EP1603140A1 - Composant actif pour limiteur de surtension encapsulé - Google Patents

Composant actif pour limiteur de surtension encapsulé Download PDF

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Publication number
EP1603140A1
EP1603140A1 EP04405343A EP04405343A EP1603140A1 EP 1603140 A1 EP1603140 A1 EP 1603140A1 EP 04405343 A EP04405343 A EP 04405343A EP 04405343 A EP04405343 A EP 04405343A EP 1603140 A1 EP1603140 A1 EP 1603140A1
Authority
EP
European Patent Office
Prior art keywords
active part
field control
control element
varistor
column
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.)
Withdrawn
Application number
EP04405343A
Other languages
German (de)
English (en)
Inventor
Hansjoerg Gramespacher
Bernhard Doser
Marlen Ljuslinder
Nils Weiss
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
Application filed by ABB Technology AG filed Critical ABB Technology AG
Priority to EP04405343A priority Critical patent/EP1603140A1/fr
Priority to JP2005155324A priority patent/JP4680680B2/ja
Priority to KR1020050046688A priority patent/KR101138941B1/ko
Priority to CN2005100735850A priority patent/CN1707704B/zh
Publication of EP1603140A1 publication Critical patent/EP1603140A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors

Definitions

  • the invention is based on an active part for an encapsulated Surge arrester according to the preamble of claim 1.
  • the invention also relates to a process for the preparation of such an active part and one of Voltage limiting in medium and high voltage networks serving encapsulated surge arrester containing the active part.
  • Such an active part is in the manufacture of the surge arrester in a Non-contact encapsulation used, which is generally made of metal consists of conductive, such as aluminum, an aluminum alloy or steel Plastic or made of insulating material, with an electrically conductive layer is covered.
  • the active part has one with high voltage and one with earth potential connectable electrode and one or more varistor columns, which are arranged between the two electrodes.
  • the varistor column generally contains several stacked ones cylindrical varistors based on doped zinc oxide. At least between two of the varistors can also heat absorption or be arranged an extension of the column serving metal body. Are two or more varistor columns provided, so can between two of the varistors also an insulating body can be provided. The varistors of the different columns can then be connected in series.
  • the encapsulation is with an insulating material, which solid, liquid or gaseous can be filled.
  • the encapsulation protects the arrester against contact reached. To keep the dimensions of the encapsulation low and around the To load individual varistors electrically evenly at the same time, takes the Encapsulation also connected to the high-voltage electrode element on which controls the operation of the arrester inside the enclosure acting electric field serves.
  • the active part To manufacture the active part, a stack of varistors and two Terminal electrodes, one of which is the high voltage electrode, under Forming a varistor column or a portion of this column containing Mounting unit braced and subsequently the field control on the Mounting unit is attached.
  • the surge arrester In the manufacture of the surge arrester are the thus created active part and the field control in the Encapsulation used,
  • This field control element homogenizes the electrical field acting inside the housing during operation of the arrester, so that the varistors arranged in the varistor column or in the varistor columns are loaded more or less uniformly.
  • the field control element can be formed by concentrically arranged to the column axis, electrically conductive capacitor pads, which are held in an insulating body (EP 0 036 046 B1), along the column axis arranged and spaced apart in the axial direction capacitor shields have (EP 0 050 723 B1) or may be formed by a shielded at high voltage potential shielding electrode having a spherically curved surface portion.
  • stress control tasks can be solved by means of stress-controlling material, in particular a polymer-based composite and a suitably-formed filler embedded in the polymer.
  • a polymer-based composite and a suitably-formed filler embedded in the polymer.
  • the filler is in this case formed by Mikrovaristoren, which consist of small, substantially spherical zinc oxide particles. These particles are doped with various metal oxides such as Sb 2 O 3 , Bi 2 O 3 , Cr 2 O 3 and Co 3 O 4 and are sintered at temperatures between 900 ° C and 1300 ° C.
  • the sintered particles Like a varistor, the sintered particles have nonlinear electric field strength dependent electrical properties. At low field strengths, the particles behave as an insulator, and as the field strength increases, the particles become more conductive. Because of these nonlinear electrical properties, the polymeric composite has good field control properties.
