DE2026981A1 - Polyolefin-insulated electric cable - of long life - with insulated semiconducting layers - Google Patents

Polyolefin-insulated electric cable - of long life - with insulated semiconducting layers

Info

Publication number
DE2026981A1
DE2026981A1 DE19702026981 DE2026981A DE2026981A1 DE 2026981 A1 DE2026981 A1 DE 2026981A1 DE 19702026981 DE19702026981 DE 19702026981 DE 2026981 A DE2026981 A DE 2026981A DE 2026981 A1 DE2026981 A1 DE 2026981A1
Authority
DE
Germany
Prior art keywords
insulated
insulation
semiconducting layers
electric cable
polyolefin
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.)
Pending
Application number
DE19702026981
Other languages
German (de)
Inventor
Jan Dr.-Ing. 4100 Duisburg. M Artbauer
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.)
Vereinigte Draht und Kabelwerke AG
Original Assignee
Vereinigte Draht und Kabelwerke 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 Vereinigte Draht und Kabelwerke AG filed Critical Vereinigte Draht und Kabelwerke AG
Priority to DE19702026981 priority Critical patent/DE2026981A1/en
Publication of DE2026981A1 publication Critical patent/DE2026981A1/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/027—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of semi-conducting layers

Landscapes

  • Organic Insulating Materials (AREA)

Abstract

The electric cable has the insulation between semiconducting layers. The insulation contains additives which increase its tensile strength and which are also present in the same or a higher concentration in the semiconducting layers.

Description

E 1 e k t r i s c h e s K a b e 1 Die Erfindung betrifft ein elektrisches Kabel mit einer Isolierung aus Olefinpolymerisaten, die zwischen halbleitenden Schichten angeordnet ist. Die Isolierung enthält Zusätze zur Erhöhung der Spannungsfestigkeit.The invention relates to an electrical device Cable with insulation made of olefin polymers between semiconducting layers is arranged. The insulation contains additives to increase the dielectric strength.

Zur Erhöhung der Spannungsfestigkeit der aus Olefinpolymerisaten bestehenden Isolierung von elektrischen Kabeln wurde vorgeschlagen, der Isoliermasse gewisse Verbindungen, sogenannte Spannungsstabilisatoren zuzusetzen. Dadurch wird auch insbesondere eine größere Dauerfestigkeit der Isolierung erreicht. Die als Zusätze vorgeschlagenen Verbindungen besitzen Jedoch den schwerwiegenden Nachteil, daß sie im Laufe der Zeit aus der Isolierung auswandern. Hierdurch geht der gewasischte Effekt der Erhöhung der Spannungsfestìgkeit völlig oder teilweise verloren.To increase the dielectric strength of those made of olefin polymers Insulation of electrical cables has been suggested, the insulating mass certain Add connections, so-called voltage stabilizers. This will also in particular A greater fatigue strength of the insulation is achieved. The ones suggested as additives However, compounds have the serious disadvantage that they become in the course of Time to emigrate from isolation. This has the washed-out effect of the increase the tension resistance is completely or partially lost.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Isolierung für Hochspannungskabel anzugeben, welche Spannungsstabilisatoren enthält und bei welcher diese Spannungsstabilisatoren aus der Isolierung nicht auswandern können, bzw. bei welcher die Auswanderung dieser Zusätze auf ein unbedeutendes Ausmaß reduziert ist. Gelöst wird diese Aufgabe gemäß der Erfindung dadurch, daß die gleichen Zusätze in derselben oder eier größeren Konzentration wie in der Isolierung auch in den an die Isolierung angrenzenden halbleitenden Schichten enthalten sind. Bei dem erfindungsgemäßen elektrischen Kabel sind als Hauptbestandteil der Isolierung und der halbleitenden Schichten Polyolefine vorgesehen.The present invention has for its object to be a insulation for high-voltage cables to indicate which voltage stabilizers contain and at which these voltage stabilizers cannot migrate out of the insulation, or in which the emigration of these additives is reduced to an insignificant extent is. This object is achieved according to the invention in that the same additives in the same concentration or in a greater concentration as in the isolation also in the semiconducting layers adjacent to the insulation are included. In the inventive electrical cables are considered the main component of insulation and semiconducting Layers of polyolefins are provided.

