EP2263247B1 - Schaltgerät - Google Patents

Schaltgerät Download PDF

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Publication number
EP2263247B1
EP2263247B1 EP09717752A EP09717752A EP2263247B1 EP 2263247 B1 EP2263247 B1 EP 2263247B1 EP 09717752 A EP09717752 A EP 09717752A EP 09717752 A EP09717752 A EP 09717752A EP 2263247 B1 EP2263247 B1 EP 2263247B1
Authority
EP
European Patent Office
Prior art keywords
switchgear
triggering
switching
spring
lever
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
EP09717752A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2263247A1 (de
Inventor
Adolf Tetik
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.)
Eaton GmbH
Original Assignee
Moeller Gebaudeautomation GmbH
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 Moeller Gebaudeautomation GmbH filed Critical Moeller Gebaudeautomation GmbH
Priority to PL09717752T priority Critical patent/PL2263247T3/pl
Publication of EP2263247A1 publication Critical patent/EP2263247A1/de
Application granted granted Critical
Publication of EP2263247B1 publication Critical patent/EP2263247B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/40Combined electrothermal and electromagnetic mechanisms
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/14Electrothermal mechanisms
    • H01H71/16Electrothermal mechanisms with bimetal element
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/24Electromagnetic mechanisms
    • H01H71/2472Electromagnetic mechanisms with rotatable armatures