  • the object is based, an active part of the type mentioned for an encapsulated To provide surge arrester, which is simple and the Dimensions of encapsulation significantly reduced, and at the same time a procedure specify, with which this active part are easily and inexpensively manufactured can.
  • the field control element is on the varistor column and contains one of a polymeric matrix and one in the matrix embedded filler composite formed when loaded with a alternating electric field of up to 100Hz a dielectric constant between 5 and 45 and / or has a non-linear current-voltage characteristic. That from the Compound-fabricated field control element has opposite one usually made of metal or an electrically conductive plastic Field control on a low conductivity. Therefore, that can Field control be brought very close to the varistor column. Accordingly, the active part has a low across the varistor column Diameter and so can the dimensions of the encapsulation as well as Isolators, which are intended to hold the active part can be reduced.
  • the relatively high dielectric constant of the field control element and / or the non-linear Current-voltage characteristic also cause a homogenization of the electric field and thus prevent overloading of individual varistors Varistor.
  • a particularly high surge voltage resistance, as in Type tests of surge arresters are required, the active part after the Invention on when the field control a non-linear current-voltage characteristic having.
  • the filler is a material of high conductivity, in particular conductivity black, and / or high dielectric constant, e.g. a titanate, preferably barium titanate, contains and / or microvaristors.
  • the active part or a surge arrester containing this active part after Invention when at least a part of the filler contains microvaristors.
  • the electrical resistance is an intrinsic property of the microvaristors, and not - or only very slightly - the dispersion of the microvaristors in the Depending on the polymer matrix, this property of the microvaristors can therefore with great reproducibility can be set.
  • the good reproducibility becomes This additionally increases that a filled with micro varistors polymer in the A higher compared to an unfilled polymer or to an insulating gas Has thermal conductivity. The higher thermal conductivity causes stronger Load the varistor column a better heat transfer away from the Varistor.
  • the active part or a surge arrester according to the invention containing this active part Field control at least one with the high voltage electrode connected longitudinal portion which typically has a quarter of Total length of the varistor column is.
  • the field control element can conveniently on the extend the entire length of the varistor column.
  • Such a field control element has also manufacturing advantages, as it with one of the two electrodes the active part adjacent mold can be made very easy and Accordingly, the manufacturing cost of the active part reduced.
  • At least a portion of the field control may be on the field control
  • the lateral surface of the varistor column rest. Local field inhomogeneities in the area the varistor column are effectively prevented.
  • Such a trained Active part has manufacturing advantages, as by pouring one easily handling filler-free polymer on the varistor column or on several optionally provided varistor columns a solid cylinder is achieved on the the field control, for example, by winding or spraying the filler and polymer-containing composite are applied in a simple manner can.
  • a field control can be used which at least two by an electrically insulating layer from each other having separate field-controlling layers. These layers have an advantage different electrical properties and / or extend differently far over the length of the varistor column.
  • the thickness of the field control element transverse to the column axis is generally off manufacturing reasons over the length of the varistor column constant. to Solution of certain field control tasks, but it may be advantageous if the Thickness varies along the length of the varistor column. So it can be for example to Increasing the electrical conductivity at one end of the active column advantageous be there if there the area cross section of the field control element is higher and the Cross-sectional area decreases continuously over the length of the active part.
  • the inventive active part can reach after the onset of the Active part in the enclosure a remaining residual volume with solid, liquid and / or gaseous insulating material.
  • the surge arresters shown in Figures 1 to 5 have each one designed as an open pot cylindrically symmetric metal encapsulation 1, in which an active part 2 is arranged.
