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EP1490881B1 - Cable a trois fils - Google Patents

Cable a trois fils Download PDF

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Publication number
EP1490881B1
EP1490881B1 EP03745241A EP03745241A EP1490881B1 EP 1490881 B1 EP1490881 B1 EP 1490881B1 EP 03745241 A EP03745241 A EP 03745241A EP 03745241 A EP03745241 A EP 03745241A EP 1490881 B1 EP1490881 B1 EP 1490881B1
Authority
EP
European Patent Office
Prior art keywords
neutral
conductor
cable
return line
conductor cable
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 - Lifetime
Application number
EP03745241A
Other languages
German (de)
English (en)
Other versions
EP1490881A1 (fr
Inventor
Christoph Studer
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.)
Studer Schweiz AG
Original Assignee
Studer Draht und Kabelwerk 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 Studer Draht und Kabelwerk AG filed Critical Studer Draht und Kabelwerk AG
Publication of EP1490881A1 publication Critical patent/EP1490881A1/fr
Application granted granted Critical
Publication of EP1490881B1 publication Critical patent/EP1490881B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/003—Power cables including electrical control or communication wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/04—Concentric cables

Definitions

  • the invention relates to a three-core cable for energy transmission with a frequency of at least 50 Hz, preferably at least 100 Hz, for example 400 Hz.
  • high frequency power transmission cables are used. They are needed, for example, in aircraft and the like to connect them to stand times to a fixed power grid or a mobile unit.
  • the cable should generate no adverse asymmetric voltage drops due to the sensitive to current fluctuations on-board electronics of the aircraft.
  • high-frequency energy transmission cables can also be used to power motors for spindle drives (asynchronous / synchronous motors) or brushless DC motors.
  • Known high-frequency cables for frequencies from 400 Hz consist of four stranded or twisted individual conductors, consisting of three phase conductors and a neutral and / or return conductor.
  • three phase conductors are adjacent to the neutral and / or return conductor. Between these two in turn lies the third phase conductor.
  • This asymmetry results in a disadvantageous inductive voltage drop, which occupies an enormously important position, especially in the case of cables which are operated in the higher frequency range.
  • a three-core cable In a three-core cable according to the document EP-A-0 526 081 three conductors are packed in a protective sheath. However, this cable is designed as a medium to high voltage cable in a specified range of 22,000V. In such cables with high voltages, one of the main requirements is that the conductors are encased in a correspondingly thick insulation, which is realized in the present case by these two screens for the homogeneity of the electric field and the insulation. An umbrella alone has a thickness of about 1 mm. This difference compared to the three-core cable according to the invention, the cable is very poorly flexible and thus inflexible. This is reinforced in the known cable by the distributed over the outer circumference reinforcing steel wires within the outer jacket. In addition, a thick insulation results in a high undesired inductance and thus an inductive voltage drop.
  • This second type of high-frequency power transmission cable thus has the disadvantage of a complicated and relatively expensive production.
  • these cables have a smaller surface, through which the internally generated heat loss can be released to the environment.
  • the invention is based on the object to provide an electric cable for energy transmission at a frequency of at least 50 Hz, and in particular a high-frequency power transmission cable, which does not have the aforementioned disadvantages, especially the latter the advantages of a symmetrical arrangement with the flexibility and the simplicity of the twisted Einleiterkonstrutation connect and with the same performance and reliability has a similar diameter as the well-known four-wire high-frequency cable.
  • the three-core cable according to the invention is intended, for example, for energy transmission in the higher frequency range from 400 Hz and has a symmetrical construction of three electric cables stranded together.
  • Each of the three electrical cables is essentially characterized in that it consists of a phase conductor, an insulation and a concentrically guided neutral and / or return conductor. Embedded in the concentrically guided neutral and / or return conductors or phase conductors are dummy and control cores, wherein an external protective sheath is additionally applied over these and the neutral and / or return conductors.