Definitions

  • the invention relates to a switching device according to the preamble of claim 1.
  • Switching devices are known which, in the event of excessive currents in a line network, which continue over a predefinable time, separate this line network from a supply network in order to prevent the further supply of electrical current.
  • Switching devices are further known which, in the event of a short circuit in a line network, separate this line network from a supply network in order to prevent the further supply of electrical current.
  • Such switching devices therefore have a so-called.
  • Overcurrent tripping device or a short-circuit tripping device which trigger a mechanical disconnecting device in response, which separates the switching contacts of the switching device, and prevents further current flow.
  • the overcurrent release device or the short-circuit release device usually act mechanically on a mechanical release of the separation device.
  • the overcurrent tripping device or the short-circuit tripping device does not act directly on the disconnecting device, and therefore does not initiate it by a direct or transmission element-free mechanical actuation, since the overcurrent tripping device or the short-circuit tripping device is often arranged as an assembly away from the disconnecting device in the switching device are.
  • Such trained switching devices therefore have a mechanical link between the overcurrent tripping device and the short-circuit tripping device and the separation device.
  • a disadvantage of this is that the mechanical effect which is exerted by the overcurrent tripping device or the short-circuit tripping device on the separating device, can lead to damage of the overcurrent tripping device, the short-circuit tripping device, the connecting link and / or the separating device.
  • Such damage to the switching device means that it will not trigger at the next occasion in which the switching device should be triggered. Since such damage in many cases are not visible from the outside, such damaged switching devices are not replaced, and thus represent a serious threat to people and equipment.
  • the US 4 503 408 A describes a circuit breaker with a bimetallic actuator, which actuates a switching mechanism via a tripping shaft.
  • the release shaft has a first lever arm, for actuation by the bimetallic element, and a second lever arm for Actuation by an electromagnetic short-circuit release.
  • a locking means is arranged for locking a Austsammlungteils a switching mechanism.
  • the second lever arm further comprises leaf springs, each carrying a magnetic sheet, which are provided for attraction by the short-circuit release.
  • the DE 10 2006 005697 A1 discloses a device for triggering a scbutzschalter with an overcurrent release and a short-circuit release, both of which control a switch lock via a rigid trip shaft.
  • the object of the invention is therefore to provide a switching device of the type mentioned, with which the mentioned disadvantages can be avoided, in which the Functionality of such switching devices can be better ensured, and in which damage to the switching device can be avoided in Berieb.
  • the Fig. 1 shows switching device 1, preferably power switch, with at least one input terminal 2 and at least one output terminal 3 for connecting electrical conductors, and with a first switching contact 4 and a second switching contact, wherein the switching contacts 4 in a closed position, a current path between the input terminal 2 and the output terminal 3, wherein a separating device 5 is provided for separating the first switching contact 4 and the second switching contact, and wherein an overcurrent tripping device 6 and / or a short-circuit tripping device 7 are provided, which are for triggering the separating device 5 with this by means of a reversing lever 8 in mechanical operative connection , wherein the lever 8 at least a first lever arm (9) and a second lever arm 10, wherein the first lever arm 9 has a Anêtfortsatz 11 for driving by the overcurrent tripping device 6 and / or the KurzInstitutauslierevorides 7, and wherein the second lever arm 10 an actuating extension 12 for triggering the separating device.
  • 5 includes, wherein the actuating extension
  • Fig. 1 shows a series of modules of a preferred embodiment of a switching device 1 according to the invention in axonometric exploded view. Shown is an embodiment of a switching device 1 with three switching paths or current paths, wherein any predeterminable number of switching paths or switchable current paths can be provided. Switching devices 1 according to the invention are preferably provided with one, two, three or four current paths. According to the number of current paths respectively the same number of input terminals 2 and output terminals 3 are provided. In the figures, only housing-fixed parts of the input terminals 2 and output terminals 3 are shown.
  • the respective input terminals 2 and output terminals 3 generally comprise in addition to the illustrated parts, in each case at least one clamping screw, and preferably in each case at least one movable jaw by means of the clamping screw.
  • the switching device 1 comprises an insulating housing 21, which in the preferred embodiment comprises a lower housing shell 22 and an upper housing shell 23.
  • the at least one first switching contact 4 is in a closed position on the at least one second switching contact, which is not visible in the illustrated embodiment within the assembly of the arc quenching chamber 29.
  • Switching devices 1 have an overcurrent tripping device 6 and / or a short-circuit tripping device 7.
  • Fig. 2 shows a preferred embodiment of a Arrangement of an overcurrent tripping device 6 and a short-circuit tripping device 7.
  • the short-circuit tripping device 7 is formed from a U-shaped yoke 31 and a hinged armature 26, wherein the U-shaped yoke 31 is attached to a first conductor 30 of the current path, which is preferably associated with the input terminal 2 and / or the output terminal 3.
  • the hinged armature 26 is rotatably supported, which by a hinged armature spring 32 in a rest position, as in Fig. 2 is shown, is forced, at which rest position the hinged armature 26 protrudes from the U-shaped yoke 31.
  • the overcurrent tripping device 6 comprises a bimetal element 33, which is attached to the first conductor 30.
  • the bimetallic element 33 is directly traversed by current, so is itself part of the current path, and is directly heated by the stream.
  • the bimetallic element 33 is completely or additionally heated indirectly, for example by a current-carrying conductor is arranged on the bimetallic element 33. With increasing heating of the bimetallic element 33 due to the flow of current, this is bent more and more.
  • a switching device 1 the overcurrent tripping device 6 and / or the short-circuit tripping device 7 does not act directly on the separating device 5, but rather on a reversing lever 8, as in about Fig. 2 is shown.
