EP3073504B1 - Switch of a three-phase network - Google Patents
Switch of a three-phase network Download PDFInfo
- Publication number
- EP3073504B1 EP3073504B1 EP16162153.7A EP16162153A EP3073504B1 EP 3073504 B1 EP3073504 B1 EP 3073504B1 EP 16162153 A EP16162153 A EP 16162153A EP 3073504 B1 EP3073504 B1 EP 3073504B1
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- European Patent Office
- Prior art keywords
- phase
- switch
- conductor
- load switch
- network according
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- 239000004020 conductor Substances 0.000 claims description 45
- 230000005611 electricity Effects 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
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- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H33/6661—Combination with other type of switch, e.g. for load break switches
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- 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
- H01H33/125—Load break switches comprising a separate circuit breaker
- H01H33/126—Load break switches comprising a separate circuit breaker being operated by the distal end of a sectionalising contact arm
-
- 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
- H01H33/125—Load break switches comprising a separate circuit breaker
Definitions
- the subject of the invention is a switch of a three-phase network.
- the switches referred to here are designed for high and medium voltage, typically from 1 kV to 52 kV, and are normally equipped, in addition to a disconnecting function ensuring the physical disconnection of the conductors, breaking chambers allowing extinguish the electric arcs, thus achieving the switch function.
- Cutoff chambers frequently include vacuum bulbs.
- EP 2 182 536 A Among the many existing devices, mention will be made of the documents EP 2 182 536 A , EP 2 479 769 A , WO2014 / 001029A , WO2013 / 110511A which offer savings prospects on the cost of the switch, by placing the vacuum bulb not on the driver itself, but on a bypass, usually without current flowing, so that the vacuum interrupter is not requested in normal service.
- the disconnector intercepts, during its disconnection stroke, a free end of the branch and moves it.
- the object of the invention is to obtain more economical switches in the case of a three-phase network to the undistributed neutral, by exploiting one of their properties, according to which, when the disconnection of two phases is accomplished, only a capacitive current, of low intensity, circulates in the third phase.
- the invention relates to a switch of a three-phase network, the switch comprising, for two phases of the network, a conductor equipped with a disconnector and a breaking chamber to extinguish currents of arc through the conductors of these two phases after a disconnection operated by said disconnectors, and, for a third phase of the network, a conductor equipped with a disconnector and a cut-off device, characterized in that said device, designed to cut capacitive current arcs, comprises an electrically conductive pallet whose disconnector separates, during disconnection, only to a state of the switch where the breaking chambers have cut the arc currents for the other phases.
- a vacuum bulb is not necessary to extinguish the arc generated by the capacitive current when the other phases have already interrupted the current. It can therefore be omitted for the third phase, which simplifies the switch and makes it much less expensive.
- the conductive pallet is a conductive continuous shunt of electricity of a conductor of the third phase between a fixed end connected to a length of said conductor, the disconnector of the third phase separates during disconnections , and a free end that said disconnector of the third phase reaches during disconnections and from which it separates after being separated from said length of said conductor; and the conductive pallet may comprise either a wire or a bar connected to the fixed end, and a fixed switch tab extending to said free end.
- the figure 1 schematically represents a three-phase undistributed neutral network provided with a switch 1 according to the invention.
- Each of the conductors 2, 3 and 4 of the network may be interrupted by a respective disconnector 5 ", 5 'or 5 consisting of a movable knife adapted to separate from one of the lengths 2a, 3a or 4a of the conductor 2, 3 and 4
- the three disconnectors 5 ", 5 ', 5 are moved by a common control device 6 which synchronizes their movements.
- the conductors 2 and 3 further comprise a breaking chamber 7 associated with their 5 'or 5 "disconnector and which makes it possible to extinguish the electric arcs remaining after the disconnection
- the third conductor 4 does not is not provided.
- each disconnector 5 ", 5 ', 5 could be moved by a specific control device for each phase, these three control devices then being synchronized by electronic means of the switch 1 .
