DE19920639A1 - Electrically insulating component for high voltage equipment, e.g. an insulating support in high voltage switch-gear or tubular gas-filled conductor, has an insulating coating of PTFE - Google Patents
Electrically insulating component for high voltage equipment, e.g. an insulating support in high voltage switch-gear or tubular gas-filled conductor, has an insulating coating of PTFEInfo
- Publication number
- DE19920639A1 DE19920639A1 DE1999120639 DE19920639A DE19920639A1 DE 19920639 A1 DE19920639 A1 DE 19920639A1 DE 1999120639 DE1999120639 DE 1999120639 DE 19920639 A DE19920639 A DE 19920639A DE 19920639 A1 DE19920639 A1 DE 19920639A1
- Authority
- DE
- Germany
- Prior art keywords
- high voltage
- insulating
- ptfe
- component
- gear
- 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- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
- H01B3/445—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds from vinylfluorides or other fluoroethylenic compounds
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
- H02G5/066—Devices for maintaining distance between conductor and enclosure
Abstract
Description
Die Erfindung bezieht sich auf ein elektrisch isolierendes im wesentlichen aus einem ersten Isoliermaterial bestehendes Bauteil für eine Hochspannungsanlage, welches an seiner Ober fläche mit einem zweiten Isoliermaterial beschichtet ist.The invention relates to an electrically insulating consisting essentially of a first insulating material Component for a high-voltage system, which on its upper surface is coated with a second insulating material.
Solche Bauteile finden beispielsweise als Isolierstützer in Hochspannungsschaltanlagen oder in Rohrgasleitern oder als Stützer in Freiluftschaltgeräten Verwendung.Such components can be found, for example, as insulation supports in High-voltage switchgear or in tubular gas ladders or as Supports used in outdoor switchgear.
Beim Einsatz derartiger Bauteile in Hochspannungsanlagen tritt häufig das Problem auf, daß Hochspannungsüberschläge das Isoliermaterial in Mitleidenschaft ziehen, insbesondere daß bei Gießharzen das sog. Tracking auftritt, d. h., daß an der Oberfläche des isolierenden Bauteils die Kohlenstoffver bindungen zerstört werden und eine leitfähige Kohlenstoffspur auf der Oberfläche des Bauteils entsteht.When using such components in high-voltage systems Often the problem arises that high voltage arcing affect the insulation material, in particular that so-called tracking occurs in casting resins, d. that is the surface of the insulating component, the carbon ver bonds are destroyed and a conductive carbon trace arises on the surface of the component.
Hierdurch wird die Hochspannungsfestigkeit und die dielektri sche Sicherheit der Hochspannungsanlage vermindert.As a result, the high voltage strength and the dielectri cal security of the high-voltage system is reduced.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, ein elektrisch isolierendes Bauteil der eingangs genannten Art zu schaffen, durch das die dielektrische Sicherheit der Anlage verbessert wird.The present invention is therefore based on the object an electrically insulating component of the aforementioned To create the way that the dielectric safety of the Plant is improved.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß das zweite Isoliermaterial Polytetrafluräthylen ist.The object is achieved in that the second insulating material is polytetraflurethylene.
Polytetrafluräthylen zeigt ein sehr gutes Trackingverhalten, das bedeutet, daß unter dem Einfluß von Lichtbögen lediglich PTFE an der Oberfläche verdampft, jedoch keine Kohlen stoffspuren an der Oberfläche des Bauteils hinterlassen wer den. Das Verdampfen von PTFE unter dem Einfluß eines Funkens oder Lichtbogens führt außerdem vorteilhaft dazu, daß durch die elektronegativen entstehenden Gase der Funke bzw. Licht bogen gekühlt wird.Polytetraflurethylene shows very good tracking behavior, that means that under the influence of arcs only PTFE evaporates on the surface, but no carbon traces of fabric on the surface of the component the. The evaporation of PTFE under the influence of a spark or arc also advantageously leads to the fact that the electronegative gases of the spark or light bow is cooled.
Die Schichtdicke der Beschichtung kann vorteilhaft kleiner als 0,5 mm sein, da eine derartig dünne Beschichtung kosten günstig herzustellen ist, das Volumen des isolierenden Bau teils nur unwesentlich vergrößert und dabei die mechanische Stabilität des Bauteils erhält.The layer thickness of the coating can advantageously be smaller than 0.5 mm, because such a thin coating costs is inexpensive to manufacture, the volume of the insulating construction sometimes only slightly enlarged and the mechanical Stability of the component is maintained.
Die Beschichtung von Bauteilen mit PTFE ist bereits verbrei tet und kostengünstig möglich.The coating of components with PTFE is already common tet and possible inexpensively.
Besonders vorteilhaft ist die Erfindung bei isolierenden Bau teilen einzusetzen, die aus Epoxidharz bestehen, da Epoxid harz besonders anfällig für Tracking ist.The invention is particularly advantageous in the case of insulating construction parts that are made of epoxy resin, because epoxy resin is particularly susceptible to tracking.
