EP0798756A1 - Betätigungsmechanismus für elektrischen Schutzschalter mit grossen Öffnungswinkel - Google Patents

Betätigungsmechanismus für elektrischen Schutzschalter mit grossen Öffnungswinkel Download PDF

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Publication number
EP0798756A1
EP0798756A1 EP97410035A EP97410035A EP0798756A1 EP 0798756 A1 EP0798756 A1 EP 0798756A1 EP 97410035 A EP97410035 A EP 97410035A EP 97410035 A EP97410035 A EP 97410035A EP 0798756 A1 EP0798756 A1 EP 0798756A1
Authority
EP
European Patent Office
Prior art keywords
plate
pivot
contact arm
opening
arm
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.)
Granted
Application number
EP97410035A
Other languages
English (en)
French (fr)
Other versions
EP0798756B1 (de
Inventor
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 SE
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 SE filed Critical Schneider Electric SE
Publication of EP0798756A1 publication Critical patent/EP0798756A1/de
Application granted granted Critical
Publication of EP0798756B1 publication Critical patent/EP0798756B1/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
    • H01H71/52—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
    • 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
    • H01H71/503—Means for increasing the opening stroke of the contacts

Definitions

  • FIG. 1 A mechanism of a circuit breaker of the prior art is illustrated in Figures 1 to 3.
  • the mechanism comprises a lever for supporting the movable contact arm which is articulated on the pivot of the rotary drive plate.
  • the trigger lever is also articulated on the plate, but on an axis offset from the pivot.
  • the connecting rod between the lever and the hook for hooking the plate is not shown for reasons of clarity.
  • the lever and the trigger lever respectively comprise a first transmission means and a second transmission means capable of transmitting position and energy information to the auxiliary modules.
  • the auxiliary modules A can be tripping or signaling modules, which are adaptable to a large lateral face of the circuit breaker housing.
  • FIG. 1 A mechanism of a circuit breaker of the prior art is illustrated in Figures 1 to 3.
  • the first means of transmission of the circuit breaker handle is mechanically connected to the lever of the auxiliary module A by a first control link.
  • the second transmission means is mechanically connected to the auxiliary by a second control link.
  • the first control link is used to transmit a closed or open status signal from the circuit breaker to the auxiliary when the latter consists of a signaling module.
  • the second bidirectional control link serves in one direction to transmit a signal indicating the tripping of the circuit breaker to the auxiliary when the latter is constituted by a fault signaling module, or to transmit in the opposite direction a triggering control signal from the auxiliary module, for example a differential protection block, to the circuit breaker.
  • the object of the invention is to provide a circuit breaker mechanism having improved dielectric strength without modifying the kinematics of the transmission means for adapting the auxiliary modules, and independently of the manual or automatic operating mode.
  • the mechanism according to the invention is characterized in that the pivot axis of the contact arm is integral with the housing and passes through an opening of the plate with a predetermined offset with respect to the pivot, and that the plate has a stop drive respectively separated from the axis of the contact arm by a first spoke, and from the pivot by a second spoke, the difference in length of the spokes allowing an amplified opening angle of the contact arm, which is greater than the stroke angle of the plate.
  • the differential displacement between the contact arm and the plate due to the off-center of the pivot axis of the arm allows to increase the isolation distance without modifying the angular travel of the plate which remains suitable for the fitting of auxiliaries standards.
  • the opening for passage of the axis through the plate has an oblong shape, so as to exert a leverage on the contact arm in the direction of the separation of the contacts.
  • the mechanism 40 is provided with a movable contact arm 12 with a large opening angle ⁇ obtained by off-centering the axis 42 of the contact arm 12 relative to the pivot 14 of the drive plate 16.
  • the double plate 16 is constituted by a pair of elements 16a, 16b each having a pivot 14 engaged in a bearing 44a, 44b of the insulating housing 46.
  • the trigger lever 18 is pivotally mounted on an axis 48 of the plate 16, and cooperates with a triggering member 50 controlled by a pallet 52 of the electromagnetic trigger 54.
  • the second transmission means 24 is arranged on the trigger lever 18, which is intended, when a fault occurs, to interrupt the mechanical connection between the plate 16 and the link 56 coupled to the lever 20.
