EP1916691B1 - Vorrichtung zur automatischen Zurücksetzung und Selbstprüfung, insbesondere für durch Reststrom betriebene Leistungsschalter und Ähnliches - Google Patents

Vorrichtung zur automatischen Zurücksetzung und Selbstprüfung, insbesondere für durch Reststrom betriebene Leistungsschalter und Ähnliches Download PDF

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Publication number
EP1916691B1
EP1916691B1 EP07013168A EP07013168A EP1916691B1 EP 1916691 B1 EP1916691 B1 EP 1916691B1 EP 07013168 A EP07013168 A EP 07013168A EP 07013168 A EP07013168 A EP 07013168A EP 1916691 B1 EP1916691 B1 EP 1916691B1
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EP
European Patent Office
Prior art keywords
lever
circuit breaker
contacts
drum
bar
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.)
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Application number
EP07013168A
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English (en)
French (fr)
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EP1916691A2 (de
EP1916691A3 (de
Inventor
Domenico Bosatelli
Sergio Pianezzola
Augusto Contardi
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
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Gewiss SpA
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Publication of EP1916691A2 publication Critical patent/EP1916691A2/de
Publication of EP1916691A3 publication Critical patent/EP1916691A3/de
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Publication of EP1916691B1 publication Critical patent/EP1916691B1/de
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Classifications

    • 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
    • H01H83/04—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 with testing means for indicating the ability of the switch or relay to function properly
    • 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
    • H01H71/70—Power reset mechanisms actuated by electric motor
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0264—Mountings or coverplates for complete assembled circuit breakers, e.g. snap mounting in panel
    • H01H71/0271—Mounting several complete assembled circuit breakers together
    • H01H2071/0278—Mounting several complete assembled circuit breakers together with at least one of juxtaposed casings dedicated to an auxiliary device, e.g. for undervoltage or shunt trip
    • 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
    • H01H71/462—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts housed in a separate casing, juxtaposed to and having the same general contour as the main casing

