EP1675142B1 - Kontaktsystem für ein elektrisches Schaltgerät - Google Patents

Kontaktsystem für ein elektrisches Schaltgerät Download PDF

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Publication number
EP1675142B1
EP1675142B1 EP04405788A EP04405788A EP1675142B1 EP 1675142 B1 EP1675142 B1 EP 1675142B1 EP 04405788 A EP04405788 A EP 04405788A EP 04405788 A EP04405788 A EP 04405788A EP 1675142 B1 EP1675142 B1 EP 1675142B1
Authority
EP
European Patent Office
Prior art keywords
contact
tulip
fingers
mating
switching device
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.)
Active
Application number
EP04405788A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1675142A1 (de
Inventor
David Saxl
Jadran Kostovic
Matthias Kudoke
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.)
ABB Technology AG
Original Assignee
ABB Technology 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
Priority to ES04405788T priority Critical patent/ES2347786T3/es
Application filed by ABB Technology AG filed Critical ABB Technology AG
Priority to AT04405788T priority patent/ATE475191T1/de
Priority to DE502004011428T priority patent/DE502004011428D1/de
Priority to EP04405788A priority patent/EP1675142B1/de
Priority to KR1020077013995A priority patent/KR101153915B1/ko
Priority to CN2005800485266A priority patent/CN101128896B/zh
Priority to JP2007547139A priority patent/JP5019461B2/ja
Priority to PCT/CH2005/000749 priority patent/WO2006066428A1/de
Publication of EP1675142A1 publication Critical patent/EP1675142A1/de
Priority to US11/812,447 priority patent/US20070246444A1/en
Application granted granted Critical
Publication of EP1675142B1 publication Critical patent/EP1675142B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/38—Plug-and-socket contacts
    • H01H1/385—Contact arrangements for high voltage gas blast circuit breakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/38—Plug-and-socket contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position

