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EP1860675B1 - Disjoncteur de puissance - Google Patents

Disjoncteur de puissance Download PDF

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Publication number
EP1860675B1
EP1860675B1 EP20070008639 EP07008639A EP1860675B1 EP 1860675 B1 EP1860675 B1 EP 1860675B1 EP 20070008639 EP20070008639 EP 20070008639 EP 07008639 A EP07008639 A EP 07008639A EP 1860675 B1 EP1860675 B1 EP 1860675B1
Authority
EP
European Patent Office
Prior art keywords
short
contact point
current
circuit breaker
armature
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
EP20070008639
Other languages
German (de)
English (en)
Other versions
EP1860675A3 (fr
EP1860675A2 (fr
Inventor
Wolfgang Dipl.-Ing. Pump
Roland Ritz
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 EP1860675A2 publication Critical patent/EP1860675A2/fr
Publication of EP1860675A3 publication Critical patent/EP1860675A3/fr
Application granted granted Critical
Publication of EP1860675B1 publication Critical patent/EP1860675B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H71/30—Electromagnetic mechanisms having additional short-circuited winding
    • 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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings
    • H01H50/46—Short-circuited conducting sleeves, bands, or discs

Definitions

  • the invention relates to a circuit breaker according to the preamble of claim 1.
  • the DE 38 33 128 A1 shows an electromagnetic release, which is against false triggering due to current peaks in the manner of inrush current peaks, as they occur in particular at capacitive load, and which operates with a tripping winding, which acts with its magnetic field on a tripping armature. It is provided that an annular body made of electrically conductive material between the tripping winding and the tripping armature is arranged in the induction region of the tripping winding.
  • the present invention is applicable to a selective main circuit breaker.
  • Such selective main circuit breakers are mainly used in the lower terminal compartment of meter places, for example in a domestic installation and protect in cooperation with the downstream circuit breakers, which are each associated with the individual consumers, the electrical installation system from dangerous overcurrents and short-circuit currents.
  • the upstream selective main circuit breaker must remain active, that is, in the switched, not tripped state, when overcurrents or short circuits occur that occur behind downstream circuit breakers and are disconnected from them.
  • the contact point of the main circuit breaker is only opened, whereby the downstream circuit breaker are supported in particular short-circuit current limiting; in case of overcurrents, the main circuit breaker should not respond. Only with overcurrents and short circuits between the selective main line circuit breaker and the downstream circuit breakers of the selective main circuit breaker to limit the short-circuit current and turn off the circuit.
  • selective main circuit breakers have, in addition to the main flow path, a secondary flow path which is arranged parallel to a main contact point.
  • a bimetallic strip is used in the secondary flow path.
  • the opening of the contact point of the main flow path causes a commutation of the current in the secondary flow path, whereby the thermostatic bimetal is activated, time-delayed unlocks the switching mechanism and thus permanently opens the main contact flow path, wherein a further contact point is arranged either in the secondary flow path or in the main flow path outside the secondary flow path, so that both the main contact point and this auxiliary contact point interrupt the current.
  • the main contact point in the selective main circuit breaker is thereby opened to achieve a current limit of a solenoid system, which has the consequence that closes the main contact point in the zero crossing of the current again.
  • This has the consequence that the selective triggering is delayed undefined and that due to pumping movements of the movable contact piece of the main contact point burn off the contact pieces of the main contact point, because in these movements arcs occur. For this reason, means are required to keep the main contact point open until the final shutdown.
  • a selective circuit breaker which has a main contact point in a main current path and parallel to the main contact point a secondary current path in which a secondary contact point is arranged.
  • a magnet system which opens the main contact point.
  • a side-current winding is provided, which is in the secondary current path and the exceeding of a certain current-time value in Maustrompfad, especially in persisting short-circuit, the switching mechanism unlatched to the permanent contact opening both the main contact point and the secondary contact point.
  • Such a bypass winding means an increased effort.
  • the object of the invention is to provide a circuit breaker of the type mentioned, in which the main contact point is kept open by simple means until even the current flow is interrupted by the auxiliary contact point and thus the current flow through the circuit breaker is finally turned off.
  • a KurDENring is attached to the armature and / or the magnetic core.
  • a short-circuit current phase-shifted current flow can be generated, which causes the magnetic force at the zero crossing of the short-circuit current does not become zero.
