EP0921531A2 - Ligne électrique flexible - Google Patents

Ligne électrique flexible Download PDF

Info

Publication number
EP0921531A2
EP0921531A2 EP98402930A EP98402930A EP0921531A2 EP 0921531 A2 EP0921531 A2 EP 0921531A2 EP 98402930 A EP98402930 A EP 98402930A EP 98402930 A EP98402930 A EP 98402930A EP 0921531 A2 EP0921531 A2 EP 0921531A2
Authority
EP
European Patent Office
Prior art keywords
wires
conductors
line according
protective conductor
screen
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
EP98402930A
Other languages
German (de)
English (en)
Other versions
EP0921531A3 (fr
EP0921531B1 (fr
Inventor
Ferdinand Grögl
Thomas Hähner
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.)
Nexans SA
Original Assignee
Alcatel CIT SA
Alcatel SA
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 Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Publication of EP0921531A2 publication Critical patent/EP0921531A2/fr
Publication of EP0921531A3 publication Critical patent/EP0921531A3/fr
Application granted granted Critical
Publication of EP0921531B1 publication Critical patent/EP0921531B1/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
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
    • H01B7/041—Flexible cables, conductors, or cords, e.g. trailing cables attached to mobile objects, e.g. portable tools, elevators, mining equipment, hoisting cables

Definitions

  • the invention relates to a flexible electrical cable for towing at least three wires made of insulated conductors, at least one for all wires effective protective conductor and a common electrical shield surrounding all wires (Catalog K 37, July 1994, "Cables and Lines" from U.I. LAPP GmbH & Co. KG, Stuttgart, Page 57).
  • Such lines are used, for example, as connecting lines between one Electric motor and a frequency converter used.
  • the cables are constantly moved, especially in drag chains.
  • both shielded and unshielded cables are listed.
  • the shielded version is used when there are special demands on the electromagnetic Compatibility (EMC).
  • the shield Due to the asymmetrical structure of such shielded cables different between the wires and the protective conductor depending on the shielding Operating capacities and inductors, which in operation lead to equalizing currents to earth to lead.
  • the shield is insulated from the protective conductor. That has to Consequence that between the shield and the protective conductor also line coverings (capacities and inductors) exist. It can therefore be in the harmonic range (MHz range) especially in the case of relatively long lines, build a resonance circuit that is too uncontrolled Equalizing currents against earth. This can be an undesired response to the Residual current circuit breaker.
  • the invention has for its object to design the line described above so that disturbing equalizing currents can be largely avoided.
  • the line is therefore particularly as Trailing cable suitable for connecting a frequency converter to a motor.
  • 1 to 3 show cross sections of three different versions of the line according to the invention.
  • the line shown in cross section in FIG. 1 has three wires 1, 2 and 3 which are stranded together.
  • the wires 1, 2 and 3 are of a common electrical Surround screen 4, over which an existing plastic, such as polyurethane Coat 5 is applied.
  • the line has three wires. It however, there may also be more than three wires.
  • Each wire 1 or 2 or 3 consists of an easily bendable electrical conductor 6, the is constructed, for example, as a stranded conductor made of copper wires. Over the conductor 6 is one for example, consisting of cross-linked polyethylene insulation 7 attached by a Partial protective conductor 8 is surrounded. The partial protective conductor 8 is of a semiconducting layer 9 surround.
  • the structure of the wires 1, 2 and 3 is only in Fig. 1 for the sake of clarity Wire 1 with reference numerals.
  • the one in the gusset between wires 1, 2 and 3 attached filling elements 10 are made of plastic. It can also be semiconducting Be used material.
  • the wires 1, 2 and 3 lie against each other, so that their semiconducting layers 8 each other touch. They also touch the screen 4.
  • the semiconducting layers 8 can consist for example of a semiconducting fleece or a metallized fleece.
  • the three Partial protective conductor 8 are preferably made of copper. For example, you can use wires exist that are roped around the insulation 7 of the wires 1, 2 and 3.
  • the partial protective conductor 8 can also be designed as a braid made of copper wires.
  • the cross section of the Partial protective conductor 8 is dimensioned such that it is approximately one third of the cross section for one Lines required cross-section corresponds. Whose electrically effective cross section must be guaranteed by the three protective conductor 8.
  • All wires 1, 2 and 3 have the same operating capacity and with this construction of the line Inductance. There are also no partial capacities between wires 1, 2 and 3 with each other and between wires 1, 2 and 3 and the screen 4. Interfering Equalization currents do not occur with this line.
  • a control wire pair 11 which consists of two insulated electrical conductors 12 and 13 consists.
  • Such control wires are used for the transmission of signals for process control, for example for switching a motor connected by means of the line on and off.
  • the control wire pair 11 can, according to FIG. 2, have a common electrical screen 14 be surrounded, over which there is also a semiconducting layer 9.
  • the screen 14 can be a Braid of copper wires.
  • the screen 14 can also include plastic-clad metal foil.
  • control wire pair 11 it is also possible to have only one wrapping 15 made of insulating material to attach over the control wire pair 11. That is usually enough for an effective one Shielding, since the control wire pair 11 with the partial protective conductors 8 and the common Screen 4 is completely surrounded by screens.
  • the filling elements 16 and 17 of the Control wire pairs 11 are made of plastic.
  • the common screen 4 can additionally have a semiconducting layer 18 with the same Structure such as the layers 9, over which the jacket 5 is located.
  • the other Structure of the line corresponds to that of FIG. 1. Also in the embodiments of the line 2 and 3 compensating currents are avoided.

