EP0752153A1 - Lichtbogenlöschkammer mit drei barrieren für den durchtritt von lichtbogengasen - Google Patents
Lichtbogenlöschkammer mit drei barrieren für den durchtritt von lichtbogengasenInfo
- Publication number
- EP0752153A1 EP0752153A1 EP95913022A EP95913022A EP0752153A1 EP 0752153 A1 EP0752153 A1 EP 0752153A1 EP 95913022 A EP95913022 A EP 95913022A EP 95913022 A EP95913022 A EP 95913022A EP 0752153 A1 EP0752153 A1 EP 0752153A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- barrier
- webs
- arc
- quenching
- plates
- 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
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
- H01H9/342—Venting arrangements for arc chutes
Definitions
- Arc quenching chamber with three barriers for the passage of arc gases
- the invention relates to an arc quenching chamber for a circuit breaker with a chamber housing, in the chamber housing arranged arc guide rails and with mutually spaced quenching plates and with a three-barrier cooling arrangement arranged above the quenching plates for emerging arc gases, the first barrier directly above the quenching plates and the second barrier is arranged at a distance from the first barrier and wherein the first and the second barrier are directed parallel to end faces of the quenching plates
- An arc quenching chamber of the aforementioned type is known from US-A-3 005 892.
- the barriers are formed by slotted or perforated plate-shaped insert pieces in the chamber housing. These components are exposed to very high stresses during the operation of the circuit breaker. With regard to a sufficient lifespan of the parts, therefore, only a limited cooling effect can be achieved. This affects the safety distance to earthed components, which must be observed when installing the circuit breaker in a switchgear in order to avoid an electrical flashover due to the escape of hot ionized gases from the arc quenching chamber.
- the invention has for its object to improve the cooling effect of the arrangement of barriers with the smallest possible dimensions and long life so that the Exit side of the arc quenching chamber requires only a minimal safety distance from earthed components.
- the first barrier is formed by webs of the chamber housing, which are arranged in double division of the extinguishing plates and serve as abutments for one extinguishing plate,
- the second barrier is also formed by webs of the chamber housing, which are arranged offset from the webs of the first barrier by the pitch of the quenching plates and
- the width and height of the webs correspond approximately to the pitch of the fire extinguishing plates.
- the web arrangement can be designed to be substantially more resistant than slotted or perforated plate-shaped components and that the entire arc quenching chamber can therefore be designed for a higher pressure of arc gases.
- the invention is therefore particularly suitable for the construction of compact circuit breakers with high switching capacity.
- An arrangement of webs above the quenching plates of an arc quenching chamber in such a way that every second of the quenching plates rests on a web is known per se from DE-A-35 41 514.
- the webs also form an outlet grille for arc gases. If these are to be cooled to such an extent that only a very small or no significant distance from earthed components can be maintained, the normal arc quenching chamber is provided with an attachment piece, the entry side of which is above the web arrangement.
- an arc quenching chamber is created by the invention, which does not require an additional attachment piece and, despite its small dimensions, requires only a minimal distance from earthed components.
- the cooling chamber located between the second and the third barrier is designed as a mixing chamber, into which the arc gases pass not only through the first and the second barrier, but also laterally past it can occur.
- an arc guide rail and the subsequent quenching plate are covered by an end web, in such a way that arc gases. n
- the cooling chamber located between the second and the third barrier can only enter along the webs of the second barrier.
- the webs in the design given at the beginning have the property of exerting a stronger directivity on the arcs 3e than slotted plates are capable of.
- This property can be further improved in that the webs of the first and second barriers have an approximately square cross-sectional shape and that the distance between the barriers is 0.1 to 0.5 times the height of the webs.
- This arrangement forces the arc gases to flow through the first and the second barrier twice, changing the direction of 90 °, partial flows of the gases being directed against one another above the webs of the first barrier and thereby braked. The gases then enter the cooling chamber with intensive vortex formation and expansion and thereby largely lose their ionization. At the exit side of the third barrier are therefore the temperature and the
- the degree of ionization of the gases is reduced so much that only a small safety distance from earthed parts has to be observed.
