EP1173862B1 - Schaltgasdämpfer für niederspannungs-leistungsschalter - Google Patents

Schaltgasdämpfer für niederspannungs-leistungsschalter Download PDF

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Publication number
EP1173862B1
EP1173862B1 EP00940149A EP00940149A EP1173862B1 EP 1173862 B1 EP1173862 B1 EP 1173862B1 EP 00940149 A EP00940149 A EP 00940149A EP 00940149 A EP00940149 A EP 00940149A EP 1173862 B1 EP1173862 B1 EP 1173862B1
Authority
EP
European Patent Office
Prior art keywords
switching gas
gas damper
switching
circuit breaker
deflection elements
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.)
Expired - Lifetime
Application number
EP00940149A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1173862A1 (de
Inventor
Michael Bach
Guenter Seidler-Stahl
Detlev Schmidt
Michael Sebekow
Sezai Tuerkmen
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1173862A1 publication Critical patent/EP1173862A1/de
Application granted granted Critical
Publication of EP1173862B1 publication Critical patent/EP1173862B1/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
    • H01H9/342—Venting arrangements for arc chutes
    • 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
    • H01H2009/348—Provisions for recirculation of arcing gasses to improve the arc extinguishing, e.g. move the arc quicker into the arcing chamber

Definitions

  • the invention relates to a switching gas damper for a multi-pole Low-voltage circuit breaker used for additional Damping, deionization and cooling of the switching gases as Attachment is arranged above the parallel quenching chambers, wherein the attachment is a cuboid housing with a front wall, has a back wall and a lid.
  • Such a switching gas damper as it is through the EP 0 437 151 B1 has become known, has the task of Effect of an arc extinguishing device for switching in air Support low voltage circuit breakers.
  • the arc extinguishing device ensures that the Circuit breakers occurring switching arcs without impairment the circuit breaker itself and adjacent Parts of the plant or other assemblies are extinguished.
  • These arc quenchers or quenching chambers have depending on the type, size and required switching capacity the circuit breaker very different designs. Common to all of these institutions is more or less parallel arrangement of sheet steel quenching plates, whereby these quenching plates are perpendicular to the switching arc.
  • the well-known switching gas damper forms a hood, all Arcing chambers of the circuit breaker covered. Before that Switching gases can leave the hood, they flow through Cooling grille and an outlet filter. The flow direction of the Switching gases upwards are not affected by this. This can be undesirable if above the circuit breaker there is little space. It also requires collection the switching gases from all quenching chambers in one Space sufficient volume to under all circumstances to avoid an electrical phase flashover.
  • the object of the present invention is based on this therein, a switching gas damper for low-voltage circuit breakers for additional damping, deionization and cooling the switching gases to create a redirection the shale gases in a natural vertical direction allows different direction and its effectiveness is significantly improved.
  • the invention solves the problem that the Cover closed and a bottom with separate Inlets for receiving switching gas flows from everyone Arcing chamber of the low-voltage circuit breaker is provided and that each inlet opening is through channel walls and / or deflecting elements formed for the purpose lateral discharge of the switching gas flows is assigned.
  • FR 2 511 188 A1 is already a switching gas damper became known for a redirection of the flow direction of switching gases.
  • the switching gas damper can be used as Hood to be formed with its open bottom an arc quenching chamber is placed and opposite this is sealed by grooves or separate sealants.
  • the switching gas damper can also be placed in the housing the arc release chamber be integrated that for guidance the walls for switching gas flow to the housing of the extinguishing chamber belong, but their function only by putting on received a lid.
  • Shift gas damper a single-pole design for double interrupting contact systems (bridge contacts). In doing so the switching gases of both switching contacts of one pole after opposite Sides in the direction of opposite Connection rails deflected.
  • circuit breakers which has a front panel and rear panel Have connections, is not an improvement and resolves not the task.
  • Another well-known gas damper after the DE 1 104 019 B is also single-pole. It is suitable for circuit breakers with one switching contact per pole and directs the switching gases into two partial flows after separation the sides of each arc quenching chamber. Hence the application this switching gas damper with a multi-pole circuit breaker a widening of the entire switching device require, with a free flow of the switching gases not would be guaranteed. Therefore, this switching gas damper also enables no economical solution to the task.