- the breaking chamber 7 comprises a vacuum bulb 8 installed on a branch of the length 2a or 3a of the conductor 2 or 3, this branch passing through the fixed contact 9 of the vacuum bottle 8, a rod 10 passing through the envelope of the vacuum bottle 8 and carrying the moving contact of the vacuum bottle 8, and a rocker 11 articulated to the rod 10 and ending on a free end 12
- the 5 'or 5 "disconnector has its own end articulated by a pivot 13 to the length 2b or 3b by establishing a mechanical and electrical connection, and it is in frictional contact with the complementary length 2a or 3a of said conductor 2 or 3.
- the free end 12 comprises a conductive layer 14 one face directed towards the disconnector 5 'or 5 "in the state that is represented at the figure 2 , and an insulating layer 15 at an opposite face. Finally, a spring 16 recalls the rocker 11 to a closed state of the vacuum bulb 8.
- the switch 5 'or 5 In successive steps of opening of the switch 1, the switch 5 'or 5 "is moved to the left of the Figures 2 to 5 , and comes to touch the conductive layer 14 while remaining connected at first to the length 2a or 3a ( figure 3 ). Once the contact with the conductive layer 14 has been established, the disconnector 5 'or 5 "leaves the length 2a or 3a, then it tilts the pendulum 11, pulling the rod 10 and opening the vacuum bulb 8 ( figure 4 ); finally, the disconnector 5 'or 5 "protrudes from the free end 12, allowing the rocker 11 to come back under the action of the spring 16 ( figure 5 ).
- the stage of figure 2 corresponds to the normal operation of the network, the switch 1 being closed and the conductors 2 and 3 being uninterrupted, the figure 3 the gradual transition of the current by the diversion, the figure 4 when the current is cut off and the arc is extinguished in the vacuum bulb 8, and the figure 5 in the fully open state of the switch 1 and the disconnection of the conductor 2 or 3.
- the 5 'or 5 "disconnector When a reconnection is made, the 5 'or 5 "disconnector returns to the position of the figure 2 rocking the rocker 11 in the other direction by sliding on the insulating layer 15, which prevents early reconnection of the bypass through the vacuum bulb 8. On the contrary, the reconnection occurs only when the disconnector 5 'or 5 " returns to touch the length 2a or 3a, the vacuum bulb 8 remains at rest as there is no other opening movement.
- FIG. 6 and 7 One embodiment of the interruption device for the third phase is shown in Figures 6 and 7 .
- the device may have similarities in size and composition with those of the other two phases, although it is simplified because there is no vacuum bulb.
- Figures 2 to 5 the third conductor 4 may for example include lengths 4a and 4b of the same arrangement as those of other conductors 2 and 3.
- the interrupting chamber 7 is replaced by a conductive pallet 17 unitary and fixed. More precisely, in this embodiment, the conductive pallet 17 is a bypass of the conductor 4 whose shape and extension are similar to those of the branches of the breaking chambers 7.
- This derivation is here however a static conductor which comprises a bar 18 at the location of the vacuum bulb 8 of the other phases, and a switching tab 19 at the location of the rocker 11.
- the bar 18, as well as the switching tab 19, may be copper or copper. aluminum.
- the bar 18 connects the switching tab to the length 4a.
- a free end 20 of the switch tab 19 arrives at the disconnector 5.
- the bar 18 and the switch tab 19 are rigid.
- the disconnector 5 During its disconnection movement, the disconnector 5 reaches the free end 20, rubs on it and moves as previously the current progressively from the main portion of the conductor 4 to the branch formed by the conductive paddle 17, separates from the main portion , and then separates from the conductive pallet 17 in the state of the figure 7 , corresponding to that of the figure 5 , when the disconnector 5 has left the free end 20 of the switch tab 19. At this time, the current flowing through the conductor 4 is completely cut off.
- the common control device 6 drives the three disconnectors 5, 5 'and 5 "which come to touch the conductive end of their respective branch (the vacuum bottle 8 and the rocker 11, or the conductive pallet 17) Then the disconnectors of the first two phases (5 'and 5 ") opening their vacuum interrupter 8, as explained above.
- the three disconnectors 5, 5 'and 5 are always connected to their respective bypass.Once the empty bulbs 8 of the two first open phases, the disconnectors 5, 5' and 5 "of the three phases emerge from their respective bypass so as to completely open the switch 1.
