EP1526560A2 - Disjoncteur électrique - Google Patents

Disjoncteur électrique Download PDF

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Publication number
EP1526560A2
EP1526560A2 EP04023529A EP04023529A EP1526560A2 EP 1526560 A2 EP1526560 A2 EP 1526560A2 EP 04023529 A EP04023529 A EP 04023529A EP 04023529 A EP04023529 A EP 04023529A EP 1526560 A2 EP1526560 A2 EP 1526560A2
Authority
EP
European Patent Office
Prior art keywords
armature
circuit breaker
hinged armature
contact point
release
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Withdrawn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
EP04023529A
Other languages
German (de)
English (en)
Other versions
EP1526560A3 (fr
Inventor
Joachim Dipl.-Ing. Becker
Bernd Dipl.-Ing. Siedelhofer
Klaus Zimmer
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 Patent GmbH
Original Assignee
ABB Patent 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 ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP1526560A2 publication Critical patent/EP1526560A2/fr
Publication of EP1526560A3 publication Critical patent/EP1526560A3/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Withdrawn legal-status Critical Current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
    • H01H71/1081—Modifications for selective or back-up protection; Correlation between feeder and branch circuit breaker
    • 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
    • H01H71/402—Combined electrothermal and electromagnetic mechanisms in which the thermal mechanism influences the magnetic circuit of the electromagnetic 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/42—Induction-motor, induced-current, or electrodynamic release mechanisms
    • H01H71/43—Electrodynamic release mechanisms
    • 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
    • H01H71/44—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay

