WO2006066420A1 - Generatorschalter mit verbesserter schaltleistung - Google Patents
Generatorschalter mit verbesserter schaltleistung Download PDFInfo
- Publication number
- WO2006066420A1 WO2006066420A1 PCT/CH2004/000752 CH2004000752W WO2006066420A1 WO 2006066420 A1 WO2006066420 A1 WO 2006066420A1 CH 2004000752 W CH2004000752 W CH 2004000752W WO 2006066420 A1 WO2006066420 A1 WO 2006066420A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- switching
- gas
- baffle
- baffle wall
- chamber housing
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
- H01H33/74—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber wherein the break is in gas
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- 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
- H01H9/52—Cooling of switch parts
- H01H2009/526—Cooling of switch parts of the high voltage switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H2033/888—Deflection of hot gasses and arcing products
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
Definitions
- the invention relates to the field of high-voltage technology, in particular the high-current switch technology in electrical power distribution networks. It is based on a method and generator switch according to the preamble of the independent claims.
- the invention is based on the prior art according to EP 1 403 891 A1.
- a circuit breaker is disclosed in which exhaust gas is passed from an arc chamber through a hollow contact in a concentrically arranged exhaust volume and from there into a more external extinguishing chamber volume.
- at least one intermediate volume and optionally an additional volume are arranged concentrically between the hollow contact and the exhaust volume and separated from one another by intermediate walls which have bores or gas passage openings.
- the radial outflow of the switching gases from the inner and the outer volumes, the exhaust gases are swirled and much heat energy can be delivered to the partition walls of the volumes.
- the Naturallass ⁇ Sonen between the hollow contact volume, the intermediate volume and optionally the additional volume are mutually offset on the circumference.
- the passage openings between the additional volume and the exhaust volume are arranged offset from each other on the circumference and / or in the axial direction. As a result, meandering as well as spiral exhaust paths are specified, the residence time of the exhaust gas in the exhaust area is increased and the heat output of the exhaust gas is improved. Further, the holes may be closed by means of perforated plate-like apertures to produce a plurality of radially directed gas jets or Gasj ets that bounce on the opposite wall, swirling at the impact points and thereby cool the hot gas intense.
- the cooling-improving intermediate volume is arranged in the exhaust area on the drive contact side. A second intermediate volume may additionally be present on the fixed contact side. Overall, in addition to the hollow contact volume, the exhaust volume and the switching chamber volume, at least one further intermediate volume is needed in the circuit breaker in order to achieve efficient exhaust gas cooling.
- the utility model DE 1 889 068 U discloses a switch-disconnector with improved exhaust-gas cooling.
- the cooling device comprises a plurality of tubes arranged concentrically in the gas outflow channel, each of which has diametrically opposite outflow openings, so that the switching gases must rush through a labyrinthine path with numerous deflections during laminar outflow and have to coat large surfaces of the cooling tubes. With this arrangement, therefore, essentially the outflow path is lengthened and the cooling surface in the exhaust is enlarged.
- the outflow openings are wide, in order to keep the back pressure of the switching gas low.
- the flow channels between the cooling tubes are narrow to provide the switching gas much cooling surface available. Overall, the flow is kept in the laminar range and the cooling of the switching gas is carried out by laminar convective heat transfer into the cooling tubes.
- Object of the present invention is to provide an electrical switching device with an improved switching performance. This object is achieved according to the invention by the features of the independent claims.
- the invention consists in a method for cooling a switching gas in an electrical switching device for electrical energy supply networks, in particular in a generator switch, wherein the switching device comprises a switching chamber which is enclosed by a switching chamber housing, wherein further in a switching operation, the switching gas from an arc extinguishing zone to an exhaust area flows, thereby passing a body having a plurality of outflow openings and is divided into a plurality of directed gas jets, wherein further the gas jets are swirled into a plurality of vortices and the vortices by convection in the region of a baffle of the Baffle thermal energy is withdrawn, further wherein the baffle is formed by at least a portion of the switching chamber housing or is attached to a portion of the switching chamber housing.
