EP0417015A1 - Control mechanism of a high tension multipolar switch - Google Patents

Control mechanism of a high tension multipolar switch Download PDF

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Publication number
EP0417015A1
EP0417015A1 EP90420379A EP90420379A EP0417015A1 EP 0417015 A1 EP0417015 A1 EP 0417015A1 EP 90420379 A EP90420379 A EP 90420379A EP 90420379 A EP90420379 A EP 90420379A EP 0417015 A1 EP0417015 A1 EP 0417015A1
Authority
EP
European Patent Office
Prior art keywords
crank
control
shaft
switch
control mechanism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90420379A
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German (de)
French (fr)
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EP0417015B1 (en
Inventor
Robert Micoud
Michel Berne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric SE
Original Assignee
Merlin Gerin SA
Schneider Electric SE
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Filing date
Publication date
Application filed by Merlin Gerin SA, Schneider Electric SE filed Critical Merlin Gerin SA
Publication of EP0417015A1 publication Critical patent/EP0417015A1/en
Application granted granted Critical
Publication of EP0417015B1 publication Critical patent/EP0417015B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/022—Details particular to three-phase circuit breakers

Definitions

  • the invention relates to a control mechanism for a high-voltage multi-pole electric switch or circuit breaker capable of occupying a first closed position, and a second position for opening the contacts, said mechanism comprising:
  • a toggle energy storage device composed of a cocking handle articulated by an axis to a telescopic guide for supporting a compression spring
  • a first control crank mounted on an arming shaft, and coupled by a transmission rod to a second control crank, which is wedged on an actuating shaft of the switch,
  • crank arm to cause the crossing of dead center of the toggle during the passage of the mechanism from the first position to the second position, and vice versa.
  • the documents FR-A- 2.500.222 and 2.613.123 disclose tumbler-type control mechanisms for a switch with three positions, one of which is a grounding position.
  • An auxiliary lock for locking the control crank is activated during the arming operation of the energy storage spring. This blocking function is essential so as not to disturb the state of the switch during compression of the spring.
  • These known mechanisms are relatively complicated by the presence of the auxiliary locking bolt.
  • the object of the invention is to provide a simple and reliable control mechanism for a high voltage switch or circuit breaker.
  • the mechanism according to the invention is characterized in that the cocking crank is mounted loosely on the cocking shaft by cooperating with stoppers for driving the first control crank, only opposite to the axis of the toggle joint, the telescopic guide of the spring bears on a crank pin located on the second control crank, to generate during the arming operation of the spring a temporary holding torque of the first and second cranks, which are kept in their initial state until the toggle joint breaks, and the control means for the cocking crank comprise a transmission mechanism controlled either automatically by a geared motor unit, or manually by a shaft coupled to an emergency control by a rod .
  • the transmission mechanism is connected to the gearmotor block by a kinematic link, arranged to authorize automatic operations by the gearmotor unit without reaction on the shaft of the emergency control, and conversely manual operation by the shaft of the emergency control without causing forced rotation of the output shaft of the geared motor unit.
  • a cam is mounted on the shaft of the emergency control unit intended to cooperate with a microswitch device to interrupt the electrical orders transmitted to the geared motor unit in the event of manual actuation of the rod of the emergency control unit.
  • This control mechanism is particularly suitable for a three-phase switch on the pole of an overhead electrical network.
  • Figure 1 shows a three-phase electrical device, in particular a switch 10 or a circuit breaker, mounted on a pole 12 of a high voltage overhead electrical network.
  • a system of spacers 14, 16 integral with the top of the post 12 serves as a support for two adjacent sections of line conductors 18R, 18S, 18T; 20R, 20S, 20T of the network, with maintenance of a predetermined inter-phase spacing.
  • the electrical isolation with the spacers 14, 16 and the pole 12 is provided by line insulators 22.
  • the pole 12 is at ground potential.
  • the transformer 26 is connected directly to two phases of the network, and is used for the power supply of a geared motor, and of the measurement and transmission electronics.
  • Each arrester 28 is equipped at its upper part with a connection terminal 30, connected respectively to a line conductor 18R, 18S, 18T; 20R, 20S, 20T corresponding from the network by an electrical connection cable 32, and to a connection terminal 34R, 34S, 34T; 36R, 36S, 36T of the switch 10 by a cable 38 provided with a plug-in socket.
  • the cutting or electrical continuity between the adjacent sections of the conductors 18R, 18S, 18T; 20R, 20S, 20T is provided by switch 10.
  • the main mechanism 40 for controlling the switch 10 is placed directly under the switch 10, and is controlled either automatically by an integrated gear motor, or manually by a rod 42 which can be operated from an emergency control 44 located at the bottom of the post 12.
  • the main mechanism 40 is provided with a double tumbler device 46 (FIGS. 2 to 4) housed between two fixed flanges 48, 50, and comprising a first control crank 52 articulated by a connecting rod 54 for transmission to a second crank 56 control wedged on the actuating shaft 58 of the switch 10.
  • the first crank 52 is mounted on an arming shaft 60 extending parallel to the actuating shaft 58 between the two flanges 48, 50.
  • the two axes 61, 62 of articulation of the connecting rod 54 on the cranks 52, 56 are eccentric relative to the corresponding shafts 60, 58.
  • the double tumbler device 46 is associated with a device energy accumulator 64 comprising a toggle 65 composed of a crank 66 for arming articulated by an axis 68 to a telescopic guide 70 for supporting a compression spring 72.
  • the cocking crank 66 is mounted coaxially proficient on the cocking shaft 60, and can cooperate with two tabs 74, 76 fixed on the first crank 52.
  • the telescopic guide 70 of the spring 72 bears on a crankpin 78 of the second control crank 56.
  • a first closure end stop 80 and a second opening end stop 82 cooperate respectively with stop surfaces 84, 86 of the first and second control cranks 52, 56, when the mechanism 40 actuates the 'switch 10 in closed and open positions.
  • the cocking crank 66 is controlled by a transmission mechanism 88 (fig. 5) capable of being driven, either by a geared motor unit 90 (fig. 7), or by an auxiliary crank 92 mounted on a maneuvering shaft 94 mechanically coupled to the rod 42 of the emergency control 44.
  • the actuating shaft 94 passes through orifices 95 formed in the flanges 48, 50.
  • the transmission mechanism 88 comprises a transmission crank 96 mounted coaxially idle on the shaft 94 of the manual emergency control 44.
  • the transmission crank 96 is provided with an oblong opening 98 centered on the shaft 94. Inside the opening 98 is housed a first drive pin 100 attached to the auxiliary crank 92.
  • the transmission crank 96 is articulated by a connecting rod 102 to a drive crank 104 having an oblong opening 106, inside which is housed a second lug 108 training.
  • the latter is fixed to a coupling crank 110 mounted on the cocking shaft 60, and coupled to the cocking crank 66.
  • the transmission mechanism 88 is coupled to the crank 66 for arming the double tumbler device 46 of FIG. 4, shown in the closed position of the switch 10.
  • the gearmotor block 90 comprises a motor and speed reducer assembly 112, the output shaft 114 of which is provided with a lug 116 capable of driving a control crank 118 mounted idle on the shaft 114 during a half-turn.
  • the crank 118 comprises two notches 120, 122 diametrically opposite and cooperating alternately with a locking pawl 124.
  • the output shaft 114 of the gear motor 90 always rotates in the same direction (represented in FIG. 7 by the opposite direction of the needles). a watch), for remote control operations at closing and opening.
  • the crank 118 is articulated to a transmission rod 126 having a coupling axis 128 capable of being introduced into an orifice 130 in the transmission crank 96.
  • FIG. 9 represents the mechanism 40 completely assembled, with housing of the output shaft 114 of the geared motor unit 90 in a notch 132 of the flanges 48, 50.
  • a cam 136 integral with the shaft 94 of the manual emergency control 44 cooperates with a microswitch device 138 to signal and interrupt the electrical orders sent to the geared motor unit 90 as soon as the emergency link 42 is operated from the remote control position to a manual control position (opening or closing).
  • FIG. 10 it can be seen that the terminals 36S, 36R, 36T on the left of the switch 10 are in electrical connection with the fixed contacts 140 of the three poles, and that the terminals 34S, 34R, 34T on the right are connected by a braid 142 to contacts mobiles 144 correspondents.
  • a lifting beam 146 is mounted for rotation about an axis 148 extending perpendicularly to the movable contacts 144, and is coupled to the shaft 58 for actuating the mechanism 40 by means of a coupling crank 149.
  • Each contact movable 144 in the form of a pin is coupled to a crank 150 of the spreader 146, so as to transform the rotational movement of the spreader 146 into a translational movement of the movable contact 144.
  • the spreader 146 passes through the sealed tank 152 of the switch 10 insulated with SF6, with interposition of a dynamic seal 154.
  • the operation of the mechanism 40 for controlling the switch 10 is as follows:
  • the closing operation of the switch 10 is effected by rotation of the arming crank 66 anticlockwise (see arrow F, fig. 3) via the transmission mechanism 88 actuated either manually by the shaft 94 of the emergency control 44, or automatically by remote control of the gearmotor block 90.
  • the displacement of the crank arm 66 causes progressive compression of the spring 72 on its telescopic guide 70, up to a maximum value located in the closing neutral shift position in fig. 3.
  • the action of the spring 72 on the second control crank 56 generates a holding torque which urges the crank 56 against the second stop 82 during the arming operation of the spring 72.
  • the switch 10 remains in its position opening during time arming, without the cranks 56, 52 are not positively locked by additional attachment means.
  • the closing and opening orders are sent directly to the geared motor unit 90.
  • Block tree 114 gearmotor 90 always rotates anti-clockwise for closing and opening operations.
  • the cam 136 integral with the shaft 94 causes the switching of the microswitch device 138 to interrupt the electrical orders transmitted to the gearmotor block 90, as soon as the rod 42 leaves the remote control position.
  • the crazy mounting on a half-turn of the crank 118 of the output of the geared motor block 90 allows the operation of the shaft 94 by the manual emergency control 44 without causing a forced rotation of the output shaft 114 of the motor assembly and speed reducer 112. This state is shown in FIG. 8, in which the output shaft 114 of the gearmotor block 90 is still in the closed position, while the transmission connecting rod 126 has been actuated towards the position of opening by the transmission crank 96, following a manual opening by the emergency control 44.

