EP2936529B1 - Bloc unitaire de coupure et dispositif de coupure notamment contacteur comportant au moins un tel bloc - Google Patents

Bloc unitaire de coupure et dispositif de coupure notamment contacteur comportant au moins un tel bloc Download PDF

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Publication number
EP2936529B1
EP2936529B1 EP13803095.2A EP13803095A EP2936529B1 EP 2936529 B1 EP2936529 B1 EP 2936529B1 EP 13803095 A EP13803095 A EP 13803095A EP 2936529 B1 EP2936529 B1 EP 2936529B1
Authority
EP
European Patent Office
Prior art keywords
cut
unitary
contact
block
arc
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
EP13803095.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2936529A1 (fr
Inventor
Didier Vigouroux
Michel Lauraire
Pierre-Jean REY
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 Industries SAS
Original Assignee
Schneider Electric Industries SAS
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 Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP2936529A1 publication Critical patent/EP2936529A1/fr
Application granted granted Critical
Publication of EP2936529B1 publication Critical patent/EP2936529B1/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
    • 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
    • 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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/341—Barrier plates carrying electrodes
    • 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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/346—Details concerning the arc formation chamber
    • 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 unitary cut-off unit for an electrical cut-off device.
  • Said block comprises a housing developing along a median longitudinal plane and breaking means.
  • Said means comprise at least one fixed contact comprising an electrical contact zone.
  • At least one straight connection range connects the fixed contact to an electrical terminal.
  • the cut-off means also comprise a movable contact comprising a body elongate along a longitudinal axis and having at least one end comprising a contact zone that can collaborate with a contact zone of a fixed contact.
  • At least one arc extinguishing chamber comprises a metal wall composed of two parallel lateral flanges placed on either side of a median longitudinal plane and flanking one of the ends of the movable bridge over its entire displacement between a position of opening and a closed position of the contacts, said side flanges having an insulating layer on their inner face.
  • a posterior wall connects the two lateral flanges to form a U-shaped metal wall.
  • the invention also relates to a cut-off device comprising at least one unitary breaking unit.
  • the document " EP 0 501 885 A1 discloses a unitary breaking block for an electrical breaking device, according to the preamble of claim 1
  • U of blowing In contactors with a rating of less than one hundred amperes, magnetic parts called "U of blowing” are generally used. These U blowing coupled to so-called “right” contacts have the disadvantage of being traversed by a current whose direction tends to push the foot of the arc in the opposite direction to that sought to meet the need for evacuation of the arc of the contact area.
  • the other disadvantage is relative to the magnetic stress created on the arc. Indeed, as soon as the magnetic force created on the arc by the U is greater than the reverse force force in the direction of passage of the current, the arc then comes on the copper current passage and thus may cause a strong erosion of the contact support.
  • the invention therefore aims to overcome the drawbacks of the state of the art, so as to provide a breaking block comprising efficient and small cleavage means.
  • Each arc extinction chamber of the breaking means of the breaking block according to the invention comprises a metal baffle, said baffle electrically connecting a fixed contact to a rear wall to provide electrical continuity and to form an upper part of the wall metal of said extinguishing chamber.
  • the two parallel side flanges of an arc extinguishing chamber extend in a direction parallel to the median longitudinal plane so as to completely frame the contact area of the movable contact.
  • the two lateral flanges extend so as to completely enclose the contact zone of the movable contact inside the arc extinguishing chamber.
  • the movable contact comprises at least one arc horn, the arc horn extending beyond the contact zone in the direction of the rear wall of the arc extinguishing chamber.
  • the arc horn is inclined relative to the longitudinal axis of the movable contact.
  • the arc horn forms an opening angle with respect to the upper metal deflector, the opening angle being greater than 5 °.
  • the two parallel side plates of an arc extinguishing chamber comprise internal surfaces covered with a gasogenic material.
  • the housing is formed of two half-shells assembled to form an assembly of substantially parallelepipedal shape developing along a longitudinal plane, said housing having two main faces parallel to the longitudinal plane, two lateral faces, an upper face and a lower face. .
  • the breaking means comprise two fixed contacts respectively comprising an electrical contact zone.
  • Straight connection pads respectively connect said fixed contacts to an electrical terminal.
  • the breaking means comprise a movable contact bridge comprising a body elongated along a longitudinal axis and having two ends, each end comprising a contact zone that can collaborate with a contact zone of a fixed contact.
  • Said means further comprise two arc extinction chambers.
  • the breaking device comprises an actuating device controlling the opening of the contacts by moving in translation the movable contact bridge between an open position and a closed position, moving in a direction perpendicular to the axis longitudinal.
  • the cutoff device comprises a control subassembly of the actuating device of said at least one unitary breaking unit.
  • Terminal blocks for connection are intended to be connected to the connection terminals of the at least one breaking block.
  • the cut-off device has three unitary cut-off units synchronously controlled by the control subassembly.
  • the unitary breaking unit 80 comprises a casing 31 made of molded plastic material in which electrical contacts are arranged.
  • the housing 31 is formed of two assembled half-shells 80A to form an assembly of substantially parallelepiped shape developing along a longitudinal plane XZ.
  • the housing 31 then has two main faces 81 arranged parallel to the median longitudinal plane XZ.
  • Said housing further comprises two lateral faces 82, an upper face 83 and a lower face 84.
  • an electromagnet acts on the actuating mechanism 34 to control the closing and opening of the electrical contacts.
