DE3241463C1 - Electrical cable having a screen surrounding the core - Google Patents

Electrical cable having a screen surrounding the core

Info

Publication number
DE3241463C1
DE3241463C1 DE19823241463 DE3241463A DE3241463C1 DE 3241463 C1 DE3241463 C1 DE 3241463C1 DE 19823241463 DE19823241463 DE 19823241463 DE 3241463 A DE3241463 A DE 3241463A DE 3241463 C1 DE3241463 C1 DE 3241463C1
Authority
DE
Germany
Prior art keywords
cable
core
another
wires
longitudinal direction
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
Application number
DE19823241463
Other languages
German (de)
Inventor
Heinz Dr.rer.nat. 7847 Badenweiler Heumann
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.)
Kabel Rheydt AG
Original Assignee
AEG Telefunken 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 AEG Telefunken Kabelwerke AG filed Critical AEG Telefunken Kabelwerke AG
Priority to DE19823241463 priority Critical patent/DE3241463C1/en
Application granted granted Critical
Publication of DE3241463C1 publication Critical patent/DE3241463C1/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00Power cables
    • H01B9/02Power cables with screens or conductive layers, e.g. for avoiding large potential gradients

Landscapes

  • Communication Cables (AREA)

Abstract

The invention relates to an electrical cable having a screen which surrounds the core and consists of a plurality of electrically conductive wires which are twisted around the core in the cable longitudinal direction and make electrical contact with one another for example in the cable circumferential direction, by means of metallic conductors. In order to achieve the object of designing a cable of the type mentioned initially such that the electrical transverse connections of the screening wires are satisfactory and are protected against interference influences, the screening is constructed as a mesh strip which runs in a longitudinal direction of the cable and consists of wires which run parallel to one another and are connected to one another by means of transverse conductors which follow one another at regular intervals and are welded on.

Description

Patentansprüche: 1. Elektrisches Kabel mit einer die Seele umgebenden Abschirmung aus mehreren, in Kabel.Claims: 1. Electrical cable with a surrounding the soul Shielding from several, in cable.

längsrichtung um die Seele verseilten elektrisch leitenden Drähten, welche etwa in Kabelumfangsrichtung durch metallische Leiter miteinander elektrisch kontaktiert sind, d a du r c h g e k e n n -z ei c h n e t, daß die Abschirmung in eine extrudierte Kunststoffschicht eingebettet und als in Längsrichtung des Kabels verlaufendes Gitterband ausgebildet ist, welches aus parallel zueinander verlaufenden Drähten besteht, die durch in regelmäßigen Abständen aufeinanderfolgende und aufgeschweißte Querleiter miteinander verbunden sind. electrically conductive wires stranded lengthways around the core, which are electrically connected to one another approximately in the circumferential direction of the cable through metallic conductors are contacted, that is, the shielding embedded in an extruded plastic layer and as in the longitudinal direction of the cable running grid band is formed, which is made of parallel to each other Wires is made by successive and welded on at regular intervals Cross conductors are interconnected.

2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß das Gitterband wendelförmig um die Seele verseilt ist. 2. Arrangement according to claim 1, characterized in that the grid belt is twisted helically around the soul.

3. Anordnung nach Anspruch 1, dadurch-gekennzeichnet, daß die Breite des Gitterbandes etwa dem Kabelumfang entspricht und längseinlaufend um die Kabelseele gefaltet ist. 3. Arrangement according to claim 1, characterized in that the width of the grid band corresponds approximately to the cable circumference and runs lengthways around the cable core is folded.

Die Erfindung bezieht sich auf eine im Oberbegriff des Anspruchs 1 bezeichnete und nach der DE-OS 27 07 421 bekannte Anordnung. The invention relates to one in the preamble of the claim 1 designated and according to DE-OS 27 07 421 known arrangement.

Es ist erforderlich, daß parallel zueinander in Kabellängsrichtung um die Seele verseilte Einzeldrähte einer Abschirmung durch Querleiter elektrisch miteinander kontaktiert sind. Das wird üblicherweise durch eine wendelförmige Umwicklung der Schirmdrähte mit einem Kupferband erreicht. Der Berührungskontakt kann im Verlauf der Zeit beeinträchtigt werden. Eine solche Gefahr besteht insbesondere dann, wenn in den Bereich der Abschirmung Feuchtigkeit eintritt, so daß zwischen den Berührungsstellen infolge Korrosion Kontaktunterbrechungen entstehen. Auch bei betriebsmäßiger Erwärmung der Kabelseele können die querleitenden Bebänderungen von den Längsdrähten abgehoben werden. It is necessary that they are parallel to each other in the longitudinal direction of the cable Single wires stranded around the core of a shield by means of electrical cross conductors are contacted with each other. This is usually done with a helical wrap the shield wires reached with a copper tape. The touch contact can be in the course be affected over time. Such a risk exists especially when moisture enters the area of the shield, so that between the contact points as a result of corrosion Contact interruptions arise. Even with operational heating of the cable core, the transversely conductive straps can be lifted off the longitudinal wires will.