- the arrangement of the conductive pallet 17 of the third phase bypass must be designed to allow the separation between the conductive pallet 17 and the disconnector 5 to occur only at a state of the switch 1 where the chambers cutoff 7 of the other two phases cut the arc currents occurring in the vacuum bulbs 8, that is to say after the opening of these vacuum bulbs 8 and the passage through a zero current to turn off the bow. Indeed, when the arcs in the breaking chambers 7 of the two phases are extinguished, the current that can remain in the third conductor 4 is then a capacitive current of low intensity, of the order of 1 A / km for cables and 20 mA / km for overhead lines.
- the cables considered may be a few kilometers in length, and the airlines a few tens of kilometers, the capacitive current will be of the order of a few amperes.
- the separation between the disconnector 5 and the length 4a of the conductor 4 would occur, in the absence of any cut-off device, while the current is still at its nominal intensity, of 630 A for example, which would give an arc high energy that would make it impossible to perform the cut.
- the third conductor 4 comprises the conductive pallet 17 to extend the connection time until, the current being cut in the other conductors 2 and 3 by the opening of the vacuum bulbs 8, the intensity of the current has decreased in the third conductor 4, tending towards the capacitive current value: the disconnector 5 can then separate from the conductive pallet 17, since the arc produced is of low power and extinguishes itself.
- the invention is applicable with many variations. It is first possible that conductors 2 and 3 are equipped with break chambers of a different kind from those Figures 2 to 5 .
- the gas in which bathe the switch 1 can be any.
- the conductive pallet used for the third conductor 4 can also be of any kind, provided that it allows the connection to be extended for a time sufficient to assist in the weakening of the residual current in the conductor 4, after the extinction of the arcs.
- the invention can also be implemented with disconnectors 5, 5 'and 5 "in the form of knives movable in translation rather than rotating.
- FIG. 8 and 9 A quite different realization of aspect of the previous one, although of the same operation, is thus represented with Figures 8 and 9 , which correspond respectively to Figures 6 and 7 from the previous realization.
- the conductive pallet 17 of the third phase composed here of a bypass of the third conductor 4, is replaced here by a conductive pallet 22 in the form of a tab extending laterally from the end of the length 4a, obliquely or in an arc of circle, in the direction of the movement of the disconnector 5 to open the switch.
- the electric current passes through the entire length 4a, and also passes in the conductive pallet 22 at the beginning of the opening of the switch, since the end of the disconnector 5 rubs on it.
- This simple embodiment has the advantage of not requiring derivation for the third phase.
- FIG. 10 Another variant of the third phase is also represented in figure 10 . Its operation is similar to that of the achievements shown in Figures 6 to 9 , but this variant has the advantage of having a structure close to the structures of the two other phases presented to the Figures 2 to 5 .
- the conductive pallet of the third phase comprises a bypass comprising a balance 11a articulated to a rod 10a and ending on a free end 12 of the branch.
- the rod 10a is of course not connected to a vacuum bulb but fixed and directly connected to the conductor 4a.
- the free end 12 comprises a conductive layer 14 on one side facing the disconnector 5 and an insulating layer 15 on an opposite side.
- the disconnector 5 comes to touch the conductive layer 14 while remaining connected at first to the length 4a. Once the contact with the conductive layer 14 has been established, the disconnector 5 leaves the length 4a. Then, the disconnector 5 tilts the balance 11a and finally beyond the free end 12, leaving the balance 11a back into place under the action of a spring.
- This movement of the disconnector 5 is synchronized with the movements of the disconnectors 5 'and 5 "of the other two phases, so that when the disconnector 5 leaves the free end 12 of the branch, the vacuum ampoules 8 of the other two phases will already be open and the corresponding arcs are off.
- each of the three disconnectors 5 ", 5 ', 5 is controlled by a own control device, these three control devices being controlled and synchronized by electronic means
- the invention provides that said electronic means are able to delay the opening order of the disconnector 5 of the third phase devoid of vacuum bulb with respect to the opening order of the disconnectors 5 "and 5 'of the first two phases.
- the opening of the third phase will only be controlled after the moment when the breaking chambers 7 of the two other phases have already cut off the arc currents occurring in the vacuum interrupters 8.
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
Le sujet de l'invention est un interrupteur d'un réseau triphasé.The subject of the invention is a switch of a three-phase network.
