EP2479772A1 - Commutateur d'installation - Google Patents

Commutateur d'installation Download PDF

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Publication number
EP2479772A1
EP2479772A1 EP11010153A EP11010153A EP2479772A1 EP 2479772 A1 EP2479772 A1 EP 2479772A1 EP 11010153 A EP11010153 A EP 11010153A EP 11010153 A EP11010153 A EP 11010153A EP 2479772 A1 EP2479772 A1 EP 2479772A1
Authority
EP
European Patent Office
Prior art keywords
contact
release
lever
switching device
overcurrent
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.)
Withdrawn
Application number
EP11010153A
Other languages
German (de)
English (en)
Inventor
Joachim Wendel
Roland Ritz
Joachim Becker
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.)
ABB AG Germany
Original Assignee
ABB AG Germany
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 ABB AG Germany filed Critical ABB AG Germany
Publication of EP2479772A1 publication Critical patent/EP2479772A1/fr
Withdrawn legal-status Critical Current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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2418—Electromagnetic mechanisms combined with an electrodynamic current limiting mechanism
    • 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
    • H01H71/1045—Multiple circuits-breaker, e.g. for the purpose of dividing current or potential drop
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/107—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by the blow-off force generating means, e.g. current loops
    • H01H77/108—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by the blow-off force generating means, e.g. current loops comprising magnetisable elements, e.g. flux concentrator, linear slot motor
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts

