EP1975971B1 - Dispositif de commande d'un appareil de protection électrique et appareil de protection électrique le comportant - Google Patents

Dispositif de commande d'un appareil de protection électrique et appareil de protection électrique le comportant Download PDF

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Publication number
EP1975971B1
EP1975971B1 EP20080354012 EP08354012A EP1975971B1 EP 1975971 B1 EP1975971 B1 EP 1975971B1 EP 20080354012 EP20080354012 EP 20080354012 EP 08354012 A EP08354012 A EP 08354012A EP 1975971 B1 EP1975971 B1 EP 1975971B1
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EP
European Patent Office
Prior art keywords
latch
mounting plate
lever
contacts
hook
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
EP20080354012
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German (de)
English (en)
French (fr)
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EP1975971A1 (fr
Inventor
Yves Belin
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
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Schneider Electric Industries SAS
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Publication date
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Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP1975971A1 publication Critical patent/EP1975971A1/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
    • H01H71/50—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 patent is also known FR 2,616,583 describing a control mechanism of a miniature electric circuit breaker having the features mentioned above.
  • the assembly comprising the transmission link, the hook, and the trip lever is a reduction stage allowing a reduction of the triggering force.
  • the force of the rod exerts a torque on the hook hook.
  • This geometry does not allow to be optimized in order to further reduce the gripping force for reasons of size of the mechanism in relation to the standard size of the modular circuit breaker poles. As a result, the size of the magnetic and thermal protections can not be further reduced.
  • the present invention solves these problems and provides a device for controlling an electrical apparatus to improve the performance of this apparatus.
  • the present invention relates to a control device of an electrical protection apparatus of the kind mentioned above.
  • This device is characterized in that the transmission rod, in locking position of the hooking, bears on the plate and on the locking hook, the relative positions of the two bearing surfaces respectively of the plate and the hook and that the ratio of the two lever arms for the reduction of the force of the rod on the release lever being chosen so that the force applied to the hook is lower than that applied to the plate.
  • the relative positions of the two bearing surfaces as well as the ratio of the two lever arms are chosen so that the force applied to the hook is about seven times lower than that applied to the plate.
  • the hook and the trigger lever are made in a reduced thickness so as to allow the housing of an anti-pollution screen interposed between the link and the hooking zone between the hook and the trip lever .
  • the hook is made of a cut sheet or plastic.
  • the hook and the plate each comprise an opening intended to allow the rotation of the plate during an automatic release while the rod is locked in the closed position of the contacts by the joystick.
  • the plate also comprises an opening adapted to guide the stroke of the rod to its initial position in support on the plate, when the handle returns to the open position of the contacts after an automatic release.
  • this device comprises a spring with two branches fixed on the lever, comprising a first branch adapted to bring the release lever back to its initial position ready for engagement after a release and a second branch capable of bringing back the hook in a preferred position, in which is created a sufficient clearance between the hook and the lever so as to facilitate hooking of the hook on said bar, after an automatic trigger.
  • the subject of the invention is also an electrical protection apparatus comprising a control device comprising the aforementioned features taken alone or in combination.
  • a miniature electric circuit breaker molded insulating casing 1 comprising a control device 2 according to the invention.
  • This device comprises a support device 3 of the movable contact 4, said mobile contact 4 cooperating with a fixed contact 5.
  • An opening 7 is provided in the front face 8 of the housing for the passage of a lever 6 mounted pivotally limited on an axis 11 of the housing between a closed position in which the contacts 4,5 are closed, and a position of opening corresponding to the separation of contacts 4,5.
  • the lever 6 is equipped with an internal base 9 coupled to a transmission rod 10 to form a toggle device whose articulation 12 is eccentric with respect to the fixed axis 11 of the lever 6.
  • the lever 6 is biased in the trigonometric direction towards the position of opening of the contacts by a return spring (not shown).
  • the fixed contact 5 is secured to the casing of the electromagnetic release 13.
  • the movable contact 4 is fixed to the support device 3 of the movable contact 4, said support 3 being articulated on a pivot 14, the rotating plate 15 being rotatably mounted around a pivot 31.
  • a triggering lever 16 controlled by the striker of the electromagnetic release and the bimetal of the thermal release (not shown) or an external auxiliary, is pivotally mounted on an axis 17 carried by the plate 15 with a predetermined offset relative to the pivot aforementioned 14.
  • a breakable mechanical connection is provided between the transmission link 10 and the drive plate of the contact support device 3 4. In the locked position, the connection allows the manual control of the mechanism by the lever 6.
  • the displacement of the trigger lever 16 to the triggered position under the action of the triggers, causes the momentary rupture of the mechanical link, causing the automatic trigger mechanism , independently of the lever 6.