- Extinguishing sheets receiving shaft body and an end body closing the shaft body at the top, B. has become known from DE-C-29 05 854, the first, the second and the third barrier can be part of the end body.
- This design proves to be favorable for the producibility of the web arrangement with great strength.
- every second of the quenching plates lies against a web of the first barrier.
- a separate fastening device for the respective intermediate baffle plates can be dispensed with in that the webs of the first barrier are connected by an edge-side transverse web which forms an abutment for every second baffle plate which does not abut one of the webs of the first barrier.
- the exit openings of the third barrier can be slit-like and arranged parallel to the webs of the first and the second barrier, but offset relative to them, in an end wall of the end body.
- the number and arrangement of these outlet openings can influence the dwell time of the arc gases in the cooling chamber and their flow rate. This can be done in particular in that the outlet openings are arranged in a division that differs from the webs of the first and the second barrier.
- the end body can be produced as a uniform hollow body from a thermosetting plastic.
- the arc-quenching chamber according to the invention therefore has no additional metal parts apart from the quenching plates, which are to be produced and assembled separately.
- Figure 1 shows an arc quenching chamber of a low-voltage circuit breaker with a movable switch contact in section.
- FIG. 2 shows a top view of the arc quenching chamber according to FIG. 1.
- FIG. 3 An end piece of the arc quenching chamber according to FIGS. 1 and 2 is shown in FIG. 3 with a view of the underside facing the interior.
- Figures 4 and 5 are sections IV-IV and V-V in Figure 3.
- the arc quenching chamber 1 according to FIG. 1 is part of a low-voltage circuit breaker for use up to 1000 V and a switching capacity of up to approximately 100,000 A.
- the structure of the circuit breaker is otherwise not essential to the invention, it is only an upper one Connection rail 2 with a fixed contact piece 3 and an associated movable contact lever 4 with an arcing horn 5 are shown.
- the switch-on position is extended, the switch-off position of the contact lever 4 is indicated by dash-dotted lines.
- the arc quenching chamber 1 has a two-part chamber housing 6 with a lower shaft body 7 and an end body 8 closing this at the top. Extinguishing plates 10 are arranged in the shaft body 7 at a mutual distance. This quenching plate arrangement is completed on both sides by an arc guide rail 11 or 12, the left-hand arc guide rail 11 being at a short distance from a stationary arc horn 13 and the right-hand arc guide rail 12 being angled at the lower end in such a way that the movable contact lever with its arc horn 5 in the Switch-off position at the end of the bend.
- the quenching plates 10 end in a plane near the upper end of the shaft body 7 and are secured against displacement in the longitudinal direction by the end body 8.
- a web 15 of the end body 8 faces an end face 14 of every second quenching plate 10.
- a left end web 16 and a right end web 17 are wider than the webs 15, in such a way that the last baffle plate 10 and the subsequent arc guide rail 11 or 12 abut the end web 16 or 17.
- the webs 15 in connection with the end webs 16 and 17 form a first barrier 20 for arcing gases which arise during switching and which have to be cooled and ionized before exiting into the free environment.
- a second barrier 22 formed by webs 21.
- the webs 21 are arranged displaced by a division unit of the extinguishing plates 10, so that every second extinguishing plate is spaced apart by a web 21.
- the cross-sectional shape of the webs 15 and 21 has the same and approximately square shape according to FIGS. 1 and 4.
- the width b and the height h of the webs 15 and 21 correspond approximately to the pitch t of the extinguishing plates 10.
- a third barrier 24 is formed by an end wall 23 of the end body 8.
- the end wall 23 contains the outlet openings 26 (FIG. 2) through which the cooled and deionized arc gases leave the arc quenching chamber 1.
- the first and second barriers 20 and 22 are only a small mutual distance d (FIG. 4), which is approximately a quarter of the width b and the height h of the webs 15 and 21, between the second and the third Barrier 22 and 24, a larger distance is provided, through which a cooling chamber 25 is formed.
- the outlet openings 26 of the third barrier 24 are elongated and arranged parallel to the webs 15 and 21 of the first and second barriers 20 and 22.
