EP0602024A2 - Operating mechanism for a multipolar fault-current protective switch with a rotary crossbar - Google Patents

Operating mechanism for a multipolar fault-current protective switch with a rotary crossbar Download PDF

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Publication number
EP0602024A2
EP0602024A2 EP94420082A EP94420082A EP0602024A2 EP 0602024 A2 EP0602024 A2 EP 0602024A2 EP 94420082 A EP94420082 A EP 94420082A EP 94420082 A EP94420082 A EP 94420082A EP 0602024 A2 EP0602024 A2 EP 0602024A2
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EP
European Patent Office
Prior art keywords
lever
relay
bar
triggering
mechanical connection
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
EP94420082A
Other languages
German (de)
French (fr)
Other versions
EP0602024A3 (en
EP0602024B1 (en
Inventor
Jacques Servant
Jacques Vallot
Georges Cheyssac
Didier Dumont
Michel Bonniau
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Merlin Gerin SA, Schneider Electric SE filed Critical Merlin Gerin SA
Publication of EP0602024A2 publication Critical patent/EP0602024A2/en
Publication of EP0602024A3 publication Critical patent/EP0602024A3/en
Application granted granted Critical
Publication of EP0602024B1 publication Critical patent/EP0602024B1/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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer

Definitions

  • Bipolar or tetrapolar differential switches with high ratings have a high contact pressure.
  • the automatic opening of these switches by tripping of the relay requires a fairly large tripping energy, which increases the size of the relay and the summing transformer, in particular in the case of a differential trip device with its own current.
  • the object of the invention is to reduce the tripping energy of the relay of the differential switch, and to facilitate the mounting of the control mechanism.
  • the differential switch according to the invention is characterized in that the link comprises a U-shaped metal stirrup cooperating with stop means associated with the latching lever and the switching bar to form the mechanical connection, that the relay transmits the triggering order to the lock by means of a triggering lever associated with an intermediate mechanical amplifier, and that the plate of the mechanism is equipped with a notch authorizing the insertion of the link to establish the mechanical connection in end of mounting of the switch after installation of the first lever sub-assembly, and of the second bar sub-assembly.
  • a four-pole differential switch 10 is housed in an insulating box 12 of parallelepiped shape, composed of a base 14 and a cover or cover 16 assembled to one another by snap-fastening.
  • the base 14 contains the poles and has a fixing base 18 for mounting the switch 10 on a fixing rail (not shown).
  • Each pole is connected to a pair of connection terminals 20,22 arranged on two opposite parallel faces (21,23) of the base (14) and comprises a fixed contact (24) cooperating inside an interruption chamber current with a movable contact piece 26.
  • the fixed contact 24 is carried by a fixed conductive pad 28 connected directly to one of the terminals 20.
  • the movable contact piece 26 is fixed to a pivoting contact arm 30, positioned in a housing 31 of the switching bar 32, which is arranged in a rotary contact-carrying shaft.
  • a contact pressure spring 33 is interposed in the housing 31 between the end of the contact arm 30 and the wall of the bar 32.
  • the switching bar 32 is common to all the poles and extends above the interrupting chambers perpendicular to the four contact arms 30.
  • the axis 29 of rotation of the bar 32 extends in a parallel horizontal direction at the faces 21.23.
  • One end of the rotary bar 32 is coupled to a control mechanism 34, and the other opposite end is provided with a cylindrical end-piece 35 housed in a bearing 36 secured to the base 14.
  • Each contact arm 30 is connected by a braid 37 (FIG. 8) to a fixed conductor 39 connected to a fixed stud 38 of intermediate connection, projecting from the interruption chamber.
  • the different pole interrupting chambers are distributed at regular intervals along the horizontal bar 32, being isolated from each other by subdivision walls 40, 42, coming from molding with the base 14.
  • the neutral pole is located on the side of the mechanism 34, and closes before the three phase poles.
  • the base 14 includes another compartment 44 between the wall 42 and the terminals 22, for housing a summing transformer 46 with a toric core 48.
  • the four primary windings 50 of the transformer 46 are shaped from the connecting conductors connecting the different pads 38 for connection to the corresponding terminals 22.
  • the transformer 46 further comprises a secondary winding 52 electrically connected to the excitation coil of a trip relay 54 hooked to the control mechanism 34.
  • the mechanical members constituting the control mechanism 34 are carried by a fixed plate 56, which has an orifice 58 serving as a bearing for the bar 32.
  • Two fixing screws 60, 62 fasten the control mechanism 34 to the base 14.
  • the magnetic circuit of the trigger relay 54 is polarized by a permanent magnet, and requires a low trigger energy from the summing transformer 48.
  • the control mechanism 34 has a manual closing and opening actuation by a handle 64, and an automatic triggering by means of the relay 54 upon detection of an insulation fault by the transformer 48.
  • the handle 64 crosses a light 66 of the cover 16, and is mounted with limited pivoting on an axis 68 between two stable positions of opening and closing of the contacts of the switch 10.
  • a connecting rod 70 of transmission comprising a metal stirrup in the shape of U and of circular section, is coupled to the internal base of the handle 64 to form the hinge pin 72 of a toggle.
  • the articulation axis 72 is eccentric relative to the pivot axis 68 of the handle 64, and results from the introduction of one of the ends of the rod 70 into an orifice in the base of the handle 64 .
  • the opposite end 74 of the link 70 cooperates on the one hand with a first support stop 76 of a latching lever 78, and on the other hand with a second support stop 80 on the switching bar 32.
  • the latching lever 78 is pivotally mounted on an axis 82 between an armed position and a disarmed position, and comprises at the opposite end of the axis 82, a holding spout 84 capable of cooperating in the armed position with a nose retainer 86 of a lock 88.
  • the lock 88 is shaped as a double lever mounted with limited rotation on an axis 90 between a locked position and an unlocked position.
  • One of the levers is constituted by the retaining nose 86, and the other latching lever 92 cooperates in the locked position with a step of a half-moon 94 articulated on an axis 96.
  • the first bearing stop 76 is arranged between the axis 82 and the holding spout 84.
  • a trigger lever 98 is pivotally mounted on an axis 100 between an excitation working position of the relay 54, and a non-triggering rest position, in which the mechanism 34 is respectively triggered or maintained in the armed state.
  • a first control branch 102 of the trip lever 98 is capable of being actuated by the striker of the trip relay 54 (see arrow R in FIG. 3) when a leakage current to earth is detected.
  • the trigger lever 98 comprises a second control branch 104 cooperating directly with a tab 105 of the half-moon 94, so as to unlock the latching lever 92 of the latch 88 when the relay 54 trips.
  • a first return spring 106 biases the switching rod 32 towards the open position, when one of the stops 76.80 releases the lower end 74 of the rod 70.
  • a second return spring 108 biases the tripping lever anticlockwise towards the rest position, by providing the automatic reset energy of the relay 54.
  • a third and a fourth return spring 110, 112 urge the half-moon 94 and the latch 88 in pivoting in a clockwise direction, towards their respective original positions.
  • a fifth return spring 114 biases the latching lever 78 anticlockwise after triggering, causing the latching to break between the spout 84 and the nose 86.
  • control mechanism 34 with differential triggering is provided with three stages of reduction of the mechanical forces, arranged between the triggering relay 54, and the switching bar 32.
  • the presence of such a mechanical amplifier with three successive stages allows open a high contact pressure differential switch from a low energy trip relay.
  • the operation of the four-pole differential switch 10 is as follows:
  • a voluntary action of holding the handle 64 in the closed position immobilizes the link 70 as shown in Figures 3 and 4, but nevertheless allows the erasure of the first and second support stops 76.80, due to the rotation of the lever hooking 78 after triggering of relay 54.
  • the tripping force of the relay 54 passes through three reduction stages, defined by the tripping lever 98, the half-moon 94, the latch 88 and the latching lever 78, before releasing the switching bar 32.
  • the coupling of the transmission link 70 takes place at the end of mounting of the switch 10 after the first lever sub-assembly 64 and return spring (not shown) has been put in place, and the second sub-assembly formed by the bar 32 , the mechanism 34, and the plate 56.
  • the insertion of the rod 70 into the orifice of the lever, and on the two abutments 76.80 is carried out through a notch 120 of the plate 56.
  • the mechanism 34 is put in place after that of the conductive copper part located in the lower part of the base, so as to reduce the lengths of the connection conductors, and to make the welded connections accessible.
  • the mechanism 34 can also be used in any other multipole differential switch, in particular bipolar.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