  • Fig. 2 shows an arrangement of a separator 5, a reversing lever 8, an overcurrent tripping device 6 and a short-circuit tripping device 7.
  • Such a Deflection lever 8 has at least a first lever arm 9 and a second lever arm 10, wherein the first lever arm 9 has a An horrfortsatz 11, which - is provided for driving through the first end 28 of the hinged armature 26 - in the illustrated preferred embodiment.
  • the first end 28 of the hinged armature 26 acts on the control extension 11 of the reversing lever 8.
  • a switching extension 11 is provided for each switching path.
  • the second lever arm 10 comprises an actuating extension 12 for triggering the separating device 5.
  • the separating device 5 is designed as a switching mechanism 17 with a latchable pawl 18.
  • the switching mechanism 17 is a force-storing link between an actuating lever 24 and the switching contacts 4.
  • the switching lock 17 is stretched in the objective training in a first step by moving the operating lever 24 in a first direction, wherein a spring energy storage is tensioned, which upon release of the Switching lock 17 ensures fast and safe separation of the switching contacts 4.
  • the clamping operation is terminated by a latching, latching or latching of the pawl 18 on a housing-fixed part of the switching mechanism 17.
  • the switching contacts are closed by movement of the actuating lever 24 in a second direction.
  • the latching connection of the pawl 24 with the housing-fixed part of the switching mechanism 17 is designed such that a predetermined movement of the pawl 18 in a predetermined direction unlocks the switching mechanism 17, whereby the spring force memory is released and the switching contacts 17 are disconnected.
  • Such preferably used for use switching mechanism 17 is for example in the German Offenlegungsschriften DE 42 27 213 A1 as well as the German patent DE 44 42 417 C1 described.
  • the reversing lever 8 is moved by a movement of the overcurrent tripping device 6 and / or the short-circuit tripping device 7, in particular by a movement of the hinged armature 26, comes - after a predetermined movement of the reversing lever 8 - the actuating extension 12 with the pawl 18 in engagement, and moves the pawl 18 so far that the snap-in connection with the housing-fixed part of the switching mechanism 17 is released, whereby the switching mechanism 17 unlocked, the spring force memory is released and the switching contacts 4 are disconnected.
  • the actuating extension 12 is resilient, each type of resilient compliance can be provided, such as the formation of the actuating extension 12 as a spring, comprising metal or plastic, such as Elastomers.
  • Fig. 2 shows a preferred embodiment of a switching mechanism 17 with an inventively designed lever 8, wherein the switching mechanism 17 is shown in a partially broken view.
  • the pawl 18 is in the latched position, and the actuating lever 24 is in the position of open switch contacts 4.
  • the actuating extension 12 is not in engagement with the pawl 18, so that neither the overcurrent tripping device 6 nor the short-circuit tripping device 7 have detected a tripping situation.
  • the reversing lever 8 is moved or rotated counterclockwise by the overcurrent tripping device 6 or the short-circuit tripping device 7, whereby the resiliently formed actuating extension 12 comes into engagement with the pawl 18, and this, after a predefinable deflection, the switching mechanism 17 triggers.
  • the spring forces of the resiliently formed actuating extension 12 are dimensioned such that upon release or unlatching of the pawl 18 no significant deformations occur on the actuating extension 12. This is not a problem, since the forces for a release or unlatching of the pawl 18 are very low.
  • it may come after triggering or unlatching of the pawl 18 due to the strong deformation of the bimetal 33 of the overcurrent tripping device 6 to a further rotation of the reversing lever 8, resulting in damage to the pawl 18th , the deflection lever 8 and / or the bimetallic element 33 can lead.
  • the resilient, resilient design of the actuating extension 12 in a movement direction of the deflection lever 8 for triggering the separation device 5 can be achieved that in a further rotation of the reversing lever 8 after the release or unlatching of the pawl 18, the pawl 18 is not further rotated or deflected is and is exposed to excessive load, whereby the pawl 18 and the entire switching mechanism 17 are spared from destruction. Due to the resilient design of the actuating extension 12, a further rotation of the reversing lever 8 is possible without damaging the reversing lever 8 would be expected. As a result, the overcurrent tripping device 6, the short-circuit tripping device 7 and the hinged armature 26 can also be protected against damage.
  • the deflection lever 8 is formed as a triggering shaft 19, wherein the triggering shaft 19 has a shaft body 20, which in a housing 21 of the Switching device 1 is rotatably mounted. In the area of the intended mounting of the shaft body 20, this preferably has axial guide webs 27 in order to prevent a displacement of the release shaft 19 in the axial direction.
  • the actuating extension 12 is designed as a spring 13, preferably as a metal spring, wherein each spring material can be provided. It is preferably provided that the actuating attachment 12 is designed as a steel spring.
  • the spring 13 is at least partially formed as a torsion spring 14, whereby a particularly controlled elastic effect in the intended loading direction, can be achieved.
  • the torsion spring 14 is at least once wrapped completely around the shaft body 20 of the trip shaft 19.
  • a main resilient action of the actuating extension 12 can be achieved radially to the direction of rotation of the trip shaft 19.
  • the bell crank 8 has a support bearing 15, on which, the, a torsion spring 14 comprehensive, actuating extension 12 is supported, and / or that the spring 14 on a support 16 supported, which is arranged on the control extension 11.
  • the support bearing 15 and the support 16 are in the 3 and 4 particularly well recognizable.
  • the support bearing 15 is formed in the illustrated preferred embodiment as an L-shaped stop on which the spring 13 is fixed, and is held by the spring force.
  • the support 16 is formed as a transverse strut against which an angled end of the spring 13 abuts.
  • Fig. 3 shows a trip shaft 19 in the operating arrangement before or on release of the pawl 18, wherein it can be seen clearly that the actuating extension 12 rests against the support bearing 15.
  • Fig. 4 shows the same triggering wave as in Fig. 3 However, this was so far twisted that the actuating extension 12 further on the - not shown - pawl 18 rests, but without moving them further, wherein the actuating extension 12 is lifted from the support bearing 15.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP09717752A 2008-03-05 2009-02-17 Schaltgerät Active EP2263247B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09717752T PL2263247T3 (pl) 2008-03-05 2009-02-17 Łącznik