  • the release lever 16 is associated with a return spring 27 for ensuring the automatic restoration of the mechanical link when the lever 6 is actuated to the open position, following a triggering of the mechanism on default.
  • the breakable mechanical link comprises a hook 19 pivotally mounted on an axis 20 of the plate 15.
  • the spout 21 ( fig.4 ) of the hook 19 cooperates in the locked position of the connection with a retaining catch 22 ( fig.4 )
  • the transmission link 10 is coupled to the hook 19 and the plate 15 at a hinge point 23 that can move when triggered in two consecutive openings 24 and 26 of the plate. 15.
  • This articulation point 23 is located between the hinge axis 20 ( fig.3 ) of the hook 19 on the plate and the spout 21 ( fig.4 ) of the hook hook.
  • the link is a reduction stage in the kinematic chain of the mechanism, allowing a reduction of the triggering force from the magneto-thermal trigger.
  • the hook 19 also has a bean-shaped opening or V 25 which, with the openings 24 and 26 of the plate, are intended to allow the rotation of the contact holder plate 15, during a trip, while the link 10 is blocked by the handle 6, itself held in the closed position of the contacts.
  • the opening 26 provided in the plate 15 also guides the stroke of the link when the handle returns to the open position of the contacts after a trip.
  • the two openings 24,26 of the plate 15 extend relative to each other so as to form a V.
  • a bias spring 27 with two branches 28,29 is installed around the axis 17 on the lever 16. One of the branches 28 is intended to return the release lever 16 to its initial position while the other branch 29 polarizes the hook 19 in a preferential position chosen so as to create between the lever 16 and the hook 19 a clearance sufficient to allow the hooking.
  • Screen 30 ( figs.3 , 6 and 7 ) integrated in the release lever covers the hooking zone of the release lever 16 with the hook 19. This screen is interposed between the rod and the attachment zone of the hook. It makes it possible to protect the fastening area from projections due to the cut.
  • the control device is in a position of the open contacts, the lever being in the open position.
  • the lever 6 When the lever 6 is actuated to close the contacts ( fig.2 ), this moves the rod 10 which bears on the plate 15 and on the hook 19 ( fig.2 ).
  • the hook 19 is locked on the bar (or lever) trigger.
  • the rod 10 bears on the plate 15 and the hook 19, pivots the plate about its axis 31 until the contacts 4,5 close.
  • the rod continues its race until crossing the dead point of the knee formed by the lever and the link. Then, the mechanism takes the equilibrium position that keeps the contacts closed as shown on the figure 3 and 4 .
  • the handle 6 is actuated until it crosses the dead center of the toggle in the opposite direction.
  • the mechanism then reaches the equilibrium position, the contacts being open, when the handle reaches the end of its stroke, position represented on the figure 1 .
  • the hook 19 is unlocked, but the handle 6 does not return immediately to its open position.
  • the balance of forces exerted by the rod 10 on the mechanism is broken.
  • the plate 15 rotates about its axis 31 and opens the contacts, the position shown on the figures 5 and 6 .
  • the opening 25 provided inside the hook 19, allows the rotation of the hook about the axis 20 and this opening 25 of the hook and the openings 24,26 of the plate 15, allow the rotation of the plate, the joystick is still maintained in the closed contacts position. Then, the spring of the joystick brings the latter back to the open contacts position and the rod returns the hook to the initial position as shown in FIG. figure 7 .
  • the biasing spring 27 of the hook and resetting of the bar puts them in a position allowing the locking of the hook on the bar when the lever is actuated to close the contacts.
  • the openings 24,26 provided in the plate 15 participate in the guide of the rod 10 so as to bring it back into position on the platen.
  • the link in the normal operating position of the electrical circuit without any fault in the circuit, the link is supported on the contact carrier plate and on the locking hook, the relative positions of the two bearing surfaces as well as the ratio of lever arms X and Y being optimized so that the force that locks the hook is reduced to a minimum.
  • the system comprises two stages of reduction. According to the first, the force of the mechanism is taken up largely on the plate and in a smaller part on the hook. According to the second, by a set of lever arms on the hook, the force is multiplied on the trigger lever. Thus, the force required for unlocking can be reduced to a value lower than the solutions of the prior art.
  • the invention By virtue of the invention, a reduction in the size of the products is obtained while maintaining or increasing the performance of the device, given that the size of the magnetic and thermal protections can be reduced.
  • the heat released by the thermal protections is thereby decreased.
  • the operation of the magnetic releases is faster and better since the dynamic stresses are lower.
  • the reduction of the gripping force reduces the bearing surface of the hook on the bar and therefore the thickness of the hook and the trigger bar.
  • the reduction of the gripping force also makes it possible to produce the cut sheet hook because it is possible to make the hook in a thin sheet.
  • the small thickness of the hook and the bar makes it possible to house an anti-pollution screen between, on the one hand, the connecting rod and, on the other hand, the catch zone between the hook and the bar.
  • the bias spring thanks to the presence of the bias spring, the dimension chains for hooking the hook on the bar are simplified. Thus, a single spring is used to perform both functions namely resetting the bar and creating a snap.
  • the invention applies to any electrical apparatus comprising a mechanism of the type mentioned above, such as a circuit breaker, a switch, a differential switch, a disconnector, auxiliary contacts including modular products etc .