Landscapes

  • Transmission Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Toys (AREA)
  • Rehabilitation Tools (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Mechanical Control Devices (AREA)
  • Electronic Switches (AREA)

Abstract

A control mechanism (40) of a high tension switch comprises a first control crank (52) coupled via a transmission rod (54) to a second control crank (56) which is locked onto a shaft (58) for actuating the switch. A toggle (65) made up of a setting crank (66) hinged to a telescopic guide (70) for supporting an energy-accumulating spring (72) co-operates with the two control cranks (52, 56) to constitute a latchless dual-tumbler mechanism. The setting crank (66) is entrained by a transmission mechanism (88) driven either automatically by a reduction gear motor unit (90) or manually by a shaft (94) of a backup control (44). <IMAGE>

Description

L'invention est relative à un mécanisme de commande pour un interrupteur ou disjoncteur électrique multipolaire à haute tension susceptible d'occuper une première position de fermeture, et une deuxième position d'ouverture des contacts, ledit mécanisme comportant :
The invention relates to a control mechanism for a high-voltage multi-pole electric switch or circuit breaker capable of occupying a first closed position, and a second position for opening the contacts, said mechanism comprising:

- un dispositif accumulateur d'énergie à genouillère composée d'une manivelle d'armement articulée par un axe à un guide télescopique de support d'un ressort de compression,
- a toggle energy storage device composed of a cocking handle articulated by an axis to a telescopic guide for supporting a compression spring,

- une première manivelle de commande montée sur un arbre d'armement, et accouplée par une bielle de transmission à une deuxième manivelle de commande, laquelle est calée sur un arbre d'actionnement de l'interrupteur,
a first control crank mounted on an arming shaft, and coupled by a transmission rod to a second control crank, which is wedged on an actuating shaft of the switch,

- et des moyens de commande de la manivelle d'armement pour provoquer le franchissement de point mort de la genouillère lors du passage du mécanisme de la première position vers la deuxième position, et vice versa.- And control means of the crank arm to cause the crossing of dead center of the toggle during the passage of the mechanism from the first position to the second position, and vice versa.

