EP2605264B1 - Dispositif d'actionnement des contacts auxiliaires dans un appareil de coupure électrique - Google Patents

Dispositif d'actionnement des contacts auxiliaires dans un appareil de coupure électrique Download PDF

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Publication number
EP2605264B1
EP2605264B1 EP12306325.7A EP12306325A EP2605264B1 EP 2605264 B1 EP2605264 B1 EP 2605264B1 EP 12306325 A EP12306325 A EP 12306325A EP 2605264 B1 EP2605264 B1 EP 2605264B1
Authority
EP
European Patent Office
Prior art keywords
crank arm
shaft
aforementioned
contacts
called
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.)
Active
Application number
EP12306325.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2605264A1 (fr
Inventor
Alain Brouillat
Patrice Garavelli
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 Industries SAS
Original Assignee
Schneider Electric Industries SAS
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Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP2605264A1 publication Critical patent/EP2605264A1/fr
Application granted granted Critical
Publication of EP2605264B1 publication Critical patent/EP2605264B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/46—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs

Definitions

  • the present invention relates to a device for actuating the auxiliary contacts intended to signal the state of the main contacts in an electrical switchgear, said device comprising a connecting rod hingedly connected by a said first of its ends to a shaft. said first operation of the main contacts and its opposite end, said second, to a crank actuating the auxiliary contacts rotatably mounted relative to the support of the apparatus between a first and a second position respectively corresponding to an open position and to a closed position of the main contacts of the apparatus, said crank being coupled to said shaft said first such that, in the open position of the main contacts, the crank is in the aforementioned first position, while in the closed position of the main contacts, the crank is in the second position mentioned above.
  • auxiliary contacts intended for example to indicate the status of the main power contacts.
  • the document EP 0 454 018 A2 discloses a device for actuating the auxiliary contacts according to the preamble of claim 1.
  • these auxiliary contacts are actuated by a system of rods which takes its movement on the control device of the main contacts.
  • this control system of the main contacts is a relatively imprecise mechanical system on the one hand, that many parts are set in motion with a long kinematic chain and secondly, that the closing shocks and opening of the main contacts can generate rebounds in the control system.
  • the present invention solves these problems and proposes a device for actuating the auxiliary contacts in an electrical protection device, of simple design and making reliable the switching of the auxiliary contacts, and an electrical protection device comprising such a device.
  • the subject of the present invention is a device for actuating the auxiliary contacts according to claim 1.
  • the aforementioned auxiliary contacts comprise at least one auxiliary contact fixed relative to the support of the device and at least one movable auxiliary contact integral with the crank.
  • the aforementioned resilient bistable device comprises a device with a telescopic rod, said device comprising a first and a second rod mounted sliding relative to each other, and around which is mounted a spring, one of said rods being hingedly connected by its free end to the frame of the apparatus, while the other of the rods is hingedly connected by its free end to the crank, said spring being supported by one of its ends on a bearing surface belonging to the first rod and its opposite end on a bearing surface belonging to the second rod.
  • the invention also relates to an electrical protection device comprising a device for actuating the auxiliary contacts having the characteristics mentioned above.
  • this device is a switch or a circuit breaker high or medium voltage or low voltage power.
  • a part of the mechanism of a switch I medium voltage is shown, said mechanism comprising an actuating device D auxiliary contacts according to the invention.
  • This switch comprises so-called main contacts (not shown), comprising main movable contacts driven by a not shown control shaft mechanically connected to said first shaft of the crank 1, said movable contacts being intended to cooperate with fixed main contacts .
  • This mechanism also comprises, in a manner known per se, auxiliary contacts whose function, in this particular embodiment of the invention, is to give an indication of the closed or open state of the main contacts.
  • auxiliary contacts are located between two flanges 2 belonging to a support said supporting auxiliary contacts, such as the flange shown in the figures, and comprise so-called fixed auxiliary contacts and so-called mobile auxiliary contacts, said auxiliary contacts called mobile being integral with a shaft (not visible in the figures) of axis Y adapted to be driven by a crank 4, which crank is driven by the actuating device D according to the invention between a position in which the auxiliary movable contacts are moved away from their respective fixed contacts, and a position in which the auxiliary moving contacts are in electrical contact with their respective fixed contacts.
  • these contacts may be three-slot contacts having one input and two outputs.
  • This crank 4 is connected in an articulated manner by one end 4a to the frame C of the switch, being secured at the same time to the same end, to the shaft Y supporting the auxiliary moving contacts, and is secured in a manner articulated by its opposite end 4b, to a shaft 3 connected in a hinged manner to a telescopic spring device 7.