Definitions

  • the invention relates to an electrical service switching device having a current path which runs in a housing between a first and a second connection point and which can be opened and closed at least one first contact point comprising a first contact lever, with an electromagnetic short-circuit current release, the magnetic circuit with an air gap comprising, with an overcurrent release, which comprises a derailleur actuator, which transitions in an overcurrent release from a rest position to a release position, and with a derailleur, which comprises a pivotable between a rest position and a release position impact lever and a release lever, according to the preamble of claim 1.
  • Generic installation switching devices may be, for example, circuit breaker, residual current device, motor protection switch or selective main line circuit breaker.
  • a generic circuit breaker is for example in the DE 10 2008 006 863 A1 shown.
  • the disconnection of a short-circuit current by means of a percussion armature takes place.
  • the field of a current flowing through the solenoid energizes the magnetic circuit within the electromagnetic short-circuit current release, by electrodynamic interaction of the impact armature is moved.
  • the striker is coupled to a striker pin that strikes the contact lever so that the contact point is opened, and at the same time acts on the derailleur, which leads to the unlatching of the derailleur and thus to the permanent keeping open of the contact point, so long until the rear derailleur is latched again and the contact point can then be closed again.
  • the overcurrent release occurs in known service switching devices using a thermo-mechanical release element, usually a strip of bimetallic strip.
  • the overcurrent causes heating of the bimetallic strip and its resulting deflection.
  • the switching mechanism In the bent state of the bimetallic strip unlatched via a corresponding connection by means of a Wegsbettechnik Trentsgliedes the switching mechanism, whereupon the contact point is also permanently open, until the rear derailleur is latched and the contact point can then be closed again.
  • the rear derailleur in the in the DE 10 2008 006 863 A1 embodiment shown has a Verklinkungsstelle, which is formed between a release lever and a latch lever.
  • an intermediate lever is present, which cooperates with a contact lever.
  • a switching handle is present, which is coupled via a bracket with the intermediate lever, wherein the intermediate lever is mounted relative to the latch lever slidably.
  • latched Verklinkungsstelle creates a rigid lever chain of the shift handle on the bracket, the intermediate lever on the contact lever.
  • unlatched Verklinkungsstelle breaks the rigid coupling together and the intermediate lever can move relative to the latch lever.
  • the unlatching of the Verklinkungsstelle can be done by acting on the release lever to pivot it so that the Verklinkungsstelle is unlatched.
  • a hammer is provided, which acts on its pivoting on the release lever and pivots this for unlatching the Verklinkungsstelle.
  • the impact armature of the magnetic short-circuit current release and the thermal bimetal of the overcurrent release both act on the impact lever, the release lever is indirectly brought via the hammer in its Entklinkungslage.
  • circuit breaker For mounting known circuit breaker are usually mounted with a quick mounting on a top hat rail.
  • a circuit breaker for DC applications with very fast short-circuit shutdown and temperature-independent overcurrent release should often be used.
  • the telecommunications infrastructure When used in cabinets, for example, the telecommunications infrastructure often 19-inch bays are used with a certain height. This height measure has a division unit of 1 U, about 44.45 mm. Switchgear for use in these control panels should not exceed the height of 1 U.
  • a direct contact and attachment of the switching device should be done on a copper rail. Thus, the usual size of known circuit breakers is not usable.
  • the current path comprises at least one second contact point comprising a second contact lever
  • the second contact lever is at least partially arranged in the air gap of the magnetic circuit, so that in the case of short circuit due to the interaction of the current flow with the magnetic flux within the air gap to a rapid opening of the At least one second contact point leading electrodynamic force acting on the second contact lever may arise
  • the derailleur acts on a first operative connection line on the first contact lever to open and / or keep open the first contact point
  • in the event of overcurrent release of the overcurrent release acts on a second operative connection line on the Rear derailleur for opening and keeping open the first contact point by the rear derailleur
  • a short-circuit release of the second contact lever acts on the rear derailleur to a third operative connection line the first contact point.
  • a switching mechanism is used based on that in the DE 10 2008 006 863 A1 described.
  • An inventive installation switching device has the advantage that the short circuit current shutdown is faster than in a conventionally known device, the other functional characteristics, such as the overcurrent release, the permanent keeping open the contact point after unlatching the rear derailleur, the reconnection after re-latching the rear derailleur, etc., continue to be available as usual.
  • the magnetic short-circuit current release as used in the service switching device according to the invention has the advantage that a direct interaction between the magnetic flux or field of the magnetic circuit and the second contact lever can take place.
  • the opening of the second contact point can be made much faster than with impact armature systems used in circuit breakers in the prior art, in which, as already mentioned, due to the mechanical inertia of the participating movable components, the release speed is limited.
  • a force which results on the known as Lorentz force force of a magnetic field on a moving in the field electric charge When used in the magnetic short-circuit current trip as used in the service switching device according to the invention acts on the second contact lever, a force which results on the known as Lorentz force force of a magnetic field on a moving in the field electric charge.
  • the derailleur actuator of the overcurrent release is coupled to an overcurrent magnetic circuit, wherein the force acting on the derailleur actuator force is caused by the magnetic field of the overcurrent, wherein the derailleur actuator is coupled to an electromagnetic damping element for setting the tripping delay time, and wherein the Derailleur actuator for adjusting the overcurrent trip threshold is coupled to an adjusting member.
  • the overcurrent release is realized as a magnetic trip system. This has the advantage that the overcurrent release can be temperature independent. For in the known in the prior art Thermobimetallauslösern the bimetal deformed even with a change in the ambient temperature, which is why such an overcurrent release according to the prior art usually has to be coupled with a compensation device.
  • the magnetic overcurrent release used according to the invention in the service switching device shows no temperature dependence.
  • the housing has a substantially cuboid shape, with a front and a rear narrow side and with an upper and a lower longitudinal side, and is provided on the front narrow side with an operating lever for manual operation of the derailleur, and to the The short-circuit current release and the overcurrent release are connected on the front narrow side of the rear derailleur.
  • the cuboid shape of the housing allows use in control cabinets with 19-inch bays.