Das erfindungsgemäße Kabel weist den Vorteil auf, daß die spannungsstabilisierenden Zusätze, welche sich in der Isolierung befinden, in dieser verbleiben. Eine Auswanderung von Zusätzen in der Isolierung geschieht nämlich aufgrund eines Konzentrationsgefälles zwischen der Isolierung und den angrenzenden Schichten. Enthält die zur Leiterglättung verwendete halbleitende Schicht gemäß der Erfindung jedoch ebenfalls die spannungsstabilisierenden Zusätze, wird ein Konzentrationsgefälle zwischen der Isolierung und dieser Schicht vermieden. Auf diese Weise wird der Abnahme ihrer Konzentration in der Isolierung entgegengewirkt, so daß der Effekt der Erhöhung der Spannungsfestigkeit durch diese Spannungsstabilisatoren über lange Zeit erhalten bleibt.The cable according to the invention has the advantage that the voltage-stabilizing Additives that are in the insulation remain in it. An emigration of additives in the insulation happens because of a concentration gradient between the insulation and the adjacent layers. Contains those for ladder smoothing However, the semiconducting layer used according to the invention is also the voltage-stabilizing layer Additives, there will be a concentration gradient between the insulation and this layer avoided. This will decrease their concentration in the isolation counteracted so that the effect of increasing the dielectric strength through this Voltage stabilizers are retained over a long period of time.

2 S. Beschreibung 2 Patentansprüche2 S. Description of 2 claims

Claims (2)

P a t e n t a n s p r ü c h e 1 1 Elektrisches Kabel mit einer zwischen halbleitenden Schichten angeordneten polymeren Isolierung, welche Zusätze zur Erhöhung der Spannungsfestigkeit enthält, dadurch gekennzeichnet, daß die gleichen Zusätze in derselben oder einer größeren Konzentration wie in der Isoliert auch in den an die Isolierung angrenzenden halbleitenden Schichten enthalten sind. P a t e n t a n s p r ü c h e 1 1 Electrical cable with a between semiconducting layers arranged polymeric insulation, which additives to increase contains the dielectric strength, characterized in that the same additives in the same or a greater concentration as in the isolated also in the an the insulation adjoining semiconducting layers are included. 2. Elektrisches gabel nach Anspruch 1, dadurch gekennzeichnet, daß als Hauptbestandteil der Isolierung und der halbleitenden Schichten Polyolefine vorgesehen sind. 2. Electric fork according to claim 1, characterized in that as the main component of the insulation and of the semiconducting layers, polyolefins are provided.
DE19702026981 1970-05-27 1970-05-27 Polyolefin-insulated electric cable - of long life - with insulated semiconducting layers Pending DE2026981A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19702026981 DE2026981A1 (en) 1970-05-27 1970-05-27 Polyolefin-insulated electric cable - of long life - with insulated semiconducting layers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702026981 DE2026981A1 (en) 1970-05-27 1970-05-27 Polyolefin-insulated electric cable - of long life - with insulated semiconducting layers

Publications (1)

Publication Number Publication Date
DE2026981A1 true DE2026981A1 (en) 1971-12-02

Family

ID=5772801

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19702026981 Pending DE2026981A1 (en) 1970-05-27 1970-05-27 Polyolefin-insulated electric cable - of long life - with insulated semiconducting layers

Country Status (1)

Country Link
DE (1) DE2026981A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3347196A1 (en) * 1983-12-27 1985-07-04 Siemens AG, 1000 Berlin und 8000 München Electrical insulation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3347196A1 (en) * 1983-12-27 1985-07-04 Siemens AG, 1000 Berlin und 8000 München Electrical insulation

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