Definitions

  • the invention relates to an electrical circuit breaker according to the preamble of claim 1 and of claim 9.
  • the entrance is a so-called Main circuit breaker assigned, on each with its own circuit breakers connect protected power lines to consumers.
  • This main circuit breaker on the one hand has the task, then, if in a departure to one Consumer a short circuit occurs, the circuit breaker in this consumer string by supporting it by opening the main contact point the resulting arc limits the short - circuit current to values that the Can switch off circuit breaker in the consumer string. If the consumer strand circuit breaker has disconnected the short circuit falls the main circuit breaker back into closed position. On the other hand between the main circuit breaker and the consumer line output Short circuit occurs, the main circuit breaker should respond and the short-circuit current switch off.
  • a main circuit breaker of the type mentioned is known from DE 195 26 592 A1 become known.
  • the main circuit breaker has a main current path in which a thermal release, a contact point and a shock anchor system
  • the impact anchor system on the contact point does not have a switch lock acts.
  • Parallel only to the contact point is a secondary current path, in which is a current limiting resistor, a thermal release and a contact point are located; the thermal release in the main current path acts via a switch lock on the contact points in the main current path and secondary current path; as well the thermal release in the bypass circuit acts via the switch lock on both Contact points.
  • the impact armature system acts on the main contact point, as the contact point in the main current path also called , whereby the current flows through the secondary current path in which it passes through the limiting resistor is limited so that the short circuit current from the circuit breaker can be turned off in the consumer line.
  • an electrical switching device has become known at which in a main current path has a pawl anchor system as well as a main contact point are located; parallel to this main contact point is a secondary current path with a Current limiting resistor, another shock anchor system, a second contact point and an electromagnetic release associated with one of these contact locations arranged. If a short circuit occurs behind the main circuit breaker, then opens the impact anchor system in the main current path, the contact point, so that the Current is commutated in the secondary current path. This short-circuit current is through limits the resistance, and at the same time the contact point on the impact anchor system kept in the off-circuit path in the open position. The electromagnetic trigger then opens the other contact point, which via a switch lock the main contact point is held in the open position.
  • the two Schlagankersysteme are in a sense spatially in a row, acting on one anchor each, both together are connected so that the armature of the impact anchor system in the secondary flow path the Contact point keeps open, creating a pump at the contact point in the main current path is avoided.
  • the anchors act without delay on the contact point.
  • both impact anchor systems are also instantaneous impact anchor systems.
  • an automatic or main circuit breaker in which in the main current path a shock anchor system and a contact point and in Maustrompfad another Schlagankersystem, a limiting resistor and a thermal release are housed.
  • the secondary flow path is parallel to the impact anchor system and the contact point.
  • the impact anchor system acts on it
  • the contact point in the main current path and is through the impact anchor system in the secondary flow path kept open; as soon as the thermal release activates the switch lock, the contact point, which is outside the parallel circuit, remains permanent open.
  • Both the trigger in the main current path and the one in the secondary current path are instantaneous triggers that can also be designed in a structural unit, wherein on the magnetic core, the exciter windings of both triggers are applied. As the structural merger of the two impact anchor systems then actually is formed, is not apparent from DE 31 33 200 A1.
  • the object of the invention is a circuit breaker of the type mentioned so on to form that cooperating components integrated into a unit are.
  • the electromagnetic release acts on a switch lock for permanent opening of the main contact and the isolating contact point a and
  • the electromagnetic release has means that delay the trigger to lead.
  • a yoke of a hinged armature magnet release and the bridge of the yoke of the impact armature system is surrounded by a coil winding, which at current flow tighten the hinged anchor.
  • the yoke of the hinged armature release can be L-shaped, wherein the first leg in extension of the crosspiece in the vicinity of the impact anchor. the impact anchor system while the second leg is parallel to the longitudinal ridge runs.
  • the longitudinal webs of the impact anchor system extension legs be formed, wherein on one of the extension legs of the hinged armature is rotatably mounted and while in the attracted state approximately parallel to the longitudinal axis of the impact armature of Shock anchor system runs.
  • the electromagnetic release can be assigned as a thermobimetal actuator, which rests against the hinged armature and is arranged so that it heats up in the Direction of rotation of the hinged armature deflects. Due to the design of the electromagnetic Trigger, the hinged armature is not tightened. When heated that expresses Thermobimetall the hinged armature to the yoke, which reduces the air gap there and the hinged armature is tightened. The free end of the bimetallic strip activates and the hinged armature is tightened. The free end of the bimetallic presses together with the hinged armature a release lever, the release is delayed.
  • the bimetallic strip in the path of movement engage the free end of the hinged anchor and holds the hinged anchor until, until it flexes due to a short circuit current.
  • the bimetallic covers the hinged armature and is with its free end with the free end of the hinged anchor over one Coupling device coupled, such that at a short-circuit current of the armature is held by the bimetallic strip until the bimetallic strip due to its Warming swings towards the hinged armature.
  • a Main contact point 13 As a double contact point with two individual contact points 14 and 15 is formed, of course, but also designed as a single contact point and an impact anchor system 16.
  • the impact anchor system 16 operates according to dashed line 17 on the main contact point 13 a.