- the perfused body serves primarily for jet formation and does not need to have any cooling effect on the switching gas itself.
- the improved exhaust gas cooling is achieved in that the heat energy is released by a turbulent heat transfer from the vortices in the baffle and that a highly efficient heat dissipation is made possible by the baffle as part of the switching chamber or as a mounting part on the switching chamber housing.
- the heat energy can be stored in the baffle or forwarded to a heat sink thermally connected to the baffle.
- the embodiment according to claim 2a has the advantage that no electrical flashovers between the switching gas and the baffle wall are to be expected, because there is no or no significant potential difference in the flow through the switching gas outer volume. Even highly ionized, not yet solidified dielectrically switching gas can be cooled at the lying on potential baffle.
- the embodiment according to claim 2b has the advantage that the Sehaltkarmmergeophuse total or at least on a switch contact side is used as a large-volume heat sink for the thermal energy absorbed by the baffle wall.
- the formation of the vortex is supported by interaction of the gas jets with each other before reaching the baffle wall.
- gas jets are to be formed in the body whose trajectories intersect each other before reaching the baffle wall.
- vortex formation does not become bulging gasj ets on the baffle wall caused, but is already induced on the way to the baffle wall by interaction of the gas jets with each other.
- the interactive vortex formation is so strong that no actual point of impact of individual gas jets is no longer present on the baffle, but directly a vortex, formed from at least two Gasj ets, arrives and cools turbulent convective on the baffle.
- the invention also relates to an electrical switching device for an electrical energy supply network, in particular a generator switch comprising a switching chamber which is enclosed by a switching chamber housing and having a central axis and a first contact and a second contact, wherein in an exhaust region of the first or second contact Body is provided with outflow openings for the flow of switching gas, the exhaust area is divided by the body in an inner volume and an outer volume and in the outer volume a baffle for cooling the switching gas is present, further comprising the outflow openings of the body to produce a plurality of directed Gasj
- the body or multi-nozzle body therefore serves to divide the switching gas into at least one exhaust area of the switching device into a plurality of directed gas jets and the baffle serves to Jetverwirbelung and / or the Entströmströmen the turbulent jets to turbulent convective heat transfer to the switching gas or the Switching gas vortex heat energy to escape.
- the baffle may itself be a heat sink or thermally connected to a heat sink.
- the baffle can be located close to the wall of the sewer chamber or as a continuation of the wall.
- Part of the switching chamber housing be designed very large area and are used for turbulent cooling of a large number gasj etindu employer switching vortices. With a switching device designed according to the invention, excellent turn-off performance has been demonstrated due to the improved cooling of the switching gases.
- the embodiments according to claim 6 in turn have the advantage that even highly ionized, hot switching gas can be cooled by the baffle.
- the dual function of the baffle as a heat sink and current path allows a particularly simple and compact design of the switching device.
- the embodiments according to claim 7 have the advantage that the functions of the body as a multi-nozzle body and the baffle are separated as heat dissipation. This allows the body to be optimized in terms of its location in the exhaust area and the design and arrangement of its nozzles and the baffle can be independently optimized with regard to their arrangement in the outer volume, their thermal properties and their thermal connection to the switching chamber housing. Due to the large thermal mass and / or rapid thermal conductivity of the baffle or the Wennsch- housing section, the local heating at the impact locations of the gas jets are quickly distributed to the entire baffle and optionally removed from the baffle.
- the embodiment according to claim 8 has the advantage that, due to the optimized arrangement, in particular spacing, shape and / or orientation, of the nozzles, the power range from which the turbulent convective cooling according to the invention enters into action is more precisely defined and, in particular, expanded.
- the radiation characteristic of the nozzle of the body depending on the position and optionally the shape of the baffle can be designed so that an intense vortex formation and a good guidance of the vortex near the baffle wall and along large areas of the baffle is realized.
