EP0737991B1 - Elektrisches Gerät, insbesondere Leistungsschalter, ausgerüstet mit einer Sicherheitsvorrichtung - Google Patents

Elektrisches Gerät, insbesondere Leistungsschalter, ausgerüstet mit einer Sicherheitsvorrichtung Download PDF

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Publication number
EP0737991B1
EP0737991B1 EP96410025A EP96410025A EP0737991B1 EP 0737991 B1 EP0737991 B1 EP 0737991B1 EP 96410025 A EP96410025 A EP 96410025A EP 96410025 A EP96410025 A EP 96410025A EP 0737991 B1 EP0737991 B1 EP 0737991B1
Authority
EP
European Patent Office
Prior art keywords
contacts
handle
circuit breaker
open position
opening
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.)
Expired - Lifetime
Application number
EP96410025A
Other languages
English (en)
French (fr)
Other versions
EP0737991A1 (de
Inventor
Michel Lazareth
Philippe Delcambre
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
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.)
Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP0737991A1 publication Critical patent/EP0737991A1/de
Application granted granted Critical
Publication of EP0737991B1 publication Critical patent/EP0737991B1/de
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
    • H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H2009/288—Provisions relating to welded contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H9/281—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock

Definitions

  • the present invention aims to eliminate this danger by equipping the device concerned with an adequate safety device.
  • said predetermined threshold corresponds to a breaking force of essential components of the mechanism, and said breaking force is defined by a standard.
  • said opening of the housing is angularly offset from the intermediate position occupied by the recess of the lever in the welded state of the contacts, following the application of a force corresponding to said threshold predetermined
  • the partially shown apparatus in this case a circuit breaker 10, comprises a pair of contacts, one of which 11 is fixed and mounted on a support 12 which is connected, in a manner not shown, to one of the terminals of the circuit breaker and the other 13 of which is movable.
  • This movable contact is arranged at one end an arm 14 pivoting about an axis 15, called a movable contact arm.
  • Axis 15 is mounted on a plate 16 which also carries a hanging hook 17 articulated on an axis 18 secured to the plate 16.
  • the hanging hook is linked to one end a link 19, this end being articulated at a point 20 on said hook of attachment, the other end of the link 19 being articulated at a point 21 on a drum 22 rotatable around an axis 23 which carries a lever 24 for manual control.
  • the drum 22 is housed in an appropriate cavity of the circuit breaker housing and comprises a recess 25 which, when the contacts are open and the lever is brought into abutment against a stop integral with said case, coincides with an opening 27 made through the side walls of this case to allow passage of a sealing wire 28, the handle of a padlock or any other locking device.
  • the configuration of the components as represented by the Figure 1 corresponds to a normal situation, the contacts being free, not welded, and the joystick with manual control acting through the control mechanism, correctly on the moving contact.
  • FIG. 2 represents this same device 10 when the contacts 11 and 13 are soldered following A short-circuit. It can be seen that, although the contacts are closed, the handle 24 of manual control could be brought into abutment against the stop 26 and that the recess 25 has was brought next to the opening 27 formed in the side walls of the housing so that the lockout operation has been made possible. To arrive in this state, the operator had to force the lever, which has the effect of deforming the rod 19. The force applied is less than a limit value, or threshold defined by a standard. Beyond this threshold, the applied force causes a complete rupture of the mechanism but, below this threshold, the applied force only generates a deformation of the link which does not allow the operator to be aware of the danger due to the non-de-energization of the circuit.
  • a limit value or threshold defined by a standard. Beyond this threshold, the applied force causes a complete rupture of the mechanism but, below this threshold, the applied force only generates a deformation of the link which does not allow the operator to be aware of the danger due to
  • the device 30 shown in this case a circuit breaker, as before comprises a fixed contact 31 mounted on a support 32, a contact mobile 33 disposed at one end of an arm 34 pivoting about an axis 35.
  • This axis is carried by a plate 36 which also carries a hook 37 articulated on an axis 38 secured to this plate.
  • a link 39 is linked at a point 40 to said hook attachment 37 and at a point 41 to a drum 42, rotatable about an axis 43, which carries a manual control lever 44.
  • the drum 42 is provided with a recess 45 which, when the contacts 31 and 33 are open and the lever is brought to bear against a stop 46 secured to the housing (not shown) of the apparatus, coincides with an opening 47 formed through the side walls of this housing to allow the passage of a wire sealing 48 or the handle of a padlock.
  • FIG. 4 represents the apparatus 30 in a configuration where the contacts 31 and 33 are soldered due to a short circuit.
  • Handle 44 is in an intermediate position without deformation of the link 39.
  • the recess 45 does not coincide with the opening 47, so that padlocking of the device is not possible.
  • the apparatus When the operator exerts a force on the lever 44 in the opening direction, the apparatus can be brought into a position which corresponds to that of FIG. 5.
  • the configuration shown corresponds to a limit force, or normalized threshold below which the mechanism is not completely destroyed, and beyond which the essential components of the mechanism are deteriorated. It can be seen that, in this case, the control lever 44 manual is not in abutment against the stop 46 and that the recess 45 does not coincide with opening 47 so that padlocking of the device is not possible. If the operator pushes the joystick by applying a force which is greater than said threshold, the deterioration of essential components of the device is inevitable.
  • Figure 6 shows the device in the unlocked open position, following a normal triggering. We notice that the recess does not coincide with the opening 47, preventing lockout. The latter is only possible if the lever 44 is pushed in. support against the stop 46.
  • FIG. 6 it is possible to provide a compression spring 50 which is mounted such that it tends to oppose the movement of the lever 44 in its final phase, that is to say towards the support against the stop 46, when the contacts 31 and 33 are free.
  • the spring 50 opposes a determined resistance on the lever in the displacement phase in which the contacts are already open, but where the lockout position has not yet been reached. This resistance makes it possible to make the user attentive to his approach by forcing him to support his effort on the joystick.
  • the spring could be replaced by a friction, or any other organ having the same functions, allowing to attract the attention of the user.