  • the three-core cable thus contains one concentric, outer neutral and / or return conductor per phase conductor, which however need not be used practically in completely symmetrical operation.
  • the geometric structure results in only a small inductance, which has a positive effect on the voltage drop.
  • electric cable has a wire line, namely an inner conductor 2 with several stranded together strands.
  • the inner conductor 2 is surrounded by a preferably made of plastic, hereinafter also referred to as insulation, protective cover 3.
  • dummy cores 5 and control cores 6, Embedded in the concentrically guided neutral and / or return conductors formed by, for example, eight individual conductors 4 are dummy cores 5 and control cores 6, which in turn are carried along for monitoring, monitoring, measuring and control purposes.
  • Vliessband 7 About the individual conductors 4 of the neutral and / or return conductor, the dummy cores 5 and the control wires 6 is a Vliessband 7 and above a preferably made of plastic protective sheath 8 is applied.
  • the following statements relating to the diameters of the various layers are exemplary and relate to an electric cable having an inner conductor cross-section of about 50 mm 2 and is intended for energy transmission at a frequency of 400 Hz. It goes without saying that, with a larger current conductor cross section or other frequency ranges, the different cross sections can increase or decrease accordingly.
  • the inner sleeve 2 enclosing protective cover 3 is about 0.2 to 1.4 mm thick and consists for example of a plastic tape, for example of polyester, which surrounds the inner conductor 2 with an overlap of, for example, 20 to 30% of the bandwidth, and an extruded plastic layer.
  • the control wires 6 and the dummy cores 5 are arranged symmetrically stranded.
  • the eight individual conductors 4 forming the return conductor are preferably made of copper strands with a cross-section of approximately 2.5 mm 2 each.
  • the nonwoven ribbon 7 with an overlap of, for example, 20 to 30% of the bandwidth banded, this preferably has a wall thickness of about 0.05 to 0.2 mm.
  • the sheath 8 enclosing the nonwoven web 7 is made of known material and has a wall thickness of, for example, 1.5 to 5 mm.
  • the illustrated in the figure 2 and designated as a whole with 10 three-core cable has three stranded together electric cable 1 of the type described above.
  • the three stranded electrical cable 1 can be held together in a particular embodiment of the invention at most additionally by a them enveloping, for example, designed as a bandage or hose jacket, which secures the electric cable 1 against axial displacement.
  • the three-core cable according to the invention has the advantages that it has an absolutely symmetrical voltage drop on all three wires with the same performance, which is smaller than in the case of the conventional cables.
  • a smaller mechanical bending moment is achieved by the inventive construction and it is thanks to the simple structure, the connection design in the connector easy to implement.
  • no additional center dummy wire for defined stranding is necessary, so that the cable is thereby lighter and more flexible.
  • the personal safety is increased by the inventive construction.
  • the neutral conductor carrying the earth potential must be violated. This has the consequence that in case of injury, the phase with the ground potential is shorted before you can touch it under tension.
  • the three-wire cable has further advantages, such as a clear separation of control wires and phase conductors, improved EMC behavior and a more stable distribution.
  • the three-core cable according to the invention additionally exhibits improved heat radiation.
  • the three-core cable according to the invention can be used in the frequency range from 50 Hz. It offers the symmetrical structure with the relatively large cross-section of the return conductor optimal conditions for connections of asymmetric loads.
  • the symmetrical design also offers significant advantages for flexible connections between UPS devices and data processing systems, radar stations, as well as transmitters, inverters - motor connections with higher EMC requirements, etc.
  • control wires in the neutral and / or return conductor but in the respective phase conductor, and indeed, as is the case with already known high-frequency cables.
  • the symmetrically distributed individual conductors 4 instead of stranded, arranged meandering around the phase conductor around be, and it may be the protective cover 3 consist only of an extruded plastic layer.