Landscapes

  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP20080354012 2007-03-29 2008-02-05 Dispositif de commande d'un appareil de protection électrique et appareil de protection électrique le comportant Active EP1975971B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0702009A FR2914485B1 (fr) 2007-03-29 2007-03-29 Dispositif de commande d'un appareil de protection electrique et appareil de protection electrique la comportant

Publications (2)

Publication Number Publication Date
EP1975971A1 EP1975971A1 (fr) 2008-10-01
EP1975971B1 true EP1975971B1 (fr) 2012-08-29

Family

ID=38328330

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080354012 Active EP1975971B1 (fr) 2007-03-29 2008-02-05 Dispositif de commande d'un appareil de protection électrique et appareil de protection électrique le comportant

Country Status (9)

Country Link
EP (1) EP1975971B1 (pt)
CN (1) CN101276710B (pt)
AR (1) AR067292A1 (pt)
AU (1) AU2008201424B2 (pt)
BR (1) BRPI0800942A2 (pt)
EA (1) EA014194B1 (pt)
ES (1) ES2390081T3 (pt)
FR (1) FR2914485B1 (pt)
MA (1) MA29834B1 (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2800140C1 (ru) * 2021-02-09 2023-07-19 Шнейдер Электрик Эндюстри Сас Быстрозамыкающаяся конструкция, подходящая для прерывателя цепи постоянного тока, и прерыватель цепи постоянного тока

