EP0444283B1 - Disjoncteur de protection de canalisation avec un appareil déclencheur - Google Patents

Disjoncteur de protection de canalisation avec un appareil déclencheur Download PDF

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Publication number
EP0444283B1
EP0444283B1 EP90124549A EP90124549A EP0444283B1 EP 0444283 B1 EP0444283 B1 EP 0444283B1 EP 90124549 A EP90124549 A EP 90124549A EP 90124549 A EP90124549 A EP 90124549A EP 0444283 B1 EP0444283 B1 EP 0444283B1
Authority
EP
European Patent Office
Prior art keywords
magnet yoke
switch according
excitation winding
contact point
contact
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.)
Expired - Lifetime
Application number
EP90124549A
Other languages
German (de)
English (en)
Other versions
EP0444283A1 (fr
Inventor
Werner Dipl.-Ing. Ostermann
Jürgen Dipl.-Ing. Orzechowski
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.)
AEG Niederspannungstechnik GmbH and Co KG
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0444283A1 publication Critical patent/EP0444283A1/fr
Application granted granted Critical
Publication of EP0444283B1 publication Critical patent/EP0444283B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01H73/18—Means for extinguishing or suppressing arc
    • 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
    • H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H2071/249—Electromagnetic mechanisms with part of the magnetic circuit being in the normal current path in the circuit breaker, e.g. yoke, fixed contact and arc-runner are made out of one single conductive element
    • 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
    • H01H71/121—Protection of 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
    • H01H71/24—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
    • 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
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns

Definitions

  • the invention relates to a line circuit breaker with an electromagnetic trigger element designed as an impact armature system, the excitation winding of which is enclosed by a frame-shaped magnetic yoke formed from a ferromagnetic sheet-metal strip, which in turn has a horn-like fixed contact point arranged in one piece and merging into an arc running track, and with an arcing chamber located below the trigger element with quenching plates arranged parallel to the impact anchor system and with a movable contact device oriented perpendicular to it, to the side of the triggering element and in front of the end face of the quenching plate package.
  • Such a switching device is known from DE 30 31 549 A1.
  • a frame-shaped closed magnetic yoke completely surrounds the excitation winding of the release element.
  • the fixed contact piece running out into an arc guide plate is connected to the magnetic yoke in that these parts are punched and folded in one piece from a refined sheet steel strip.
  • the legs overlap on the side of the fixed contact piece and are additionally riveted.
  • a disadvantage of this magnetic release is the considerable additional expenditure in terms of quantity of relatively expensive material as well as an additional mechanical work process.
  • the invention has for its object to simplify the construction of the magnetic yoke of the tripping device in a line circuit breaker of the type mentioned and to save material and at the same time to give it in the adjacent quenching chamber and contact area of the switch an optimal design for the arc to run off the contact point quickly can and a commutation of the arc on the fixed contact side can be excluded.
  • the invention is advantageous in that an inexpensive arc quenching device can be produced with little material, which also ensures a high running speed of the switching arc in the prechamber area.
  • the arc is driven safely and quickly, particularly in the critical area in front of the quenching plates by the fixed contact piece and the arc guide rail, both of which are predominantly made of ferromagnetic material. Due to the special arrangement, the magnetic flux of the short-circuit current surrounding the arc guide rails is increased in the area of the prechamber space, and the very effective blowing that arises here ensures rapid arc discharge from the contact point. Furthermore, the proposed measures significantly reduce the tendency to re-ignition of the switch.
  • the narrow circuit breaker shown has a housing (1) formed from two housing shells (1a, 1b) and held together by a plurality of rivet bolts (1c), which accommodates a switching mechanism (2) which is only indicated in the upper part.
  • An electromagnetic release element (3) is arranged in the central area of the housing, while the base area located underneath is predominantly designed as an extinguishing chamber (4).
  • This is largely filled with quenching plates (4a) arranged parallel to the bottom surface of the switch and connected to one another in a packet-like manner at a distance, and delimited on their narrow sides by arc guiding rails (5f) or (6) flanking the quenching plates on both sides.
  • the upper arc runner (5f) is part of a magnetic yoke (5) which surrounds an excitation winding (3a) in a frame shape as an iron yoke. Iron cores of an impact anchor system are in turn within the field winding (3b) arranged, which in the event of a short-circuit current gives off the unlatching stroke of the electromagnetic release member on the plunger (3c).
  • the magnetic yoke (5) is made in one piece from a sheet metal strip and has a U-leg area with a free leg (5a), a connecting yoke (5b) and a contact-side leg (5c) above and on both end faces of the excitation winding (3a) whose leg end is seamlessly formed an ear-shaped protruding fixed contact point (5d) with a contact horn (5e) bent backwards, which ultimately merges into the upper arc running rail (5f).
  • the magnetic yoke with its sections (5a, 5b, 5c, 5f) forms an almost iron-closed rectangular frame around the field winding (3a).
  • the end of the contact-side leg (5c) in the transition to the fixed contact point (5d) and the contact horn (5c), which runs obliquely in front of the front contour of the upper quenching plates, are constricted almost flush with the corner in the transition to the arc guide rail (5f), while at the opposite corner of the frame the end of the free leg (5a) strives at right angles to the free end of the arc runner (5f), but without touching it.
  • a partition wall (not shown) in the housing between the excitation winding and the arc runner (5f) ensures that, in the event of a short-circuit current under the influence of the magnetic forces, no conductive connection between the leg (5a) and the arc runner (5f) can occur. This is essential insofar as a reversal of the current direction occurs when touching this corner of the frame and thus magnetic blowing would be impeded.
  • the excitation coil (3a) is connected on the one hand to an output terminal (7) and on the other hand to the contact-side leg (5c), preferably by a welding process, so that it lies in series with the fixed contact point (5d), which is in particular due to a soldered-on contact plate (5d ′) is marked.
  • a movable contact lever (8) which is only shown schematically, works on this and is connected in series with an input terminal (10) via a flexible line (8a), a thermal release (9) and a connecting line (10a).
  • the thermal release (9) in the form of a bimetal is connected in a manner not shown to one end of the arc guide rail (6) and is adjustable there.
  • the two arc guide rails (5f, 6) are provided with a longitudinally running, transversely profiled bead (5f ', 6') (Fig. 1, Fig. 2) which protrude approximately in the direction of the quenching plates (4) the center of each arc runner, d. H. are impressed approximately in the pivoting plane of the movable contact lever (8).
  • the bead on the upper arc rail (5f) begins directly below the contact plate (5d ') and preferably ends flush with it.
  • the trigger member (3) in the area below the excitation winding (3a) is provided with a separating cut or longitudinal slot (5g) in the magnetic yoke, so that in addition to the opposite legs (5a, 5b , 5c) of the yoke, which is kept narrower and only in the switch center plane, there is a longitudinal web (5h) on one side, which is angled directly at the end of the contact-side leg (5c) in the direction of the free leg (5a), leaving out the contact point area and directly at the end.
  • the actual arc running rail (5f) is guided approximately parallel at a distance and, in addition to the smooth-surface design shown, can also be provided with a cross-profiled bead according to FIGS. 1 and 2.
  • a further modification of the subject matter of the invention, in particular at high currents, is the use of a composite material as the starting material for the Magnetic yoke (5).
  • the sheet metal strip made of an iron alloy is provided with a plating (5 ') made of a highly conductive material, preferably copper, which can have a maximum of half the strip thickness (Fig. 5).
  • the plated outside of the sheet metal strip with a total thickness of about 1 mm is turned away from the excitation winding (3a) and is thus in a highly conductive connection with the contact point (5d) or (5d ').
  • a connecting lug (5i) is preferably bent inwards on the contact-side leg of the magnetic yoke, on which one end of the winding has contact contact with the plated material side. This results in a low resistance between the field winding and the contact point, which is advantageous at higher nominal currents.
  • a similar advantageous effect results in the embodiment according to FIG. 6, in which a bridge part (5k) made of a highly conductive material is arranged between the field winding and the contact point.
  • the bridge part follows the outer contour of the magnetic yoke in the ear-shaped projecting contact area (5d) and lies there tightly on the outside, one end being connected to the excitation winding (3a), while the other end can be designed directly as a contact point.
  • This can be achieved, for example, by applying silver (5k ') on the copper base material of the bridge part, so that an additional contact plate is not required.
  • the function of the separate iron-closed magnetic yoke in the sense described at the beginning is also fully retained in this version.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Push-Button Switches (AREA)
  • Burglar Alarm Systems (AREA)
  • Electronic Switches (AREA)
  • Toys (AREA)
  • Electromagnets (AREA)

