EP1490881A1 - Dreileiterkabel - Google Patents

Dreileiterkabel

Info

Publication number
EP1490881A1
EP1490881A1 EP03745241A EP03745241A EP1490881A1 EP 1490881 A1 EP1490881 A1 EP 1490881A1 EP 03745241 A EP03745241 A EP 03745241A EP 03745241 A EP03745241 A EP 03745241A EP 1490881 A1 EP1490881 A1 EP 1490881A1
Authority
EP
European Patent Office
Prior art keywords
conductor
neutral
return
wire cable
cable according
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.)
Granted
Application number
EP03745241A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1490881B1 (de
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/de
Application granted granted Critical
Publication of EP1490881B1 publication Critical patent/EP1490881B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01B9/003—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-wire cable for energy transmission with a frequency of at least 50 Hz, preferably at least 100 Hz, for example 400 Hz.
  • So-called high-frequency energy transmission cables are used in the range of 400 Hz. They are required, for example, in the case of airplanes and the like in order to connect them to a fixed power network or a mobile unit at idle times. Due to the on-board electronics of the aircraft, which are sensitive to current fluctuations, the cable should not generate any disadvantageous asymmetrical voltage drops.
  • high-frequency energy transmission cables can also be used to supply motors for spindle drives (asynchronous / synchronous motors) or brushless DC motors.
  • the geometry of this well-known four-wire cable also creates asymmetrical electrical fields that can spread to the surrounding area.
  • the geometry of four stranded single-core cables also results in a mechanically ambiguously defined position of the arrangement, which usually has to be solved with a center element.
  • phase conductors are run twice and stranded around the centrally arranged neutral and / or return conductor. This creates a symmetrical arrangement with the neutral and / or return conductor in the center and six phase conductors stranded symmetrically around this. In this arrangement, two opposite phase conductors are connected to each other. In this design, the return conductor has half the cross-section of the phase conductor. This is a disadvantage with asymmetric loads, as is often the case with wide-body aircraft. The design has a relatively small inductance in the operating state, but it is complex and generally less flexible.
  • the three-wire cable according to the invention is intended, for example, for energy transmission in the higher frequency range from 400 Hz and has a symmetrical structure consisting of three electrical 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 conductors, an outer protective jacket also being applied over these and the neutral and / or return conductors.
  • the three-wire cable therefore contains one concentric, outer neutral and / or return conductor for each phase conductor, which, however, practically does not have to be used in completely symmetrical operation. Due to the geometric structure, there is only a small inductance, which has a positive effect on the voltage drop.
  • FIG. 2 shows a cross section through a three-wire cable according to the invention with three electrical cables stranded together according to FIG. 1.
  • the following information relating to the diameters of the various layers is exemplary and relates to an electrical cable which has an inner conductor cross section of approximately 50 mm 2 and is intended for energy transmission at a frequency of 400 Hz. It goes without saying that with a larger conductor cross-section or other frequency ranges, the different cross-sections can increase or decrease accordingly.
  • the protective sheath 3 surrounding the inner conductor 2 is approximately 0.2 to 1.4 mm thick and consists, for example, of a plastic tape, for example of polyester, which wraps the inner conductor 2 with an overlap of, for example, 20 to 30% of the bandwidth, and an extruded one Plastic layer.
  • the neutral and / or return conductor, the control wires 6 and the dummy wires 5 are arranged symmetrically stranded around the insulation 3.
  • the eight individual conductors 4 forming the return conductor preferably consist of Cu strands each having a cross section of approximately 2.5 mm 2 .
  • the nonwoven tape 7 is taped with an overlap of, for example, 20 to 30% of the bandwidth, this preferably having a wall thickness of about 0.05 to 0.2 mm.
  • the jacket 8 enclosing the fleece band 7 is made of known material and has a wall thickness of, for example, 1.5 to 5 mm.
  • the three-conductor cable shown in FIG. 2 and designated as a whole by 10 has three electrical cables 1 of the type described above which are distributed with one another.
  • the three electrical cables 1 stranded together can at most additionally be held together by a sheath enveloping them, for example in the form of a bandage or hose, which secures the electrical cables 1 against axial displacement.
  • the three-wire cable according to the invention has the advantages over the high-frequency cables described at the outset that, with the same performance, it has an absolutely symmetrical voltage drop on all three wires, which is smaller than that of the conventional cables. At the same time, a smaller mechanical bending moment is achieved by the construction according to the invention and, thanks to the simple construction, the connection design in the connecting plug is easy to implement. Furthermore, no additional center dummy wire for the defined stranding is necessary, so that the cable becomes lighter and more flexible.
  • phase conductor Before the phase conductor is touched by a metallic object the neutral conductor carrying the earth potential must be injured. This means that in the event of an injury, the phase with the earth potential is briefly closed before it can be touched under voltage.
  • the three-wire cable Compared to the known four-wire cable, the three-wire cable has other advantages, such as clear separation of control wires and phase wires, improved EMC behavior and a more stable distribution. Compared to the known cables with a symmetrical cable arrangement, the three-wire cable according to the invention additionally shows an improved heat radiation.
  • the three-wire cable according to the invention can be used in the frequency range from 50 Hz.
  • the symmetrical structure with the relatively large cross-section of the return conductor offers optimal conditions for connecting asymmetrical loads.
  • the symmetrical structure also offers distinctive advantages for flexible connections between UPS devices and data processing systems, radar stations, as well as transmitter systems, inverter - motor connections with higher EMC requirements, etc.
  • control wires not in the neutral and / or return conductor but in the respective phase conductor, in the same way as is the case with already known high-frequency cables.
  • the symmetrically distributed individual conductors 4 can be arranged in a meandering manner around the phase conductor instead of being stranded be, and the protective cover 3 can only consist of an extruded plastic layer.