A differential switch (10) includes a switching bar (32) arranged as a contact-carrying rotary shaft (30, 26), a summer transformer (46) associated with a triggering relay (54) with automatic rearming, and a control mechanism (34) with a handle (64) and latch (88). The end (74) of the link rod (70) situated opposite the axis of articulation (72) of the knuckle joint interacts upon establishing the mechanical link with a first bearing stop (76) of the engaging lever (78) and a second bearing stop (80) of the switching bar (32). The relay (54) transmits the triggering order to the latch (88) via a triggering lever (98) associated with an intermediate mechanical amplifier. This results in a mechanism with three stages for stepping down forces between the relay (54) and the bar (32), which makes it possible to reduce the triggering energy. <IMAGE>

Description

L'invention est relative à un interrupteur différentiel multipolaire à boîtier isolant renfermant un mécanisme de commande d'un barreau de commutation agencé en arbre rotatif porte-contacts déplaçable entre une position d'ouverture et une position de fermeture, et un transformateur sommateur associé à un relais de déclenchement à réarmement automatique lors de la venue du barreau en position d'ouverture, ledit mécanisme comprenant:

  • une manette pivotante accouplée à une biellette de transmission pour constituer une genouillère reliée au barreau par une liaison mécanique,
  • un verrou coopérant avec un levier d'accrochage pour briser la liaison mécanique lors d'un déclenchement du relais,
  • et un premier ressort de rappel sollicitant le barreau vers la position d'ouverture.
The invention relates to a multipolar differential switch with insulating housing containing a control mechanism for a switching rod arranged in a rotary contact-carrying shaft movable between an open position and a closed position, and a summing transformer associated with an automatic resetting trigger relay when the bar comes into the open position, said mechanism comprising:
  • a pivoting lever coupled to a transmission link to constitute a toggle connected to the bar by a mechanical connection,
  • a lock cooperating with a latching lever to break the mechanical connection when the relay trips,
  • and a first return spring urging the bar towards the open position.

Un tel interrupteur différentiel est décrit dans les brevets DE2504007 et 1563671.Such a differential switch is described in patents DE2504007 and 1563671.

