring drive which allows to avoid the formation of electric arcs.
- WO 96/17420 already known from three-phase earthing switch as defined above.
- the three bars conductors are bent radially in the envelope in such a way that their ends respective ones are arranged on the periphery of the path of a rotating conductive part connected to the Earth.
- the disadvantage of this construction is that it is complicated and expensive to perform. In addition to this construction is cumbersome because of the fact that busbars must be bent. Otherwise, with this construction it is not possible to individually measure the electrical resistance of each busbar.
- the object of the invention is to remedy disadvantages mentioned above by proposing a more compact and simple earthing switch mechanically and which also allows the measurement of the electrical resistance on each conductor bar when the earthing switch is closed.
- the subject of the invention is a high or medium voltage earthing switch gas insulation comprising in an envelope, closed tightly to be filled with an insulating gas dielectrically, at least one conductive bar to which corresponds to a contact of earth, a contact of phase fixed to said bar and intended to be connected electrically in contact with the earth for setting earth of said bar, characterized in that the contact of earth is mounted fixed in the envelope facing the phase contact by leaving a space with the latter free, in that a switching element is mounted in the envelope between the phase contact and the earth contact, this switching element comprising on the one hand, a switching contact that short-circuit the space left free between the contact of phase and ground contact to electrically connect earth contact and phase contact when the disconnector is closed and, on the other hand, less partly electrically insulating on which is fixed the switching contact so that the switching contact is electrically isolated from phase contact and earth contact in a open position of the disconnector.
- FIG. 1 there is shown non-limiting example an earthing switch three phase according to the invention with an element of rotary switching.
- the earthing switch includes, in a sealed envelope 5 to be filled with a dielectric gas such as SF6, three parallel conductor bars 1 arranged according to a equilateral triangle configuration, only two conductor bars 1 being shown in FIG.
- a ground contact 2 is disposed here in the axial extension of each conductor bar 1 facing a phase contact electrically connected to the bar corresponding driver.
- the earth contact and the phase contact are separated from one another space left free E, this space E being sufficient to ensure dielectric isolation.
- the earth contact and phase contact be slightly offset from the axis of the corresponding bar if for example the phase contact is mounted on a small paw attached to the bar and extending transversely to this one. In this case, the contact of earth and phase contact are still aligned with the axis of the corresponding conductive bar.
- each contact of earth is mounted through a lid 3 typically metallic attached to the envelope, and is isolated from the lid via a tube T insulation more visible in Figure 1A.
- the dimensions (in particular the wall thickness of the tube) are provided to hold the insulation between the earth contact and cover during an impulse voltage typically of the order of a few kilovolts affecting this earth contact.
- each earth contact 2 forms a socket earth 4 intended to be connected to the earth and which also used for the measurement of electrical resistance of the busbar associated with it when the disconnector is closed.
- the lid 3 which is usually made of the same material as the envelope, typically aluminum, tightly closed the envelope 5 of the disconnector, here an envelope tubular metal. As we can see in FIG. 1, the cover 3 is arranged at a end of the tubular casing 5, which facilitates maintenance operations of the earthing switch according to the invention.
- this lid is generally metallic and the potential of the earth as well as the envelope 5 of the disconnector, it can be used to evacuate currents from the three phases to the earth when closing the switch.
- this configuration it is no longer possible with this configuration to measure the electrical resistance of a conducting bar, in the closed position of the disconnector, by connecting a test device on the earth contact corresponding to this bar.
- the earthing switch described on the Figure 1 also includes in the envelope an element of switching 6 mobile in rotation in a plane crosswise to bars 1 and which is composed of a 7 rotating support around an R axis and three switching electrical contacts 8.
- Contacts 8 are preferably made of materials arc-resistant, such as copper covered with tungsten.
- the support 7 is a support less partly electrically insulating star with three branches, the contacts 8 being fixed at the ends of the branches of the support 7 so they are electrically insulated from earth contacts and live when the earthing switch occupies a opening position.
- the shaft of rotation of axis R which through the lid 3 may be metallic.
- the earthing switch is closed and the contacts 8 are inserted into the space left free E between a ground contact 2 and a phase contact attached to the corresponding end of a Bar 1.
- This end of the bar conductive is here advantageously covered with a metal suitable for forming the phase contact 1A.
- the contacts 8 are arranged so as to be elastically deformable (here according to the direction axial bars) to facilitate insertion between the phase contacts 1A of the conducting bars 1 and earth contacts 2.
- these contacts of switching 8 are U-shaped with fingers of elastic contacts at each end of a branch of the U, so that the current flowing in a branch is opposed to the current flowing in the other branch to tend to move each branch away from one of the other for high current values.
- This increases the contact pressure between the fingers of U-branch contacts and fixed phase contact or soil on which these fingers support, preventing thus the erosion of contacts.
- the edges of the fingers of contacts of a switching contact 8 are rounded for dielectric and mechanical reasons.
- FIG. 1B each contact of switchover 18 has a closed curve shape, for partially ovoid example, fixed to the support 7.
- Each switching contact 18 can be split by streaks to promote its elasticity.
- the basic material is a good electrical conductor, by example of copper-chromium. Curved parts can be in tungsten, while the points of contact, in the contact position, are placed in a zone without tungsten.
- the closed or ovoid shape can be asymmetrical with respect to the points of contact or symmetrical. With such a form of contact of switching 18, the current can take two paths different, symbolized by arrows, on both sides of this closed form, the reaction forces of the current to the switching elements being reduced.
- Figure 1C illustrates another variant of realization of the shape of the contact elements.
- These contact elements 28 have two rods 28A and 28B fixed on a conductive support. When closing of the disconnector, these rods 28A and 28B penetrate each in a female contact 26 in the form of a tulip, fixed in a cavity respectively of the conductive bar 1 '' '' and earth contact 2 '' ''.
- One of the two stems 28A is longer than the second rod 28B so as to it comes into contact with its female contact 26 of the earth contact 2 '' '' before the second rod 28B does not come into contact with its female contact 26 of the busbar 1 '' ''.
- these two stems 28A and 28B rotate around the axis of rotation R of the switching element 6, their position relative to their respective female contacts 26 may vary slightly. Also, the female contacts 26 in the form of tulip are elastic or are attached in such a way that they can make a slight radial movement with respect to rods 28A and 28B.
- the fingers of contacts D are covered with a material resistant to the arc like tungsten, so that the tungsten does not touch the surface of the contacts phase and earth but be arranged in front of fingers of contacts to receive the bow first electric.
- the contact area of the contact fingers on the fixed contacts of earth and phase is made of copper or brass, preferably in galvanized silver.
- these contacts of phase and ground respectively 1A and 2 are covered with an arc-resistant material tungsten, for example by fixation (eg welding or other) of tungsten rings on the edges frontal face and are also galvanized to money as is known for this type of contact.