Definitions

  • the present invention relates to an automatic reset and self-test device, particularly for residual current operated circuit breakers and the like.
  • the invention relates to a device which allows to perform automatically a test of the circuit and subsequently to reset automatically a residual current operated circuit breaker.
  • EP-1562213 discloses a residual current-operated circuit breaker, with autodiagnostic and autoreset functions, provided with a control unit for automatically open the breaker, in order to perform a test, and a bypass circuit that maintains the power supply during such test.
  • DE-102005024270 discloses an apparatus for remotely actuating a manual actuator of a circuit breaker by means of an electric motor that operates an actuation lever by means of a drive mechanism constituted by gears.
  • EP-1487003 discloses an automatic reset device that automatically resets a circuit breaker after tripping; the reset device has a mechanism operated by a thermal actuator.
  • the residual current operated circuit breaker when it detects the presence of the fault current, releases the line, thus interrupting the power supply 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.
  • the operating conditions often restore themselves spontaneously because the fault is of a transient type caused by overvoltages.
  • This reset normally occurs manually by acting on a reset lever.
  • the residual current operated circuit breakers of the known type are provided with a test button, by means of which it is possible to release the breaker, simulating a fault, in order to check the correct operation of the release system.
  • breakers In order to obviate the drawback of the interruption of electric power during the test, breakers have been introduced which are provided with secondary contacts ensuring the electric power supply when the primary contacts are released for testing the system.
  • the aim of the present invention is to provide an automatic reset device, particularly for residual current operated circuit breakers and the like, which allows to test the system without interrupting the electric power supply to user devices.
  • an object of the invention is to provide an automatic reset device which is highly reliable, relatively simple to provide and at competitive costs.
  • Another object of the invention is to provide a device capable of performing the test periodically and in a fully automatic and autonomous manner, without operator interventions.
  • a device according to the invention comprises a containment body 2, which has the classic standardized shape and forms, at a rear face 3, a means for mating with other devices associated with a DIN rail (not shown).
  • the containment body 2 has, at its front face, a protrusion 4 in which an actuation drum 5 is positioned which is associated with a gear train 6 by means of a bar 7.
  • One end of the bar 7 is pivoted to a first gear 61 of the gear train 6 and the other end can slide in a slot 8 of a member being rotatably associated with the drum 5.
  • the gear train 6 draws motion from a worm screw 9 actuated by an electric motor 10, more particularly a single-phase synchronous motor.
  • the free end of the worm screw 9 is associated with a one-way bearing, or freewheel 11, allowing the worm screw to turn round in one direction only; the single-phase synchronous motor might in fact start to turn in both directions and it is instead necessary that the gear train rotates always in the same direction.
  • the first gear 61 of the gear train 6 is rigidly coupled to a crank 12 to which is connected a linkage 13 actuating a double actuation lever 14.
  • the crank 12 is constituted by a wheel provided with cams suitable to act on a first microswitch 15 for controlling the electric motor 10.
  • a second microswitch 16 is suitable to indicate the position of the handle or of the drum 5 which is connected kinematically thereto.
  • a circular lever 17 is provided with a tab 18 acting on the second microswitch 16.
  • the double actuation lever 14 comprises a slot 19 in which the free end of the linkage 13 slides and a bar 20 for actuating the secondary contacts; for this purpose the bar 20 has a portion 21 constituting a cross-member for connection to a residual current operated circuit breaker 101 coupled to the device 1.
