EP0621619B1 - Disjoncteur de ligne - Google Patents

Disjoncteur de ligne Download PDF

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Publication number
EP0621619B1
EP0621619B1 EP94104696A EP94104696A EP0621619B1 EP 0621619 B1 EP0621619 B1 EP 0621619B1 EP 94104696 A EP94104696 A EP 94104696A EP 94104696 A EP94104696 A EP 94104696A EP 0621619 B1 EP0621619 B1 EP 0621619B1
Authority
EP
European Patent Office
Prior art keywords
plunger
circuit breaker
breaker according
arm
disk
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
EP94104696A
Other languages
German (de)
English (en)
Other versions
EP0621619A1 (fr
Inventor
Peter Flohr
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.)
Heinrich Kopp GmbH and Co KG
Original Assignee
Heinrich Kopp GmbH and Co KG
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 Heinrich Kopp GmbH and Co KG filed Critical Heinrich Kopp GmbH and Co KG
Publication of EP0621619A1 publication Critical patent/EP0621619A1/fr
Application granted granted Critical
Publication of EP0621619B1 publication Critical patent/EP0621619B1/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
    • 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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
    • 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
    • H01H9/302—Means for extinguishing or preventing arc between current-carrying parts wherein arc-extinguishing gas is evolved from stationary parts
    • 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
    • H01H2071/407—Combined electrothermal and electromagnetic mechanisms the thermal element being heated by the coil of the electromagnetic mechanism

