EP1020882A1 - Lichtbogenlöschkammer mit Wänden aus Verbundstoff, und mit solcher Kammer versehenes Schaltgerät - Google Patents

Lichtbogenlöschkammer mit Wänden aus Verbundstoff, und mit solcher Kammer versehenes Schaltgerät Download PDF

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Publication number
EP1020882A1
EP1020882A1 EP99410175A EP99410175A EP1020882A1 EP 1020882 A1 EP1020882 A1 EP 1020882A1 EP 99410175 A EP99410175 A EP 99410175A EP 99410175 A EP99410175 A EP 99410175A EP 1020882 A1 EP1020882 A1 EP 1020882A1
Authority
EP
European Patent Office
Prior art keywords
layers
side walls
arc extinguishing
contact members
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.)
Granted
Application number
EP99410175A
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English (en)
French (fr)
Other versions
EP1020882B1 (de
Inventor
Marc Schneider Electric Industries SA Blancfene
Marc Schneider Electric Industries SA Rival
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
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Schneider Electric Industries SAS
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Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP1020882A1 publication Critical patent/EP1020882A1/de
Application granted granted Critical
Publication of EP1020882B1 publication Critical patent/EP1020882B1/de
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
    • 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
    • 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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes

Definitions

  • the invention relates to an arc extinguishing chamber, the side walls of which are composite material, as well as a switchgear comprising such a bedroom.
  • the room is subjected to very thermal, mechanical and electrical constraints high: to fix ideas, a current of 200,000 amps maintained for 4 ms at an arc voltage of 500 volts gives off an energy of 400 kJ.
  • the plasma column forming the arc can reach a temperature between 4,000 and 20,000 Kelvin.
  • the separators are subjected during cutting to electrodynamic forces tending to keep them away from each other.
  • the pressure in the extinguishing chamber can simultaneously reach 1.4 MPa.
  • the side walls must withstand these stresses without becoming themselves conductive nor give off gas with low dielectric strength.
  • the walls are made of a laminate composed of layers successive thermosetting resin reinforced with fiberglass.
  • the fibers of glass give the walls their mechanical rigidity.
  • glass fibers contain elements of low ionization potential.
  • the elements having a low ionization potential inside the fibers ionize and hinder the arc extinguishing process, especially for voltages above 400 Volts.
  • molten glass beads appear on the surface due to ablation. of the resin, and promote the adhesion of metallic particles released in the chamber by the fusion of the separators.
  • the document FR-2 616 009 proposes a laminated structure three-layer composite.
  • the outer layers are made up of a multitude of linen fabric fibers impregnated with melamine resin while the inner layer consists of a multitude of woven glass fibers impregnated with resin melamine.
  • the layer comprising the glass fibers gives the structure its stiffness, while the surface layer comprising flax fibers remains conductive even during and after exposure to the arc.
  • This laminate material turns out satisfactory in applications where it is exposed to the arc only from the side of its layer containing flax fibers.
  • the material poses some problems in an architecture requiring that a side wall song be exposed to the arc.
  • a such architecture is encountered for example in the case of a circuit breaker comprising, for a given phase, two poles connected in parallel, each with a interrupting chamber, the interrupting chambers being connected to each other by a communication opening in the adjacent side walls of the two rooms and allowing the circulation of gases.
  • a circuit breaker of this type is described in the French patent application bearing the national registration number 98/06206. With such a cut of the laminated material plate, the layer with glass fibers is flush with the edge surface, resulting in a vulnerability in this area. It is of course possible to apply an additional layer flax fiber to specifically protect this area, but this solution is expensive.
  • thermosetting resins based on melamine reinforced with cellulosic fibers cotton or linen by a thermoplastic polyamide polymer matrix containing a cellulosic material coated with a hardened melamine-formaldehyde resin, in which the polyamide and the enveloped cellulosic material are present in a ratio of 6: 1 to 1: 1.
  • the material used is supposed to confer properties dielectrics at least equal to those of thermosets, and better properties mechanical.
  • experience shows that the thermoplastic nature of material is problematic from the point of view of temperature resistance, especially during progressive diffusion, during and after the cut, of the stored heat by metal separators, i.e. in practice around 30% of the energy of break.
  • the polyamide of the walls tends to soften when the temperature goes up, it undergoes deformations quickly making the room unusable. It's here reason why this solution is not applicable to circuit breakers Student.
  • the invention therefore aims to remedy the drawbacks of the state of the art, so as to provide a side wall structure of the breaking chamber efficient for high-caliber low-voltage circuit breakers releasing arc energies around 400 kJ. It aims in particular to determine such structure whose edges are also resistant to cutting.
