EP0863524B1 - Disconnecting switch with five poles for phase inverter use - Google Patents

Disconnecting switch with five poles for phase inverter use Download PDF

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Publication number
EP0863524B1
EP0863524B1 EP98400458A EP98400458A EP0863524B1 EP 0863524 B1 EP0863524 B1 EP 0863524B1 EP 98400458 A EP98400458 A EP 98400458A EP 98400458 A EP98400458 A EP 98400458A EP 0863524 B1 EP0863524 B1 EP 0863524B1
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EP
European Patent Office
Prior art keywords
switches
contact
levers
contacts
lever
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EP98400458A
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German (de)
French (fr)
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EP0863524A1 (en
Inventor
François Biquez
Jean-Marc Willieme
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Grid Solutions SAS
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Areva T&D SAS
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/54—Lever switches with blade-type contact co-operating with one or two spring-clip contacts, e.g. knife switch
    • H01H21/58—Change-over switches without stable intermediate position

Definitions

  • the invention relates to current disconnectors comprising five switches used as phase inverters in a three-phase system, for example for pumping units where the alternator becomes the engine so to obtain the reversal of the direction of rotation of the rotary machine.
  • phase reversing disconnector comprising five switches is known in particular from US patent document 4 357 502.
  • the device requires the use of two control systems coupled to a shaft transmission.
  • a first lever is permanently integral in rotation with the shaft transmission, and can be operated by a main control system reversible to two positions.
  • An auxiliary control system operates like a two-position clutch for selectively transmitting the torque from the drive shaft to either of two other levers which are each connected to a pair of switches by a connecting rod system.
  • the assembly thus produced is relatively bulky and requires a coordination of the main control system with the auxiliary system Clutch.
  • FIG. 1 shows a classic block diagram of such a disconnector phase inverter comprising five switches C1 to C5.
  • the disconnector is connected between three phase inputs indicated respectively by A, B, C and three phase outputs indicated respectively by A ', B', C '.
  • Each switch comprises a first fixed contact 1 and a second contact 2 which cooperates with the first contact.
  • the second contact 2 is mobile to occupy a first position according to which it is electrically connected to the fixed contact (see switches C2, C3, C4) and a second position according to which it is separated of the fixed contact (see switches C1 and C5).
  • the movable contacts 2 of the switches C1 and C4 are electrically connected to the phase input C
  • the movable contacts 2 C2 and OS switches are electrically connected to phase A input
  • the movable contact 2 of the switch C3 is connected to the phase input B.
  • the fixed contacts 1 of switches C1 and C2 are connected electrically at the phase output A '
  • the fixed contacts 1 of the switches C4 and OS are electrically connected to the phase output C 'and the fixed contact 1 of the switch C3 is electrically connected to phase output B '.
  • this disconnector for phase inverter is summarized in the table of FIG. 2.
  • switches C1 and C5 are open (these switches being in the position indicated by O) and the switches C2 to C4 are closed (these switches being in the position indicated by F).
  • phase A input is electrically connected to phase output A '
  • the input of phase B is electrically connected to phase output B '
  • phase input C is electrically connected to the phase output C '.
  • switches C1 to C5 are all open. According to this position, the inputs of the disconnector are all separated from its outputs.
  • a third position E2 of the disconnector switches C1, C3 and C5 are closed and switches C2 and C4 are open.
  • phase input C is electrically connected to phase output A '
  • the input of phase B is electrically connected to phase output B '
  • phase input A is electrically connected to the phase output C '.
  • this disconnector is designed to pass from the position E1 to position E2 (or vice versa) necessarily passing through the EO position, other connection possibilities between inputs and outputs of the disconnector being prohibited.
  • the object of the invention is to propose an arrangement of switches for such a disconnector for phase inverter use in which the switches are controlled by a single command while avoiding connection possibilities prohibited.
  • the applicant sought to transform such a single control switching system to get a disconnector for phase inverter use for a three-phase network, knowing that two phases are inverted necessarily by passing through a position intermediate opening of all switches in the system.
  • a disconnector electric comprising a plurality of electric switches which include each a first fixed contact and a second mobile contact cooperating with the fixed contact, this second contact being arranged to move by a movement in translation in a longitudinal direction between a first position in which it is connected to the fixed contact and a second position in which it is separate from the fixed contact, the movement of the second contact being ensured by the play a pair of levers hinged together in rotation, one end of the first lever being connected to the second contact via an axis of rotation movable in translation in said longitudinal direction, one end of the second lever being mounted in rotation on a fixed axis relative to the first contact, a connecting rod system comprising third integral levers respectively in rotation of the second levers, this linkage system also comprising a set of control rods articulated in rotation to the third levers and interconnected one after the other in order to connect the second lever of each switch to a single control of said connecting rod system, one of these connecting rods being connected to said control by via a
  • such a switch arrangement allows to design a disconnector with five switches functioning as phase reverser with a single three-position control and a system connecting rod connecting the second levers of the switches to the control, by a judicious choice of the ratio between the linkage kinematics and the kinematics internal electrical switches.
  • Figure 1 is a very schematic representation of a disconnector comprising five switches and serving as a phase inverter.
