EP0774157B1 - Elektrischer isolator aus silikongummi für hochspannungsanwendungen - Google Patents

Elektrischer isolator aus silikongummi für hochspannungsanwendungen Download PDF

Info

Publication number
EP0774157B1
EP0774157B1 EP95944010A EP95944010A EP0774157B1 EP 0774157 B1 EP0774157 B1 EP 0774157B1 EP 95944010 A EP95944010 A EP 95944010A EP 95944010 A EP95944010 A EP 95944010A EP 0774157 B1 EP0774157 B1 EP 0774157B1
Authority
EP
European Patent Office
Prior art keywords
voltage
electrical high
insulator according
voltage insulator
silicone rubber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95944010A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0774157A1 (de
Inventor
Martin Kuhl
René MAINARDIS
Peter Besold
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.)
LIW Composite GmbH
Original Assignee
Lapp Insulator 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
Application filed by Lapp Insulator GmbH filed Critical Lapp Insulator GmbH
Publication of EP0774157A1 publication Critical patent/EP0774157A1/de
Application granted granted Critical
Publication of EP0774157B1 publication Critical patent/EP0774157B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/02—Suspension insulators; Strain insulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/32—Single insulators consisting of two or more dissimilar insulating bodies

Definitions

  • the invention relates to an electrical high-voltage insulator made of plastic comprising at least one glass fiber rod, at least one the glass fiber rod surrounding protective cover made of silicone rubber, which in the direction of the longitudinal axis of the Isolator-arranged, concentric, umbrella-shaped curvatures has a convex top and a concave or flat bottom form, as well as metal fittings on both insulator ends.
  • High voltage insulators for overhead lines have been out for a long time ceramic, electrically insulating materials such as porcelain or glass manufactured.
  • isolators containing a glass fiber core and win an umbrella cover made of plastic in composite construction is becoming increasingly important, because they have a number of advantages, in addition to one lower weight also improved mechanical resistance count towards projectiles from firearms.
  • the umbrella covers of such Composite insulators are mostly made of cycloaliphatic epoxy resins Polytetrafluoroethylene, from ethylene-propylene-diene rubbers or from Silicone rubber built.
  • Composite insulators with a shield cover made of silicone rubber face Composite insulators made of other shielding materials and also opposite conventional isolators have the advantage of being excellent Isolation properties when used in areas with heavily soiled Own atmosphere. That is why silicone rubber insulators are increasingly becoming one used existing overhead lines with electrical insulation problems that resulting from atmospheric contaminants, by using the conventional insulators against composite insulators with a shield cover made of silicone rubber.
  • High voltage insulators for overhead lines in composite construction with a Umbrellas made of silicone rubber are used with umbrellas for many applications provided that are flat on their underside and can according to DE-A 27 46 870 can be manufactured by using individually prefabricated umbrellas with radial Preload on a glass fiber rod covered with silicone rubber put on and vulcanized together with it.
  • the one for the Insulator operation can be determined by the number and the crawl Diameter of the screens can be obtained.
  • At very strong atmospheric Contamination in the area of use of the insulators must be the creepage distance Insulators should be larger than in atmospheric areas of use Pollution.
  • GB-A-2 089 141 describes plastic composite insulators in which the individual prefabricated umbrellas were pushed onto a glass fiber rod and where the shades, which can be made of silicone rubber, are on the underside can be designed flat or according to the figures with ribs.
  • the shield joints should be connected by metal rings or hollow cylinders be electrically bridged.
  • WO 92/10843 teaches cap insulators in which there is at least one porcelain portion a screen made of a polymeric material, e.g. Polydimethylsiloxane or Dimethylsiloxane / methylvinylsiloxane copolymer, is attached.
  • the bottom of the Umbrellas can have ribs.
  • the individual cap insulators can over metallic connecting links are coupled to isolator chains.
  • EP-A-0 033 848 discloses a method for producing a composite plastic insulator, in which the GRP rods by injection molding or injection molding covered with umbrellas using multi-part shapes can.
  • the shield cover material is Silicone rubber listed.
  • the shield cover including the bulges made of an HTV silicone rubber consists essentially of polyvinyldimethylsiloxanes and fillers and is crosslinked with the help of peroxides or that it is made of another silicone rubber is based on polyorganodimethylsiloxanes that the Shore A hardness the shield cover including the bulges is more than 40 and that the at least one groove (4) on the underside of the curved protrusions exhibit.
  • the grooves should be there a minimum depth, measured as the distance from the top to the valley, from have at least 1 mm, preferably their depth should be in the range from 5 to 50 mm lie.
  • the width of the grooves measured as the distance between two neighboring peaks, can range from 3 to 200 mm, preferably in Range from 5 to 80 mm. It is further preferred that in the area of the grooves and their edges no sharp corners and tips occur, but these are rounded.