- FIGS. 2 and 3 show respectively the switching element 6 when the disconnector is closed and when the disconnector is open.
- FIGS. 2 and 3 show the star shape at three branches of the support 7 and the contacts 8 arranged in a triangle configuration at the ends of branches of the support 7.
- the mobile switching element 6 performs a rotation around the axis of rotation R and the contacts switching 8 carried by this element 6 come insert transversely to the axis of the bars conductors 1 in the space left free between phase contacts of the busbars 1 and the earth contacts 2.
- the switching element is rotated by a command (not shown) which is coupled to the axis of rotation R (tree of command) from the outside of the envelope.
- the switching contacts 8 then provide the connection between the phase contacts of the bars conductors 1 and the earth contacts 2.
- FIGS. 2 and 3 show contacts 8 to several elastically deformable contact fingers.
- FIG. 3 shows the earthing switch in open position.
- Contacts 8 are arranged in the space between two adjacent bus bars. It is advantageous to provide elastic contacts CE attached to the cover, and in electrical contact with the lid, in order to electrically connect each switching contact to cover in the open position of the disconnector Earth.
- a simple leaf spring attached to the cover can suffice for a reliable electrical connection between a switching contact and cover. This avoids that the switching contacts 8 are each at one floating potential in the open position, which may cause partial discharges.
- FIGS. 4 and 5 there is shown a three-phase earthing switch, which unlike the earthing switch shown in Figures 2 and 3, has parallel conducting bars 1 ' disposed in a row arrangement, i.e. in an overlay configuration.
- the switching element 6 ' is mounted sliding in the envelope 5 transversely to busbars 1 ', switching contacts 8' carried by the switching element 6 'to engage in the space left free between the phase contact of each conducting bar 1 'and each earth contact (not shown in these figures).
- Figure 4 shows the switching element 6 'when the disconnector earth is closed and figure 5 shows the element of 6 'switching when the earthing switch is open.
- the switching element 6 ' is composed of a support 7 'sliding, here a bar made of material insulation, on which are fixed according to a configuration row three 8 'switch contacts similar to those shown for Figures 1 to 3.
- FIGS. 4 and 5 show a 9 'mechanism turning a rotary motion around an axis of rotation R 'of a lever 11' in one movement in translation of a rod 10 'connected to articulation to the support 7 'which is guided in translation in a plane perpendicular to the bars 1 'by guides 12'.
- the axis of rotation R 'as well that the earth contacts (not shown) are mounted in a lid that closes the end of the envelope 5.
- the switching element 6 'mobile performs a translation and switching contacts 8 'come insert transversely to the axis of the bars conductors 1 'in the space left free between phase contacts of the conducting bars 1 'and the earth contacts.
- the contacts 8 'then ensure the electrical connection between the phase contacts of the conducting bars 1 'and earth contacts 2'.
- the earthing switch includes in the casing 5 a single conductor bar 1 "(with a phase contact 1A '') coaxial with the tubular casing 5 and a single earth contact 2 '' disposed in the axial extension of the bar 1 "and mounted through in the lid 3 '' closing the envelope 5 ''.
- the switching element 6 '' carries a single contact of 8 '' switching as already described above and is mounted on a support 7 "of insulating material, here a branch of insulating material mounted on an axis rotating R "through the lid 3".
- Figures 7 and 8 show the position center of the single conductor bar 1 '' and the eccentric position of the axis of rotation R ''.
- the order of earthing switch according to the invention comes into engagement on the axis of rotation R, R ', R' 'and is preferably arranged on the outside of the closing lid the envelope and therefore in the longitudinal extension of the envelope which further contributes to obtaining a great compactness of the disconnector according to the invention.
- FIGS. 9 to 11 there is shown a other provision of a single-phase earthing switch according to the invention arranged to be installed on a section of the busbar.
- a disconnector can be in the form of a module with a cylindrical envelope short enough to be able to access to the assembly or disassembly of elements of the switch.
- This envelope surrounds a bar conductive that can be held in position so classical by insulating supports such as by example two insulating cones attached to both ends of the envelope.
- Such a module earthing switch is then intended to be interposed tightly between two shielded appliances (gas-insulated) or between one line section and an armored unit.
- the earth contact 2 '' 'and the phase contact 1' '' A does not are not aligned with the axis of the busbar 1 '' '.
- the phase contact 1 '' 'A is fixed on the side of the busbar while the earth contact 2 '' '' is fixed in the envelope 5 facing the contact of phase, these two contacts being aligned transversely to the busbar leaving a free space E '' ' between them.
- the switching element 6 '' 'which is rotary switch comprises a switching contact 8 '' 'which is fixed on a rotating support 7 '' 'around an axis of rotation R '' 'passing through the cylindrical wall of the envelope.
- the rotary support 7 '' ' is at least part consisting of an insulating material.
- Figure 9 the earthing switch is closed and the switch contact is inserted between phase and earth contacts in free space E '' '.
- Figure 10 shows the earthing switch of the Figure 9 in the open position while Figure 11 shows the earthing switch in open position but seen from above.
- the axis of rotation R '' 'of the rotary support 7' '' is naturally offset from the axis of the busbar 1 '' 'and the rotating support 7 '' 'is held in position by a P level fixed inside the enclosure and by a TR watertight crossing through which the rotary support 7 '' 'spring of the envelope to be coupled to a control member.
- the part of the support 7 '' ' which passes through the envelope level of the leaktight crossing TR is made of a material insulation, and this part can advantageously be separable from the rest of the support 7 '' 'to facilitate the mounting of the main part of the support by the interior of the envelope.
- Earth contact 2 '' ' is isolated electrically from the casing by an insulating tube T '' ' similar to tube T shown in Figure 1A.
- an elastic contact CE '' ' on which comes into electrical contact the contact of 8 '' 'switching when the disconnector is completely open.
- contacts CE elastics visible in Figures 2 and 3, it avoids as well as the switching contact 8 '' 'is at a floating potential in the open position complete disconnector.
- this provision of earthing switch can be easily extended to a three-phase earthing switch, and more easily particular to a three-bar earthing switch superimposed conductors in the same envelope.
- a support rotary formed in part by an insulating rod which is offset from the plane containing the three axes of the bars conductive.
- Each of the three switching contacts is then carried by an insulating branch attached to the rod and is so mobile in a plane perpendicular to the plane of the bars.
Landscapes
- Gas-Insulated Switchgears (AREA)
- Sink And Installation For Waste Water (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Earth Drilling (AREA)
- Keying Circuit Devices (AREA)
- Emergency Protection Circuit Devices (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
Description
La présente invention concerne un sectionneur de terre haute ou moyenne tension à isolation au gaz comprenant dans une enveloppe, fermée de façon étanche pour être remplie d'un gaz isolant diélectriquement, au moins une barre conductrice à laquelle correspond un contact de terre, un contact de phase fixé à ladite barre et destiné à être raccordé électriquement au contact de terre pour la mise à la terre de ladite barre.The present invention relates to a high or medium voltage earthing switch gas insulation comprising in an envelope, closed tightly to be filled with an insulating gas dielectrically, at least one conductive bar to which corresponds to a contact of earth, a contact of phase fixed to said bar and intended to be connected electrically in contact with the earth for setting earth of said bar.