Jedoch kann die Erfindung auch vorteilhaft bei cycloaliphati schen Gießharzen eingesetzt werden, die an sich schon ein verbessertes Tracking-Verhalten aufweisen.However, the invention can also be advantageous with cycloaliphati Casting resins are used, which in itself have improved tracking behavior.
Im folgenden wird die Erfindung anhand eines Ausführungsbei spiels in einer Zeichnung gezeigt und anschließend beschrie ben.In the following, the invention is illustrated by means of an embodiment shown in a drawing and then described ben.
Dabei zeigt die Figur schematisch im Querschnitt einen Rohr gasleiter mit einem scheibenförmigen Isolierstützer.The figure shows schematically in cross section a tube gas pipe with a disc-shaped insulation support.
In einer auf Erdpotential liegenden Metallkapselung 1 eines Rohrgasleiters ist ein Hochspannungsleiter 2 mittels eines elektrisch isolierenden Bauteils 3 in Form eines scheibenför migen Isolierstützers zentriert gehalten. Der Isolierstützer kann das Kapselungsgehäuse 1 gasdicht abschließen, es kann jedoch auch ein Gasaustausch zwischen den verschiedenen Sei ten des Isolierstützers 3 vorgesehen sein. In a metal encapsulation 1 of a tubular gas conductor lying at earth potential, a high-voltage conductor 2 is held centered by means of an electrically insulating component 3 in the form of a washer-shaped insulating support. The insulation support can seal the encapsulation housing 1 gas-tight, but it can also be a gas exchange between the different Be th of the insulation support 3 is provided.
Der Isolierstützer besteht aus einem ersten Isoliermaterial 4, das den Kern des Bauteils ausmacht und daß aus einem cycloaliphatischen Gießharz oder Epoxidharz besteht. Die Oberfläche dieses Kerns 4 ist mit einer etwa 0,1 mm dicken PTFE-Schicht 5 bedeckt.The insulating support consists of a first insulating material 4 , which forms the core of the component and that consists of a cycloaliphatic casting resin or epoxy resin. The surface of this core 4 is covered with an approximately 0.1 mm thick PTFE layer 5 .
Ergibt sich eine Teilentladung zwischen dem Hochspannungslei ter 2 und der Metallkapselung 1 des Rohrgasleiters im Bereich des Isolierstützers 3, so zieht diese Teilentladung nur die Beschichtung 5 in Mitleidenschaft, ohne auf der Oberfläche des Kerns 4 Tracking-Spuren zu hinterlassen. Die Anfälligkeit für weitere Teilentladungen ist somit wegen der Stabilität des PTFE nicht vermindert.If there is a partial discharge between the Hochspannungslei ter 2 and the metal encapsulation 1 of the tubular gas conductor in the area of the insulation support 3 , this partial discharge only affects the coating 5 without leaving 4 tracking traces on the surface of the core. The susceptibility to further partial discharges is therefore not reduced due to the stability of the PTFE.
Die Erfindung kann auch bei Säulenstützern oder sonstigen ein Potential in einer Hochspannungsanlage überbrückenden Bautei len vorteilhaft eingesetzt werden.The invention can also be used in column supports or other Potential in a high-voltage system bridging building component len can be used advantageously.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1999120639 DE19920639A1 (en) | 1999-04-29 | 1999-04-29 | Electrically insulating component for high voltage equipment, e.g. an insulating support in high voltage switch-gear or tubular gas-filled conductor, has an insulating coating of PTFE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1999120639 DE19920639A1 (en) | 1999-04-29 | 1999-04-29 | Electrically insulating component for high voltage equipment, e.g. an insulating support in high voltage switch-gear or tubular gas-filled conductor, has an insulating coating of PTFE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19920639A1 true DE19920639A1 (en) | 2000-11-02 |
Family
ID=7907039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1999120639 Withdrawn DE19920639A1 (en) | 1999-04-29 | 1999-04-29 | Electrically insulating component for high voltage equipment, e.g. an insulating support in high voltage switch-gear or tubular gas-filled conductor, has an insulating coating of PTFE |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE19920639A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989006042A1 (en) * | 1987-12-19 | 1989-06-29 | Isovolta Österreichische Isolierstoffwerke Aktieng | Electrically insulating component and process for manufacturing it |
| DE19734309C1 (en) * | 1997-08-08 | 1999-02-04 | Bergner Richard Gmbh Co | Device for the mechanical connection and electrical insulation of two contact wire sections of an overhead line |
-
1999
- 1999-04-29 DE DE1999120639 patent/DE19920639A1/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989006042A1 (en) * | 1987-12-19 | 1989-06-29 | Isovolta Österreichische Isolierstoffwerke Aktieng | Electrically insulating component and process for manufacturing it |
| DE19734309C1 (en) * | 1997-08-08 | 1999-02-04 | Bergner Richard Gmbh Co | Device for the mechanical connection and electrical insulation of two contact wire sections of an overhead line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
| 8139 | Disposal/non-payment of the annual fee |