EP0514230A1 - Stromschaltgerät - Google Patents

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Publication number
EP0514230A1
EP0514230A1 EP92401026A EP92401026A EP0514230A1 EP 0514230 A1 EP0514230 A1 EP 0514230A1 EP 92401026 A EP92401026 A EP 92401026A EP 92401026 A EP92401026 A EP 92401026A EP 0514230 A1 EP0514230 A1 EP 0514230A1
Authority
EP
European Patent Office
Prior art keywords
housing
heater
winding
fixed contact
wire
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Withdrawn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
EP92401026A
Other languages
English (en)
French (fr)
Inventor
Christian Blanchard
Michel Lauraire
Didier Vigouroux
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.)
Schneider Electric SE
Original Assignee
La Telemecanique Electrique SA
Schneider Electric SE
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 La Telemecanique Electrique SA, Schneider Electric SE filed Critical La Telemecanique Electrique SA
Publication of EP0514230A1 publication Critical patent/EP0514230A1/de
Withdrawn legal-status Critical Current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
    • H01H71/12—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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0214—Housing or casing lateral walls containing guiding grooves or special mounting facilities

Definitions

  • the present invention relates to a current switching device, comprising in a housing, at least one polar current path, established between two connection terminals, with, in series, a breaking pole formed by at least one fixed contact and at minus a movable contact, a thermal protection release consisting of a bimetallic strip surrounded by a heater and a magnetic protection release consisting of a winding wound around a coil carcass in which slides a mobile core, the winding wire being connected by an intermediate conductor to the end of the heater.
  • This magneto-thermal module includes a bimetal thermal trip device capable of controlling the opening of the contacts via a tripping mechanism, in response to an overload current.
  • the magneto-thermal module also includes an electromagnetic trip device provided with a movable core sliding in a coil carcass whose coil is traversed by the polar current. The displacement of the core, in response to an overload or an overcurrent, activates the opening of the contacts.
  • the two triggers are housed on the same side of the contact bridge as for example in patent EP-0 237 607.
  • this arrangement lengthens the conductive connections between the fixed contact and the bimetallic strip and between the magnetic trigger and the connection terminal.
  • the object of the present invention is to provide an arrangement of thermal and magnetic protection module which makes it possible to easily connect the components without the wires being bent and which reduces the length of the electrical connections extending between the fixed contact and the connection terminal. .
  • This arrangement allows the installation of an arc blowing loop between the two triggers of the module.
  • the invention allows good retention of the triggers in relation to the housing.
  • the industrialization of the module is facilitated by the arrangement of the parts making it up and by the accessibility of the welds ensuring electrical continuity.
  • the apparatus according to the invention is characterized in that the wire of the heater has a substantially straight lower end without curvature and soldered to the intermediate conductor which is soldered to a substantially straight end, without curvature, of the winding wire whose l other substantially straight end without curvature is welded to a tab extending parallel to the axis of the winding and extending by a pad carrying the connection terminal, the two trip devices being mounted on two conductive pads connected one to the contact fixed, the other to a terminal and carried by a removable support of the housing.
  • the bimetallic strip of the thermal trip device is fixed at its foot to a range of the conductor carrying the fixed contact and having a U-shape enveloping a support of the housing so that the fixed contact is disposed under the bimetallic strip and that is positioned towards the center of the device relative to the magnetic protection release.
  • the intermediate conductor joining the thermal trigger to the magnetic trigger joins the lower end of the heater to the lower end of the winding wire and has the shape of a loop so as to be used for arc blowing.
  • the support is a drawer which consists of a driver-carrying apron and two side walls providing an internal chamber opening into the channel formed by two partitions of the housing, on the side of the central part, these walls are 'inserting between these partitions so as to be adjacent to them.
  • the switch device illustrated in the drawings is a multi-pole protective device of the contactor-circuit breaker type, of which only one pole has been shown.
  • the device comprises a one-piece housing 1 associated with a cover 93.
  • the housing 1 and the cover 93 are produced by molding in an electrically insulating material (plastic).