- the embodiment according to claim 9 has the advantage that the eddy formation is intensified by the intersecting gas jets. In addition, a vortex formation earlier, d. H. in a weaker performance range.
- the embodiments according to claims 4 and 10- 12 relate to further measures to improve the cooling efficiency of the switching gas in the switching device and thus to increase the switching capacity.
- Fig. 1 a generator switch with a metal sleeve and a housing-side baffle for switching gas cooling;
- Fig. 3 a representation of the mode of action of the turbulent convective cooling
- Fig. Figure 4 is an exhaust pressure as a function of time according to the prior art and according to the invention.
- Fig. 5 shows a cooling efficiency as a function of time according to the invention.
- Fig. 1 shows a generator switch 1 with a switch axis Ia and a Sehaltkarmmer 2 or interrupter unit 2, the an extinguishing Katnmer 9 and exhaust volumes 7, 8 summarizes.
- the switching chamber 2 is surrounded by a switching chamber housing 3.
- the switching chamber housing 3 is composed of a quenching chamber housing or quenching chamber insulator 3c and a first exhaust housing 3a and a second exhaust housing 3b.
- a first contact or switching pin 4 and a second contact in the form of a contact tulip 5 are present, between which an arc 6a burns when the switch 1 is opened.
- the principal function of the switching device 1 is described in EP 0 982 748 B1, the entire disclosure content of which is hereby incorporated by reference into the description. In particular, the functions of the switching device 1 are described there.
- the reference numerals designate the following components: rated current path 15, first fixed rated current contact 16, second fixed rated current contact 17, movable rated current contact 18, first partition 19, Abbraschschaltanowski 20, Isolierstoffdüse 21, slide 22, second partition 23, heating volume 24, blow slot 25, wall 26th , Blowing cylinder 27, blowing piston 28, blowing channel 29, check valve 30.
- a body 10 is arranged with outflow openings 11 for the flow of switching gas.
- the gas flow body 10 divides the exhaust area 7 into an inner volume 7a and an outer volume 7b.
- a baffle 14, 140 for cooling the switching gas available.
- the baffle 14, 140 is formed by at least a portion 14 of the switching chamber housing 3 or is attached to a portion of the switching chamber housing 3 as a plate 140, which may be configured more or less separately. In this arrangement, a highly efficient turbulent switching gas cooling is achieved. Another advantage is that the switching chamber housing 3 is not directly contaminated by the hottest switching gas, but is somewhat protected by the nozzle body 10.
- FIG. 3 shows in greater detail how the vortices 13 effect intensive cooling of the switching gas through turbulent convective heat transfer into the baffle 14, 140.
- a vortex region or vortex zone or vortex boundary layer 130 forms, in which the vortex 13 sweeps along the baffle 14, 140, depositing there a portion of its heat energy, in an outflow region 131 of the vortex 13 of the baffle 14, 140 flows away, recirculated and sucked in a Nachström Colour 132 more switching gas and the baffle 14, 140 for cooling supplies. Due to the repeated intensive gas exchange in the baffle 14, 140 so intensive cooling of the switching gas is achieved. The prerequisite for this is that the baffle 14, 140 itself acts as an efficient heat sink.
- the baffle 14, 140 have a large heat capacity for cooling the turbulent switching gas.
- the baffle 14, 140 for cooling the turbulent switching gas have a high thermal conductivity and be thermally conductively connected to the switching chamber housing 3.
- the baffle 14, 140 is at the potential of the switching chamber housing 3 in order to reduce the risk of electrical flashovers or eliminate.
- the switching gas does not have to be pre-cooled in interaction with the baffle 14, 140. It may rather be hot and especially ionized.
- a particularly compact arrangement is achieved in that the baffle 14, 140 part of a current path 15 of the switching device 1 is.
- the current path 15 is a nominal current path in FIG. 1, but in principle may also be a power current path 15.