L'invention s'applique tout particulièrement à un sectionneur de terre dit sectionneur de terre haute vitesse, ce type de sectionneur présentant un temps de commutation très faible grâce à une commande à ressorts ce qui permet d'éviter la formation d'arcs électriques.The invention applies especially at a so-called earthing switch high-speed earthing switch, this type of disconnector with a very short switching time low thanks to a spring drive which allows to avoid the formation of electric arcs.
On connaít déjà du document WO 96/17420 un sectionneur de terre triphasé tel que défini ci dessus. Dans ce sectionneur connu, les trois barres conductrices sont coudées de façon radiale dans l'enveloppe de telle façon que leurs extrémités respectives soient disposées sur la périphérie du trajet d'une pièce conductrice rotative reliée à la terre. L'inconvénient de cette construction est qu'elle est compliquée et coûteuse à réaliser. En plus cette construction est encombrante en raison du fait que les barres conductrices doivent être coudées. Par ailleurs, avec cette construction, il n'est pas possible de mesurer individuellement la résistance électrique de chaque barre conductrice. WO 96/17420 already known from three-phase earthing switch as defined above. In this known disconnector, the three bars conductors are bent radially in the envelope in such a way that their ends respective ones are arranged on the periphery of the path of a rotating conductive part connected to the Earth. The disadvantage of this construction is that it is complicated and expensive to perform. In addition to this construction is cumbersome because of the fact that busbars must be bent. Otherwise, with this construction it is not possible to individually measure the electrical resistance of each busbar.
Un sectionneur de terre analogue à celui du WO 96/17420 est décrit dans le brevet SE 420,033. Ce sectionneur comporte un contact de terre qui est déplacé vers chaque barre conductrice selon une direction longitudinale parallèle à l'axe des barres. Cet agencement présente également l'inconvénient d'être encombrant.An earthing switch similar to that of the WO 96/17420 is described in SE 420,033. This isolator has a ground contact that is moved to each conductor bar according to a longitudinal direction parallel to the axis of the bars. This arrangement also has the disadvantage of being cumbersome.
Le but de l'invention est de remédier aux inconvénients indiqués ci-dessus en proposant un sectionneur de terre plus compact et plus simple mécaniquement et qui permet en outre la mesure de la résistance électrique sur chaque barre conductrice quand le sectionneur de terre est fermé.The object of the invention is to remedy disadvantages mentioned above by proposing a more compact and simple earthing switch mechanically and which also allows the measurement of the electrical resistance on each conductor bar when the earthing switch is closed.
A cet effet, l'invention a pour objet un sectionneur de terre haute ou moyenne tension à isolation au gaz comprenant dans une enveloppe, fermée de façon étanche pour être remplie d'un gaz isolant diélectriquement, au moins une barre conductrice à laquelle correspond un contact de terre, un contact de phase fixé à ladite barre et destiné à être raccordé électriquement au contact de terre pour la mise à la terre de ladite barre, caractérisé en ce que le contact de terre est monté fixe dans l'enveloppe face au contact de phase en laissant avec ce dernier un espace libre, en ce qu'un élément de commutation est monté mobile dans l'enveloppe entre le contact de phase et le contact de terre, cet élément de commutation comprenant d'une part, un contact de commutation qui vient court-circuiter l'espace laissé libre entre le contact de phase et le contact de terre pour relier électriquement le contact de terre et le contact de phase lorsque le sectionneur est fermé et d'autre part, un support au moins en partie électriquement isolant sur lequel est fixé le contact de commutation de telle sorte que le contact de commutation est isolé électriquement du contact de phase et du contact de terre dans une position d'ouverture du sectionneur.For this purpose, the subject of the invention is a high or medium voltage earthing switch gas insulation comprising in an envelope, closed tightly to be filled with an insulating gas dielectrically, at least one conductive bar to which corresponds to a contact of earth, a contact of phase fixed to said bar and intended to be connected electrically in contact with the earth for setting earth of said bar, characterized in that the contact of earth is mounted fixed in the envelope facing the phase contact by leaving a space with the latter free, in that a switching element is mounted in the envelope between the phase contact and the earth contact, this switching element comprising on the one hand, a switching contact that short-circuit the space left free between the contact of phase and ground contact to electrically connect earth contact and phase contact when the disconnector is closed and, on the other hand, less partly electrically insulating on which is fixed the switching contact so that the switching contact is electrically isolated from phase contact and earth contact in a open position of the disconnector.
Selon un premier mode de réalisation d'un sectionneur de terre triphasé selon l'invention :
- les trois barres conductrices parallèles sont agencées selon une configuration en triangle équilatéral et l'élément de commutation est monté rotatif autour d'un axe de rotation disposé au centre du triangle ; cette construction présente l'avantage d'utiliser au maximum l'espace laissé libre entre les barres conductrices ce qui contribue à la réduction de l'encombrement du sectionneur ;
- l'élément de commutation peut comporter trois contacts de commutation montés selon une configuration en triangle sur un support rotatif en matière isolante électriquement, le support pouvant être avantageusement en forme d'étoile à trois branches ;
- l'élément de commutation peut être monté rotatif sur un couvercle fermant l'enveloppe.
- the three parallel conductor bars are arranged in an equilateral triangle configuration and the switching element is rotatably mounted about an axis of rotation disposed in the center of the triangle; this construction has the advantage of making maximum use of the free space left between the conductive bars, which contributes to reducing the size of the disconnector;
- the switching element may comprise three switching contacts mounted in a triangle configuration on a rotating support of electrically insulating material, the support being advantageously in the form of a three-pointed star;
- the switching element can be rotatably mounted on a cover closing the envelope.
Selon un second mode de réalisation d'un sectionneur de terre triphasé selon l'invention :
- les trois des barres conductrices parallèles sont agencées selon une disposition en rangée et l'élément de commutation est monté coulissant dans l'enveloppe transversalement aux barres conductrices ;
- l'élément de commutation comporte trois contacts disposés selon une configuration en rangée sur un support coulissant en matière isolante ;
- le support coulissant est une barre en matière isolante.
- the three of the parallel busbars are arranged in a row arrangement and the switching element is slidably mounted in the casing transverse to the busbars;
- the switching element comprises three contacts arranged in a row configuration on a sliding support of insulating material;
- the sliding support is a bar of insulating material.