  • the base 11 for fixing the box is directly secured to isolation partitions 18 which, two by two with the bottom 11 of the box, constitute a channel 15 delimiting the breaking chamber of a pole.
  • isolation partitions 18 extend perpendicular to the bottom or flat base 11 and parallel to each other.
  • the channel 15 cooperates with a drawer-support 3 which, on the one hand, delimits the breaking chamber 33 with the housing and which, on the other hand, carries a magnetic and thermal trip module 10.
  • the pole of the device which is represented is of the double break type. It has two fixed contacts 41 and 51 arranged on two conductors 4 and 5 connecting them respectively to connection terminals 48 or 58 intended to be connected to a power line.
  • a bridge 63 of movable contacts 61 and 62 cooperate with the fixed contacts to interrupt the current between the terminals. These movable contacts 61 and 62 move in translation relative to the fixed contacts 41 and 51, perpendicular to the line passing through these fixed contacts.
  • the plane of displacement and symmetry of the movable contacts 61 and 62 is marked PP '. In the closed position, the movable contacts are pressed against the fixed contacts. In the open position, the movable contacts are separated from the fixed contacts following an automatic tripping - in the event of overload or overcurrent - or a manual command.
  • the movable bridge 63 carrying the movable contacts 61 and 62 is mounted on a contact carrier module 6.
  • the bridge 63 moves between the fixed contacts and the bottom 11 of the housing.
  • the contact carrier module 6 comprises a mobile support 64 in which are mounted the contact bridges 63 of the different poles and associated operating slides 65. Each contact bridge 63 is housed sliding in a window of the support 64. A contact compression spring biases each bridge 63 associated, upwards, in the direction of closing of the contacts. As an indication, the spring is housed in the window. Each of the bridges 63 can be moved in the opening direction of the contacts by the associated slide 65.
  • This module 6 comprises as many slides as there are poles.
  • the module 6 is introduced, according to the plane PP ′, into a housing of the housing.
  • the support 64 has slots into which the partitions of the housing penetrate.
  • the mobile support 64 can slide, according to the plane PP ′, relative to the housing, being guided against the partitions of the housing.
  • the bridges 63 of the module 6 can be moved following a fault detected by the magnetic and thermal trigger assembly 10 and this after triggering the lock 92 which will be discussed later.
  • the bridges 63 of the module 6 can also be moved by electrodynamic repulsion or by a control button such as 91 which acts on the lock and the electromagnet.
  • the pads of the fixed contacts 41 and 51 are arranged on the conductors 4 and 5, on the side of the bottom 11 of the housing.
  • the fixed contacts 41 and 51 are positioned towards the central part of the device while the connection terminals 48 or 58 are positioned on the sides of the housing.
  • the conductor 4 directly connects the fixed contact 41 to the terminal 48.
  • Fixed contact 51 is connected in series to terminal 58 via conductor 5, a bimetal thermal trip unit, generally designated at 7, for protection against overload currents and an electromagnetic trip unit, generally designated at 8, for protection against short circuit currents.
  • trip units 7 and 8 the conductor 5 and the fixed contact 51, the terminal 58 and the intermediate connections are part of the same one-piece sub-assembly designated by the general reference 10.
  • the magnetic and thermal tripping module 10 is shown in detail in FIGS. 3 and 4. This module 10 is arranged on the side opposite to the electromagnet 94 relative to the plane PP ′.
  • the bimetallic trip unit 7 is positioned between the magnetic protection trip unit 8 and the translation plane PP ′ of the movable contact bridge 63. The axes of the bimetallic strip and of the trip unit 8 are parallel to PP ′.
  • the module 10 includes a drawer 3 made of electrically insulating material (plastic) which carries the triggers 7 and 8.
  • the drawer 3 has an upper deck 31 connected to two side walls 32. These walls provide in each drawer an internal chamber 33 forming a breaking chamber.
  • the internal chamber 33 of the drawer 3 opens into the associated channel 15, on the side of the central part marked by the plane PP ′.
  • the two side walls 32 and the adjoining upper deck 31 have a U-shaped cross section (parallel to PP ′).
  • the walls 32 of the drawer are inserted between two adjacent partitions 18 of the housing so as to be adjacent to them. Due to the U-shaped cross section of the drawer 3, the internal chamber 33 formed therein opens into the bottom of the corresponding channel.
  • the triggers 7 and 8 are housed between two partitions 18 of the housing.