- FIG. 3 shows in greater detail, the webs 15 of the first barrier 20 are connected to one another at the edge by a cross web 27. As a result, a contact surface is also formed for those quenching plates 10 which do not abut the webs 15 of the first barrier 20. Furthermore, when comparing FIGS. 2 and 3, it can be seen that the outlet openings 26 are shorter than the openings formed by the webs 15 and 21. The pitch of the outlet openings 26 is also chosen to deviate from the pitch t (FIG. 1) of the webs 15 and 21. This avoids that an intermediate space of the webs 21 is just opposite an outlet opening 26.
- the end body 8 has projecting edge pieces 30, 31 and 32 and 33 on all sides for resting on the front end of the shaft body 7. Through holes 34 in the corners of the edge pieces mentioned are for connecting the end body 8 and The shaft body 7 is provided by means of screws 35.
- the contact lever 4 is moved from the position shown in solid lines to the position shown in broken lines.
- the resulting switching arc is transferred from the fixed switching piece 3 and the arcing horn 5 of the contact lever 4 to the arc guide rails 11 and 12. Due to magnetic and thermal buoyancy forces
- Switching arc then into the quenching plate arrangement (quenching plates 10, Figure 1) and is split there into a number of partial arcs corresponding to the number of quenching plates 10.
- the arcing gases that occur until the switching arc is extinguished escape through the arrangement of barriers 20, 22 and 24 to the outside.
- the webs 15 of the first barrier 20 practice because of their relatively large height and their parallel flanks have a directivity on the gas flow.
- the partial flows of the gas then strike the lower surfaces of the webs 21 of the barrier 22 and are forced to deflect by approximately 90 ° due to the small distance d between the webs 15 and 21.
- the residence time of the arc gases in the cooling chamber 25 can be influenced by the dimensioning of the outlet openings 26.
- the arrangement described only takes up a relatively small part of the total height of the arc quenching chamber 1 no conductive parts such as wire mesh, mesh made of expanded metal or similar elements are required to achieve the desired cooling and deionization of the arc gases. Therefore, the described arc quenching chamber 1 is also characterized by a high level of security against electrical flashovers on the outlet side of the quenching plates 10. The safety distance to earthed components is reduced to a small amount of about 20 - 60 mm.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Circuit Breakers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4410108A DE4410108C2 (de) | 1994-03-21 | 1994-03-21 | Lichtbogenlöschkammer mit drei Barrieren für den Durchtritt von Lichtbogengasen |
DE4410108 | 1994-03-21 | ||
PCT/DE1995/000347 WO1995026033A1 (de) | 1994-03-21 | 1995-03-10 | Lichtbogenlöschkammer mit drei barrieren für den durchtritt von lichtbogengasen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0752153A1 true EP0752153A1 (de) | 1997-01-08 |
EP0752153B1 EP0752153B1 (de) | 1998-08-12 |
EP0752153B2 EP0752153B2 (de) | 2002-09-25 |
Family
ID=6513662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95913022A Expired - Lifetime EP0752153B2 (de) | 1994-03-21 | 1995-03-10 | Lichtbogenlöschkammer mit drei barrieren für den durchtritt von lichtbogengasen |