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2940513B1 (fr) * 2008-12-19 2010-12-24 Schneider Electric Ind Sas Mecanisme d'entrainement de la manette d'un bloc de commande a distance, et bloc le comprenant
CN102318028B (zh) * 2008-12-19 2014-08-20 施耐德电器工业公司 远程控制单元的手柄驱动机构及包括其的单元
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
CN102881531B (zh) * 2012-09-13 2015-02-25 浙江天正电气股份有限公司 一种易于装配的小型断路器及其操作机构
FR2996678B1 (fr) 2012-10-05 2014-10-31 Schneider Electric Ind Sas Dispositif de commande d'un appareil de protection electrique et appareil de protection electrique le comportant
FR3023969B1 (fr) 2014-07-17 2017-12-22 Schneider Electric Ind Sas Dispositif de signalisation d'un defaut electrique dans un appareil de protection electrique, et appareil comportant un tel dispositif
CN104319203B (zh) * 2014-11-13 2017-08-25 杭州泰姆电气有限公司 断路器操作机构
FR3036000B1 (fr) 2015-05-07 2017-04-21 Schneider Electric Ind Sas Dispositif de commande d'un appareil de protection electrique et appareil de protection electrique le comportant
FR3051593B1 (fr) 2016-05-23 2019-10-04 Schneider Electric Industries Sas Dispositif de signalisation d'un defaut electrique dans un appareil de protection electrique, et appareil de protection electrique comportant un tel dispositif.
US10604188B2 (en) * 2017-04-11 2020-03-31 Honda Motor Co., Ltd. Protection structure of high voltage electrical equipment unit
FR3087044B1 (fr) * 2018-10-03 2021-01-01 Schneider Electric Ind Sas Module de verrouillage d'un systeme d'armement pour appareil electrique interrupteur
CN109839263B (zh) * 2019-02-26 2020-06-09 北京航空航天大学 一种基于振动信息的gis特征提取及机械缺陷诊断方法
CN214254320U (zh) * 2021-02-09 2021-09-21 施耐德电器工业公司 适用于直流断路器的快速闭合结构和直流断路器

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
SU1001220A1 (ru) * 1980-04-11 1983-02-28 Всесоюзный научно-исследовательский проектно-конструкторский и технологический институт низковольтного аппаратостроения Автоматический выключатель
FR2589627B1 (fr) 1985-10-31 1988-08-26 Merlin Gerin Mecanisme de commande pour disjoncteur electrique a basse tension
FR2616583B1 (fr) * 1987-06-09 1995-01-06 Merlin Gerin Mecanisme de commande d'un disjoncteur electrique miniature
FR2649826B1 (fr) * 1989-07-11 1995-11-24 Merlin Gerin Mecanisme de commande pour disjoncteur electrique
FR2746957B1 (fr) * 1996-03-29 1998-06-19 Schneider Electric Sa Mecanisme de commande d'un disjoncteur a grand angle d'ouverture
RU2107967C1 (ru) * 1996-10-10 1998-03-27 Акционерное общество закрытого типа "Контактор" Выключатель автоматический
WO2001037304A1 (en) * 1999-11-16 2001-05-25 Federal Elektrik Yatirim Ve Ticaret A.Ş. Miniature circuit breaker (automatic fuse) with pressed box

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2800140C1 (ru) * 2021-02-09 2023-07-19 Шнейдер Электрик Эндюстри Сас Быстрозамыкающаяся конструкция, подходящая для прерывателя цепи постоянного тока, и прерыватель цепи постоянного тока

Also Published As

Publication number Publication date
FR2914485B1 (fr) 2009-04-24
AU2008201424B2 (en) 2011-11-10
ES2390081T3 (es) 2012-11-06
EP1975971A1 (fr) 2008-10-01
AU2008201424A1 (en) 2008-10-16
FR2914485A1 (fr) 2008-10-03
EA200800721A1 (ru) 2008-10-30
AR067292A1 (es) 2009-10-07
CN101276710B (zh) 2012-05-02
EA014194B1 (ru) 2010-10-29
BRPI0800942A2 (pt) 2008-11-11
MA29834B1 (fr) 2008-10-03
CN101276710A (zh) 2008-10-01

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