  • the thermal trip device 7 associated with each pole comprises a flat bimetallic strip 71 extending in a plane parallel to the plane marked QQ ′ parallel to the partitions 18 and perpendicular to the plane PP ′. By its foot 75, it is fixed integrally to the pad 54 of the conductor 5 carrying the fixed contact 51.
  • a heater 73 isolated from the bimetallic strip. This heater is electrically connected by its upper end to the free end 72 of the bimetallic strip.
  • the free ends 72 of the triggers are capable of actuating, via the lock mechanism 92, the slides 65 of the module 6.
  • the plane of the bimetallic strip 71 is substantially parallel to the partitions 18.
  • the electromagnetic trip device 8 of each pole comprises a coil carcass 81 around which a control coil 82 is wound. It also comprises a movable core 83 sliding inside the coil carcass 81. A return spring is mounted between the core and the bobbin case. The movable core 83 extends axially out of the coil carcass and acts on the mechanism 92 itself acting on the slides 65 of the module 6.
  • the conductor 5 has a part or blade 52, located under the apron of the drawer 3, which carries the fixed contact 51 and is extended by a lateral portion 53 and by a track 54 folded over the top of the drawer 3.
  • This track 54 is integral foot 75 of bimetallic strip 71.
  • the substantially straight lower end 74 without curvature of the heater 73 extends parallel to the plane of the bimetallic strip, towards the plane PP ′.
  • This end 74 is connected, by an intermediate conductor 56 in the form of a loop, to the lower end 85 of the winding wire 82.
  • the upper end 84 of the winding wire is welded to a conductive piece 57 made of ferromagnetic material and consisting of a tab 571 and a pad 572 carrying the terminal 58 and the magnetic trigger 8.
  • the tab 571 extends parallel to the winding axis and is extended by the area 572 carrying the terminal 58.
  • the lower end 85 substantially straight and without curvature of the winding wire extends parallel to the plane of the bimetallic strip while the upper end 84 substantially straight and without curvature extends perpendicular to this plane.
  • the upper end 84 of the winding wire is welded at any height of the tab 571 according to the natural outlet of this end after winding.
  • the pads 54 and 572 are pressed against the top of the drawer 3 while the blade 52 is pressed under this drawer 3.
  • the part 57 has a folded part 573 which is housed in the coil carcass 81 so as to constitute the fixed core.
  • the ferromagnetic tab 571 also participates in the circulation of the flux created by the coil.
  • the intermediate conductor 56 in the form of a loop has a central stirrup 563 extending above the drawer and welded to the end 74 of the heater.
  • This central bracket 563 is connected to two lateral loops 561 and 562 extending vertically against the sides of the drawer 3.
  • the two lateral loops 561 and 562 meet a lateral bracket 564 extending above the drawer and below of the bobbin case 81.
  • the stirrup 564 is extended by a bar 565 to which the lower end 85 of the winding wire is welded.
  • the movable core 83 is extended by a coupling element 86 connected by a return mechanism 87 to the lock 92.
  • the lateral edges of the pad 54 engage in slides 182 formed on the partitions 18 of the housing.
  • the lateral edges of the track 572 engage in slides 183 formed on the partitions 18.
  • the range 572 engages in a groove 811 of the coil carcass 81 so that the latter is immobilized in translation.
  • the device also includes a lock release mechanism common to all the poles and housed in a compartment of the housing.
  • the mechanism 92 is coupled to a manual control and reset button 91 which is used for resetting, closing and opening of the contacts.
  • An electromagnet 94 for driving the contacts housed in the housing 1 acts on the module 6.
  • This electromagnet comprises, in a manner known per se, a fixed magnetic circuit, a movable armature 95 and a coil connected to terminals by a switch. The latter can be controlled in a manner known per se.
  • the movable armature 95 of the electromagnet is subject to a return spring and acts via the button 91 and / or another control.
  • the movable armature 95 of the electromagnet acts on a movable lifter 19, articulated around an axis 191 on the housing and actuating the movable support 64 of the module 6. This spreader allows the support 64 to move to operate the contacts .
  • So-called “deionization” plates can be placed near the contacts to facilitate rapid interruption of the current. These plates can be mounted on the drawers or on the housing.
  • the thermal trip device 7 acts on a differential system 76 which actuates, via the lock mechanism 92, the movable contacts.
  • the magneto-thermal trip device 8 acts, via the return mechanism 87 and the lock mechanism 92, on the movable contacts.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
EP92401026A 1991-05-13 1992-04-13 Stromschaltgerät Withdrawn EP0514230A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9105748 1991-05-13
FR9105748A FR2676592B1 (fr) 1991-05-13 1991-05-13 Appareil interrupteur de courant a protection thermique et magnetique.