Definitions

  • the invention relates to a circuit breaker for protecting lines against thermal overload and short circuit.
  • circuit breakers usually have terminals, a contact and extinguishing system and a switch which can be released electromagnetically and thermoelectrically to open movable contacts in the overloaded case.
  • a contact and extinguishing system and a switch which can be released electromagnetically and thermoelectrically to open movable contacts in the overloaded case.
  • EP 0 144 799 discloses a compact switch lock design for this purpose, it provides a system for the area of thermal and magnetic tripping which needs to be improved with regard to the simplification of its functional design and its manufacturability with regard to highly mechanized production in large quantities. This applies in particular to the number of individual parts and the number of welding points required in the course of the cable routing.
  • miniature circuit breakers must have a high short-circuit breaking capacity, which experience has shown that conventional bimetal triggers are extremely stressful and reduce the service life.
  • miniature circuit breakers which are required in large numbers in each small distribution, must themselves have low self-consumption.
  • an overcurrent release for electrical protective switching devices which combines the protective function of short-circuit protection and protection against thermal stress in one unit, the thermal release of which is not current-carrying and whose power requirement (power loss) remains considerably below the known arrangements.
  • This previously known overcurrent release works with a thermal release by means of a bimetallic snap disk, which is held in a rotationally symmetrical support body that conducts heat well.
  • this document does not disclose a link between this overcurrent release and a switch lock and an arc-quenching plate package. for high switching capacities.
  • the invention has for its object to make a miniature circuit breaker with high short-circuit breaking capacity and long service life available, which can be manufactured in large quantities in a highly mechanized manner due to its simplified functional structure.
  • the circuit breaker according to the invention is advantageously designed with a high-performance arc quenching package and a switch lock, which can be released electromagnetically and thermoelectrically by means of a bimetallic snap element in order to open a contact device in the event of an overload, the bimetallic snap element being held in a heat-conducting support body which is also an electromagnetic one Exciter coil receives with a plunger, and wherein the plunger can be disengaged by the bimetallic snap element and / or electromagnetically, the functional link between the overload release and the opening of a movable contact of the contact device being effected in that the switching mechanism is rotatably mounted on a first arm of a first arm two-armed lever can be unlatched when the plunger is disengaged, the movable contact being able to be opened by the second arm of the lever and a baffle on the second arm for driving an L Arc column is formed during the shutdown in the direction of the quenching package to move the arc base to the quenching package.
  • a two-armed lever is accordingly provided in the invention, which combines several functions. It is used to transfer the release force to the kinematics to unlock the key switch, then as a striking lever Transmission of the impact energy to the movable contact of the contact device and ultimately in its capacity as a baffle for driving the plasma column.
  • the two-armed lever is rotatably mounted on the overcurrent release, in particular on the support body thereof, preferably on a bearing axis by means of which the support body can be fastened is. This also has manufacturing advantages.
  • the lever consists of an insulating material which emits gas under the action of an arc, preferably of plexiglass. This takes advantage of the favorable effect that gas is released under pressure under the influence of an arc in the millisecond range and quickly pushes the arc away to form a high-performance quenching package, in addition to enhancing the effect of the baffle provided.
  • a fixed tappet guide core and a displaceable tappet actuating anchor are arranged in the highly heat-conducting, preferably rotationally symmetrical support body in order to be able to carry out a tappet movement both through the bimetal snap element and under the action of the tappet actuation anchor.
  • the bimetallic snap element can be designed in any suitable and required form to adapt to the respective circumstances. With regard to size and mode of operation it is particularly favorable if the bimetallic snap element is designed as a disk with a central through-hole for the tappets, the tappet being shaped in the area of the disk as a result of the attack on the disk.
  • the snap disk itself is advantageously arranged in a bimetallic chamber centrally in front of the tappet guide core and bears against it with its convex side.
  • the design can also be such that the tappet actuation anchor is arranged axially between the tappet guide core and the snap disk held in a bimetallic chamber and that the tappet is guided in the tappet actuation anchor. This results in different constructive implementation options with which the respective spatial and functional requirements of the circuit breaker can be effectively and reliably taken into account.
  • the bimetal chamber is closed by means of a disk-shaped element made of an electrically insulating material, which has a passage and guide bore for the plunger and is particularly suitable for a rotationally symmetrical support body.
  • a receptacle for a conductor for fixed contact is preferably formed on the disk-shaped element, the conductor being connected to the excitation coil and the arc quenching package.
  • the bimetal chamber and the conductor for fixed contact are arranged on the same side.
