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EP0315093A2 - Contacteur d'installation électrique - Google Patents

Contacteur d'installation électrique Download PDF

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Publication number
EP0315093A2
EP0315093A2 EP88118064A EP88118064A EP0315093A2 EP 0315093 A2 EP0315093 A2 EP 0315093A2 EP 88118064 A EP88118064 A EP 88118064A EP 88118064 A EP88118064 A EP 88118064A EP 0315093 A2 EP0315093 A2 EP 0315093A2
Authority
EP
European Patent Office
Prior art keywords
housing
contact
circuit breaker
magnet armature
lever
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Withdrawn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
EP88118064A
Other languages
German (de)
English (en)
Other versions
EP0315093A3 (fr
Inventor
Peter Dr. Hoyer
Georgi Cwetanski
Jochen Grüner
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
ABB AB
Original Assignee
Asea Brown Boveri AG Germany
Asea Brown Boveri AB
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 Asea Brown Boveri AG Germany, Asea Brown Boveri AB filed Critical Asea Brown Boveri AG Germany
Publication of EP0315093A2 publication Critical patent/EP0315093A2/fr
Publication of EP0315093A3 publication Critical patent/EP0315093A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device
    • H01H89/08—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device with both devices using the same contact pair

Definitions

  • the invention relates to an electrical circuit breaker with the number of phases to be switched off corresponding double contact points, each with two fixed contact pieces and one each bridging, in a contact carrier accommodated contact bridge, with each contact point assigned arc extinguishing devices, each with a contact armature system associated with each contact bridge, via a transmission lever to each a contact carrier only acts to open it, and with a key switch only for permanent opening of all contact points, on which the impact anchor systems and a thermal release act.
  • Circuit breakers which offer protection against short circuits and overcurrents, have recently also been used; A contactor has also been provided for switching the motor on and off.
  • This switching device with three contact points which belongs to the type mentioned at the outset, has two electromagnet systems in one housing, one of which is an impact magnet system, which in the event of a short circuit, each contact point individually by striking the respective movable contact piece or its contact carrier and additionally via a switch lock opens all contact points, whereas the other electromagnet system has a contactor like a magnetic core and a magnet armature, which magnet armature acts on all contact piece carriers and thus on all contacts to their opening.
  • the device thus includes a current-limiting circuit breaker function, a contactor function with manual and remote control options, as well as a magnetic-thermal overcurrent relay function against overloads and overcurrents. All of these functions are implemented in components which are "integrally" housed in a housing.
  • the object of the invention is to provide an electrical circuit breaker of the type mentioned, which is constructed more cost-effectively and is easier to assemble.
  • an electrical switching device which is an independent basic device in which the contact points, the individual anchoring systems, the thermobimetals and the switching mechanism are located and which thus corresponds to or corresponds to a circuit breaker, and an additional module which is also independent of the basic device, in which an electromagnet system is housed, with which the "protective function" can practically be assigned to the basic device.
  • All actuating components act in the "opening" direction of the contact point, the contact points each being under the pressure of a spring which acts on the contact points in the "closing" direction, and the additional, add-on module has the advantage that it does not have the key switch, but acts directly on the contact points.
  • the configuration according to the invention has the further advantage that the entire device can be manufactured both in the factory and by the user on site, in which the user only has to add the module to the side of the basic device. It is no longer necessary to keep circuit breakers, contactors and a combined "integral" device in stock, but only one circuit breaker and the module.
  • the lever is a double arm lever which is mounted in the housing and one arm of which is coupled to the magnet armature and the other arm of which can be coupled to an actuating bridge element connected to all contact carriers.
  • the double-arm lever can be mounted on a fixed pin in the housing or on an edge of the recess from which it protrudes from the housing.