Country Status (5)
Country | Link |
---|---|
US (1) | US5756951A (de) |
EP (1) | EP0752153B2 (de) |
JP (1) | JPH09510574A (de) |
DE (2) | DE4410108C2 (de) |
WO (1) | WO1995026033A1 (de) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5470701A (en) * | 1993-02-24 | 1995-11-28 | The Regents Of The University Of California | Method for determining favorable prognosis in an HIV positive subject using HLA-DR+ /CD38- CD8bright cells |
DE29612636U1 (de) * | 1996-07-15 | 1997-08-14 | Siemens AG, 80333 München | Lichtbogenlöschkammer für Niederspannungs-Leistungsschalter |
DE29617358U1 (de) * | 1996-09-24 | 1998-01-29 | Siemens AG, 80333 München | Lichtbogenlöschkammer für Niederspannungs-Leistungsschalter |
US5861596A (en) * | 1997-04-01 | 1999-01-19 | Eaton Corporation | Dual baffle apparatus for electrical switching device |
DE29720715U1 (de) * | 1997-11-21 | 1998-01-22 | Siemens AG, 80333 München | Schaltgerät mit Lichtbogen-Löscheinrichtung |
JP3411206B2 (ja) * | 1997-12-26 | 2003-05-26 | 三菱電機株式会社 | 接点開閉機器の消弧装置 |
DE19920042C1 (de) | 1999-04-23 | 2001-01-18 | Siemens Ag | Schaltgasdämpfer für Niederspannungs-Leistungsschalter |
DE10033936A1 (de) * | 2000-07-05 | 2002-01-17 | Siemens Ag | Niederspannungs-Leistungsschalter mit einer Lichtbogenlöschkammer und mit einem Schaltgasdämpfer |
DE10036370B4 (de) * | 2000-07-18 | 2009-07-09 | Siemens Ag | Lichtbogenlöscheinrichtung mit einem Aufsatz für Niederspannungs-Schaltgeräte |
DE10049726A1 (de) * | 2000-09-29 | 2002-04-11 | Siemens Ag | Kammerdeckelbefestigung für Lichtbogenlöschkammern für Niederspannungsschaltgeräte |
FR2823904B1 (fr) * | 2001-04-19 | 2003-06-06 | Schneider Electric Ind Sa | Diffuseur monobloc pour un appareillage electrique de coupure |
US7176771B2 (en) | 2001-08-24 | 2007-02-13 | Square D Company | Circuit breaker filter assembly |
DE10149019C1 (de) * | 2001-09-28 | 2003-06-18 | Siemens Ag | Lichtbogenlöscheinrichtung für Niederspannungs-Schaltgeräte |
DE102004001943A1 (de) * | 2004-01-14 | 2005-08-04 | Abb Patent Gmbh | Elektrisches Schaltgerät |
DE102004037294A1 (de) * | 2004-07-27 | 2006-03-23 | Siemens Ag | Lichtbogen-Löscheinrichtung sowie Niederspannungs-Leistungsschalter mit einer Leichtbogen-Löscheinrichtung |
NL1027342C2 (nl) * | 2004-10-26 | 2006-04-27 | Eaton Electric Nv | Bluskamer voor beveiligingsschakelaar. |
DE102005043396A1 (de) * | 2005-09-08 | 2007-03-15 | Siemens Ag | Auswechselbare Löschblechkassette für einen Leistungsschalter sowie Leistungsschalter mit auswechselbarer Löschblechkassette |
US7202436B1 (en) * | 2005-10-28 | 2007-04-10 | Eaton Corporation | Secondary arc chute and electrical switching apparatus incorporating same |
US7488915B2 (en) * | 2006-09-20 | 2009-02-10 | Eaton Corporation | ARC baffle, and ARC chute assembly and electrical switching apparatus employing the same |
KR101094775B1 (ko) * | 2010-07-06 | 2011-12-16 | 엘에스산전 주식회사 | 배선용차단기의 소호기구 |
CN105336526A (zh) * | 2015-12-10 | 2016-02-17 | 二一三电器(上海)有限公司 | 双断点触头的灭弧装置 |
CN105405706A (zh) * | 2015-12-29 | 2016-03-16 | 上海电器陶瓷厂有限公司 | 一种隔离开关的灭弧室 |
KR20180114763A (ko) * | 2017-04-11 | 2018-10-19 | 엘에스산전 주식회사 | 기중 차단기의 아크가스 배출구조 |
FR3065316B1 (fr) * | 2017-04-14 | 2019-07-05 | Schneider Electric Industries Sas | Dispositif de filtrage de gaz de coupure pour un appareil de coupure d'un courant electrique et appareil de coupure d'un courant electrique comportant ce dispositif de filtrage |