Les interrupteurs dont il est question ici sont conçus pour la haute et la moyenne tension, typiquement de 1 kV à 52 kV, et sont normalement munis, outre d'une fonction sectionneur assurant la déconnexion physique des conducteurs, de chambres de coupure permettant d'éteindre les arcs électriques, réalisant ainsi la fonction interrupteur.The switches referred to here are designed for high and medium voltage, typically from 1 kV to 52 kV, and are normally equipped, in addition to a disconnecting function ensuring the physical disconnection of the conductors, breaking chambers allowing extinguish the electric arcs, thus achieving the switch function.
Les chambres de coupure comprennent fréquemment des ampoules à vide. Parmi les nombreux dispositifs existants, on mentionnera ceux des documents
Ces dispositifs sont efficaces, mais on peut regretter que les ampoules à vide restent des dispositifs onéreux, comme le premier document cité ci-dessus le souligne. Le but de l'invention est d'obtenir des interrupteurs plus économiques dans le cas d'un réseau triphasé au neutre non distribué, en exploitant une de leurs propriétés, d'après laquelle, quand la déconnexion de deux phases est accomplie, seul un courant capacitif, de faible intensité, circule dans la troisième phase.These devices are effective, but we can regret that vacuum bulbs are expensive devices, as the first document cited above underlines. The object of the invention is to obtain more economical switches in the case of a three-phase network to the undistributed neutral, by exploiting one of their properties, according to which, when the disconnection of two phases is accomplished, only a capacitive current, of low intensity, circulates in the third phase.
Pour résumer, l'invention est relative à un interrupteur d'un réseau triphasé, l'interrupteur comprenant, pour deux phases du réseau, un conducteur équipé d'un sectionneur et d'une chambre de coupure permettant d'éteindre des courants d'arc à travers les conducteurs de ces deux phases après une déconnexion opérée par lesdits sectionneurs, et, pour une troisième phase du réseau, un conducteur équipé d'un sectionneur et d'un dispositif de coupure, caractérisé en ce que ledit dispositif, conçu pour couper des arcs de courant capacitif, comprend une palette conductrice de l'électricité dont le sectionneur se sépare, pendant la déconnexion, seulement à un état de l'interrupteur où les chambres de coupure ont coupé les courants d'arc pour les autres phases. En effet, une ampoule à vide n'est pas nécessaire pour éteindre l'arc engendré par le courant capacitif quand les autres phases ont déjà interrompu le courant. Elle peut donc être omise pour la troisième phase, ce qui simplifie l'interrupteur et le rend nettement moins coûteux.To summarize, the invention relates to a switch of a three-phase network, the switch comprising, for two phases of the network, a conductor equipped with a disconnector and a breaking chamber to extinguish currents of arc through the conductors of these two phases after a disconnection operated by said disconnectors, and, for a third phase of the network, a conductor equipped with a disconnector and a cut-off device, characterized in that said device, designed to cut capacitive current arcs, comprises an electrically conductive pallet whose disconnector separates, during disconnection, only to a state of the switch where the breaking chambers have cut the arc currents for the other phases. Indeed, a vacuum bulb is not necessary to extinguish the arc generated by the capacitive current when the other phases have already interrupted the current. It can therefore be omitted for the third phase, which simplifies the switch and makes it much less expensive.
Dans un mode particulier de réalisation, la palette conductrice est une dérivation continue conductrice de l'électricité d'un conducteur de la troisième phase entre une extrémité fixe reliée à une longueur dudit conducteur, dont le sectionneur de la troisième phase se sépare pendant les déconnexions, et une extrémité libre que ledit sectionneur de la troisième phase atteint pendant les déconnexions et dont il se sépare après s'être séparé de ladite longueur dudit conducteur; et la palette conductrice peut comprendre soit un fil soit une barre relié à l'extrémité fixe, et une patte de commutation fixe s'étendant jusqu'à ladite extrémité libre.In a particular embodiment, the conductive pallet is a conductive continuous shunt of electricity of a conductor of the third phase between a fixed end connected to a length of said conductor, the disconnector of the third phase separates during disconnections , and a free end that said disconnector of the third phase reaches during disconnections and from which it separates after being separated from said length of said conductor; and the conductive pallet may comprise either a wire or a bar connected to the fixed end, and a fixed switch tab extending to said free end.