  • a preferred embodiment of a circuit breaker 10 which has a narrowly constructed housing 11 made of an insulating plastic and on its rear side, in Fig. 1 and 2 below, suspension mounts 12 and 13 for a conventional mounting rail.
  • the housing 11 has an interior 14 and an upper section 15 with a connecting terminal 16 and a lower section 17 with a connecting terminal 18th
  • the connecting terminal 16 is connected to the movable contact 25 of the contact device 21 via a movable strand 24.
  • the complementary fixed contact 26 of the contact device 21 is formed as a section of an approximately 1.2 mm thick solid conductor 27 which extends from the overcurrent release 22 via the fixed contact 26 and a horn section 28 to the high-performance arc extinguishing package 23.
  • An arc-shaped arc guide plate 30 extends between an angled section 29 of the connecting terminal 16, to which the strand 24 is also fastened, and a rear region near the quenching package 23.
  • connection terminal 18 is connected to the overcurrent release 22 via a welding contact point 31.
  • the overcurrent release 22 has a rotationally symmetrical one that is a good heat conductor hollow cylindrical support body 32 with a portion on which a coil 33 is wound in tight contact.
  • One end of the coil 33 is connected to the connecting terminal 18 via the soldering point 31.
  • the other end of the coil 33 is guided to a soldering point 34 which is connected to the conductor 27 via a holding plate 35 in the front region of the support body 32.
  • the holding plate 35 is used to fasten the support body 32 in the interior 14 of the housing 11 by means of an axis 36, which simultaneously functions as an axis of rotation for a two-armed lever 37.
  • the two-armed lever 37 has a first arm 38 with a unlatching nose 39, a molded-in position section 40, which is overlapped by the holding plate 35, and a second arm 41, which is designed to strike a plunger 42 of the overcurrent release 22 within the position section 40.
  • the second arm 41 has a molded-on baffle 43 on its rear side (in FIGS. 1 and 2 on its underside) and a lug 44 through which the movable contact 25 can be opened, which is located on a first arm 45 of a two-armed contact lever 46 is located.
  • a movable plunger loading anchor 47 is arranged, which is biased by a spring 48, which is guided by the plunger 42, against a plunger guide core 49.
  • the tappet guide core 49 has a central bore 50 in which the tappet 42 is guided.
  • the tappet guide core 49 like the tappet actuating anchor 47, is constructed to be rotationally symmetrical.
  • the plunger guide core 49 is fastened in the hollow cylindrical interior of the support body 32.
  • a bimetal chamber 51 In front of the tappet guide core 49, ie to the left of this in FIGS. 1 and 2, a bimetal chamber 51 is formed, in which a bimetal snap disk 52 is formed by means of a disk-shaped one Element 53 is held in an enlarged portion of the support body 32.
  • the bimetallic disk 52 has a central bore, which only slightly exceeds the diameter of the plunger 42, in order to be able to act on a disk-shaped projection 54 of the plunger 42 for a thermally induced release or disengagement of the plunger 42.
  • the disc element 53 also has a passage opening 55 for the plunger 42, which protrudes up to its stop on the two-armed lever 37 in its molded-in position section 40.
  • the conductor 27 is fastened in a receptacle 56 of the disk-shaped element 53 and is conductively connected to the other end of the coil, the conductor 27 having a straight arc guide rail section 57 after the horn section 28, which extends parallel to the front side of the quenching package 23.
  • the unlatching lug 39 of the two-armed lever 37 is provided for engagement on an angled release lever 58, which forms a functional component of the switching lock 19.
  • the trigger lever 58 is mounted on an axle 59 fixed to the housing, which also forms the axis of rotation for the switching knob 20.
  • the switching lock 19 also includes the two-armed contact lever 46 with an elongated hole 61, which extends approximately transversely to the contact lever 46 and through which a housing-fixed axis 63 engages to guide the contact lever 46.
  • the contact lever 46 is biased in a clockwise direction on the housing 11 via a spring 67 and is connected in an articulated manner to an intermediate lever 69.
  • the nose-shaped free end 73 of the intermediate lever 69 engages in a latching manner with a stop 70 of the release lever 58 and has an elongated hole 74.
  • a bracket 75 engages with one end in the elongated hole 74 and with its other end in a bore 76 which is formed in a projection 77 of the switching knob 20 is formed.
  • the plunger 42 becomes electromagnetic or by means of the bimetal disk 52 from the position shown in FIG. 1 disengaged due to their snapping and hits the second arm 41 of the two-armed lever 37. This causes the movable contact 25 of the contact device 21 to be opened by means of the nose 44, which strikes the first arm 45 of the contact lever 46.
  • the material of the two-armed lever 37 which consists of an insulating material which emits gas under the action of an arc, gas is released intermittently, in particular from plexiglass. This advantageously presses the resulting arc to the quenching package 23, the baffle 43 of the lever 37 guiding the arc in the intended direction when it strikes.
  • the unlatching lug 39 of the two-armed lever 37 engages the release lever 58, as a result of which the latch is released with the intermediate lever 69 and the contact lever 45 is rotated clockwise under the pressure of the spring 67.
  • the bracket 75 is moved to the right via the intermediate lever 69 with the result that the switching knob 20 rotates counterclockwise into the switched-off position and the movable contact lever 46 is held in the open position.
  • the switching mechanism 19 thus reliably keeps the contact device 21 open.