Le sectionneur de terre selon l'invention peut présenter encore les particularités suivantes :
- les contacts de l'élément de commutation sont déformables élastiquement ;
- les contacts de l'élément de commutation sont en forme de U et comprennent des doigts de contacts déformables élastiquemennt,
- les contacts de l'élément de commutation sont en forme de courbe fermée et comprennent des éléments de contact déformables élastiquement,
- les contacts de l'élément de commutation sont équipés de deux tiges de commutation destinées à s'insérer chacune dans un contact femelle en forme de tulipe d'un des deux contacts, la tige de commutation correspondant au contact de terre est plus longue que l'autre. Cet agencement des contacts de l'élément de commutation contribue à l'obtention d'une meilleure insertion de ceux-ci dans l'espace laissé libre entre un contact de terre et un contact de phase tout en entraínant une augmentation de la pression de contact favorable pour les fortes valeurs de courants.Plusieurs exemples de réalisation d'un sectionneur de mise à la terre selon l'invention sont décrits ci-après et illustrés par les dessins.
- La figure 1 est une vue latérale en coupe longitudinale d'un sectionneur de terre triphasé suivant l'invention avec un élément de commutation rotatif.
- Les figures 1A, 1B, 1C montrent plus en détails un contact de terre fixé dans l'enveloppe.
- La figure 2 est une vue très schématique selon la coupe selon A-A sur la figure 1 de l'élément de commutation quand le sectionneur de terre est fermé.
- La figure 3 est analogue à la figure 2 mais dans une position d'ouverture du sectionneur de terre.
- La figure 4 est une vue très schématique analogue à la figure 2 d'un sectionneur de terre en position fermée ayant un élément de commutation à mouvement translatif.
- La figure 5 est analogue à la figure 4 mais dans une position d'ouverture du sectionneur de terre.
- La figure 6 est une vue latérale en coupe longitudinale d'un sectionneur de terre monophasé selon l'invention avec un élément de commutation rotatif.
- La figure 7 est une vue très schématique en coupe selon A'-A' sur la figure 6 de l'élément de commutation quand le sectionneur de terre est fermé.
- La figure 8 est analogue à la figure 7 mais dans une position d'ouverture du sectionneur de terre.
- La figure 9 montre encore une autre disposition d'un sectionneur de terre selon l'invention dans laquelle les contacts de terre et de phase sont alignés transversalement à la barre conductrice. Sur la figure 9, le sectionneur est dans une position de fermeture.
- La figure 10 montre le sectionneur de terre illustré sur la figure 9 mais dans une position d'ouverture.
- La figure 11 est une vue de dessus du sectionneur de terre montré sur la figure 10.
- the contacts of the switching element are elastically deformable;
- the contacts of the switching element are U-shaped and comprise elastically deformable contact fingers,
- the contacts of the switching element are in the form of a closed curve and comprise elastically deformable contact elements,
- the contacts of the switching element are equipped with two switching rods each intended to fit into a tulip-shaped female contact of one of the two contacts, the switching rod corresponding to the earth contact is longer than the 'other. This arrangement of the contacts of the switching element contributes to obtaining a better insertion thereof in the space left free between a ground contact and a phase contact while causing an increase in the contact pressure. favorable for the high current values. Several embodiments of an earthing switch according to the invention are described below and illustrated by the drawings.
- Figure 1 is a longitudinal sectional side view of a three-phase earthing switch according to the invention with a rotary switching element.
- Figures 1A, 1B, 1C show in more detail a ground contact fixed in the envelope.
- Figure 2 is a very schematic view according to the section on AA in Figure 1 of the switching element when the earthing switch is closed.
- Figure 3 is similar to Figure 2 but in an open position of the earthing switch.
- Figure 4 is a very schematic view similar to Figure 2 of a closed earthing switch having a switching element with a translational movement.
- Figure 5 is similar to Figure 4 but in an open position of the earthing switch.
- Figure 6 is a longitudinal sectional side view of a single-phase earthing switch according to the invention with a rotary switching element.
- Figure 7 is a very schematic sectional view along A'-A 'in Figure 6 of the switching element when the earthing switch is closed.
- Figure 8 is similar to Figure 7 but in an open position of the earthing switch.
- Figure 9 shows yet another arrangement of an earthing switch according to the invention wherein the earth and phase contacts are aligned transversely to the conductor bar. In Figure 9, the disconnector is in a closed position.
- Figure 10 shows the earthing switch shown in Figure 9 but in an open position.
- Fig. 11 is a top view of the earthing switch shown in Fig. 10.
Sur la figure 1 on a représenté à titre
d'exemple non limitatif un sectionneur de terre
triphasé selon l'invention avec un élément de
commutation rotatif. Le sectionneur de terre comprend,
dans une enveloppe 5 fermée de façon étanche pour être
remplie d'un gaz diélectrique comme du SF6, trois
barres conductrices 1 parallèles agencées selon une
configuration en triangle équilatéral, seules deux
barres conductrices 1 étant montrées sur la figure 1.