Les documents FR-A- 2.500.222 et 2.613.123 font connaître des mécanismes de commande du genre tumbler pour un interrupteur a trois positions, dont une position de mise à la terre. Un verrou auxiliaire de blocage de la manivelle de commande est rendu actif durant l'opération d'armement du ressort accumulateur d'énergie. Cette fonction de blocage est indispensable pour ne pas pertuber l'état de l'interrupteur pendant la compression du ressort. Ces mécanismes connus sont relativement compliqués de par la présence du verrou auxiliaire de blocage.The documents FR-A- 2.500.222 and 2.613.123 disclose tumbler-type control mechanisms for a switch with three positions, one of which is a grounding position. An auxiliary lock for locking the control crank is activated during the arming operation of the energy storage spring. This blocking function is essential so as not to disturb the state of the switch during compression of the spring. These known mechanisms are relatively complicated by the presence of the auxiliary locking bolt.

L'objet de l'invention consiste à réaliser un mécanisme de commande simple et fiable pour un interrupteur ou disjoncteur à haute tension.The object of the invention is to provide a simple and reliable control mechanism for a high voltage switch or circuit breaker.

Le mécanisme selon l'invention est caractérisé en ce que la manivelle d'armement est montée folle sur l'arbre d'armement en coopérant avec des taquets d'entraînement de la première manivelle de commande, qu'à l'opposé de l'axe de la genouillère, le guide télescopique du ressort prend appui sur un maneton situé sur la deuxième manivelle de commande, pour engendrer durant l'opération d'armement du ressort un couple de maintien temporaire des première et deuxième manivelles, lesquelles sont maintenues dans leur état initial jusqu'à la brisure de la genouillère, et que les moyens de commande de la manivelle d'armement comportent un mécanisme de transmission piloté soit automatiquement par un bloc motoréducteur, soit manuellement par un arbre accouplé à une commande de secours par une tringle.The mechanism according to the invention is characterized in that the cocking crank is mounted loosely on the cocking shaft by cooperating with stoppers for driving the first control crank, only opposite to the axis of the toggle joint, the telescopic guide of the spring bears on a crank pin located on the second control crank, to generate during the arming operation of the spring a temporary holding torque of the first and second cranks, which are kept in their initial state until the toggle joint breaks, and the control means for the cocking crank comprise a transmission mechanism controlled either automatically by a geared motor unit, or manually by a shaft coupled to an emergency control by a rod .

La présence du couple de maintien temporaire durant l'armement du ressort résulte du positionnement relatif de la genouillère par rapport à la deuxième manivelle de commande, et évite l'usage de verrous ou d'accrochages supplémentaires.The presence of the temporary holding torque during the arming of the spring results from the relative positioning of the toggle lever relative to the second control crank, and avoids the use of latches or additional hooking.

Le mécanisme de transmission est relié au bloc motoréducteur par une liaison cinématique, agencée pour autoriser les manoeuvres automatiques par le bloc motoréducteur sans réaction sur l'arbre de la commande de secours, et réciproquement une manoeuvre manuelle par l'arbre de la commande de secours sans provoquer de rotation forcée de l'arbre de sortie du bloc motoréducteur.The transmission mechanism is connected to the gearmotor block by a kinematic link, arranged to authorize automatic operations by the gearmotor unit without reaction on the shaft of the emergency control, and conversely manual operation by the shaft of the emergency control without causing forced rotation of the output shaft of the geared motor unit.

Sur l'arbre de la commande de secours est montée une came destinée à coopérer avec un dispositif à microrupteurs pour interrompre les ordres électriques transmis au bloc motoréducteur en cas d'actionnement manuel de la tringle de la commande de secours.A cam is mounted on the shaft of the emergency control unit intended to cooperate with a microswitch device to interrupt the electrical orders transmitted to the geared motor unit in the event of manual actuation of the rod of the emergency control unit.

Ce mécanisme de commande est particulièrement adapté à un interrupteur triphasé sur poteau d'un réseau électrique aérien.This control mechanism is particularly suitable for a three-phase switch on the pole of an overhead electrical network.

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode de réalisation de l'invention, donné à titre d'exemple non limitatif, et représenté aux dessins annexés, dans lesquels :

  • - la figure 1 montre une vue en perspective d'un poste aérien à interrupteur triphasé équipé du mécanisme de commande selon l'invention ;
  • - les figures 2 à 4 représentent le dispositif à double tumbler du mécanisme, respectivement dans la position d'ouverture, dans une position intermédiaire au passage de point mort fermeture, et dans la position de fermeture ;
  • - la figure 5 est une vue du mécanisme de transmission équipé de l'arbre de la commande de secours ;
  • - la figure 6 montre l'assemblage du mécanisme de transmission de la figure 5 au dispositif à double tumbler de la figure 4 ;
  • - les figures 7 et 8 représentent le bloc motoréducteur avant et après actionnement de la commande de secours ;
  • - la figure 9 montre le mécanisme complet en position de fermeture ;
  • - la figure 10 est une vue en coupe selon la ligne XX de l'interrupteur et du mécanisme selon la figure 1.
Other advantages and features will emerge more clearly from the description which follows of an embodiment of the invention, given by way of nonlimiting example, and represented in the appended drawings, in which:
  • - Figure 1 shows a perspective view of an aerial post with three-phase switch equipped with the control mechanism according to the invention;
  • - Figures 2 to 4 show the double tumbler device of the mechanism, respectively in the open position, in an intermediate position when passing from neutral to closed, and in the closed position;
  • - Figure 5 is a view of the transmission mechanism fitted with the shaft of the emergency control;
  • - Figure 6 shows the assembly of the transmission mechanism of Figure 5 to the double tumbler device of Figure 4;
  • - Figures 7 and 8 show the geared motor unit before and after actuation of the emergency control;
  • - Figure 9 shows the complete mechanism in the closed position;
  • - Figure 10 is a sectional view along line XX of the switch and the mechanism according to Figure 1.