  • This connection mechanical is effected by means of a hook 58 articulated on an axis 60 of the plate 16.
  • the pivot axis 42 of the movable contact arm 12 passes through an oblong opening 62 of the plate 16, and bears in bearings formed in the opposite faces of the housing 46.
  • the opening 62 of each element 16a, 16b of the plate 16 is offset with respect to the pivot 14, and to the axis 48 of articulation, the pivot 14 being located between the pivot axis 42 of the contact arm 12, and the movable contact 36.
  • a first spring 64 for actuating the plate 16 towards the open position comprises a torsion spring surrounding the pivot 14.
  • One of the end strands of the spring 64 bears on the plate 16, and the strand d the opposite end is in engagement with a fixed abutment of the housing 46.
  • a second spring 66 for the contact pressure is arranged on a projection 68 of the support lever 11 surrounding the pivot axis 42. This spring 66 allows movement relative pivot between the plate 16 and the support lever 11, and urges the latter towards the closed position to ensure a predetermined contact pressure with the fixed contact 34.
  • the plate 16 is equipped with a drive stop 70 intended to come into engagement against a bearing surface 72 of the support lever 11 to move it towards the open position.
  • the radius R1 formed between the axis 42 of the contact arm 12 and the drive stop 70 is less than the radius R2 between the pivot 14 of the plate 16 and the same stop 70.
  • the separation of the contacts 34, 36 takes place following a displacement of the plate 16 towards the open position, which can intervene manually by the intervention of the lever 20, or automatically, following the triggering after the detection of a default.
  • the drive stop 70 approaches the support surface 72 of the support lever 11, and drives the latter counterclockwise to the open position of the contacts 34, 36 (figure 7).
  • the difference in length of the radii R1 and R2 conditions an amplified opening angle ⁇ of the contact arm 12, while the plate 16 performs a standard pivoting movement whose stroke ⁇ corresponds to that of FIG. 3.
  • the effect of amplification of the opening movement of the contact arm 12 makes it possible to obtain a greater isolation distance, while the angle of rotation ⁇ of the plate 16 remains adapted to the kinematics of the transmission means 22, 24 at the level handle 26 and release lever 18.
  • the housing of the axis 42 in the oblong opening 62 of the plate 16 causes a lever effect exerted on the movable contact arm 12, capable of causing the contacts 34, 36 to tear off from a state of welding of the latter at point S.
  • the pivot axis 42 is normally biased by the spring 66 towards the end right of the oblong opening 62. From a state of welding of the contacts 34, 36, the movement of the lever 20 towards the open position causes a slight lifting movement of the contact arm 12, and the movement to the left of the axis 42 in the opening 62, from the initial position 0 to a first position 1.
  • the inclination of the opening 62 makes it possible to obtain, in addition to the leverage, an additional shearing effect at the level of the weld S, following the displacement of the axis 42 of the initial position 0 to a second position 2.
  • This shearing effect also causes the movable contact 36 to slip with the fixed contact 34, allowing the contacts to self-clean.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)
EP97410035A 1996-03-29 1997-03-19 Betätigungsmechanismus für elektrischen Schutzschalter mit grossen Öffnungswinkel Expired - Lifetime EP0798756B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9604276 1996-03-29
FR9604276A FR2746957B1 (fr) 1996-03-29 1996-03-29 Mecanisme de commande d'un disjoncteur a grand angle d'ouverture

Publications (2)

Publication Number Publication Date
EP0798756A1 true EP0798756A1 (de) 1997-10-01
EP0798756B1 EP0798756B1 (de) 2005-05-04

Family

ID=9490935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97410035A Expired - Lifetime EP0798756B1 (de) 1996-03-29 1997-03-19 Betätigungsmechanismus für elektrischen Schutzschalter mit grossen Öffnungswinkel

Country Status (14)

Country Link
EP (1) EP0798756B1 (de)
CN (1) CN1083611C (de)
BR (1) BRPI9701509B8 (de)
CZ (1) CZ287559B6 (de)
DE (1) DE69733168T2 (de)
EA (1) EA000520B1 (de)
ES (1) ES2242210T3 (de)
FR (1) FR2746957B1 (de)
HU (1) HU221673B1 (de)
ID (1) ID16415A (de)
MY (1) MY123088A (de)
PL (1) PL184352B1 (de)
TR (1) TR199700248A3 (de)
ZA (1) ZA972539B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975971A1 (de) * 2007-03-29 2008-10-01 Schneider Electric Industries S.A.S. Bedienungsvorrichtung eines elektrischen Sicherungsgeräts und elektrisches Sicherungsgerät, das sie umfasst
CN118392111A (zh) * 2024-06-27 2024-07-26 国网山东省电力公司日照供电公司 隔离开关合闸角度测量装置