  • Figure 2 summarizes in the form of a table, the operation of such phase reversing disconnector.
  • Figure 3 shows schematically a disconnector with five switches according to the invention in a first position corresponding to the position E1 of the table in FIG. 2.
  • Figure 4 shows the disconnector of Figure 3 in a second position corresponding to position E0 of the table in FIG. 2.
  • Figure 5 shows the disconnector of Figure 3 in a third position corresponding to position E2 of the table in FIG. 2.
  • FIG. 3 shows schematically five switches C1 to C5 according to the invention which form part of a so-called pentapole disconnector serving as phase inverter, similar to that shown in Figure 1, the inputs and the outputs corresponding to phases A to C and A 'to C' are however not represented
  • Each switch such as C1 includes a fixed contact 1 and a contact 2 which is movable to occupy a first position according to which it is connected to fixed contact 1 (closing position F of the switch) and a second position according to which it is separated from fixed contact 1 (opening position O of the switch).
  • the movable contact 2 moves between these two positions by a translational movement in a longitudinal direction of movement indicated by 3
  • the translational movement in the direction 3 of the movable contact 2 is ensured by the play of a pair of levers L1 and L2. More specifically, the lever L1 has one end which is connected to contact 2 via an axis A1 of rotation mobile in translation in the longitudinal direction 3. The levers L1 and L2 are hinged together in rotation about an axis A2. The lever L2 has one end which is rotatably mounted on an axis A3 fixed relative to the contact 1.
  • the relative angular displacement between the levers L1 and L2 is transformed in a translational movement of the movable contact 2, the choice of the length levers L1 and L2 and the relative angular displacement between these two levers for adjusting the stroke of the movable contact.
  • a disconnector according to the invention with five switches electrics used as phase reverser includes a single control three-position rickshaw 4 mechanically connected to the switches by through a linkage system 5.
  • the three-position control 4 is here an electric motor whose rotor A4 serves as a movement transmission device for the linkage system.
  • the connecting rod system 5 comprises, for each switch C1, C2, C4 and C5, a lever L3 integral in rotation with the lever L2 of each switch and for switch C3 a lever L4 integral in rotation with the lever L2 of this switch.
  • the operation of the linkage system 5 is as follows.
  • lever L6 moves in translation the control rod L5 to which it is connected.
  • the displacement of this lever L5 is transformed into an angular displacement of lever L3 associated with switch C5.
  • the translational movement of this connecting rod command L5 causes the translational movement of the control rod L5 associated with switch C4, causing the translational movement of the movable contact 2 of this switch C4, and so on for the others switches C3 to C1.
  • Obtaining positions E1, E0, E2 of the disconnector in accordance with table in Figure 2 is based on the ratio of the linkage kinematics and the internal kinematics of the switches, the lengths of the control rods L5 having no influence on the operation of the disconnector.
  • the disconnector is shown in its position E0 in the table of the Figure 2. In this position, we see that all the movable contacts 2 of switches are separated from the fixed contacts 1.
  • the levers L3 and L4 are here parallel to each other.
  • the switches C1 and C5 have their levers L1 and L2 which occupy a first identical angular position.
  • the levers L1 and L2 of switches C2 and C4 occupy a second identical angular position.
  • the levers L1 and L2 of switch C3 occupy a third angular position intermediate to the first and second angular positions above.
  • the kinematics of the levers L1 and L2 of the switch C3 is different from that of levers L1 and L2 of the switches C1, C2 and C4, C5. Furthermore, the angular position of the levers L1 and L2 of the switch C1 is symmetrical, in direction 3, at the angular position of levers L1 and L2 of switch C2.
  • the lever L6 has rotated in a first direction of rotation of 90 ° relative to its position in Figure 4.
  • the levers L1 and L2 of the switches C1 and C5 now occupy said second angular position so that these switches are open.
  • the L2 levers of these switches have turned clockwise opposite an angle ⁇ .
  • the levers L2 of the switches C2 and C4 have rotated counterclockwise by an angle ⁇ so that these switches are also in a closed position.
  • the L2 lever of switch C3 has rotated counterclockwise by a larger angle ⁇ that ⁇ (because the length of the lever L4 is less than the length of the levers L3) so that this switch is in the closed position.
  • the lever L6 has rotated in a second direction of rotation of 90 ° relative to its position in Figure 4.
  • the levers L1 and L2 of the switches C2 and C4 now occupy said first angular position and these switches are open.
  • the L2 levers of these switches have therefore turned clockwise at an angle ⁇ .
  • the levers L2 of switches C1 and C5 have turned clockwise by an angle ⁇ so these switches are in closed position.
  • the lever L2 of the switch C3 has turned in the direction time of an angle ⁇ so that this switch is also in a position of closing.
  • the transition from position E0 to the position E1 of the disconnector is obtained by a first rotation of 90 ° of the rotor of command 4 and the transition from position E0 to position E2 is obtained by a second 90 ° rotation of the rotor of control 4 but in the direction reverse at the first rotation.
  • the rotation angle of the rotor A4 can be different 90 ° (for example 30 °) but an angle of 90 ° ensures no reversibility of the transmission of the command on the move.
  • the length of the rod L6 is chosen according to the power of the control 4 and the effort required to move the movable contacts 2.
  • linkage system 5 can be replaced by a gear system or a cable system.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Waveguide Switches, Polarizers, And Phase Shifters (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Inverter Devices (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Breakers (AREA)

Abstract

The construction has a number of fixed contact points (1) which engage a moving arm contact (2). The moving arm contact is moved longitudinally towards and away from the fixed contact by a series of levers (41,42). The two levers pivot around a central hinge point, sliding the contact into the fixed position (F) or by turning the two levers around, moving the contact to an open position (O).