Un contact de terre 2 est disposé ici dans le
prolongement axial de chaque barre conductrice 1 face à
un contact de phase relié électriquement à la barre
conductrice correspondante. Le contact de terre et le
contact de phase sont séparés l'un de l'autre d'un
espace laissé libre E, cet espace E étant suffisant
pour assurer une isolation diélectrique. Il est
envisageable sans sortir du cadre de l'invention que le
contact de terre et le contact de phase soient
légèrement décalés de l'axe de la barre correspondante
si par exemple le contact de phase est monté sur une
petite patte fixée à la barre et s'étendant
transversalement à celle-ci. Dans ce cas, le contact de
terre et le contact de phase sont encore alignés avec
l'axe de la barre conductrice correspondante.In Figure 1 there is shown
non-limiting example an earthing switch
three phase according to the invention with an element of
rotary switching. The earthing switch includes,
in a sealed
Comme visible sur la figure 1, les trois
contacts de terre 2 qui sont fixes dans l'enveloppe
sont associées respectivement aux trois contacts de
phase des barres conductrices 1. Chaque contact de
terre est monté traversant dans un couvercle 3
typiquement métallique fixé à l'enveloppe, et est
isolé du couvercle par l'intermédiaire d'un tube
isolant T plus visible sur la figure 1A. Les
dimensions (en particulier l'épaisseur de paroi du
tube) sont prévues pour tenir l'isolation entre le
contact de terre et le couvercle pendant une impulsion
de tension typiquement de l'ordre de quelques kilovolts
affectant ce contact de terre. Du côté extérieur du
couvercle 3, chaque contact de terre 2 forme une prise
de terre 4 destinée à être branchée à la terre et qui
sert aussi pour la mesure de la résistance électrique
de la barre conductrice qui lui est associée quand le
sectionneur est fermé.As shown in Figure 1, the three
2 ground contacts that are fixed in the envelope
are associated respectively with the three contacts of
phase of the
Le couvercle 3, qui est généralement
réalisé dans le même matériau que l'enveloppe,
typiquement en aluminium, ferme de façon étanche
l'enveloppe 5 du sectionneur, ici une enveloppe
métallique de forme tubulaire. Comme on peut le voir
sur la figure 1, le couvercle 3 est disposé à une
extrémité de l'enveloppe tubulaire 5, ce qui facilite
les opérations de maintenance du sectionneur de terre
selon l'invention.The lid 3, which is usually
made of the same material as the envelope,
typically aluminum, tightly closed
the
Dans un tel sectionneur de terre selon
l'invention, il n'est pas indispensable que les
contacts de terre 2 soient électriquement isolés du
couvercle 3. Ce couvercle étant généralement métallique
et au potentiel de la terre de même que l'enveloppe 5
du sectionneur, il peut servir à évacuer les courants
des trois phases vers la terre lors de la fermeture du
sectionneur. Bien entendu, il n'est plus possible avec
cette configuration de mesurer la résistance électrique
d'une barre conductrice, dans la position fermée du
sectionneur, par le branchement d'un appareil de test
sur le contact de terre correspondant à cette barre.In such a disconnector according to
invention, it is not essential that the
Le sectionneur de terre décrit sur la
figure 1 comporte aussi dans l'enveloppe un élément de
commutation 6 mobile en rotation dans un plan
transversal aux barres 1 et qui est composé d'un
support 7 rotatif autour d'un axe R et de trois
contacts électriques de commutation 8. Les contacts 8
sont de préférence réalisés avec des matériaux
résistants aux arcs électriques, tels que du cuivre
recouvert de tungstène. Le support 7 est un support au
moins en partie isolant électriquement en forme
d'étoile à trois branches, les contacts 8 étant fixés
aux extrémités des branches du support 7 de sorte
qu'ils sont isolés électriquement des contacts de terre
et de phase quand le sectionneur de terre occupe une
position d'ouverture. L'arbre de rotation d'axe R qui
traverse le couvercle 3 peut être métallique.The earthing switch described on the
Figure 1 also includes in the envelope an element of
switching 6 mobile in rotation in a plane
crosswise to
Sur la figure 1, le sectionneur de terre
est fermé et les contacts 8 sont insérés dans l'espace
laissé libre E entre un contact de terre 2 et un
contact de phase fixé à l'extrémité correspondante d'un
barre conductrice 1. Cette extrémité de la barre
conductrice est ici avantageusement recouverte d'un
métal approprié afin de former le contact de phase 1A.
Les contacts 8 sont agencés de telle sorte à être
élastiquement déformables (ici selon la direction
axiale des barres) pour faciliter leur insertion entre
les contacts de phase 1A des barres conductrices 1 et
les contacts de terre 2.In Figure 1, the earthing switch
is closed and the
Avantageusement, ces contacts de
commutation 8 sont en forme de U avec des doigts de
contacts élastiques à chaque extrémité d'une branche du
U, de façon à ce que le courant circulant dans une
branche soit opposé au courant circulant dans l'autre
branche pour tendre à éloigner chaque branche l'une de
l'autre pour les valeurs de courant élevées. Ceci
augmente la pression de contact entre les doigts de
contacts d'une branche du U et le contact fixe de phase
ou de terre sur lequel ces doigts appuient, empêchant
ainsi l'érosion des contacts. Les bords des doigts de
contacts d'un contact de commutation 8 sont arrondis
pour des raisons diélectriques et mécaniques.Advantageously, these contacts of
switching 8 are U-shaped with fingers of
elastic contacts at each end of a branch of the
U, so that the current flowing in a
branch is opposed to the current flowing in the other
branch to tend to move each branch away from one of
the other for high current values. This
increases the contact pressure between the fingers of
U-branch contacts and fixed phase contact
or soil on which these fingers support, preventing
thus the erosion of contacts. The edges of the fingers of
contacts of a
Les figures 1B et 1C décrivent deux
variantes de réalisation des contacts de commutation 8.
En effet, sur la figure 1B, chaque contact de
commutation 18 présente une forme en courbe fermée, par
exemple partiellement ovoïde, fixée au support 7.
Chaque contact de commutation 18 peut être fendu par
des stries pour favoriser son caractère élastique. Le
matériau de base est un bon conducteur électrique, par
exemple du cuivre-chrome. Les parties incurvées peuvent
être en tungstène, alors que les points de contact,
dans la position de contact, sont placés dans une zone
sans tungstène. La forme fermée ou ovoïde peut être
asymétrique par rapport aux points de contact ou
symétrique. Avec une telle forme de contact de
commutation 18, le courant peut prendre deux chemins
différents, symbolisés par des flèches, des deux côtés
de cette forme fermée, les forces de réaction du
courant aux éléments de commutation étant réduites.Figures 1B and 1C describe two
variants of the switching
La figure 1C illustre une autre variante de
réalisation de la forme des éléments de contact. Ces
éléments de contact 28 possèdent deux tiges 28A et 28B
fixées sur un support conducteur. Lors de la fermeture
du sectionneur, ces tiges 28A et 28B pénètrent chacune
dans un contact femelle 26 en forme de tulipe, fixé
dans une cavité respectivement de la barre conductrice
1'''' et du contact de terre 2''''. Une des deux tiges
28A est plus longue que la deuxième tige 28B de façon à
ce qu'elle rentre en contact avec son contact femelle
26 du contact de terre 2'''' avant que la deuxième tige
28B ne rentre en contact avec son contact femelle 26 de
la barre conductrice 1''''. Du fait que ces deux tiges
28A et 28B tournent autour de l'axe de rotation R de
l'élément de commutation 6, leur position relative à
leurs contacts femelles 26 respectifs peut varier
légèrement. Aussi, les contacts femelles 26 en forme de
tulipe sont élastiques ou sont fixés de façon à pouvoir
effectuer un léger mouvement radial par rapport aux
tiges 28A et 28B.Figure 1C illustrates another variant of
realization of the shape of the contact elements. These
Les doigts de contacts D, illustrés sur les figures 2 et 3 mais plus visibles encore sur la figure 1A, sont recouverts d'un matériau résistant à l'arc électrique comme le tungstène, de telle façon que le tungstène ne touche pas la surface des contacts de phase et de terre mais soit disposé à l'avant des doigts de contacts pour recevoir en premier l'arc électrique. La zone de contact des doigts de contacts sur les contacts fixes de terre et de phase est réalisée en cuivre ou en laiton, de préférence en argent galvanisé. De la même manière ces contacts de phase et de terre respectivement 1A et 2 sont recouverts d'un matériau résistant à l'arc électrique comme le tungstène, par exemple par fixation (par soudage ou autre) d'anneaux de tungstène sur les bords de face frontale et sont par ailleurs galvanisés à l'argent comme cela est connu pour ce type de contact.The fingers of contacts D, illustrated on the figures 2 and 3 but more visible in the figure 1A, are covered with a material resistant to the arc like tungsten, so that the tungsten does not touch the surface of the contacts phase and earth but be arranged in front of fingers of contacts to receive the bow first electric. The contact area of the contact fingers on the fixed contacts of earth and phase is made of copper or brass, preferably in galvanized silver. In the same way these contacts of phase and ground respectively 1A and 2 are covered with an arc-resistant material tungsten, for example by fixation (eg welding or other) of tungsten rings on the edges frontal face and are also galvanized to money as is known for this type of contact.