  • This crank 4 is also mechanically connected to the actuating device D according to the invention in the manner to be described in what follows. follows.
  • This actuating device D comprises, as in the devices of the prior art, a rod 5 having a first end 5a hingedly connected to the crank 1 of said first shaft, and a second end 5b opposite the first , hingedly connected to the aforementioned crank 4 at a point between the hinge axis Y of the crank 4 to the frame C and the end 4b of the crank supporting the shaft 3 connected in an articulated manner to the telescopic device.
  • the said first shaft is a secondary shaft rotatably connected to the drive shaft of the main contacts.
  • the connecting rod 5 comprises at its first end 5a, a hole 6 through which the hinge axis X of the connecting rod 5 passes to the crank 1.
  • the actuating device D of the auxiliary contacts comprises a telescopic device 7 having a spring 9 comprising a rod 8 constituted by two sliding parts with respect to each other 8a, 8b, respectively a first part 8a hingedly connected by its end free on the frame C of the mechanism, and a second portion 8b hingedly connected to the crank 4, the aforementioned spring 9 being mounted around said rods 8a, 8b.
  • This spring 9 is supported by one of its ends on a bearing surface 8c belonging to an end portion of the portion 8a of the rod hingedly connected to the frame, while the opposite end of the spring 9 is resting on a bearing surface 8d belonging to an end portion belonging to the second rod portion 8b 8, which is hingedly connected to the crank 4.
  • the spring 9 is shaped and dimensioned so that when it is in the deployed position, it recalls the crank 4 to the two aforementioned first and second stable positions corresponding to an open position and to a closed position of the auxiliary contacts, these positions respectively corresponding to an open position and to a closed position of the contacts key.
  • the main contacts of the switch I are closed.
  • the crank 4 is supported on a stop portion 10 of the support of the auxiliary contacts, thanks to the spring 9 of the bistable system.
  • the position of the crank 4 is independent of the position of the said first shaft thanks to the so-called incomplete connection (6, X) of the connecting rod 5 with the crank 1 of the shaft said first, which connection makes it possible to decoupling of the shaft 1 and the rod 5 above from the moment when the spring 9 begins to drive the crank, after the passage of a dead point crossing line P, position in which the longitudinal axis Z of the parts of rod 8a, 8b and spring 9 passes through the hinge axis Y of the crank 4 relative to the frame of the device, this axis corresponding to the axis of rotation of the auxiliary contacts.
  • the hinge axis X moves in the light 6 towards the other end 6b said second light 6 of the rod 5 so that the forces exerted on the crank 4 by the spring 9 in this second part of movement do not produce stress on the drive shaft 1 of the main contacts.
  • the hinge axis X is located near the so-called second end 6b of the light 6 opposite the first 6a and is therefore not in contact with the end of the light , the actual stop being at 11.
  • the drive shaft 1 of the main contacts is coupled to that Y causing the auxiliary contacts in that the X axis is at the second end 6b of the slot 6, this axis for driving the rod by the shaft.
  • the X axis begins to move in the light 6, this having the effect of gradually disconnecting the drive shaft 1 of the main contacts and the connecting rod 5, and thereby the two shafts 1, Y respectively driving the main contacts and auxiliary contacts.
  • the present invention makes it possible to solve the potential switching faults of the auxiliary contacts and thus to improve the quality of the information given to the customers on the status of the main contacts.
  • This is done by making the switching of the auxiliary contacts independent of the variations of the operating system of the main contacts, thanks to the partial mechanical decoupling between the drive shaft of the main movable contacts and the drive shaft of the moving auxiliary contacts.
  • This mechanical decoupling is advantageously achieved by means of the bistable spring device in combination with the incomplete connection between the connecting rod and the control shaft of the main contacts.
  • This partial mechanical decoupling makes it possible to separate the two shafts for low angular deflections of said shafts (rebounds ...), to make up games, and to avoid the creation and transmission of constant residual mechanical forces in the linkage links.
  • This bistable device with spring makes it possible to obtain precise positioning of the crank with respect to the support of the auxiliary contacts, thanks to the abutment carried out by the spring having a motor function, guaranteeing the end of travel of the crank in the open position or closed main contacts.
  • the switching points are achieved repeatedly by the bistable driver in combination with the incomplete link means.
  • the design of the device makes it possible to create a short and precise kinematic chain involving three dimensions of parts namely a dimension on the crank 4, a dimension on the auxiliary contact block and a dimension on the auxiliary contact support 10,11.
  • the axis of articulation of the rod in two parts supporting the spring on the crank may be the same as the axis of articulation of the connecting rod on the crank.
  • the spring bistable device may be replaced by an assembly comprising rotating springs taken from one side on the crank and the other on a fixed support.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP12306325.7A 2011-12-15 2012-10-25 Dispositif d'actionnement des contacts auxiliaires dans un appareil de coupure électrique Active EP2605264B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1103847A FR2984588B1 (fr) 2011-12-15 2011-12-15 Dispositif d'actionnement des contacts auxiliaires dans un appareil de coupure electrique