  • the active part contains a varistor column 3, an electrode 4 which can be led to high voltage, which can be led to earth potential Electrode 5 and one between the varistor column 3 and the encapsulation. 1 arranged and with the high voltage electrode 4 electrically conductive connected element 6 for controlling a in operation of the arrester inside the Encapsulation 1 effective electric field.
  • the varistor column 3 contains a plurality of stacked solid cylindrical Varistor elements 7 made of nonlinear resistance material, approximately on the basis of Metal oxide, in particular of suitably doped ZnO.
  • the varistor column 3 is mechanically stabilized by electrically insulating running loops 8, the forming a stable mounting unit with preload on the two Electrodes 4 and 5 ( Figures 1 to 3 and 5) or on any two electrodes one of which is the high voltage electrode 4 and the other the groundable electrode 5 may be (Fig.4).
  • the high voltage electrode 4 is through a through the opening of the pot guided current conductor 9 arranged with a outside of the enclosure 1 Plug contact 10 electrically connected.
  • the groundable electrode 5 is over a opening provided in the bottom of the pot with the aid of a relative to the Encapsulation 1 electrically insulated conductor 11 to an outside of the Encapsulation 1 arranged disposable power connector 12 out.
  • the field control element 6 is held directly or indirectly on the varistor column. It contains one of a polymeric matrix and one embedded in the matrix Filler formed composite that under load with an electric Alternating field of up to 100Hz a dielectric constant between 5 and 45, preferably between 8 and 30, and / or a non-linear current-voltage characteristic having.
  • the polymeric matrix is made from a solid silicone based elastomer but may also be derived from any other elastomer, e.g. an EPDM or a butyl rubber.
  • suitable for the polymeric matrix Polymers are thermoplastics, such as PE, PVC, PBT or EVA, duromers, for example based on epoxy or polyurethane, or thermoplastic elastomers.
  • the Polymeric matrix may also consist of copolymers or mixtures of various Polymer components exist.
  • Microvaristors As a material for the embedded in the polymeric matrix filler Microvaristors used. Another suitable filler is conductivity black, which is to be introduced into the polymer in such a high concentration that the Dielectric constants of the resulting composite at 50 Hz at about 10 to 30 lie. Also suitable as a filler is a ceramic with a high dielectric constant, like barium titanate.
  • the microvaristors are formed of doped and sintered zinc oxide particles. Typical compositions, particle sizes and sintering conditions are the referred to at the beginning of the prior art.
  • oxides of typically Bi, Co, Cr, Mn and Sb, and optionally other elements, such as Al, B, Fe, Ni, Si, doped ZnO granules were heated at temperatures between 900 ° C and sintered at 1300 ° C.
  • the microvaristor powder forming on sintering became sieved to a desired particle size fraction of, for example, 100 ⁇ m.
  • metallic filler fillers can be mixed into this powder fraction and are sintered to the micro varistors.
  • the sieved powder is z. B.
  • the volume fraction of the filler at Composite is typically between 20 and 45 percent.
  • the thus prepared composite was molded into the field control element 6 in FIG a conventional injection molding process on the Varistor Tarle 3 or a Section thereof or on an insulating body 14 surrounding the varistor column (Fig.3) applied. If the silicone is liquid, then the silicone filler mixture be applied by direct casting. After networking the Composite can in a second process step designed as silicone Insulating material of the body 13 are injection-molded.
  • the field control element 6 made of the composite faces usually a metal or an electrically conductive plastic produced field control on a low conductivity. Therefore it can be very can be brought close to the Varistorcicle 6 and can accordingly after installation of the active part 2 in the enclosure 1, the dimensions of the enclosure and insulators provided for holding the active part 2 are reduced become.
  • the relatively high dielectric constant of the field control element and / or the Non-linear current-voltage characteristic also cause when operating the arrester a uniformity of the electric field and prevent such a Overloading of individual varistors 7 of the varistor column 3.
  • Ceramic microvaristors will increase the thermal conductivity of the composite Field control element 6 substantially increased compared to a filler-free polymer.
  • a surge arrester having the active part according to the invention points to a surge arrester with a conventional built active part to a much higher surge voltage. Therefore Its dimensions can be reduced with comparable properties.
  • the field control element 6 is optionally using an adhesion-promoting coating on the outer surface of the High voltage electrode 4 and a lateral surface of a with the High voltage electrode connected portion of the varistor column 3 attached. Characterized in that the field control element 6 over the with high voltage potential stretches acted areas of the active part 2, the electric field in Homogenized this electrically particularly stressed areas.