La figure 1 montre un appareil électrique triphasé, notamment un interrupteur 10 ou un disjoncteur, monté sur un poteau 12 d'un réseau électrique aérien à haute tension. Un système d'entretoises 14, 16 solidaire du sommet du poteau 12, sert de support à deux tronçons adjacents de conducteurs de ligne 18R, 18S, 18T ; 20R, 20S, 20T du réseau, avec maintien d'un écartement inter-phases prédéterminé. L'isolement électrique avec les entretoises 14, 16 et le poteau 12 est assuré par des isolateurs de ligne 22. Le poteau 12 se trouve au potentiel de la terre.Figure 1 shows a three-phase electrical device, in particular a switch 10 or a circuit breaker, mounted on a pole 12 of a high voltage overhead electrical network. A system of spacers 14, 16 integral with the top of the post 12, serves as a support for two adjacent sections of line conductors 18R, 18S, 18T; 20R, 20S, 20T of the network, with maintenance of a predetermined inter-phase spacing. The electrical isolation with the spacers 14, 16 and the pole 12 is provided by line insulators 22. The pole 12 is at ground potential.

Un châssis 24 horizontal fixé au poteau 12 entre le système d'entretoises 14, 16 et l'interrupteur 10, porte un transformateur de potentiel 26, et six parafoudres 28. Le transformateur 26 est raccordé directement à deux phases du réseau, et est utilisé pour l'alimentation d'un motoréducteur, et de l'électronique de mesure et de transmission.A horizontal frame 24 fixed to the pole 12 between the system of spacers 14, 16 and the switch 10, carries a potential transformer 26, and six surge arresters 28. The transformer 26 is connected directly to two phases of the network, and is used for the power supply of a geared motor, and of the measurement and transmission electronics.

Chaque parafoudre 28 est équipé à sa partie supérieure d'une borne 30 de branchement, reliée respectivement à un conducteur de ligne 18R, 18S, 18T; 20R, 20S, 20T correspondant du réseau par un câble 32 de liaison électrique, et à une borne de branchement 34R, 34S, 34T ; 36R, 36S, 36T de l'interrupteur 10 par un câble 38 muni d'une prise embrochable.Each arrester 28 is equipped at its upper part with a connection terminal 30, connected respectively to a line conductor 18R, 18S, 18T; 20R, 20S, 20T corresponding from the network by an electrical connection cable 32, and to a connection terminal 34R, 34S, 34T; 36R, 36S, 36T of the switch 10 by a cable 38 provided with a plug-in socket.

Le sectionnement ou la continuité électrique entre les tronçons adjacents des conducteurs 18R, 18S, 18T ; 20R, 20S, 20T est assuré par l'interrupteur 10.The cutting or electrical continuity between the adjacent sections of the conductors 18R, 18S, 18T; 20R, 20S, 20T is provided by switch 10.

Le mécanisme 40 principal de commande de l'interrupteur 10 est placé directement sous l'interrupteur 10, et est piloté soit automatiquement par un motoréducteur intégré, soit manuellement par une tringle 42 manoeuvrable à partir d'une commande de secours 44 disposée en bas du poteau 12.The main mechanism 40 for controlling the switch 10 is placed directly under the switch 10, and is controlled either automatically by an integrated gear motor, or manually by a rod 42 which can be operated from an emergency control 44 located at the bottom of the post 12.

Le mécanisme 40 principal est doté d'un dispositif à double tumbler 46 (fig. 2 à 4) logé entre deux flasques 48, 50 fixes, et comportant une première manivelle 52 de commande articulée par une bielle 54 de transmission à une deuxième manivelle 56 de commande calée sur l'arbre 58 d'actionnement de l'interrupteur 10. La première manivelle 52 est montée sur un arbre 60 d'armement s'étendant parallèlement à l'arbre 58 d'actionnement entre les deux flasques 48, 50. Les deux axes 61, 62 d'articulation de la bielle 54 sur les manivelles 52, 56 sont excentrés par rapport aux arbres 60, 58 correspondants.The main mechanism 40 is provided with a double tumbler device 46 (FIGS. 2 to 4) housed between two fixed flanges 48, 50, and comprising a first control crank 52 articulated by a connecting rod 54 for transmission to a second crank 56 control wedged on the actuating shaft 58 of the switch 10. The first crank 52 is mounted on an arming shaft 60 extending parallel to the actuating shaft 58 between the two flanges 48, 50. The two axes 61, 62 of articulation of the connecting rod 54 on the cranks 52, 56 are eccentric relative to the corresponding shafts 60, 58.

Le dispositif à double tumbler 46 est associé à un dispositif accumulateur d'énergie 64 comprenant une genouillère 65 composée d'une manivelle 66 d'armement articulée par un axe 68 à un guide téléscopique 70 de support d'un ressort 72 de compression. La manivelle 66 d'armement est montée coaxialement folle sur l'arbre 60 d'armement, et peut coopérer avec deux taquets 74, 76 fixés sur la première manivelle 52.The double tumbler device 46 is associated with a device energy accumulator 64 comprising a toggle 65 composed of a crank 66 for arming articulated by an axis 68 to a telescopic guide 70 for supporting a compression spring 72. The cocking crank 66 is mounted coaxially insane on the cocking shaft 60, and can cooperate with two tabs 74, 76 fixed on the first crank 52.

A l'opposé de l'axe 68, le guide télescopique 70 du ressort 72 prend appui sur un maneton 78 de la deuxième manivelle 56 de commande.Opposite the axis 68, the telescopic guide 70 of the spring 72 bears on a crankpin 78 of the second control crank 56.

Une première butée 80 de fin de course de fermeture et une deuxième butée 82 de fin de course d'ouverture coopèrent respectivement avec des surfaces d'arrêt 84, 86 des première et deuxième manivelles 52, 56 de commande, lorsque le mécanisme 40 actionne l'interrupteur 10 en positions de fermeture et d'ouverture.A first closure end stop 80 and a second opening end stop 82 cooperate respectively with stop surfaces 84, 86 of the first and second control cranks 52, 56, when the mechanism 40 actuates the 'switch 10 in closed and open positions.

La manivelle 66 d'armement est pilotée par un mécanisme de transmission 88 (fig. 5) susceptible d'être entraîné, soit par un bloc motoréducteur 90 (fig. 7), soit par une manivelle 92 auxiliaire montée sur un arbre 94 de manoeuvre accouplé mécaniquement à la tringle 42 de la commande de secours 44. L'arbre 94 de manoeuvre traverse des orifices 95 ménagés dans les flasques 48, 50.The cocking crank 66 is controlled by a transmission mechanism 88 (fig. 5) capable of being driven, either by a geared motor unit 90 (fig. 7), or by an auxiliary crank 92 mounted on a maneuvering shaft 94 mechanically coupled to the rod 42 of the emergency control 44. The actuating shaft 94 passes through orifices 95 formed in the flanges 48, 50.