  • three-pole low-voltage circuit breakers are recommended an arrangement where parallel a channel wall to the front wall and parallel to the rear wall arranged another channel wall and thereby in connection formed with a total of three deflection channels are, of which the outside, from the front wall and the back wall limited discharge channels on opposite Sides are closed by a side wall and that of the middle discharge duct bounded on the duct walls is open on both sides is such that the from the outer arcing chambers of the Low-voltage circuit breaker escaping switching gas flows are discharged separately to opposite sides, while the one emerging from the middle chamber Switching gas flow through the middle discharge channel after both Sides out of the switching gas damper.
  • This results in dimensions of the switching gas damper advantageously long flow paths with correspondingly cheaper Cooling effect on the switching gases.
  • the deflection elements and channel walls can be different Arranged and designed in such a way.
  • the channel walls from the floor to the cover of the switching gas damper extend and the side walls can be on the same side of the switching gas damper can be arranged like the outside Extinguishing chambers, such that the switching gas flows to the outside Extinguishing chambers parallel to the front wall and the rear wall of the switching gas damper to the opposite Side of the low voltage circuit breaker and the switching gas current the middle chamber to both opposite Pages.
  • This arrangement is designed with simple to realize flat wall elements.
  • the one deflecting element from the floor on one channel wall starting to the cover on the opposite Extend channel wall ending the further deflecting element arranged in opposite directions, rising in the opposite direction between the channel walls and wherein the side parts are one of the rising ones Arrangement of the deflection elements have an adapted shape, such that that a separation of the switching gas flows of the outer quenching chambers and the middle quenching chamber is effected.
  • this angled arrangement can the deflection elements over the Inlet openings for guiding the switching gas flows of the outer Arcing chambers arranged parallel to the lid and the floor and can be from one duct wall to another duct wall extend, the separation of the switching gas flows outer quenching chambers and the switching gas flow of the middle Extinguishing chamber on the mutually facing sides of the deflection elements Side parts are arranged.
  • the deflection elements are simultaneously formed as channel walls and are arranged so that the extinguishing chambers of the outer Low voltage circuit breaker emerging poles Switching gas flows directly to the side, i.e. always on the same Side of the low voltage circuit breaker from the Switching gas dampers are derived from the middle Switching gas stream exiting the quenching chamber above or next to the Deflection elements on both opposite sides of the Shift gas damper is guided.
  • the first embodiment of this idea can be the deflection elements extending from the floor to the cover of the switching gas damper be arranged.
  • the deflection elements starting from the front wall of the switching gas damper between the inlet openings above the quenching chambers running in the direction of the rear wall, then angled, behind the inlet openings for the switching gases the outer arcing chambers up to the lateral limit of the switching gas damper, be arranged such that between these angled parts of the deflection elements and the rear wall of the switching gas damper one with the room above the middle arcing chamber of the low-voltage circuit breaker connected, on both sides of the switching gas damper open discharge channel for the switching gas flow this middle chamber is formed. Is a low flow resistance desired, the bends of the deflection elements be rounded.
  • the Switching gas damper extending deflection elements are provided be that also take over the function of channel walls. This can be done in such a way that the deflection elements extending between the front wall and the rear wall are arranged that each have a discharge channel for an external one Extinguishing chamber through the floor and a deflector limited and between the deflection elements and the lid open on both sides and with the middle entrance opening in the Floor-connected discharge channel for the middle one Extinguishing chamber is formed.
  • the deflection of the laterally guided Switching gas flows parallel to the side walls of the low-voltage circuit breaker through a directional housing with a deflection chamber.
  • This directional housing can be angular be trained.
  • the switching gas flows can also be deflected by that the cover of the switching gas damper is wider than that Low voltage circuit breakers trained and lateral Limits of the switching gas damper with downward directed Guide elements are provided.
  • Such guidance elements can simple way by extending downward extensions be formed of the side walls of the switching gas damper.
  • FIG. 1 shows schematically in a perspective view a first possible embodiment of the invention Switching gas damper in its spatial position to the low-voltage circuit breaker and the flow of switching gases from the quenching chambers of the same through the switching gas damper.
  • 2 shows schematically in a perspective view a second possible embodiment of the invention Switching gas damper and the flow of switching gases through same.
