EP0774157B1 - Elektrischer isolator aus silikongummi für hochspannungsanwendungen - Google Patents
Elektrischer isolator aus silikongummi für hochspannungsanwendungen Download PDFInfo
- 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
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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.
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- Insulators (AREA)
- Insulating Bodies (AREA)
- Organic Insulating Materials (AREA)
Description
- Silikongummis sind wasserabweisend. Auf Silikongummi-Oberflächen perlt das Wasser ab.
- Silikongummis senden aus ihrem Inneren niedermolekulare Siloxane an ihre Oberfläche, die ebenfalls wasserabweisend sind. Befindet sich Schmutz auf einer Silikongummi-Oberfläche, dann bewegen sich die niedermolekularen Siloxane auf die einzelnen Schmutzpartikel zu und umhüllen diese, so daß die Schmutzpartikel ebenfalls wasserabweisend werden.
Aufgabe ist es außerdem, einen Hochspannungsisolator zu schaffen, der bei der gleichen Baulänge einen in etwa gleich langen Kriechweg aufweist, der gleichzeitig die physikalischen Abmessungen gemäß Publikation IEC 815 erfüllt, der mit stark verringerten Kosten hergestellt werden kann und der exzellente Isolationseigenschaften beim Einsatz in stark verschmutzter Atmosphäre aufweist.
Ferner ist es Aufgabe, einen Hochspannungsisolator zu schaffen, der bei einer verringerten Baulänge einen gleich langen Kriechweg aufweist, der gleichzeitig die physikalischen Abmessungen gemäß Publikation IEC 815 erfüllt, der mit weiter verringerten Kosten hergestellt werden kann und der exzellente Isolationseigenschaften beim Einsatz in stark verschmutzter Atmosphäre aufweist.
Flachschirmkonstruktionen von Isolatoren aus Silikongummi sind deshalb darauf ausgerichtet, den Materialeinsatz zu minimieren, was zu dünnen Schirmen führt. Dünne Schirme aus Silikongummi, insbesondere solche größeren Durchmessers sind daher mechanisch instabil, sie neigen zur Deformation während Lagerung und Transport und können auch mechanisch leicht beschädigt werden. Durch die Verwendung von Rillen an den Schirmunterseiten können die Schirme bei gleichem oder noch größerem Kriechweg kleiner im Durchmesser gehalten werden als flache Schirme und gewinnen dabei durch die versteifende Wirkung der Rillen an den Schirmunterseiten, einen erheblichen Grad an mechanischer Stabilität. Der Materialeinsatz für die Rillen ist gering und wird bei weitem durchdie dadurch gewonnene Kriechweglänge kompensiert, da eine Verlängerung des Kriechweges bei Flachschirmen nur über die Durchmesservergrößerung erreicht werden kann, die in die Materialrechnung quadratisch eingeht.
- c ≥
- 30 mm,
- s/p ≥
- 0,8 für Schirme mit Rillen in der Schirmunterseite,
- s/p ≥
- 0,65 für Schirme mit glatter Schirmunterseite,
- ld ≤
- 5.
Kennzeichen der verwendeten Schirmtypen | |||||
SchirmTyp | Kriechweg mm | D1 mm | D2 mm | D3 mm | Gewicht eines Schirmes g |
11 | 191 | 178 | 291 | ||
12 | 125 | 138 | 161 | ||
13 | 100 | 148 | 154 |
Kennzeichen der Isolatoren VB1 und B1 | ||||||||||||
Isolator | Kriechweg mm | Schlagweite mm | L mm | d mm | Silikonwerstoffgewicht g | c mm | s mm | p mm | Id/c | s/p | CF | PF |
VB1 | 485 | 210 | 185 | 30 | 533 | 43 | 46 | 59 | 2,7 | 0,78 | 2,3 | 1,4 |
81 | 485 | 210 | 175 | 30 | 519 | 49 | 59 | 74 | 4,2 | 0,8 | 2,3 | 1,0 |
- d =
- 30 mm bedeuten:
- VB4
- Isolator nach dem Stand der Technik mit alternierenden Schirmdurchmessern von abwechselnd 168 und 134 mm,
- VB5
- Isolator nach dem Stand der Technik mit einheitlichen Schirmdurchmessern von 148 mm,
- B4
- erfindungsgemäßer Isolator mit alternierenden Schirmdurchmessern (siehe auch Fig. 1) von 178 und 138 mm,
- B5
- erfindungsgemäßer Isolator mit einheitlichen Schirmdurchmessern von 178 mm,
- B6
- erfindungsgemäßer Isolator mit einheitlichen Schirmdurchmessern von 138 mm.