  • a chamber arc extinguishing device intended to be placed next to contact members separable from a switchgear and to extinguish the arc generated by the separation of said contact members, comprising: two side walls facing one of the other, each comprising a composite structure laminated to at least two layers, and a plurality of spaced plates, disposed between the side walls and held by the side walls, one of said layers comprising a fabric polyamide impregnated with a thermosetting resin. Resin is not just disposed between two layers of fabric, but at least partially envelops the fibers or the constituent threads of the fabric.
  • each of the layers of the laminated composite structure comprises a fabric of polyamide fibers at least partially coated with a resin thermosetting.
  • the structure obtained is then produced at low cost.
  • thermosetting resin is of the type obtained by condensation of formaldehyde with melamine.
  • thermosetting resin contains flame retardant elements. Such a structure ensures even better performance.
  • a second aspect of the invention relates to a switchgear comprising a room as defined above.
  • a hexapolar circuit breaker 10 includes a housing insulator formed by the assembly of a rear base 12, an intermediate frame 14 with open bottoms and a front face 16, which delimit a rear compartment and a front compartment on either side of a front partition 18 of the chassis intermediate 14.
  • a control 20 of circuit breaker 10 which acts on a switching shaft 22 common to all the poles of the circuit breaker.
  • This mechanism 20 is attached to the partition front 18 of the intermediate frame 14.
  • the rear compartment is itself subdivided into elementary compartments by intermediate partitions 24, 25 (cf. figure 4) of the intermediate frame 14.
  • In each elementary compartment is housed a pole of the circuit breaker.
  • Each pole has a contact device separable as well as an arc extinguishing chamber 26.
  • the separable contact device comprises a fixed contact member 28 directly supported by a first connection pad 30 of the circuit breaker passing through the base 12 of the insulating housing, and a movable contact member 32.
  • the latter is provided with a plurality of parallel contact fingers 34 pivotally mounted on a first transverse axis 36 of a support cage 38.
  • the heel of each finger is connected to a second connection pad 40 passing through the base 12, by through a braid 42 of conductive material.
  • Connection areas 30, 40 are intended to be connected to the upstream and downstream network, for example to through a busbar.
  • the end of the cage 38 located near the second connection pad 40 is equipped with an axis housed in a bearing integral with the insulating housing, so as to allow the cage 38 to pivot between a position open and a closed position of the pole around a geometric axis 44 materialized in FIG. 2.
  • a contact pressure spring device 46 is arranged in a notch in the cage 38 and urges the contact fingers 34 to pivot about of the first axis 36 counterclockwise.
  • Each finger of contact 34 includes a contact pad 47 which, in the position shown on Figure 2, is in contact with a single pellet 49 disposed on the member fixed contact 28.
  • the cage 38 is coupled to the switching shaft 22 by a transmission link so that the rotation of the shaft 22 induces a pivoting of the cage 38 around the axis 44.
  • the structure of the arc extinguishing chamber 26 is more particularly visible on Figure 3.
  • the chamber has a juxtaposition of separators constituted by metal deionization strips 50 of the electric arc.
  • the separators are assembled on an insulating support comprising two lateral cheeks 52.
  • the internal face of each cheek 52 is provided with notches cooperating with asperities complementary to the slats for positioning them. Of the same way is ensured the positioning of an upper bow horn 54.
  • a wall composite outer 56 is arranged substantially perpendicular to the cheeks side and deionization strips. This wall constitutes a framework for the assembly of the side cheeks. It has exhaust ports for the discharge of cut-off gases, and a stack of intermediate filters 58 intended to limit pollution of the outside environment.
  • the extinguishing device is completed by a lower arc guide horn 62, fixed to the base 12 and electrically connected to the fixed contact member 28 of the pole, which delimits downward the entry of the extinguishing chamber 26.
  • the fixed contact 28 a in the area directly opposite the front end of the fingers 34 of the movable contact 32, a profiled edge 64 approximately complementary to the profile of the fingers 34, rising towards the protuberance of the lower horn 62 to ensure overall with this a profile without noticeable break in slope.
  • This area of fixed contact called spark arrester, eliminates the risk of deterioration of contact pads 47 and 49.
  • the arc is initially drawn between the spark arrester and the front end fingers 34, and immediately migrates to settle between the protuberance of the horn 62 and the front part of the fingers 34, avoiding any displacement of the arch towards the pellets 47, 49 or any priming at the level thereof.
  • the arch extends in front of the chamber and enters it in the usual way.
  • the poles of the circuit breaker 10 are paired two by two so as to form three groups of two adjacent poles.
  • twinning is meant the electrical connection in parallel with the fixed contact members 28 of the two poles on the one hand and the members mobile contact 32 of the two poles of the other. In practice, this twinning is done outside the housing, at the free ends of the connection pads 30, 40 of the contacts to be connected, by the interposition of two connection strips 66 visible for one of the poles in FIG. 4, these two bars being fixed by each from their ends to a corresponding part of each range 30, 40, projecting out of the case.