Claims (13)

  1. Disjoncteur de ligne, comportant un paquet d'extinction d'arc à grande puissance (23) et un verrou de maintien (19) qui est décliquetable électromagnétiquement et thermoélectriquement au moyen d'un élément bimétallique à déclic (52) pour l'ouverture d'un système de contact (21) en cas de surcharge, l'élément bimétallique à déclic (52) étant contenu dans une enveloppe (32) bonne conductrice de la chaleur, qui reçoit en même temps une bobine d'excitation électromagnétique (33) et une tige-poussoir (42), la tige-poussoir (42) pouvant être sortie par l'élément bimétallique à déclic (52) et/ou électromagnétiquement, le verrou de maintien (19) pouvant être décliqueté, lorsque la tige-poussoir (42) est sortie, par l'intermédiaire d'un premier bras (38) d'un levier à deux bras (37) monté à rotation, le système de contact (21) pouvant être ouvert par le second bras (41) du levier (37), et une paroi de déviation (43) étant formée sur le second bras (41) pour renvoyer, en direction du paquet d'extinction (23), une colonne de plasma ou de gaz de décharge en arc qui est produite lors de l'ouverture du système de contact.
  2. Disjoncteur de ligne selon la revendication 1, caractérisé en ce que le levier à deux bras (37) est monté sur l'enveloppe (32) de manière à pouvoir tourner autour d'un axe de montage (36).
  3. Disjoncteur de ligne selon la revendication 1, caractérisé en ce que l'enveloppe (32) peut être fixée au moyen d'un axe de montage (36) sur lequel le levier à deux bras (37) est en même temps monté à rotation.
  4. Disjoncteur de ligne selon la revendication 2 ou 3, caractérisé en ce que le montage du levier à deux bras (37) est prévu du côté de l'enveloppe (32) qui est contigu au système de contact (21).
  5. Disjoncteur de ligne selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le levier à deux bras (37) est en une matière isolante qui dégage du gaz sous l'effet de l'arc électrique.
  6. Disjoncteur de ligne selon la revendication 5, caractérisé en ce que le levier à deux bras (37) est en Plexiglas.
  7. Disjoncteur de ligne selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'un noyau fixe (49) de guidage de la tige-poussoir et un noyau plongeur (47) d'actionnement de la tige-poussoir sont disposés dans l'enveloppe (32).
  8. Disjoncteur de ligne selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'élément bimétallique à déclic (52) est réalisé sous forme de disque avec une forure centrale de passage pour la tige-poussoir (42), la tige-poussoir (42) présentant, dans la région du disque, une saillie (54) d'accouplement au disque.
  9. Disjoncteur de ligne selon la revendication 8, caractérisé en ce que le disque à déclic (52) est disposé dans une chambre à élément bimétallique (51) en position centrale en avant du noyau (49) de guidage de la tige-poussoir et s'applique sur celui-ci par sa face convexe.
  10. Disjoncteur de ligne selon la revendication 8, caractérisé en ce que le noyau plongeur d'actionnement de la tige-poussoir est disposé axialement entre le noyau de guidage de la tige-poussoir et le disque à déclic contenu dans une chambre à élément bimétallique, et la tige-poussoir est guidée dans le noyau plongeur d'actionnement de la tige-poussoir.
  11. Disjoncteur de ligne selon la revendication 9 ou 10, caractérisé en ce que la chambre à élément bimétallique (51) est fermée au moyen d'un élément discoïdal (53) en une matière électriquement isolante, qui présente une forure de passage et de guidage (55) pour la tige-poussoir (42).
  12. Disjoncteur de ligne selon la revendication 11, caractérisé en ce qu'un logement (56) pour un conducteur (27) allant vers le contact fixe (26) est formé sur l'élément (53), le conducteur (27) étant connecté à la bobine d'excitation (33) et au paquet d'extinction (23).
  13. Disjoncteur de ligne selon la revendication 12, caractérisé en ce que la chambre à élément bimétallique (51) et le conducteur (27) vers le contact fixe (26) sont disposés du même côté de l'enveloppe (32).
EP94104696A 1993-04-22 1994-03-24 Disjoncteur de ligne Expired - Lifetime EP0621619B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4313207 1993-04-22
DE4313207A DE4313207A1 (de) 1993-04-22 1993-04-22 Leitungsschutzschalter

Publications (2)

Publication Number Publication Date
EP0621619A1 EP0621619A1 (fr) 1994-10-26
EP0621619B1 true EP0621619B1 (fr) 1996-12-11

Family

ID=6486123

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94104696A Expired - Lifetime EP0621619B1 (fr) 1993-04-22 1994-03-24 Disjoncteur de ligne

Country Status (6)