Definitions

  • the invention relates to the field of high voltage engineering, in particular the high voltage switch technology in electrical power distribution networks. It is based on a contact system for a switching device and a switching device according to the preamble of the independent claims.
  • the invention is based on the prior art according to the EP 0 844 631 , There, a contact system with a movable contact and a fixed mating contact for an electrical switching device is disclosed, wherein the contact and the mating contact each having a contact tulip or a finger basket with individually einfederbaren contact fingers.
  • the movable contact consists of a rigid annular cylindrical contact tube with a recessed therein sunken, inner contact tulip, which ascends the fixed contact pin of the mating contact or short mating contact pin.
  • the contact fingers of the inner tulip are spread outwards and thus generate the necessary contact force on the mating contact pin.
  • the rigid contact tube moves into an outer contact tulip of the mating contact and spreads its contact finger outwards.
  • an internal contact system consisting of inner tulip of the contact and contact pin of the mating contact
  • an independent external contact system consisting of contact tube of the contact and outer tulip of the mating contact, available.
  • the inner contact system is used for controlling arcing and the external contact system for earthing short-circuit currents or short-time currents.
  • This double contact system with two independent contact tulips corresponds to the circuit breaker system with arc and rated current contacts. In this case, the current transmission takes place in both contact tulips on the inner surfaces of the contact fingers and the spreads of the inner and the outer contact fingers for generating the contact forces happen mechanically and temporally independently.
  • a contact system for switching devices with high short-circuit currents is shown.
  • a rigid contact tube moves into a contact tulip and spreads their contact fingers apart, so that in turn a current transition from the outer surface of the contact tube to the inner surfaces of the contact fingers is created.
  • a erosion-resistant support sleeve is provided to prevent welding of the contact fingers in the arc.
  • the support sleeve optionally has additional ribs or pins for keeping the contact fingers apart.
  • a combined disconnector / earthing switch which has a in three positions (disconnector closed, disconnector open, earth closed) sliding contact part.
  • the contact part In the center position, the contact part is retracted in a hollow cylindrical housing part of the current path, which has contact tulips on both sides for contacting pipe sections of the contact part.
  • the contact part has at its earth-side end an earth contact tulip, which is passed through when closing the earthing by the contact tulip of the housing part. Both contact tulips are at the same potential and do not form a current transition.
  • the Switching pin is a slotted tube, which cooperates with a rigid, annular Jacobschalt consultancy. Inside the slotted tube, a rigid body is arranged to prevent collapse of the tube under current forces.
  • Object of the present invention is to provide an alternative, simplified contact system for a switching device. This object is achieved according to the invention by the features of the independent claims.
  • the invention consists in an electrical contact system for an electrical switching device for power supply networks, wherein the switching device has a central axis and a first contact or mating contact and a second contact, wherein at least the second contact comprises a contact tulip with a plurality of contact fingers and the contact fingers of the central In the closed operating state, the outer surfaces of the contact fingers of the contact tulip abut the first contact and an outer contacting surface for a Make current transition to the first contact. It is thus created by the contact tulip on the outer surfaces of their contact fingers a contact surface for the current transition.
  • the contact tulip As a result of the current transmission to an outer surface of the contact tulip, a large-area contact or current transition surface can also be realized without a mating contact pin on the first contact. Due to the current decrease at the contact tulip outer surface, the contact tulip in the first contact of the parallel-current path in the contact fingers can be shortened and the electromagnetic load capacity can be increased even with a constant immersion depth. This makes the first contact very easy, z. B. as a rigid tube or as a ring contact, be executed. It should be noted that the contact fingers have a sufficiently strong, radially outwardly directed spring force to ensure sufficient contact force to the first contact, even if the contact fingers in addition by electromagnetic Current forces are drawn radially inward.