Publications (2)

Publication Number Publication Date
EP2605264A1 EP2605264A1 (fr) 2013-06-19
EP2605264B1 true EP2605264B1 (fr) 2017-09-13

Family

ID=47071205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12306325.7A Active EP2605264B1 (fr) 2011-12-15 2012-10-25 Dispositif d'actionnement des contacts auxiliaires dans un appareil de coupure électrique

Country Status (3)

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EP (1) EP2605264B1 (zh)
CN (1) CN103165304B (zh)
FR (1) FR2984588B1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106847638A (zh) * 2017-03-14 2017-06-13 江苏高博锐电气有限公司 一种外挂辅助触头
DE102018201913A1 (de) * 2018-02-07 2019-08-08 Siemens Aktiengesellschaft Modul für einen Drehantrieb eines elektrischen Schalters, elektrischer Schalter mit solch einem Modul und Verfahren zum Schalten eines elektrischen Schalters
CN112705808B (zh) * 2020-12-27 2022-06-07 南昌明高科技有限公司 一种smt阶梯模板焊接方法及装置
US11715612B2 (en) 2020-12-29 2023-08-01 Schneider Electric USA, Inc. Low impact auxiliary switch mechanically operated contacts (MOC) mechanism

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE482394A (zh) * 1943-03-15
FR2589626B1 (fr) * 1985-10-31 1989-03-03 Merlin Gerin Mecanisme de commande d'un disjoncteur equipe d'un systeme accumulateur d'energie
NL8803018A (nl) * 1988-12-08 1990-07-02 Holec Syst & Componenten Aandrijfmechanisme voor schakelaar.
DE4013272A1 (de) * 1990-04-26 1991-10-31 Abb Patent Gmbh Elektrisches schaltgeraet
FR2777694B1 (fr) * 1998-04-17 2000-05-26 Schneider Electric Ind Sa Bloc auxiliaire de signalisation adaptable a un disjoncteur de protection

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
FR2984588B1 (fr) 2015-06-12
CN103165304A (zh) 2013-06-19
CN103165304B (zh) 2018-09-21
EP2605264A1 (fr) 2013-06-19
FR2984588A1 (fr) 2013-06-21

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