Les interrupteurs différentiels bipolaires ou tétrapolaires à calibres élevés, présentent une pression de contacts importante. L'ouverture automatique de ces interrupteurs par déclenchement du relais, nécessite une énergie de déclenchement assez importante, ce qui augmente l'encombrement du relais et du transformateur sommateur, notamment dans le cas d'un déclencheur différentiel à propre courant.Bipolar or tetrapolar differential switches with high ratings have a high contact pressure. The automatic opening of these switches by tripping of the relay requires a fairly large tripping energy, which increases the size of the relay and the summing transformer, in particular in the case of a differential trip device with its own current.

L'objet de l'invention consiste à réduire l'énergie de déclenchement du relais de l'interrupteur différentiel, et à faciliter le montage du mécanisme de commande.The object of the invention is to reduce the tripping energy of the relay of the differential switch, and to facilitate the mounting of the control mechanism.

L'interrupteur différentiel selon l'invention, est caractérisé en ce que la biellette comporte un étrier métallique en forme de U coopérant avec des moyens de butée associés au levier d'accrochage et au barreau de commutation pour former la liaison mécanique, que le relais transmet l'ordre de déclenchement au verrou par l'intermédiaire d'un levier de déclenchement associé à un amplificateur mécanique intermédiaire, et que la platine du mécanisme est équipée d'une entaille autorisant l'insertion de la biellette pour établir la liaison mécanique en fin de montage de l'interrupteur après mise en place du premier sous-ensemble à manette, et du deuxième sous-ensemble à barreau .The differential switch according to the invention is characterized in that the link comprises a U-shaped metal stirrup cooperating with stop means associated with the latching lever and the switching bar to form the mechanical connection, that the relay transmits the triggering order to the lock by means of a triggering lever associated with an intermediate mechanical amplifier, and that the plate of the mechanism is equipped with a notch authorizing the insertion of the link to establish the mechanical connection in end of mounting of the switch after installation of the first lever sub-assembly, and of the second bar sub-assembly.

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:

  • les figures 1 et 2 représentent le schéma et une vue selon la ligne II-II de la figure 5 du mécanisme de commande, en position déclenchée de l'interrupteur différentiel;
  • les figures 3 et 4 sont des vues identiques aux figures 1 et 2, en position de fermeture de l'interrupteur;
  • la figure 5 montre une vue en plan de l'interrupteur après retrait du capot;
  • les figures 6 et 7 représentent des vues de profil de gauche et de droite de la figure 5;
  • la figure 8 est une vue complète en coupe de l'interrupteur différentiel.
Other advantages and characteristics 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:
  • Figures 1 and 2 show the diagram and a view along line II-II of Figure 5 of the control mechanism, in the tripped position of the differential switch;
  • Figures 3 and 4 are views identical to Figures 1 and 2, in the closed position of the switch;
  • Figure 5 shows a plan view of the switch after removing the cover;
  • Figures 6 and 7 show left and right side views of Figure 5;
  • Figure 8 is a full sectional view of the differential switch.

Sur les figures, un interrupteur différentiel 10 tétrapolaire est logé dans un boîtier 12 isolant de forme parallélépipèdique, composé d'un socle 14 et d'un capot ou couvercle 16 assemblés l'un à l'autre par encliquetage. Le socle 14 renferme les pôles et est doté d'une base de fixation 18 pour le montage de l'interrupteur 10 sur un rail de fixation (non représenté).In the figures, a four-pole differential switch 10 is housed in an insulating box 12 of parallelepiped shape, composed of a base 14 and a cover or cover 16 assembled to one another by snap-fastening. The base 14 contains the poles and has a fixing base 18 for mounting the switch 10 on a fixing rail (not shown).

Chaque pôle est raccordé à une paire de bornes 20,22 de connexion disposée sur deux faces parallèles opposées (21,23) du socle (14) et comporte un contact fixe (24) coopérant à l'intérieur d'une chambre d'interruption de courant avec une pièce de contact mobile 26. Le contact fixe 24 est porté par une plage 28 conductrice fixe reliée directement à l'une des bornes 20. La pièce de contact mobile 26 est fixée à un bras de contact 30 pivotant, positionné dans un logement 31 du barreau de commutation 32, lequel est agencé en arbre rotatif porte-contacts. Un ressort 33 de pression de contact est interposé dans le logement 31 entre l'extrémité du bras de contact 30 et la paroi du barreau 32.Each pole is connected to a pair of connection terminals 20,22 arranged on two opposite parallel faces (21,23) of the base (14) and comprises a fixed contact (24) cooperating inside an interruption chamber current with a movable contact piece 26. The fixed contact 24 is carried by a fixed conductive pad 28 connected directly to one of the terminals 20. The movable contact piece 26 is fixed to a pivoting contact arm 30, positioned in a housing 31 of the switching bar 32, which is arranged in a rotary contact-carrying shaft. A contact pressure spring 33 is interposed in the housing 31 between the end of the contact arm 30 and the wall of the bar 32.

Le barreau de commutation 32 est commun à l'ensemble des pôles et s'étend au-dessus des chambres d'interruption perpendiculairement aux quatre bras de contacts 30. L'axe 29 de rotation du barreau 32 s'étend selon une direction horizontale parallèle aux faces 21,23. L'une des extrémités du barreau 32 rotatif est accouplée à un mécanisme de commande 34, et l'autre extrémité opposée est pourvue d'un embout 35 cylindrique logé dans un palier 36 assujetti au socle 14.The switching bar 32 is common to all the poles and extends above the interrupting chambers perpendicular to the four contact arms 30. The axis 29 of rotation of the bar 32 extends in a parallel horizontal direction at the faces 21.23. One end of the rotary bar 32 is coupled to a control mechanism 34, and the other opposite end is provided with a cylindrical end-piece 35 housed in a bearing 36 secured to the base 14.