  • the inner surfaces of the contact fingers of the contact tulip are also in contact with the first contact and form an inner contacting surface for a further current transition to the first contact.
  • the embodiment according to claim 2 has the advantage that separate arcing contacts are provided for the switching device, so that the current transition via the outer contacting surface can take place without arc erosion.
  • the mating contact tulip surrounds the contact tulip from the outside and the common Contact surface is formed by the outer surfaces of the contact fingers and by inner surfaces of the mating contact fingers.
  • the common tulip-tulip contact surface advantageously serves for the passage of current at high short-term currents or short-circuit currents or, if appropriate, operating currents.
  • the mating contact fingers experience a spreading in order to generate a first contact force of the mating contact fingers against the contact fingers; and / or the contact fingers experienced during retraction of the contact tulip in the mating contact tulip compression for generating the reactive first bearing force of the contact fingers to the mating contact fingers.
  • the interaction of the elastic spring behavior of the contact fingers and the mating contact fingers creates a very flexible, adjustment-tolerant, yet reliable contact system.
  • contact tulips with different compression characteristics can be easily combined because the softer contact tulip simply adapts to the harder one.
  • the Tulip tulip design allows greater mechanical tolerances in the alignment of the contacts as well as operation in the event of misalignment due to thermal loads or electromagnetic current forces.
  • the first contact comprises a tubular contact part, in particular the mating contact tulip, and an inner mating contact pin, wherein when closing the switching device, the contact tulip enters the tubular contact part and ascends onto the mating contact pin.
  • the contact fingers of the contact tulip when driving on the mating contact pin experience a spreading for generating a further first bearing force of the contact fingers on the tubular contact part, in particular on the mating contact fingers, and moreover for generating a second bearing force of the contact fingers on the mating contact pin.
  • Claim 8 relates to further measures to improve the contact force between the first and second contact and in particular the combined contact forces of the contact tulip and the SchwarzANDtulpe.
  • Claim 11 relates to an electrical switching device with an electrical contact system as described above and with the advantages mentioned there.
  • Fig. 1 shows a contact area of an electrical switching device.
  • the electrical contact system 1 comprises a first contact or mating contact 2 and a second contact 3, which are typically arranged concentrically with respect to a central axis 12.
  • the second contact 3 comprises a contact tulip 3 a, the contact fingers 30 of which have with respect to the axis 12 substantially radially inwardly directed inner surfaces 300 and substantially radially outwardly directed outer surfaces 301.
  • the first contact 2 comprises a rigid contact tube 2b and additionally, for example, a mating contact pin 2c arranged concentrically therein (shown in dashed lines).
  • the outer surfaces 301 of the contact fingers 30 of the contact tulip 3a on the first contact 2 and form an outer contact surface 301 for a current transition 13 to the first contact 2, namely the contact tube or ring contact 2b.
  • the contact force of the contact fingers 30 on the first contact 2 can be generated, for example, by compressing or spreading the contact tulip 3a or optionally by other means.
  • the contact fingers 30 are designed to spring inwards.
  • additional pressure springs can be mounted inside the contact tulip 3a, which exert a contact force on the contact fingers 30 directed away from the central axis 12, ie directed essentially radially outwards. It is also important to ensure that on the outer contacting surface 301, the outwardly directed first contact force of the contact fingers 30 to the first contact 2 is sufficiently strong, so that the contact fingers 30 also absorb and overcompensate in the spring-inward state additionally inwardly pulling current forces so that anytime a sufficient initial contact force and thus a sufficiently low-impedance current transition 13 is ensured at the outer contacting surface 30.
  • the first contact 2 comprises a contact inner part 2c, which also makes electrical contact with the inner surfaces 300 of the contact fingers 30 of the contact tulip 3a when closing the switch or in the closed operating state and forms a further current transition 14 to the first contact 2 via this inner contacting surface 300.