  • the transmission arrangement has a shaft as a transmission element which is mounted in the housing and on which a lever which projects with the magnet armature and another lever which projects out of the housing and into the Circuit breaker is insertable, there cooperates with the transmission levers so that the transmission element acts on the transmission lever for actuating the contact bridges only in the opening direction.
  • the transmission element designed as a shaft journal can be coupled to the axis of rotation of the transmission lever and is provided with an arm which is connected to the magnet armature, in such a way that the shaft journal only supports the bearing axis of the transmission lever in the opening direction of the Contact bridges operated.
  • a switch coupled to its switch lock, which is switched off when the basic device is switched off with the switch lock, so that the supply line to the coil of the electromagnetic system is switched off.
  • This switch can then be switched on again by means of a reset button according to the characterizing parts of claim 8.
  • the basic device which has the reference number 10 in its entirety, is a circuit breaker serving as a motor protection switch, which is accommodated in a housing 11 made of plastic.
  • the housing 11 has an upper housing part 12 and a housing base 13 with a housing base 14.
  • the contour of the housing 11 is adapted approximately to the contour of a circuit breaker parallel to the connecting line of associated clamping screws.
  • the installation switching device has two contact points 15 and 16 per pole and one arc extinguishing device 17 and 18 assigned to contact points 15 and 16, the arc gases of which can be blown off via an outlet opening 19 and 20.
  • the contact points 15 and 16 comprise two fixed contacts 21 and 22, which are bridged with the contact bridge 23 by two movable contact pieces 24 and 25 attached to a contact bridge 23.
  • the contact bridge is inserted in a manner known per se in a contact bridge support 26 made of plastic and is constantly under the force of a contact pressure spring 27 which tries to press all contact pieces in the switched-on position.
  • the two fixed contact pieces 21 and 22 are each attached to an arc guide rail 28 and 29, which arc guide rails 28 and 29 on the one hand run parallel to the arc quenching plate packet 17 and 18 and on the other hand have an area 30 and 31 which are parallel to the direction of movement of the two contact pieces 24 and 25 runs.
  • the coil 32 of an electromagnetic impact anchor system 33 is connected to the section 30 via a line 31, said coil 32 comprising a yoke 34, a magnetic core 35 and has an impact anchor 36; the other end of the coil 32 is connected to a clamping part 37 of a connecting terminal 38, which is accessible via a first opening 39 in the housing 11 for a screwdriver and via a second opening 40, which runs transversely thereto, for connecting a connecting wire.
  • a lever 41 is articulated on a pivot 42, which lever 41 lies in the path of movement of the impact anchor 36 and engages with its free end in a recess 43 in the contact carrier 26. If the impact anchor 36 is actuated in the direction of arrow A due to a short circuit, then the lower end of the impact anchor 36 strikes the lever 41 and presses the contact piece carrier 26 and thus the two movable contact pieces 24 and 25 downward into the open position.
  • the upper end of the impact anchor 36 is connected to a switch lock 44 via a line of action 45, which switch lock causes the contact points 15 and 16 to remain open. In the event of a short circuit, the contact points are suddenly opened by the impact anchor 36, whereas, due to a time delay normally associated with the mechanics, the switching lock 44 opens somewhat later and keeps the contact points 15 and 16 open.
  • thermobimetal adjoins the area 31 via a strand 46, which is wound around a thermal bimetal 48, which acts on the switching lock 44 via a pin 49 and also permanently opens due to the heating of the switching lock 44.
  • the "other end" of the thermobimetal is connected via a connecting line 50 to a second terminal 51, which is accessible via a hole 52 corresponding to the opening 39 to a screwdriver and via a hole 53 corresponding to the opening 40 to a line connection.
  • the key switch is located in the middle and can be operated manually by a push button 54.
  • each double contact point is assigned an impact anchor system and a bimetallic arrangement.
  • the basic device 10 can be seen partly in section, namely transversely to the plane of the drawing in accordance with FIG. 1, and three adjacent poles 60, 61 and 62 can be seen, and a section through the pole 60 can be seen in FIG.
  • the individual poles have the same structure; they each have a contact carrier 26, 63 and 64 with their recesses 43, 65 and 66, in which the lever 41 or corresponding lever engage.
  • the three poles 60, 61 and 62 are separated from one another by intermediate walls 67 and 68 and an actuating bridge 69 is arranged above the contact carriers 26, 63 and 64 and has a recess 70 into which the free, spherically shaped end 71 of a double arm lever 72 engages .