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0035908A AT509250A1 (de) 2008-03-05 2008-03-05 Schaltgerät
PCT/AT2009/000056 WO2009108967A1 (de) 2008-03-05 2009-02-17 Schaltgerät

Publications (2)

Publication Number Publication Date
EP2263247A1 EP2263247A1 (de) 2010-12-22
EP2263247B1 true EP2263247B1 (de) 2011-07-13

Family

ID=40852337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09717752A Active EP2263247B1 (de) 2008-03-05 2009-02-17 Schaltgerät

Country Status (15)

Country Link
US (1) US8143980B2 (sl)
EP (1) EP2263247B1 (sl)
CN (1) CN101527233B (sl)
AR (1) AR070780A1 (sl)
AT (2) AT509250A1 (sl)
AU (1) AU2009221605A1 (sl)
BR (1) BRPI0909674A2 (sl)
CA (1) CA2717317A1 (sl)
ES (1) ES2372087T3 (sl)
IL (1) IL207560A0 (sl)
PL (1) PL2263247T3 (sl)
RS (1) RS51945B (sl)
RU (1) RU2498440C2 (sl)
SI (1) SI2263247T1 (sl)
WO (1) WO2009108967A1 (sl)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBG20060065A1 (it) * 2006-12-21 2008-06-22 Abb Service Srl Dispositivo di protezione per un interruttore automatico e interruttore automatico comprendente tale dispositivo.
WO2013130044A1 (en) * 2012-02-28 2013-09-06 Siemens Aktiengesellschaft Circuit breaker thermal-magnetic trip units and methods
DE102012216177A1 (de) * 2012-08-28 2014-03-06 Siemens Aktiengesellschaft Vorrichtung zur Justage eines Klappankers
KR200491965Y1 (ko) * 2016-05-04 2020-07-08 엘에스일렉트릭(주) 회로차단기의 가 조정 열동 트립 기구
FR3052909B1 (fr) * 2016-06-17 2018-07-13 Hager-Electro Sas Appareil de protection du type disjoncteur comportant une butee de reglage du ressort de calibrage

Family Cites Families (27)