  • the three dividing partitions 24 separating two twin compartments differ from the two other dividing partitions 25 in that they comprise a light communication 68 of substantially rectangular section, as seen in the Figures 2, 4 and 5.
  • This light is located in the vicinity of the contact area, at the level from the entrance to the extinguishing chamber. It is arranged in such a way that the lower arc horns 62 of the two twin poles facing each other on either side of the light.
  • the light 68 extends substantially up to the height upper horns 54.
  • the light extends on either side of the entrance to room 26.
  • the intermediate partition 24 Lengthwise, measured along an axis perpendicular to the preceding axis and to the pivot axis 44 of the contact member mobile 32, the light extends on either side of the entrance to room 26. In the entrances of the two extinguishing chambers 26 are practically not separated by the intermediate partition 24.
  • the side flanges 52 of the chambers extinction 26 have a cutout 70 corresponding to the light 68 of the partition intermediate 24 separating the twin poles.
  • the face of the side cheeks 52 of each extinguishing chamber 26 opposite the adjacent intermediate partition 24, 25, is attached over its entire surface to the partition.
  • Each lateral cheek 52 of chamber 26 is constituted by a structure 100 of laminated composite material comprising three superimposed layers 102, 104, 106, shown in FIG. 6.
  • all the layers are identical and each composed of a polyamide fabric composed of threads or weft fibers 108 and threads or warp fibers 109 forming a web weave coated with a thermosetting resin 110 obtained by condensation of formaldehyde with melamine of formula C 3 N 6 H 6 .
  • the fabric gives the structure its tensile strength.
  • the resin gives the material its consistency and resistance to compression. It occupies not only the space between the different layers of fabric, but also the space between the threads of each layer of fabric, so that each thread is more or less coated with resin.
  • each layer 102, 104, 106 is composed of a canvas impregnated with resin.
  • the polyamide used can be a polyamide Pa 6 or Pa 6.6.
  • a laminated structure corresponding to these criteria is marketed by the company ITEN Industries (Ashtabula, Ohio, USA) under the reference "Resiten N-9".
  • the composite structure 100 can be obtained according to a process shown diagrammatically on the Figure 7.
  • a strip 120 of polyamide fabric from a roll 122 flows continuous in a resin bath 124 fed by a reservoir 126, then in a heating tunnel 128, connected to a boiler 130. Under the effect of heat, the resin melts and then hardens through a cross-linked polymerization process.
  • the coated fabric is cut into sheets 132 by a cutting press 134.
  • the sheets 132 are stacked.
  • the stack 136 is passed through a press 138 under high pressure, at a temperature of about 140 ° C to 210 ° C, so that cause interlaminar flow of the resin, allowing adhesion between the sheets 132.
  • the plates 140 obtained are then cut in a second cutting press 142, so as to give them the final shape in accordance with their use.
  • thermosetting resin ensures the mechanical strength of the wall, because the polyamide is a thermoplastic material, reversible in liquid beyond 300 ° C.
  • FIG. 8 represents a cross section of a cheek according to a second mode of embodiment of the invention, which differs from the previous one only in the lesser thickness of the resin layer 100 separating two successive layers of fabric.
  • the mechanical and dielectric characteristics of this cheek are more homogeneous.
  • the performances obtained are of the same order as that of the previous example. This illustrates the undoubtedly preponderant importance of the resin coating the threads of the fabric polyamide and permeating the fabric compared to that located further from the threads polyamides, between two layers of fabric.
  • the fabric weave can be simple (canvas weave) or complex.
  • the different sheets making up the different layers of the structure can be stacked in the same direction, or alternatively in different directions, so as to obtain special mechanical characteristics.
  • the structure can also include, in more than one or more layers composed of melamine reinforced with polyamide fabric, layers of different nature.
  • the coating of the fibers of the polyamide fabric can be partial or complete.
  • Thermosetting resin may usefully contain elements flame retardants, such as hydrated or non-hydrated inorganic fillers (hydroxides of magnesium, zinc borate ...), nitrogen compounds, phosphorus compounds, organo-halogenated compounds, or organophosphorus compounds. Number of layer is variable as required. Good results are obtained with a structure with an overall thickness of 1 to 3 mm, comprising 2 to 20 layers.
  • the invention is not limited to the particular type of room described in the example of realization.
  • the shape and arrangement of the dividers can be any.
  • the room may or may not be removable from the housing that contains it.
  • the invention has been described with reference to a particular circuit breaker with two polar compartments per phase, connected to each other by an opening, the invention is not limited to this type of switchgear. She is naturally applicable to any type of switchgear using chambers arc extinction.
  • the invention is intended to also apply to rooms whose walls do not necessarily have edges exposed to the arc.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
EP99410175A 1999-01-11 1999-12-15 Lichtbogenlöschkammer mit Wänden aus Verbundstoff, und mit solcher Kammer versehenes Schaltgerät Expired - Lifetime EP1020882B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9900344A FR2788372B1 (fr) 1999-01-11 1999-01-11 Chambre d'extinction d'arc dont les parois laterales sont en materiau composite, et appareillage de coupure comportant une telle chambre
FR9900344 1999-01-11

