EP0817224A1 - Dispositif de coupure pour un disjoncteur électrique à forts calibres - Google Patents
Dispositif de coupure pour un disjoncteur électrique à forts calibres Download PDFInfo
- Publication number
- EP0817224A1 EP0817224A1 EP97410070A EP97410070A EP0817224A1 EP 0817224 A1 EP0817224 A1 EP 0817224A1 EP 97410070 A EP97410070 A EP 97410070A EP 97410070 A EP97410070 A EP 97410070A EP 0817224 A1 EP0817224 A1 EP 0817224A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compartment
- arc
- cut
- bulb
- shells
- 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
Links
Images
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
- H01H9/346—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 extinguishing chamber of arc is placed directly in the plastic case of the circuit breaker, and the chamber arc formation consists of a pair of guide cheeks made of material insulator, positioned parallel to the large side faces of the housing, and extending from the contact separation zone to the deionization plates of the extinguishing chamber.
- the chamber arc formation consists of a pair of guide cheeks made of material insulator, positioned parallel to the large side faces of the housing, and extending from the contact separation zone to the deionization plates of the extinguishing chamber.
- ceramic guide cheeks or caps made of gas-generating material inserted on ferromagnetic studs.
- the performance of such circuit breakers have cut-off limits if the overall dimensions of the case must be kept.
- Document FR-A- 2682531 mentions a low-power multipole industrial circuit breaker voltage making use of cut-off bulbs at the different poles.
- Each bulb is formed by a box containing two extinguishing chambers, and a bridge double-break rotary contact mounted floating on a section of rotary bar extending to the center of the box.
- the breaking performance are obtained by putting two arcs in series, and using an energy mechanism important.
- the object of the invention is to provide a cut-out device for a circuit breaker strong calibers, and with reduced overall dimensions, having high cutting performance.
- the breaking device is characterized in that the two shells of the bulb are attached to each other to delimit a subdivided internal space in a plurality of compartments distributed at different levels for a gradual increase in the arc passage sections towards the chamber extinction, the first compartment in the vicinity of the contacts being arranged at first level, causing a rolling effect of the arc drawn at the start of the race opening of the movable contact to favor the switching of the arc on the horns of extended guide in the second compartment, which is located second level with a width greater than that of the first compartment.
- the end faces of the shells defining the first compartment each have an extension located on the first level, and protruding into the second compartment so as to form a baffle extending transversely between the guide horns.
- a first series of holes for decompression is arranged in each shell in the vicinity of the separation notch of the second compartment and the third compartment to create a depression at the entrance to the extinguishing chamber.
- Fresh gas is drawn in from the outside of the bulb when the bow is in the second compartment.
- the use of a cut-off bulb requires that the third compartment has a gas exhaust port to the housing volume of the mechanism.
- the exhaust port is located at the top of the chamber extinction, and in the vicinity of the end of the upper arc horn.
- the third compartment is provided a second series of holes communicating with a drainage channel provided at the rear of the extinguishing chamber, and being in connection with said orifice exhaust.
- the loop effect is also reinforced thanks to an insulating screen intended to cover the portion of the conductor located opposite the movable contact arm, and extending to the vicinity of the fixed contact.
- the displacement of the arc at the start of the opening stroke can be accelerated by the use of ferromagnetic elements arranged on the external walls of the bulb.
- a cut-off device 10 of a heavy-duty electric circuit breaker includes a contact arm 12 mounted at pivoting on an axis 14 between a closed position and a position opening hours.
- the contact arm 12 is coupled to a control mechanism (not shown), and extends inside an air gap formed in an actuator electromagnetic (not shown), as described in document EP-A 635 859 of the plaintiff.
- the contact arm 12 carries opposite the axis 14 a contact piece, called by the following mobile contact 17, which cooperates in the closed position with a fixed contact 18.
- the two separable contacts 17, 18 are arranged inside a bulb 20 of break also containing an arc extinguishing chamber 22 formed by a stacking of deionization sheets of the electric arc.