Les figures 2 et 3 montrent respectivement
l'élément de commutation 6 quand le sectionneur est
fermé et quand le sectionneur est ouvert. Sur les
figures 2 et 3, on a représenté la forme en étoile à
trois branches du support 7 et les contacts 8 disposés
selon une configuration en triangle aux extrémités des
branches du support 7.Figures 2 and 3 show respectively
the switching
Pour mettre les barres conductrices 1 à la
terre, l'élément de commutation 6 mobile effectue une
rotation autour de l'axe de rotation R et les contacts
de commutation 8 portés par cet élément 6 viennent
s'insérer transversalement à l'axe des barres
conductrices 1 dans l'espace laissé libre entre les
contacts de phase des barres conductrices 1 et les
contacts de terre 2. L'élément de commutation est
entraíné en rotation par une commande (non représentée)
qui est couplée à l'axe de rotation R (arbre de
commande) depuis l'extérieure de l'enveloppe. Les
contacts de commutation 8 assurent alors la connexion
électrique entre les contacts de phase des barres
conductrices 1 et les contacts de terre 2. Sur les
figures 2 et 3, on a représenté des contacts 8 à
plusieurs doigts de contact élastiquement déformables.To put the
On voit également sur les figures 2 et 3
que l'axe de rotation R de l'élément de commutation 6
est disposé au centre du triangle défini par la
configuration en triangle équilatéral des barres
conductrices 1.We can also see in Figures 2 and 3
that the axis of rotation R of the
Sur la figure 3 on a représenté le
sectionneur de terre en position ouverte. Les contacts
de commutation 8 sont disposés dans l'espace entre deux
barres conductrices adjacentes. Il est avantageux de
prévoir des contacts élastiques CE fixés au couvercle,
et en contact électrique avec le couvercle, afin de
relier électriquement chaque contact de commutation au
couvercle dans la position ouverte du sectionneur de
terre. Un simple ressort à lame fixé au couvercle peut
suffire pour une liaison électrique fiable entre un
contact de commutation et le couvercle. On évite ainsi
que les contacts de commutation 8 soient chacun à un
potentiel flottant en position ouverte, ce qui
risquerait de provoquer des décharges partielles.FIG. 3 shows the
earthing switch in open position.
Sur les figures 4 et 5, on a représenté un
sectionneur de terre triphasé, qui à la différence du
sectionneur de terre montré sur les figures 2 et 3,
comporte des barres conductrices parallèles 1'
disposées selon une disposition en rangée, c'est à dire
dans une configuration de superposition. Comme visible
sur ces figures, l'élément de commutation 6' est monté
coulissant dans l'enveloppe 5 transversalement aux
barres conductrices 1', les contacts de commutation 8'
portés par l'élément de commutation 6' venant s'engager
dans l'espace laissé libre entre le contact de phase de
chaque barre conductrice 1' et chaque contact de terre
(non représenté sur ces figures). La figure 4 montre
l'élément de commutation 6' quand le sectionneur de
terre est fermé et la figure 5 montre l'élément de
commutation 6' quand le sectionneur de terre est
ouvert.In FIGS. 4 and 5, there is shown a
three-phase earthing switch, which unlike the
earthing switch shown in Figures 2 and 3,
has parallel conducting bars 1 '
disposed in a row arrangement, i.e.
in an overlay configuration. As visible
in these figures, the switching element 6 'is mounted
sliding in the
L'élément de commutation 6' est composé d'un support 7' coulissant, ici une barre en matière isolante, sur lequel sont fixés selon une configuration en rangée trois contacts de commutation 8' similaires à ceux présentés pour les figures 1 à 3.The switching element 6 'is composed of a support 7 'sliding, here a bar made of material insulation, on which are fixed according to a configuration row three 8 'switch contacts similar to those shown for Figures 1 to 3.
On a représenté sur les figures 4 et 5 un
mécanisme 9' transformant un mouvement rotatif autour
d'un axe de rotation R' d'un levier 11' en un mouvement
en translation d'une bielle 10' reliée à articulation
au support 7' qui est guidé en translation dans un plan
perpendiculaire aux barres 1' par des guides 12'. Dans
cet exemple de réalisation, l'axe de rotation R' ainsi
que les contacts de terre (non représentés) sont montés
dans un couvercle qui ferme l'extrémité de l'enveloppe
5.FIGS. 4 and 5 show a
9 'mechanism turning a rotary motion around
an axis of rotation R 'of a lever 11' in one movement
in translation of a rod 10 'connected to articulation
to the support 7 'which is guided in translation in a plane
perpendicular to the bars 1 'by guides 12'. In
this embodiment, the axis of rotation R 'as well
that the earth contacts (not shown) are mounted
in a lid that closes the end of the
Pour mettre les barres conductrices 1' à la terre, l'élément de commutation 6' mobile effectue une translation et les contacts de commutation 8' viennent s'insérer transversalement à l'axe des barres conductrices 1' dans l'espace laissé libre entre les contacts de phase des barres conductrices 1' et les contacts de terre. Les contacts 8' assurent alors la connexion électrique entre les contacts de phase des barres conductrices 1' et les contacts de terre 2'.To put the busbars 1 'to the earth, the switching element 6 'mobile performs a translation and switching contacts 8 'come insert transversely to the axis of the bars conductors 1 'in the space left free between phase contacts of the conducting bars 1 'and the earth contacts. The contacts 8 'then ensure the electrical connection between the phase contacts of the conducting bars 1 'and earth contacts 2'.
Sur les figures 6 à 8, on a représenté un sectionneur de terre monophasé avec un élément de commutation 6" mobile rotatif .In Figures 6 to 8, there is shown a single-phase earthing switch with an element of 6 "rotating mobile switching.
Le principe de fonctionnement du
sectionneur de terre est le même que celui décrit en
relation avec les figures 1 à 3. Comme visible sur les
figures 6 à 8, le sectionneur de terre comprend dans
l'enveloppe 5 une seule barre conductrice 1" (avec un
contact de phase 1A'') coaxiale à l'enveloppe tubulaire
5 et un seul contact de terre 2'' disposé dans le
prolongement axial de la barre 1" et monté traversant
dans le couvercle 3'' fermant l'enveloppe 5''.
