EP2304755B1 - Cage d'extinction d'arc - Google Patents

Cage d'extinction d'arc Download PDF

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Publication number
EP2304755B1
EP2304755B1 EP09769542A EP09769542A EP2304755B1 EP 2304755 B1 EP2304755 B1 EP 2304755B1 EP 09769542 A EP09769542 A EP 09769542A EP 09769542 A EP09769542 A EP 09769542A EP 2304755 B1 EP2304755 B1 EP 2304755B1
Authority
EP
European Patent Office
Prior art keywords
arc
enclosure
sheets
grooves
cage according
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
EP09769542A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2304755A1 (fr
Inventor
Loïc Meyer
Antoine Duret
Francis Deckert
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.)
Hager Electro SAS
Original Assignee
Hager Electro SAS
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Filing date
Publication date
Application filed by Hager Electro SAS filed Critical Hager Electro SAS
Publication of EP2304755A1 publication Critical patent/EP2304755A1/fr
Application granted granted Critical
Publication of EP2304755B1 publication Critical patent/EP2304755B1/fr
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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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/36—Metal parts
    • H01H9/362—Mounting of plates in arc chamber

Definitions

  • the present invention relates to arcing extinguishing systems capable of equipping electrical devices for breaking, for example of the circuit-breaker type.
  • This separation can be done voluntarily, using a joystick, or automatically by tilting a mechanical lock when there is a sudden overcurrent or overload on the line.
  • the arc is extinguished by means including magnetic blow molding and movement of the arc to at least one extinguishing cage equipping the devices and whose exclusive function is to extinguish the arc.
  • This cage comprises in fact a stack of so-called deionization plates which divides the previously elongated arc until the voltage necessary for its maintenance is greater than that of the network in which the apparatus is used, resulting in the permanent extinction of the arc.
  • the document US 2160681 discloses an arc extinguishing cage according to the preamble of claim 1.
  • each arc extinguishing cage is perceived as an individualizable component assembled in the housing of the electric switchgear.
  • each component consists of a stack of arc cutting plates inserted in an envelope of insulating material.
  • these sheets have a U-shape so that the movable contact can rotate between the branches of the U.
  • these sheets are inserted into their fan-shaped insulating envelopes, so that they are oriented substantially perpendicular to the stroke of the pivoting movable contact, when it reaches their level.
  • the manufacture of the component constituting the arc extinguishing cage, in particular the plugging of the sheets in the envelope, is complicated and not very compatible with the conventional requirements of industrialization, in the first place of which is the automating.
  • the arc extinguishing cage according to the invention has been optimized so as to automate its manufacture under good conditions, with respect to conventional industrial requirements.
  • One of the main advantages of the cage of the invention compared to its predecessors lies in the fact that the cutting plates can be clipped inside the insulating envelope, the guidance of these sheets being further optimized by grooves and trapezoidal housings.
  • the clipping of the various sheets inside the envelope is therefore made quickly and easily, the direction of insertion being substantially constant, the positioning being performed almost automatically inside the envelope by the configuration of the housings, grooves and orifices.
  • the relative positioning of the two trapezoidal shapes that is to say on the one hand the inner housing and on the other side grooves / orifices, combined with the particular longitudinal dimensions of the cutting plates of arc allow, at the time of insertion of said sheets in the insulating casing, precise guidance which ends in a clipping of one in the other even if the direction of insertion is not exactly in the axis definitive positioning, hence the possibility of automation.
  • a wall of the housing and a wall of the grooves are in the same plane, which further improves the guidance at the time of insertion of the sheets in the envelope.
  • all the arc cutting plates are identical. Since the trapezoidal holes are made in every other groove, with a shifting from one wall to the other of the casing, this simply means that one arc cutting sheet must be turned over before the casing. insert, from so that the clipping protrusion providing one of the lateral guide slots is found alternately on one side or the other.
  • these arc cutting plates are all identical except for the distal sheet of the fixed contact, which is provided with a hooking nose of the arc disposed between the branches of the U.