Description

L'invention concerne les sectionneurs de courant comprenant cinq commutateurs utilisés comme inverseurs de phases dans un système triphasé, par exemple pour des groupes de pompage où l'alternateur devient moteur afin d'obtenir l'inversion du sens de rotation de la machine tournante.The invention relates to current disconnectors comprising five switches used as phase inverters in a three-phase system, for example for pumping units where the alternator becomes the engine so to obtain the reversal of the direction of rotation of the rotary machine.

Un tel sectionneur inverseur de phases comportant cinq commutateurs est connu notamment du document de brevet US 4 357 502. Le dispositif nécessite l'utilisation de deux systèmes de commande couplés à un arbre de transmission. Un premier levier est en permanence solidaire en rotation de l'arbre de transmission, et peut être actionné par un système principal de commande réversible à deux positions. Un système auxiliaire de commande fonctionne comme un embrayage à deux positions permettant de transmettre sélectivement le couple de l'arbre de transmission à l'un ou l'autre de deux autres leviers qui sont chacun reliés à une paire de commutateurs par un système d'embiellage. L'ensemble ainsi réalisé est relativement encombrant et nécessite une coordination du système principal de commande avec le système auxiliaire d'embrayage.Such a phase reversing disconnector comprising five switches is known in particular from US patent document 4 357 502. The device requires the use of two control systems coupled to a shaft transmission. A first lever is permanently integral in rotation with the shaft transmission, and can be operated by a main control system reversible to two positions. An auxiliary control system operates like a two-position clutch for selectively transmitting the torque from the drive shaft to either of two other levers which are each connected to a pair of switches by a connecting rod system. The assembly thus produced is relatively bulky and requires a coordination of the main control system with the auxiliary system Clutch.

La figure 1 montre un schéma synoptique classique d'un tel sectionneur inverseur de phases comportant cinq commutateurs C1 à C5. Le sectionneur est branché entre trois entrées de phases indiquées respectivement par A,B,C et trois sorties de phases indiquées respectivement par A',B',C'. Chaque commutateur comprend un premier contact fixe 1 et un second contact 2 qui coopère avec le premier contact. Le second contact 2 est mobile pour occuper une première position selon lequel il est relié électriquement au contact fixe (voir les commutateurs C2,C3,C4) et une seconde position selon laquelle il est séparé du contact fixe (voir les commutateurs C1 et C5).Figure 1 shows a classic block diagram of such a disconnector phase inverter comprising five switches C1 to C5. The disconnector is connected between three phase inputs indicated respectively by A, B, C and three phase outputs indicated respectively by A ', B', C '. Each switch comprises a first fixed contact 1 and a second contact 2 which cooperates with the first contact. The second contact 2 is mobile to occupy a first position according to which it is electrically connected to the fixed contact (see switches C2, C3, C4) and a second position according to which it is separated of the fixed contact (see switches C1 and C5).

Comme visible sur la figure 1, les contacts mobiles 2 des commutateurs C1 et C4 sont reliés électriquement à l'entrée de phase C, les contacts mobiles 2 des commutateurs C2 et OS sont reliés électriquement à l'entrée de phase A et le contact mobile 2 du commutateur C3 est relié à l'entrée de phase B. Par ailleurs, les contacts fixes 1 des commutateurs C1 et C2 sont reliés électriquement à la sortie de phase A', les contacts fixes 1 des commutateurs C4 et OS sont reliés électriquement à la sortie de phase C' et le contact fixe 1 du commutateur C3 est relié électriquement à la sortie de phase B'.As seen in Figure 1, the movable contacts 2 of the switches C1 and C4 are electrically connected to the phase input C, the movable contacts 2 C2 and OS switches are electrically connected to phase A input and the movable contact 2 of the switch C3 is connected to the phase input B. By elsewhere, the fixed contacts 1 of switches C1 and C2 are connected electrically at the phase output A ', the fixed contacts 1 of the switches C4 and OS are electrically connected to the phase output C 'and the fixed contact 1 of the switch C3 is electrically connected to phase output B '.

Le fonctionnement de ce sectionneur à usage d'inverseur de phases est résumé dans le tableau de la figure 2. Selon une première position E1 du sectionneur, les commutateurs C1 et C5 sont ouverts (ces commutateurs étant dans la position indiquée par O) et les commutateurs C2 à C4 sont fermés (ces commutateurs étant dans la position indiquée par F). Selon cette position, l'entrée de phase A est reliée électriquement à la sortie de phase A', l'entrée de phase B est reliée électriquement à la sortie de phase B' et l'entrée de phase C est reliée électriquement à la sortie de phase C'. Selon une seconde position EO du sectionneur, les commutateurs C1 à C5 sont tous ouverts. Selon cette position, les entrées du sectionneur sont toutes séparées de ses sorties. Selon enfin une troisième position E2 du sectionneur, les commutateurs C1,C3 et C5 sont fermés et les commutateurs C2 et C4 sont ouverts. Selon cette position, l'entrée de phase C est reliée électriquement à la sortie de phase A', l'entrée de phase B est reliée électriquement à la sortie de phase B' et l'entrée de phase A est reliée électriquement à la sortie de phase C'. Il en résulte une inversion des phases A et C en sortie du sectionneur par rapport à la position E1 du sectionneur.The operation of this disconnector for phase inverter is summarized in the table of FIG. 2. According to a first position E1 of the disconnector, switches C1 and C5 are open (these switches being in the position indicated by O) and the switches C2 to C4 are closed (these switches being in the position indicated by F). According to this position, phase A input is electrically connected to phase output A ', the input of phase B is electrically connected to phase output B 'and phase input C is electrically connected to the phase output C '. According to a second EO position of the disconnector, switches C1 to C5 are all open. According to this position, the inputs of the disconnector are all separated from its outputs. according to finally a third position E2 of the disconnector, switches C1, C3 and C5 are closed and switches C2 and C4 are open. According to this position, phase input C is electrically connected to phase output A ', the input of phase B is electrically connected to phase output B 'and phase input A is electrically connected to the phase output C '. This results in an inversion of the phases A and C at the output of the disconnector with respect to position E1 of the switch.

