EP3255648B1 - Module de commande compact pour dispositifs de réinitialisation automatique - Google Patents

Module de commande compact pour dispositifs de réinitialisation automatique Download PDF

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Publication number
EP3255648B1
EP3255648B1 EP17000938.5A EP17000938A EP3255648B1 EP 3255648 B1 EP3255648 B1 EP 3255648B1 EP 17000938 A EP17000938 A EP 17000938A EP 3255648 B1 EP3255648 B1 EP 3255648B1
Authority
EP
European Patent Office
Prior art keywords
micro
switch
module according
movable
control module
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
EP17000938.5A
Other languages
German (de)
English (en)
Other versions
EP3255648A1 (fr
Inventor
Domenico Bosatelli
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.)
Gewiss SpA
Original Assignee
Gewiss SpA
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Filing date
Publication date
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Publication of EP3255648A1 publication Critical patent/EP3255648A1/fr
Application granted granted Critical
Publication of EP3255648B1 publication Critical patent/EP3255648B1/fr
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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
    • H01H71/66—Power reset mechanisms
    • H01H71/68—Power reset mechanisms actuated by electromagnet
    • 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
    • H01H71/42—Induction-motor, induced-current, or electrodynamic release mechanisms
    • 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
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • 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
    • H01H71/24—Electromagnetic mechanisms
    • 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2481—Electromagnetic mechanisms characterised by the coil design
    • 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
    • H01H71/465—Self-contained, easily replaceable microswitches
    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7463—Adjusting only the electromagnetic mechanism

Definitions

  • the present invention relates to a compact control module for automatic reset devices.
  • an automatic reset device allows to automatically reset a residual current operated circuit breaker following a release thereof, after checking the correct operation of the system.
  • Residual current operated circuit breakers are normally provided in domestic and industrial systems to prevent a fault current from causing danger for users and loads connected to the electrical line.
  • the residual current operated circuit breaker upon detecting the presence of the fault current, releases the line, thus interrupting the supply of power to the load or loads arranged downstream.
  • the residual current operated circuit breaker After the release of the residual current operated circuit breaker, and once the correct operating conditions for the system have been restored, the residual current operated circuit breaker must be reset.
  • This reset normally occurs manually by acting on an adapted reset lever.
  • a method for detecting earth insulation faults is disclosed for example in EP1569314 , while an example of a system for detecting overcurrent faults is disclosed in EP2136383 .
  • the value of the circulating current depends on the value of the impedance of the downstream circuit.
  • the manufacturer sets at this point a reset current threshold, above which the automatic reset device recloses the associated protection device and below which the automatic re-closure of the associated protection device is inhibited.
  • the aim of the present invention is to provide a control module for reset devices that overcomes the drawbacks of the cited prior art.
  • an object of the invention is to provide a control module that is extremely compact.
  • Another object of the invention is to provide a module that can be combined with any type of protection device.
  • a further object of the present invention is to provide a control module that allows to considerably reduce the detection times of the overcurrent fault.
  • Another object of the invention is to provide a control module that is capable of performing an independent fault detection of each pole so that all the fault combinations, for example 1P, 1P+N, 2P, 3P, 3P+N, 4P, can be detected by the module.
  • Another object is to provide a control module that is reliable, of low cost and easy to manufacture.
  • control module generally designated by the reference numeral 1, has a containment body 2 provided with a passage 3 in which an electric cable 4 is inserted.
  • a micro-switch 5 is provided with a control lever 6 which is actuated by a movable armature 7.
  • a fixed core or yoke 8 at least partially arranged around the cable 4, attracts the movable armature 7 in contrast with the action of a return spring 9.
  • control module 1 is combined with a reset device, which is not shown in the figures.
  • the electric cable 4 is inserted in the passage 3, like a sort of TA, and the consequent magnetic field generates an attraction force between the movable armature 7 and the core 8.
  • the micro-switch 5 opens the contact which, monitored by the electronic board of the associated reset device, inhibits the optional re-closure operation of the circuit breaker.
  • the activation threshold of the device is adjusted to an initial value by means of the return spring 9.
  • the installation technician may adjust the activation threshold of the device by providing different numbers of turns 41 of the external cable 4.
  • the number of turns is selected as a function of the nominal current and of the magnetic intervention curve of the breaker with which the module 1 is associated.
  • the control module according to the present invention is an electromechanical device that utilizes the electromagnetic field generated by the fault current and is constituted essentially by the two magnetic members, the fixed core 8 and the movable armature 7, which are crossed by the magnetic field generated by the fault current, and the actuation mechanism.
  • the force generated by the electromagnetic field due to the interaction between the fixed member and the movable member, causes the movement of the movable member, i.e., the armature 7, which acts directly on the micro-switch 5, which can be interfaced with the electronic control device.
  • the electronic control device detects the signal that arrives from the micro-switch 5 and immediately inhibits the automatic re-closure of the associated protection device.
  • control module which, with respect to control systems of the background art, has no electrical wiring with box terminals and, inside the device, no solenoid generating the electromagnetic attraction force for the movement of the metallic components for the activation of the micro-switch but utilizes directly the electromagnetic field generated by the current that flows through the electric cable 4 inserted in the passage 3.
  • control module according to the present invention is reliable, low in cost and easy to manufacture.
  • the present control module allows to reduce considerably the overcurrent fault detection times, since it is activated simultaneously with the opening of the protection device.
  • the present control module is arranged on each phase and allows the independent detection of the fault of one pole with respect to the other.
  • control module according to the present invention is associable with any type of protection device.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Keying Circuit Devices (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Controls For Constant Speed Travelling (AREA)
  • Selective Calling Equipment (AREA)
  • Safety Devices In Control Systems (AREA)