  • this feature aims to keep to a minimum the wear of the end of the movable contact. It should be noted that, as will be shown in more detail below, the fixed contact is in fact arranged directly under the cage.
  • the unitary piece forming the terminal is extended by a portion placed at one of the ends of the envelope comprising the fixed contact, which comprises a bow foot sheet in the form of a tab close to the fixed contact cut at the end of the envelope. interior and salient of said portion.
  • the stationary contact is disposed adjacent to an arc sheet, in this case an arc foot plate in one piece with the rest and which, because of its configuration, improves the effect of loop applied to the electric arc.
  • the envelope may then additionally comprise a U-shaped wall that surrounds said cut tab, so as to isolate the arc.
  • the arc extinguishing cage according to the invention is such that its envelope comprises a removable closure cover placed on the side of the connection terminal. This cover closes in a way the housing constituted by the insulating envelope, after insertion of the arc cutting plates.
  • the invention also relates to a line breaking device, for example of the circuit breaker type, and comprising an arc extinguishing cage as described above.
  • the insulating envelope (1) comprises a stack of arc cutting plates (2), in this case 9 in number. These plates (2) are configured in such a way that they can be clipped by insertion into the direction of arrow F ( figure 2 ), in particular by cooperation of lateral guide slots (see Figures 7 and 8 ) in orifices in the side walls (3, 3 ') of the insulating envelope. (1).
  • the figure 3 represents a single piece (4) forming both a connection terminal and a fixed contact (6) and, via an arc conduction plate (5), cut inside a portion containing the fixed contact (6), means for fitting at the lower end of the envelope (1).
  • the relative assembly of this terminal (4) to the insulating envelope (1) appears in the figure (4).
  • the figure 5 shows the housings (7, 7 ') of the sheets (2) situated on either side of a free space (E) inside which the moving contact (not shown) moves when it has detached itself fixed contact (6). Said movable contact actually pivots inside the space (E), remaining substantially parallel to the sheets (2). These are stacked in a fan in the insulating envelope, as appears in particular in the Figures 1 and 2 .
  • the housings (7) serving as an axial stop for the arc cutting plates (2) appear more precisely in figure 6 .
  • the positioning of said sheets (2) is also achieved by lateral trapezoidal grooves (8), one of which has an orifice (9) opening out of the side wall (3).
  • the wall (3 ') comprises in the same manner trapezoidal grooves (8'), one of which is provided with an orifice (9 ').
  • a through hole (9, 9 ') exists only in a groove (8, 8') On two.
  • these orifices are offset from one side wall (3) to the other side wall (3 '), so that there are never two orifices (9, 9') facing each other.
  • the sheets (2) are inserted so as to abut the bottom of the housings (7, 7 '), the two branches (10, 10') of the U-shaped structure of these sheets (2) forming between them a free space (E) allowing the pivoting of the movable contact at the opening.
  • the plates (2) have on each side a lateral guide slot (11, 11 '), one of which is provided with a clipping protrusion (12). This protrusion (12), penetrating into the orifices (9, 9 '), allows the clipping of each sheet in the insulating envelope (1).
  • the sheet placed at the top may include a hooking nose (13) to reduce the wear of the tip of the movable contact. Such a sheet is shown in figure 8 .
  • FIGS 9 and 10 show successively views of the side wall, (3 ') and the side wall (3) to be aware of. fan stacking with the relative positioning of each arc cutting plate (2) with respect to the openings (9, 9 '). This relative positioning will be explained in more detail with reference to Figures 13 to 15 .
  • FIG. figure (12 ) The assembly consisting of the insulating envelope (1), the.cover (14) and the unitary piece forming a terminal (4), a fixed contact (6) and an arch foot plate (5) are shown in FIG. figure (12 ), exploded view.
  • This figure shows the existence in the lower part of the insulating casing (1), a wall U (16) surrounding the tab (5) forming the foot of bow sheet. This wall (16) protects the said sheet metal (5) arch.
  • the figure 13 which is a section at the arrows AA of the figure 5 , shows the relative positioning of the housings (7) and the grooves (8) trapezoidal, including if necessary.through orifices (9).
  • each trapezoidal groove (8) there is, in the extension inwards, a housing (7).
  • the walls of this housing are also trapezoidal, to the extent of the shape of the corresponding groove (8).
  • each housing (7) is in the extension, that is to say in the same plane, as one of the walls of each trapezoidal groove (8).