  • the bar 20 is pivoted to a second lever 22 for actuating the secondary contacts which in turn is connected to a return spring 23 of the secondary contacts.
  • the second lever 22 for actuating the secondary contacts acts also on a third microswitch 24 indicating the position of the secondary contacts.
  • the device 1 is provided with a release system which intervenes in the case of tension failure during the self-test.
  • the release system is based on a minimum-tension coil 25, which acts, by means of its piston 26, on a coil lever 27.
  • the coil lever 27 is suitable to trip a tripping lever 28.
  • the tripping lever 28 is provided with a return spring 29 and is associated with the double actuation lever 14.
  • the device performs the self-test procedure again, restarting from the beginning.
  • the device 1 is constituted by a containment body having a standardized shape so that it can be arranged adjacent to other modules and most of all to a circuit breaker 101.
  • the mechanism of the reset device is connected to the mechanism of the circuit breaker 101 by means of a bar having a triangular cross-section that constitutes the rotation axis of the drum 5, so that the rotation of the drum 5 matches exactly the rotation of the drum of the circuit breaker 101 being provided with the usual external actuation lever.
  • the reset device 1 comprises a sliding access panel 50 suitable to cover the actuation lever 70 of the circuit breaker when the access panel 50 is in the closed position.
  • the function of the access panel 50 is to indicate the device activation or deactivation and prevent any accidental activation of it. In fact, it is obvious that the device must not reset automatically a circuit breaker which has been deactivated intentionally, for example for intervention on the line.
  • the access panel 50 deactivates the device when it is in the open position, by means of a deactivation lever 30 indicating the position of the access panel 50 to the electronic systems of the device.
  • the automatic reset device since in order to open the contacts of the breaker 101 it is necessary to act on the control lever 70; by opening the access panel 50, the automatic reset device is automatically deactived.
  • the operation of the automatic reset device is the following.
  • the microswitches 15, 16 and 24 are closed.
  • the secondary contacts are open due to the intervention of the return spring 23 acting on the actuation lever 22.
  • the electronic card of the device 1 checks the circuit and, if no anomalies have been detected, commands the actuation of the motor 10 which, by means of the worm screw 9 and the gear train 6, turns the drum 5, thus moving the handle of the circuit breaker into the initial position in which the main contacts are closed.
  • the device 1 is designed to perform automatically a test of the residual current operated circuit breaker.
  • This test can be performed with a preset frequency, for example every week.
  • the residual current operated circuit breaker is provided with secondary or auxiliary contacts being closed during the test, thus bypassing the main circuit of the circuit breaker.
  • the electronics of the device control the closure of the secondary contacts, placing the device in the condition shown in Figures 12 and 13 , in which both main and secondary contacts are closed.
  • the electronics start the motor 10, turning the drum 5 which closes the handle of the circuit breaker.
  • the main contacts get closed and the secondary contacts, by means of the minimum-voltage coil, get open, restoring the normal operating condition shown in Figures 7 and 8 .
  • the operation for testing and resetting the circuit breaker lasts only a few seconds.
  • the invention achieves the intended aim and objects, providing a device capable, in association with a residual current operated circuit breaker, of resetting the circuit breaker in case of inappropriate tripping and of performing periodic tests of the circuit breaker.
  • the materials used, as well as the dimensions, may of course be any according to the requirements and the state of the art.