  • the unitary breaking block 80 comprises electrical breaking means 30 comprising at least one fixed contact 32 comprising an electrical contact zone 37.
  • the electrical breaking means 30 comprise two fixed contacts 32.
  • the fixed contacts 32 respectively comprise an electrical contact zone 37.
  • the cut-off means comprise a movable contact 33 comprising an elongate body along a longitudinal axis X and having at least one end comprising a contact zone 36 capable of collaborating with a contact zone 37 of a fixed contact 32.
  • the electrical breaking means 30 comprise a movable contact bridge 33 comprising an elongate body along a longitudinal axis X. Said bridge has two ends. Each end has a contact zone 36 which can collaborate with a contact zone 37 of a fixed contact 32 in a closed position of the breaking means. In this closed position, an elastic means 25, such as in particular a helical spring, ensures between the contact zones 36 and 37, a contact pressure sufficient to ensure the passage of the current in good conditions.
  • Straight connection pads 45 respectively connect said fixed contacts 32 to an electrical terminal.
  • the movable contact bridge 33 can move in translation under the action of the actuating device 34. Indeed, the actuating mechanism 34 controls the opening of the electrical contacts by translational movement of the bridge movable contact 33 in a direction perpendicular to the longitudinal axis X. The movable contact bridge 33 moves between an open position and a closed position of the electrical contacts.
  • each opening volume 35 is associated with an arc extinguishing chamber 24.
  • Each arc extinguishing chamber 24 opening on the opening volume 35 is delimited by two flanges 68 of material ferromagnetic.
  • the two lateral flanges 68 are parallel and placed on either side of a median longitudinal plane XZ.
  • the two lateral flanges 68 are arranged to frame one of the ends of the movable bridge 33 over its entire displacement between the open position and the closed position. In other words, the two side flanges 68 are spaced from each other to allow the displacement of the movable contact bridge 33.
  • the inner walls of said flanges 38 comprises a layer 38 of insulating material. The positioning of the layers 38 of insulating material on the flanges 68 avoids the attachment of the arc on the inner walls of said flanges 68.
  • These layers 38 are preferably made of gas-forming material.
  • the extinction chamber 24 is also delimited by a rear wall 72 placed perpendicular to the XZ plane. Said posterior wall is remote from the opening volume 35 to be positioned opposite an opening volume of the contact zones 36, 37.
  • the rear wall 72 connects the two lateral flanges 68 so as to form a metal assembly substantially U-shaped.
  • the rear wall 72 connects the two flanges on part of their height.
  • the two lateral flanges 68 extend in a direction parallel to the median longitudinal plane XZ so as to completely frame the contact zone 36 of the movable contact bridge 33. More specifically, the two flanges side walls 68 extend so enclose complement the contact zone 36 of the movable contact bridge 33 inside the arc extinguishing chamber 24. In other words, the development of the flanges in length allows to close each opening volume laterally 35 so as to channel the escape of ionized particles at the time of opening of the electrical contacts.
  • the wall of each arc extinguishing chamber 24 comprises a metal upper deflector 69.
  • said baffle electrically connects a fixed contact 32 to a rear wall 72 to form an upper portion of the metal wall of said quench chamber.
  • the movable contact bridge 33 comprises arc horns 39 at each of the two ends. Said arc horns extend beyond the contact zones towards the rear walls 72 of arc extinguishing chambers 24.
  • the arc horns 39 are inclined with respect to the longitudinal axis X of the movable contact bridge 33. More specifically, the arc horns 39 form an opening angle ⁇ relative to the upper metal deflector 69.
  • the opening angle ( ⁇ ) is preferably greater than 5 °.
  • each upper baffle 69 is laterally bordered by a layer of preferably gas-forming insulating material.
  • the apparatus operates in the following manner. During the occurrence of an electric arc at the time of the separation of the contacts, an electromagnetic field is induced by the current flowing in the conductors, in particular in the fixed contacts 32, the movable contact bridge 33 and the arc. This field is induced between the flanges 68 of the substantially U-shaped ferromagnetic assembly. This magnetic field then creates an electrodynamic force on the electric arc. This force pushes the arc in the arc extinction chamber 24 towards the rear wall 72 metal.
  • the arch foot can then jump on the upper deflector 69 thus avoiding premature wear of the contacts.
  • the arc is then positioned between the horn 39 and the wall 72 to be cooled.
  • the upper baffle 69 preferably comprises crimping tabs 77 intended to collaborate with notches present the fixed electrical contact 32. This crimping ensures electrical continuity between the fixed contact 32 and upper deflector 69.
  • the invention also relates to a cut-off device 100 such as in particular a contactor.
  • the cutoff device then comprises at least one unit block 80 of cutoff as defined above.
  • the cut-off device 100 may be intended for a multipole contactor. Said contactor then comprises several identical breaking blocks and all the actuating devices 34 of said devices can be driven by an electromagnet-type actuator.
  • the device further comprises a control subassembly 104 of the actuating devices 34 of the unitary breaking units 80.
  • the subassembly 104 may be an electromagnetic actuator when it is intended to control contactor breaking blocks.
  • the subassembly 104 may be a mechanism when it is intended to control breaker blocks of a circuit breaker.
  • the cut-off device 100 comprises connection terminals 105 intended to be connected to the connection terminals 45 of the at least one breaking block.
  • the breaking device comprises three unitary breaking units 80.
  • the three unitary breaking units 80 are then controlled synchronously by the control subassembly 104 acting on the actuating devices 34 of the unitary breaking units.
  • the base 110 then comprises three imprints 120 intended to collaborate respectively with a unitary block of cut-off 80.
EP13803095.2A 2012-12-18 2013-10-29 Bloc unitaire de coupure et dispositif de coupure notamment contacteur comportant au moins un tel bloc Active EP2936529B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1262253A FR2999783A1 (fr) 2012-12-18 2012-12-18 Bloc unitaire de coupure et dispositif de coupure notamment contacteur comportant au moins un tel bloc
PCT/FR2013/052580 WO2014096583A1 (fr) 2012-12-18 2013-10-29 Bloc unitaire de coupure et dispositif de coupure notamment contacteur comportant au moins un tel bloc