Landscapes

  • Communication Cables (AREA)
  • Insulated Conductors (AREA)
  • Cable Accessories (AREA)
  • Processing Of Terminals (AREA)
EP03745241A 2002-04-03 2003-04-02 Dreileiterkabel Expired - Lifetime EP1490881B1 (de)

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 (de) 2002-04-03 2003-04-02 Dreileiterkabel

Publications (2)

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

Family

ID=28458263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03745241A Expired - Lifetime EP1490881B1 (de) 2002-04-03 2003-04-02 Dreileiterkabel

Country Status (9)

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

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.
US7950453B2 (en) * 2007-04-20 2011-05-31 Shell Oil Company Downhole burner systems and methods for heating subsurface formations
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
WO2013176601A1 (en) * 2012-05-22 2013-11-28 Telefonaktiebolaget L M Ericsson (Publ) Cable for powering of mast mounted radio equipment
EP2870609B1 (en) * 2012-07-05 2021-08-25 Green ELMF Cables Ltd. Electric cables having self-protective properties and immunity to magnetic interferences
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

Family Cites Families (10)

* 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
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.
GB9115888D0 (en) * 1991-07-23 1991-09-04 Bicc Plc Electric & communications cables
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 (zh) * 1992-07-01 1992-11-19 Siemens Ag, 8000 Muenchen, De
US6631095B1 (en) * 1999-07-08 2003-10-07 Pgs Exploration (Us), Inc. Seismic conductive rope lead-in cable

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03083879A1 *

Also Published As

Publication number Publication date
AU2003215483A1 (en) 2003-10-13
DE50304575D1 (de) 2006-09-21
EP1490881B1 (de) 2006-08-09
ATE336072T1 (de) 2006-09-15
CN100405508C (zh) 2008-07-23
CN1643623A (zh) 2005-07-20
US7164084B2 (en) 2007-01-16
WO2003083879A1 (de) 2003-10-09
CH695967A5 (de) 2006-10-31
ES2270068T3 (es) 2007-04-01
US20050167150A1 (en) 2005-08-04
AU2003215483B2 (en) 2009-01-08

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