DE2119573A1 - Power cable - with space between sheathed leads filled with weakly conductive polyurethane foam - Google Patents
Power cable - with space between sheathed leads filled with weakly conductive polyurethane foamInfo
- Publication number
- DE2119573A1 DE2119573A1 DE19712119573 DE2119573A DE2119573A1 DE 2119573 A1 DE2119573 A1 DE 2119573A1 DE 19712119573 DE19712119573 DE 19712119573 DE 2119573 A DE2119573 A DE 2119573A DE 2119573 A1 DE2119573 A1 DE 2119573A1
- Authority
- DE
- Germany
- Prior art keywords
- power cable
- polyurethane foam
- space
- filled
- weakly conductive
- 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
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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1895—Internal space filling-up means
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- 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
- H01B7/288—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable using hygroscopic material or material swelling in the presence of liquid
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- 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
-
- 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
Landscapes
- Insulated Conductors (AREA)
Abstract
Description
S t a r k s t r o m k a b e l Die Erfindung betrifft ein Starkstromkabel mit- mehreren einzeln mit Kunstsoff isolierten Adern, welche mit einer gemeinsamen Umhüllung umgeben sind.S t a r k s t r o m k a b e l The invention relates to a power cable with several wires individually insulated with plastic, which are connected to a common Enclosure are surrounded.
Derartige Starkstromkabel bestehen in der Regel aus drei Leitern, die einzeln isoliert sind. Um einen radialen Verlauf der Feldinien um eine jede Ader zu erreichen und damit die elektrische Sicherheit des Kabels zu erhöhen, ist jeder der Leiter mit liner Abschirmung, beispielsweise aus leitfähigem Kunstst9rf, versehen. Die Adern sind in der Regel miteinander verseilt. Zum Schutz der Adern des Kabels vor Beschädigungen durch äußere Einflüsse sind sie mit einer gemeinsamen äußeren Umhüllung versehen, welche beispielsweise in Form eines Wellrohrmantels oder einer Bewicklung und Bewchrung aufgebracht sein kann. Die äußere Umhüllung muß @ierbei so dimensioniert sein, daß sic Kurzschlußströme führen kann.Such power cables usually consist of three conductors, which are individually isolated. Around a radial course of the field lines around each Reaching the core and thus increasing the electrical safety of the cable is each of the conductors with liner shielding, for example made of conductive plastic, Mistake. The cores are usually stranded together. To protect the cores of the cable from damage by external influences they are with a common outer Envelope provided, which for example in the form of a corrugated pipe jacket or a Wrapping and reinforcement can be applied. The outer covering must be @ierbei be dimensioned so that it can carry short-circuit currents.
Aus Sicherheitsgründen werden die Abschirmungen der Adern auf Erdpotential gebracht. Hierzu sind die Zwickel mit leitfähigen Beiläufen oder oxtrudierten leitfähigen Füllungen ausgefüllt, so daß ein elektrischer Koatakt zwischen den Aderabschirmungen und der äußeren Umhüllung der Kabels besteht.For safety reasons, the wire shields are at ground potential brought. For this purpose, the gussets are provided with conductive fillings or extruded conductive ones Fillings filled in, so that an electrical co-contact between the core shields and the outer covering of the cable.
Diese Zwickelfüllungen dienen gleichzeitig zur Vermeldung von Deformierungen der äußeron Umhüllung und damit Gefährdungen der Adern und zur Erzielung einer gewissen Längswasserdichtigkeit der Anordnung. Der Nachtteil der bekannten Strakstromkabel dieser Art liegt darin, daß die leitfähigen Beiläufe und extrudierten Füllungen sehr unwirtschaftlich sind, da sic hohen Aufwand erfordern. Aißerdem läßt sich mit einer solchen Zwickelfüllung auch keine zuverlässige Abdichtung der Anordung in Längsrichtung bewirken.These gusset fillings also serve to prevent deformations the outer covering and thus endangerment of the veins and to achieve a certain Longitudinal watertightness of the arrangement. The night part of the well-known Strakstromkabel this type lies in the conductive drains and extruded fillings are very uneconomical because they require a lot of effort. In addition, can be with such a gusset filling also does not provide a reliable seal for the arrangement Cause longitudinal direction.
Aufgabe der vorliegenden Erfindung Ist es, ein längswasserdichtes Starkstromkabel aufzuzeigen, bei welchem auf der Kontakt zwischen Abschirmung und äußerer Umhüllung einfache und wirtschaftliche Art hergestellt ist. Gelöst wird diese Aufgabe gemäß der Erfindung dadurch, daß die Zwickelräume innerhalb der gemeinsamen Umhüllung mit einem elektrisch leitenden Kunststoffschaum gefüllt sind. Als Kunststoffschaum ist insbesondere ein elektrisch schwach leitend gemachter Polyurethanschaum vorgesehen.The object of the present invention is to provide a longitudinally watertight Power cable to show where the contact between the shield and outer covering is made simple and economical type. Is resolved this object according to the invention in that the gusset spaces within the common Enclosure are filled with an electrically conductive plastic foam. As plastic foam In particular, a polyurethane foam made electrically weakly conductive is provided.