Landscapes

  • Breakers (AREA)
  • Keying Circuit Devices (AREA)
  • Color Television Image Signal Generators (AREA)
  • Electronic Switches (AREA)

Claims (14)

  1. Automatische Rückstell- und Selbstprüfvorrichtung (1), insbesondere für mit Reststrom betriebene Leistungsschalter und dergleichen, dadurch gekennzeichnet, dass die Vorrichtung einen Behälterkörper (2) umfasst, der mit einer elektrischen Vorrichtung wie beispielsweise einem mit Reststrom betriebenen Leistungsschalter (101) verbunden werden kann, der mit Hauptkontakten und mit Neben- oder Hilfskontakten versehen ist, wobei der Behälterkörper (2) eine Trommel (5) umfasst, die kinematisch mit einer Steuerung zum Öffnen und Schließen der Hauptkontakte des Leistungsschalters verbunden ist, und einen Elektromotor (10), der für den Antrieb eines Getriebezugs (6) mittels einer Schnecke (9) geeignet ist und sich in nur einer Richtung dreht, um sowohl die Hauptkontakte als auch die Nebenkontakte zu schließen, und dass die Vorrichtung ferner ein erstes Zahnrad (61) des Getriebezugs (6) umfasst, das starr mit einer Kurbel (12) verbunden ist, und ein Gestänge (13), das mit der Kurbel (12) verbunden ist und einen Doppelbetätigungshebel (14) steuert, der einen Schlitz (19) aufweist, in dem das freie Ende des Gestänges (13) gleitet, und eine erste Stange (20) für die Betätigung der Nebenkontakte, wobei die erste Stange (20) ein Querelement (21) für die Verbindung mit dem Leistungsschalter (101) hat, der mit der Vorrichtung (1) gekoppelt ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Betätigungstrommel (5) mittels einer zweiten Stange (7) mit dem Getriebezug (6) verbunden ist, wobei ein Ende der Stange an dem ersten Zahnrad (61) des Getriebezugs (6) angelenkt ist und das andere Ende der zweiten Stange in einem Schlitz (8) eines mit der Trommel (5) fest verbundenen Elements gleiten kann.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Elektromotor (10) ein Einphasen-Synchronmotor ist.
  4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das freie Ende der Schnecke (9) mit einem Einweglager oder Freilauf (11) verbunden ist, der eine Drehung der Schnecke nur in einer Richtung erlaubt.
  5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Kurbel (12) durch ein Rad gebildet ist, das mit Nocken versehen ist, die geeignet sind, auf einen ersten Mikroschalter (15) für die Steuerung des Elektromotors (10) einzuwirken.
  6. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass diese einen zweiten Mikroschalter (16) umfasst, der geeignet ist, die Position der Trommel (5) oder eines Steuerelements zum Öffnen und Schließen der Hauptkontakte des Leistungsschalters (101) mittels eines kreisförmigen Hebels (17) anzuzeigen, der mit einer Nase (18) versehen ist, die auf den zweiten Mikroschalter (16) wirkt.
  7. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die erste Stange (20) an dem zweiten Hebel (22) angelenkt ist, für die Betätigung der Nebenkontakte, wobei der zweite Hebel (22) mit einer Rückstellfeder (23) der Nebenkontakte verbunden ist.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass der zweite Hebel (22) für die Betätigung der zweiten Kontakte auch auf einen dritten Mikroschalter (24) wirkt, der die Position der Nebenkontakte anzeigt.
  9. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie ein Freigabesystem umfasst, das im Falle eines Spannungsausfalls während des Selbsttests eingreift, um alle Kontakte des Leistungsschalters zu öffnen.
  10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass das Freigabesystem eine Mindestspannungs-Spule (25) hat, die mittels eines Kolbens (26) auf einen Schraubenhebel (27) wirkt, wobei der Schraubenhebel (27) geeignet ist, einen Auslösehebel (28) auszulösen.
  11. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Mechanismus der Rückstellvorrichtung mit dem Mechanismus des Leistungsschalters durch eine dritte Stange verbunden ist, die einen dreieckigen Querschnitt hat und die die Drehachse der Trommel (5) bildet, so dass die Drehung der Trommel (5) exakt mit der Drehung der Trommel des Leistungsschalters übereinstimmt, der mit dem üblichen externen Betätigungshebel versehen ist.
  12. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie eine verschiebbare Zugangsplatte (50) aufweist, die geeignet ist, einen Betätigungshebel (70) des Leistungsschalters (101) abzudecken, wenn die Zugangsplatte in der geschlossenen Position ist, wobei die Zugangsplatte geeignet ist, die Aktivierung oder Deaktivierung der Vorrichtung anzuzeigen und ihre versehentliche Aktivierung zu verhindern, wobei die Zugangsplatte die Vorrichtung, wenn sie sich in der offenen Position befindet, mittels eines Deaktivierungshebels (30) deaktiviert, der der Elektronik der Vorrichtung die Position der Zugangsplatte anzeigt.
  13. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie eine elektronische Steuerschaltung umfasst, die geeignet ist, einen automatischen Test des Leistungsschalters und andere Funktion zur Steuerung des nachgeschalteten Systems einschließlich Benutzervorrichtungen durchzuführen.
  14. Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, dass der Test mit einer voreingestellten Frequenz durchgeführt wird.
EP07013168A 2006-10-23 2007-07-05 Vorrichtung zur automatischen Zurücksetzung und Selbstprüfung, insbesondere für durch Reststrom betriebene Leistungsschalter und Ähnliches Active EP1916691B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT002033A ITMI20062033A1 (it) 2006-10-23 2006-10-23 Dispositivo di autotest e di riarmo automatico, particolarmente per interruttori differenziali e simili

Publications (3)

Publication Number Publication Date
EP1916691A2 EP1916691A2 (de) 2008-04-30
EP1916691A3 EP1916691A3 (de) 2009-06-24
EP1916691B1 true EP1916691B1 (de) 2010-10-27

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EP07013168A Active EP1916691B1 (de) 2006-10-23 2007-07-05 Vorrichtung zur automatischen Zurücksetzung und Selbstprüfung, insbesondere für durch Reststrom betriebene Leistungsschalter und Ähnliches

Country Status (6)

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EP (1) EP1916691B1 (de)
CN (1) CN101170027B (de)
AT (1) ATE486360T1 (de)
DE (1) DE602007010070D1 (de)
ES (1) ES2353883T3 (de)
IT (1) ITMI20062033A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021212829A1 (de) 2021-11-16 2023-05-17 Walter Biersack Einrichtung zum Laden von Elektrofahrzeugen

Families Citing this family (16)