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Publication number Priority date Publication date Assignee Title
US2673264A (en) * 1952-04-17 1954-03-23 Fed Electric Prod Co Circuit breaker with adjustable thermal and magnetic controls
SU518816A1 (ru) * 1973-10-15 1976-06-25 Предприятие П/Я Х-5749 Привод вакуумного выключател
DD204343A1 (de) 1981-08-13 1983-11-23 Wolfgang Suess Leitungsschutzschalter in schmalbauweise
US4503408A (en) * 1982-11-10 1985-03-05 Westinghouse Electric Corp. Molded case circuit breaker apparatus having trip bar with flexible armature interconnection
US4679016A (en) * 1986-01-08 1987-07-07 General Electric Company Interchangeable mechanism for molded case circuit breaker
DE3909230A1 (de) 1989-03-21 1990-10-04 Felten & Guilleaume Energie Schaltmechanismus fuer niederspannungsschaltgeraete
US4951015A (en) * 1989-10-05 1990-08-21 Westinghouse Electric Corp. Circuit breaker with moving magnetic core for low current magnetic trip
US5214402A (en) * 1991-12-23 1993-05-25 North American Philips Corporation Trip link latch and interpole link for a circuit breaker
DE4227213C2 (de) 1992-08-17 1995-08-31 Kloeckner Moeller Gmbh Schaltschloß für einen Leistungsschalter
FR2703822B1 (fr) * 1993-04-07 2002-01-25 Merlin Gerin Disjoncteur multipolaire à assemblage modulaire .
DE4442417C1 (de) * 1994-11-29 1996-02-15 Kloeckner Moeller Gmbh Schaltschloß für ein Niederspannungs-Schaltgerät
RU2136074C1 (ru) * 1996-09-30 1999-08-27 Акционерное общество закрытого типа "Контактор" Выключатель автоматический
US5872495A (en) * 1997-12-10 1999-02-16 Siemens Energy & Automation, Inc. Variable thermal and magnetic structure for a circuitbreaker trip unit
FR2774806B1 (fr) * 1998-02-09 2000-03-17 Schneider Electric Ind Sa Dispositif de declenchement pour un disjoncteur equipe d'une signalisation de defaut electrique
US6100777A (en) * 1999-08-18 2000-08-08 Eaton Corporation Multi-pole circuit breaker with multiple trip bars
US6249197B1 (en) * 1999-08-27 2001-06-19 Eaton Corporation Circuit interrupter providing improved securement of an electrical terminal within the housing
US6236294B1 (en) * 1999-08-27 2001-05-22 Eaton Corporation Circuit interrupter with a trip mechanism having improved spring biasing
US6184763B1 (en) * 1999-08-30 2001-02-06 Eaton Corporation Circuit interupter with screw retainment
DE19952186A1 (de) 1999-10-29 2001-05-03 Moeller Gmbh Elektrisches Schutzschaltgerät
US6208228B1 (en) * 2000-02-16 2001-03-27 Eaton Corporation Circuit interrupter with improved trip bar assembly accomodating internal space constraints
WO2001071750A1 (fr) 2000-03-17 2001-09-27 Mitsubishi Denki Kabushiki Kaisha Disjoncteur
US6407653B1 (en) * 2000-09-20 2002-06-18 Eaton Corporation Circuit interrupter with a magnetically-induced automatic trip assembly having adjustable armature biasing
US6445274B1 (en) * 2000-11-10 2002-09-03 Eaton Corporation Circuit interrupter with thermal trip adjustability
CN2472341Y (zh) * 2001-03-26 2002-01-16 上海电器科学研究所 一种集成化的控制与保护开关电器
CN1288689C (zh) * 2001-09-25 2006-12-06 莫勒自动***公司 保护开关的开关机构
ITMI20012586A1 (it) * 2001-12-10 2003-06-10 Abb Service Srl Polo elettrico per un interruttore di potenza di bassa tensione, e relativo interruttore
DE102006005697A1 (de) * 2006-02-08 2007-08-16 Moeller Gmbh Einrichtung zum Auslösen eines elektrischen Schaltgeräts

Also Published As

Publication number Publication date
PL2263247T3 (pl) 2012-04-30
WO2009108967A1 (de) 2009-09-11
ES2372087T3 (es) 2012-01-13
CN101527233A (zh) 2009-09-09
CA2717317A1 (en) 2009-09-11
EP2263247A1 (de) 2010-12-22
ATE516593T1 (de) 2011-07-15
US8143980B2 (en) 2012-03-27
AU2009221605A1 (en) 2009-09-11
RS51945B (en) 2012-02-29
RU2498440C2 (ru) 2013-11-10
CN101527233B (zh) 2014-07-30
IL207560A0 (en) 2010-12-30
AT509250A1 (de) 2011-07-15
BRPI0909674A2 (pt) 2015-09-22
SI2263247T1 (sl) 2012-03-30
US20090224861A1 (en) 2009-09-10
RU2010140618A (ru) 2012-04-10
AR070780A1 (es) 2010-05-05

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