- the electromagnetic actuator is positioned in an orifice 16 of the bulb 20.
- the fixed contact 18 is carried by a loop-shaped conductor 24, crossing the magnetic circuit of the actuator 16, and connected to a pad 26 in connection with a connection terminal (not shown).
- a conductor extension 24 downstream of the fixed contact 18 is shaped according to an upper arc horn 28 framing the entrance to the arc extinguishing chamber 22 in cooperation with the arc horn lower 30.
- the movable contact arm 12 is connected by a braid to the other terminal connection (not shown) possibly via a bimetallic strip a thermal release.
- the cut-off bulb 20 of each pole is described in detail with reference to the figures 3 to 7, and is composed of a box with two shells 20A, 20B made of plastic material molded, housed inside the circuit breaker box.
- the two shells 20A, 20B are joined together to confine an internal space 32, which is subdivided into several compartments 34, 36, 38 stepped on three levels A, B, C.
- the first compartment 34 is located in the vicinity of the contacts 17, 18 and has a very narrow width L1 containment zone, delimited between the end faces 35.37 of shells 20A, 20B.
- the second intermediate compartment 36 has a smaller containment zone of width L2 greater than that L1 of the first compartment 34, but less than the width L3 of the third compartment 38 enclosing the arc extinguishing chamber 22.
- the cross section is maximum in the third compartment 38, the width L3 corresponding substantially to the width of the deionization plates, which extend parallel to the bottom of chamber 22 and to the terminal portion of the lower arc horn 30.
- each end face 35.37 is provided a extension 40A, 40B which extends into the middle zone of the second compartment 36 by forming at least one baffle whose depth corresponds to the difference of levels A and B.
- Each extension 40A, 40B comprises on the outside of the shell 20A, 20B, a groove 42A, 42B intended to receive an element ferromagnetic integral with the cylinder head of the actuator.
- a first series of decompression holes 44 is provided in each shell 20A, 20B, extending to the entrance to the third compartment 38 between the horns arc 28.30.
- the notch 46 for separation between the second compartment 36 and the third compartment 38 of each shell 20A, 20B comprises a bevelled surface 48 so as to constitute a divergent intended for accelerate the speed of movement of the arc towards the extinguishing chamber 22.
- a second series of holes 50 communicates with a channel provided at the rear of the extinguishing chamber 22 in the third compartment 38.
- a groove 52A, 52B lateral decompression is located in each shell 20A, 20B at the level of the middle zone of the extinguishing chamber 22.
- the insulating bulb 20 is equipped in addition with another orifice 54 for exhausting the gas to the housing volume of the mechanism.
- Port 54 is located at the upper third compartment 38, and near the end of the horn upper arc 28. It is in communication with the discharge channel 51.
- the shell 20A is provided with an insulating screen 56 intended to cover the portion of the conductor 24 located opposite the movable contact arm 12, and extending to vicinity of the fixed contact 18.
- the presence of the screen 56 re-establishes a loop effect, and promotes switching of the arc on the guide horns 28, 30.
- the migration of arc roots to the second compartment 36 of level B is fast, while the central part of the arch remains laminated by the presence of extensions 40 located at level A.
- the displacement of the arc towards the level C of the extinguishing chamber 22 can also be accelerated by means magnetic becoming active following the loop effect reinforced by the screen 56, and the presence of ferromagnetic cheeks of shells 20A, 20B, and elements ferromagnetic inserted in the grooves 42A, 42B.
- the arrangement of the first series of holes 44 also creates a depression at the entrance to the third compartment 38, allowing fresh gas to be drawn in depending on the position of the arc.
- the arrangement of the bulb causes at all times an overpressure upstream of the arc, and a depression downstream of the arc, so as to favor rapid movement towards the extinguishing chamber.
- the arc moves along the horns 28.30, and is propelled on the deionization plates from the extinguishing chamber 22, where it cools quickly and turns off.
- the recycling gases are effected through the lateral grooves 52A, 52B.