  • the protruding between the grooves protruding webs can be vertically or steeply inclined. at A concentric arrangement of adjacent grooves then results in a cylindrical shape or conical bars.
  • the grooves or webs preferably run concentrically the longitudinal axis, but they can also be guided eccentrically.
  • the ratio of I 4 / d to the value of 5 is to be limited in accordance with IEC publication 815: While the variable I 4 the real creepage distance on the surface of a screen between two points, preferably in cross-section including the Longitudinal axis in the cross-sectional area, designated d stands for the shortest distance between these points by air.
  • Insulators according to the invention can according to that in DE-A-27 46 870 described method can be produced by the screens separately manufactured on a glass fiber rod coated with silicone rubber Radial tension pushed on and with this silicone rubber layer vulcanized together.
  • the procedure allows extensive freedom in the choice of the length of the isolators and the choice of the desired Creepage distances taking into account the limits specified in IEC 815 for Screen projection and screen spacing.
  • HTV hot-temperature crosslinking
  • Other silicone rubbers as far as they are Polyorganodimethylsiloxanes can also be used.
  • Silicone rubbers, which are particularly suitable according to the invention preferably flame retardant, so that the flammability class FVO according to IEC publication 707. This can be done by incorporating the Alumina hydrate filler or use of a platinum-guanidine complex can be achieved.
  • the high voltage tracking resistance HK2 and the high voltage arc resistance HL2 according to DIN VDE 0441 part 1 at least achieved.
  • to Compliance with the high-voltage tracking resistance in HK class 2 must 5 Test specimens in a multi-stage test a voltage of 3.5 kV over 6 hours Persist.
  • To achieve high-voltage arc resistance in HL class 2 10 test specimens must burn for more than 240 seconds Arc can be successfully exposed.
  • the invention High-voltage insulator made of silicone rubber meets the high-voltage diffusion resistance according to class HD2 according to DIN VDE 0441 part 1.
  • the creep path I is taken into account in the profile factor PF, which can be identical to the creep path I d , for example 2p + s I ⁇ 0.7.
  • Figure 4 gives the result of the leakage current measurements over a test time of 1000 hours for the isolators B and VB described in Example 1 in vertical Installation position (lower polygon course) and in horizontal installation position (upper Polygons) again.
  • the signatures identify the two-shielded isolator B and the three-shielded isolator VB.
  • the invention was exemplified above on a high voltage insulator for overhead lines explained in more detail.
  • a high voltage insulator for overhead lines explained in more detail.
  • High-voltage composite insulators with a shield cover made of silicone rubber are used, which are used as post insulators or as hollow insulators be used as a housing for transducers, bushings and the like.
  • the invention can be advantageously used in cases where conventional insulators of specified height in atmospheric Pollution areas electrical problems with flashovers prepare. With the help of the invention, insulators can be built Creepage distance with constant overall height and atmospheric conditions can be adjusted.
  • the isolators according to the invention were designated B1, the isolators according to the state of the art with VB1.
  • the two types of isolators can be used as are considered electrically equivalent, because the striking distances and The creepage distances of both types are the same.
  • All four isolators were made after method described in DE-A-27 46 870. They consisted of the same screen cover material, namely a polyvinyldimethylsiloxane Fillers that have been crosslinked using a peroxide and a Shore A hardness out of 80.
  • the fillers consisted of pyrogenic silica and alumina hydrate.
  • the arc resistance of this material was more than 240 s (HL 2); the high voltage tracking resistance became HK 2 classified, determined according to DIN VDE 0441, part 1.
  • the flame resistance according to IEC publication 707 corresponded to class FVO that High voltage diffusion resistance class HD2.
  • (11) and (12) denote the various types of shields of the insulator B1 according to the invention, which have grooves of the type described on their underside and are shown in detail in FIG. 1.
  • the shields (13) of the isolator VB1 are smooth on their underside.
  • Table 1 Identification of the types of screens used screen type Creepage distance mm D1 mm D2 mm D3 mm Weight of an umbrella g 11 191 178 291 12 125 138 161 13 100 148 154
  • the calculation of the creepage distance of the two isolators in FIG. 3 is carried out by adding the sum of the creepage distances of the shields per isolator and also adding the insulation length L.
  • the dimensions of the isolators and the ratios specified in IEC publication 815 are given in Table 2.
  • Table 2 shows that both types of isolators are those listed in IEC Publication 815 Criteria met and are largely identical electrically.
  • the four insulators were subjected to an electrical endurance test in one Subject to cloud chamber.
  • the test is detailed in IEC publication 1109 described.
  • one isolator was placed horizontally and one vertically arranged in the cloud chamber.
  • the test voltage was 14 kV.
  • a salt spray with a conductivity of 16 mS / cm was generated artificially.