D'une façon générale, ce sectionneur est prévu pour passer de la position E1 à la position E2 (ou inversement) en passant nécessairement par la position EO, les autres possibilités de connexion entre les entrées et les sorties du sectionneur étant interdites.In general, this disconnector is designed to pass from the position E1 to position E2 (or vice versa) necessarily passing through the EO position, other connection possibilities between inputs and outputs of the disconnector being prohibited.

Le but de l'invention est de proposer un agencement de commutateurs pour un tel sectionneur à usage d'inverseur de phases dans lequel les commutateurs sont commandés par une commande unique tout en évitant les possibilités de connexion interdites.The object of the invention is to propose an arrangement of switches for such a disconnector for phase inverter use in which the switches are controlled by a single command while avoiding connection possibilities prohibited.

On connaít en outre du document de brevet US 5 510 590 un système de commutation électrique comprenant une pluralité de commutateurs dont les contacts mobiles respectifs sont mécaniquement reliés entre eux par l'intermédiaire d'un système d'embiellage qui est actionné par une commande unique. Le système d'embiellage est agencé pour permettre un fonctionnement synchrone de chaque chambre de coupure d'un commutateur avec l'onde de tension, afin que l'instant de commutation coïncide au moins approximativement avec le passage par zéro du signal de tension dans le commutateur. Le système d'embiellage permet donc un décalage des instants de commutations respectifs des commutateurs, décalage qui correspond au déphasage entre les phases respectives du réseau. Pour un réseau triphasé, le système de commutation électrique comprend trois commutateurs. La commande du système d'embiellage est simplement à deux positions, car un actionnement du système d'embiellage doit permettre de commuter le système triphasé depuis un même état ouvert ou fermé jusqu'à l'état inverse. Un tel système de commutation n'est donc pas adapté pour être utilisé comme sectionneur à usage d'inverseur de phases. We also know from US patent document 5,510,590 a system of electrical switching comprising a plurality of switches, the respective moving contacts are mechanically interconnected by via a linkage system which is activated by a control unique. The linkage system is arranged to allow operation synchronous of each switch-off chamber with the wave of voltage, so that the switching instant coincides at least approximately with the zero crossing of the voltage signal in the switch. The system connecting rod assembly therefore allows a shift of the respective switching times switches, offset which corresponds to the phase shift between the phases network. For a three-phase network, the switching system electric includes three switches. Control of the crankshaft system is simply in two positions, because an actuation of the connecting rod system must allow the three-phase system to be switched from the same open state or closed until reverse state. Such a switching system is therefore not suitable for use as a disconnector for phase inverter use.

Pour réaliser l'objectif de l'invention, la demanderesse a cherché à transformer un tel système de commutation à commande unique pour obtenir un sectionneur à usage d'inverseur de phases pour un réseau triphasé, sachant que l'inversion de deux phases s'opère nécessairement en passant par une position intermédiaire d'ouverture de tous les commutateurs du système.To achieve the objective of the invention, the applicant sought to transform such a single control switching system to get a disconnector for phase inverter use for a three-phase network, knowing that two phases are inverted necessarily by passing through a position intermediate opening of all switches in the system.