- the evacuation of gases from cut-off takes place through the exhaust port 54 towards the internal volume of the mechanism (arrow F1 in FIG. 2C), and downwards (arrow F2) coming from channel 51.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
Description
- une ampoule de coupure unipolaire formée par une boíte à deux coquilles en matière plastique moulée logée dans le boítier du disjoncteur,
- un contact fixe coopérant avec un contact mobile pour tirer un arc à l'intérieur de l'ampoule lors de l'ouverture du disjoncteur suite à un défaut,
- et une chambre d'extinction d'arc logée à l'intérieur de l'ampoule, et encadrée par une paire de cornes de guidage de l'arc.
- la figure 1 est une vue en élévation du dispositif de coupure selon l'invention, les contacts étant représentés en position de fermeture, et la coquille supérieure de l'ampoule étant enlevée;
- la figure 2A montre une vue identique de la figure 1, après enlèvement de la chambre d'extinction d'arc;
- les figures 2B et 2C sont des vues identiques de la figure 1, lors de la phase de séparation des contacts, et en fin d'ouverture du contact mobile;
- la figure 3 est une vue en perspective de la partie interne d'une coquille de l'ampoule;
- la figure 4 est une vue identique de la figure 3 après retournement de la coquille montrant le côté externe de l'ampoule;
- les figures 5, 6 et 7 sont des vues en coupe respectivement selon les lignes 5-5, 6-6 et 7-7 de la figure 2A.
Claims (10)
- Dispositif de coupure pour un disjoncteur électrique à boítier moulé et à forts calibres, comportant:une ampoule (20) de coupure unipolaire formée par une boíte à deux coquilles (20A,20B) en matière plastique moulée, logée dans le boítier du disjoncteur,un contact fixe (18) coopérant avec un contact mobile (17) pour tirer un arc à l'intérieur de l'ampoule (20) lors de l'ouverture du disjoncteur suite à un défaut, -et une chambre d'extinction d'arc (22) logée à l'intérieur de l'ampoule (20), et encadrée par une paire de cornes (28,30) de guidage de l'arc,
- Dispositif de coupure selon la revendication 1, caractérisé en ce que les faces terminales (35,37) des coquilles (20A, 20B) délimitant le premier compartiment (34), comportent chacune une extension (40A,40B) située au premier niveau (A), et faisant saillie dans le deuxième compartiment (36) de manière à former une chicane s'étendant transversalement entre les cornes de guidage (28,30).
- Dispositif de coupure selon la revendication 1 ou 2, caractérisé en ce que la chambre d'extinction d'arc (22) est disposée dans le troisième compartiment (38) ayant une largeur (L3) supérieure à celle (L2) du deuxième compartiment (36), et qu'une première série de trous (44) de décompression est agencée dans chaque coquille (20A,20B) au voisinage du cran (46) de séparation du deuxième compartiment (36) et du troisième compartiment (38).
- Dispositif de coupure selon la revendication 3, caractérisé en ce que le cran (46) de chaque coquille (20A, 20B) est équipée d'une surface biseautée (48) pour constituer un divergent avant la première série de trous (44).
- Dispositif de coupure selon la revendication 1 ou 3, caractérisé en ce que le troisième compartiment (38) comporte un orifice (54) d'échappement des gaz vers le volume de logement du mécanisme.
- Dispositif de coupure selon la revendication 5, caractérisé en ce que l'orifice (54) d'échappement est situé à la partie supérieure de la chambre d'extinction (22), et au voisinage de l'extrémité de la corne d'arc supérieure (28).
- Dispositif de coupure selon la revendication 5, caractérisé en ce que le troisième compartiment (38) est doté d'une deuxième série de trous (50) communiquant avec un canal d'évacuation (51) prévu à l'arrière de la chambre d'extinction (22), et se trouvant en liaison avec ledit orifice (54) d'échappement.