  • the leakage currents occurring at the insulators were tested continuously measured over 1000 hours. This test was done by all four isolators existed in both horizontal and vertical positions because it no arcing occurred during the test, nor did it form on the Insulators signs of creep or erosion.
  • Figure 4 gives a diagram with the time course of the leakage currents Isolators during the test again.
  • the diagram shows one fundamental difference in the insulation behavior between vertical and horizontal installation position. Both isolator types showed in a vertical installation position a very similar behavior: the mean leakage currents for the Isolator B1 according to the invention 0.03 mA, for the isolator VB1 according to the prior art of technology 0.015 mA.
  • the isolator B1 according to the invention showed an average leakage current of 20 mA, while the isolator VB1 according to the prior art one about ten times higher leakage current of approx. 200 mA than the average.
  • the effect of Grooves according to the invention were shown in this test at horizontal arrangement of the isolators. This test result was surprising because of insulators with grooved screens made of other materials a poorer insulation behavior than known with insulators without grooved shields is.
  • the creepage distance of isolators is adapted to the later place of use. Large atmospheric contaminants require large creepage distances.
  • isolators for a 110 kV overhead line with a creepage distance of 3350 mm were manufactured.
  • the overall length of the insulator and thus the fixed insulation length L were specified.
  • Table 3 lists the characteristics of the isolator VB2 according to the prior art and the isolator B2 according to the invention.
  • the stroke distance corresponds to the length of a stretched over the isolator Thread, with a vertically positioned insulator from the bottom edge the upper fitting outside via the screens to the upper edge of the lower Fitting is measured.
  • Shield type 2 was correspondingly used for the isolator B2 according to the invention Table 1 selected.
  • the isolator VB2 was used as in Example 1 with the Umbrella type 3 equipped. Table 3 shows that both isolators are those in the IEC publication 815 criteria met. From an electrical point of view both insulators to be regarded as equivalent, since striking distance and also Total creepage distance are approximately the same size.
  • the manufacturing effort is significantly less than that of the isolator VB2 According to the state of the art. Only 19 instead of 24 umbrellas are required and the amount of silicone material for the shield cover of the invention Isolator B2 is 15.6% lower than the isolator VB2.
  • Shield type 1 was correspondingly used for the isolators B3 according to the invention Table 1 chosen.
  • the comparative isolators VB3 were as in Examples 1 and 2 equipped with the umbrella type 3. Both isolators met those in the Criteria referred to in IEC publication 815. Based on these criteria, the Comparative isolator VB3, however, run longer than it does for 110 kV isolators is otherwise common.
  • the isolator B3 according to the invention could, however usual length are kept. It was 17% shorter than the VB3 isolator. He required the same amount of silicone material as the comparative insulator VB3, the number of umbrellas increased from 29 to 16, i.e. by 45% be reduced. That means a clear advantage in terms of Manufacturing costs for the umbrellas.
  • the advantages of the insulators according to the invention were most effective when dealing with large atmospheric contaminants and high electrical transmission voltages. Specific creepage distances of 50 mm / kV are required for conventional insulators made of porcelain and glass in heavy pollution areas near coastal desert areas. By using composite insulators with a shielding cover according to the invention made of silicone elastomers of the type described here, the specific creepage distance could be reduced to 40 mm / kV. With a transmission voltage U max of 420 kV, an isolator creepage distance of 16800 mm was therefore necessary for composite isolators of the type described.
  • the dimensions of the isolators VB4, 84 and B5 were determined by the creep path factor CF, which had to be observed for these isolators with the maximum value 4, so that an isolating length L of 4200 mm resulted for these isolators.
  • the dimensions of the isolator VB5 were predetermined by the ratio of screen spacing to screen projection (s / p).
  • the isolator B3 was determined by I d / c.
  • Table 5 shows that isolators VB5 and B6 are longer isolators result than the others and are therefore not preferable.
  • the most economical solution for an isolator according to the state of the art was the Isolator VB4 with alternating screen diameters.
  • the Both alternatives B4 and B5 according to the invention have the advantage of one Material savings.
  • the number of screens was the alternatives B4 and B5 significantly reduced, namely by 35% and 46%.
  • Insulators for this purpose had a considerable weight. The had an effect on isolators according to the prior art that When the insulators are placed horizontally on a flat surface, the shields could be permanently deformed by its own weight. This occurred especially with alternating screen diameters like the isolator VB4, where the isolator weight from the 62 large diameter screens had to be worn.
  • the isolators B4 and B5 pointed mechanically stable shields, which do not deform when the insulators are transported suffered.

