EP1977434A1 - Coupe-circuit de surtension de type cage et son procédé de production - Google Patents

Coupe-circuit de surtension de type cage et son procédé de production

Info

Publication number
EP1977434A1
EP1977434A1 EP06830827A EP06830827A EP1977434A1 EP 1977434 A1 EP1977434 A1 EP 1977434A1 EP 06830827 A EP06830827 A EP 06830827A EP 06830827 A EP06830827 A EP 06830827A EP 1977434 A1 EP1977434 A1 EP 1977434A1
Authority
EP
European Patent Office
Prior art keywords
surge arrester
end fitting
hole
varistor
holes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06830827A
Other languages
German (de)
English (en)
Other versions
EP1977434B1 (fr
Inventor
Hartmut Klaube
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.)
Tridelta Ueberspannungsableiter GmbH
Original Assignee
Tridelta Ueberspannungsableiter GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=37814196&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1977434(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Tridelta Ueberspannungsableiter GmbH filed Critical Tridelta Ueberspannungsableiter GmbH
Publication of EP1977434A1 publication Critical patent/EP1977434A1/fr
Application granted granted Critical
Publication of EP1977434B1 publication Critical patent/EP1977434B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H01C7/123—Arrangements for improving potential distribution
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49082—Resistor making

Definitions

  • the invention relates to a surge arrester with cage design as it is known for example from JP 62-149511 (Anmeldunguiruner ⁇ , and a method for
  • surge arresters are connected between current-carrying lines and ground in the case of an overvoltage in the line, thus protecting other components of the power network.
  • a surge arrester contains a stack of varistor blocks, which is held between two connection elements or end fittings. This arrangement is accommodated in a housing.
  • GPP rods glass fiber reinforced plastic rods
  • a problem with such surge arresters is to secure the reinforcing elements to the end fittings, so that even with mechanical stresses, such as those mounted outdoors
  • this problem is solved in that in the end fittings grooves in the stack direction of the varistor blocks are provided, in which the reinforcing elements are inserted and wherein the end of the reinforcing elements is provided with a thread, on which a nut is screwed, which is larger in diameter than the groove in the end fitting, and so holds the reinforcing element substantially by positive engagement.
  • the glass fiber reinforced plastic rods can also be held by pins or screws, perpendicular to the longitudinal direction of the rods to the end fittings.
  • Screwing leads to a concentration of the electric field and the risk of partial discharges.
  • German patent application DE 199 40 939 shows a further possibility to hold the reinforcing elements in the end fittings. This is done in a conical
  • Drill hole of the end fitting used in the direction of the stack center of the varistor blocks tapered sleeve with movable ⁇ eitenofficen, which holds as a clamping sleeve, similar to a wedge, the associated reinforcing element under train firmly by frictional or non-positive connection.
  • the invention has the object, a
  • FIG. 1 is an overall view of a surge arrester with partially cutaway outer casing
  • FIG. 2 shows a plan view of the end fitting of the surge arrester according to the invention
  • FIG. 3 shows a sectional view through an end fitting according to FIG.
  • the surge arrester with a cage design shown in FIG. 1 contains at least one varistor block 1.
  • varistor blocks known ceramic disks with a voltage-dependent resistor (variable resistor) can be used. At low voltages they work as near-perfect insulators, while at high voltages they have good conductivity.
  • commercially available varistor blocks are manufactured on the basis of zinc oxide (ZnO).
  • ZnO zinc oxide
  • the invention is not limited to such zinc oxide surge arresters, and other metal oxides as well as silicon carbide can be used for the varistor block, for example.
  • further blocks, such as metal blocks, or spark gaps may be included in the stack to adapt the length of the surge arrester to the requirements of the particular application.
  • Common varistor blocks 1 are formed as circular cylinders with a diameter of for example 5 cm and a height of about 4 cm. On both sides of the varistor blocks 1 aluminum electrodes not shown in detail are applied to ensure a better contact. It is also customary to lay between the Varistorblöcken 1 to further improve the contact also not shown thin aluminum discs or spring elements.
  • a plate spring or the like can be present to ensure beizu ⁇ retain the contact in the case of temperature fluctuations.
  • a stack formed by stacking such varistor blocks 1 and any metal blocks is held between two end fittings 3 in the surge arrester shown in FIG.
  • the end fittings 3 are usually formed of aluminum or stainless steel and configured such that they can be easily integrated into existing electrical installations or power grids, for example by a protruding from the surge arrester central screw 4, which makes good contact with the Varistorblöcken 1 well.
  • Surge arrester surrounded by an outer housing 5 made of silicone.
  • the housing is formed by spraying or pouring.