  • FIG 3 shows schematically in a perspective view a third possible embodiment of the invention Switching gas damper in its spatial position Low voltage circuit breakers and the flow of switching gases from the quenching chambers of the same through the switching gas damper.
  • FIG. 5 shows schematically in a perspective view two variants of a fourth possible embodiment of the switching gas damper according to the invention and the flow of Switching gases through the same.
  • FIG. 6 shows a perspective illustration schematically two further variants of the fourth possible embodiment of the switching gas damper according to the invention and Flow of the switching gases through the same.
  • the switching gas damper 1 according to FIG. 1 is shown schematically in perspective representation in connection with a partial Low-voltage circuit breaker 2 shown.
  • the switching gas damper 1 is one lifted from the circuit breaker 2 Position shown to interact with the Arcing chambers 6, 7 and 8 and the course of the switching gas flows to illustrate.
  • a deflection element 15 with a side part 28 forms with one from the bottom 14 of the switching gas damper 1 to the cover 9 the same extending channel wall 16 and the left side wall 13 one open to the right side of the switching gas damper 1 Discharge channel 17.
  • Another deflection element 19 with a invisible side part forms with one from the floor 14 of the switching gas damper 1 up to the cover 9 thereof Channel wall 20 and the right side wall 12 one to left side of the switching gas damper 1 open discharge channel 21. Both discharge channels 17 and 21 are through the lid 9 of the Switching gas damper 1 and closed at the bottom by its bottom 14. Between the deflection elements 15 and 19 and the channel walls 16 and 20 remain due to the inclined, from the bottom 14 to the lid 9 rising arrangement of Deflection elements 15 and 19 free spaces that have a central discharge channel 23 form.
  • the one from the left extinguishing chamber 6 of the low-voltage circuit breaker 2 emerging switching gas stream 3 passes through the left one, which is not shown because of the better overview Entry opening in the switching gas damper 1. He is through the deflection element 15 in the through the cover 9, the left Side wall 13, the rear wall 11, the channel wall 16 and the bottom 14 formed discharge channel 17 from which it is only on the right side of the switching gas damper 1 can exit, like that is indicated by an arrow 18.
  • the one on the right Arcing chamber 8 of the low-voltage circuit breaker 2 emerging Switching gas stream 5 passes through because of the better Overview of the right entry opening, also not shown in the switching gas damper 1.
  • deflection chamber 27 is provided, which is attached to the side of the switching gas damper 1.
  • the deflection chamber 27 is in Fig.1 for better understanding shown at a distance from the switching gas damper 1.
  • FIG. 2 shows schematically a second embodiment of a switching gas damper 31 according to the invention and the flow paths the switching gas flows 33, 34 and 35 through the same.
  • a deflection element 45 does not form together with one visible side part and one from the bottom 44 of the switching gas damper 31 to the cover 39 of the same extending channel wall 46 and a left side wall 43 one to the right Side of the switching gas damper 31 open discharge channel 47.
  • Discharge channel 53 From which it on both sides of the Switching gas damper 31 can emerge, like that by the arrows 54 and 55 is indicated.
  • FIG. 3 schematically shows a third embodiment Switching gas damper 61 in its spatial position to one Low voltage circuit breaker 62 and the flow paths of switching gas flows 63, 64, 65 from arcing chambers 66, 67, 68 by the switching gas damper 61.
  • This is according to the Representation in Figure 1 at a spatial distance from Low voltage circuit breaker 62 is shown to the Paths of the switching gas flows 63, 64, 65 from the individual quenching chambers 66, 67, 68 to clarify.
  • the switching gas damper 61 consists essentially of a closed one Cover 69, from a front wall 70, a rear wall 71, a closed right side wall 72, a closed left side wall 73 and one outside the entry openings closed bottom 74.
  • the switching gas damper In this version, 61 is wider than the low-voltage circuit breaker 62. This achieves that the switching gas flows 63, 64 and 65 to the side of the low-voltage circuit breaker 62 through the closed Side walls 72, 73 are derived downward, as in 4 is explained. For this, the Side walls 72 and 73 with baffles facing downwards or be provided with extensions 128.
  • the one from the left quenching chamber 66 of the low-voltage circuit breaker 62 emerging switching gas stream 63 passes through the left one, which is not shown because of the better overview Entry opening in the switching gas damper 61. He will led out of the switching gas damper 61 by the deflection element 75 and deflected downward by the left side wall 73, as indicated by arrow 77.
  • the one from the right quenching chamber 68 of the low-voltage circuit breaker 62 emerging switching gas stream 65 passes through because of Right entry opening, also not shown, provides a better overview in the switching gas damper 61. He is through the deflection element 76 is led out of the switching gas damper 61 and also down through the right side wall 72 distracted, as indicated by arrow 78.
