DE3902029A1 - Filling composition for electrical cables - Google Patents

Filling composition for electrical cables

Info

Publication number
DE3902029A1
DE3902029A1 DE3902029A DE3902029A DE3902029A1 DE 3902029 A1 DE3902029 A1 DE 3902029A1 DE 3902029 A DE3902029 A DE 3902029A DE 3902029 A DE3902029 A DE 3902029A DE 3902029 A1 DE3902029 A1 DE 3902029A1
Authority
DE
Germany
Prior art keywords
filling compound
filling
molecular weight
electrical cables
mass
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Withdrawn
Application number
DE3902029A
Other languages
German (de)
Inventor
Anton Dipl Ing Ludl
Ulrich Dipl Ing Behre
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.)
Kabelmetal Electro GmbH
Original Assignee
Standard Elektrik Lorenz 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 Standard Elektrik Lorenz AG filed Critical Standard Elektrik Lorenz AG
Priority to DE3902029A priority Critical patent/DE3902029A1/en
Publication of DE3902029A1 publication Critical patent/DE3902029A1/en
Withdrawn legal-status Critical Current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
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • 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
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

Abstract

The invention relates to a filling composition for electrical cables which comprises ferrite powder having a particle size of from 4 to 40 mu m and a gelatinous composition. The gelatinous composition comprises a paraffin of low molecular weight and a polymer of high molecular weight. <IMAGE>

Description

Die Erfindung bezieht sich auf Füllmassen für elektrische Kabel und gefüllte elektrische Kabel.The invention relates to filling compounds for electrical cables and filled electrical cables.

Es sind elektrische Kabel bekannt, bei denen die Zwischenräume zwischen den Adern mit einer Füllmasse gefüllt sind, um die Kabel längswasserdicht zu machen. Geeignete Füllmassen bestehen aus weichen oder weichplastischen, petrolatartigen Massen, beispielsweise NAPTEL der Firma BP-Chemie oder FLEXGEL der Firma Witco.Electric cables are known in which the Gaps between the veins with a filling compound are filled to make the cables longitudinally watertight. Suitable fillers consist of soft or soft plastic, petrolate-like masses, for example NAPTEL from BP-Chemie or FLEXGEL from Witco.

Aus der US-A-45 06 235 ist ein elektrisches Kabel bekannt, dessen isolierte Leiter in ein absorbierendes Material eingebettet sind, das zu 85 bis 94 Gewichtsprozent aus Ferritteilchen besteht. Dieses Material dient zur Abschirmung des Kabels vor äußeren elektromagnetischen Feldern.An electrical cable is known from US-A-45 06 235, its insulated conductor in an absorbent material are embedded that from 85 to 94 percent by weight Ferrite particles exist. This material is used for Shielding the cable from external electromagnetic Fields.

Es ist Aufgabe der Erfindung, eine Füllmasse für ein elektrisches Kabel anzugeben, die eine Erhöhung der Leitungsinduktivität bewirkt, ohne die anderen Eigenschaften des Kabels wesentlich zu verändern. It is an object of the invention to provide a filling compound for a electrical cables specify an increase in Causes line inductance without the others To change the properties of the cable significantly.  

Die Lösung dieser Aufgabe erfolgt mit den im Hauptanspruch genannten Mitteln. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen enthalten.This problem is solved with the im Main claim means. Beneficial Refinements are contained in the subclaims.

Die neue Füllmasse bewirkt durch Erhöhung der Leitungsinduktivität eine Verringerung der Leitungsdämpfung, oder es wird bei gleichbleibender Leitungsdämpfung eine Verkleinerung der Kabelabmessungen ermöglicht. Außerdem besitzt sie eine Abschirmwirkung gegen magnetische Störfelder und verbessert das Brandverhalten der Kabel.The new filling compound brings about by increasing the A reduction in line inductance Line loss, or it will be the same Line loss a reduction in cable dimensions enables. It also has a shielding effect against magnetic interference fields and improves that Fire behavior of the cables.

Die erhöhte Leitungsinduktivität hat auch eine Verlängerung der Signallaufzeit zur Folge. Dies kann bei der Konstruktion von Verzögerungsleitungen ausgenutzt werden.The increased line inductance also has one Extension of the signal runtime results. This can happen with the construction of delay lines will.

Die Erfindung wird nachstehend anhand von Ausführungsbeispielen erläutert. Die einzige Figur zeigt ein gefülltes Kabel im Querschnitt.The invention is described below with reference to Exemplary embodiments explained. The only figure shows a filled cable in cross section.