Chaque bras de contact 30 est connecté par une tresse 37 (figure 8) à un conducteur 39 fixe relié à un plot fixe 38 de branchement intermédiaire, faisant saillie de la chambre d'interruption.Each contact arm 30 is connected by a braid 37 (FIG. 8) to a fixed conductor 39 connected to a fixed stud 38 of intermediate connection, projecting from the interruption chamber.

Les différentes chambres d'interruption des pôles sont réparties à intervalles réguliers le long du barreau 32 horizontal, en étant isolées les unes des autres par des parois de subdivision 40,42, venant de moulage avec le socle 14. Le pôle de neutre est situé du côté du mécanisme 34, et se ferme avant les trois pôles de phases.The different pole interrupting chambers are distributed at regular intervals along the horizontal bar 32, being isolated from each other by subdivision walls 40, 42, coming from molding with the base 14. The neutral pole is located on the side of the mechanism 34, and closes before the three phase poles.

Le socle 14 comporte un autre compartiment 44 entre la paroi 42 et les bornes 22, pour le logement d'un transformateur sommateur 46 à noyau torique 48. Les quatre enroulements primaires 50 du transformateur 46 sont conformés à partir des conducteurs de liaison reliant les différents plots 38 de branchement aux bornes 22 correspondantes. Le transformateur 46 comprend d'autre part un enroulement secondaire 52 connecté électriquement à la bobine d'excitation d'un relais de déclenchement 54 accroché au mécanisme de commande 34.The base 14 includes another compartment 44 between the wall 42 and the terminals 22, for housing a summing transformer 46 with a toric core 48. The four primary windings 50 of the transformer 46 are shaped from the connecting conductors connecting the different pads 38 for connection to the corresponding terminals 22. The transformer 46 further comprises a secondary winding 52 electrically connected to the excitation coil of a trip relay 54 hooked to the control mechanism 34.

Les organes mécaniques constitutifs du mécanisme de commande 34 sont portés par une platine 56 fixe, laquelle présente un orifice 58 servant de palier au barreau 32.The mechanical members constituting the control mechanism 34 are carried by a fixed plate 56, which has an orifice 58 serving as a bearing for the bar 32.

Deux vis de fixation 60,62 solidarisent le mécanisme de commande 34 au socle 14. Le circuit magnétique du relais de déclenchement 54 est polarisé par un aimant permanent, et nécessite une faible énergie de déclenchement issue du transformateur sommateur 48.Two fixing screws 60, 62 fasten the control mechanism 34 to the base 14. The magnetic circuit of the trigger relay 54 is polarized by a permanent magnet, and requires a low trigger energy from the summing transformer 48.

Le mécanisme de commande 34 présente un actionnement manuel de fermeture et d'ouverture par une manette 64, et un déclenchement automatique au moyen du relais 54 lors d'une détection d'un défaut d'isolement par le transformateur 48. La manette 64 traverse une lumière 66 du couvercle 16, et est montée à pivotement limité sur un axe 68 entre deux positions stables d'ouverture et de fermeture des contacts de l'interrupteur 10. Une biellette 70 de transmission comprenant un étrier métallique en forme de U et de section circulaire, est accouplée à l'embase interne de la manette 64 pour constituer l'axe d'articulation 72 d'une genouillère. L'axe d'articulation 72 est excentré par rapport à l'axe de pivotement 68 de la manette 64, et résulte de l'introduction de l'une des extrémités de la biellette 70 dans un orifice de l'embase de la manette 64.The control mechanism 34 has a manual closing and opening actuation by a handle 64, and an automatic triggering by means of the relay 54 upon detection of an insulation fault by the transformer 48. The handle 64 crosses a light 66 of the cover 16, and is mounted with limited pivoting on an axis 68 between two stable positions of opening and closing of the contacts of the switch 10. A connecting rod 70 of transmission comprising a metal stirrup in the shape of U and of circular section, is coupled to the internal base of the handle 64 to form the hinge pin 72 of a toggle. The articulation axis 72 is eccentric relative to the pivot axis 68 of the handle 64, and results from the introduction of one of the ends of the rod 70 into an orifice in the base of the handle 64 .

L'extrémité opposée 74 de la biellette 70 coopère d'une part avec une première butée d'appui 76 d'un levier d'accrochage 78, et d'autre part avec une deuxième butée d'appui 80 du barreau de commutation 32. Le levier d'accrochage 78 est monté à pivotement sur un axe 82 entre une position armée et une position désarmée, et comporte à l'extrémité opposée de l'axe 82, un bec de maintien 84 susceptible de coopérer en position armée avec un nez de retenue 86 d'un verrou 88.The opposite end 74 of the link 70 cooperates on the one hand with a first support stop 76 of a latching lever 78, and on the other hand with a second support stop 80 on the switching bar 32. The latching lever 78 is pivotally mounted on an axis 82 between an armed position and a disarmed position, and comprises at the opposite end of the axis 82, a holding spout 84 capable of cooperating in the armed position with a nose retainer 86 of a lock 88.