- the nozzle body 10 may have a low heat capacity and / or low thermal conductivity. A contribution of the nozzle body 10 for heat dissipation is therefore not necessary. However, an additional cooling effect and homogeneous heat distribution in the nozzle body 10 of advantage.
- the outflow openings 11 of the body 10 are intended to act as nozzles 110, 111, 112 which, due to their arrangement, shape and / or orientation, give the gas jets 12 a desired jet characteristic and / or orientation.
- the gas jets 12 in the nozzles 110, 111, 112 experience a collimation, widening or focusing, which is adapted to a distance H to the baffle 14, 140 so that the vortex formation on the baffle 14, 140 or in the area 14a of Baffle 14, 140 takes place.
- Fig. 2a shows an exemplary embodiment in which the nozzles 110 are funnel-shaped in a radially outwardly directed flow direction of the switching gas.
- nozzles 111, 112 are present, which are directed towards one another such that the trajectories 121, 122 of the associated gas jets 12 intersect each other before reaching the baffle 14, 140 and before reaching the baffle 14, Form 140 vertebrae.
- the oppositely directed nozzles 111, 112 may in particular be adjacent nozzles 111, 112 or also nozzle groups.
- the apertures may also be conically widened cylindrical or in the beam direction, whereby the gas jets 12 are widened.
- outflow openings 11 are described in EP 1 403 891 A1, the entire disclosure content of which is hereby incorporated by reference into the description.
- outflow openings offset axially and / or circumferentially, outflow openings with different diameters, with different center distances, outflow openings optimized in terms of their shape, size, arrangement (eg predominantly in the upper part of the exhaust area) and number.
- the nozzle body 10 is advantageously a sleeve 10, in particular of metal.
- the sleeve 10 can in principle have any shape and is, for example, hollow cylindrical (FIG. 1) or tapered in a truncated cone (FIG. 2c) or tapered (FIG. 2d).
- a lower lid is given by the first partition wall 19 between the extinguishing chamber 9 and the first exhaust area 7 and an upper lid by a switching chamber wall.
- the sleeve 10 encloses a volume V, wherein in addition to the outflow openings 11, other openings or an incomplete sleeve form are in principle permitted, provided that sufficient dynamic pressure can be built up and jet formation is possible.
- the outflow openings 11 are the only openings.
- the ratio of the enclosed volume V to the total area A of the outflow openings 11 should advantageously be in a range of 0.5 m ⁇ V / A ⁇ 1.5 m, preferably 1 m ⁇ V / A ⁇ 1.4 m, particularly preferably 1.2 m ⁇ V / A ⁇ 1, 3 m.
- Fig. 2c shows an embodiment in which the outflow openings 11 are arranged on the body 10 heaped in two radially opposite regions IIa, IIb.
- a flow guided on the baffle wall 14, 140 can be induced in the switching gas in the outer volume 7b.
- the type of web can be selected or influenced by the arrangement of the outflow openings 11, by flow-guiding elements and / or by the shape of the nozzle body 11 and the baffle 14, 140.
- FIG. 3 shows the pressure curve 31 as a function of time for an exhaust 7 without a metal sleeve 10 and a pressure curve 32 with a metal sleeve 32.
- At least one further body with further outflow openings for generating further gas jets is present in the inner volume 7a, and the inner volume 7a is subdivided by the further body into an inner and outer subvolume, at least one subvolume in the outer subvolume another baffle is arranged such that the other Gasj ets are directed against the further baffle.
- at least one body 10 and at least one associated baffle 14, 140 are provided in a first exhaust area 7 of the first contact 4 and in a second exhaust area 8 of the second contact 5.
- the switching chamber housing 3 may be a pressure-tight encapsulating housing 3 for the switching gas, in particular the quenching gas and exhaust gas.
- the switching chamber housing 3 may be surrounded by a magnetic field shielding outer housing.
- the outer housing can be designed as a mechanical support for the switching device 1 at the same time.