Claims (7)

  1. Module de commande pour dispositifs de réinitialisation automatique, comprenant un corps de contention (2) comportant un conducteur (4) et un microcommutateur (5), ledit conducteur pouvant être connecté à un circuit électrique, ledit microcommutateur étant connecté à un dispositif de réinitialisation; ledit module comprenant en outre un noyau fixe (8) et un élément mobile (7) qui sont soumis à un champ électromagnétique généré par un courant qui passe dans ledit conducteur; ledit élément mobile étant mobile d'une position active dudit microcommutateur à une position inactive dudit microcommutateur; ledit élément mobile étant mobile par rapport à un ressort (9); une force générée par ledit champ électromagnétique provoquant le déplacement dudit élément mobile; ledit module étant caractérisé en ce que ledit corps de contention comprend au moins un passage à travers lequel est inséré ledit conducteur constitué d'un câble électrique.
  2. Module selon la revendication 1, caractérisé en ce que ledit microcommutateur est agencé à l'intérieur dudit corps de contention et comprend un levier d'actionnement actionné par ledit élément mobile.
  3. Module selon la revendication 2, caractérisé en ce que ledit élément mobile est constitué par une armature mobile.
  4. Module selon la revendication 3, caractérisé en ce que ledit élément fixe est constitué par un noyau fixe qui entoure au moins partiellement ledit câble électrique.
  5. Module selon la revendication 4, caractérisé en ce que ledit câble électrique inséré dans ledit passage génère un champ magnétique quand il est traversé par un courant; ledit champ magnétique générant une force d'attraction magnétique entre ladite armature mobile et ledit noyau fixe; quand ladite force d'attraction dépasse la force dudit ressort et la force d'activation dudit levier dudit microcommutateur, ledit microcommutateur ouvre un contact qui, surveillé par un dispositif de réinitialisation, inhibe le fonctionnement possible d'un dispositif de protection associé audit dispositif de réinitialisation.
  6. Module selon la revendication 5, caractérisé en ce que le seuil d'activation dudit microcommutateur est ajusté à une valeur initiale au moyen dudit ressort.
  7. Procédé d'ajustement du seuil d'activation du microcommutateur d'un module de commande selon la revendication 1, caractérisé en ce que ledit seuil d'activation est ajusté en fournissant un nombre différent de tours dudit câble en dehors dudit corps de contention en fonction du courant nominal et de la courbe de déclenchement magnétique du dispositif de protection.
EP17000938.5A 2016-06-08 2017-06-05 Module de commande compact pour dispositifs de réinitialisation automatique Active EP3255648B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITUA2016A004207A ITUA20164207A1 (it) 2016-06-08 2016-06-08 Modulo di controllo compatto, per dispositivi di riarmo automatico

Publications (2)

Publication Number Publication Date
EP3255648A1 EP3255648A1 (fr) 2017-12-13
EP3255648B1 true EP3255648B1 (fr) 2019-01-23

Family

ID=57184614

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17000938.5A Active EP3255648B1 (fr) 2016-06-08 2017-06-05 Module de commande compact pour dispositifs de réinitialisation automatique

Country Status (4)

Country Link
EP (1) EP3255648B1 (fr)
CN (1) CN107481900B (fr)
ES (1) ES2712431T3 (fr)
IT (1) ITUA20164207A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113643943A (zh) * 2021-07-29 2021-11-12 深圳市美兆环境股份有限公司 大流量排风光氢离子病毒设备控制电路

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4536758A (en) * 1983-03-10 1985-08-20 Schweitzer Edmund O Jun Fault indicator with push button reset
CN2081982U (zh) * 1991-01-23 1991-07-31 杨干 微型强电流累计计时器
FR2779568B1 (fr) * 1998-06-04 2000-07-13 Schneider Electric Ind Sa Dispositif de coupure electrique comprenant un dispositif de declenchement differentiel et disjoncteur comprenant un tel dispositif
ES2290657T3 (es) 2004-02-27 2008-02-16 Gewiss S.P.A. Dispositivo de reposicion automatica particularmente para disyuntores que funcionan con corriente residual y similares.
CN100485406C (zh) * 2005-04-21 2009-05-06 黄汝明 铁芯磁感应强度最大值的检测方法及铁芯线圈匝数的计算方法
CN1877351A (zh) * 2005-12-24 2006-12-13 姜虹 电缆故障检测装置
CN2906901Y (zh) * 2006-06-23 2007-05-30 德力西集团有限公司 脱扣与复位的动作机构
ITMI20081092A1 (it) * 2008-06-17 2009-12-18 Gewiss Spa Dispositivo di controllo per apparecchiature di riarmo automatico
JP5366857B2 (ja) * 2010-02-22 2013-12-11 三菱電機株式会社 回路遮断器
CN202695181U (zh) * 2012-07-02 2013-01-23 三实电器(漳州)有限公司 具有远程控制复位功能的行程开关
DE102014207301A1 (de) * 2014-04-16 2015-10-22 Siemens Aktiengesellschaft Elektromagnetischer Auslöser für ein elektromechanisches Schaltgerät
CN204012684U (zh) * 2014-07-18 2014-12-10 施耐德电气（中国）有限公司 具备自复位功能的多相过压/欠压故障保护装置
CN104931854A (zh) * 2015-06-09 2015-09-23 天津智联恒信电力设备股份有限公司 一种输电线路故障指示装置

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
EP3255648A1 (fr) 2017-12-13
CN107481900A (zh) 2017-12-15
ES2712431T3 (es) 2019-05-13
ITUA20164207A1 (it) 2017-12-08
CN107481900B (zh) 2021-10-29

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