Landscapes

  • Insulators (AREA)
  • Organic Insulating Materials (AREA)
  • Insulating Bodies (AREA)
EP95944010A 1994-07-29 1995-07-07 Elektrischer isolator aus silikongummi für hochspannungsanwendungen Expired - Lifetime EP0774157B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4426927A DE4426927A1 (de) 1994-07-29 1994-07-29 Elektrischer Isolator aus Silikongummi für Hochspannungsanwendungen
DE4426927 1994-07-29
PCT/EP1995/002699 WO1996004667A1 (de) 1994-07-29 1995-07-07 Elektrischer isolator aus silikongummi für hochspannungsanwendungen

Publications (2)

Publication Number Publication Date
EP0774157A1 EP0774157A1 (de) 1997-05-21
EP0774157B1 true EP0774157B1 (de) 2004-08-04

Family

ID=6524457

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95944010A Expired - Lifetime EP0774157B1 (de) 1994-07-29 1995-07-07 Elektrischer isolator aus silikongummi für hochspannungsanwendungen

Country Status (12)

Country Link
US (1) US6051796A (ko)
EP (1) EP0774157B1 (ko)
JP (1) JP3774229B2 (ko)
KR (1) KR100375646B1 (ko)
CN (1) CN1089935C (ko)
AT (1) ATE272888T1 (ko)
BR (1) BR9508451A (ko)
DE (2) DE4426927A1 (ko)
ES (1) ES2220947T3 (ko)
MY (1) MY114100A (ko)
WO (1) WO1996004667A1 (ko)
ZA (1) ZA956305B (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017214120A1 (de) 2017-08-11 2019-02-14 Lapp Insulators Gmbh Verbundisolator sowie Verfahren zum Herstellen eines Verbundisolators