Publications (2)

Publication Number Publication Date
EP1020882A1 true EP1020882A1 (de) 2000-07-19
EP1020882B1 EP1020882B1 (de) 2006-05-24

Family

ID=9540857

Family Applications (1)

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EP99410175A Expired - Lifetime EP1020882B1 (de) 1999-01-11 1999-12-15 Lichtbogenlöschkammer mit Wänden aus Verbundstoff, und mit solcher Kammer versehenes Schaltgerät

Country Status (5)

Country Link
US (1) US6218636B1 (de)
EP (1) EP1020882B1 (de)
JP (1) JP4312327B2 (de)
DE (1) DE69931457T2 (de)
FR (1) FR2788372B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1672656A2 (de) 2004-12-14 2006-06-21 EATON Corporation Lichtbogenlöschkammeranordnung
EP1986206A1 (de) * 2007-04-27 2008-10-29 Eaton Corporation Elektrische Schaltvorrichtung sowie Lichtbogenbaugruppe und Schornstein dafür
EP3236482A1 (de) 2016-04-21 2017-10-25 Schneider Electric Industries SAS Schutzschalter mit unterbrechung in der luft, der eine kammer mit verbesserter lichtbogenunterbrechung umfasst

Families Citing this family (16)

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Publication number Priority date Publication date Assignee Title
US6570116B2 (en) 2001-08-16 2003-05-27 Square D Company Current carrying assembly for a circuit breaker
US7176771B2 (en) 2001-08-24 2007-02-13 Square D Company Circuit breaker filter assembly
DE10331822A1 (de) * 2003-07-14 2005-02-10 Siemens Ag Schiffs-Leistungsschalter sowie einen solchen enthaltende Schiffs-Energieversorgungs- und -verteilungsanlage
US20060006144A1 (en) * 2004-07-09 2006-01-12 S & C Electric Co. Arc-extinguishing composition and articles manufactured therefrom
US20080237194A1 (en) * 2004-07-09 2008-10-02 S & C Electric Co. Metal-hydrate containing arc-extinguishing compositions and methods
US20080061037A1 (en) * 2006-09-07 2008-03-13 Thangavelu Asokan Composite arc suppression device
US20080073326A1 (en) * 2006-09-21 2008-03-27 Thangavelu Asokan Ablative Circuit Interruption Device
FR2959348A1 (fr) * 2010-04-27 2011-10-28 Schneider Electric Ind Sas Systeme a clapet pour chambre de coupure, et disjoncteur le comprenant
DE102010026512B3 (de) * 2010-07-08 2011-12-01 Abb Ag Installationsschaltgerät mit Gehäuse aus Thermoplast oder Duroplast sowie Verfahren zu dessen Herstellung
DE112014003951T5 (de) * 2013-08-29 2016-06-02 Panasonic intellectual property Management co., Ltd Kontaktvorrichtung
US9153399B2 (en) 2013-11-15 2015-10-06 Eaton Corporation ARC baffling device
FR3045205B1 (fr) 2015-12-10 2018-01-26 Schneider Electric Industries Sas Disjoncteur multipolaire a coupure dans l'air comportant un dispositif de filtrage du gaz de coupure ameliore
CN105761974B (zh) * 2016-04-06 2018-01-09 中国船舶重工集团公司第七一二研究所 一种栅片结构灭弧室