Der Vorteil des erfindungsgemäßen Starkstromkabels. Ist darin zu sehen, daß seine Herstellung überaus einfach und wirtschaftlich ist. Der Kabelaufbau ist kompakt und bietct eine zuverlässige Längswasserdichtigkeit sowie einen ausreichenden elektrischen und mechanischen Schutz. Die zuverlässige Längswasserdichtigkeit und die Verwendung de schwach leitenden Kunststoffschaums als Füllmittel für die Zwickelräume und die auf die Aderisolierung aufgebrachte Schicht aus elektrisch leitendem Material machen die Aufbringung von Metallmänteln zuf die Aderisolierungen entbehrlich, wenn die äußere Umhüllung kurzschlußfest dimensioniert ist.The advantage of the power cable according to the invention. Can be seen in it that its manufacture is extremely simple and economical. The cable structure is compact and offers reliable longitudinal watertightness as well as adequate electrical and mechanical protection. The reliable longitudinal watertightness and the use de weakly conductive plastic foam as a filler for the interstices and the Make a layer of electrically conductive material applied to the core insulation the application of metal sheaths to the core insulation is dispensable if the outer sheath is dimensioned to be short-circuit proof.
Ein Ausführungsbeispiel des Starkstromkabels nach der Erfindung ist in der Zeichnung dargestellt. 1 sind die Leiter des Kabels, die einzeln jeweils mit einer halbleitender, Schicht 2, einer Aderisolierung 3 und einer schwach leitenden Schicht 4 umgeben sind. Die Adern liegen gemeinsam in einem Metallwellmantel G, der auf seiner Außenseite mit einer Korrosions-Schutzschicht 7 und einer Schutzhülle 8 versehen sein kann.An embodiment of the power cable according to the invention is shown in the drawing. 1 are the conductors of the cable, individually each with a semiconducting layer 2, a core insulation 3 and a weakly conductive one Layer 4 are surrounded. The cores lie together in a corrugated metal jacket G, the one on its outside with a corrosion protection layer 7 and a protective cover 8 can be provided.
Die Zwickelraume innerhalb des Metallwellmantels 6 und zwiehen den Kabeladern sind mit eie schwach leitenden Kunststoffschaum 5 ausgefüllt.The interstices within the corrugated metal jacket 6 and between the Cable cores are filled with a weakly conductive plastic foam 5.
@ S. Zerchr@lbung @ Bl. Zeinung. m. 1 Fig.@ S. Zerchr @ lbung @ Bl. Zeinung. with 1 fig.
@ Patentanspüche Patentansprüche @ Patent claims Patent claims
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712119573 DE2119573A1 (en) | 1971-04-17 | 1971-04-17 | Power cable - with space between sheathed leads filled with weakly conductive polyurethane foam |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712119573 DE2119573A1 (en) | 1971-04-17 | 1971-04-17 | Power cable - with space between sheathed leads filled with weakly conductive polyurethane foam |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2119573A1 true DE2119573A1 (en) | 1972-11-02 |
Family
ID=5805498
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19712119573 Pending DE2119573A1 (en) | 1971-04-17 | 1971-04-17 | Power cable - with space between sheathed leads filled with weakly conductive polyurethane foam |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2119573A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2678763A1 (en) * | 1991-07-02 | 1993-01-08 | Thomson Csf | Connection cable, especially for an intracavitary probe |
EP1921635A1 (en) * | 2006-11-10 | 2008-05-14 | Nexans | Electrical connecting cable for a motor vehicle sub-unit |
WO2013131787A1 (en) * | 2012-03-08 | 2013-09-12 | Tyco Electronics Amp Gmbh | Cable having electrical shielding and seal |
CN104409147A (en) * | 2014-11-19 | 2015-03-11 | 浙江汉维通信器材有限公司 | Plastic flexible foam filler |
-
1971
- 1971-04-17 DE DE19712119573 patent/DE2119573A1/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2678763A1 (en) * | 1991-07-02 | 1993-01-08 | Thomson Csf | Connection cable, especially for an intracavitary probe |
EP1921635A1 (en) * | 2006-11-10 | 2008-05-14 | Nexans | Electrical connecting cable for a motor vehicle sub-unit |
WO2013131787A1 (en) * | 2012-03-08 | 2013-09-12 | Tyco Electronics Amp Gmbh | Cable having electrical shielding and seal |
US9613731B2 (en) | 2012-03-08 | 2017-04-04 | Te Connectivity Germany Gmbh | Cable having electrical shielding and seal |
CN104409147A (en) * | 2014-11-19 | 2015-03-11 | 浙江汉维通信器材有限公司 | Plastic flexible foam filler |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OHW | Rejection |