  • Parallel to the main contact point 13 is a Crowstrompfad 18 connected in which a MaustrompfadWalletstelle 19, a Limiting resistor 20 and a delayed release 21 are provided, wherein the delayed trigger 21, as shown in more detail below, an electromagnetic Trigger is.
  • the two triggers 21 and 16 hereby have a common yoke iron 22, wherein the delay by an actuator 23, the electromagnetic Trigger is assigned, is effected.
  • the thermal release 12 acts on the action line 24 on a switching mechanism 25; of the Delayed trigger 21 acts via a line of action 26 also on the switch lock and via the switching mechanism 25, the main contact point 13 via the line of action 27 and the Crowstrompfad.stelle 19 on the line of action 28 permanently opened.
  • FIG. 2 shows a circuit breaker which is very similar to that shown in FIG. In this case are in the main current path 10, the terminal 11, the trigger 12, the main contact point 13 and the impact anchor system 16 and then the terminal 29. In the same way, a Crowstrompfad 18a is present by the limiting resistor 20 is located.
  • the contact point 19 is used as a contact point 19a in the main current path 10a has been used.
  • the mode of action is similar to that Circuit breaker according to Fig. 1, wherein the trigger 21 via the line of action 26, the switching mechanism 25 is unlatched, so that by means of the switching mechanism 25 via a line of action 28a, the contact point 19a is permanently opened.
  • FIGS. 3 to 8 now show the special configuration of the component unit Impact anchor system 16, common iron circle 22, anchor system 21 with actuator 23rd
  • a yoke 30 is provided, which here as Box frame with two longitudinal webs 31, 32 and transverse webs 33, 34 is formed.
  • a transverse web 33 is perpendicular to a core 35 connected and in the area the other crosspiece 34 is a movable impact armature 36; both are surrounded by a bobbin 37 and around this bobbin 37 around is a first coil 38 wound around. That between the armature 36 and the magnetic core If necessary, a restraining spring is provided, is not for the invention here relevant.
  • the first leg 41 in the same plane is like the web or crosspiece 34, whereas the second leg 42 parallel to Longitudinal ridge 32 runs and this projects beyond its length.
  • a hinged armature 43 via a storage 44 superimposed, which is under the tensile force of a tension spring 45, the hinged armature 44 seeks to deduct from the front end 46 of the second leg 42.
  • the anchor 44 is associated with a bimetallic strip 47, so that the armature 44 is a stop 48 of a Trigger lever 49 is applied when the armature is pulled against the end face 46.
  • the current commutates into the secondary current path 18, so that flows through the limiting resistor 20 reduced short-circuit current through the coil 50, wherein the coil 50 is connected via a connecting line 52 to the bimetallic strip 47.
  • the magnetic field generated by the limited short-circuit current of the coil 50 is sufficient the dimensioning z. B. the coil 50 is not the hinged armature 44 against the end face of the thigh 42.
  • the bimetallic strip 47 is provided, which practically supports the anchor: due to the current flowing through the bimetallic strip this bends out to the hinged armature 44, so that it is the hinged armature 44 in Direction of the end face 46 moves or presses.
  • This system has a yoke, which the longitudinal webs 31 and 32 and the transverse webs 33 and 34 with the impact anchor 36 and the magnetic core 35 and the coil 38 includes.
  • the anchor system 21 is formed by the transverse webs 33 and 34 extension webs 60, 61, wherein these webs lie in the same plane as the associated transverse webs 33 and 34.
  • a hinged armature 62 hinged At the front side of the extension leg 61 is a hinged armature 62 hinged, which covers the end face 63 of the extension leg.
  • the coil 50 is present and with the hinged armature 62 is a Thermobimetal 64 coupled.
  • the delayed trigger responds, decreases the bimetallic strip 64 by its deflection the distance between the Hinged armature 62 and the end face 63, so that the time to hitting the hinged armature to a stop 65 of a release lever 66, which corresponds to the release lever 49, is delayed.
  • the hinged armature 62 would be sized be that the shutter is responsive; it would be at corresponding current flow attracted without time delay against the end face 63.
  • the yoke arrangement is a yoke arrangement similar to FIG. 3 provided, with the longitudinal web 32 and the second leg 42 and with the hinged armature 44.
  • the hinged armature 44 which protrudes beyond the second leg 42, interacts with a bimetallic 67 outside the magnet system, wherein when a short-circuit current of the hinged armature 44 so long from the free end 46 of the second leg 42 is kept away until the Thermobimetall sufficiently heated and in the dashed line 67 ' has bent.
  • Fig. 8 shows a similar shape;
  • the bimetallic strip is arranged so that it covers the longitudinal web 32 and the second leg 42;
  • the hinged armature 44 is with the thermostatic bimetal 68 coupled via a coupling element 69; if a corresponding Short-circuit current is present, holds the bimetallic strip 68 via the coupling element 69 the hinged armature 44 in the open position, in which he the front edge of second leg still not touched and, above all, not yet a corresponding Can actuate release lever. Only then, when the bimetallic strip 68 has sufficiently heated and bent by the short-circuit current, the Swing armature 44 actuate a corresponding release lever.
  • the yoke assembly is selected as in the embodiment of Fig. 3; instead of a bimetallic strip is in the extension of the crosspiece 33, a permeability-changing permanent magnet 70 is arranged.
  • the permanent magnet 70 is heated by the current flowing at Coil 50 indirectly heated and loses its permeability at elevated temperature. Thereby the air gap between the ends of the crosspiece 33 and the second Leg 42 increases, so that the magnetic field lines no longer over the permanent magnet 70 close, but on the hinged armature 44, which against the leg 32 is tightened and actuate a corresponding release lever can.
  • the short-circuit current flows through a busbar 71 and in the same direction by a bimetallic strip 73.
  • the bimetallic strip 73 heats up bends into the dashed layer 73 'from. Because arranged in parallel and tighten in the same direction current-carrying current paths, the will Thermobimetal 73 with a corresponding reduction in the distance from the Busbar 71 tightened and can operate a corresponding trigger lever.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
EP04023529A 2003-10-25 2004-10-02 Disjoncteur électrique Withdrawn EP1526560A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003149907 DE10349907A1 (de) 2003-10-25 2003-10-25 Elektrischer Leitungsschutzschalter
DE10349907 2003-10-25