Die Füllmasse besteht aus 1 Gewichtsteil Ferritpulver mit einer Korngröße von 4 bis 40 µm und 2 Gewichtsteilen einer gelartigen Masse. Die gelartige Masse besitzt gute elektrische Eigenschaften (Dielektrizitätskonstante DK ∼ 2.1; Verlustwinkel tan δ ∼ 10-4). Sie besteht aus einer weichen oder weichplastischen petrolatartigen Masse, die beispielsweise zu ca. 80% aus einem Paraffin mit niedrigem Molekulargewicht und zu ca. 20% aus einem Polyäthylen mit hohem Molekulargewicht zusammengesetzt ist. Statt Polyäthylen kann auch ein anderes Polymer mit hohem Molekulargewicht verwendet sein. Geeignete Massen sind beispielsweise NAPTEL oder FLEXGEL. The filling mass consists of 1 part by weight of ferrite powder with a grain size of 4 to 40 µm and 2 parts by weight of a gel-like mass. The gel-like mass has good electrical properties (dielectric constant DK ∼ 2.1; loss angle tan δ ∼ 10 -4 ). It consists of a soft or soft plastic petrolate-like mass, which is composed for example of approximately 80% of a paraffin with a low molecular weight and approximately 20% of a polyethylene with a high molecular weight. Another high molecular weight polymer can be used instead of polyethylene. Suitable materials are, for example, NAPTEL or FLEXGEL.

Die Füllmasse läßt sich wie die bekannten Füllmassen leicht in Kabel mit Isolierungen aus Thermoplasten oder Elastomeren einfüllen. Vorteilhafterweise wird die Kabelseele vor der Extrusion des Kabelmantels gefüllt. Eine Entmischung des Ferrits und des Gels tritt auch bei längerer Lagerung nicht auf.The filler can be like the known fillers easy in cables with thermoplastic or insulation Fill in elastomers. Advantageously, the Cable core filled before extruding the cable jacket. Demixing of the ferrite and the gel also occurs prolonged storage.

Das in der Figur dargestellte Kabel weist sieben Vierer auf, die von einer Seelenbewicklung 4 umgeben sind. Darüber befindet sich ein Kabelmantel, der aus einem Kunststoffinnenmantel 3, einem Aluminiumband 2 und einem Kunststoffaußenmantel 1 besteht, wobei das Aluminiumband 2 zwischen dem Kunststoffinnenmantel 3 und dem Kunststoffaußenmantel 1 angeordnet ist und als Dampfsperre wirkt.The cable shown in the figure has seven quads, which are surrounded by a soul winding 4 . Above it is a cable sheath, which consists of a plastic inner sheath 3 , an aluminum strip 2 and a plastic outer sheath 1 , the aluminum strip 2 being arranged between the plastic inner sheath 3 and the plastic outer sheath 1 and acting as a vapor barrier.

Jeder Vierer besteht aus vier von je einer Isolierung 7 umgebenen elektrischen Leitern 5. Die Zwischenräume zwischen den isolierten Leitern der Vierer und zwischen den Vierern sind mit der Füllmasse 6 gefüllt.Each quad consists of four electrical conductors 5 surrounded by insulation 7 . The spaces between the insulated conductors of the foursome and between the foursome are filled with the filling compound 6 .

Bei einem Kabel mit Kupferleitern 5 von 0,8 mm Durchmesser und einer Isolierung 7 aus Polyäthylen bewirkt die neue Füllmasse 6 eine Erhöhung der Leitungsinduktivität um den Faktor 2,5, verglichen mit einer bekannten Füllmasse.In the case of a cable with copper conductors 5 of 0.8 mm diameter and insulation 7 made of polyethylene, the new filling compound 6 increases the line inductance by a factor of 2.5 compared to a known filling compound.

Claims (6)

1. Füllmasse, insbesondere zum Füllen elektrischer Kabel, bestehend aus Ferritpulver und aus einer gelartigen Masse in einem Mischungsverhältnis zwischen 9 : 1 und 1 : 9.1. Filling compound, especially for filling electrical ones Cable consisting of ferrite powder and one gel-like mass in a mixing ratio between 9: 1 and 1: 9. 2. Füllmasse nach Anspruch 1, dadurch gekennzeichnet, daß das Ferritpulver eine Korngröße zwischen 4 und 40 µm aufweist.2. Filling compound according to claim 1, characterized in that the ferrite powder has a grain size between 4 and 40 microns having. 3. Füllmasse nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die gelartige Masse aus einem Paraffin mit niedrigem Molekulargewicht und einem Polymer mit hohem Molekulargewicht besteht.3. Filling compound according to claim 1 or 2, characterized characterized in that the gel-like mass from a Low molecular weight and one paraffin High molecular weight polymer. 4. Füllmasse nach Anspruch 3, dadurch gekennzeichnet, daß das Polymer Polyäthylen ist.4. Filling compound according to claim 3, characterized in that the polymer is polyethylene. 5. Füllmasse nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß die gelartige Masse zu ca. 80% aus Paraffin und zu ca. 20% aus Polymer besteht.5. Filling compound according to claim 3 or 4, characterized characterized that about 80% of the gel-like mass Paraffin and about 20% polymer. 6. Elektrisches Kabel enthaltend eine Füllmasse nach einem der vorhergehenden Ansprüche.6. Electrical cable containing a filling compound after any of the preceding claims.
DE3902029A 1989-01-25 1989-01-25 Filling composition for electrical cables Withdrawn DE3902029A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3902029A DE3902029A1 (en) 1989-01-25 1989-01-25 Filling composition for electrical cables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3902029A DE3902029A1 (en) 1989-01-25 1989-01-25 Filling composition for electrical cables