Claims (10)

  1. Disjoncteur de protection de canalisation ayant un organe de déclenchement (3) électromagnétique exécuté comme un système à armature battante (3b), dont l'enroulement d'excitation (3a) est entouré par une culasse magnétique (5), en forme de cadre, formée à partir d'une bande de tôle ferromagnétique, laquelle, de son côté, présente un emplacement de contact fixe (5d) du type corne, agencé d'une seule pièce, se convertissant en un rail d'écoulement d'arc électrique (5f), et ayant une chambre d'extinction (4) se trouvant au-dessous de l'organe de déclenchement avec des tôles d'extinction (4a) agencées parallèlement au système à armature battante, ainsi qu'ayant un agencement de contact (8) mobile, orienté perpendiculairement par rapport à celles-ci, agencé latéralement par rapport à l'organe de déclenchement et devant le côté frontal du paquet de tôles d'extinction, caractérisé en ce que la culasse magnétique (5), en partant d'une zone à branches de U (5a, 5b, 5c) se trouvant au-dessous et aux deux faces frontales de l'enroulement d'excitation (3a), à une extrémité de branche, est constituée avec corne de contact (5e) voisine de l'emplacement de contact fixe (5d) saillant, en forme d'oeil, agencée sans transition, et est pliée, au moyen du rail d'écoulement d'arc électrique (5f) s'y raccordant, courbé vers l'arrière, en une fermeture en retour en fer fermée, en forme de cadre, entourant l'enroulement d'excitation (3a).
  2. Interrupteur selon la revendication 1, caractérisé en ce que l'extrémité de branche (5a) libre de la culasse magnétique (5) détournée de l'emplacement de contact fixe (5d) et l'extrémité libre du rail d'écoulement d'arc électrique (5f) sont constituées, à angle droit, en venant en butée l'une sur l'autre sans venue en contact mutuelle, comme coin de cadre.
  3. Interrupteur selon la revendication 1 et la revendication 2, caractérisé en ce que l'extrémité libre du rail d'écoulement d'arc électrique (5f) est rallongée au-delà de la branche (5a) libre de la culasse magnétique (5) et en restant libre à distance de cette extrémité de branche.
  4. Interrupteur selon les revendications 1 à 3, caractérisé en ce que le rail d'écoulement d'arc électrique (5f) et la corne de contact (5e) sont pourvus, en direction longitudinale, d'une moulure (5f′) profilée transversalement.
  5. Interrupteur selon la revendication 4, caractérisé en ce que la moulure (5f′) est agencée à peu près dans le plan de basculement de l'agencement de contact (8) mobile et est emboutie en faisant saillie en direction des tôles d'extinction (4a).
  6. Interrupteur selon la revendication 4 ou la revendication 5, caractérisé en ce que la moulure (5f′) est constituée directement au-dessous d'une plaquette de contact (5d′) de l'emplacement de contact fixe, en commençant avec la surface côté contact de celui-ci, à même hauteur que celle-ci.
  7. Interrupteur selon une des revendications 1 à 6, caractérisé en ce qu'aux rails d'écoulement d'arc électrique (5f), au moyen d'une fente de séparation (5g), en direction axiale de l'enroulement d'excitation (3a) , une barrette longitudinale (5h) s'étendant à peu près parallèlement est formée, qui est courbée, en partant de la branche (5c) côté contact de la culasse magnétique (5) en forme de U, à l'exception de la partie de contact fixe (5d) et de la corne d'arc électrique (5e), directement, comme cadre de fer fermé, autour de l'enroulement d'excitation (3a).
  8. Interrupteur selon une des revendications 1 à 7, caractérisé en ce que la culasse magnétique (5) est réalisée à partir d'une bande de tôle ferromagnétique, ayant un placage (5′) d'un côté en une matière première bonne conductrice, le côté de matière première ferromagnétique étant adjacent à l'enroulement d'excitation (3a).
  9. Interrupteur selon une des revendications 1 à 8, caractérisé en ce qu'à la branche (5c) côté contact de la culasse magnétique (5), est constituée une languette de raccordement (5i) courbée en direction du rail d'écoulement d'arc électrique (5f), pour la liaison électriquement conductrice, directe, du placage (5′) avec le fil métallique de l'enroulement d'excitation (3a).
  10. Interrupteur selon une des revendications 1 à 8, caractérisé en ce que l'emplacement de contact fixe (5b) et l'extrémité de l'enroulement d'excitation (3a) adjacente à celui-ci sont reliés avec conduction au moyen d'une partie de pontage (5k) reposant sur la matière première ferromagnétique de la culasse magnétique (5).
EP90124549A 1990-02-24 1990-12-18 Disjoncteur de protection de canalisation avec un appareil déclencheur Expired - Lifetime EP0444283B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9002197U 1990-02-24
DE9002197U DE9002197U1 (fr) 1990-02-24 1990-02-24