Publications (2)

Publication Number Publication Date
EP1526560A2 true EP1526560A2 (fr) 2005-04-27
EP1526560A3 EP1526560A3 (fr) 2005-05-25

Family

ID=34384477

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04023529A Withdrawn EP1526560A3 (fr) 2003-10-25 2004-10-02 Disjoncteur électrique

Country Status (2)

Country Link
EP (1) EP1526560A3 (fr)
DE (1) DE10349907A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007095874A1 (fr) 2006-02-23 2007-08-30 Siemens Aktiengesellschaft Dispositif de coupure en surintensité
DE102011008829A1 (de) * 2011-01-19 2012-07-19 Abb Ag Installationsschaltgerät
EP2595169A1 (fr) 2011-11-21 2013-05-22 ABB Technology AG Mécanisme de libération thermo-magnétique pour disjoncteurs

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE499213C (de) * 1927-07-21 1930-06-06 Schiele & Bruchsaler Industrie Ausloesevorrichtung an elektrischen Schaltern
DE645755C (de) * 1933-04-25 1937-06-03 Karel Kesl Elektrodynamisch-thermisch wirkendes UEberstromrelais
FR870490A (fr) * 1940-03-01 1942-03-12 Acec Interrupteur automatique d'installation
CH230577A (de) * 1940-09-25 1944-01-15 Kesl Karel Elektrische Schalteinrichtung.
DE3133200A1 (de) * 1981-08-21 1983-03-03 Siemens AG, 1000 Berlin und 8000 München Leitungsschutzschalter, geeignet als vorautomat
US5432491A (en) * 1992-03-31 1995-07-11 Ellenberger & Poensgen Gmbh Bimetal controlled circuit breaker
DE19526592A1 (de) * 1995-07-21 1997-01-23 Abb Patent Gmbh Elektrischer Schalter, insbesondere Leitungsschutzschalter

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2930960A1 (de) * 1979-07-31 1981-02-19 Bbc Brown Boveri & Cie Selektivschutzeinrichtung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE499213C (de) * 1927-07-21 1930-06-06 Schiele & Bruchsaler Industrie Ausloesevorrichtung an elektrischen Schaltern
DE645755C (de) * 1933-04-25 1937-06-03 Karel Kesl Elektrodynamisch-thermisch wirkendes UEberstromrelais
FR870490A (fr) * 1940-03-01 1942-03-12 Acec Interrupteur automatique d'installation
CH230577A (de) * 1940-09-25 1944-01-15 Kesl Karel Elektrische Schalteinrichtung.
DE3133200A1 (de) * 1981-08-21 1983-03-03 Siemens AG, 1000 Berlin und 8000 München Leitungsschutzschalter, geeignet als vorautomat
US5432491A (en) * 1992-03-31 1995-07-11 Ellenberger & Poensgen Gmbh Bimetal controlled circuit breaker
DE19526592A1 (de) * 1995-07-21 1997-01-23 Abb Patent Gmbh Elektrischer Schalter, insbesondere Leitungsschutzschalter

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007095874A1 (fr) 2006-02-23 2007-08-30 Siemens Aktiengesellschaft Dispositif de coupure en surintensité
US7936548B2 (en) 2006-02-23 2011-05-03 Siemens Aktiengesellschaft Overcurrent switching apparatus
EP1992003B1 (fr) * 2006-02-23 2013-11-27 Siemens Aktiengesellschaft Dispositif de coupure en surintensité
DE102011008829A1 (de) * 2011-01-19 2012-07-19 Abb Ag Installationsschaltgerät
DE102011008829B4 (de) * 2011-01-19 2012-08-09 Abb Ag Installationsschaltgerät
EP2595169A1 (fr) 2011-11-21 2013-05-22 ABB Technology AG Mécanisme de libération thermo-magnétique pour disjoncteurs
WO2013075770A1 (fr) 2011-11-21 2013-05-30 Abb Technology Ag Mécanisme thermomagnétique de déclenchement pour coupe-circuit
CN104054154A (zh) * 2011-11-21 2014-09-17 Abb技术有限公司 用于断路器的热磁释放机构
CN104054154B (zh) * 2011-11-21 2016-03-09 Abb技术有限公司 用于断路器的热磁释放机构

Also Published As

Publication number Publication date
DE10349907A1 (de) 2005-05-25
EP1526560A3 (fr) 2005-05-25

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