  • the fact that the field control electrode is mounted on the varistor column is A space - saving design enables local field inhomogeneities in the field Area of Varistorkla 3 effectively prevented and at the same time becomes a particularly good dissipation of heat generated in the varistor column 3 to the outside causes.
  • this extends on the varistor column 3 applied field control element 6 from the high voltage electrode 4 via the entire varistor column 3 to the ground electrode 5. Therefore, is now above the entire varistor column homogenizes the electric field and so can all Varistors 7 of the varistor column are controlled with good accuracy. moreover can be equipped with such a field control active part be made very easy, as in the production of one of the two Electrodes 4 and 5 of the active part 2 fitting mold can be used.
  • the field control element 6 of the on Jacket surface of the varistor column held insulating 14 is supported.
  • Such a thing trained active part 2 has manufacturing advantages, as by Pouring an easy-to-use filler-free polymer on the Varistorcicle 3 a full cylinder is reached, on the field control element. 6 for example, by winding or spraying the composite or byshrinking a composite body holding the carrier in a simple manner can be applied.
  • the thickness of the field control element 6 transverse to the axis of the varistor column 3 is in general for manufacturing reasons over the length of the varistor column constant. To solve certain field control tasks, however, it is advantageous that the thickness of the field control element 6 varies over the length of the varistor column 3. So It may, for example, to increase the electrical conductivity of the with High voltage acted upon end (electrode 4) of the active column be advantageous if there the area cross section of the field control element 6 is higher and the Cross-sectional area continuously over a section or possibly over the entire Length of the active part 2 decreases. Such an embodiment of the active part is made 4 can be seen.
  • the varistor column 3 may consist of two assembly units 31 and 32, which each two Electrodes, an interposed stack of varistors 7 'and 7 "and loop-shaped clamping elements 8 'and 8 "respectively.
  • the two electrodes are at the mounting unit 31, the high voltage electrode 4 and a Intermediate electrode 15 and the mounting unit 32, the intermediate electrode 15 and the groundable electrode 5.
  • the intermediate electrode 15 may be separable, so that the two assembly units 31, 32 transported separately can be.
  • a field control element 6 used, which two by an electrically insulating layer 61 from each other having separate field controlling layers 62 and 63.
  • the layers 62 and 63 allow a very accurate field control and can be different have electrical properties and / or extend - as shown in the figure it can be seen - differently far over the length of the varistor column.
  • the exemplary embodiment according to FIG. 6 shows that the Active part 2 not only contains a varistor column, but also two varistor columns 3 ', 3 "or optionally also three (indicated by a behind the columns 3 ', 3" arranged varistor column 3 '' ') and may contain more varistor columns.
  • the varistors 7 of both columns via power connector 16 in Series connected these columns contain in addition to the varistors 7 and two the Column front end electrodes 17 ', 17 ", 17' '' also insulating pieces 18, which arranged the electrical potentials of adjacent in the columns Varistors 7 or a varistor 7 and an electrode 17 '' 'separate.
  • the electrode 17 'with the High voltage electrode 4 electrically connected or integrated in this and over the electrically isolated by means of a feedthrough insulator 91 from the Encapsulation 1 guided conductor 9 with a high voltage source, such as a against overvoltages to be protected line electrically connected. Accordingly, the electrode 17 "with the groundable electrode 5 is electrically conductively connected or integrated into this and isolated from the enclosure 1 guided conductor 11 is placed on ground.
  • the field control element 6 consists of one of the electrodes 4, 17 'and 17' '' enclosing subfield control element 6 'and an adjoining thereto Subfield control 6 ", which has the highest electrical potential acted upon section of the varistor column 3 'encloses. As shown the two subfield control elements 6 ', 6 "consist of different ones Composites. The subfield control element 6 'may be cast by, the Subfield control 6 "applied by shrinking or winding become.
  • the field control element 6 consists of a single part, it can also be so be formed that it all Varistorklalen 3 ', 3 ", 3"' in the form of a jacket encloses together.
  • the residual volume 19 of the gas-tight enclosure 1 is filled with an insulating gas, typically SF 6 .