  • the inner contact part 2 c is preferably in Fig. 1 and 2 illustrated rigid mating contact pin 2c, but could also be an inner tulip 2c. In this way, at least a first current-carrying operating state of the switching device is present, in which the contact fingers 30 of the contact tulip 3 a current transition 13 on its outer surface 301, z. B. for short-term current in an earth electrode, and at a further current transition 14 on its inner surface 300, z. B.
  • the two operating states can occur simultaneously and should be encompassed by the term "closed operating state" of the switching device.
  • the closed operating state should also include closing operations and should include at least one such operating state in which power is transmitted through the contact system 1 or may be such.
  • an arc current can be transmitted during a closing operation of the switching device between the contact tulip 3a, in particular the contact finger caps 31 of the contact fingers 30, and the pin 2c.
  • the contact finger caps 31 thus form at the contact tulip 3a together with the mating contact pin 2c arc contacts 31, 2c of the switching device.
  • the inner mating contact 2c is preferably used to the above-described current transition 14 via the Inner surfaces 300 of the contact fingers 30 of the contact tulip 3a to create.
  • the mechanical function of the inner mating contact 2c is to spread open their contact fingers 30 when the contact tulip 3a rests on them and thereby provide a further first contact force of the contact fingers 30 against the tubular contact part 2b, in particular against a mating contact tulip 2a Fig. 2 , to generate and moreover to generate a second bearing force of the contact fingers 30 on the inner mating contact 2c itself.
  • the contact tulip 3a assumes three different functions, namely at the beginning of the closing arc contact on the contact finger caps 31 and retracting transmission of high and high currents 13, 14 at the contact finger outer surfaces 301 and the contact finger inner surfaces 300.
  • the contact tulip 3a acts So depending on switch type as arcing contact 31 (earthing, disconnector, circuit breaker) and at the same time as a short-circuit current contact 300, 301 or short-time current contact 300, 301 (earthing, disconnector, circuit breaker) or rated current contact 300, 301 (disconnector, circuit breaker).
  • the outer contacting surface 301 of the contact tulip 3a transmits a short-time current up to 63 kA for 3 s, and / or a shock current, in particular up to 170 kA.
  • the types of switches include: quicker, combined disconnector / earthing, switcher and possible other variants of power distribution switching devices.
  • the switching device is typically arranged in a dead tank breaker (DTB), in an encapsulated gas-insulated switchgear (GIS) or in an outdoor switch (LTB).
  • DTB dead tank breaker
  • GIS encapsulated gas-insulated switchgear
  • LTB outdoor switch
  • Fig. 2 shows a preferred embodiment in which the contact tulip 3a is similar as in Fig. 1 is constructed and in addition the first contact 2, a further contact tulip 2a, here called GegenANDtulpe 2a, has.
  • the mating contact or mating contact pin 2c also assumes the same functions as previously discussed and could also be tulip-like.
  • the first contact 2 a mating contact pin 2c for driving up the contact tulip 3a and a mating contact tulip 2a for retracting the contact tulip 3a.
  • the contact tulips 3a, 2a and optionally 2c are also referred to as finger baskets and have a plurality of typically cylindrical arranged, individually and relatively independently einfederbaren contact fingers 20, 30.
  • the deflection may be inwardly towards the axis 12 by compressing the contact fingers 30 (eg, by the mating contact cup 2a) or outwardly away from the axis 12 by spreading the mating contact fingers 20 (eg, through the contact tulip 3a) or Contact finger 30 (eg, by mating contact pin 2c).
  • the contact tulips 3a, 2a and optionally 2c may be made of a slotted tube.
  • a contact tulip should have at least two contact fingers which are sufficiently flexible and in particular radially expandable.
  • the number of contact fingers 30, 20 can be reduced and in particular halved at each of the contact tulips 3a, 2a involved.
  • the number of mating contact fingers 20 could be reduced from 44 to 24 without sacrificing performance in tests with 63 kA short-time current and 170 kA surge current. 6 contact fingers can already be sufficient on the contact tulip 3a in order to ensure the desired current carrying capacity at the current transitions 13, 14.
  • At least one of the contacts 2, 3 should be movable.
  • drive means for axially moving the second contact 3 and in particular for retracting its contact tulip 3a in the first contact 2 are present.