Landscapes

  • Communication Cables (AREA)
  • Insulated Conductors (AREA)
EP98402930A 1997-12-03 1998-11-23 Ligne électrique flexible Expired - Lifetime EP0921531B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19753526A DE19753526A1 (de) 1997-12-03 1997-12-03 Flexible elektrische Leitung
DE19753526 1997-12-03

Publications (3)

Publication Number Publication Date
EP0921531A2 true EP0921531A2 (fr) 1999-06-09
EP0921531A3 EP0921531A3 (fr) 2000-05-31
EP0921531B1 EP0921531B1 (fr) 2004-03-31

Family

ID=7850545

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98402930A Expired - Lifetime EP0921531B1 (fr) 1997-12-03 1998-11-23 Ligne électrique flexible

Country Status (2)

Country Link
EP (1) EP0921531B1 (fr)
DE (2) DE19753526A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103915199A (zh) * 2013-08-26 2014-07-09 安徽航天电缆集团有限公司 一种变频器用主回路电力电缆

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19839900C2 (de) * 1998-09-02 2002-06-20 Draka Telekom Gmbh & Co Kg Kabel für Fernmelde- und Sicherungsanlagen
DE10057289A1 (de) * 2000-11-17 2002-07-11 Kromberg & Schubert Datenübertragungskabel, insbesondere USB Kabel
US8426734B2 (en) 2010-06-28 2013-04-23 Ametek, Inc. Low noise ECG cable and electrical assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE902988C (de) * 1941-06-29 1954-02-01 Siemens Ag Bewegliches elektrisches Mehrleiterkabel, insbesondere fuer Baggermaschinen
FR2360965A1 (fr) * 1976-08-05 1978-03-03 Cables De Lyon Geoffroy Delore Cable sous-marin d'energie allege
DE8906828U1 (fr) * 1989-06-03 1990-07-05 Felten & Guilleaume Energietechnik Ag, 5000 Koeln, De

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE899960C (de) * 1942-03-07 1953-12-17 Siemens Ag Bewegliches elektrisches Anschlusskabel fuer ortsveraendeliche Grossgeraete
DE3428643A1 (de) * 1983-11-12 1986-02-27 kabelmetal electro GmbH, 3000 Hannover Mehradriges flexibles elektrisches kabel mit steuerleitungen
DE29613870U1 (de) * 1996-08-10 1996-09-26 Alcatel Kabel Ag Flexible elektrische Starkstromleitung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE902988C (de) * 1941-06-29 1954-02-01 Siemens Ag Bewegliches elektrisches Mehrleiterkabel, insbesondere fuer Baggermaschinen
FR2360965A1 (fr) * 1976-08-05 1978-03-03 Cables De Lyon Geoffroy Delore Cable sous-marin d'energie allege
DE8906828U1 (fr) * 1989-06-03 1990-07-05 Felten & Guilleaume Energietechnik Ag, 5000 Koeln, De

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103915199A (zh) * 2013-08-26 2014-07-09 安徽航天电缆集团有限公司 一种变频器用主回路电力电缆

Also Published As

Publication number Publication date
EP0921531A3 (fr) 2000-05-31
EP0921531B1 (fr) 2004-03-31
DE59811092D1 (de) 2004-05-06
DE19753526A1 (de) 1999-06-10

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