US10650993B1 (en) * | 2019-03-19 | 2020-05-12 | Siemens Industry, Inc. | Circuit breaker with enhanced arc extinguishing chamber |
JP6676228B1 (ja) * | 2019-06-26 | 2020-04-08 | 三菱電機株式会社 | 気中遮断器 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2310728A (en) * | 1941-09-04 | 1943-02-09 | Gen Electric | Electric circuit breaker |
US2445190A (en) * | 1944-12-20 | 1948-07-13 | Gen Electric | Electric circuit breaker |
DE1021054B (de) * | 1954-05-11 | 1957-12-19 | Siemens Ag | Schaltkammer fuer elektrische Schaltgeraete |
US3005892A (en) * | 1957-03-19 | 1961-10-24 | Ite Circuit Breaker Ltd | Arc chute design for circuit breakers |
DE1238538B (de) * | 1963-07-19 | 1967-04-13 | Licentia Gmbh | Loeschblechanordnung fuer Schaltgeraete, insbesondere fuer Installationsselbstschalter |
US3440378A (en) * | 1966-04-05 | 1969-04-22 | Gen Electric | Metal plate type of arc-extinguishing device |
DE2133926A1 (de) * | 1971-07-07 | 1973-01-18 | Allis Chalmers Mfg Co | Funkenkammer fuer luft-leistungsschalter |
US3621169A (en) * | 1970-04-20 | 1971-11-16 | Gen Electric | Electric circuit interrupter with novel arc gas discharge muffle assembly |
FR2451097A1 (fr) * | 1979-02-07 | 1980-10-03 | Terasaki Denki Sangyo Kk | Interrupteur de circuit electrique a air, mecanisme et boitier |
GB2042263B (en) * | 1979-02-08 | 1983-10-19 | Terasaki Denki Sangyo Kk | Circuit interrupters |
SU851517A1 (ru) * | 1979-10-04 | 1981-07-30 | Предприятие П/Я А-7676 | Дугогасительна камера |
US4511773A (en) * | 1982-05-27 | 1985-04-16 | General Electric Company | Molding composition for arc circuit breakers |
GB8302615D0 (en) * | 1983-01-31 | 1983-03-02 | Whipp And Bourne 1975 Ltd | Arc splitter plates |
JPS6093230U (ja) * | 1983-12-01 | 1985-06-25 | 三菱電機株式会社 | 電磁接触器 |
FR2589624B1 (fr) † | 1985-10-31 | 1989-03-10 | Merlin Gerin | Disjoncteur electrique multipolaire a boitier isolant moule |
DE3541514A1 (de) * | 1985-11-21 | 1987-05-27 | Siemens Ag | Lichtbogenloeschkammer mit einem aufsatz zur weiteren abkuehlung austretender gase |
US4876424A (en) * | 1988-09-19 | 1989-10-24 | Siemens Energy & Automation, Inc. | Barrier with a venting scheme for a circuit breaker |
SU1756962A1 (ru) * | 1990-04-10 | 1992-08-23 | Ленинградское Производственное Электромашиностроительное Объединение "Электросила" Им.С.М.Кирова | Дугогасительное устройство многополюсного выключател |
DE9115905U1 (de) † | 1991-12-21 | 1993-04-22 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Leitungsschutzschalter mit einer Lichtbogenkammer |
-
1994
- 1994-03-21 DE DE4410108A patent/DE4410108C2/de not_active Expired - Fee Related
-
1995
- 1995-03-10 JP JP7524290A patent/JPH09510574A/ja active Pending
- 1995-03-10 WO PCT/DE1995/000347 patent/WO1995026033A1/de active IP Right Grant
- 1995-03-10 US US08/714,158 patent/US5756951A/en not_active Expired - Lifetime
- 1995-03-10 DE DE59503170T patent/DE59503170D1/de not_active Expired - Lifetime
- 1995-03-10 EP EP95913022A patent/EP0752153B2/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9526033A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE4410108C2 (de) | 1996-08-22 |
EP0752153B2 (de) | 2002-09-25 |
DE59503170D1 (de) | 1998-09-17 |
DE4410108A1 (de) | 1995-09-28 |
JPH09510574A (ja) | 1997-10-21 |
US5756951A (en) | 1998-05-26 |
EP0752153B1 (de) | 1998-08-12 |
WO1995026033A1 (de) | 1995-09-28 |
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