  • the switching device described above (without said double arm lever) is an independently usable device that takes over the protective function in the event of a short-circuit or overcurrent.
  • a housing 80 which carries a magnetic core 82 of an electromagnet system 83 on a support plate 81.
  • this electromagnet system 83 therefore has the magnetic core and a magnet armature 84 cooperating therewith, both of which, in a manner known per se, have approximately the shape of an E-cut core.
  • a coil 85 is arranged around the middle leg of both the magnetic core 82 and the magnet armature 84 and is wound on a coil former 86 known per se.
  • a magnet armature carrier 87 is attached, which has an extension 88, which extends from the upper end wall 89 of the housing 80 protrudes and carries a nose 90 against which a compression spring 91 is supported; the other end of which is supported against a spring holder 92, so that the extension 88 and thus the magnet armature 84 are continuously acted upon in the direction of lifting off from the magnet core.
  • the other arm of the double lever 72 is articulated on the magnet armature carrier 87 via a pin 93 in an elongated hole 94; the double arm lever 72 is supported in a bearing shaft 95 inside the housing 80.
  • a switching element 98 being arranged in the feed line 97, which is switched via an action line 99 from the actuating button 54 and thus from the switching mechanism when the contact points of the individual poles are opened, and moreover also switched on via a reset button 100, so that the electromagnetic system 83 can be switched on again or switched to ready for operation.
  • the switch works as follows:
  • the switching device 10 of FIG. 1 acts like a motor protection switch which contains protection and manual switching functions.
  • the impact armature 36 is actuated so that it actuates the contact carrier 26 or the contact carriers 63 and 64 via the lever 41 or the corresponding levers of the other poles, as a result of which the contact points 15 / 16 can be opened.
  • the switch lock 44 is opened over the line of action 45 by the impact anchor 36, so that the position shown in FIG. 1 is final and permanent.
  • the electromagnet 83 does not remain energized and in this way the spring 91 pushes the magnet armature upwards and via the double arm lever 72 and the spherical extension 71 in the pan 70 are the contact points 15 and 16 of the individual poles 60, 61 and 62 opened.
  • the electromagnet system 83 is energized, the magnet armature 84 is attracted and the double arm lever 71 pivots clockwise, whereby the force of the compression springs 27 is released and the contact points 15 and 16 are closed.
  • the switch 98 is also opened at the same time, as a result of which the magnet armature can fall off and the contact points 15 and 16 likewise open via the double arm lever 72.
  • the reset button 100 By actuating the reset button 100, the armature cannot be reset, but the current flow to the electromagnet system is closed again.
  • FIG. 4 A further embodiment of the invention is shown in section in FIG.
  • the housing 80 is constructed in the same way as that that in FIG is shown.
  • a double arm lever like that of FIG. 4 is articulated on the magnet armature 84.
  • This double-arm lever has a shaft 100, at one end of which a lever 101 and at the other end of which a lever 102 is attached, both of which project in the opposite direction and lie in the same plane.
  • the lever 101 has a thickening 103 in which there is an elongated hole 104 which is coupled to a pin 105 on the magnet armature which can slide in the elongated hole 104.
  • the magnet armature has an attachment 87 with a recess 106 into which the lever 101 and, moreover, also one arm of the double arm lever 27 (see FIG. 2) engage.
  • the shaft 100 is mounted in the housing parallel to the longitudinal extension of the laminated sheet-metal cores of the magnetic core 82 or 83 and the magnet armature 84 and the other arm 102 protrudes from the housing, specifically as a transmission element which passes through an opening 107 in the housing of the circuit breaker .
  • Figure 5 protrudes and is coupled to all transmission levers 41 in such a way that the transmission element can only act on the transmission lever in the switch-off direction.
  • a transmission element can protrude from the housing 80, which is directly coupled to the shaft 42 in such a way that it actuates the shaft 42 and thus the transmission lever 41 only in the switch-off direction. It is a kind of one-way clutch.
  • a motor protection switch can be used to form a motor starter with a contactor-type magnetic drive, so that units which have already been prefabricated and known and used are merely can be supplemented with an additional module to a device with a higher function, namely a contactor with motor protection, and this combination device can be manufactured and retrofitted not only at the factory but also by a customer.