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
  • Gas-Insulated Switchgears (AREA)
EP04405343A 2004-06-04 2004-06-04 Composant actif pour limiteur de surtension encapsulé Withdrawn EP1603140A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP04405343A EP1603140A1 (fr) 2004-06-04 2004-06-04 Composant actif pour limiteur de surtension encapsulé
JP2005155324A JP4680680B2 (ja) 2004-06-04 2005-05-27 ガス密閉型のサージ・アレスタのための動作部分
KR1020050046688A KR101138941B1 (ko) 2004-06-04 2005-06-01 캡슐형 서지 피뢰기용 능동부, 캡슐형 서지 피뢰기, 및 능동부 제조 방법
CN2005100735850A CN1707704B (zh) 2004-06-04 2005-06-02 用于封装式电涌放电器的有源器件

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04405343A EP1603140A1 (fr) 2004-06-04 2004-06-04 Composant actif pour limiteur de surtension encapsulé

Publications (1)

Publication Number Publication Date
EP1603140A1 true EP1603140A1 (fr) 2005-12-07

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EP04405343A Withdrawn EP1603140A1 (fr) 2004-06-04 2004-06-04 Composant actif pour limiteur de surtension encapsulé

Country Status (4)

Country Link
EP (1) EP1603140A1 (fr)
JP (1) JP4680680B2 (fr)
KR (1) KR101138941B1 (fr)
CN (1) CN1707704B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007027411A1 (de) * 2007-06-11 2008-12-18 Siemens Ag Überspannungsableiteranordnung
WO2012168112A1 (fr) * 2011-06-10 2012-12-13 Siemens Aktiengesellschaft Coupe-circuit de surtension
EP2713375A1 (fr) * 2012-09-28 2014-04-02 Siemens Aktiengesellschaft Paratonnerre
EP1993177A4 (fr) * 2006-03-08 2016-01-20 Fuji Electric Co Ltd Limiteur
EP2609157A4 (fr) * 2010-08-26 2016-11-16 3M Innovative Properties Co Composition ayant des caractéristiques courant-tension non linéaires

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200841363A (en) * 2007-01-22 2008-10-16 Swcc Showa Cable Sys Co Ltd Arrestor
JP4809379B2 (ja) * 2007-01-22 2011-11-09 昭和電線ケーブルシステム株式会社 アレスタおよびアレスタの取付部
JP5150111B2 (ja) 2007-03-05 2013-02-20 株式会社東芝 ＺｎＯバリスター粉末
CN101707105B (zh) * 2009-11-16 2015-08-05 郭道林 可触摸拔插式避雷器
CN113328423B (zh) * 2021-06-01 2022-11-08 国网湖北省电力有限公司超高压公司 一种高压电力的浪涌保护器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036046A1 (fr) * 1980-03-19 1981-09-23 BBC Aktiengesellschaft Brown, Boveri & Cie. Dérivateur de surtension encapsulé
EP0875087B1 (fr) * 1996-01-16 2000-11-29 RAYCHEM GmbH Limitation des contraintes d'origine electrique
EP1083579A2 (fr) * 1999-09-07 2001-03-14 ABB Hochspannungstechnik AG Limiteur de surtension
EP1274102A1 (fr) * 2001-07-02 2003-01-08 ABB Schweiz AG Composé polymère avec une caractéristique courant-tension non linéaire et procédé de fabrication d'un composé polymère
EP1337022A1 (fr) * 2002-02-18 2003-08-20 ABB Schweiz AG Corps enveloppant pour un câble haute tension et élément de câble, qui est pourvu d'un tel corps enveloppant