  • This switching gas stream 64 emerging laterally in two partial streams is also discharged downward through the closed side walls 72, 73, as is indicated by the arrows 80 and 81.
  • the side walls can also be omitted, so that the switching gases can escape laterally unaffected, provided the installation location of the low-voltage circuit breaker 62 is suitable for this.
  • FIG. 4 shows schematically a top view of the embodiment of the switching gas damper 61 according to the invention 3, with the lid omitted.
  • the switching gas damper 61 is wider than that in FIG low-voltage circuit breakers located in a slide-in housing 82 62. This is between a left side wall 83 of the low-voltage circuit breaker 62 and left side wall 73 of the switching gas damper 61 an up closed by the cover 69 of the switching gas damper 61, downwardly open discharge channel 84 is formed.
  • the one from the left quenching chamber 66 of the low-voltage circuit breaker 62 emerging switching gas stream 63 passes through the left inlet opening 87 into the switching gas damper 61. It is by the deflection element 75 from the switching gas damper 61 led out and through the left side wall 73 of the Shift gas damper 61 deflected downward, like that by one Arrow 88 is indicated.
  • the one from the right fire chamber 68 of the low-voltage circuit breaker 62 emerging Switching gas flow 65 passes through the right inlet opening 89 in the switching gas damper 61. It is caused by the deflecting element 76 led out of the switching gas damper 61 and through the right side wall 72 of the switching gas damper 61 also deflected downward, as indicated by an arrow 90 is.
  • the one from the middle arcing chamber 67 of the low-voltage circuit breaker 62 emerging switching gas stream 64 occurs through the middle inlet opening 91 in the switching gas damper 61 a. It passes through the cover 69 (removed, 3), the deflection elements 75 and 76, the rear wall 71 and the bottom 74 formed discharge channel 79, from which it opens both sides of the switching gas damper 61 can emerge. Also this switching gas flow emerging laterally in two partial flows 64 is through the closed side walls 72, 73 of Shift gas damper derived downwards, like that through the Arrows 92 and 93 are indicated. Through the rear wall 71 of the Switching gas damper 61 and the lateral derivation of the switching gases become the connecting rails 94, 95 and 96 of the low-voltage circuit breaker 62 before touching the switching gases safely protected.
  • FIG. 5 shows schematically in a perspective view two variants of a further embodiment of one switching gas damper according to the invention.
  • the switching gas damper shown 101 has a front wall 110, a rear wall 111 and one outside of entry openings 107 and 108 (one third entry opening is not visible) closed bottom 114 on.
  • a lid 109 is broken off and in a lifted off Position shown.
  • deflection elements 115 are provided, which are rectangular Parts are formed and to the right side of the switching gas damper 101 open discharge channels 117 for the switching gas flow 103 from the external arcing chambers of the not shown Form low-voltage circuit breakers.
  • the flow direction is indicated by an arrow 122.
  • the variant according to the left part of FIG. 5 has deflection elements 119, which are also as angle elements, but with an angle larger are designed as 90 °.
  • the deflection elements also form 119 open to the left side of the switching gas damper 101 Discharge channels 121 for the switching gas flow 105 from the outside Chutes.
  • the flow direction with indicated by an arrow 118.
  • the one from the middle arcing chamber of the low-voltage circuit breaker escaping switching gas stream 104 passes through the middle inlet opening 108 in the switching gas damper 101 on. It goes directly into the through the lid 109, the Front wall 110, rear wall 111 and baffles 115 or 119 formed discharge channel 123, from which it on both Sides of the switching gas damper can escape.
  • the hereby Partial flows of the switching gases are indicated by arrows 124 and 125 indicated.
  • FIG. 6 shows schematically in a perspective view two further variants of an inventive Switching gas damper 101 and the flow of switching gas flows 103, 104, 105 by the same. Otherwise the same version and functionality, which is why all identical parts are not have been provided with reference numerals again, these are here used deflection elements 126 and 127 as curved or inclined straight elements educated. On another, repeated explanation of this Variants should therefore be avoided.
  • variable arrangement of Deflection elements and discharge channels it is possible depending of the occurring gas quantities and the properties of the used quenching chambers, several separate flow paths with different desired damping and Get cooling properties.
  • the described switching gas damper 1, 31, 61 and 101 can as a sheet metal or plastic body in one piece or from several Parts made together.
  • a multi-part Structure allows multiple variants using uniform To manufacture standard parts.
  • a such a standard part having the entry openings Be the floor with the front and rear wall.
  • Another one The standard part can be the lid.
  • as Standard part is a lid with attached front and rear wall to be provided.