FR3105566B1 (fr) * 2019-12-18 2022-04-08 Schneider Electric Ind Sas Système de protection électrique multipolaire et installation électrique comprenant un tel système
CN111301987B (zh) * 2020-03-06 2021-06-29 天津津荣天宇精密机械股份有限公司 一种自动破拆机及其工作方法
KR102542380B1 (ko) * 2020-03-13 2023-06-12 엘에스일렉트릭(주) 아크 소호부 및 이를 포함하는 기중 차단기

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US3956447A (en) * 1975-06-16 1976-05-11 The United States Of America As Represented By The Secretary Of The Army Method of making deep drawn, laminated articles
US4733032A (en) * 1987-06-01 1988-03-22 General Electric Company Electric circuit breaker arc chute composition
US4821447A (en) * 1987-05-11 1989-04-18 Ryobi Ltd. Fishing rod and method of manufacturing same
US5618858A (en) * 1993-07-05 1997-04-08 Siemens Aktiengesellschaft Polymer material

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IT1264164B1 (it) * 1993-04-21 1996-09-17 Sace Spa Interruttore di bassa tensione in scatola isolante
TW293130B (de) * 1994-03-10 1996-12-11 Mitsubishi Electric Corp

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
US3956447A (en) * 1975-06-16 1976-05-11 The United States Of America As Represented By The Secretary Of The Army Method of making deep drawn, laminated articles
US4821447A (en) * 1987-05-11 1989-04-18 Ryobi Ltd. Fishing rod and method of manufacturing same
US4733032A (en) * 1987-06-01 1988-03-22 General Electric Company Electric circuit breaker arc chute composition
US5618858A (en) * 1993-07-05 1997-04-08 Siemens Aktiengesellschaft Polymer material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1672656A2 (de) 2004-12-14 2006-06-21 EATON Corporation Lichtbogenlöschkammeranordnung
EP1986206A1 (de) * 2007-04-27 2008-10-29 Eaton Corporation Elektrische Schaltvorrichtung sowie Lichtbogenbaugruppe und Schornstein dafür
EP3236482A1 (de) 2016-04-21 2017-10-25 Schneider Electric Industries SAS Schutzschalter mit unterbrechung in der luft, der eine kammer mit verbesserter lichtbogenunterbrechung umfasst
FR3050566A1 (fr) * 2016-04-21 2017-10-27 Schneider Electric Ind Sas Disjoncteur a coupure dans l'air presentant une chambre de coupure d'arc electrique amelioree
US10192700B2 (en) 2016-04-21 2019-01-29 Schneider Electric Industries Sas Air circuit breaker having an improved electric arc quenching chamber

Also Published As

Publication number Publication date
EP1020882B1 (de) 2006-05-24
JP2000207980A (ja) 2000-07-28
FR2788372A1 (fr) 2000-07-13
DE69931457D1 (de) 2006-06-29
US6218636B1 (en) 2001-04-17
DE69931457T2 (de) 2006-11-16
FR2788372B1 (fr) 2001-02-23
JP4312327B2 (ja) 2009-08-12

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