L'élément de commutation 6'' porte un seul contact de
commutation 8'' tel qu'il a déjà été décrit ci-dessus
et est monté sur un support 7'' en matière isolante,
ici une branche en matière isolante montée sur un axe
de rotation R" traversant le couvercle 3''.The operating principle of the
earthing switch is the same as that described in
relationship with Figures 1 to 3. As visible on
Figures 6 to 8, the earthing switch includes in
the casing 5 a
Sur les figures 7 et 8, on voit la position centrale de l'unique barre conductrice 1'' et la position excentrée de l'axe de rotation R''.Figures 7 and 8 show the position center of the single conductor bar 1 '' and the eccentric position of the axis of rotation R ''.
Comme on peut le comprendre, la commande du sectionneur de terre selon l'invention vient en prise sur l'axe de rotation R,R',R'' et est de préférence disposée sur le côté extérieur du couvercle fermant l'enveloppe et donc dans le prolongement longitudinal de l'enveloppe ce qui contribue encore à l'obtention d'une grande compacité du sectionneur selon l'invention. As can be understood, the order of earthing switch according to the invention comes into engagement on the axis of rotation R, R ', R' 'and is preferably arranged on the outside of the closing lid the envelope and therefore in the longitudinal extension of the envelope which further contributes to obtaining a great compactness of the disconnector according to the invention.
Sur les figures 9 à 11, on a représenté une autre disposition d'un sectionneur de terre monophasé selon l'invention agencé pour être installé sur un tronçon de la barre conductrice. Un tel sectionneur peut se présenter sous la forme d'un module avec une enveloppe cylindrique suffisamment courte pour pouvoir accéder au montage ou au démontage des éléments du sectionneur. Cette enveloppe entoure une barre conductrice pouvant être maintenue en position de façon classique par des supports isolants tels que par exemple deux cônes isolants fixés aux deux extrémités de l'enveloppe. Un tel module sectionneur de terre est alors destiné à être intercalé de façon étanche entre deux appareils blindés (à isolation au gaz) ou entre un tronçon de ligne et un appareil blindés.In FIGS. 9 to 11, there is shown a other provision of a single-phase earthing switch according to the invention arranged to be installed on a section of the busbar. Such a disconnector can be in the form of a module with a cylindrical envelope short enough to be able to access to the assembly or disassembly of elements of the switch. This envelope surrounds a bar conductive that can be held in position so classical by insulating supports such as by example two insulating cones attached to both ends of the envelope. Such a module earthing switch is then intended to be interposed tightly between two shielded appliances (gas-insulated) or between one line section and an armored unit.
Selon cette disposition du sectionneur, le
contact de terre 2''' et le contact de phase 1'''A ne
sont pas alignés avec l'axe de la barre conductrice
1'''. Le contact de phase 1'''A est fixé sur le flanc
de la barre conductrice tandis que le contact de terre
2'''' est fixé dans l'enveloppe 5 face au contact de
phase, ces deux contacts étant alignés transversalement
à la barre conductrice en laissant un espace libre E'''
entre eux. L'élément de commutation 6''' qui est
rotatif comprend un contact de commutation 8''' qui est
fixé sur un support rotatif 7''' autour d'un axe de
rotation R''' traversant la paroi cylindrique de
l'enveloppe. Le support rotatif 7''' est au moins en
partie constitué d'un matériau isolant.According to this arrangement of the disconnector, the
earth contact 2 '' 'and the phase contact 1' '' A does not
are not aligned with the axis of the busbar
1 '' '. The phase contact 1 '' 'A is fixed on the side
of the busbar while the earth contact
2 '' '' is fixed in the
Sur la figure 9, le sectionneur de terre est fermé et le contact de commutation est inséré entre les contacts de phase et de terre dans l'espace libre E'''. La figure 10 montre le sectionneur de terre de la figure 9 en position ouverte tandis que la figure 11 montre le sectionneur de terre en position ouverte mais vu de dessus. Comme visible sur la figure 11, l'axe de rotation R''' du support rotatif 7''' est naturellement décalé de l'axe de la barre conductrice 1''' et le support rotatif 7''' est maintenu en position par un palier P fixé à l'intérieur de l'enveloppe et par une traversée étanche TR par laquelle le support rotatif 7''' ressort de l'enveloppe pour être couplé à un organe de commande. Il n'est pas nécessaire que la partie du support 7''' qui traverse l'enveloppe au niveau de la traversée étanche TR soit en un matériau isolant, et cette partie peut avantageusement être séparable du restant du support 7''' afin de faciliter le montage de l'essentiel du support par l'intérieur de l'enveloppe.In Figure 9, the earthing switch is closed and the switch contact is inserted between phase and earth contacts in free space E '' '. Figure 10 shows the earthing switch of the Figure 9 in the open position while Figure 11 shows the earthing switch in open position but seen from above. As shown in Figure 11, the axis of rotation R '' 'of the rotary support 7' '' is naturally offset from the axis of the busbar 1 '' 'and the rotating support 7 '' 'is held in position by a P level fixed inside the enclosure and by a TR watertight crossing through which the rotary support 7 '' 'spring of the envelope to be coupled to a control member. It is not necessary that the part of the support 7 '' 'which passes through the envelope level of the leaktight crossing TR is made of a material insulation, and this part can advantageously be separable from the rest of the support 7 '' 'to facilitate the mounting of the main part of the support by the interior of the envelope.
Le contact de terre 2''' est isolé électriquement de l'enveloppe par un tube isolant T''' similaire au tube T représenté sur la figure 1A. On a représenté sur la figure 11, un contact élastique CE''' sur lequel vient en contact électrique le contact de commutation 8''' quand le sectionneur est complètement ouvert. Comme mentionné précédemment pour les contacts élastiques CE visibles sur les figures 2 et 3, on évite ainsi que le contact de commutation 8''' soit à un potentiel flottant dans la position d'ouverture complète du sectionneur.Earth contact 2 '' 'is isolated electrically from the casing by an insulating tube T '' ' similar to tube T shown in Figure 1A. We have represented in FIG. 11, an elastic contact CE '' ' on which comes into electrical contact the contact of 8 '' 'switching when the disconnector is completely open. As mentioned previously for contacts CE elastics visible in Figures 2 and 3, it avoids as well as the switching contact 8 '' 'is at a floating potential in the open position complete disconnector.