L'invention sera maintenant décrite plus en détail dans ses divers aspects, caractéristiques et avantages au moyen des figures suivantes :
- la
figure 1 est une vue générale d'un réseau triphasé sur lequel l'invention est implantée ; - les
figures 2, 3, 4 et 5 illustrent une chambre de coupure connue au cours de l'ouverture de l'interrupteur ; - les
figures 6 et 7 illustrent une réalisation du dispositif de la phase sur laquelle l'invention est implantée ; - les
figures 8 et 9 illustrent une autre réalisation du dispositif de la phase sur laquelle l'invention est implantée ; - et la
figure 10 une autre variante du dispositif de la phase sur laquelle l'invention est implantée.
- the
figure 1 is a general view of a three-phase network on which the invention is implanted; - the
Figures 2, 3, 4 and 5 illustrate a known breaking chamber during the opening of the switch; - the
Figures 6 and 7 illustrate an embodiment of the device of the phase on which the invention is implanted; - the
Figures 8 and 9 illustrate another embodiment of the device of the phase on which the invention is implanted; - and the
figure 10 another variant of the device of the phase on which the invention is implanted.
La
Une alternative, non représentée sur les figures, serait que chaque sectionneur 5", 5', 5 pourrait être déplacé par un dispositif de commande propre pour chaque phase, ces trois dispositifs de commande étant alors synchronisés par des moyens électroniques de l'interrupteur 1.An alternative, not shown in the figures, would be that each
On passe aux figures suivantes 2 à 5 pour illustrer un exemple de réalisation de l'interrupteur pour les conducteurs 2 et 3 de deux des phases du réseau. Ces figures reprennent certaines de celles du second document cité et ne décrivent pas les parties originales de l'invention. L'état connecté des conducteurs 2 et 3 est représenté à la
Dans des étapes successives d'ouverture de l'interrupteur 1, le sectionneur 5' ou 5" est déplacé vers la gauche des
Quand une reconnexion est faite, le sectionneur 5' ou 5" revenant à la position de la
Un mode de réalisation du dispositif d'interruption pour la troisième phase est représenté aux
L'explication est la suivante. Lors d'un mouvement de déconnexion, le dispositif de commande 6 commun entraîne les trois sectionneurs 5, 5' et 5" qui viennent toucher l'extrémité conductrice de leur dérivation respective (l'ampoule à vide 8 et le balancier 11, ou la palette conductrice 17). Puis les sectionneurs des deux premières phases (5' et 5") ouvrant leur ampoule à vide 8, comme expliqué précédemment. Bien entendu, durant l'ouverture des ampoules à vide, les trois sectionneurs 5, 5' et 5" sont toujours connectés à leur dérivation respective. Une fois les ampoules à vide 8 des deux premières phases ouvertes, les sectionneurs 5, 5' et 5" des trois phases se dégagent de leur dérivation respective de façon à ouvrir complètement l'interrupteur 1.The explanation is as follows. During a disconnection movement, the common control device 6 drives the three
L'agencement de la palette conductrice 17 de dérivation de la troisième phase doit être conçu pour permettre que la séparation entre la palette conductrice 17 et le sectionneur 5 survienne seulement à un état de l'interrupteur 1 où les chambres de coupure 7 des deux autres phases ont coupé les courants d'arc survenant dans les ampoules à vide 8, c'est-à-dire après l'ouverture de ces ampoules à vide 8 et le passage par un zéro de courant pour éteindre l'arc. En effet, quand les arcs dans les chambres de coupure 7 des deux phases sont éteints, le courant pouvant subsister dans le troisième conducteur 4 est alors un courant capacitif de faible intensité, de l'ordre de 1 A/km pour des câbles et 20 mA/km pour des lignes aériennes. Les câbles considérés pouvant avoir quelques kilomètres de longueur, et les lignes aériennes quelques dizaines de kilomètres, le courant capacitif sera de l'ordre de quelques ampères. Toutefois, la séparation entre le sectionneur 5 et la longueur 4a du conducteur 4 se produirait, en l'absence de tout dispositif de coupure, alors que le courant est encore à son intensité nominale, de 630 A par exemple, ce qui donnerait un arc de grande énergie qui rendrait impossible d'effectuer la coupure. C'est pourquoi le troisième conducteur 4 comprend la palette conductrice 17 pour prolonger la durée de connexion jusqu'à ce que, le courant étant coupé dans les autres conducteurs 2 et 3 par l'ouverture des ampoules à vide 8, l'intensité du courant ait diminué dans le troisième conducteur 4, en tendant vers la valeur de courant capacitif : le sectionneur 5 peut alors se séparer de la palette conductrice 17, puisque l'arc produit est de faible puissance et s'éteint de lui-même.The arrangement of the