Country Link
US (1) US5499007A (fr)
EP (1) EP0621619B1 (fr)
AT (1) ATE146303T1 (fr)
DE (2) DE4313207A1 (fr)
ES (1) ES2095694T3 (fr)
SG (1) SG49274A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6087914A (en) 1996-12-19 2000-07-11 Siemens Energy & Automation, Inc. Circuit breaker combination thermal and magnetic trip actuator
DE19750875C1 (de) * 1997-11-18 1999-03-18 Hans Arnhold Überstromauslöser für Schutzschalter
FR2772980B1 (fr) * 1997-12-19 2000-01-21 Schneider Electric Sa Dispositif de declenchement magneto-thermique et disjoncteur equipe de ce dispositif
DE19847155A1 (de) * 1998-10-13 2000-04-20 Kopp Heinrich Ag Überstromauslöser
ES2147158B1 (es) * 1998-12-30 2001-03-01 Power Controls Iberica Sl Perfeccionamientos en los disyuntores automaticos de escape a tierra.
DE19914479A1 (de) * 1999-03-30 2000-10-05 Kopp Heinrich Ag Thermische Auslöseeinrichtung für Leitungsschutzschalter
DE102004055564B4 (de) 2004-11-18 2022-05-05 Abb Ag Elektrisches Installationsschaltgerät
DE102005043587B4 (de) * 2005-06-02 2009-04-02 Preh Gmbh Drehsteller mit programmierbarer Haptik
CN104143487B (zh) * 2013-07-17 2016-01-20 国家电网公司 火药气体驱动式断路器超高速操动机构
CN104134586B (zh) * 2013-07-17 2017-01-18 国家电网公司 火药气体驱动式超高速操动机构
DE102016203506B4 (de) * 2016-03-03 2021-10-07 Siemens Aktiengesellschaft Auslösevorrichtung und elektromechanisches Schutzschaltgerät
SI25414B (sl) * 2017-04-13 2021-04-30 Nela Razvojni Center Za Elektroindustrijo In Elektroniko, D.O.O. Varnostno električno stikalo z izboljšanim kontaktnim sklopom
CN107393772A (zh) * 2017-08-30 2017-11-24 黄银坤 一种断路器

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US537130A (en) * 1895-04-09 Elmer a
DE7508649U (de) * 1974-05-14 1975-08-28 Kopp H Hochleistungs-Selbstschalter
US3978300A (en) * 1975-02-11 1976-08-31 Westinghouse Electric Corporation Low-voltage circuit-breaker having small contact separation and small gap between cooperating parallel-arranged arcing-rails
DE3031549A1 (de) * 1980-08-21 1982-04-01 Heinrich Kopp Gmbh & Co Kg, 8756 Kahl Kontakt- und loescheinrichtung fuer elektrische schaltgeraete
EP0050719B1 (fr) * 1980-08-21 1985-11-13 Heinrich Kopp GmbH & Co. KG Dispositif de contact et d'extinction pour disjoncteurs miniatures électriques
DE3342469A1 (de) * 1983-11-24 1985-06-05 Bbc Brown Boveri & Cie Elektrischer schalter
DE3347097A1 (de) * 1983-12-27 1985-07-04 Lindner Gmbh, Fabrik Elektrischer Lampen Und Apparate, 8600 Bamberg Schutzschalter
CH670726A5 (en) * 1986-06-16 1989-06-30 Maier & Cie C Circuit breaker release system - with thermal and magnetic trip acting on plastic trigger pin
DE3637275C1 (en) * 1986-11-03 1988-05-05 Flohr Peter Overcurrent trip device for protection switching apparatuses
FR2614467A1 (fr) * 1987-04-21 1988-10-28 Telemecanique Electrique Appareil interrupteur de protection a mecanisme de declenchement simplifie
DE3915127C1 (fr) * 1989-05-09 1990-09-06 Flohr, Peter, Dipl.-Ing., 7790 Messkirch, De
DE3917326A1 (de) * 1989-05-27 1990-11-29 Licentia Gmbh Schaltmechanismus fuer einen leitungsschutzschalter
FR2674679B1 (fr) * 1991-03-29 1994-06-17 Hager Electro Mecanisme de serrure pour disjoncteur.

Also Published As

Publication number Publication date
ATE146303T1 (de) 1996-12-15
DE4313207A1 (de) 1994-10-27
EP0621619A1 (fr) 1994-10-26
SG49274A1 (en) 1998-05-18
DE59401228D1 (de) 1997-01-23
US5499007A (en) 1996-03-12
ES2095694T3 (es) 1997-02-16

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