Landscapes

  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP19880118064 1987-11-05 1988-10-29 Contacteur d'installation électrique Withdrawn EP0315093A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873737539 DE3737539A1 (de) 1987-11-05 1987-11-05 Elektrisches installationsschaltgeraet
DE3737539 1987-11-05

Publications (2)

Publication Number Publication Date
EP0315093A2 true EP0315093A2 (fr) 1989-05-10
EP0315093A3 EP0315093A3 (fr) 1991-03-06

Family

ID=6339831

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880118064 Withdrawn EP0315093A3 (fr) 1987-11-05 1988-10-29 Contacteur d'installation électrique

Country Status (2)

Country Link
EP (1) EP0315093A3 (fr)
DE (1) DE3737539A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4123563A1 (de) * 1990-07-16 1992-01-23 Terasaki Denki Sangyo Kk Leistungsschalter mit zwangsweiser kontakttrennung und selbsthaltung im kurzschlussfall
EP0568881A1 (fr) * 1992-05-07 1993-11-10 Siemens Aktiengesellschaft Disjoncteur de puissance avec verrou de maintient
EP0901140A3 (fr) * 1997-09-03 2000-01-12 ABBPATENT GmbH Dispositif d'actionnement électromagnétique pour un commutateur
DE19845800B4 (de) * 1998-09-30 2006-01-05 Siemens Ag Niederspannungs-Leistungsschalter mit einer Einrichtung zur Rückstellung eines Haftmagnetauslösers
WO2011003751A1 (fr) * 2009-07-09 2011-01-13 Siemens Aktiengesellschaft Commutateur de puissance avec unité intégrée de déclenchement et d'entraînement
CN108400065A (zh) * 2018-05-15 2018-08-14 苏州洪恩流体科技有限公司 一种机械应急强制启动装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3824546A1 (de) * 1988-07-20 1990-01-25 Asea Brown Boveri Elektrischer leistungsschalter
JP2812810B2 (ja) * 1990-02-14 1998-10-22 三菱電機株式会社 開閉器
DE9213142U1 (de) * 1992-09-25 1993-02-25 Siemens AG, 80333 München Elektromagnetisch betätigbares Schaltgerät
DE4322935C2 (de) * 1993-07-09 1995-10-26 Kloeckner Moeller Gmbh Kontaktsystem für ein elektromagnetisches Schaltgerät mit Schnellauslöser
DE102015117324A1 (de) 2015-10-12 2017-04-13 Abb Schweiz Ag Schaltgerät mit einem Kontaktsystem
DE102017123202B4 (de) 2017-10-06 2019-08-14 Abb Schweiz Ag Schaltgerät mit einem Klappanker- Magnetsystem
DE102017123203B4 (de) 2017-10-06 2021-03-18 Abb Schweiz Ag Schaltgerät mit Schaltmechanismus und elektromagnetischem Aktor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR906102A (fr) * 1943-08-21 1945-12-24 Voigt & Haeffner Ag Appareil de commutation électrique, et en particulier relais
FR934239A (fr) * 1946-09-16 1948-05-14 Bresson Ets Télérupteur à contacts secs
US3308404A (en) * 1964-02-10 1967-03-07 Fujita Teizo Electric switch responsive to predetermined or abnormal current condition
FR1470393A (fr) * 1966-01-12 1967-02-24 Telemecanique Electrique Mécanisme pour électro-aimant, en particulier pour contacteur électromagnétique
DE1956092A1 (de) * 1968-11-19 1970-07-09 Dresden Elektroschaltgeraete Ankerrueckstelleinrichtung fuer elektromagnetisch betaetigte Schaltgeraete
CH570048A5 (fr) * 1973-05-14 1975-11-28 Siemens Ag
US4025883A (en) * 1975-11-11 1977-05-24 Westinghouse Electric Corporation Modular integral motor controller
US4625190A (en) * 1985-03-04 1986-11-25 Westinghouse Electric Corp. Remotely controlled solenoid operated circuit breaker

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4123563A1 (de) * 1990-07-16 1992-01-23 Terasaki Denki Sangyo Kk Leistungsschalter mit zwangsweiser kontakttrennung und selbsthaltung im kurzschlussfall
US5252933A (en) * 1990-07-16 1993-10-12 Terasaki Denki Sangyo Kabushiki Kaisha Circuit breaker including forced contact parting mechanism capable of self-retaining under short circuit condition
EP0568881A1 (fr) * 1992-05-07 1993-11-10 Siemens Aktiengesellschaft Disjoncteur de puissance avec verrou de maintient
EP0901140A3 (fr) * 1997-09-03 2000-01-12 ABBPATENT GmbH Dispositif d'actionnement électromagnétique pour un commutateur
DE19845800B4 (de) * 1998-09-30 2006-01-05 Siemens Ag Niederspannungs-Leistungsschalter mit einer Einrichtung zur Rückstellung eines Haftmagnetauslösers
WO2011003751A1 (fr) * 2009-07-09 2011-01-13 Siemens Aktiengesellschaft Commutateur de puissance avec unité intégrée de déclenchement et d'entraînement
CN102473538A (zh) * 2009-07-09 2012-05-23 西门子公司 具有集成的触发单元和驱动单元的功率开关
US8638183B2 (en) 2009-07-09 2014-01-28 Siemens Aktiengesellschaft Power switch having integrated trigger and drive unit
CN102473538B (zh) * 2009-07-09 2015-06-03 西门子公司 具有集成的触发单元和驱动单元的功率开关
CN108400065A (zh) * 2018-05-15 2018-08-14 苏州洪恩流体科技有限公司 一种机械应急强制启动装置
CN108400065B (zh) * 2018-05-15 2024-01-30 洪恩流体科技有限公司 一种机械应急强制启动装置

Also Published As

Publication number Publication date
DE3737539C2 (fr) 1990-09-27
DE3737539A1 (de) 1989-05-18
EP0315093A3 (fr) 1991-03-06

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