Selon l'invention, ce problème est résolu à l'aide d'un sectionneur électrique comprenant une pluralité de commutateurs électriques qui comportent chacun un premier contact fixe et un second contact mobile coopérant avec le contact fixe, ce second contact étant agencé pour se déplacer par un mouvement en translation selon une direction longitudinale entre une première position dans laquelle il est relié au contact fixe et une seconde position dans laquelle il est séparé du contact fixe, le déplacement du second contact étant assuré par le jeu d'une paire de leviers articulés entre eux en rotation, une extrémité du premier levier étant reliée au second contact par l'intermédiaire d'un axe de rotation mobile en translation selon ladite direction longitudinale, une extrémité du second levier étant montée en rotation sur un axe fixe par rapport au premier contact, un système d'embiellage comprenant des troisièmes leviers solidaires respectivement en rotation des seconds leviers, ce système d'embiellage comprenant aussi un ensemble de bielles de commande articulées en rotation aux troisièmes leviers et reliées entre elles les unes à la suite des autres afin de relier le second levier de chaque commutateur à une commande unique dudit système d'embiellage, l'une de ces bielles étant reliée à ladite commande par l'intermédiaire d'un quatrième levier, caractérisé en ce que lesdits commutateurs électriques sont au nombre de cinq et ladite commande du système d'embiellage est à trois positions, et en ce que pour une première position du système d'embiellage, les contacts mobiles des cinq commutateurs sont tous séparés des contacts fixes, pour une seconde position du système d'embiellage, les contacts mobiles de deux commutateurs électriques sont séparés de leurs contacts fixes respectifs et les contacts mobiles des trois autres commutateurs électriques sont reliés à leurs contacts fixes respectifs, et pour une troisième position du système d'embiellage, les contacts mobiles de ces deux premiers commutateurs électriques et le contact mobile d'un des trois autres commutateurs électriques sont reliés à leurs contacts fixes respectifs tandis que les contacts mobiles des deux autres commutateurs électriques sont séparés de leurs contacts fixes respectifs.According to the invention, this problem is solved using a disconnector electric comprising a plurality of electric switches which include each a first fixed contact and a second mobile contact cooperating with the fixed contact, this second contact being arranged to move by a movement in translation in a longitudinal direction between a first position in which it is connected to the fixed contact and a second position in which it is separate from the fixed contact, the movement of the second contact being ensured by the play a pair of levers hinged together in rotation, one end of the first lever being connected to the second contact via an axis of rotation movable in translation in said longitudinal direction, one end of the second lever being mounted in rotation on a fixed axis relative to the first contact, a connecting rod system comprising third integral levers respectively in rotation of the second levers, this linkage system also comprising a set of control rods articulated in rotation to the third levers and interconnected one after the other in order to connect the second lever of each switch to a single control of said connecting rod system, one of these connecting rods being connected to said control by via a fourth lever, characterized in that said switches are five in number and said linkage system control is in three positions, and in that for a first position of the system the moving contacts of the five switches are all separated from the fixed contacts, for a second position of the linkage system, the contacts two electric switches are separated from their fixed contacts respective and the moving contacts of the other three electrical switches are connected to their respective fixed contacts, and for a third position of the system crankshaft, the movable contacts of these first two switches electrical contacts and the moving contact of one of the other three electrical switches are connected to their respective fixed contacts while the movable contacts of two other electrical switches are separated from their fixed contacts respectively.

Comme cela apparaítra par la suite, un tel agencement de commutateur permet de concevoir un sectionneur à cinq commutateurs fonctionnant comme inverseur de phases avec une seule commande à trois positions et un système d'embiellage reliant les seconds leviers des commutateurs à la commande, par un choix judicieux du rapport entre la cinématique d'embiellage et la cinématique interne des commutateurs électriques.As will appear later, such a switch arrangement allows to design a disconnector with five switches functioning as phase reverser with a single three-position control and a system connecting rod connecting the second levers of the switches to the control, by a judicious choice of the ratio between the linkage kinematics and the kinematics internal electrical switches.

D'autres caractéristiques et avantages apparaítront encore mieux à la lecture de la description qui suit d'un exemple de réalisation de l'invention en relation avec les dessins. Other characteristics and advantages will appear even better on reading of the description which follows of an exemplary embodiment of the invention in relationship with the drawings.

La figure 1 est une représentation très schématique d'un sectionneur comportant cinq commutateurs et servant comme inverseur de phases.Figure 1 is a very schematic representation of a disconnector comprising five switches and serving as a phase inverter.

La figure 2 résume sous la forme d'un tableau, le fonctionnement d'un tel sectionneur inverseur de phases.Figure 2 summarizes in the form of a table, the operation of such phase reversing disconnector.

La figure 3 montre de manière schématique un sectionneur à cinq commutateurs selon l'invention dans une première position correspondant à la position E1 du tableau de la figure 2.Figure 3 shows schematically a disconnector with five switches according to the invention in a first position corresponding to the position E1 of the table in FIG. 2.

La figure 4 montre le sectionneur de la figure 3 dans une seconde position correspondant à la position E0 du tableau de la figure 2.Figure 4 shows the disconnector of Figure 3 in a second position corresponding to position E0 of the table in FIG. 2.

La figure 5 montre le sectionneur de la figure 3 dans une troisième position correspondant à la position E2 du tableau de la figure 2.Figure 5 shows the disconnector of Figure 3 in a third position corresponding to position E2 of the table in FIG. 2.

La figure 3 montre de façon schématique cinq commutateurs C1 à C5 selon l'invention qui font partie d'un sectionneur dit pentapolaire servant comme inverseur de phases, analogue à celui montré sur la figure 1, les entrées et les sorties correspondant aux phases A à C et A' à C' n'étant toutefois pas représentéesFigure 3 shows schematically five switches C1 to C5 according to the invention which form part of a so-called pentapole disconnector serving as phase inverter, similar to that shown in Figure 1, the inputs and the outputs corresponding to phases A to C and A 'to C' are however not represented

Chaque commutateur tel que C1 comprend un contact 1 fixe et un contact 2 qui est mobile pour occuper une première position selon laquelle il est relié au contact fixe 1 (position de fermeture F du commutateur) et une seconde position selon laquelle il est séparé du contact fixe 1 (position d'ouverture O du commutateur).Each switch such as C1 includes a fixed contact 1 and a contact 2 which is movable to occupy a first position according to which it is connected to fixed contact 1 (closing position F of the switch) and a second position according to which it is separated from fixed contact 1 (opening position O of the switch).