Landscapes

  • Communication Cables (AREA)
  • Insulated Conductors (AREA)
  • Cable Accessories (AREA)
  • Processing Of Terminals (AREA)

Claims (6)

  1. Câble à trois fils constitué de trois câbles électriques torsadés les uns avec les autres, comportant chacun un brin ayant un conducteur (2) et un fil neutre et / ou de retour, dans lequel le fil neutre et / ou de retour de chaque câble électrique est formé par un certain nombre de fils individuels (4), qui sont répartis de manière concentrique autour du conducteur (2), et une isolation (3) est appliquée entre le conducteur (2) et les fils individuels (4) répartis du fil neutre et / ou de retour, et, autour du fil neutre et / ou de retour, est également appliquée une gaine protectrice (8),
    caractérisé en ce que l'isolation (3) a une épaisseur comprise entre environ 0,2 et 1,4 mm, et en ce que, de préférence, on intègre dans chaque fil neutre et / ou de retour agencé de manière concentrique des brins réactifs (5) et / ou des brins pilotes (6), lesquels sont réalisés à des fins de contrôle, de surveillance, de mesure, et / ou de commande.
  2. Câble à trois fils selon la revendication 1, caractérisé en ce que le conducteur (2) de chaque câble électrique est revêtu d'une isolation en matière plastique fabriquée par extrusion.
  3. Câble à trois fils selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que, dans chacun des fils neutres et / ou de retour agencés de manière concentrique, constitués par exemple de huit fils individuels (4), on intègre des brins réactifs (5) et des brins pilotes (6).
  4. Câble à trois fils selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que, dans chaque conducteur (2), sont intégrés des brins pilotes, qui servent à des fins de contrôle, de surveillance, de mesure et de commande.
  5. Câble à trois fils selon l'une quelconque des revendications 1 à 4, caractérisé en ce que, sur chaque fil neutre et / ou de retour, est appliquée une nappe (7), et sur celle-ci, est appliquée la gaine protectrice (8) de préférence réalisée en matière plastique.
  6. Câble à trois fils selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les trois câbles électriques (1) sont maintenus ensemble par une enveloppe (9) qui les entoure.
EP03745241A 2002-04-03 2003-04-02 Cable a trois fils Expired - Lifetime EP1490881B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH551022002 2002-04-03
CH00551/02A CH695967A5 (de) 2002-04-03 2002-04-03 Elektrokabel.
PCT/CH2003/000211 WO2003083879A1 (fr) 2002-04-03 2003-04-02 Cable a trois fils

Publications (2)

Publication Number Publication Date
EP1490881A1 EP1490881A1 (fr) 2004-12-29
EP1490881B1 true EP1490881B1 (fr) 2006-08-09

Family

ID=28458263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03745241A Expired - Lifetime EP1490881B1 (fr) 2002-04-03 2003-04-02 Cable a trois fils

Country Status (9)