Publications (2)

Publication Number Publication Date
EP0444283A1 EP0444283A1 (fr) 1991-09-04
EP0444283B1 true EP0444283B1 (fr) 1994-10-26

Family

ID=6851348

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90124549A Expired - Lifetime EP0444283B1 (fr) 1990-02-24 1990-12-18 Disjoncteur de protection de canalisation avec un appareil déclencheur

Country Status (7)

Country Link
EP (1) EP0444283B1 (fr)
AT (1) ATE113409T1 (fr)
DE (2) DE9002197U1 (fr)
ES (1) ES2063236T3 (fr)
HK (1) HK34795A (fr)
NO (1) NO180607C (fr)
PL (1) PL164963B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10126854A1 (de) * 2001-06-01 2002-12-19 Siemens Ag Magnetjoch eines elektromagnetischen Auslösers
CN106024541A (zh) * 2016-07-23 2016-10-12 上海路美思电气有限公司 一种智能漏电保护器

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH685524A5 (de) * 1993-03-19 1995-07-31 Maier & Cie C Leitungsschutzschalter.
DE4309197A1 (de) * 1993-03-22 1994-09-29 Maier & Cie C Leitungsschutzschalter
CN1037794C (zh) * 1994-02-10 1998-03-18 松下电工株式会社 电流断路器
FR2806522B1 (fr) * 2000-03-14 2003-09-19 Schneider Electric Ind Sa Dispositif de declenchement magnetique notamment pour disjoncteur, et appareil de protection electrique comportant un tel dispositif
AT412926B (de) * 2001-03-20 2005-08-25 Moeller Gebaeudeautomation Kg Joch für ein magnetsystem einer kurzschlussauslöseeinrichtung
US6417474B1 (en) * 2001-05-15 2002-07-09 Eaton Corporation Electrical switching apparatus having an arc runner with an elongated raised ridge
WO2007087761A1 (fr) * 2006-01-31 2007-08-09 Siemens Aktiengesellschaft Interrupteur de puissance
AT509279A1 (de) * 2008-07-31 2011-07-15 Moeller Gebaeudeautomation Gmbh Schaltgerät
JP2014235982A (ja) * 2013-06-05 2014-12-15 パナソニック株式会社 回路遮断器
CN105513860A (zh) * 2016-01-18 2016-04-20 刘天保 一种用于高压电力系统的电子电磁式智能开关

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10126854A1 (de) * 2001-06-01 2002-12-19 Siemens Ag Magnetjoch eines elektromagnetischen Auslösers
CN106024541A (zh) * 2016-07-23 2016-10-12 上海路美思电气有限公司 一种智能漏电保护器
CN106024541B (zh) * 2016-07-23 2018-11-20 上海路美思电气有限公司 一种智能漏电保护器

Also Published As

Publication number Publication date
NO910709D0 (no) 1991-02-22
PL164963B1 (pl) 1994-10-31
NO180607B (no) 1997-02-03
ATE113409T1 (de) 1994-11-15
NO180607C (no) 1997-05-14
DE59007565D1 (de) 1994-12-01
EP0444283A1 (fr) 1991-09-04
ES2063236T3 (es) 1995-01-01
HK34795A (en) 1995-03-17
NO910709L (no) 1991-08-26
DE9002197U1 (fr) 1991-06-27
PL289163A1 (en) 1991-08-26

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