- Dispositif de coupure selon la revendication 1, caractérisé en ce que le contact fixe (18) est porté par un conducteur (24) en forme de boucle se prolongeant par la corne d'arc supérieure (28), et que l'une des coquilles (20A) est équipée d'un écran (56) isolant destiné à recouvrir la portion du conducteur (24) se trouvant en regard du bras de contact (12) mobile, et s'étendant jusqu'au voisinage du contact fixe (18).
- Dispositif de coupure selon la revendication 2, caractérisé en ce que chaque extension (40A, 40B) comporte à l'extérieur de la coquille (20A, 20B) correspondante, une rainure (42A,42B) dans laquelle peut être inséré un élément ferromagnétique, notamment un actionneur électromagnétique associé au bras de contact (12) mobile.
- Dispositif de coupure selon la revendication 2, caractérisé en ce que des joues en matériau ferromagnétique peuvent être positionnées à l'extérieur de l'ampoule (20) sur les faces terminales (35,37) des coquilles (20A, 20B).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9608638 | 1996-07-05 | ||
FR9608638A FR2750795B1 (fr) | 1996-07-05 | 1996-07-05 | Dispositif de coupure pour un disjoncteur electrique a forts calibres |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0817224A1 true EP0817224A1 (fr) | 1998-01-07 |
EP0817224B1 EP0817224B1 (fr) | 2002-04-03 |
Family
ID=9493920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19970410070 Expired - Lifetime EP0817224B1 (fr) | 1996-07-05 | 1997-07-03 | Dispositif de coupure pour un disjoncteur électrique à forts calibres |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0817224B1 (fr) |
CN (1) | CN1067487C (fr) |
DE (1) | DE69711504T2 (fr) |
EA (1) | EA000195B1 (fr) |
ES (1) | ES2175313T3 (fr) |
FR (1) | FR2750795B1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1191560A1 (fr) * | 2000-09-25 | 2002-03-27 | Hager Electro S.A. | Dispositif de soufflage gazeux d'arc électrique dans un appareil électrique modulaire |
CN106898530A (zh) * | 2015-09-16 | 2017-06-27 | 西门子公司 | 灭弧器和安全配电设备 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4637722B2 (ja) * | 2005-11-08 | 2011-02-23 | 三菱電機株式会社 | 回路遮断器 |
CZ298548B6 (cs) * | 2006-02-01 | 2007-10-31 | Oez, S. R. O. | Elektroizolacní kryt nosice pohyblivého kontaktu elektrického prístroje, zvlášte u výkonového jistice |
CN100446151C (zh) * | 2006-09-06 | 2008-12-24 | 大全集团有限公司 | 模块式电流断路器 |
US20120175348A1 (en) * | 2009-09-18 | 2012-07-12 | Schneider Electric IndustriesSAS | Single-Pole Breaking Unit Comprising a Rotary Contact Bridge, Switchgear Device Comprising Such a Unit and Circuit Breaker Comprising Such a Device |
BR112012006182B1 (pt) * | 2009-09-18 | 2019-10-22 | Schneider Electric Ind Sas | dispositivo de corte tendo pelo menos um bloco de corte unipolar, comportando uma ponte de contatos e disjuntor, comportando esse dispositivo |
CN101894715B (zh) * | 2010-07-08 | 2012-06-13 | 江苏辉能电气有限公司 | 一种低压断路器的灭弧室 |
CN101986415B (zh) * | 2010-11-11 | 2012-12-26 | 江苏辉能电气有限公司 | 一种塑壳低压断路器的灭弧室 |
DE102012214826A1 (de) | 2012-08-21 | 2014-02-27 | Siemens Aktiengesellschaft | Schaltvorrichtung |
CN103021706B (zh) * | 2012-12-28 | 2015-06-17 | 常熟开关制造有限公司(原常熟开关厂) | 具有电弧隔离套的电开关装置 |
CN109616390B (zh) * | 2018-12-28 | 2021-10-26 | 天津京人电器有限公司 | 一种多极开关 |