Le verrou 88 est conformé en levier double monté à rotation limitée sur un axe 90 entre une position verrouillée et une position déverrouillée. L'un des leviers est constitué par le nez de retenue 86, et l'autre levier d'encliquetage 92 coopère en position verrrouillée avec un redan d'une demi- lune 94 articulée sur un axe 96. La première butée d'appui 76 est agencée entre l'axe 82 et le bec de maintien 84.The lock 88 is shaped as a double lever mounted with limited rotation on an axis 90 between a locked position and an unlocked position. One of the levers is constituted by the retaining nose 86, and the other latching lever 92 cooperates in the locked position with a step of a half-moon 94 articulated on an axis 96. The first bearing stop 76 is arranged between the axis 82 and the holding spout 84.

Un levier de déclenchement 98 est monté à pivotement sur un axe 100 entre une position de travail d'excitation du relais 54, et une position de repos de non déclenchement, dans lesquelles le mécanisme 34 est respectivement déclenché ou maintenu dans l'état armé. Une première branche de commande 102 du levier de déclenchement 98 est susceptible d'être actionnée par le percuteur du relais de déclenchement 54 (voir flèche R sur figure 3) lors d'une détection d'un courant de fuite à la terre. Le levier de déclenchement 98 comporte une deuxième branche de commande 104 coopérant directement avec une patte 105 de la demi-lune 94, de manière à déverrouiller le levier d'encliquetage 92 du verrou 88 lors du déclenchement du relais 54.A trigger lever 98 is pivotally mounted on an axis 100 between an excitation working position of the relay 54, and a non-triggering rest position, in which the mechanism 34 is respectively triggered or maintained in the armed state. A first control branch 102 of the trip lever 98 is capable of being actuated by the striker of the trip relay 54 (see arrow R in FIG. 3) when a leakage current to earth is detected. The trigger lever 98 comprises a second control branch 104 cooperating directly with a tab 105 of the half-moon 94, so as to unlock the latching lever 92 of the latch 88 when the relay 54 trips.

Un premier ressort de rappel 106 sollicite le barreau de commutation 32 vers la position d'ouverture, lorsque l'une des butées 76,80 libère l'extrémité 74 inférieure de la biellette 70.A first return spring 106 biases the switching rod 32 towards the open position, when one of the stops 76.80 releases the lower end 74 of the rod 70.

Un deuxième ressort de rappel 108 sollicite le levier de déclenchement dans le sens inverse des aiguilles d'une montre vers la position de repos, en apportant l'énergie de réarmement automatique du relais 54.A second return spring 108 biases the tripping lever anticlockwise towards the rest position, by providing the automatic reset energy of the relay 54.

Un troisième et un quatrième ressorts de rappel 110,112 sollicitent la demi-lune 94 et le verrou 88 en pivotement dans le sens des aiguilles d'une montre, vers leurs positions d'origines respectives.A third and a fourth return spring 110, 112 urge the half-moon 94 and the latch 88 in pivoting in a clockwise direction, towards their respective original positions.

Un cinquième ressort de rappel 114 sollicite le levier d'accrochage 78 dans le sens inverse des aiguilles d'une montre, après déclenchement engendrant une rupture de l'accrochage entre le bec 84 et le nez 86.A fifth return spring 114 biases the latching lever 78 anticlockwise after triggering, causing the latching to break between the spout 84 and the nose 86.

On remarque que le mécanisme de commande 34 à déclenchement différentiel est doté de trois étages de démultiplication des efforts mécaniques, agencés entre le relais de déclenchement 54, et le barreau de commutation 32. La présence d'un tel amplificateur mécanique à trois étages successifs permet d'ouvrir un interrupteur différentiel à pression de contact élevée, à partir d'un relais de déclenchement à faible énergie.It is noted that the control mechanism 34 with differential triggering is provided with three stages of reduction of the mechanical forces, arranged between the triggering relay 54, and the switching bar 32. The presence of such a mechanical amplifier with three successive stages allows open a high contact pressure differential switch from a low energy trip relay.

Le fonctionnement de l'interrupteur différentiel 10 tétrapolaire est le suivant:The operation of the four-pole differential switch 10 is as follows:

FERMETURE MANUELLEMANUAL CLOSING

A partir de la position d'ouverture (figure 1 et 2), l'actionnement manuel de la manette 64 vers la gauche, provoque l'entraînement de la biellette 70 de transmission, avec une réaction simultanée de l'extrémité inférieure 74 sur les deux butées 76,80. L'action sur la première butée 76 engendre la rotation du levier d'accrochage 78 autour de l'axe 82 de manière à assurer l'engagement du bec de maintien 84 contre le nez de retenue 86 du verrou 88. Le levier d'encliquetage 92 du verrou 88 s'accroche en position verrouillée au redan de la demi-lune 94. L'action sur la deuxième butée 80 entraîne le barreau de commutation 32 en rotation autour de l'axe 29 vers la position de fermeture des contacts 24,26. La surcourse du barreau 32 permet d'assurer la pression de contact par l'intermédiaire du ressort 33 associé à chaque bras de contact 30. Le contact mobile du pôle de neutre se ferme avant les contacts des pôles de phases. L'interrupteur 10 se trouve alors dans la position fermée des contacts 24,26, et dans l'état armé du mécanisme 34 (figures 3 et 4).From the open position (FIGS. 1 and 2), manual actuation of the lever 64 to the left, causes the drive rod 70 to be driven, with a simultaneous reaction of the lower end 74 on the two stops 76.80. The action on the first stop 76 generates the rotation of the latching lever 78 around the axis 82 so as to ensure the engagement of the retaining spout 84 against the retaining nose 86 of the latch 88. The latching lever 92 of the lock 88 is hooked in the locked position to the step of the half-moon 94. The action on the second stop 80 causes the switching bar 32 to rotate about the axis 29 towards the closed position of the contacts 24, 26. The overtravel of the bar 32 ensures the contact pressure by means of the spring 33 associated with each contact arm 30. The movable contact of the neutral pole closes before the contacts of the phase poles. The switch 10 is then in the closed position of the contacts 24, 26, and in the armed state of the mechanism 34 (Figures 3 and 4).