L'invention est applicable avec de nombreuses variantes. Il est tout d'abord possible que les conducteurs 2 et 3 soient munis de chambres de coupure de genre différent de celle qu'on a représenté aux
Une réalisation assez différente d'aspect de la précédente, quoique de même fonctionnement, est ainsi représentée aux
L'état d'ouverture complète de l'interrupteur, avec extinction des courants résiduels, est obtenu quand les courants d'arc de la première et de la deuxième phases ont été éteints et que le sectionneur 5 s'est détaché de la palette conductrice 22.The state of complete opening of the switch, with extinguishing of the residual currents, is obtained when the arc currents of the first and second phases have been extinguished and the
Une autre variante de la troisième phase est également représentée en
Dans le mode de réalisation alternatif dans lequel chacun des trois sectionneurs 5", 5', 5 est commandé par un dispositif de commande propre, ces trois dispositifs de commande étant pilotés et synchronisés par des moyens électroniques, l'invention prévoit que lesdits moyens électroniques sont capables de retarder l'ordre d'ouverture du sectionneur 5 de la troisième phase dépourvue d'ampoule à vide par rapport à l'ordre d'ouverture des sectionneurs 5" et 5' des deux premières phases. Ainsi, l'ouverture de la troisième phase ne sera commandée qu'après le moment où les chambres de coupure 7 des deux autres phases auront déjà coupé les courants d'arc survenant dans les ampoules à vide 8.In the alternative embodiment in which each of the three
Claims (10)
- Load switch (1) for a three-phase network, the load switch comprising a conductor (2, 3) fitted with an isolating switch (5', 5") and a cutoff chamber (7) for two of the network phases for extinguishing arc currents passing through said two phases after a disconnection made by said isolating switches, and for a third phase of the network, a conductor (4) fitted with an isolating switch (5) and a cutoff device, characterised in that said device, designed to interrupt capacitive current arcs, comprises a conducting blade (17, 22) from which the isolating switch (5) separates during disconnection, only at a state of the load switch in which the cutoff chambers have interrupted the arc currents.
- Load switch in a three-phase network according to claim 1, characterised in that the cutoff chamber of each of said phases comprises a vacuum tube (8), and the cutoff device in said third phase is not provided with a vacuum tube .
- Load switch in a three-phase network according to claim 1, characterised in that the conducting blade (17) is a continuous, electricity conducting branch bypassing a conductor of the third phase between a fixed end connected to a length (4a) of said conductor, from which the isolating switch (5) of the third phase separates during disconnections, and a free end (20) that said isolating switch (5) of the third phase reaches during disconnections and from which it separates after it has separated from said length (4a) of said conductor (4).
- Load switch in a three-phase network according to claim 1, characterised in that the conducting blade (22) comprises a tab extending laterally with respect to the conductor (4) along a direction of movement of the isolating switch (5) during the disconnections, and on which the isolating switch (5) moves.
- Load switch in a three-phase network according to claim 2, characterised in that the cutoff chambers of said two phases each comprise an electricity conducting bypass branch between a fixed end connected to a length of a conductor in one of said two phases, from which the isolating switch separates during disconnection, and a free end (12) that the isolating switch reaches during disconnection and from which it separates after it has separated from said length, said bypass branch comprising the vacuum tube (8), a portion (11) of said bypass branch, between the vacuum tube and the free end, being free to move so as to open the vacuum tube when the isolating switch reaches the free end.
- Load switch in a three-phase network according to claim 5, characterised in that the conducting blade also comprises an electricity conducting bypass branch between a fixed end connected to a length of a conductor (4a) of said third phase, from which the isolating switch separates during the disconnection, and a free end (12) that the isolating switch reaches during disconnection and from which it separates after having separated from said length, said bypass branch comprising a mobile portion (11a) comprising the free end (12) and hinged to a fixed rod (10a) directly connected to the conductor (4a) of the third phase.