Sur la figure 5, le mécanisme de transmission 88 comporte une manivelle 96 de transmission montée coaxialement folle sur l'arbre 94 de la commande manuelle de secours 44. La manivelle 96 de transmission est pourvue d'une ouverture 98 oblongue centrée sur l'arbre 94. A l'intérieur de l'ouverture 98 est logé un premier ergot 100 d'entraînement fixé à la manivelle 92 auxiliaire.In FIG. 5, the transmission mechanism 88 comprises a transmission crank 96 mounted coaxially idle on the shaft 94 of the manual emergency control 44. The transmission crank 96 is provided with an oblong opening 98 centered on the shaft 94. Inside the opening 98 is housed a first drive pin 100 attached to the auxiliary crank 92.

La manivelle 96 de transmission est articulée par une bielle 102 à une manivelle 104 d'entraînement ayant une ouverture 106 oblongue, à l'intérieur de laquelle est logé un deuxième ergot 108 d'entraînement. Ce dernier est fixé à une manivelle 110 de couplage montée sur l'arbre 60 d'armement, et accouplée à la manivelle 66 d'armement.The transmission crank 96 is articulated by a connecting rod 102 to a drive crank 104 having an oblong opening 106, inside which is housed a second lug 108 training. The latter is fixed to a coupling crank 110 mounted on the cocking shaft 60, and coupled to the cocking crank 66.

Sur la figure 6, le mécanisme de transmission 88 est accouplé à la manivelle 66 d'armement du dispositif à double tumbler 46 de la fig. 4, représenté en position de fermeture de l'interrupteur 10.In FIG. 6, the transmission mechanism 88 is coupled to the crank 66 for arming the double tumbler device 46 of FIG. 4, shown in the closed position of the switch 10.

Le bloc motoréducteur 90 selon les figures 7 et 8, comporte un ensemble moteur et réducteur de vitesse 112 dont l'arbre de sortie 114 est doté d'un tenon 116 susceptible d'entraîner une manivelle 118 de commande montée folle sur l'arbre 114 durant un demi-tour. La manivelle 118 comporte deux crans 120, 122 diamétralement opposés et coopérant alternativement avec un cliquet de blocage 124. L'arbre de sortie 114 du motoréducteur 90 tourne toujours dans le même sens (représenté sur la figure 7 par le sens inverse des aiguilles d'une montre), pour les opérations de télécommande à la fermeture et à l'ouverture. La manivelle 118 est articulée à une bielle 126 de transmission ayant un axe d'accouplement 128 susceptible d'être introduit dans un orifice 130 de la manivelle 96 de transmission.The gearmotor block 90 according to FIGS. 7 and 8, comprises a motor and speed reducer assembly 112, the output shaft 114 of which is provided with a lug 116 capable of driving a control crank 118 mounted idle on the shaft 114 during a half-turn. The crank 118 comprises two notches 120, 122 diametrically opposite and cooperating alternately with a locking pawl 124. The output shaft 114 of the gear motor 90 always rotates in the same direction (represented in FIG. 7 by the opposite direction of the needles). a watch), for remote control operations at closing and opening. The crank 118 is articulated to a transmission rod 126 having a coupling axis 128 capable of being introduced into an orifice 130 in the transmission crank 96.

La figure 9 représente le mécanisme 40 complètement assemblé, avec logement de l'arbre de sortie 114 du bloc motoréducteur 90 dans une encoche 132 des flasques 48, 50. Une came 136, solidaire de l'arbre 94 de la commande manuelle de secours 44 coopère avec un dispositif à microrupteurs 138 pour signaler et interrompre les ordres électriques envoyés vers le bloc motoréducteur 90 dès que la tringle de secours 42 est manoeuvrée de la position télécommande vers une position commande manuelle (ouverture ou fermeture).FIG. 9 represents the mechanism 40 completely assembled, with housing of the output shaft 114 of the geared motor unit 90 in a notch 132 of the flanges 48, 50. A cam 136, integral with the shaft 94 of the manual emergency control 44 cooperates with a microswitch device 138 to signal and interrupt the electrical orders sent to the geared motor unit 90 as soon as the emergency link 42 is operated from the remote control position to a manual control position (opening or closing).

Sur la figure 10, on remarque que les bornes 36S, 36R, 36T de gauche de l'interrupteur 10 sont en liaison électrique avec les contacts fixes 140 des trois pôles, et que les bornes 34S, 34R, 34T de droite sont reliées par une tresse 142 aux contacts mobiles 144 correspondants. Un palonnier 146 est monté à rotation autour d'un axe 148 s'étendant perpendiculairement au contacts mobiles 144, et est accouplé à l'arbre 58 d'actionnement du mécanisme 40 par l'intermédiaire d'une manivelle de couplage 149. Chaque contact mobile 144 en forme de broche est accouplé à une manivelle 150 du palonnier 146, de manière à transformer le mouvement de rotation du palonnier 146 en un mouvement de translation du contact mobile 144. Le palonnier 146 traverse la cuve 152 étanche de l'interrupteur 10 isolé au SF6, avec interposition d'un joint 154 dynamique d'étanchéité.In FIG. 10, it can be seen that the terminals 36S, 36R, 36T on the left of the switch 10 are in electrical connection with the fixed contacts 140 of the three poles, and that the terminals 34S, 34R, 34T on the right are connected by a braid 142 to contacts mobiles 144 correspondents. A lifting beam 146 is mounted for rotation about an axis 148 extending perpendicularly to the movable contacts 144, and is coupled to the shaft 58 for actuating the mechanism 40 by means of a coupling crank 149. Each contact movable 144 in the form of a pin is coupled to a crank 150 of the spreader 146, so as to transform the rotational movement of the spreader 146 into a translational movement of the movable contact 144. The spreader 146 passes through the sealed tank 152 of the switch 10 insulated with SF6, with interposition of a dynamic seal 154.

Le fonctionnement du mécanisme 40 de commande de l'interrupteur 10 est le suivant :The operation of the mechanism 40 for controlling the switch 10 is as follows:

FONCTIONNEMENT DU DISPOSITIF A DOUBLE TUMBLER 46.OPERATION OF THE DOUBLE TUMBLER DEVICE 46.