CN116230466A (zh) * | 2023-04-07 | 2023-06-06 | 浙江人民电器有限公司 | 一种大电流高分断插入式断路器 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3632926A (en) * | 1970-04-20 | 1972-01-04 | Gen Electric | Current-limiting circuit breaker having arc extinguishing means which includes improved arc initiation and extinguishing chamber construction |
DE3311052A1 (de) * | 1983-03-25 | 1984-09-27 | Siemens AG, 1000 Berlin und 8000 München | Selbstschalter, insbesondere leitungsschutzschalter |
EP0183145A2 (fr) * | 1984-11-27 | 1986-06-04 | Asea Brown Boveri Aktiengesellschaft | Appareil de commutation électrique, notamment disjoncteur de puissance et de protection |
DE3619241A1 (de) * | 1986-06-07 | 1987-12-10 | Kloeckner Moeller Elektrizit | Loescheinrichtung fuer einen leitungsschutzschalter |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2716619C2 (de) * | 1977-04-15 | 1979-05-03 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Strombegrenzender Leitungsschutzschalter mit Maßnahmen zur Erhöhung der Laufgeschwindigkeit des Schaltlichtbogeits |
FR2517465B1 (fr) * | 1981-11-27 | 1986-05-02 | Merlin Gerin | Disjoncteur miniature a deux chambres de coupure accolees |
JPS58169732A (ja) * | 1982-03-31 | 1983-10-06 | 松下電工株式会社 | 回路遮断器 |
SU1767570A1 (ru) * | 1990-08-06 | 1992-10-07 | Всесоюзный научно-исследовательский, проектно-конструкторский и технологический институт низковольтного аппаратостроения | Автоматический выключатель |
-
1996
- 1996-07-05 FR FR9608638A patent/FR2750795B1/fr not_active Expired - Fee Related
-
1997
- 1997-07-03 ES ES97410070T patent/ES2175313T3/es not_active Expired - Lifetime
- 1997-07-03 EP EP19970410070 patent/EP0817224B1/fr not_active Expired - Lifetime
- 1997-07-03 DE DE1997611504 patent/DE69711504T2/de not_active Expired - Fee Related
- 1997-07-04 EA EA199700072A patent/EA000195B1/ru not_active IP Right Cessation
- 1997-07-05 CN CN97117122A patent/CN1067487C/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3632926A (en) * | 1970-04-20 | 1972-01-04 | Gen Electric | Current-limiting circuit breaker having arc extinguishing means which includes improved arc initiation and extinguishing chamber construction |
DE3311052A1 (de) * | 1983-03-25 | 1984-09-27 | Siemens AG, 1000 Berlin und 8000 München | Selbstschalter, insbesondere leitungsschutzschalter |
EP0183145A2 (fr) * | 1984-11-27 | 1986-06-04 | Asea Brown Boveri Aktiengesellschaft | Appareil de commutation électrique, notamment disjoncteur de puissance et de protection |
DE3619241A1 (de) * | 1986-06-07 | 1987-12-10 | Kloeckner Moeller Elektrizit | Loescheinrichtung fuer einen leitungsschutzschalter |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1191560A1 (fr) * | 2000-09-25 | 2002-03-27 | Hager Electro S.A. | Dispositif de soufflage gazeux d'arc électrique dans un appareil électrique modulaire |
CN106898530A (zh) * | 2015-09-16 | 2017-06-27 | 西门子公司 | 灭弧器和安全配电设备 |
CN106898530B (zh) * | 2015-09-16 | 2020-01-17 | 西门子公司 | 灭弧器和安全配电设备 |
Also Published As
Publication number | Publication date |
---|---|
CN1067487C (zh) | 2001-06-20 |
EA000195B1 (ru) | 1998-12-24 |
CN1174391A (zh) | 1998-02-25 |
EP0817224B1 (fr) | 2002-04-03 |
ES2175313T3 (es) | 2002-11-16 |
FR2750795B1 (fr) | 1998-09-25 |
FR2750795A1 (fr) | 1998-01-09 |
DE69711504T2 (de) | 2002-09-26 |
EA199700072A1 (ru) | 1998-02-26 |
DE69711504D1 (de) | 2002-05-08 |
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