  • glass fiber reinforced plastic rods or ropes 9 are clamped as reinforcing elements between the two end fittings 3 regularly. These hold the Varistorblöcke 1 between the two end fittings 3 together under tensile stress.
  • rods 9 the anchoring elements will be referred to as rods 9, without any limitation of the invention.
  • Fig. 2 shows a plan view of an end fitting of a surge arrester according to the invention.
  • the end fitting 3 is formed substantially as a circular-cylindrical block whose diameter is larger than that of the varistor blocks.
  • the stacking direction runs along the circumference of the end fitting
  • the glass fiber reinforced plastic rods 9 are received in through holes 11 through the end fittings 3.
  • the glass fiber reinforced plastic rods are held by suitable means, such as wedges, wedge sleeves, gluing, Crimpers or the like.
  • the end fitting additionally has at least a second one
  • This through hole 15, in which no reinforcing element is received, serves as a flow connection between the two sides of the end fitting during the formation of the outer casing by ⁇ Spritzne or casting.
  • the end of the end fitting facing away from the stack of varistor blocks is provided with a running groove or groove 17 in which the first and second through holes 11 and 15 open.
  • the groove is bounded by a projecting outer edge 19 and an inner edge 21.
  • the cage is first formed from two end fittings 3, the varistor blocks 1 and the glass fiber reinforced rods 9, in fixed connection with the end fittings 3.
  • This cage is then placed in a mold that seals against respective shoulders 23 of the end fitting as shown in FIG.
  • the mold can be designed so that simultaneously with the outer housing 5 and the screens 7 are formed by spraying or molding of silicone.
  • Low viscosity silicone as preferred for this application, is relatively expensive. Therefore, as can be seen in Fig. 1, the housing is retracted in the region of the varistor blocks 1, i. has a smaller cross section than in the region of the overlap with the end fitting 3.
  • the second through holes 15 are also formed in the end fittings 3.
  • the outside of the surge arrester facing the end of these holes is, as stated, mounted in the groove 17.
  • a plurality of second through holes are provided. It is also possible, instead of the continuous circumferential groove 17, to provide a plurality of part-serration grooves, each of which extends over only one segment of the circumference, each first through-hole 11 together with at least one second through-hole 11
  • Through hole 15 opens in one of Operasegmetnuten 17.
  • a plate 17 is held by means of a central screw 4 in the central bore with internal thread 23 of the end fitting 3, shown in Fig. 1 plate 27 closes at the edge of the end fitting 3 flat with the edge 19 tightly, with a cavity in the Area of the groove 17 remains. If required, individual vent holes can be provided in the plate.
  • one or more inlet openings for the low-viscosity silicone in the area of the screens 7 and corresponding ventilation holes, also in the area of the screens 7, are usually provided.
  • the silicone penetrates the mold, forms the outer casing 5 with the sheds 7, passes through the through holes 15 and the grooves 17 and further into the through holes 11 with the glass fiber reinforced rods.
  • the through holes 11 are hermetically sealed with the glass fiber reinforced plastic rods 9 from the outside and protected against moisture in one operation with the formation of the outer casing.
  • the inner diameter of the second through-holes 15 should be chosen such that the low-viscosity silicone can flow well through the casting process.
  • 3 shows a section through an end fitting along the line A-A in FIG. 2. As can be seen, the second through-holes 15 have a significantly smaller cross-section than the first through-holes 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
  • Fuses (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un coupe-circuit de surtension de type cage. Son procédé de production consiste à réaliser un boîtier externe (5) par enrobage par extrusion ou par moulage d'un module composé de deux garnitures terminales (3), d'une pluralité de blocs à varistance (1), d'au moins un élément de renfort (9) et d'une première série de trous traversants (11) destinés à l'élément de renfort (9), puis à étanchéifier le boîtier par coulage ou pulvérisation de silicone par une deuxième série de trous traversants réalisés dans les garnitures terminales (3), le silicone pénétrant de l'extérieur dans ces trous traversants (11) pour sceller le boîtier contre l'eau ou l'humidité.
EP06830827A 2006-01-25 2006-12-22 Coupe-circuit de surtension de type cage et son procédé de production Not-in-force EP1977434B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006003579A DE102006003579B4 (de) 2006-01-25 2006-01-25 Überspannungsableiter mit Käfig-design und Herstellungsverfahren für diesen
PCT/EP2006/070196 WO2007085338A1 (fr) 2006-01-25 2006-12-22 Coupe-circuit de surtension de type cage et son procédé de production

Publications (2)

Publication Number Publication Date
EP1977434A1 true EP1977434A1 (fr) 2008-10-08
EP1977434B1 EP1977434B1 (fr) 2009-07-29

Family

ID=37814196

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06830827A Not-in-force EP1977434B1 (fr) 2006-01-25 2006-12-22 Coupe-circuit de surtension de type cage et son procédé de production

Country Status (15)