Landscapes

  • Circuit Breakers (AREA)
  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
EP00940149A 1999-04-23 2000-04-20 Schaltgasdämpfer für niederspannungs-leistungsschalter Expired - Lifetime EP1173862B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19920042A DE19920042C1 (de) 1999-04-23 1999-04-23 Schaltgasdämpfer für Niederspannungs-Leistungsschalter
DE19920042 1999-04-23
PCT/DE2000/001304 WO2000065621A1 (de) 1999-04-23 2000-04-20 Schaltgasdämpfer für niederspannungs-leistungsschalter

Publications (2)

Publication Number Publication Date
EP1173862A1 EP1173862A1 (de) 2002-01-23
EP1173862B1 true EP1173862B1 (de) 2003-03-05

Family

ID=7906636

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00940149A Expired - Lifetime EP1173862B1 (de) 1999-04-23 2000-04-20 Schaltgasdämpfer für niederspannungs-leistungsschalter

Country Status (7)

Country Link
US (1) US6960736B1 (zh)
EP (1) EP1173862B1 (zh)
JP (1) JP4309066B2 (zh)
CN (1) CN1145991C (zh)
DE (2) DE19920042C1 (zh)
HK (1) HK1043432A1 (zh)
WO (1) WO2000065621A1 (zh)

Families Citing this family (16)