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ299994B6 (cs) * 2003-10-24 2009-01-14 Jovean & Rogy Electrical Holding Co., Ltd Spouštový mechanismus jistice
CN102426999B (zh) * 2011-09-13 2014-11-19 浙江正泰电器股份有限公司 模数化断路器的操作机构
CN103021748B (zh) * 2012-12-28 2015-04-22 常熟开关制造有限公司(原常熟开关厂） 大断口断路器
JP2015002012A (ja) * 2013-06-13 2015-01-05 パナソニックＩｐマネジメント株式会社 接点装置及び回路遮断器
CN104500494B (zh) * 2014-11-26 2016-08-24 东华大学 适用于狭小空间的气缸行程放大机构及其工作方法
US10438754B2 (en) * 2017-11-15 2019-10-08 Carling Technologies, Inc. Low profile circuit breaker with self cleaning contacts
KR102007779B1 (ko) * 2018-02-06 2019-08-07 엘에스산전 주식회사 접지스위치를 갖는 개폐장치
RU186711U1 (ru) * 2018-11-27 2019-01-30 Общество с ограниченной ответственностью "МФК ТЕХЭНЕРГО" Выключатель автоматический

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0295158A1 (de) * 1987-06-09 1988-12-14 Merlin Gerin Steuermechanismus eines elektrischen Kleinschalters
EP0570647A1 (de) * 1992-05-13 1993-11-24 Hager Electro S.A. Schaltschloss für Schutzschalter und Schutzschalter, mit diesem integriert

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0295158A1 (de) * 1987-06-09 1988-12-14 Merlin Gerin Steuermechanismus eines elektrischen Kleinschalters
EP0570647A1 (de) * 1992-05-13 1993-11-24 Hager Electro S.A. Schaltschloss für Schutzschalter und Schutzschalter, mit diesem integriert

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975971A1 (de) * 2007-03-29 2008-10-01 Schneider Electric Industries S.A.S. Bedienungsvorrichtung eines elektrischen Sicherungsgeräts und elektrisches Sicherungsgerät, das sie umfasst
FR2914485A1 (fr) * 2007-03-29 2008-10-03 Schneider Electric Ind Sas Dispositif de commande d'un appareil de protection electrique et appareil de protection electrique la comportant
AU2008201424B2 (en) * 2007-03-29 2011-11-10 Schneider Electric Industries Sas Operating device of an electrical protection apparatus and electrical protection apparatus comprising same
CN101276710B (zh) * 2007-03-29 2012-05-02 施耐德电器工业公司 电气保护设备的操作装置及包括该装置的电气保护设备
CN118392111A (zh) * 2024-06-27 2024-07-26 国网山东省电力公司日照供电公司 隔离开关合闸角度测量装置

Also Published As

Publication number Publication date
CZ287559B6 (en) 2000-12-13
EP0798756B1 (de) 2005-05-04
HU9700618D0 (en) 1997-05-28
HU221673B1 (hu) 2002-12-28
CN1164116A (zh) 1997-11-05
BRPI9701509B8 (pt) 2016-07-05
HUP9700618A3 (en) 1999-11-29
FR2746957A1 (fr) 1997-10-03
EA199700029A1 (ru) 1997-09-30
PL319151A1 (en) 1997-10-13
DE69733168T2 (de) 2006-01-12
ID16415A (id) 1997-09-25
ZA972539B (en) 1997-09-29
CN1083611C (zh) 2002-04-24
BR9701509B1 (pt) 2009-05-05
EA000520B1 (ru) 1999-10-28
MY123088A (en) 2006-05-31
TR199700248A2 (xx) 1999-09-21
FR2746957B1 (fr) 1998-06-19
PL184352B1 (pl) 2002-10-31
ES2242210T3 (es) 2005-11-01
DE69733168D1 (de) 2005-06-09
CZ97097A3 (cs) 1998-12-16
HUP9700618A2 (hu) 1998-01-28
BR9701509A (pt) 1998-06-30
TR199700248A3 (tr) 1999-09-21

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