OUVERTURE MANUELLEMANUAL OPENING

A partir de la position de fermeture (figures 3 et 4), la rotation de la manette 64 vers la droite provoque le déplacement de la biellette 70, dont l'extrémité 74 prend appui en permanence sur la première butée 76 de manière à maintenir le mécanisme 34 dans l'état armé. Au bout d'une course prédéterminée de la manette 64, l'extrémité 74 de la biellette 70 libère la deuxième butée 80, autorisant le retour automatique du barreau de commutation 32 vers la position d'ouverture sous l'action du premier ressort de rappel 106.From the closed position (Figures 3 and 4), the rotation of the handle 64 to the right causes the displacement of the rod 70, the end 74 of which is permanently supported on the first stop 76 so as to maintain the mechanism 34 in the armed state. After a predetermined stroke of the lever 64, the end 74 of the rod 70 releases the second stop 80, allowing the automatic return of the switching bar 32 to the open position under the action of the first return spring 106.

DECLENCHEMENT DIFFERENTIEL AUTOMATIQUEAUTOMATIC DIFFERENTIAL TRIGGERING

En position fermée de l'interrupteur 10 (figures 3 et 4), l'apparition d'un courant de fuite à la terre est détecté par le transformateur sommateur 48 qui commande le déclenchement du relais 54. L'action du percuteur (flèche R, figure 3) sur la première branche de commande 102 fait basculer le levier de déclenchement 98 autour de l'axe 100 vers la position de travail, dans laquelle la deuxième branche de commande 104 vient buter contre la patte 105 en entraînant la demi-lune 94 en rotation autour de l'axe 96 dans le sens inverse des aiguilles d'une montre. Le redan de la demi-lune 94 échappe au levier d'encliquetage 92 du verrou 88, lequel est entraîné par pivotement autour de l'axe 90 à l'encontre de la force du quatrième ressort de rappel 112. Il en résulte le déverrouillage de l'accrochage entre le nez de retenue 86 et le bec de maintien 84, suivi de la rotation dans le sens horaire autour de l'axe 82 du levier d'accrochage 78 vers la position désarmée. Au cours de cette phase de déverrouillage du levier d'accrochage 78, la première butée d'appui 76 s'efface par rapport à l'extrémité 74 de la biellette 70. Le support de la biellette 70 sur la deuxième butée d'appui 80 est également libéré, autorisant la rotation du barreau 32 vers la position d'ouverture sous l'action du premier ressort de rappel 106.In the closed position of the switch 10 (FIGS. 3 and 4), the appearance of a leakage current to earth is detected by the summing transformer 48 which controls the tripping of the relay 54. The action of the striker (arrow R , figure 3) on the first control branch 102 switches the trigger lever 98 around the axis 100 to the working position, in which the second control branch 104 abuts against the lug 105 by driving the half-moon 94 in rotation around the axis 96 in counterclockwise. The step of the half-moon 94 escapes the latching lever 92 of the latch 88, which is driven by pivoting around the axis 90 against the force of the fourth return spring 112. This results in the unlocking of the attachment between the retaining nose 86 and the retaining spout 84, followed by the rotation in a clockwise direction around the axis 82 of the attachment lever 78 towards the disarmed position. During this unlocking phase of the latching lever 78, the first support stop 76 disappears relative to the end 74 of the link 70. The support of the link 70 on the second support stop 80 is also released, allowing the bar 32 to rotate towards the open position under the action of the first return spring 106.

Le pivotement du levier de déclenchement 98 vers la position de travail n'influence pas l'état du deuxième ressort de rappel 108 qui reste inactif. Lorsque le barreau 32 arrive en position d'ouverture, une came de ce dernier agit sur la deuxième branche de commande 104 par l'intermédiaire d'un brin du deuxième ressort de rappel 108, provoquant le retour du levier de déclenchement 98 vers la position de repos, et le réarmement automatique du relais 54 par la première branche de commande 102.The pivoting of the release lever 98 towards the working position does not influence the state of the second return spring 108 which remains inactive. When the bar 32 comes to the open position, a cam of the latter acts on the second control branch 104 by means of a strand of the second return spring 108, causing the release lever 98 to return to the position rest, and automatic resetting of relay 54 by the first control branch 102.

Une action volontaire de maintien de la manette 64 en position de fermeture immobilise la biellette 70 telle que représentée aux figures 3 et 4, mais autorise néanmoins l'effacement des première et deuxième butées d'appui 76,80, dû à la rotation du levier d'accrochage 78 après déclenchement du relais 54.A voluntary action of holding the handle 64 in the closed position immobilizes the link 70 as shown in Figures 3 and 4, but nevertheless allows the erasure of the first and second support stops 76.80, due to the rotation of the lever hooking 78 after triggering of relay 54.