Le contact mobile 2 se déplace entre ces deux positions par un mouvement en translation suivant une direction de déplacement longitudinale indiquée par 3The movable contact 2 moves between these two positions by a translational movement in a longitudinal direction of movement indicated by 3

Le déplacement en translation suivant la direction 3 du contact mobile 2 est assuré par le jeu d'une paire de leviers L1 et L2. Plus particulièrement, le levier L1 a une extrémité qui est reliée au contact 2 par l'intermédiaire d'un axe A1 de rotation mobile en translation selon la direction longitudinale 3. Les leviers L1 et L2 sont articulés entre eux en rotation autour d'un axe A2. Le levier L2 a une extrémité qui est montée à rotation sur un axe A3 fixe par rapport au contact 1. Ainsi, le déplacement angulaire relatif entre les leviers L1 et L2 est transformé en un déplacement en translation du contact mobile 2, le choix de la longueur des leviers L1 et L2 et du déplacement angulaire relatif entre ces deux leviers permettant de régler la course du contact mobile.The translational movement in the direction 3 of the movable contact 2 is ensured by the play of a pair of levers L1 and L2. More specifically, the lever L1 has one end which is connected to contact 2 via an axis A1 of rotation mobile in translation in the longitudinal direction 3. The levers L1 and L2 are hinged together in rotation about an axis A2. The lever L2 has one end which is rotatably mounted on an axis A3 fixed relative to the contact 1. Thus, the relative angular displacement between the levers L1 and L2 is transformed in a translational movement of the movable contact 2, the choice of the length levers L1 and L2 and the relative angular displacement between these two levers for adjusting the stroke of the movable contact.

Figures 3 à 5, un sectionneur selon l'invention à cinq commutateurs électriques servant d'inverseur de phases comprend une commande unique à tire-pousse à trois positions 4 reliée mécaniquement aux commutateurs par l'intermédiaire d'un système d'embiellage 5.Figures 3 to 5, a disconnector according to the invention with five switches electrics used as phase reverser includes a single control three-position rickshaw 4 mechanically connected to the switches by through a linkage system 5.

La commande à trois positions 4 est ici un moteur électrique dont le rotor A4 sert d'organe de transmission de mouvement au système d'embiellage.The three-position control 4 is here an electric motor whose rotor A4 serves as a movement transmission device for the linkage system.

Le système d'embiellage 5 comprend, pour chaque commutateur C1,C2,C4 et C5, un levier L3 solidaire en rotation du levier L2 de chaque commutateur et pour le commutateur C3 un levier L4 solidaire en rotation du levier L2 de ce commutateur.The connecting rod system 5 comprises, for each switch C1, C2, C4 and C5, a lever L3 integral in rotation with the lever L2 of each switch and for switch C3 a lever L4 integral in rotation with the lever L2 of this switch.

Il comprend encore un ensemble de bielles de commande L5 articulées en rotation les unes à la suite des autres et aux leviers L3 et L4. Une de ces bielles L5 est reliée à la commande 4 par l'intermédiaire d'un levier L6 solidaire du rotor A4 de la commande 4.It also includes a set of articulated L5 control rods in rotation one after the other and to the levers L3 and L4. One of these connecting rods L5 is connected to control 4 by means of an integral L6 lever of the rotor A4 of the control 4.

Le fonctionnement du système d'embiellage 5 est le suivant. Quand le rotor A4 de la commande 4 tourne d'un certain angle, le levier L6 déplace en translation la bielle de commande L5 à laquelle il est relié. Le déplacement de ce levier L5 est transformé en un déplacement angulaire du levier L3 associé au commutateur C5. Il en résulte un déplacement angulaire du levier L2 solidaire de ce levier L3 et donc un déplacement en translation du contact mobile 2 du commutateur C5. Par ailleurs, le déplacement en translation de cette bielle de commande L5 provoque le déplacement en translation de la bielle de commande L5 associée au commutateur C4, entraínant le déplacement en translation du contact mobile 2 de ce commutateur C4, et ainsi de suite pour les autres commutateurs C3 à C1. Ainsi, le déplacement en translation des bielles de commande L5 est transformé par les leviers L3 et L4 en un déplacement angulaire des leviers L1 et L2 de chaque commutateur C1 à C5 qui se transforme à son tour en un déplacement en translation des contacts mobiles 2 des commutateurs C1 à C5.The operation of the linkage system 5 is as follows. When the rotor A4 of control 4 turns by a certain angle, lever L6 moves in translation the control rod L5 to which it is connected. The displacement of this lever L5 is transformed into an angular displacement of lever L3 associated with switch C5. This results in an angular displacement of the lever L2 integral with this lever L3 and therefore a translational movement of the movable contact 2 of the switch C5. Furthermore, the translational movement of this connecting rod command L5 causes the translational movement of the control rod L5 associated with switch C4, causing the translational movement of the movable contact 2 of this switch C4, and so on for the others switches C3 to C1. Thus, the displacement in translation of the connecting rods command L5 is transformed by the levers L3 and L4 in a displacement angle of the levers L1 and L2 of each switch C1 to C5 which in turn transforms the moving contacts 2 into translation switches C1 to C5.