Landscapes

  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Braking Systems And Boosters (AREA)
  • Braking Arrangements (AREA)

Claims (6)

  1. Leistungsschalter mit einem Schaltmechanismus, der
    einen Handknebel (44) mit einer Drehtrommel (42),
    eine Sicherheitsvorrichtung, die dazu dient, eine Verriegelung des Handknebels zu verhindern, wenn aufgrund eines Kurzschlusses ein beweglicher Kontakt (33) mit einem feststehenden Kontakt (31) verschweißt ist, wobei der genannte Handknebel (44) durch Drehung um eine Achse (43) entweder in eine normale AUS-Stellung entsprechend einer Offenstellung der genannten Kontakte, oder in eine normale EIN-Stellung entsprechend einer Schließstellung der genannten Kontakte verbracht werden kann,
    einen Schwenkarm (34), der den genannten beweglichen Kontakt (33) trägt,
    sowie eine in der Trommel (42) ausgebildete Ausnehmung (45) umfaßt, die in eine Flucht mit einer im Gehäuse ausgebildeten Öffnung (47) gebracht werden kann, um die Durchführung eines Plombier- oder Verriegelungsmittels zu ermöglichen,
    dadurch gekennzeichnet, daß
    ein Anschlag (46) um ein bestimmtes Winkelmaß gegenüber der normalen AUS-Stellung des Handknebels (44) versetzt angeordnet ist, um als Endabstützung des genannten Handknebels in der Verriegelungs-AUS-Stellung zu dienen, wobei die Überführung von der normalen AUS-Stellung in die Verriegelungs-AUS-Stellung durch einen bei nicht-verschweißten Kontakten zulässigen Überhub des Handknebels (44) erfolgt,
    und daß bei verschweißten Kontakten jedes zwangsweise Verschwenken des Handknebels (44) in die Verriegelungs-AUS-Stellung eine Betätigungskraft erfordert, die größer oder gleich einem festgelegten Grenzwert ist, ab dem eine Zerstörung des Schaltmechanismus' eintritt.
  2. Leistungsschalter nach Anspruch 1, dadurch gekennzeichnet, daß der genannte festgelegte Grenzwert der Bruchfestigkeit wesentlicher Teile des Schaltmechanismus' entspricht.
  3. Leistungsschalter nach Anspruch 2, dadurch gekennzeichnet, daß die genannte Bruchfestigkeit per Norm definiert ist.
  4. Leistungsschalter nach Anspruch 1, dadurch gekennzeichnet, daß die genannte Öffnung (47) im Gehäuse um ein bestimmtes Winkelmaß versetzt zu der Zwischenstellung angeordnet ist, die die Ausnehmung (45) des Handknebels (44) bei verschweißten Kontakten nach Beaufschlagung mit einer Kraft entsprechend dem genannten festgelegten Grenzwert einnimmt.
  5. Leistungsschalter nach Anspruch 4, dadurch gekennzeichnet, daß die genannten Versatzwinkel des Anschlags (46) und der Öffnung (47) annähernd gleich sind.
  6. Leistungsschalter nach Anspruch 1, dadurch gekennzeichnet, daß der Schaltmechanismus ein in der Nähe des Anschlags (46) angeordnetes Federelement (50) umfaßt, das dazu dient, eine Gegenkraft auf den Handknebel (44) auszuüben, wenn dieser in die Verriegelungs-AUS-Stellung verschoben wird.
EP96410025A 1995-04-13 1996-03-19 Elektrisches Gerät, insbesondere Leistungsschalter, ausgerüstet mit einer Sicherheitsvorrichtung Expired - Lifetime EP0737991B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9504679A FR2733087B1 (fr) 1995-04-13 1995-04-13 Appareil electrique et notamment disjoncteur equipe d'un dispositif de securite
FR9504679 1995-04-13

