EP0914666B1 - Kinematic system for actuating the movable contact of automatic electric breakers - Google Patents

Kinematic system for actuating the movable contact of automatic electric breakers Download PDF

Info

Publication number
EP0914666B1
EP0914666B1 EP98924252A EP98924252A EP0914666B1 EP 0914666 B1 EP0914666 B1 EP 0914666B1 EP 98924252 A EP98924252 A EP 98924252A EP 98924252 A EP98924252 A EP 98924252A EP 0914666 B1 EP0914666 B1 EP 0914666B1
Authority
EP
European Patent Office
Prior art keywords
actuation
lever
kinematic system
spring
breaker
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
EP98924252A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0914666A1 (en
Inventor
Domenico Bosatelli
Augusto Contardi
Sergio Pianezzola
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
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 Gewiss SpA filed Critical Gewiss SpA
Publication of EP0914666A1 publication Critical patent/EP0914666A1/en
Application granted granted Critical
Publication of EP0914666B1 publication Critical patent/EP0914666B1/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
    • H01H83/02—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
    • 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
    • H01H2083/045—Auxiliary switch opening testing circuit in synchronism with the main circuit
    • 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
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure

Definitions

  • the present invention relates to a kinematic system for actuating the movable contact of automatic electric breakers.
  • EP-A-0224396 discloses a control mechanism for low tension electric breakers wherein a kinematic system actuates the release of the movable contact.
  • the aim of the present invention is to provide a kinematic system for actuating the movable contact, particularly for automatic electric breakers, which has a simplified construction with respect to the known art.
  • An object of the invention is to provide a kinematic system whose assembly is simplified.
  • Another object is to provide a kinematic system which is more reliable than conventional ones.
  • a kinematic system for actuating the movable contact of automatic electric breakers comprising an actuation mechanism which has an actuation means pivoted to the body of a breaker and connected to a cross-member which is in turn connected to an actuation lever operatively associated with an actuation spring coupled to a first common pivot; said actuation lever being further operatively associated with a reset spring coupled to said first common pivot; said system comprising a mushroom-shaped member of a relay of the breaker acting on a reset lever which is in turn kinematically associated with a hook supported by a second common pivot; an engagement lever, retained by said hook, being adapted to act on the rear part of a traction lever allowing the release of said kinematic system; characterized in that it comprises an indicator connected to said engagement lever and pivoted to said actuation means.
  • a kinematic actuation system particularly for electric breakers, according to the invention, generally designated by the reference numeral 1, includes a case body 3 which is constituted for example by the ordinary case body of a residual current operated breaker 100 which is adapted to be associated with conventional omega-shaped bars.
  • the kinematic system 1 includes an actuation mechanism 5 for the residual current operated breaker, shown in Figs. 3-10, and a test circuit mechanism 7, shown in Figs. 11-16.
  • the actuation mechanism includes an actuation means which is constituted for example by a conventional handle 9 which is pivoted to the body 3 and is connected to an actuation lever 11 by a U-shaped cross-member 13.
  • the actuation lever 11 is connected to the kinematic system of the automatic breaker, shown schematically in Fig. 1.
  • the cross-member 13 is connected to an actuation lever 15 which is operatively associated with a reset spring 17 and with an actuation spring 19 on a common pivot 21.
  • a mushroom-shaped member 23 of the relay acts on a reset lever 25 which is in turn kinematically associated with a hook 27 which is supported by a second common pivot 29 and is provided with a return spring 47.
  • An engagement lever 31, retained by the hook 27, is suitable to act on the rear part of a traction lever 33.
  • the engagement lever 31 is connected to an indicator 35 which is pivoted to the handle 9 and is provided with a return spring 49.
  • the mechanism 7 of the test circuit is shown in greater detail in Figs. 11-16 and includes a test button 37 which is suitable to act on a test strip 39 which acts on a contact spring 41.
  • the fixed contact 43 is connected to the pivot 21 by means of the actuation spring 19 and to a resistor 45 by means of the contact spring 41.
  • the resistor 45 is in turn connected to the terminal.
  • the cross-member 13 By turning the handle 9, the cross-member 13 is moved and turns the actuation lever 11, which acts on the kinematic system of the automatic breaker.
  • the cross-member 13 is also rigidly coupled to the actuation lever 15, which in the closing action turns and loads the reset spring 17 and the actuation spring 19.
  • the mushroom-shaped part of the relay pushes the reset lever 25, which by moving down shifts the hook 27.
  • the engagement lever 31 is released and turns; by striking the rear part of the traction lever 33, the engagement lever 31 allows the release of the kinematic system of the automatic breaker.
  • the engagement lever 31 also disengages the indicator 35, which in the closed position was rigidly coupled to its rear part. Resetting occurs immediately after tripping: when the handle 9 returns, the actuation spring 19 turns the actuation lever 15 in the opposite direction with respect to the closure rotation.
  • the actuation lever repositions the engagement lever 31 by virtue of their physical coupling, returning its lower end into the seat of the hook 27, while the reset spring 17 repositions the reset lever 25, resetting the relay with a force which is linked to the return speed of the handle 9 and is therefore calibrated. It is noted that during resetting the indicator 35 is still active and is deactivated only after the first closure.
  • test circuit entails the simulation of a residual current in order to check the operation of the relay and of the breaker.
  • the test button 37 When the test button 37 is raised, the circuit is open and the contact spring 41 in fact does not touch the pivot 21. By actuating the test button in the direction indicated by the arrows in the figures, the contact spring 41 is lowered, closing the circuit. It should be noted that when the differential kinematic system has tripped, the test circuit must not be usable, otherwise the resistor 45 would burn out.
  • Disabling of the test circuit is achieved in two ways: either by lifting the contact spring 41 by means of the engagement lever 31, which by rotating lifts the lower part of the contact spring 41, or by virtue of the insulation of the pivot 21 obtained by the rotation of the seat of the pivot in the actuation lever 15, when the knob 9 is in the open position.
  • kinematic actuation system of the movable contact particularly for automatic electric breakers, according to the invention, is susceptible of numerous modifications and variations, all of which are within the scope of the inventive concept as defined in the appended claims.
  • 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)
  • Electronic Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Keying Circuit Devices (AREA)
  • Push-Button Switches (AREA)
EP98924252A 1997-05-20 1998-04-30 Kinematic system for actuating the movable contact of automatic electric breakers Expired - Lifetime EP0914666B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITMI971171 1997-05-20
IT97MI001171A IT1292339B1 (it) 1997-05-20 1997-05-20 Cinematismo di azionamento del contatto mobile particolarmente per interruttori elettrici automatici
PCT/EP1998/002557 WO1998053473A1 (en) 1997-05-20 1998-04-30 Kinematic system for actuating the movable contact of automatic electric breakers