Publications (2)

Publication Number Publication Date
EP2936529A1 EP2936529A1 (fr) 2015-10-28
EP2936529B1 true EP2936529B1 (fr) 2017-05-10

Family

ID=47989125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13803095.2A Active EP2936529B1 (fr) 2012-12-18 2013-10-29 Bloc unitaire de coupure et dispositif de coupure notamment contacteur comportant au moins un tel bloc

Country Status (6)

Country Link
EP (1) EP2936529B1 (ja)
JP (1) JP6411363B2 (ja)
CN (1) CN104854674B (ja)
ES (1) ES2636597T3 (ja)
FR (1) FR2999783A1 (ja)
WO (1) WO2014096583A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108962643A (zh) * 2017-05-17 2018-12-07 施耐德电器工业公司 可移除电流开关元件和包括其的电气开关装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10361051B2 (en) * 2014-11-06 2019-07-23 Rockwell Automation Technologies, Inc. Single pole, single current path switching system and method

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0230129B2 (ja) * 1983-03-31 1990-07-04 Mitsubishi Electric Corp Denryokukaiheisochi
JPS63118154U (ja) * 1987-01-27 1988-07-30
JPS63252327A (ja) * 1987-04-08 1988-10-19 三菱電機株式会社 開閉器
FR2652198B1 (fr) * 1989-09-20 1995-07-21 Telemecanique Dispositif interrupteur limiteur de courant.
JP2542571Y2 (ja) * 1989-11-29 1997-07-30 松下電工株式会社 接点装置
FR2673486B1 (fr) * 1991-02-28 1996-03-01 Telemecanique Appareil interrupteur de courant.
JPH08250010A (ja) * 1995-03-13 1996-09-27 Fuji Electric Co Ltd 気中回路遮断器
FR2733352B1 (fr) * 1995-04-24 1997-05-16 Schneider Electric Sa Pole pour appareil limiteur de courant
JP3261283B2 (ja) * 1995-06-27 2002-02-25 松下電工株式会社 回路遮断器
JPH11353967A (ja) * 1998-06-09 1999-12-24 Mitsubishi Electric Corp 開閉器
JP4058664B2 (ja) * 2000-09-29 2008-03-12 富士電機機器制御株式会社 回路遮断器の消弧装置
FR2887071B1 (fr) * 2005-06-14 2007-08-31 Schneider Electric Ind Sas Dispositif d'actionnement d'un appareil electrique interrupteur a moyens de blocage en rotation.
JP2008027656A (ja) * 2006-07-19 2008-02-07 Fuji Electric Fa Components & Systems Co Ltd 電磁接触器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108962643A (zh) * 2017-05-17 2018-12-07 施耐德电器工业公司 可移除电流开关元件和包括其的电气开关装置
CN108962643B (zh) * 2017-05-17 2022-05-24 施耐德电器工业公司 可移除电流开关元件和包括其的电气开关装置

Also Published As

Publication number Publication date
JP2016506600A (ja) 2016-03-03
WO2014096583A1 (fr) 2014-06-26
FR2999783A1 (fr) 2014-06-20
JP6411363B2 (ja) 2018-10-24
CN104854674B (zh) 2018-03-02
ES2636597T3 (es) 2017-10-06
EP2936529A1 (fr) 2015-10-28
CN104854674A (zh) 2015-08-19

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