- the invention is applicable to any type of electrical switching device 1, in particular in generator switches I 7 in rotary arc switches, in self-blowing switches, in gas or SF 6 switches and in switches with hollow contact tube for Weggasweg entry from the arc extinguishing zone.
- the invention also provides a method for cooling a switching gas in an electrical switching device 1 for electrical energy supply networks, in particular in a generator switch 1, wherein the switching device 1 comprises a switching chamber 2, which is enclosed by a switching chamber housing 3, wherein further in a switching operation, the switching gas is passed from an arc extinguishing zone 6 to an exhaust region 7, 8, while a plurality of outflow openings 11 exhibiting body 10 is flowed through and the switching gas is divided into a plurality of directed Gasj ets 12, wherein further the Gasj ets 12 into a plurality of vortices 13th be vortexed and the vortexes 13 by convection in a portion 14a of a baffle 14, 140 of the baffle 14, 140 thermal energy is removed, wherein the baffle 14, 140 is formed by at least a portion 14 of the switching chamber housing 3 or at a portion of the switching chamber housing third attached is t.
- the switching device 1 comprises a switching chamber 2, which is enclosed by a switching chamber housing 3, wherein further in
- the baffle 14, 140 can be kept at the potential of the switching chamber housing 3.
- the baffle 14, 140 may also be maintained at a temperature of the switching chamber housing 3 by heat conduction.
- the formation of the switching gas vortices 13 can be supported by interaction of the gas jets 12 with each other before reaching the baffle 14, 140.
- 10 such Gasj ets 12 may be formed in the body, the Traj ektorien 121, 122 intersect each other before reaching the baffle 14, 140.
- a radiation characteristic of the outflow openings 11 can be adapted to a distance H to the baffle 14, 140, that the vertebrae 13 are formed on or in the region 14a of the baffle 14, 140.
- the switching gas and in particular the vortices 13 are guided on circular paths, screw paths or on spiral paths around the central axis 1a of the switching device 1 along the baffle wall 14, 140.
- the invention further relates to a section of an electrical high-voltage system, which is an electrical switching device 1, in particular a generator switch 1, as described above and as claimed in claims 5-13 to we.
- switching chamber housing switching chamber wall 3a First exhaust housing
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- Circuit Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT04802392T ATE389943T1 (de) | 2004-12-24 | 2004-12-24 | Generatorschalter mit verbesserter schaltleistung |
PCT/CH2004/000752 WO2006066420A1 (de) | 2004-12-24 | 2004-12-24 | Generatorschalter mit verbesserter schaltleistung |
JP2007547131A JP4494476B2 (ja) | 2004-12-24 | 2004-12-24 | 改善されたスイッチング容量を有するジェネレータ・スイッチ |
DE502004006630T DE502004006630D1 (de) | 2004-12-24 | 2004-12-24 | Generatorschalter mit verbesserter schaltleistung |
CN2004800448949A CN101120423B (zh) | 2004-12-24 | 2004-12-24 | 具有改进的断流容量的发电机开关 |
EP04802392A EP1829077B2 (de) | 2004-12-24 | 2004-12-24 | Generatorschalter mit verbesserter schaltleistung |
US11/812,575 US7893379B2 (en) | 2004-12-24 | 2007-06-20 | Generator circuit breaker with improved switching capacity |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CH2004/000752 WO2006066420A1 (de) | 2004-12-24 | 2004-12-24 | Generatorschalter mit verbesserter schaltleistung |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/812,575 Continuation US7893379B2 (en) | 2004-12-24 | 2007-06-20 | Generator circuit breaker with improved switching capacity |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006066420A1 true WO2006066420A1 (de) | 2006-06-29 |