L'effort de déclenchement du relais 54 transite à travers trois étages de démultiplication, définis par le levier de déclenchement 98, la demi-lune 94, le verrou 88 et le levier d'accrochage 78, avant de libérer le barreau de commutation 32.The tripping force of the relay 54 passes through three reduction stages, defined by the tripping lever 98, the half-moon 94, the latch 88 and the latching lever 78, before releasing the switching bar 32.

L'accouplement de la biellette de transmission 70 intervient en fin de montage de l'interrupteur 10 après mise en place du premier sous-ensemble manette 64 et ressort de rappel (non représenté), et du deuxième sous-ensemble formé par le barreau 32, le mécanisme 34, et la platine 56. L'insertion de la biellette 70 dans l'orifice de la manette, et sur les deux butées d'appui 76,80 s'effectue à travers une entaille 120 de la platine 56.The coupling of the transmission link 70 takes place at the end of mounting of the switch 10 after the first lever sub-assembly 64 and return spring (not shown) has been put in place, and the second sub-assembly formed by the bar 32 , the mechanism 34, and the plate 56. The insertion of the rod 70 into the orifice of the lever, and on the two abutments 76.80 is carried out through a notch 120 of the plate 56.

La mise en place du mécanisme 34 s'effectue après celle de la partie conductrice en cuivre localisée dans la partie inférieure du socle, de manière à réduire les longueurs des conducteurs de liaison, et à rendre accessibles les liaisons soudées.The mechanism 34 is put in place after that of the conductive copper part located in the lower part of the base, so as to reduce the lengths of the connection conductors, and to make the welded connections accessible.

Le mécanisme 34 peut également être utilisé dans tout autre interrupteur différentiel multipolaire, notamment bipolaire.The mechanism 34 can also be used in any other multipole differential switch, in particular bipolar.

Claims (2)

Interrupteur différentiel (10) multipolaire à boîtier (12) isolant renfermant un mécanisme (34) de commande d'un barreau de commutation (32) agencé en arbre rotatif porte- contacts déplaçable entre une position d'ouverture et une position de fermeture, et un transformateur sommateur (46) associé à un relais (54) de déclenchement à réarmement automatique lors de la venue du barreau (32) en position d'ouverture, ledit mécanisme étant supporté par une platine (56), et comprenant: - une manette (64) pivotante accouplée à une biellette (70) de transmission pour constituer une genouillère reliée au barreau (32) par une liaison mécanique, - un verrou (88) coopérant avec un levier d'accrochage (78) pour briser la liaison mécanique lors d'un déclenchement du relais (54), - et un premier ressort de rappel (106) sollicitant le barreau (32) vers la position d'ouverture, caractérisé en ce que la biellette (70) comporte un éther métallique en forme de U coopérant avec des moyens de butée associés au levier d'accrochage (78) et au barreau de commutation (32) pour former la liaison mécanique, que le relais (54) transmet l'ordre de déclenchement au verrou (88) par l'intermédiaire d'un levier de déclenchement (98) associé à un amplificateur mécanique intermédiaire, et que la platine (56) du mécanisme (34) est équipée d'une entaille (120) autorisant l'insertion de la biellette (70) pour établir la liaison mécanique en fin de montage de l'interrupteur (10), après mise en place du premier sous-ensemble à manette (64), et du deuxième sous-ensemble à barreau (32).Multipolar differential switch (10) with insulating housing (12) enclosing a mechanism (34) for controlling a switching bar (32) arranged in a rotary shaft carrying contacts movable between an open position and a closed position, and a summing transformer (46) associated with an automatic resetting trigger relay (54) when the bar (32) comes into the open position, said mechanism being supported by a plate (56), and comprising: - a pivoting lever (64) coupled to a transmission link (70) to form a toggle connected to the bar (32) by a mechanical connection, - a lock (88) cooperating with a latching lever (78) to break the mechanical connection when the relay (54) trips, - And a first return spring (106) urging the bar (32) towards the open position, characterized in that the link (70) comprises a metal ether in the shape of a U cooperating with stop means associated with the latching lever (78) and the switching bar (32) to form the mechanical connection, that the relay ( 54) transmits the triggering order to the latch (88) by means of a triggering lever (98) associated with an intermediate mechanical amplifier, and that the plate (56) of the mechanism (34) is equipped with a notch (120) authorizing the insertion of the link (70) to establish the mechanical connection at the end of mounting of the switch (10), after the first lever sub-assembly (64) has been installed, and the second sub - bar assembly (32). Interrupteur différentiel selon la revendication 1, caractérisé en ce que le levier de déclenchement (98) est monté à pivotement sur un axe (100) entre une position de travail d'excitation du relais (54) et une position de repos de non déclenchement, ledit levier comportant une première branche de commande (102) susceptible d'être actionnée par le percuteur du relais (54) lors d'un déclenchement, et une deuxième branche de commande (104) d'un levier d'encliquetage (92) du verrou (88).Differential switch according to claim 1, characterized in that the tripping lever (98) is pivotally mounted on an axis (100) between a working position of excitation of the relay (54) and a non-tripping rest position, said lever comprising a first control branch (102) capable of being actuated by the striker of the relay (54) during tripping, and a second control branch (104) of a latching lever (92) of the lock (88).
EP94420082A 1988-12-14 1994-03-17 Operating mechanism for a multipolar fault-current protective switch with a rotary crossbar Expired - Lifetime EP0602024B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR8816593 1988-12-14
FR8816593A FR2640423B1 (en) 1988-12-14 1988-12-14 CONTROL MECHANISM OF A MULTIPOLAR DIFFERENTIAL SWITCH WITH ROTATING SWITCHING BAR
EP89420472A EP0377385B1 (en) 1988-12-14 1989-11-29 Operating mechanism for a multiple fault-current protective switch with a rotary crossbar