Country Link
US (1) US8009402B2 (fr)
EP (1) EP1977434B1 (fr)
JP (1) JP4865816B2 (fr)
KR (1) KR101008134B1 (fr)
CN (1) CN101336459B (fr)
AR (1) AR059152A1 (fr)
AT (1) ATE438186T1 (fr)
AU (1) AU2006336899B2 (fr)
BR (1) BRPI0621242A2 (fr)
DE (3) DE102006003579B4 (fr)
HK (1) HK1126310A1 (fr)
MX (1) MX2008009191A (fr)
RU (1) RU2378727C1 (fr)
WO (1) WO2007085338A1 (fr)
ZA (1) ZA200805315B (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090141420A1 (en) * 2007-11-29 2009-06-04 Corning Incorporated Packaged Capacitive Device And Methods Of Making The Same
JP5417060B2 (ja) * 2009-06-30 2014-02-12 株式会社東芝 ポリマー避雷器
DE102009035646A1 (de) 2009-07-29 2011-02-10 Siemens Aktiengesellschaft Endarmatur für einen Überspannungsableiter und Verfahren zur Herstellung eines Überspannungsableiters
DE102010043655B4 (de) * 2010-11-09 2012-08-30 Siemens Aktiengesellschaft Überspannungsableiter mit dehnbarer Manschette
DE102011078210A1 (de) 2011-06-28 2013-01-03 Siemens Aktiengesellschaft Überspannungsableiter
DE102011078207A1 (de) 2011-06-28 2013-01-03 Siemens Aktiengesellschaft Überspannungsableiter
EP2600358B1 (fr) * 2011-12-02 2014-04-30 ABB Technology AG Parafoudre
DE102012207928A1 (de) * 2012-05-11 2013-11-14 Siemens Aktiengesellschaft Überspannungsableiter
DE102012207914A1 (de) 2012-05-11 2013-11-14 Siemens Aktiengesellschaft Überspannungsableiter
JP2014022632A (ja) * 2012-07-20 2014-02-03 Toshiba Corp 避雷器およびその組立て方法
JP5971719B2 (ja) * 2012-10-30 2016-08-17 株式会社東芝 避雷器
DE102015007933B4 (de) 2015-06-19 2017-06-22 Tridelta Überspannungsableiter Gmbh Überspannungsableiter, Verfahren zur Herstellung eines Überspannungsableiters
DE102016206176A1 (de) 2016-04-13 2017-10-19 Siemens Aktiengesellschaft Überspannungsableiter
WO2018065034A1 (fr) 2016-10-04 2018-04-12 Siemens Aktiengesellschaft Dispositif coupe-circuit de surtension et son procédé de réglage
US10304598B1 (en) * 2018-01-19 2019-05-28 Te Connectivity Corporation Surge arresters and related assemblies and methods
CN110211755A (zh) * 2019-05-31 2019-09-06 国网湖南省电力有限公司 笼式避雷器绝缘筒和防爆避雷器
US11295879B2 (en) 2020-07-24 2022-04-05 TE Connectivity Services Gmbh Surge arresters and related assemblies and methods
CN115036087B (zh) * 2022-06-23 2024-06-25 山东泰开电力电器有限公司 一种避雷器芯体的安装结构及其基于激光定位的装配方法

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US4364854A (en) * 1980-12-31 1982-12-21 Phillips Petroleum Company Acid gelling aluminum phosphate from concentrated mass and catalyst containing same
JPS6127126Y2 (fr) * 1981-02-19 1986-08-13
JPS63312602A (ja) * 1987-06-16 1988-12-21 Ngk Insulators Ltd 避雷器ユニット
US5363266A (en) 1992-06-18 1994-11-08 Raychem Corporation Electrical surge arrester
DE4306691A1 (de) * 1993-03-04 1994-11-03 Abb Management Ag Ueberspannungsableiter
JPH06310307A (ja) * 1993-04-21 1994-11-04 Meidensha Corp 屋内−屋外兼用コンパクト避雷器
US5444429A (en) * 1993-11-15 1995-08-22 Hubbell Incorporated Electrical assembly with surge arrester and insulator
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JP4342078B2 (ja) * 2000-04-07 2009-10-14 株式会社東芝 避雷器
JP4537544B2 (ja) * 2000-07-07 2010-09-01 九州電力株式会社 送配電用サージ吸収器の製造方法
JP2002175905A (ja) * 2000-12-07 2002-06-21 Mitsubishi Electric Corp 避雷器
DE10104393C1 (de) * 2001-01-19 2002-04-04 Siemens Ag Stützplatte mit mindestens einer durchgehenden Öffnung und Hochspannungs-Überspannungsableiter mit einer derartigen Stützplatte
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Also Published As

Publication number Publication date
ZA200805315B (en) 2009-10-28
KR20080080204A (ko) 2008-09-02
WO2007085338A1 (fr) 2007-08-02
RU2378727C1 (ru) 2010-01-10
CN101336459B (zh) 2011-08-03
BRPI0621242A2 (pt) 2011-12-06
MX2008009191A (es) 2008-10-17
DE102006003579B4 (de) 2007-10-25
KR101008134B1 (ko) 2011-01-13
AR059152A1 (es) 2008-03-12
US20090046408A1 (en) 2009-02-19
HK1126310A1 (en) 2009-08-28
DE202006020436U1 (de) 2008-07-10
CN101336459A (zh) 2008-12-31
JP4865816B2 (ja) 2012-02-01
DE102006003579A1 (de) 2007-09-06
DE502006004414D1 (de) 2009-09-10
JP2009524262A (ja) 2009-06-25
ATE438186T1 (de) 2009-08-15
AU2006336899B2 (en) 2013-03-07
US8009402B2 (en) 2011-08-30
EP1977434B1 (fr) 2009-07-29
AU2006336899A1 (en) 2007-08-02

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