Dans la position d'ouverture (fig. 2) la deuxième manivelle 56 de commande du dispositif à double tumbler 46 se trouve en appui contre la deuxième butée 82 de fin de course d'ouverture. Le ressort 72 du dispositif accumulateur d'énergie 64 est détendu. Les contacts 140, 144 de l'interrupteur 10 sont séparés.In the open position (fig. 2) the second crank 56 for controlling the double tumbler device 46 is in abutment against the second stop 82 at the end of the opening stroke. The spring 72 of the energy storage device 64 is relaxed. The contacts 140, 144 of the switch 10 are separated.

L'opération de fermeture de l'interupteur 10 s'opère par rotation de la manivelle 66 d'armement dans le sens inverse des aiguilles d'une montre (voir flèche F, fig. 3) par l'intermédiaire du mécanisme de transmission 88 actionné soit manuellement par l'arbre 94 de la commande de secours 44, soit automatiquement par télécommande du bloc motoréducteur 90. Le déplacement de la manivelle 66 d'armement provoque une compression progressive du ressort 72 sur son guide télescopique 70, jusqu'à une valeur maximum située dans la position de passage de point mort fermeture de la fig. 3. L'action du ressort 72 sur la deuxième manivelle 56 de commande engendre un couple de maintien qui sollicite la manivelle 56 contre la deuxième butée 82 pendant la manoeuvre d'armement du ressort 72. L'interrupteur 10 reste dans sa position d'ouverture pendant le temps d'armement, sans que les manivelles 56, 52 ne soient verrouillées positivement par des moyens d'accrochage additionnels. La rotation poursuivie de la manivelle 66 d'armement dans le sens trigonométrique (flèche F, fig.3), provoque la brisure de la genouillère 65, et la détente du ressort 72. Il en résulte l'entraînement simultané de la première manivelle 52 de commande contre la première butée 80, et de la deuxième manivelle 56 de commande vers la position de fermeture suite à l'action de la bielle 54 (fig. 4,6,9). Dans cette position, les contacts 140, 144 des trois pôles de l'interrupteur 10 sont fermés, et la manivelle 66 d'armement a subi un débattement en rotation d'environ 180 degrés à partir de la position d'ouverture.The closing operation of the switch 10 is effected by rotation of the arming crank 66 anticlockwise (see arrow F, fig. 3) via the transmission mechanism 88 actuated either manually by the shaft 94 of the emergency control 44, or automatically by remote control of the gearmotor block 90. The displacement of the crank arm 66 causes progressive compression of the spring 72 on its telescopic guide 70, up to a maximum value located in the closing neutral shift position in fig. 3. The action of the spring 72 on the second control crank 56 generates a holding torque which urges the crank 56 against the second stop 82 during the arming operation of the spring 72. The switch 10 remains in its position opening during time arming, without the cranks 56, 52 are not positively locked by additional attachment means. The continued rotation of the arming crank 66 in the trigonometric direction (arrow F, fig. 3), causes the toggle 65 to break, and the spring 72 to relax. This results in the simultaneous driving of the first crank 52 control against the first stop 80, and the second crank 56 control to the closed position following the action of the rod 54 (fig. 4,6,9). In this position, the contacts 140, 144 of the three poles of the switch 10 are closed, and the cocking crank 66 has undergone a rotation deflection of approximately 180 degrees from the open position.

L'opération inverse d'ouverture de l'interrupteur 10 s'effectue par rotation de la manivelle 66 d'armement dans le sens des aiguilles d'une montre (voir flèches 0 (fig. 4,6,9). On remarque d'une manière similaire que la première manivelle 52 de commande reste en appui sur la butée 80 jusqu'à la brisure de la genouillère 65. Ce blocage temporaire des manivelles 52, 56 pendant l'armement du ressort 72 est dû au couple de maintien exercé par la force de pression du ressort 72, dont la ligne d'action est décalée par rapport à l'arbre 58 dans la position de point mort.The reverse operation of opening the switch 10 is effected by rotation of the arming handle 66 clockwise (see arrows 0 (fig. 4,6,9). in a similar way that the first control crank 52 remains in abutment on the stop 80 until the toggle joint 65 breaks. This temporary blocking of the cranks 52, 56 during the arming of the spring 72 is due to the holding torque exerted by the pressure force of the spring 72, the line of action of which is offset with respect to the shaft 58 in the neutral position.

ENTRAINEMENT DU MECANISME DE TRANSMISSION 88.DRIVE OF THE TRANSMISSION MECHANISM 88.

Dans le cas de la télécommande, les ordres de fermeture et d'ouverture sont envoyés directement vers le bloc motoréducteur 90.In the case of the remote control, the closing and opening orders are sent directly to the geared motor unit 90.

La présence de l'ouverture 98 oblongue dans la manivelle 96 de transmission autorise les manoeuvres automatiques par le bloc motoréducteur 90, sans aucune réaction forcée sur l'arbre 94 de la commande manuelle de secours, lequel se trouve obligatoirement en position inactive condamné du fait de l'action prioritaire de la télécommande. L'arbre 114 du bloc motoréducteur 90 tourne toujours dans le sens inverse des aiguilles d'une montre pour les manoeuvres de fermeture et d'ouverture.The presence of the oblong opening 98 in the transmission crank 96 authorizes automatic maneuvers by the gearmotor block 90, without any forced reaction on the shaft 94 of the manual emergency control, which is necessarily in the inactive position condemned by the fact priority action of the remote control. Block tree 114 gearmotor 90 always rotates anti-clockwise for closing and opening operations.