Bien entendu, cette disposition du sectionneur de terre peut être étendue facilement à un sectionneur de terre triphasé, et plus facilement en particulier à un sectionneur de terre pour trois barres conductrices superposées dans une même enveloppe. De même que pour la disposition précédente pour un sectionneur monophasé, on peut utiliser un support rotatif formé en partie par une tige isolante qui est décalée du plan contenant les trois axes des barres conductrices. Chacun des trois contacts de commutation est alors porté par une branche isolante solidaire de la tige et est ainsi mobile dans un plan perpendiculaire au plan des barres. On peut prévoir une réalisation modulaire d'un tel sectionneur de terre triphasé, avec les avantages d'une commande unique pour mettre à la terre les trois phases et d'une relative compacité.Of course, this provision of earthing switch can be easily extended to a three-phase earthing switch, and more easily particular to a three-bar earthing switch superimposed conductors in the same envelope. Of same as for the previous provision for a single-phase disconnector, it is possible to use a support rotary formed in part by an insulating rod which is offset from the plane containing the three axes of the bars conductive. Each of the three switching contacts is then carried by an insulating branch attached to the rod and is so mobile in a plane perpendicular to the plane of the bars. We can foresee a modular realization of such a disconnector three-phase, with the advantages of a single control for ground the three phases and a relative compactness.
Il est évident que l'invention n'est nullement limitée aux modes de réalisation qui viennent d'être décrits et représentés et qui n'ont été donnés qu'à titre d'exemples ; en particulier, on peut, sans sortir du cadre de l'invention, modifier certaines dispositions ou remplacer certains moyens par des moyens équivalents ou encore remplacer certains éléments par d'autres susceptibles d'assurer la même fonction technique ou une fonction technique équivalente.It is obvious that the invention is not not limited to the embodiments that come to be described and represented and that have not been given as examples; in particular, one can, without out of the scope of the invention, to modify certain provisions or replace certain means with equivalent means or replace some elements by others likely to ensure the same technical function or a technical function equivalent.
Claims (18)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0309961A FR2858879B1 (en) | 2003-08-14 | 2003-08-14 | EARTH DISCONNECT |
FR0309961 | 2003-08-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1507274A1 true EP1507274A1 (en) | 2005-02-16 |
EP1507274B1 EP1507274B1 (en) | 2006-10-04 |
Family
ID=33561179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04103896A Active EP1507274B1 (en) | 2003-08-14 | 2004-08-12 | Earthing switch |
Country Status (6)
Country | Link |
---|---|
US (1) | US6995330B2 (en) |
EP (1) | EP1507274B1 (en) |
CN (1) | CN1303733C (en) |
AT (1) | ATE341828T1 (en) |
DE (1) | DE602004002634T2 (en) |
FR (1) | FR2858879B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7943881B2 (en) | 2005-10-14 | 2011-05-17 | Areva T&D Ag | Grounding disconnector and a method of manufacturing such a grounding disconnector |
CN102496495A (en) * | 2011-12-20 | 2012-06-13 | 施耐德万高(天津)电气设备有限公司 | Energy storage spring operating mechanism for low-voltage disconnecting switch |
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JP4601487B2 (en) * | 2005-05-02 | 2010-12-22 | 三菱電機株式会社 | Gas insulated switchgear |
EP2169794A1 (en) * | 2008-09-26 | 2010-03-31 | Eaton Electric B.V. | Switching installation with arc protection and arc protection method |
JP5546338B2 (en) * | 2010-04-30 | 2014-07-09 | 三菱電機株式会社 | Gas insulated instrument transformer |
CN102568918A (en) * | 2010-12-10 | 2012-07-11 | 沈阳工业大学 | Three-phase rotation type double-fracture vacuum arc extinguishing chamber |
CN110137021B (en) * | 2018-02-09 | 2024-05-03 | Abb瑞士股份有限公司 | Transformer system including a transformer tractor |
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GB2193843A (en) * | 1986-07-25 | 1988-02-17 | Abimer | Medium voltage switches |
WO1996017420A1 (en) * | 1994-11-28 | 1996-06-06 | Asea Brown Boveri Ab | Electric switching device |
DE19612273C1 (en) * | 1996-03-28 | 1997-10-02 | E I B S A | Switch contact-pair for medium and high voltage load disconnecting switch of overhead lines, transformers. HV motors and capacitors etc |
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DE3126745A1 (en) * | 1981-07-02 | 1983-01-20 | Siemens AG, 1000 Berlin und 8000 München | THREE-POLE CABLE CONNECTION UNIT FOR A THREE-POLE METAL-ENCLOSED, COMPRESSED-GAS-INSULATED HIGH-VOLTAGE SWITCHGEAR |
CN85103335B (en) * | 1985-05-15 | 1987-11-18 | 株式会社日立制作所 | Earthed switch of the switch device of gas isolation |
FR2805406B1 (en) * | 2000-02-23 | 2002-08-23 | Alstom | THREE-POSITION ELECTRIC SWITCH WITH AN AXIALLY MOBILE SWITCHING ELEMENT |
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2003
- 2003-08-14 FR FR0309961A patent/FR2858879B1/en not_active Expired - Fee Related
-
2004
- 2004-08-12 DE DE602004002634T patent/DE602004002634T2/en active Active
- 2004-08-12 EP EP04103896A patent/EP1507274B1/en active Active
- 2004-08-12 AT AT04103896T patent/ATE341828T1/en not_active IP Right Cessation
- 2004-08-16 US US10/919,779 patent/US6995330B2/en not_active Expired - Fee Related
- 2004-08-16 CN CNB2004100584625A patent/CN1303733C/en not_active Expired - Fee Related
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GB2193843A (en) * | 1986-07-25 | 1988-02-17 | Abimer | Medium voltage switches |
WO1996017420A1 (en) * | 1994-11-28 | 1996-06-06 | Asea Brown Boveri Ab | Electric switching device |
DE19612273C1 (en) * | 1996-03-28 | 1997-10-02 | E I B S A | Switch contact-pair for medium and high voltage load disconnecting switch of overhead lines, transformers. HV motors and capacitors etc |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7943881B2 (en) | 2005-10-14 | 2011-05-17 | Areva T&D Ag | Grounding disconnector and a method of manufacturing such a grounding disconnector |
CN102496495A (en) * | 2011-12-20 | 2012-06-13 | 施耐德万高(天津)电气设备有限公司 | Energy storage spring operating mechanism for low-voltage disconnecting switch |
CN102496495B (en) * | 2011-12-20 | 2014-04-30 | 施耐德万高(天津)电气设备有限公司 | Energy storage spring operating mechanism for low-voltage disconnecting switch |
Also Published As
Publication number | Publication date |
---|---|
US20050035087A1 (en) | 2005-02-17 |
DE602004002634T2 (en) | 2007-08-16 |
FR2858879B1 (en) | 2005-10-21 |
DE602004002634D1 (en) | 2006-11-16 |
FR2858879A1 (en) | 2005-02-18 |
US6995330B2 (en) | 2006-02-07 |
CN1581617A (en) | 2005-02-16 |
CN1303733C (en) | 2007-03-07 |
ATE341828T1 (en) | 2006-10-15 |
EP1507274B1 (en) | 2006-10-04 |
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