Publications (1)

Publication Number Publication Date
EP0514230A1 true EP0514230A1 (de) 1992-11-19

Family

ID=9412709

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92401026A Withdrawn EP0514230A1 (de) 1991-05-13 1992-04-13 Stromschaltgerät

Country Status (4)

Country Link
US (1) US5276417A (de)
EP (1) EP0514230A1 (de)
JP (1) JPH0628963A (de)
FR (1) FR2676592B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001033595A1 (de) * 1999-10-29 2001-05-10 Moeller Gmbh Elektrisches schutzschaltgerät

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU706793B2 (en) * 1996-12-31 1999-06-24 Lg Industrial Systems Co. Ltd. Separable circuit breaker
US6150908A (en) * 1998-09-03 2000-11-21 Fuji Electric Co., Ltd. Circuit breaker with metal melt isolation device
DE102006055007A1 (de) * 2006-11-22 2008-05-29 Abb Ag Installationsschaltgerät mit einer Doppelunterbrechung
DE102008016036A1 (de) * 2008-03-28 2009-10-01 Abb Ag Installationsschaltgerät mit einer Doppelunterbrechung
DE102011008831A1 (de) * 2011-01-19 2012-07-19 Abb Ag Istallationsschaltgerät
KR101252409B1 (ko) * 2011-12-02 2013-04-08 현대중공업 주식회사 히터 결합부를 갖는 베이스 어셈블리 및 이를 갖는 배선용 차단기
CN108054066B (zh) * 2017-12-15 2023-09-12 浙江正泰电器股份有限公司 断路器电磁脱扣器的冷弯转轴结构

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237607A1 (de) * 1986-03-21 1987-09-23 Square D Company (Deutschland) Gmbh Schütz

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4800332A (en) * 1985-03-07 1989-01-24 Texas Instruments Incorporated Reconfigurable integrated circuit with enhanced testability of memory cell leakage
FR2611082B1 (fr) * 1987-02-13 1993-05-28 Telemecanique Electrique Appareil interrupteur de protection a ouverture et fermeture telecommandables
FR2638563B1 (fr) * 1988-10-27 1990-12-14 Telemecanique Electrique Dispositif de securite pour appareil de commutation realise par l'assemblage de plusieurs elements modulaires amovibles

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237607A1 (de) * 1986-03-21 1987-09-23 Square D Company (Deutschland) Gmbh Schütz

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001033595A1 (de) * 1999-10-29 2001-05-10 Moeller Gmbh Elektrisches schutzschaltgerät

Also Published As

Publication number Publication date
FR2676592B1 (fr) 1993-07-23
JPH0628963A (ja) 1994-02-04
FR2676592A1 (fr) 1992-11-20
US5276417A (en) 1994-01-04

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