Dans le cas d'actionnement de la tringle 42 de la commande manuelle de secours 44, la came 136 solidaire de l'arbre 94 provoque la commutation du dispositif à microrupteurs 138 pour interrompre les ordres électriques transmis au bloc motoréducteur 90, dès que la tringle 42 quitte la position télécommande. Le montage fou sur un demi-tour de la manivelle 118 de sortie du bloc motoréducteur 90 permet la manoeuvre de l'arbre 94 par la commande manuelle de secours 44 sans provoquer une rotation forcée de l'arbre de sortie 114 de l'ensemble moteur et réducteur de vitesse 112. Cet état est représenté à la figure 8, dans laquelle l'arbre de sortie 114 du bloc motoréducteur 90 se trouve toujours en position de fermeture, alors que la bielle 126 de transmission a été actionnée vers la position d'ouverture par la manivelle 96 de transmission, suite à une ouverture manuelle par la commande de secours 44.In the case of actuation of the rod 42 of the manual emergency control 44, the cam 136 integral with the shaft 94 causes the switching of the microswitch device 138 to interrupt the electrical orders transmitted to the gearmotor block 90, as soon as the rod 42 leaves the remote control position. The crazy mounting on a half-turn of the crank 118 of the output of the geared motor block 90 allows the operation of the shaft 94 by the manual emergency control 44 without causing a forced rotation of the output shaft 114 of the motor assembly and speed reducer 112. This state is shown in FIG. 8, in which the output shaft 114 of the gearmotor block 90 is still in the closed position, while the transmission connecting rod 126 has been actuated towards the position of opening by the transmission crank 96, following a manual opening by the emergency control 44.

Claims (8)

1. Mécanisme de commande pour un interrupteur (10) ou disjoncteur électrique multipolaire à haute tension susceptible d'occuper une première position de fermeture, et une deuxième position d'ouverture des contacts (140,144), ledit mécanisme (40) comportant :
- un dispositif accumulateur d'énergie (64) à genouillère (65) composée d'une manivelle (66) d'armement articulée par un axe (68) à un guide télescopique (70) de support d'un ressort (72) de compression,
- une première manivelle (52) de commande montée sur un arbre (60) d'armement, et accouplée par une bielle (54) de transmission à une deuxième manivelle (56) de commande, laquelle est calée sur un arbre (58) d'actionnement de l'interrupteur (10),
- et des moyens de commande de la manivelle (66) d'armement pour provoquer le franchissement de point mort de la genouillère (65) lors du passage du mécanisme (40) de la première position vers la deuxième position, et vice versa, caractérisé en ce que la manivelle (66) d'armement est montée folle sur un arbre (60) d'armement en coopérant avec des taquets (74, 76) d'entraînement de la première manivelle (52) de commande, qu'à l'opposé de l'axe (68) de la genouillère (65), le guide télescopique (70) du ressort (72) prend appui sur un maneton (78) situé sur la deuxième manivelle (56) de commande, pour engendrer durant l'opération d'armement du ressort (72) un couple de maintien temporaire des première et deuxième manivelles (52, 56) dans leur état initial jusqu'à la brisure de la genouillère (65), et que les moyens de commande de la manivelle (66) d'armement comportent un mécanisme de transmission (88) piloté soit automatiquement par un bloc motoréducteur (90), soit manuellement par un arbre (94) accouplé à une commande de secours (44) par une tringle (42).1. Control mechanism for a high voltage multi-pole electrical switch (10) or circuit breaker capable of occupying a first closed position, and a second contact open position (140,144), said mechanism (40) comprising:
- an energy storage device (64) with toggle joint (65) composed of a crank arm (66) articulated by an axis (68) to a telescopic guide (70) supporting a spring (72) of compression,
- A first control crank (52) mounted on a cocking shaft (60), and coupled by a connecting rod (54) to a second control crank (56), which is wedged on a shaft (58) d 'actuation of the switch (10),
- And control means of the crank (66) for arming to cause the crossing of neutral point of the toggle joint (65) during the passage of the mechanism (40) from the first position to the second position, and vice versa, characterized in that the cocking crank (66) is mounted idly on a cocking shaft (60) by cooperating with latches (74, 76) driving the first control crank (52), only at the opposite the axis (68) of the toggle joint (65), the telescopic guide (70) of the spring (72) is supported on a crank pin (78) located on the second control crank (56), to generate during the operation of arming the spring (72) a temporary holding torque of the first and second cranks (52, 56) in their initial state until the toggle joint (65) is broken, and that the crank control means (66) for arming include a transmission mechanism (88) controlled either automatically by a geared motor unit (90), so it manually by a shaft (94) coupled to an emergency control (44) by a rod (42). 2. Mécanisme de commande selon la revendication 1, caractérisé en ce que la première et la deuxième manivelles (52, 56) de commande comportent des surfaces d'arrêt (84, 86) coopérant respectivement en positions de fermeture et d'ouverture avec une première et une deuxième butées (80, 82) de fin de course.2. Control mechanism according to claim 1, characterized in that the first and second control cranks (52, 56) have stop surfaces (84, 86) cooperating respectively in the closed and open positions with a first and second end stops (80, 82). 3. Mécanisme de commande selon la revendication 1 ou 2, caractérisé en ce que le mécanisme de transmission (88) est relié au bloc motoréducteur (90) par une liaison cinématique, agencée pour autoriser les manoeuvres automatiques par le bloc motoréducteur (90) sans réaction sur l'arbre (94) de la commande de secours (44), et réciproquement une manoeuvre manuelle par l'arbre (94) de la commande de secours (44) sans provoquer de rotation forcée de l'arbre de sortie (114) du bloc motoréducteur (90).3. Control mechanism according to claim 1 or 2, characterized in that the transmission mechanism (88) is connected to the gearmotor block (90) by a kinematic link, arranged to authorize automatic operations by the gearmotor block (90) without reaction on the shaft (94) of the emergency control (44), and conversely manual operation by the shaft (94) of the emergency control (44) without causing forced rotation of the output shaft (114 ) of the geared motor unit (90). 4. Mécanisme de commande selon la revendication 3, caractérisé en ce que le mécanisme de transmission (88) comporte une manivelle (96) de transmission montée coaxialement folle sur l'arbre (94) de la commande manuelle de secours (44), ladite manivelle (96) ayant une ouverture (98) oblongue servant de logement à un premier ergot (100) d'entraînement fixé à une manivelle (92) auxiliaire calée sur l'arbre (94) de la commande manuelle de secours (44).4. Control mechanism according to claim 3, characterized in that the transmission mechanism (88) comprises a transmission crank (96) mounted coaxially idle on the shaft (94) of the manual emergency control (44), said crank (96) having an oblong opening (98) serving as a housing for a first drive lug (100) fixed to an auxiliary crank (92) wedged on the shaft (94) of the manual emergency control (44). 5. Mécanisme de commande selon la revendication 4, caractérisé en ce que la manivelle (96) de transmission est accouplée par une bielle (126) à une manivelle (118) de commande montée folle sur l'arbre de sortie (114) durant une course prédéterminée du bloc motoréducteur (90), ledit arbre (114) tournant toujours dans le même sens de rotation pour les manoeuvres de fermeture et d'ouverture par télécommande, et étant équipé d'un tenon (116) d'entraînement de la manivelle (118) de commande.5. Control mechanism according to claim 4, characterized in that the transmission crank (96) is coupled by a connecting rod (126) to a control crank (118) mounted idle on the output shaft (114) during a predetermined stroke of the geared motor unit (90), said shaft (114) always rotating in the same direction of rotation for closing and opening operations by remote control, and being equipped with a pin (116) for driving the crank (118) command. 6. Mécanisme de commande selon la revendication 5, caractérisé en ce que le pourtour de la manivelle (118) de commande du bloc motoréducteur (90) comporte un premier et un deuxième crans (120, 122) coopérant alternativement avec un cliquet (124) de blocage.6. Control mechanism according to claim 5, characterized in that the periphery of the crank (118) for controlling the block geared motor (90) has first and second notches (120, 122) cooperating alternately with a locking pawl (124). 7. Mécanisme de commande selon la revendication 4, 5 ou 6, caractérisé en ce que sur l'arbre (94) de la commande de secours (44) est montée une came (136) destinée à coopérer avec un dispositif à microrupteurs (138) pour interrompre les ordres électriques transmis au bloc motoréducteur (90) en cas d'actionnement manuel de la tringle (42) de la commande de secours (44).7. Control mechanism according to claim 4, 5 or 6, characterized in that on the shaft (94) of the emergency control (44) is mounted a cam (136) intended to cooperate with a microswitch device (138 ) to interrupt the electrical orders transmitted to the geared motor unit (90) in the event of manual actuation of the rod (42) of the emergency control (44). 8. Mécanisme de commande selon l'une des revendications 1 à 7, pour un interrupteur (10) triphasé fixé sur un poteau (12) d'un réseau électrique aérien, caractérisé en ce que le mécanisme (40) de commande est situé sous l'interrupteur (10) , et que la tringle (42) de la commande de secours (44) s'étend parallèlement au poteau (12).8. Control mechanism according to one of claims 1 to 7, for a three-phase switch (10) fixed to a pole (12) of an overhead electrical network, characterized in that the control mechanism (40) is located under the switch (10), and that the rod (42) of the emergency control (44) extends parallel to the post (12).
EP19900420379 1989-09-07 1990-08-21 Control mechanism of a high tension multipolar switch Expired - Lifetime EP0417015B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8911810 1989-09-07
FR8911810A FR2651603B1 (en) 1989-09-07 1989-09-07 CONTROL MECHANISM OF A HIGH VOLTAGE MULTIPOLAR SWITCH.