Publications (1)

Publication Number Publication Date
DE3902029A1 true DE3902029A1 (en) 1990-07-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE3902029A Withdrawn DE3902029A1 (en) 1989-01-25 1989-01-25 Filling composition for electrical cables

Country Status (1)

Country Link
DE (1) DE3902029A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001074480A1 (en) * 2000-03-31 2001-10-11 Unigel Limited Gel compositions
CN102270528A (en) * 2011-08-04 2011-12-07 山东昆嵛电缆有限公司 Low-voltage cable filling method
DE102018118263A1 (en) * 2018-07-27 2020-01-30 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Device for igniting a fuel mixture, transmission element for transmitting an ignition signal, ignition device and circuit device
CN111362681A (en) * 2019-12-11 2020-07-03 横店集团东磁股份有限公司 High-performance permanent magnetic ferrite magnet sintered after injection molding and preparation method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1050052B (en) * 1957-08-28 1959-02-05 Farbwerke Hoechst Aktiengesellschaft vormals Meister Lucius &. Brüning, Frankfurt/M Process for improving the mechanical properties of hydrocarbon waxes by adding olefin polymers
US3309633A (en) * 1963-01-10 1967-03-14 Mayer Ferdy Anti-parasite electric cable
FR2410343A1 (en) * 1977-11-29 1979-06-22 Mayer Ferdy HIGH FREQUENCY ANTI-PARASITE WIRE OR CABLE
DE3118706A1 (en) * 1980-05-20 1982-01-28 International Standard Electric Corp., 10022 New York, N.Y. HYDROPHOBIC GEL MIXTURE AND METHOD FOR THE PRODUCTION THEREOF
US4371742A (en) * 1977-12-20 1983-02-01 Graham Magnetics, Inc. EMI-Suppression from transmission lines
DE3818550A1 (en) * 1987-06-09 1988-12-29 Siemens Ag FILLING SUBSTANCE FOR LENGTH-TIGHT ELECTRICAL AND / OR OPTICAL CABLES

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1050052B (en) * 1957-08-28 1959-02-05 Farbwerke Hoechst Aktiengesellschaft vormals Meister Lucius &. Brüning, Frankfurt/M Process for improving the mechanical properties of hydrocarbon waxes by adding olefin polymers
US3309633A (en) * 1963-01-10 1967-03-14 Mayer Ferdy Anti-parasite electric cable
FR2410343A1 (en) * 1977-11-29 1979-06-22 Mayer Ferdy HIGH FREQUENCY ANTI-PARASITE WIRE OR CABLE
US4371742A (en) * 1977-12-20 1983-02-01 Graham Magnetics, Inc. EMI-Suppression from transmission lines
DE3118706A1 (en) * 1980-05-20 1982-01-28 International Standard Electric Corp., 10022 New York, N.Y. HYDROPHOBIC GEL MIXTURE AND METHOD FOR THE PRODUCTION THEREOF
DE3818550A1 (en) * 1987-06-09 1988-12-29 Siemens Ag FILLING SUBSTANCE FOR LENGTH-TIGHT ELECTRICAL AND / OR OPTICAL CABLES

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
- JP 54 127000. In: Patents Abstracts of Japan, E-156, Dec. 4, 1979, Vol. 3, No. 146 *
JP 59 2304 (A). In: Patents Abstracts of Japan, E-238, April 13, 1984, Vol. 8, No. 81 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001074480A1 (en) * 2000-03-31 2001-10-11 Unigel Limited Gel compositions
US7253217B2 (en) 2000-03-31 2007-08-07 Unigel Limited Gel compositions
US7816427B2 (en) 2000-03-31 2010-10-19 Unigel Limited Gel compositions
CN102270528A (en) * 2011-08-04 2011-12-07 山东昆嵛电缆有限公司 Low-voltage cable filling method
DE102018118263A1 (en) * 2018-07-27 2020-01-30 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Device for igniting a fuel mixture, transmission element for transmitting an ignition signal, ignition device and circuit device
US11462889B2 (en) 2018-07-27 2022-10-04 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Apparatus for igniting a fuel mixture, transmission element for transmitting an ignition signal, ignition device and circuit device
CN111362681A (en) * 2019-12-11 2020-07-03 横店集团东磁股份有限公司 High-performance permanent magnetic ferrite magnet sintered after injection molding and preparation method thereof

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8127 New person/name/address of the applicant

Owner name: KABELMETAL ELECTRO GMBH, 3000 HANNOVER, DE

8139 Disposal/non-payment of the annual fee