  • the first contact 2 itself can be fixed or movable. A double movement of both contacts 2, 3 or other forms of contact movement are possible.
  • the invention has no restriction with regard to the movement of the first and second contacts 2, 3.
  • a support sleeve 7 may be arranged in the contact tulip 3a.
  • the support sleeve 7 is cylindrical and is inserted or mounted concentrically in the contact finger tulip 3a.
  • the inner sides of the contact fingers 30 rest on the support sleeve 7.
  • the sleeve 7 in particular supports the contact fingers 30 in the area of the contact finger necks 32 and leaves room for the contact finger caps 31 at the tulip opening.
  • the support sleeve 7 serves to prevent a collapse of the contact tulip 3a or its contact fingers 30 under current forces and the contact tulip 3a also at asymmetric current forces, caused by electromagnetic transverse forces to keep in a centered position, so as to ensure a symmetrical contact force of all contact fingers 30.
  • the support sleeve 7 Teflon and in particular a proportion of glass fiber.
  • the glass fiber content can be up to a maximum of 25, for example.
  • the support sleeve 7 may also be made of metal.
  • the contact tulip 3a is advantageously in the area of the tulip bottom, ie in apov Vietnamese College the contact fingers 30, provided with an external thread 8 for screwing the contact tulip 3a in a support tube 10.
  • the support tube 10 is used for power transmission and has at the other end coil contact springs 11 for current collection at a not shown on the current path.
  • the contact tulip 3a should be fixed to the tulip bottom on a mounting plate 9.
  • a mounting plate 9 made of copper (Cu) with a support tube 10 made of aluminum (A1) be bolted.
  • a mounting or bottom plate 9 made of copper with a support tube 10 is also made of copper by electrofusion. As a result, the contact contact resistance of the contact tulip 3a to the support tube 10 can be significantly reduced.
  • the mating contact tulip 2 a is in turn fastened to a base plate 4 and surrounded concentrically by a holding tube 5.
  • the holding tube 5 is surrounded in the opening region of the first contact 2 by a burn-resistant cap 50.
  • the cap 50 serves as protection against arc erosion and as a dielectric shielding of the contact system 1, in particular the mating contact tulip 2 a and in the retracted operating state also the contact tulip 3 a.
  • the shielding cap 50, the mating contact pin cap 21 and the contact finger cap 31 are made of or contain particularly erosion-resistant material, such. As a tungsten-copper (WCu) alloy.
  • the caps 50, 21, 31 can be back-filled with copper.
  • the contact fingers 30 and / or the mating contact fingers 20 are made of or preferably contain a copper-chromium-zirconium (CuCrZr) alloy to achieve a high spring force at the same time high electrical conductivity.
  • the contact tulip 3a can be widened from the contact finger tips 31 to the contact finger necks 32, so that the contact tulip 3a during retraction into the tubular contact part 2b (FIG. Fig. 1 ) or in the mating contact tulip 2a (FIG. Fig. 2 ) is progressively compressible.
  • the mating contact tulip 2a may have a contact spring 6 embracing it for compressing the mating contact fingers 20.
  • the invention also relates to an electrical switching device for a power supply network, in particular an earth electrode, Schnellerder, disconnector or circuit breaker having the above-described electrical contact system 1.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Control Of Electric Motors In General (AREA)
  • Keying Circuit Devices (AREA)
  • Selective Calling Equipment (AREA)
  • Contacts (AREA)
EP04405788A 2004-12-21 2004-12-21 Kontaktsystem für ein elektrisches Schaltgerät Active EP1675142B1 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
AT04405788T ATE475191T1 (de) 2004-12-21 2004-12-21 Kontaktsystem für ein elektrisches schaltgerät
DE502004011428T DE502004011428D1 (de) 2004-12-21 2004-12-21 Kontaktsystem für ein elektrisches Schaltgerät
EP04405788A EP1675142B1 (de) 2004-12-21 2004-12-21 Kontaktsystem für ein elektrisches Schaltgerät
ES04405788T ES2347786T3 (es) 2004-12-21 2004-12-21 Sistema de contacto para un aparato de conmutacion electrica.
KR1020077013995A KR101153915B1 (ko) 2004-12-21 2005-12-14 전기적 스위칭 디바이스를 위한 컨택트 시스템
CN2005800485266A CN101128896B (zh) 2004-12-21 2005-12-14 用于电开关设备的接触系统
JP2007547139A JP5019461B2 (ja) 2004-12-21 2005-12-14 電気的スイッチング・デバイスのためのコンタクト・システム
PCT/CH2005/000749 WO2006066428A1 (de) 2004-12-21 2005-12-14 Kontaktsystem für ein elektrisches schaltgerät
US11/812,447 US20070246444A1 (en) 2004-12-21 2007-06-19 Contact system for an electrical switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04405788A EP1675142B1 (de) 2004-12-21 2004-12-21 Kontaktsystem für ein elektrisches Schaltgerät