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
JPS60257106A (ja) * 1984-06-01 1985-12-18 松下電器産業株式会社 サ−ジ吸収素子
DE19622140A1 (de) * 1996-06-01 1997-12-04 Asea Brown Boveri Überspannungsableiter
DE19813135A1 (de) * 1998-03-25 1999-09-30 Asea Brown Boveri Überspannungsableiter
JP2001015304A (ja) * 1999-06-30 2001-01-19 Toshiba Corp ポリマー形の避雷器
ATE288127T1 (de) * 2002-07-15 2005-02-15 Abb Schweiz Ag Steckbarer elektrischer apparat, insbesondere überspannungsableiter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036046A1 (fr) * 1980-03-19 1981-09-23 BBC Aktiengesellschaft Brown, Boveri & Cie. Dérivateur de surtension encapsulé
EP0875087B1 (fr) * 1996-01-16 2000-11-29 RAYCHEM GmbH Limitation des contraintes d'origine electrique
EP1083579A2 (fr) * 1999-09-07 2001-03-14 ABB Hochspannungstechnik AG Limiteur de surtension
EP1274102A1 (fr) * 2001-07-02 2003-01-08 ABB Schweiz AG Composé polymère avec une caractéristique courant-tension non linéaire et procédé de fabrication d'un composé polymère
EP1337022A1 (fr) * 2002-02-18 2003-08-20 ABB Schweiz AG Corps enveloppant pour un câble haute tension et élément de câble, qui est pourvu d'un tel corps enveloppant

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JIANG G ET AL: "Measurement of non-linear dielectric properties - theoretical analysis", ELECTRICAL INSULATION AND DIELECTRIC PHENOMENA, 1997. IEEE 1997 ANNUAL REPORT., CONFERENCE ON MINNEAPOLIS, MN, USA 19-22 OCT. 1997, NEW YORK, NY, USA,IEEE, US, 19 October 1997 (1997-10-19), pages 206 - 209, XP010255794, ISBN: 0-7803-3851-0 *
STRUEMPLER R ET AL: "SMART VARISTOR COMPOSITES", INTELLIGENT MATERIALS AND SYSTEMS. PROCEEDINGS OF TOPICAL SYMPOSIUM ON INTELLIGENT MATERIALS AND SYSTEMS OF THE CIMTEC- WORLD CERAMICS CONGRESS AND FORUM ON NEW MATERIALS, XX, XX, 28 June 1995 (1995-06-28), pages 15 - 22, XP001051331 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1993177A4 (fr) * 2006-03-08 2016-01-20 Fuji Electric Co Ltd Limiteur
DE102007027411A1 (de) * 2007-06-11 2008-12-18 Siemens Ag Überspannungsableiteranordnung
EP2609157A4 (fr) * 2010-08-26 2016-11-16 3M Innovative Properties Co Composition ayant des caractéristiques courant-tension non linéaires
WO2012168112A1 (fr) * 2011-06-10 2012-12-13 Siemens Aktiengesellschaft Coupe-circuit de surtension
KR101476580B1 (ko) * 2011-06-10 2014-12-24 지멘스 악티엔게젤샤프트 과전압 차단기
EP2713375A1 (fr) * 2012-09-28 2014-04-02 Siemens Aktiengesellschaft Paratonnerre
WO2014048711A1 (fr) * 2012-09-28 2014-04-03 Siemens Aktiengesellschaft Dispositif de protection contre les surtensions

Also Published As

Publication number Publication date
JP2005348596A (ja) 2005-12-15
KR101138941B1 (ko) 2012-04-25
CN1707704A (zh) 2005-12-14
CN1707704B (zh) 2010-12-01
KR20060046368A (ko) 2006-05-17
JP4680680B2 (ja) 2011-05-11

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