- Load switch in a three-phase network according to claim 3, characterised in that the conducting blade (17) comprises either a wire or a bar (18) connected to the fixed end, and a fixed switching tab (19) extending as far as said free end (20).
- Load switch in a three-phase network according to any one of claims 1 to 7, characterised in that the isolating switches (5) comprise a rotating blade.
- Load switch in a three-phase network according any one of claims 1 to 7, characterised in that the isolating switches comprise a blade moving in translation.
- Load switch in a three-phase network according any one of claims 1 to 9, characterised in that the network is at a voltage between 1 kV and 52 kV.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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FR1552624A FR3034251B1 (en) | 2015-03-27 | 2015-03-27 | SWITCH OF A THREE-PHASE NETWORK |
Publications (2)
Publication Number | Publication Date |
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EP3073504A1 EP3073504A1 (en) | 2016-09-28 |
EP3073504B1 true EP3073504B1 (en) | 2018-11-07 |
Family
ID=53776720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16162153.7A Active EP3073504B1 (en) | 2015-03-27 | 2016-03-24 | Switch of a three-phase network |
Country Status (4)
Country | Link |
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EP (1) | EP3073504B1 (en) |
CN (1) | CN106206147B (en) |
ES (1) | ES2709670T3 (en) |
FR (1) | FR3034251B1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3060195B1 (en) * | 2016-12-14 | 2020-11-06 | Schneider Electric Ind Sas | ELECTRICAL CONNECTION APPARATUS WITH ARC CUT-OFF BYPASS, AND PROCEDURE FOR OPENING THIS APPARATUS |
US10818452B1 (en) | 2018-08-30 | 2020-10-27 | Robert Neal Hendrix | Power outage isolation device |
ES2888700B2 (en) * | 2020-06-25 | 2022-05-18 | Ormazabal Corporate Tech A I E | Load break or short-circuit current switch |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19913059C2 (en) * | 1999-03-17 | 2001-02-15 | Siemens Ag | High-voltage circuit breakers, especially in a three-pole version |
FR2831342B1 (en) * | 2001-10-22 | 2003-12-19 | Alstom | PROTECTION SYSTEM FOR A THREE-PHASE DISTRIBUTION TRANSFORMER INSULATED IN A LIQUID DIELECTRIC COMPRISING A PHASE DISCOVER SWITCH |
DE102005002139B4 (en) * | 2005-01-13 | 2007-01-25 | Siemens Ag | Three-position switch with cam |
FR2937786B1 (en) * | 2008-10-29 | 2010-12-24 | Areva T & D Sa | CURRENT SWITCH ON AN ELECTRIC LINE COMPRISING A VACUUM BULB |
FR2970809B1 (en) * | 2011-01-25 | 2013-02-22 | Schneider Electric Ind Sas | MEDIUM VOLTAGE CUTTING DEVICE COMPRISING A VACUUM BULB |
DE102012200962B4 (en) | 2012-01-24 | 2018-07-26 | Siemens Aktiengesellschaft | Switchgear, in particular switch disconnector, for medium-voltage switchgear |
CN104335312B (en) | 2012-06-25 | 2017-05-24 | 西门子公司 | Three-position load isolating switch for medium-voltage switchgear assemblies |
FR3009643B1 (en) * | 2013-08-09 | 2015-08-07 | Schneider Electric Ind Sas | VACUUM BULB, CIRCUIT BREAKER POLE COMPRISING SUCH A VACUUM BULB AND METHODS OF MAKING SUCH DEVICES |
-
2015
- 2015-03-27 FR FR1552624A patent/FR3034251B1/en not_active Expired - Fee Related
-
2016
- 2016-03-24 ES ES16162153T patent/ES2709670T3/en active Active
- 2016-03-24 EP EP16162153.7A patent/EP3073504B1/en active Active
- 2016-03-25 CN CN201610474320.XA patent/CN106206147B/en active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
CN106206147A (en) | 2016-12-07 |
CN106206147B (en) | 2020-03-10 |
FR3034251B1 (en) | 2017-04-28 |
ES2709670T3 (en) | 2019-04-17 |
FR3034251A1 (en) | 2016-09-30 |
EP3073504A1 (en) | 2016-09-28 |
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