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP89420472A Division EP0377385B1 (en) 1988-12-14 1989-11-29 Operating mechanism for a multiple fault-current protective switch with a rotary crossbar
EP89420472.6 Division 1989-11-29

Publications (3)

Publication Number Publication Date
EP0602024A2 true EP0602024A2 (en) 1994-06-15
EP0602024A3 EP0602024A3 (en) 1994-09-14
EP0602024B1 EP0602024B1 (en) 1997-07-23

Family

ID=9373014

Family Applications (2)

Application Number Title Priority Date Filing Date
EP89420472A Expired - Lifetime EP0377385B1 (en) 1988-12-14 1989-11-29 Operating mechanism for a multiple fault-current protective switch with a rotary crossbar
EP94420082A Expired - Lifetime EP0602024B1 (en) 1988-12-14 1994-03-17 Operating mechanism for a multipolar fault-current protective switch with a rotary crossbar

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP89420472A Expired - Lifetime EP0377385B1 (en) 1988-12-14 1989-11-29 Operating mechanism for a multiple fault-current protective switch with a rotary crossbar

Country Status (6)

Country Link
EP (2) EP0377385B1 (en)
DE (2) DE68920565T2 (en)
ES (2) ES2106481T3 (en)
FR (1) FR2640423B1 (en)
PT (1) PT92560B (en)
ZA (1) ZA899466B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2280406A1 (en) * 2009-07-29 2011-02-02 Hager Electro Sas Electrical appliance for multipolar protection with remote triggering.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4428219C2 (en) * 1994-08-10 2003-11-13 Felten & Guilleaume Ag Cover for summation current transformers
DE102009007586A1 (en) 2009-02-05 2010-08-19 Saia-Burgess Dresden Gmbh Tripping device, in particular for circuit breakers

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6610419U (en) * 1963-09-19 1974-01-03 Schutzapp Ges Paris & Co Mbh K FAULT CURRENT CIRCUIT BREAKER
DE1563671B2 (en) * 1966-03-16 1974-09-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen Residual current circuit breaker
DE2504007A1 (en) * 1974-02-08 1975-08-14 Schrack Elektrizitaets Ag E Overload protective cct. breaker - has socket with switching contacts as separate component module with integral support
FR2337933A1 (en) * 1976-01-09 1977-08-05 Legrand Sa High sensitivity differential relay - acts on the vectorial sum of network currents and has pinion magnification
FR2451098A1 (en) * 1978-03-02 1980-10-03 Felten & Guilleaume Ag LEAKAGE CURRENT CIRCUIT BREAKER WITH PLUG-IN MOUNT
EP0245834A2 (en) * 1986-05-14 1987-11-19 General Electric Company Trip actuator for molded case circuit breaker
EP0275750A1 (en) * 1986-12-29 1988-07-27 Merlin Gerin Bipolar differential interrupter with fault indicator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6610419U (en) * 1963-09-19 1974-01-03 Schutzapp Ges Paris & Co Mbh K FAULT CURRENT CIRCUIT BREAKER
DE1563671B2 (en) * 1966-03-16 1974-09-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen Residual current circuit breaker
DE2504007A1 (en) * 1974-02-08 1975-08-14 Schrack Elektrizitaets Ag E Overload protective cct. breaker - has socket with switching contacts as separate component module with integral support
FR2337933A1 (en) * 1976-01-09 1977-08-05 Legrand Sa High sensitivity differential relay - acts on the vectorial sum of network currents and has pinion magnification
FR2451098A1 (en) * 1978-03-02 1980-10-03 Felten & Guilleaume Ag LEAKAGE CURRENT CIRCUIT BREAKER WITH PLUG-IN MOUNT
EP0245834A2 (en) * 1986-05-14 1987-11-19 General Electric Company Trip actuator for molded case circuit breaker
EP0275750A1 (en) * 1986-12-29 1988-07-27 Merlin Gerin Bipolar differential interrupter with fault indicator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2280406A1 (en) * 2009-07-29 2011-02-02 Hager Electro Sas Electrical appliance for multipolar protection with remote triggering.
FR2948814A1 (en) * 2009-07-29 2011-02-04 Hager Electro Sas MULTIPOLAR PROTECTION ELECTRICAL APPARATUS WITH REMOTE TRIGGERING.

Also Published As

Publication number Publication date
FR2640423B1 (en) 1991-10-04
FR2640423A1 (en) 1990-06-15
ZA899466B (en) 1990-08-29
EP0377385A1 (en) 1990-07-11
DE68928206T2 (en) 1998-01-15
DE68920565T2 (en) 1995-08-17
PT92560A (en) 1990-06-29
EP0602024A3 (en) 1994-09-14
ES2106481T3 (en) 1997-11-01
EP0602024B1 (en) 1997-07-23
DE68928206D1 (en) 1997-09-04
EP0377385B1 (en) 1995-01-11
PT92560B (en) 1995-09-12
ES2069604T3 (en) 1995-05-16
DE68920565D1 (en) 1995-02-23

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