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Publication number Priority date Publication date Assignee Title
NZ589818A (en) * 2008-06-26 2012-09-28 Easytest Pty Ltd Bypass device for testing rcd, bypass effective only after circuit breaker tripped
DE102008033148B4 (de) * 2008-07-15 2014-01-02 Siemens Aktiengesellschaft Verfahren zum Durchführen eines Selbsttests durch eine Fehlerstromschutzeinrichtung sowie Fehlerstromschutzeinrichtung
FR2940515B1 (fr) * 2008-12-19 2010-12-24 Schneider Electric Ind Sas Dispositif de telecommande et disjoncteur telecommande equipe d'un tel dispositif
WO2010076403A1 (fr) * 2008-12-19 2010-07-08 Schneider Electric Industries Sas Dispositif de télécommande et disjoncteur télécommandé equipe d'un tel dispositif
CN101783266B (zh) * 2009-09-29 2013-08-21 湖北盛佳电器设备有限公司 具有自动合闸功能的智能微型断路器
CN102938353B (zh) * 2009-09-29 2015-05-13 湖北盛佳电器设备有限公司 具有自动合闸功能的智能微型断路器
EP2339606B1 (de) * 2009-12-24 2012-07-11 Hager Electro Sas Elektrischer Verriegelungsmechanismus zum Schutz einer Leitung mit Differentialfunktion
CN102194619B (zh) * 2010-03-16 2014-08-13 施耐德电器工业公司 用于断路器的试验装置及具有该试验装置的断路器
FR2959594B1 (fr) * 2010-04-30 2012-04-20 Schneider Electric Ind Sas Dispositif de telecommande et disjoncteur telecommande equipe d'un tel dispositif.
CN102969209B (zh) * 2012-12-03 2016-02-10 杭州凯雅捷科技有限公司 一种自动重合闸传动机构
EP2750157B1 (de) * 2012-12-27 2015-06-24 Hager Electro Sas Selektiver Schutzschalter in einem modularen Gehäuse
CN103323226B (zh) * 2013-06-21 2016-01-20 国家电网公司 高压断路器操动机构负荷指数预测方法
GB2521188A (en) 2013-12-12 2015-06-17 Eaton Ind Netherlands Bv Alternating current circuit breaker with self-test capability
KR101890681B1 (ko) 2016-12-27 2018-09-28 엘에스산전 주식회사 기중 차단기의 위치표시장치
WO2023038556A1 (en) * 2021-09-07 2023-03-16 Alfanar Company Improved and simplified multi-function 2 -lever mechanism and improve miniature circuit breaker
CN113871266B (zh) * 2021-10-29 2022-06-21 佛山奇正电气有限公司 一种自动合闸的断路器

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ITMI20030988A1 (it) 2003-05-20 2004-11-21 Gewiss Spa Dispositivo di riarmo automatico per scatti intempestivi di interruttori ed apparecchiature elettriche di sicurezza in genere.
ITMI20030991A1 (it) * 2003-05-20 2004-11-21 Gewiss Spa Dispositivo di comando elettrico a distanza.
ES2280927T3 (es) 2004-02-06 2007-09-16 Gewiss S.P.A. Disyuntor accionado por corriente residual con funciones de autodiagnostico y reiniciacion automatica.
DE102005024270B3 (de) 2005-05-27 2006-10-19 Ellenberger & Poensgen Gmbh Vorrichtung zur Fernbetätigung eines Handbetätigers eines Schutzschalters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021212829A1 (de) 2021-11-16 2023-05-17 Walter Biersack Einrichtung zum Laden von Elektrofahrzeugen

Also Published As

Publication number Publication date
ATE486360T1 (de) 2010-11-15
ES2353883T3 (es) 2011-03-07
ITMI20062033A1 (it) 2008-04-24
EP1916691A2 (de) 2008-04-30
DE602007010070D1 (de) 2010-12-09
EP1916691A3 (de) 2009-06-24
CN101170027B (zh) 2012-11-28
CN101170027A (zh) 2008-04-30

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