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Discharge Heating (AREA)
EP09769542A 2008-06-27 2009-06-26 Cage d'extinction d'arc Active EP2304755B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0854363A FR2933230B1 (fr) 2008-06-27 2008-06-27 Cage d'extinction d'arc
PCT/FR2009/051235 WO2009156701A1 (fr) 2008-06-27 2009-06-26 Cage d'extinction d'arc

Publications (2)

Publication Number Publication Date
EP2304755A1 EP2304755A1 (fr) 2011-04-06
EP2304755B1 true EP2304755B1 (fr) 2012-03-07

Family

ID=40040036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09769542A Active EP2304755B1 (fr) 2008-06-27 2009-06-26 Cage d'extinction d'arc

Country Status (7)

Country Link
EP (1) EP2304755B1 (ja)
JP (1) JP5203509B2 (ja)
CN (1) CN102138193B (ja)
AT (1) ATE548744T1 (ja)
BR (1) BRPI0910151B1 (ja)
FR (1) FR2933230B1 (ja)
WO (1) WO2009156701A1 (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102509676B (zh) * 2011-10-28 2014-12-03 常熟瑞特电气股份有限公司 一种框架断路器灭弧室
CN104576250A (zh) * 2015-01-23 2015-04-29 常熟开关制造有限公司(原常熟开关厂） 一种断路器的灭弧室结构
CN109559946A (zh) * 2017-09-27 2019-04-02 常熟开关制造有限公司(原常熟开关厂） 一种断路器
RU208385U1 (ru) * 2021-07-29 2021-12-16 Общество с ограниченной ответственностью "ЭЛЕКТРОРЕШЕНИЯ" Дугогасительная камера

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2160681A (en) * 1937-12-30 1939-05-30 Westinghouse Electric & Mfg Co Circuit interrupter
JPS57161749U (ja) * 1981-03-31 1982-10-12
JPS6215750U (ja) * 1985-07-12 1987-01-30
JPS6326949U (ja) * 1986-08-05 1988-02-22
JPH0343921A (ja) * 1989-07-12 1991-02-25 Mitsubishi Electric Corp 回路遮断器
JP3216776B2 (ja) * 1994-06-14 2001-10-09 富士電機株式会社 回路遮断器
US5589672A (en) * 1994-06-14 1996-12-31 Fuji Electric Co., Ltd. Circuit breaker with arc quenching device and vent
IT1314358B1 (it) * 1999-12-31 2002-12-09 Abb Ricerca Spa Camera d'arco per interruttori di bassa tensione
US20050263492A1 (en) * 2004-05-28 2005-12-01 Siemens Energy & Automation, Inc. Molded arc chute
CN2762330Y (zh) * 2004-07-23 2006-03-01 浙江正泰电器股份有限公司 一种低压断路器的灭弧室
CN2743961Y (zh) * 2004-11-11 2005-11-30 常熟开关制造有限公司(原常熟开关厂） 断路器的灭弧装置
CN2899092Y (zh) * 2006-01-25 2007-05-09 大全集团有限公司 断路器灭弧栅片及灭弧室
CN2938361Y (zh) * 2006-03-18 2007-08-22 天正集团有限公司 小型断路器灭弧装置

Also Published As

Publication number Publication date
WO2009156701A1 (fr) 2009-12-30
ATE548744T1 (de) 2012-03-15
FR2933230B1 (fr) 2010-06-11
JP5203509B2 (ja) 2013-06-05
CN102138193A (zh) 2011-07-27
BRPI0910151B1 (pt) 2018-12-04
FR2933230A1 (fr) 2010-01-01
EP2304755A1 (fr) 2011-04-06
BRPI0910151A2 (pt) 2016-06-14
CN102138193B (zh) 2014-01-22
JP2011526059A (ja) 2011-09-29

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