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Publication number Priority date Publication date Assignee Title
DE20215343U1 (de) 2002-09-30 2003-01-30 Siemens AG, 80333 München Anordnung mit einem Niederspannungs-Leistungsschalter und einem mit einem Trageelement versehenen Schaltgasdämpfer für den Niederspannungs-Leistungsschalter
US6924721B2 (en) * 2003-07-14 2005-08-02 Eaton Corporation Gas segregator barrier for electrical switching apparatus
DE102004053613B4 (de) * 2004-11-02 2006-09-28 Siemens Ag Schaltanlage mit einer entriegelnden Lichtbogenbegrenzung
US6977354B1 (en) * 2004-11-03 2005-12-20 Eaton Corporation Arc hood and power distribution system including the same
CZ20041197A3 (cs) * 2004-12-08 2006-07-12 Hess Trading Sr, Spol. S R.O. Zhásecí komora jistice
US7750770B2 (en) * 2006-09-25 2010-07-06 Rockwell Automation Technologies, Inc. Gas diverter for an electrical switching device
WO2011146600A1 (en) * 2010-05-18 2011-11-24 Smc Electrical Products, Inc Arc resistant electrical enclosure
US9117607B2 (en) * 2012-12-14 2015-08-25 Schneider Electric USA, Inc. Muffler for enhanced arc protection
US9425591B2 (en) * 2013-10-31 2016-08-23 Schneider Electric Industries Sas ARC deflecting and ventilation assembly for electrical enclosures and systems for ARC deflecting and ventilation
US9412542B2 (en) * 2014-02-25 2016-08-09 Sensata Technologies, Inc. Particulate and pressure redirection shield for an electric circuit breaker
US9478951B2 (en) * 2014-12-30 2016-10-25 Schneider Electric USA, Inc. Method for treating internal arcs
EP3278411B1 (de) * 2015-04-03 2021-05-26 Eaton Intelligent Power Limited Niederspannungs-schaltschrank mit verringertem risiko für das auftreten eines störlichtbogens
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
CN107171191B (zh) * 2016-03-07 2021-02-26 Abb瑞士股份有限公司 具有互连的排气系统的开关装置封壳
CN107221483A (zh) * 2017-06-09 2017-09-29 德力西电气有限公司 一种模块化灭弧装置
US11878092B2 (en) * 2019-08-28 2024-01-23 Boston Scientific Scimed, Inc. Medical compositions based on crosslinkable hydrophilic polymers

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US2310728A (en) * 1941-09-04 1943-02-09 Gen Electric Electric circuit breaker
DE1104019B (de) * 1959-09-11 1961-04-06 Continental Elektro Ind Ag Lichtbogenloeschkammer fuer elektrische Leistungsschalter
US3582966A (en) * 1969-12-30 1971-06-01 Ite Imperial Corp Venting means for circuit breaker arc quencher
US3621169A (en) * 1970-04-20 1971-11-16 Gen Electric Electric circuit interrupter with novel arc gas discharge muffle assembly
FR2511188A1 (fr) 1981-08-06 1983-02-11 Telemecanique Electrique Dispositif d'echappement pour les gaz apparaissant dans un interrupteur en charge, en particulier limiteur, lors de la coupure d'un courant important
DE8531352U1 (de) 1985-11-06 1986-01-02 Siemens AG, 1000 Berlin und 8000 München Lichtbogenlöschkammer
DE3541514A1 (de) * 1985-11-21 1987-05-27 Siemens Ag Lichtbogenloeschkammer mit einem aufsatz zur weiteren abkuehlung austretender gase
FR2655770B1 (fr) * 1989-12-11 1995-10-20 Merlin Gerin Disjoncteur multipolaire a filtre des gaz commun aux differents poles.
DE4333278A1 (de) 1993-09-24 1995-03-30 Siemens Ag Leistungsschalter mit einer Lichtbogenlöscheinrichtung
DE4410108C2 (de) 1994-03-21 1996-08-22 Siemens Ag Lichtbogenlöschkammer mit drei Barrieren für den Durchtritt von Lichtbogengasen
DE29612636U1 (de) * 1996-07-15 1997-08-14 Siemens AG, 80333 München Lichtbogenlöschkammer für Niederspannungs-Leistungsschalter
DE10033936A1 (de) * 2000-07-05 2002-01-17 Siemens Ag Niederspannungs-Leistungsschalter mit einer Lichtbogenlöschkammer und mit einem Schaltgasdämpfer

Also Published As

Publication number Publication date
DE50001386D1 (de) 2003-04-10
CN1145991C (zh) 2004-04-14
CN1348598A (zh) 2002-05-08
US6960736B1 (en) 2005-11-01
JP4309066B2 (ja) 2009-08-05
EP1173862A1 (de) 2002-01-23
JP2002543559A (ja) 2002-12-17
HK1043432A1 (en) 2002-09-13
DE19920042C1 (de) 2001-01-18
WO2000065621A1 (de) 2000-11-02

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