L'obtention des positions E1,E0,E2 du sectionneur conformément au tableau de la figure 2 repose sur le rapport de la cinématique d'embiellage et la cinématique interne des commutateurs, les longueurs des bielles de commande L5 n'ayant pas d'influence sur le fonctionnement du sectionneur.Obtaining positions E1, E0, E2 of the disconnector in accordance with table in Figure 2 is based on the ratio of the linkage kinematics and the internal kinematics of the switches, the lengths of the control rods L5 having no influence on the operation of the disconnector.

Plus particulièrement, pour réaliser la succession des positions fermées et ouvertes, d'une part des commutateurs C1, C2, C4, et C5, et d'autre part, du commutateur C3, les leviers L1 et L2 ce chaque commutateur étant identiques, il faut que, lors d'un changement de position du sectionneur, par exemple lors du changement de la position E1 à la position E0, le levier L2 des commutateurs C1, C2, C4 et C5 tourne d'un angle α et que le levier L2 du commutateur C3 tourne simultanément d'un angle β tel que β vérifie la relation 3α = 2β. Ceci est obtenu simplement par une construction des leviers L3 et L4 telle que la longueur I du levier L4 et la longueur L d'un levier L3 vérifient la relation suivante : L*sinus(α) = I*sinus(β), c'est-à-dire que L est supérieure à 1.More specifically, to carry out the succession of closed positions and open, on the one hand switches C1, C2, C4, and C5, and on the other hand, switch C3, the levers L1 and L2 this each switch being identical, it when changing the position of the disconnector, for example when change from position E1 to position E0, the lever L2 of the switches C1, C2, C4 and C5 turns by an angle α and that the lever L2 of the switch C3 rotates simultaneously by an angle β such that β satisfies the relation 3α = 2β. this is obtained simply by a construction of the levers L3 and L4 such that the length I of lever L4 and length L of lever L3 verify the relationship next: L * sine (α) = I * sine (β), i.e. L is greater than 1.

Figure 4, le sectionneur est montré dans sa position E0 du tableau de la figure 2. Dans cette position, on voit que tous les contacts mobiles 2 des commutateurs sont séparés des contacts fixes 1. Les leviers L3 et L4 sont ici parallèles entre eux. Les commutateurs C1 et C5 ont leurs leviers L1 et L2 qui occupent une première position angulaire identique. Les leviers L1 et L2 des commutateurs C2 et C4 occupent une seconde position angulaire identique. Les leviers L1 et L2 du commutateur C3 occupent une troisième position angulaire intermédiaire par rapport aux première et seconde positions angulaires ci-dessus. Comme visible sur cette figure, la cinématique des leviers L1 et L2 du commutateur C3 est différente de celle des leviers L1 et L2 des commutateurs C1,C2 et C4,C5. Par ailleurs, la position angulaire des leviers L1 et L2 du commutateur C1 est symétrique, suivant la direction 3, à la position angulaire des leviers L1 et L2 du commutateur C2.Figure 4, the disconnector is shown in its position E0 in the table of the Figure 2. In this position, we see that all the movable contacts 2 of switches are separated from the fixed contacts 1. The levers L3 and L4 are here parallel to each other. The switches C1 and C5 have their levers L1 and L2 which occupy a first identical angular position. The levers L1 and L2 of switches C2 and C4 occupy a second identical angular position. The levers L1 and L2 of switch C3 occupy a third angular position intermediate to the first and second angular positions above. As can be seen in this figure, the kinematics of the levers L1 and L2 of the switch C3 is different from that of levers L1 and L2 of the switches C1, C2 and C4, C5. Furthermore, the angular position of the levers L1 and L2 of the switch C1 is symmetrical, in direction 3, at the angular position of levers L1 and L2 of switch C2.

Figure 3, le levier L6 a tourné selon un premier sens de rotation de 90° par rapport à sa position sur la figure 4. Les leviers L1 et L2 des commutateurs C1 et C5 occupent maintenant ladite seconde position angulaire de sorte que ces commutateurs sont ouverts. Les leviers L2 de ces commutateurs ont tourné dans le sens horaire inverse d'un angle α. Les leviers L2 des commutateurs C2 et C4 ont tourné dans le sens horaire inverse d'un angle α de sorte que ces commutateurs sont aussi dans une position de fermeture. Le levier L2 du commutateur C3 a tourné dans le sens horaire inverse d'un angle β plus grand que α (du fait que la longueur du levier L4 est inférieure à la longueur des leviers L3) de sorte que ce commutateur est en position de fermeture.Figure 3, the lever L6 has rotated in a first direction of rotation of 90 ° relative to its position in Figure 4. The levers L1 and L2 of the switches C1 and C5 now occupy said second angular position so that these switches are open. The L2 levers of these switches have turned clockwise opposite an angle α. The levers L2 of the switches C2 and C4 have rotated counterclockwise by an angle α so that these switches are also in a closed position. The L2 lever of switch C3 has rotated counterclockwise by a larger angle β that α (because the length of the lever L4 is less than the length of the levers L3) so that this switch is in the closed position.