Publications (2)

Publication Number Publication Date
EP0914666A1 EP0914666A1 (en) 1999-05-12
EP0914666B1 true EP0914666B1 (en) 2005-06-22

Family

ID=11377167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98924252A Expired - Lifetime EP0914666B1 (en) 1997-05-20 1998-04-30 Kinematic system for actuating the movable contact of automatic electric breakers

Country Status (7)

Country Link
EP (1) EP0914666B1 (es)
AT (1) ATE298459T1 (es)
AU (1) AU7651398A (es)
DE (1) DE69830637T2 (es)
ES (1) ES2241140T3 (es)
IT (1) IT1292339B1 (es)
WO (1) WO1998053473A1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2157161B1 (es) * 1999-07-15 2002-02-16 Power Controls Iberica Sl Mecanismo de disparo para interruptores automaticos.
EP1995754B1 (de) * 2007-05-23 2013-09-04 Abb Ag Elektrisches Installationsschaltgerät
DE102011003801A1 (de) * 2011-02-08 2012-08-09 Siemens Aktiengesellschaft Fehlerstromschutzschalter
FR3016078A1 (fr) 2013-12-27 2015-07-03 Legrand France Appareil electrique au format modulaire

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2589627B1 (fr) * 1985-10-31 1988-08-26 Merlin Gerin Mecanisme de commande pour disjoncteur electrique a basse tension
FR2626105B1 (fr) * 1988-01-20 1990-06-15 Hager Electro Appareil de protection d'installations electriques
EP0338930A1 (fr) * 1988-04-22 1989-10-25 Hager Electro S.A. Disjoncteurs ou disjoncteurs differentiels
FR2674679B1 (fr) * 1991-03-29 1994-06-17 Hager Electro Mecanisme de serrure pour disjoncteur.
FR2689309B1 (fr) * 1992-03-31 1994-05-20 Merlin Gerin Mecanisme de commande a tiroir pour disjoncteur electrique a phase et neutre.
EP0570647B1 (fr) * 1992-05-13 1994-03-02 Hager Electro S.A. Mécanisme de serrure pour disjoncteur et disjoncteurs l'incorporant

Also Published As

Publication number Publication date
ITMI971171A1 (it) 1998-11-20
EP0914666A1 (en) 1999-05-12
ATE298459T1 (de) 2005-07-15
ITMI971171A0 (es) 1997-05-20
WO1998053473A1 (en) 1998-11-26
IT1292339B1 (it) 1999-01-29
DE69830637T2 (de) 2006-05-11
ES2241140T3 (es) 2005-10-16
AU7651398A (en) 1998-12-11
DE69830637D1 (de) 2005-07-28

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