Country Link
US (1) US7164084B2 (fr)
EP (1) EP1490881B1 (fr)
CN (1) CN100405508C (fr)
AT (1) ATE336072T1 (fr)
AU (1) AU2003215483B2 (fr)
CH (1) CH695967A5 (fr)
DE (1) DE50304575D1 (fr)
ES (1) ES2270068T3 (fr)
WO (1) WO2003083879A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005050875A1 (de) * 2005-10-21 2007-04-26 Helu Kabel Gmbh Dreileiterkabel
CH698074B1 (de) * 2005-11-11 2009-05-15 Studer Ag Draht & Kabelwerk Mehrleiterkabel für die Übertragung von rechteckig verlaufenden Wechselströmen.
BRPI0810356A2 (pt) * 2007-04-20 2014-10-21 Shell Int Research Sistema de aquecimento para uma formação de subsuperfície, e, método para aquecer uma formação de subsuperfície.
US20090056975A1 (en) * 2007-08-31 2009-03-05 Christina Lin Transmission wire
US9123458B2 (en) * 2009-06-09 2015-09-01 Essential Sound Products, Inc. Power cable
CN104335294A (zh) * 2012-05-22 2015-02-04 瑞典爱立信有限公司 用于对安装于天线杆的无线电设备供电的线缆
KR102070214B1 (ko) * 2012-07-05 2020-01-28 그린 이엘엠에프 케이블 리미티드 자가 보호 특성 및 자기 간섭들에 대한 면역성을 가지는 전기 케이블들
US9449739B2 (en) * 2012-10-16 2016-09-20 The Boeing Company High power, high frequency power cable
CN102969045B (zh) * 2012-11-16 2015-06-17 江苏远洋东泽电缆股份有限公司 舰船用400Hz直流单芯电缆及其制造方法
CN102969062B (zh) * 2012-11-16 2014-12-10 江苏远洋东泽电缆股份有限公司 舰船用400Hz结构性能平衡电缆及其制造方法
CH709972B1 (de) 2014-08-11 2018-12-14 Studer Christoph Elektrokabel.
CH713982A2 (de) * 2017-07-14 2019-01-15 Studer Aeronautical Ag Elektrokabel für die Stromversorgung von Flugzeugen, Fahrzeugen, Schiffen oder anderen Einrichtungen.
CN111554435B (zh) * 2020-05-14 2021-12-28 中天科技海缆股份有限公司 一种多芯直流海缆及其生产方法
DE102022207440A1 (de) * 2022-07-21 2024-02-01 Bayerische Kabelwerke Aktiengesellschaft Starkstromkabel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1195837B (de) * 1962-07-19 1965-07-01 Siemens Ag Starkstromkabel, insbesondere fuer Hoch-spannung, mit thermoplastischer Leiter-isolierung und metallischer Einzelader-abschirmung
EP0526081A1 (fr) * 1991-07-23 1993-02-03 BICC Public Limited Company Câbles électriques et de communications

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3261907A (en) * 1964-03-30 1966-07-19 Anaconda Wire & Cable Co High frequency power cable
US3772454A (en) * 1972-11-22 1973-11-13 Steel Corp Torque balanced cable
GB2034958B (en) * 1978-11-21 1982-12-01 Standard Telephones Cables Ltd Multi-core power cable
NL7905279A (nl) * 1979-07-06 1981-01-08 Philips Nv Verbindingskabel in digitale systemen.
CN2096113U (zh) * 1991-07-29 1992-02-12 林烈超 改良结构的电线
FR2693024B1 (fr) * 1992-06-29 1994-08-19 Filotex Sa Câble mixte pour la transmission de données et la transmission d'énergie.
DE9208880U1 (de) * 1992-07-01 1992-11-19 Siemens AG, 8000 München Starkstromkabel mit längswasserdichtem Schirmbereich
US6631095B1 (en) * 1999-07-08 2003-10-07 Pgs Exploration (Us), Inc. Seismic conductive rope lead-in cable

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1195837B (de) * 1962-07-19 1965-07-01 Siemens Ag Starkstromkabel, insbesondere fuer Hoch-spannung, mit thermoplastischer Leiter-isolierung und metallischer Einzelader-abschirmung
EP0526081A1 (fr) * 1991-07-23 1993-02-03 BICC Public Limited Company Câbles électriques et de communications

Also Published As

Publication number Publication date
ES2270068T3 (es) 2007-04-01
WO2003083879A1 (fr) 2003-10-09
EP1490881A1 (fr) 2004-12-29
ATE336072T1 (de) 2006-09-15
CN100405508C (zh) 2008-07-23
AU2003215483B2 (en) 2009-01-08
CH695967A5 (de) 2006-10-31
DE50304575D1 (de) 2006-09-21
US7164084B2 (en) 2007-01-16
AU2003215483A1 (en) 2003-10-13
CN1643623A (zh) 2005-07-20
US20050167150A1 (en) 2005-08-04

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