Publications (2)

Publication Number Publication Date
EP1675142A1 EP1675142A1 (de) 2006-06-28
EP1675142B1 true EP1675142B1 (de) 2010-07-21

Family

ID=34932418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04405788A Active EP1675142B1 (de) 2004-12-21 2004-12-21 Kontaktsystem für ein elektrisches Schaltgerät

Country Status (9)

Country Link
US (1) US20070246444A1 (ko)
EP (1) EP1675142B1 (ko)
JP (1) JP5019461B2 (ko)
KR (1) KR101153915B1 (ko)
CN (1) CN101128896B (ko)
AT (1) ATE475191T1 (ko)
DE (1) DE502004011428D1 (ko)
ES (1) ES2347786T3 (ko)
WO (1) WO2006066428A1 (ko)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2465125B1 (en) * 2009-08-12 2016-11-09 ABB Schweiz AG Tulip contact and electrical contact system for switching device
CN102231335A (zh) * 2011-06-03 2011-11-02 闫淼江 隔离开关的阳触头及断口组件
KR101199588B1 (ko) * 2011-08-24 2012-11-12 현대중공업 주식회사 가스 절연 개폐장치의 단로기용 이중 구조 콘택트 장치
CN102820583B (zh) * 2012-08-10 2015-03-04 许继集团有限公司 一种高压电器设备用导电连接器
FR2997222B1 (fr) * 2012-10-19 2015-01-16 Alstom Technology Ltd Dispositif d'etablissement et/ou de coupure de courant a contacts permanents a usure reduite
EP2797095B1 (en) * 2013-04-22 2015-11-04 ABB Technology AG Tulip contact for circuit breaker
DE102013216371A1 (de) 2013-08-19 2015-02-19 Siemens Aktiengesellschaft Elektrisches Kontaktsystem
AT13815U3 (de) * 2014-02-21 2015-05-15 Plansee Powertech Ag Kontaktstift und Rohrkontakt sowie Verfahren zur Herstellung
CN103915300A (zh) * 2014-04-04 2014-07-09 宁波奇乐电气集团有限公司 断路器触头系统接触组
RU168756U1 (ru) * 2016-09-14 2017-02-17 Закрытое акционерное общество "Производственное объединение "Спецавтоматика" Термически срабатывающий разъединитель
DE102016218518C5 (de) * 2016-09-27 2023-05-11 Siemens Energy Global GmbH & Co. KG Kontaktstück für einen Hochspannungs-Leistungsschalter sowie Verfahren zu dessen Herstellung
US11380501B2 (en) * 2019-12-31 2022-07-05 Southern States Llc High voltage electric power switch with carbon arcing electrodes and carbon dioxide dielectric gas
EP3933865A1 (en) * 2020-06-30 2022-01-05 ABB Power Grids Switzerland AG Hybrid current path for circuit breakers
CN113223892A (zh) * 2021-05-25 2021-08-06 上海电器科学研究所（集团）有限公司 一种快速无弹跳的真空灭弧装置
US20240312732A1 (en) * 2023-03-17 2024-09-19 Hyundai Electric & Energy Systems Co., Ltd. Earthing switch

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Publication number Priority date Publication date Assignee Title
DE1000899B (de) * 1952-07-21 1957-01-17 Licentia Gmbh Elektrischer Hochspannungs-Leistungsschalter
DE1220927B (de) * 1963-08-23 1966-07-14 Siemens Ag Elektrischer Schalter
JPS531056U (ko) * 1976-06-23 1978-01-07
SE429178B (sv) * 1981-12-23 1983-08-15 Asea Ab Instickskontaktdon
IT8420810V0 (it) * 1984-02-10 1984-02-10 Sace Spa Sistema di contatti d'arco per interruttori elettrici, particolarmente a fluido d'estinzione dell'arco.
JPS61140012A (ja) * 1984-12-11 1986-06-27 三菱電機株式会社 接触子装置
DE19543815A1 (de) * 1995-11-24 1997-05-28 Asea Brown Boveri Elektrisches Schaltgerät

Also Published As

Publication number Publication date
JP2008524815A (ja) 2008-07-10
ATE475191T1 (de) 2010-08-15
DE502004011428D1 (de) 2010-09-02
CN101128896A (zh) 2008-02-20
CN101128896B (zh) 2012-10-03
WO2006066428A1 (de) 2006-06-29
KR20070094901A (ko) 2007-09-27
EP1675142A1 (de) 2006-06-28
US20070246444A1 (en) 2007-10-25
ES2347786T3 (es) 2010-11-04
JP5019461B2 (ja) 2012-09-05
KR101153915B1 (ko) 2012-06-11

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