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EP0417015A1 true EP0417015A1 (en) 1991-03-13
EP0417015B1 EP0417015B1 (en) 1995-10-25

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EP19900420379 Expired - Lifetime EP0417015B1 (en) 1989-09-07 1990-08-21 Control mechanism of a high tension multipolar switch

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EP (1) EP0417015B1 (en)
CA (1) CA2024198A1 (en)
DE (1) DE69023195T2 (en)
ES (1) ES2080136T3 (en)
FI (1) FI97832C (en)
FR (1) FR2651603B1 (en)
NO (1) NO301857B1 (en)
PT (1) PT95217B (en)

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WO2020002850A1 (en) 2018-06-29 2020-01-02 Socomec Manual control device for a remotely operated source inverter
CN117316700A (en) * 2023-09-25 2023-12-29 国网安徽省电力有限公司来安县供电公司 Overhead line pole-mounted isolating switch equipment for power distribution network

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FR2706674A1 (en) * 1993-06-17 1994-12-23 Soule Sa Device for cutting off an electrical line with improved control means
FR2786944A1 (en) * 1998-12-07 2000-06-09 Soule Materiel Electr Electrical cut-out for medium and high tension comprises sealed box enclosing step-down transformer to provide low voltage for control of operation
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EP2102955A1 (en) * 2006-12-21 2009-09-23 ABB Technology AG High-voltage switchgear
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FR2921196A1 (en) * 2007-09-18 2009-03-20 Schneider Electric Ind Sas DEVICE FOR CONTROLLING THE OPENING AND / OR CLOSING OF ELECTRICAL CONTACTS IN AN ELECTRICAL APPARATUS AND ELECTRICAL APPARATUS COMPRISING SUCH A DEVICE
CN101393804B (en) * 2007-09-18 2012-11-14 施耐德电器工业公司 Device for controlling the opening and/or closing of the electrical contacts in an electrical apparatus and electrical apparatus containing such a device
EP2161730A1 (en) 2008-09-05 2010-03-10 Schneider Electric Industries SAS Device for controlling the opening and/or closing of the contacts in an electrical device
FR2935833A1 (en) * 2008-09-05 2010-03-12 Schneider Electric Ind Sas DEVICE FOR CONTROLLING THE OPENING AND / OR CLOSING OF CONTACTS IN AN ELECTRICAL APPARATUS
WO2020002850A1 (en) 2018-06-29 2020-01-02 Socomec Manual control device for a remotely operated source inverter
US11127549B2 (en) 2018-06-29 2021-09-21 Socomec Manual control device for a remotely operated source inverter
CN117316700A (en) * 2023-09-25 2023-12-29 国网安徽省电力有限公司来安县供电公司 Overhead line pole-mounted isolating switch equipment for power distribution network

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CA2024198A1 (en) 1991-03-08
NO903889L (en) 1991-03-08
PT95217B (en) 1998-06-30
NO301857B1 (en) 1997-12-15
EP0417015B1 (en) 1995-10-25
FI97832B (en) 1996-11-15
DE69023195D1 (en) 1995-11-30
FR2651603B1 (en) 1991-11-08
DE69023195T2 (en) 1996-05-09
FI904383A0 (en) 1990-09-05
ES2080136T3 (en) 1996-02-01
FI97832C (en) 1997-02-25
FR2651603A1 (en) 1991-03-08
NO903889D0 (en) 1990-09-06
PT95217A (en) 1992-05-29

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