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19734362A1 (de) * 1997-08-08 1999-02-11 Haefely Trench Mwb Gmbh Verfahren und Form zur Herstellung von Schirmisolatoren
US6215940B1 (en) * 1998-06-01 2001-04-10 3M Innovative Properties Company High voltage insulator for optical fibers
DE19844409C2 (de) * 1998-09-28 2000-12-21 Hochspannungsgeraete Porz Gmbh Hochspannungs-Durchführung
DE19856123C2 (de) * 1998-12-04 2000-12-07 Siemens Ag Hohlisolator
DE10112689A1 (de) * 2000-09-22 2002-04-11 Ceramtec Ag Kriechwegverlängerung auf der Oberseite von Isolatorschirmen
JP4137480B2 (ja) * 2002-03-27 2008-08-20 日本碍子株式会社 ポリマー碍子
US7002079B2 (en) * 2003-08-14 2006-02-21 Electric Power Research Institute Indicators for early detection of potential failures due to water exposure of polymer-clad fiberglass
CN100421189C (zh) * 2003-09-11 2008-09-24 马斌 一种复合绝缘子及其生产方法
CN103035346A (zh) * 2010-05-24 2013-04-10 江苏神马电力股份有限公司 一种363kv、420kv开关用空心复合绝缘子
WO2012143620A1 (fr) * 2011-04-19 2012-10-26 Sediver Societe Europeenne D'isolateurs En Verre Et Composite Procédé de fabrication d'un isolateur composite utilisant une résine à haute performance thermique
CN102262948B (zh) * 2011-07-21 2013-08-28 河北硅谷化工有限公司 线路用复合柔性阻尼绝缘子
DE102011088248A1 (de) * 2011-12-12 2013-06-13 Wacker Chemie Ag Verfahren zur Herstellung von Verbundisolatoren
US8774587B1 (en) 2013-01-26 2014-07-08 Optisense Network, Llc Stress control structure for optical fibers in a high voltage environment
US9347973B2 (en) 2013-05-15 2016-05-24 Gridview Optical Solutions, Llc Stress control assembly and methods of making the same
CN103545027A (zh) * 2013-10-22 2014-01-29 国家电网公司 一种高频高压绝缘端子及制作方法
CN105765670B (zh) 2013-11-05 2018-09-28 Abb瑞士股份有限公司 具有模制伞裙的避雷器和用于模制的装置
CN103971861A (zh) * 2014-05-21 2014-08-06 北京铁道工程机电技术研究所有限公司 一种具有防界面击穿的动车车顶复合绝缘子
CN103971862B (zh) * 2014-05-21 2017-08-01 北京铁道工程机电技术研究所有限公司 一种动车车顶抗污闪复合绝缘子
US10923957B2 (en) 2015-11-18 2021-02-16 The University Of Hong Kong Wireless power transfer system
EP3378076B1 (en) * 2015-11-18 2020-12-23 The University of Hong Kong A wireless power transfer system
DE102017217163B4 (de) * 2017-09-27 2023-05-04 Siemens Energy Global GmbH & Co. KG Elektrisches Betriebsmittel und Herstellungsverfahren für ein elektrisches Betriebsmittel
CA3036680A1 (en) * 2018-03-23 2019-09-23 General Electric Technology Gmbh Power supply device and an associated method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4399064A (en) * 1969-10-17 1983-08-16 Raychem Corporation Anti-tracking high voltage insulating materials

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1180017B (de) * 1962-10-08 1964-10-22 Licentia Gmbh Isolatorteller aus Kunststoff fuer Haengeisolatoren
DE1465922A1 (de) * 1964-07-13 1969-05-14 Licentia Gmbh Kunststoffisolator fuer Hochspannungsuebertragungsleitungen unter Verwendung von Glasfasern und Verfahren zu seiner Herstellung
JPS53135493A (en) * 1977-04-28 1978-11-27 Ngk Insulators Ltd Cylindrical insulator
DE2746870C2 (de) * 1977-10-19 1982-08-26 Rosenthal Technik Ag, 8672 Selb Verfahren zur Herstellung von Freiluft-Verbundisolatoren
DE2824587A1 (de) * 1978-06-05 1979-12-06 Bbc Brown Boveri & Cie Verbundisolator
JPS5673821A (en) * 1979-11-17 1981-06-18 Ngk Insulators Ltd Synthetic resin insulator
DE3003095A1 (de) * 1980-01-29 1981-07-30 Siemens AG, 1000 Berlin und 8000 München Verfahren zur herstellung von elektrischen kunststoffverbundisolatoren
JPS5787016A (en) * 1980-11-20 1982-05-31 Ngk Insulators Ltd Synthetic resin insulator
FI851496L (fi) * 1985-04-15 1986-10-16 Karolon Oy Blanktraodsisolator och foerfarande foer dess framstaellning.
DE3831479A1 (de) * 1988-09-16 1990-03-29 Wacker Chemie Gmbh Zum beschichten der oberflaeche von elektrischen hochspannungsisolatoren geeignete massen
US5147984A (en) * 1990-12-04 1992-09-15 Raychem Corporation Cap and pin insulator
US5830405A (en) * 1993-09-03 1998-11-03 Raychem Corporation Molding methods, track resistant silicone elastomer compositions and improved molded parts with better arcing, flashover and pollution resistance

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4399064A (en) * 1969-10-17 1983-08-16 Raychem Corporation Anti-tracking high voltage insulating materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017214120A1 (de) 2017-08-11 2019-02-14 Lapp Insulators Gmbh Verbundisolator sowie Verfahren zum Herstellen eines Verbundisolators