Publications (2)

Publication Number Publication Date
EP0737991A1 EP0737991A1 (de) 1996-10-16
EP0737991B1 true EP0737991B1 (de) 2002-06-12

Family

ID=9478253

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96410025A Expired - Lifetime EP0737991B1 (de) 1995-04-13 1996-03-19 Elektrisches Gerät, insbesondere Leistungsschalter, ausgerüstet mit einer Sicherheitsvorrichtung

Country Status (7)

Country Link
EP (1) EP0737991B1 (de)
CN (1) CN1056705C (de)
AT (1) ATE219282T1 (de)
DE (1) DE69621695T2 (de)
ES (1) ES2176422T3 (de)
FR (1) FR2733087B1 (de)
HU (1) HU218957B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2388790A1 (de) 2010-05-19 2011-11-23 Eaton Industries GmbH Leistungsschalter mit Abschliessvorrichtung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69915845T2 (de) * 1999-12-21 2005-03-24 Hager Electro S.A. Sicherheitsvorrichtung für elektrisches Gerät
ATE355604T1 (de) * 2000-04-07 2006-03-15 Hager Electro Sicherheitseinrichtung für elektrisches gerät vom schutzschalter typ
KR102007779B1 (ko) * 2018-02-06 2019-08-07 엘에스산전 주식회사 접지스위치를 갖는 개폐장치

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2649826B1 (fr) * 1989-07-11 1995-11-24 Merlin Gerin Mecanisme de commande pour disjoncteur electrique
IT1239465B (it) * 1990-04-04 1993-11-02 Cge Comp Gen Elettromecc Mezzi di consenso per il lucchettaggio di dispositivi di comando manuale di apparecchi elettromeccanici

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2388790A1 (de) 2010-05-19 2011-11-23 Eaton Industries GmbH Leistungsschalter mit Abschliessvorrichtung
DE102010020987A1 (de) 2010-05-19 2011-11-24 Eaton Industries Gmbh Leistungsschalter mit Abschließvorrichtung
DE102010020987B4 (de) * 2010-05-19 2012-04-05 Eaton Industries Gmbh Leistungsschalter mit Abschließvorrichtung

Also Published As

Publication number Publication date
HU218957B (hu) 2001-01-29
DE69621695D1 (de) 2002-07-18
ATE219282T1 (de) 2002-06-15
HU9600942D0 (en) 1996-06-28
HUP9600942A2 (en) 1997-05-28
FR2733087B1 (fr) 1997-06-06
CN1139287A (zh) 1997-01-01
EP0737991A1 (de) 1996-10-16
HUP9600942A3 (en) 1999-04-28
DE69621695T2 (de) 2002-12-05
ES2176422T3 (es) 2002-12-01
FR2733087A1 (fr) 1996-10-18
CN1056705C (zh) 2000-09-20

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