  • a preferred embodiment provides that the short-circuit current release and the overcurrent release in the flow direction of the current through the current path are arranged one behind the other in the housing. This allows a particularly good space utilization.
  • the first connection point is designed as a connection plate for screwing with a contact rail. This makes the connection to a copper rail in the control cabinet possible.
  • a first coupling rod for coupling the derailleur operating member of the overcurrent release is provided with the release lever.
  • the rear derailleur actuator is provided in an advantageous embodiment at its free end with a cam having control cam body, wherein the first coupling rod, with a first end is supported on the control cam, is pressed at the transition of the rear derailleur actuator into the release position with its second end against the release lever ,
  • the Heidelbergsbettechnik Inc. a rotatably mounted about its longitudinal axis shaft. This allows efficient power transmission between the overcurrent release directly on the release lever.
  • an implementation of the rotation of the shaft is a longitudinal feed of the coupling rod for coupling to the rear derailleur. The resulting moments and forces can be easily absorbed by the housing, without too much mechanical stress on the sub-components.
  • the first contact lever is acted upon by the restoring force of a first contact pressure spring in the direction of the first fixed contact piece. It is a contact pressure spring arrangement as in the derailleur according to the DE 10 2008 006 863 A1 described.
  • the second contact lever is designed as a movable contact bridge, which is provided with two movable contact pieces which cooperate with two fixed contact pieces to form a double contact point, wherein the second contact lever by the restoring force of a second contact pressure spring towards the fixed Contact pieces is acted upon.
  • a double contact point is created, which has the advantage that each individual part contact point is less heavily loaded in a short-circuit power cut than a single contact point.
  • a second coupling rod for coupling the movable contact bridge is provided with the hammer of the derailleur.
  • FIG. 1 shows a schematic view of an installation switching device 1 according to the invention, here a circuit breaker, with a housing 12.
  • the housing 12 has a substantially rectangular shape, with a front and a rear narrow side 15, 15 'and with an upper and a lower longitudinal side 17, 17 '.
  • On the front narrow side 15 it is provided with an actuating lever 16 for manual operation of the derailleur 8, and to the arranged on the front narrow side 15 rear derailleur 8, the short-circuit current release 6 and the overcurrent release 7 connects.
  • the short-circuit current release 6 is constructed in principle as in the WO 2010/130414 A1 described.
  • the overcurrent release works in principle as in the WO 2010/133346 A1 described.
  • Derailleur 8 works as in the DE 10 2008 006 863 A1 described.
  • a current path which at a first contact lever 5 comprehensive first contact point 4, which comprises a first fixed and a first movable contact piece 2, 3, can be opened and closed.
  • the electromagnetic short-circuit current release 6 comprises a magnetic circuit with an air gap.
  • the overcurrent release 7 includes in the rear derailleur actuator 48, which transitions from a rest position to a release position in an overcurrent release.
  • the derailleur 8 includes a pivotable between a rest position and a release position impact lever 21 and a release lever 20th
  • the current path comprises a second contact point, as a double contact point 4 ', 4 "formed with a second contact lever, also referred to as a double contact bridge 5'.
  • the second contact lever 5 ' is at least partially arranged in the air gap of the magnetic circuit, so that in the event of a short circuit due to the interaction of the Current flow with the magnetic flux within the air gap can lead to a rapid opening of the second contact point 4 ', 4 "leading electrodynamic force on the second contact lever 5'.
  • the switching mechanism 8 acts on the first contact lever 5 via a first operative connection line 5 for opening and / or keeping open the first contact point 4.
  • the overcurrent release 7 acts via a second operative connection line 10 on the switching mechanism 8 for opening and keeping open the first contact point 4 by the rear derailleur 8.
  • the overcurrent release 7 acts via a second operative connection line 10 on the switching mechanism 8 for opening and keeping open the first contact point 4 by the rear derailleur 8.
  • a short-circuit release of the second contact lever 5 acts on a third operative connection line 11 on the rear derailleur 8 for holding open the first contact point. 4
  • the overcurrent release 7 is a magnetically acting overcurrent release, as in WO 2010/133346 A1 described. On it a rear derailleur actuator in the form of a rotatably mounted about its longitudinal axis shaft 48 is formed. Furthermore, the overcurrent release 7 comprises an adjusting member in the form of a fetlock spring. In the case of an overcurrent, the magnetic circuit of the overcurrent release exerts a torque on the shaft 48 and tries to turn it clockwise. This will only happen when the drive torque acting on the shaft 48 exceeds the tether moment exerted on the shaft 48 by the tether spring. Thus, the threshold of the overcurrent release 7 is adjustable.
  • a cam body 51 is formed at the free end of the shaft 48. This has approximately the shape of a cylinder, which is partially cut laterally.
  • a control cam is formed in the control cam body.
  • the first coupling rod 60 supports off with a first end on the control curve. When turning the shaft 48, the control cam ensures that the first coupling rod 60 is pressed with its second end against the release lever 20 for unlatching the rear derailleur 8 and for opening the first contact point. 4
  • the rotational movement of the control cam body 51 is translated to the control cam in a linear movement and unlatches the derailleur 8 in an overcurrent draw.
  • the first contact point 4 opens and interrupts the circuit.
  • connection to the copper rail 61 which is part of a 19-inch drawer takes place.
  • the device is screwed to the copper rail 61 via a screw 62.
  • the contacting of the copper rail 61 at the first connection point 13 is provided on the connection side to the copper rail with a corrugation in order to achieve a secure contact.
  • a strand 63 is welded, which is connected to the first contact lever 5.
  • the installation switching device described above is particularly advantageous for protecting circuits at low nominal voltage, for example, 60V, AC or DC, because of the caused by the electrodynamic short-circuit release 6 very fast shutdown of a short circuit current no arc quenching is required; since the anode-cathode voltage is already so large that it exceeds the 60 V rated voltage, so that the current is interrupted; no additional arc voltage is required to counteract the voltage applied to the terminals for disconnection.
  • the installation switching device described above in applications with a strongly fluctuating ambient temperature, because due to the after a magnetic principle working overcurrent release no temperature compensation of the overcurrent release is required.
  • the present invention also includes any other combinations of preferred embodiments as well as individual design features or refinements, as long as these are not mutually exclusive.
EP11010153A 2011-01-19 2011-12-22 Commutateur d'installation Withdrawn EP2479772A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011008829A DE102011008829B4 (de) 2011-01-19 2011-01-19 Installationsschaltgerät