  • the short-circuit ring thus serves to keep open the magnet armature and, moreover, the main contact point as long as until the current flow through the auxiliary contact point is interrupted and thus the current flow through the circuit breaker is finally switched off.
  • Short circuit rings as such are known. Short circuit rings, in particular, used in contactors, which are introduced into at least one yoke surface of a U- or E-shaped lamellar armature and with which the humming of the contactor is prevented. In circuit breakers, especially in selective main line circuit breakers, such shorting rings have not been used in the armature or in the magnetic core.
  • the short-circuit ring can be arranged at different locations, as can be seen from the dependent claims.
  • a groove is mounted in the anchor end face, the outer circumference of which is spaced from the outer circumference of the anchor or the core. It is also possible to introduce on the outer peripheral edge of the anchor or core end face a gradation, in which the short-circuit ring is inserted; In a further embodiment, the short-circuit ring may be inserted in a circumferential groove on the outer surface of the armature and / or the core.
  • An electrical circuit breaker in particular a main circuit breaker, which is not shown here in detail, has a magnet system 10, a fixed Magnetic core 11 and a movable armature 12 is assigned.
  • the magnetic core 11 is fixed to a transverse web 13 of an iron circle 14 and has an axial passage 15 through which a striking pin 16, which acts on a movable contact piece of a contact point from the armature 12 engages. It is located in the web 13 bore 16 which is aligned with the passage 15.
  • the magnetic core 11 is surrounded by a coil tube 17 and fixed therein, and the coil tube 17 is surrounded by a coil winding 18 having a lead 19 and a lead 20, so that the coil 18 via the lead 19 and lead 20 is turned into a current path is.
  • a selective main circuit breaker this is a main current path.
  • the coil tube 17 engages at least partially the armature 12, which is held by a spring 21 at a distance D to the magnetic core 11, wherein this distance between the end faces 22 of the magnetic core 23 and the armature is located.
  • the spring 21 acts on the magnet armature 12 in the direction away from the magnetic core 23.
  • the iron circle 14 has two parallel to the direction of movement of the armature 12 extending longitudinal webs 24 and 25, which are connected to each other by means of a further transverse web 26, wherein the further transverse web 26 has a through hole 27 through which the armature 12 can reach through.
  • a circumferential groove 28 is introduced, whose outer circumference from the outer periphery of the outer surface of the magnetic core occupies a distance d.
  • a short-circuit ring 29 is used, whose function will be explained below.
  • the short-circuit ring 29 is made of electrically highly conductive material, in particular copper.
  • the short-circuit ring 29 is inserted into the end face 22 of the magnetic core 11.
  • the short-circuit ring 29 in a correspondingly arranged groove in the magnet armature in the same way Insert 12; the arrangement of the groove 28 on the armature 12 is equal to the arrangement of the short-circuit ring and the groove 28 on the magnetic core.
  • FIGS. 3 and 4 show two different arrangements of a short-circuit ring, wherein a distinction between the magnetic core and armature is not made. It is assumed that the FIGS. 3 and 4 represent a magnet armature; in the Fig. 3 the magnet armature has the reference numeral 30 and in the Fig. 4 the reference numeral 40.
  • a recess 32 is provided, in which a short-circuit ring 33 is inserted, so that the free edge of the short-circuit ring 33 practically forms the edge between the outer circumference of the magnet armature 30 and the end face 31.
  • this arrangement could also be arranged identically on a magnetic core.
  • the armature 40 is provided with a circumferential groove-shaped groove 42 arranged on its outer peripheral surface 41 into which a short-circuit ring 43 is inserted, the short-circuit ring 43 having an outer diameter corresponding to the outer diameter of the outer surface 41.
  • the short-circuit ring serves to keep the magnet armature open and, in addition, the contact point, because in the short-circuit ring a current flow is generated which is phase-shifted and thereby causes the magnetic force to not become zero at the zero crossing of the short-circuit current.
  • Fig. 5 in which one Force-current diagram is shown, with a curve F1, which increases with increasing current. Opposite to the direction of force F, the current over time t is shown as sinusoidal curve I 1 . If no shorting ring is provided, then the magnetic force will vary according to the curve F 2 , with the current moving between an upper, maximum value F o and a lower value F u due to the zero crossing, corresponding to the current increase as well as the zero crossing becomes zero. With a short-circuit ring, a force-current curve F 3 is generated in which a decrease in the force to zero is prevented due to the phase-shifted current generated in the ring is prevented.
  • the short-circuit ring can be arranged on the magnet armature, on the magnet core or on both.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Claims (4)