Claims (12)
- Elektrischer Hochspannungsisolator aus Kunststoff umfassend wenigstens einen Glasfaserstab (1), wenigstens eine den Glasfaserstab umgebende Schirmhülle (2) aus Silikongummi, die in Richtung der Längsachse des isolators angeordnete, konzentrische, schirmförmig so gebogene Auswölbungen (3) aufweist, daß sie eine konvexe Ober- und eine konkave oder flache Unterseite bilden, sowie Metallarmaturen (5) an beiden Isolatorenden, dadurch gekennzeichnet, daß die Schirmhülle einschließlich der Auswölbungen aus einem HTV-Silikongummi besteht, der im wesentlichen aus Polyvinyldimethylsiloxanen und Füllstoffen besteht und mit Hilfe von Peroxiden vernetzt ist
oder daß sie aus einem anderen Silikongummi auf Basis von Polyorganodimethylsiloxanen besteht,
daß die Shore A Härte der Schirmhülle einschließlich der Auswölbungen mehr als 40 beträgt und
daß die schirmförmig gebogenen Auswölbungen jeweils unterseitig wenigstens eine Rille (4) aufweisen. - Elektrischer Hochspannungsisolator nach Anspruch 1, dadurch gekennzeichnet, daß mehrere Rillen (4) im Bereich der Unterseite der schirmförmig gebogenen Auswölbungen (3) angeordnet sind.
- Elektrischer Hochspannungsisolator nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Rille(n) eine Mindesttiefe, gemessen als Abstand von der Spitze zum Tal, von wenigstens 1 mm besitzen.
- . Elektrischer Hochspannungsisolator nach Anspruch 3, dadurch gekennzeichnet, daß die Rille(n) eine Tiefe im Bereich von 5 bis 50 mm besitzen.
- Elektrischer Hochspannungsisolator nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Breite der Rille(n), gemessen als Abstand zwischen zwei benachbarten Spitzen, im Bereich von 3 bis 200 mm liegt,
- Elektrischer Hochspannungsisolator nach Anspruch 5, dadurch gekennzeichnet, daß die Breite der Rille(n) im Bereich von 5 bis 80 mm liegt.
- Elektrischer Hochspannungsisolator nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Rille(n) und ihre Ränder verrundet ausgebildet sind.
- Elektrischer Hochspannungsisolator nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Material für die Schirmhülle (2), insbesondere für die schirmförmig gebogenen Auswölbungen (3), Silikongummi ist, dessen Shore A Härte mindestens 60 beträgt.
- Elektrischer Hochspannungsisolator nach Anspruch 8, dadurch gekennzeichnet, daß die Schirmhülle anorganische Füllstoffe, insbesondere pyrogene Kieselsäure, enthält.
- . Elektrischer Hochspannungsisolator nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Schirmhülle Aluminiumoxidhydrat oder einen Platin-Guanidin-Komplex enthält.
- Elektrischer Hochspannungsisolator nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß er einen Hochspannungs-Lichtbogenfestigkeitstest über eine Einbrenndauer von mehr als 240 s nach DIN VDE 0441 Teil 1 erfolgreich ausgesetzt werden kann.