Family
ID=34959547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2004/000752 WO2006066420A1 (de) | 2004-12-24 | 2004-12-24 | Generatorschalter mit verbesserter schaltleistung |
Country Status (7)
Country | Link |
---|---|
US (1) | US7893379B2 (de) |
EP (1) | EP1829077B2 (de) |
JP (1) | JP4494476B2 (de) |
CN (1) | CN101120423B (de) |
AT (1) | ATE389943T1 (de) |
DE (1) | DE502004006630D1 (de) |
WO (1) | WO2006066420A1 (de) |
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WO2011018426A1 (fr) | 2009-08-14 | 2011-02-17 | Areva T&D Sas | Chambre de coupure pour disjoncteur a moyenne ou haute tension a energie de manœuvre reduite |
EP2402970A1 (de) | 2010-07-01 | 2012-01-04 | Alstom Grid SAS | Unterbrechungskammer eines Schutzschalters für Hoch- und Mittelspannung mit reduzierter Bedienungsenergie und kleineren Abmessungen |
US8389886B2 (en) | 2005-09-26 | 2013-03-05 | Abb Technology Ag | High-voltage circuit breaker with improved circuit breaker rating |
WO2013045233A1 (de) * | 2011-09-28 | 2013-04-04 | Siemens Aktiengesellschaft | Leistungsschalterunterbrechereinheit |
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- 2004-12-24 JP JP2007547131A patent/JP4494476B2/ja not_active Expired - Fee Related
- 2004-12-24 WO PCT/CH2004/000752 patent/WO2006066420A1/de active IP Right Grant
- 2004-12-24 AT AT04802392T patent/ATE389943T1/de not_active IP Right Cessation
- 2004-12-24 DE DE502004006630T patent/DE502004006630D1/de active Active
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2007
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Cited By (11)
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US8389886B2 (en) | 2005-09-26 | 2013-03-05 | Abb Technology Ag | High-voltage circuit breaker with improved circuit breaker rating |
EP2120244A1 (de) | 2008-05-15 | 2009-11-18 | ABB Technology AG | Hochspannungs-Leistungsschalter |
WO2011018426A1 (fr) | 2009-08-14 | 2011-02-17 | Areva T&D Sas | Chambre de coupure pour disjoncteur a moyenne ou haute tension a energie de manœuvre reduite |
EP2402970A1 (de) | 2010-07-01 | 2012-01-04 | Alstom Grid SAS | Unterbrechungskammer eines Schutzschalters für Hoch- und Mittelspannung mit reduzierter Bedienungsenergie und kleineren Abmessungen |
WO2013045233A1 (de) * | 2011-09-28 | 2013-04-04 | Siemens Aktiengesellschaft | Leistungsschalterunterbrechereinheit |
WO2015097143A1 (en) * | 2013-12-23 | 2015-07-02 | Abb Technology Ag | Electrical switching device |
CN106030744A (zh) * | 2013-12-23 | 2016-10-12 | Abb 技术有限公司 | 电气开关装置 |
US9899167B2 (en) | 2013-12-23 | 2018-02-20 | Abb Schweiz Ag | Electrical switching device |
CN106030744B (zh) * | 2013-12-23 | 2019-07-02 | Abb瑞士股份有限公司 | 电气开关装置 |
RU2706233C2 (ru) * | 2013-12-23 | 2019-11-15 | Абб Швайц Аг | Электрическое переключающее устройство |
US11621135B2 (en) | 2017-08-04 | 2023-04-04 | Abb Schweiz Ag | Armature for electromagnetic actuator, an electromagnetic actuator, a switch device and a method for manufacturing an armature |
Also Published As
Publication number | Publication date |
---|---|
CN101120423B (zh) | 2010-06-23 |
EP1829077A1 (de) | 2007-09-05 |
JP4494476B2 (ja) | 2010-06-30 |
DE502004006630D1 (de) | 2008-04-30 |
ATE389943T1 (de) | 2008-04-15 |
CN101120423A (zh) | 2008-02-06 |
US20080006609A1 (en) | 2008-01-10 |
US7893379B2 (en) | 2011-02-22 |
JP2008525944A (ja) | 2008-07-17 |
EP1829077B2 (de) | 2011-03-23 |
EP1829077B1 (de) | 2008-03-19 |
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