Also Published As

Publication number Publication date
ES2220947T3 (es) 2004-12-16
CN1089935C (zh) 2002-08-28
MY114100A (en) 2002-08-30
KR100375646B1 (ko) 2003-06-12
WO1996004667A1 (de) 1996-02-15
ATE272888T1 (de) 2004-08-15
ZA956305B (en) 1996-03-14
US6051796A (en) 2000-04-18
JPH10505456A (ja) 1998-05-26
BR9508451A (pt) 1997-12-23
CN1154758A (zh) 1997-07-16
KR970705150A (ko) 1997-09-06
JP3774229B2 (ja) 2006-05-10
DE4426927A1 (de) 1996-02-01
EP0774157A1 (de) 1997-05-21
DE59510933D1 (de) 2004-09-09

Similar Documents

Publication Publication Date Title
EP0774157B1 (de) Elektrischer isolator aus silikongummi für hochspannungsanwendungen
DE2650363C2 (de) Verbundisolator für Hochspannungsfreiluft-Anwendungen
DE19842654B4 (de) Verbesserter Verbundisolator
DE3145896C2 (de) Kunststoffisolator
DE2746870A1 (de) Verfahren zur herstellung von freiluft-verbundisolatoren
DE2436413A1 (de) Hochspannungskabel
EP2243145A1 (de) Feldgesteuerter verbundisolator
EP0068067B1 (de) Hochspannungswiderstand für Freiluft-Isolieranordnungen
DE2933820C2 (de) Vakuumschalter
DE19835916A1 (de) Isolator
DE3017368A1 (de) Zeilentransformator fuer einen fernsehempfaenger
EP0739071B1 (de) Hochspannungs-Rohrgasleiter
EP1126555A2 (de) Kontaktelement
DE102008005678B4 (de) Überspannungsableiter
DE3214141C2 (ko)
EP0121133A2 (de) Verfahren zur Herstellung eines elektrischen Kunststoffisolators und nach dem Verfahren hergestellter Verbundisolator
CH690256A5 (de) Isolator für Hochspannungsanlagen.
EP0491091A1 (de) Kunststoffisoliertes Hochspannungskabel mit einem aufgeschobenen Steuerelement
DE102017217163B4 (de) Elektrisches Betriebsmittel und Herstellungsverfahren für ein elektrisches Betriebsmittel
DE2845868A1 (de) Aufschieb-kabelendverschluss
DE102022205236A1 (de) Isolierstützer
DE2530435C3 (de) Hängeisolator
EP0059845A2 (de) Isolierstab für einen Streckentrenner oder Phasentrenner
DE102016205504A1 (de) Hohlisolator und Hochspannungsschalter mit einem Hohlisolator
DE1465922A1 (de) Kunststoffisolator fuer Hochspannungsuebertragungsleitungen unter Verwendung von Glasfasern und Verfahren zu seiner Herstellung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19970228

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE ES FR GB IT LI SE

17Q First examination report despatched

Effective date: 19980105

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: LAPP INSULATOR GMBH & CO. KG

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE ES FR GB IT LI SE

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ISLER & PEDRAZZINI AG

REF Corresponds to:

Ref document number: 59510933

Country of ref document: DE

Date of ref document: 20040909

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20041104

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2220947

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20050506

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCAR

Free format text: ISLER & PEDRAZZINI AG;POSTFACH 1772;8027 ZUERICH (CH)

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: LAPP INSULATORS GMBH

Free format text: LAPP INSULATOR GMBH & CO. KG#BAHNHOFSTRASSE 5#95632 WUNSIEDEL (DE) -TRANSFER TO- LAPP INSULATORS GMBH#BAHNHOFSTRASSE 5#95632 WUNSIEDEL (DE)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20140728

Year of fee payment: 20

Ref country code: CH

Payment date: 20140722

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20140722

Year of fee payment: 20

Ref country code: GB

Payment date: 20140721

Year of fee payment: 20

Ref country code: FR

Payment date: 20140724

Year of fee payment: 20

Ref country code: ES

Payment date: 20140721

Year of fee payment: 20

Ref country code: AT

Payment date: 20140620

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20140725

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59510933

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20150706

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK07

Ref document number: 272888

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150707

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20151026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20150706

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20150708