- Elektrischer Hochspannungsisolator nach Anspruch 11,
dadurch gekennzeichnet, daß er einem Hochspannungs-Kriechstromfestigkeitstest mit einer Prüfspannung von mindestens 3,5 kV über eine Zeitdauer von 6 Stunden nach DIN VDE 0441 Teil 1 erfolgreich ausgesetzt werden kann.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4426927 | 1994-07-29 | ||
DE4426927A DE4426927A1 (de) | 1994-07-29 | 1994-07-29 | Elektrischer Isolator aus Silikongummi für Hochspannungsanwendungen |
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 (de) |
EP (1) | EP0774157B1 (de) |
JP (1) | JP3774229B2 (de) |
KR (1) | KR100375646B1 (de) |
CN (1) | CN1089935C (de) |
AT (1) | ATE272888T1 (de) |
BR (1) | BR9508451A (de) |
DE (2) | DE4426927A1 (de) |
ES (1) | ES2220947T3 (de) |
MY (1) | MY114100A (de) |
WO (1) | WO1996004667A1 (de) |
ZA (1) | ZA956305B (de) |
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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 |
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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 |
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DE102011088248A1 (de) | 2011-12-12 | 2013-06-13 | Wacker Chemie Ag | Verfahren zur Herstellung von Verbundisolatoren |
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EP3066671B1 (de) | 2013-11-05 | 2017-09-20 | ABB Schweiz AG | Überspannungsableiter mit geformten fächern und vorrichtung zum formen |
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US10923957B2 (en) | 2015-11-18 | 2021-02-16 | The University Of Hong Kong | 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 |
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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 |
-
1994
- 1994-07-29 DE DE4426927A patent/DE4426927A1/de not_active Ceased
-
1995
- 1995-07-07 CN CN95194403A patent/CN1089935C/zh not_active Expired - Lifetime
- 1995-07-07 AT AT95944010T patent/ATE272888T1/de active
- 1995-07-07 DE DE59510933T patent/DE59510933D1/de not_active Expired - Lifetime
- 1995-07-07 JP JP50611896A patent/JP3774229B2/ja not_active Expired - Lifetime
- 1995-07-07 WO PCT/EP1995/002699 patent/WO1996004667A1/de active IP Right Grant
- 1995-07-07 BR BR9508451A patent/BR9508451A/pt not_active IP Right Cessation
- 1995-07-07 ES ES95944010T patent/ES2220947T3/es not_active Expired - Lifetime
- 1995-07-07 KR KR1019970700574A patent/KR100375646B1/ko not_active IP Right Cessation
- 1995-07-07 EP EP95944010A patent/EP0774157B1/de not_active Expired - Lifetime
- 1995-07-07 US US08/776,517 patent/US6051796A/en not_active Expired - Lifetime
- 1995-07-26 MY MYPI95002141A patent/MY114100A/en unknown
- 1995-07-28 ZA ZA956305A patent/ZA956305B/xx unknown
Patent Citations (1)
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---|---|---|---|---|
US4399064A (en) * | 1969-10-17 | 1983-08-16 | Raychem Corporation | Anti-tracking high voltage insulating materials |
Cited By (1)
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 |
---|---|
CN1089935C (zh) | 2002-08-28 |
KR100375646B1 (ko) | 2003-06-12 |
CN1154758A (zh) | 1997-07-16 |
DE59510933D1 (de) | 2004-09-09 |
ZA956305B (en) | 1996-03-14 |
KR970705150A (ko) | 1997-09-06 |
JPH10505456A (ja) | 1998-05-26 |
US6051796A (en) | 2000-04-18 |
ATE272888T1 (de) | 2004-08-15 |
ES2220947T3 (es) | 2004-12-16 |
JP3774229B2 (ja) | 2006-05-10 |
DE4426927A1 (de) | 1996-02-01 |
EP0774157A1 (de) | 1997-05-21 |
BR9508451A (pt) | 1997-12-23 |
MY114100A (en) | 2002-08-30 |
WO1996004667A1 (de) | 1996-02-15 |
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