Figure 5, le levier L6 a tourné selon un second sens de rotation de 90° par rapport à sa position sur la figure 4. Les leviers L1 et L2 des commutateurs C2 et C4 occupent maintenant ladite première position angulaire et ces commutateurs sont ouverts. Les leviers L2 de ces commutateurs ont donc tourné dans le sens horaire d'un angle α. Les leviers L2 des commutateurs C1 et C5 ont tourné dans le sens horaire d'un angle α de sorte que ces commutateurs sont en position de fermeture. Le levier L2 du commutateur C3 a tourné dans le sens horaire d'un angle β de sorte que ce commutateur est aussi dans une position de fermeture.Figure 5, the lever L6 has rotated in a second direction of rotation of 90 ° relative to its position in Figure 4. The levers L1 and L2 of the switches C2 and C4 now occupy said first angular position and these switches are open. The L2 levers of these switches have therefore turned clockwise at an angle α. The levers L2 of switches C1 and C5 have turned clockwise by an angle α so these switches are in closed position. The lever L2 of the switch C3 has turned in the direction time of an angle β so that this switch is also in a position of closing.

Ainsi que cela ressort des figures 3 à 5, le passage de la position E0 à la position E1 du sectionneur est obtenu par une première rotation de 90° du rotor de la commande 4 et le passage de la position E0 à la position E2 est obtenu par une seconde rotation de 90° du rotor de la commande 4 mais dans le sens inverse à la première rotation. L'angle de rotation du rotor A4 peut être différent de 90° (par exemple de 30°) mais un angle de 90° permet de garantir une non réversibilité de la transmission de la commande en déplacement. La longueur de la bielle L6 est choisie en fonction de la puissance de la commande 4 et de l'effort à fournir pour déplacer les contacts mobiles 2.As shown in Figures 3 to 5, the transition from position E0 to the position E1 of the disconnector is obtained by a first rotation of 90 ° of the rotor of command 4 and the transition from position E0 to position E2 is obtained by a second 90 ° rotation of the rotor of control 4 but in the direction reverse at the first rotation. The rotation angle of the rotor A4 can be different 90 ° (for example 30 °) but an angle of 90 ° ensures no reversibility of the transmission of the command on the move. The length of the rod L6 is chosen according to the power of the control 4 and the effort required to move the movable contacts 2.

Il est entendu que l'invention n'est pas limitée à l'exemple de réalisation ci-dessus décrit. Par exemple, le système d'embiellage 5 peut être remplacé par un système à engrenages ou par un système à câbles.It is understood that the invention is not limited to the exemplary embodiment above described. For example, the linkage system 5 can be replaced by a gear system or a cable system.

Claims (1)

  1. An electrical isolating switch comprising a plurality of electric switches, each having a first fixed contact (1) and a second mobile contact (2) cooperating with the fixed contact, said second contact (2) being displaced by a translatory movement in a longitudinal direction (3) between a first position (F) in which it is connected to the fixed contact and a second position (0) in which it is separated from the fixed contact, the displacement of the second contact being ensured by the clearance of a pair of levers (L1, L2) articulated with one another in rotation, one end of the first lever (L1) being connected to the second contact by means of a pivot pin (A1) mobile in translation in said longitudinal direction, one end of the second lever (L2) being mounted in rotation on a fixed spindle (A3) relative to the first contact, a linkage system (5) comprising third levers (L3, L4) integral respectively in rotation with the second levers (L2), said linkage system (5) also comprising a group of control rods (L5) articulated in rotation to the third levers (L3, L4) and interconnected following on to the others in order to connect the second lever (L2) of each switch to a single control of the linkage system (5), one of said rods (L5) being connected to said control (4) by means of a fourth lever (L6), characterized in that there are five such electric switches (C1, C5) and said control (4) of the linkage system (5) has three positions and in that for a first position (E1) of the linkage system (5), the mobile contacts (2) of the five switches (C1 to C5) are all separated from the fixed contacts (1), for a second position (E0) of the linkage system, the mobile contacts (2) of the two electric switches are separated from their respective fixed contacts (1) and the mobile contacts (2) of the three other electrical switches (C2, C3,' C4) are connected to their respective fixed contacts, and for a third position (E2) of the linkage system, the mobile contacts (2) of the first two electrical switches (C1, C5) and the mobile contact of one (C3) of the three other electrical switches are connected to their respective fixed contacts (1), whilst the mobile contacts (2) of the two other electrical switches (C2, C4) are separated from their respective fixed contacts (1).
EP98400458A 1997-02-27 1998-02-26 Disconnecting switch with five poles for phase inverter use Expired - Lifetime EP0863524B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9702349 1997-02-27
FR9702349A FR2760125B1 (en) 1997-02-27 1997-02-27 SWITCH FOR FIVE-POLE DISCONNECTOR FOR PHASE INVERTER USE

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EP0863524A1 EP0863524A1 (en) 1998-09-09
EP0863524B1 true EP0863524B1 (en) 2004-07-21

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EP98400458A Expired - Lifetime EP0863524B1 (en) 1997-02-27 1998-02-26 Disconnecting switch with five poles for phase inverter use

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EP (1) EP0863524B1 (en)
AT (1) ATE271714T1 (en)
CA (1) CA2228662C (en)
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FR (1) FR2760125B1 (en)

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ATE271714T1 (en) 2004-08-15
CA2228662C (en) 2004-06-15
DE69825091D1 (en) 2004-08-26
CA2228662A1 (en) 1998-08-27
EP0863524A1 (en) 1998-09-09
FR2760125A1 (en) 1998-08-28
DE69825091T2 (en) 2005-07-28
FR2760125B1 (en) 2003-08-22
US5936213A (en) 1999-08-10

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