Der Erfindung liegt die Aufgabe zugrunde, ein Kabel der eingangs genannten Art so zu gestalten, daß die elektrischen Querverbindungen der Schirmdrähte einwandfrei und gegen Störeinflüsse gesichert sind. The invention has for its object to provide a cable of the initially named type so that the electrical cross connections of the shield wires are flawless and secured against interference.

Die Lösung dieser Aufgabe gelingt durch die im Anspruch 1 gekennzeichneten Merkmale. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet. This problem is solved by what is characterized in claim 1 Characteristics. Advantageous further developments of the invention are set out in the subclaims marked.

Wegen der Einbettung der Schirmdrähte in eine extrudierte Kunststoffschicht ist das Aufbauelement Schirm gegen den Zutritt von Feuchtigkeit gesichert. Da bei einer losen Kontaktierung der um die Seele verseilten Schirmdrähte mit querleitenden Elemeriten die Gefahr besteht, daß Bestandteile der extrudierten Kunststoffschicht zwischen die Kontaktierungsstellen dringen, werden die Längs- und Querleiter erfindungs gemäß an den Berührungsstellen durch Schweißen miteinander verbunden. Da es schwierig ist, Schweißstellen zwischen Längsdrähten und einem aufgewendelten Kupferband im Verlaufe der Kabelfertigung herzustellen, wird der komplette Schirmleiter in Form eines Gitterbandes vorgefertigt. Ein solches Gitterband kann vor dem Extrudieren der aus Kunststoff bestehenden Einbettungsschicht um die Kabelseele gewendelt werden. Es ist jedoch auch möglich, ein solches Band mit entsprechender Breite in Längsrichtung um die Kabelseele zu falten. Because of the embedding of the shield wires in an extruded plastic layer the screen element is secured against the ingress of moisture. Included a loose contact between the shielding wires stranded around the core and transversely conductive ones Elemeriten there is a risk that components of the extruded plastic layer penetrate between the contact points, the longitudinal and transverse conductors are fiction connected to each other at the points of contact by welding. Because it's difficult is, welds between longitudinal wires and a coiled copper tape in the In the course of the cable production process, the complete shield conductor is in shape prefabricated a grid band. Such a grid tape can be used prior to extrusion the plastic embedding layer is wound around the cable core. However, it is also possible to use such a band with a corresponding width in the longitudinal direction to fold the cable core.

Claims (1)

Die Einbettungsschicht kann eine für den Kabelaufbau ohnehin erforderliches Aufbauelement sein wie eine Füllmasse, eine halbleitende Schicht oder ein Innenmantel. Da alle Schweißstellen vollständig von der homogenen Einbettungsschicht umhüllt sind, können sie nicht korrodieren und brauchen deshalb nur relativ schwach und punktförmig ausgebildet zu sein. The embedding layer can anyway be necessary for the cable structure Be a structural element such as a filling compound, a semiconducting layer or an inner jacket. Because all welds are completely encased by the homogeneous embedding layer are, they cannot corrode and therefore only need relatively weak and to be formed punctiform.
DE19823241463 1982-11-10 1982-11-10 Electrical cable having a screen surrounding the core Expired DE3241463C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19823241463 DE3241463C1 (en) 1982-11-10 1982-11-10 Electrical cable having a screen surrounding the core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823241463 DE3241463C1 (en) 1982-11-10 1982-11-10 Electrical cable having a screen surrounding the core

Publications (1)

Publication Number Publication Date
DE3241463C1 true DE3241463C1 (en) 1984-03-01

Family

ID=6177702

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823241463 Expired DE3241463C1 (en) 1982-11-10 1982-11-10 Electrical cable having a screen surrounding the core

Country Status (1)

Country Link
DE (1) DE3241463C1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2707421A1 (en) * 1977-02-21 1978-08-24 Kabel Metallwerke Ghh Electric cable mfr. - where wound wire sheath is held in place by winding of consumable insulating tape

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2707421A1 (en) * 1977-02-21 1978-08-24 Kabel Metallwerke Ghh Electric cable mfr. - where wound wire sheath is held in place by winding of consumable insulating tape

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: AEG KABEL AG, 4050 MOENCHENGLADBACH, DE

8327 Change in the person/name/address of the patent owner

Owner name: KABEL RHEYDT AG, 4050 MOENCHENGLADBACH, DE

8339 Ceased/non-payment of the annual fee