Publications (1)

Publication Number Publication Date
EP2479772A1 true EP2479772A1 (fr) 2012-07-25

Family

ID=45440054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11010153A Withdrawn EP2479772A1 (fr) 2011-01-19 2011-12-22 Commutateur d'installation

Country Status (4)

Country Link
US (1) US8451076B2 (fr)
EP (1) EP2479772A1 (fr)
CN (1) CN202275790U (fr)
DE (1) DE102011008829B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3101678A1 (fr) * 2015-06-01 2016-12-07 Wöhner GmbH & Co. KG Elektrotechnische Systeme Disjoncteur

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112015001430A5 (de) 2014-03-24 2016-12-15 Frenell Gmbh Absorbersystem
CN109616833B (zh) * 2018-11-19 2020-05-05 南京瑞力保护控制系统有限公司 可自由移动提拉的电力箱

Citations (7)

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Publication number Priority date Publication date Assignee Title
DE2435730A1 (de) * 1974-07-25 1976-02-05 Licentia Gmbh Strombegrenzender leitungsschutzschalter in schmalbauweise mit doppelunterbrechung
US4118681A (en) * 1976-05-12 1978-10-03 Merlin Gerin High-speed current-limiting device having a contact reclosing retarding member
EP0013642A1 (fr) * 1979-01-11 1980-07-23 Merlin Gerin Disjoncteur limiteur basse tension
WO2005091323A1 (fr) * 2004-03-17 2005-09-29 Abb Patent Gmbh Mecanisme de commutation pour appareil de distribution d'installation electrique
DE102008006863A1 (de) 2007-05-23 2009-01-22 Abb Ag Elektrisches Installationsschaltgerät
EP2251887A1 (fr) * 2009-05-15 2010-11-17 Abb Ag Dispositif de déclenchement électromagnétique
WO2010133346A1 (fr) 2009-05-19 2010-11-25 Abb Ag Déclencheur de surintensité indépendant thermiquement

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Publication number Priority date Publication date Assignee Title
US3815059A (en) * 1972-12-01 1974-06-04 Westinghouse Electric Corp Circuit interrupter comprising electromagnetic opening means
US4458224A (en) * 1982-04-20 1984-07-03 Siemens-Allis, Inc. Current-limiting circuit breaker adapter
KR930010967B1 (ko) * 1989-09-18 1993-11-18 미쯔비시 덴끼 가부시기가이샤 한류형 회로차단기
DE10332358A1 (de) * 2003-07-17 2005-02-03 Abb Patent Gmbh Kontaktsystem mit Magnetauslöser
DE10349907A1 (de) * 2003-10-25 2005-05-25 Abb Patent Gmbh Elektrischer Leitungsschutzschalter
DE102011008831A1 (de) * 2011-01-19 2012-07-19 Abb Ag Istallationsschaltgerät

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2435730A1 (de) * 1974-07-25 1976-02-05 Licentia Gmbh Strombegrenzender leitungsschutzschalter in schmalbauweise mit doppelunterbrechung
US4118681A (en) * 1976-05-12 1978-10-03 Merlin Gerin High-speed current-limiting device having a contact reclosing retarding member
EP0013642A1 (fr) * 1979-01-11 1980-07-23 Merlin Gerin Disjoncteur limiteur basse tension
WO2005091323A1 (fr) * 2004-03-17 2005-09-29 Abb Patent Gmbh Mecanisme de commutation pour appareil de distribution d'installation electrique
DE102008006863A1 (de) 2007-05-23 2009-01-22 Abb Ag Elektrisches Installationsschaltgerät
EP2251887A1 (fr) * 2009-05-15 2010-11-17 Abb Ag Dispositif de déclenchement électromagnétique
WO2010130414A1 (fr) 2009-05-15 2010-11-18 Abb Ag Dispositif de declenchement electromagnetique
WO2010133346A1 (fr) 2009-05-19 2010-11-25 Abb Ag Déclencheur de surintensité indépendant thermiquement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3101678A1 (fr) * 2015-06-01 2016-12-07 Wöhner GmbH & Co. KG Elektrotechnische Systeme Disjoncteur
WO2016193283A1 (fr) * 2015-06-01 2016-12-08 Wöhner GmbH & Co. KG Elektrotechnische Systeme Interrupteur de courant
CN107864683A (zh) * 2015-06-01 2018-03-30 维纳尔电气系统有限公司 电流断续器
CN107864683B (zh) * 2015-06-01 2019-07-19 维纳尔电气系统有限公司 电流断续器

Also Published As

Publication number Publication date
US8451076B2 (en) 2013-05-28
DE102011008829B4 (de) 2012-08-09
US20120182096A1 (en) 2012-07-19
DE102011008829A1 (de) 2012-07-19
CN202275790U (zh) 2012-06-13

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