  1. Disjoncteur de puissance, à savoir disjoncteur de puissance principal sélectif, avec une piste conductrice principale comprenant un point de contact principal, une piste conductrice secondaire et un point de contact secondaire, avec un déclencheur électromagnétique (10) qui comprend un noyau magnétique (11) et un induit magnétique mobile (12) ainsi qu'un agencement de bobine (18) et une culasse magnétique (14), et avec des moyens pour maintenir ouvert le point de contact principal, le déclencheur électromagnétique (10) ouvrant le point de contact principal en cas de déclenchement et effectuant une commutation du courant dans la piste conductrice secondaire, caractérisé en ce qu'une bague de court-circuit (29, 33, 43) est montée sur l'induit magnétique (12) et/ou sur le noyau magnétique (11), dans laquelle peut être généré un flux de courant déphasé par rapport au courant de court-circuit, qui fait en sorte que la force magnétique, lors du passage par zéro du courant de court-circuit du point de contact principal, ne devienne pas nulle et qui sert ainsi à maintenir ouvert l'induit magnétique et en outre le point de contact principal jusqu'à ce que le flux de courant à travers le point de contact secondaire soit interrompu et que le flux de courant à travers le disjoncteur de puissance soit donc définitivement coupé.
  2. Disjoncteur de puissance selon la revendication 1, caractérisé en ce que la bague de court-circuit (29) est insérée dans une rainure annulaire (28) sur la surface frontale d'induit (23) de l'induit magnétique (12).
  3. Disjoncteur de puissance selon la revendication 2, caractérisé en ce que la rainure (28) est prévue à l'intérieur de la périphérie de la surface frontale d'induit (23) à distance de la périphérie.
  4. Disjoncteur de puissance selon la revendication 1, caractérisé en ce que la bague de court-circuit (43) est insérée dans une rainure annulaire (42) sur la surface périphérique de l'induit magnétique et/ou du noyau magnétique.
EP20070008639 2006-05-23 2007-04-27 Disjoncteur de puissance Active EP1860675B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610024249 DE102006024249B4 (de) 2006-05-23 2006-05-23 Leitungsschutzschalter

Publications (3)

Publication Number Publication Date
EP1860675A2 EP1860675A2 (fr) 2007-11-28
EP1860675A3 EP1860675A3 (fr) 2009-05-20
EP1860675B1 true EP1860675B1 (fr) 2015-04-22

Family

ID=38337823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070008639 Active EP1860675B1 (fr) 2006-05-23 2007-04-27 Disjoncteur de puissance

Country Status (2)

Country Link
EP (1) EP1860675B1 (fr)
DE (1) DE102006024249B4 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008021768B4 (de) 2007-04-30 2023-11-16 Abb Ag Elektromagnetischer Auslöser, Verfahren zur Herstellung eines elektromagnetischen Auslösers und Leitungsschutzschalter mit einem elektromagnetischen Auslöser
SI2330611T1 (sl) * 2009-12-04 2012-08-31 Hager Electro S A S Soc Par Actions Simplifiee Selektivni odklopnik
CN102243954A (zh) 2010-05-12 2011-11-16 Abb股份公司 安装开关设备
EP2750158B1 (fr) * 2012-12-27 2015-08-26 Hager Electro Sas Sous-ensemble magnétique et thermique pour disjoncteur sélectif

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1764522B2 (de) * 1968-06-19 1973-12-20 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltmagnet für ein elektromagnetisches Schaltgerät
CH614069A5 (fr) * 1977-03-31 1979-10-31 Weber Ag Fab Elektro
DE3833128A1 (de) * 1988-09-29 1990-04-05 Siemens Ag Elektromagnetischer ausloeser, insbesondere fuer leitungsschutzschalter
DE19809205A1 (de) * 1998-03-04 1999-04-15 Siemens Ag Magnetsystem mit Überstromauslösung
DE10244961B3 (de) * 2002-09-26 2004-02-12 Siemens Ag Selektiver Leitungsschutzschalter

Also Published As

Publication number Publication date
EP1860675A3 (fr) 2009-05-20
EP1860675A2 (fr) 2007-11-28
DE102006024249B4 (de) 2010-03-25
DE102006024249A1 (de) 2007-11-29

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