EP0118390B1 - Stranded conductor for flexible electrical cables - Google Patents

Stranded conductor for flexible electrical cables Download PDF

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Publication number
EP0118390B1
EP0118390B1 EP84730007A EP84730007A EP0118390B1 EP 0118390 B1 EP0118390 B1 EP 0118390B1 EP 84730007 A EP84730007 A EP 84730007A EP 84730007 A EP84730007 A EP 84730007A EP 0118390 B1 EP0118390 B1 EP 0118390B1
Authority
EP
European Patent Office
Prior art keywords
stranded
stranded conductor
bundles
wires
elements
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
EP84730007A
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German (de)
French (fr)
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EP0118390A1 (en
Inventor
Albert Dipl.-Ing. Bauer
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.)
Siemens AG
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0118390A1 publication Critical patent/EP0118390A1/en
Application granted granted Critical
Publication of EP0118390B1 publication Critical patent/EP0118390B1/en
Expired 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/08—Several wires or the like stranded in the form of a rope

Definitions

  • the invention is in the field of electrical cables and wires and can be used in the structural design of a stranded conductor for flexible electrical lines.
  • Stranded conductors for electrical cables and wires consist of one or more stranded elements (bundles), which are made by stranding or twisting several fine individual wires.
  • stranded strand elements the individual wires are firmly assigned to one another in layers. As a result of the layer structure, these strand elements contain a very specific number of individual wires. In the case of strangled strand elements, the individual wires are not clearly assigned to one another.
  • These stranded elements can consist of any number of individual wires in the range between 10 and 100 wires. Constructions are also common in which a smaller number of individual wires form a choked sub-element and several choked sub-elements form the actual strand element, namely the bundle (DE-A-29 25 050).
  • the invention is based on the object of constructing a stranded conductor which has an electrically effective cross section of at least 4 mm 2 in such a way that - compared to the known structures - the same is electrical effective cross section results in a smaller spatial cross section.
  • additional strand elements are arranged in the gusset spaces of the stranded bundles.
  • the electrically effective cross section of the stranded bundles and thus also the spatial cross section of these bundles can be chosen to be smaller. This results in a reduced diameter of the stranded conductor as a whole. This results in lower material consumption when applying the insulation for a given wall thickness. As a result of the smaller diameter of the stranded conductor and thus also the wire, smaller dimensions in the core and outer diameter occur in the case of multi-core cables, so that less material is used for the inner and outer sheath.
  • the stranded elements arranged in the gusset spaces can be stranded or choked elements. However, strands are preferably also considered, in which several fine wires are combined into a stranded element without being twisted or unwrapped. Fine wires are used for the strand elements arranged in the gusset spaces, the diameter of which is smaller or at most equal to the diameter of the wires used for the bundles.
  • the diameter reduction of the new stranded conductor is particularly important when three or four bundles form a stranded conductor, since this results in relatively large gusset spaces.

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  • Non-Insulated Conductors (AREA)
  • Insulated Conductors (AREA)

Description

Die Erfindung liegt auf dem Gebiet der elektrischen Kabel und Leitungen und ist bei der konstruktiven Ausgestaltung eines Litzenleiters für flexible elektrische Leitungen anzuwenden.The invention is in the field of electrical cables and wires and can be used in the structural design of a stranded conductor for flexible electrical lines.

Litzenleiter für elektrische Kabel und Leitungen bestehen aus einem oder mehreren Litzenelementen (Bündeln), die durch Verseilen oder Verwürgen mehrerer feiner Einzeldrähte hergestellt sind. Bei verseilten Litzenelementen sind die Einzeldrähte einander lagenweise fest zugeordnet. Diese Litzenelemente enthalten infolge des Lagenaufbaus eine ganz bestimmte Anzahl von Einzeldrähten. Bei verwürgten Litzenelementen sind die Einzeldrähte einander nicht eindeutig zugeordnet. Diese Litzenelemente können aus beliebig vielen Einzeldrähten im Bereich zwischen 10 und 100 Drähten bestehen. Dabei sind auch Aufbauten üblich, bei denen jeweils eine kleinere Anzahl von Einzeldrähten ein verwürgtes Unterelement und mehrere miteinander verwürgte Unterelemente das eigentliche Litzenelement, nämlich das Bündel, bilden (DE-A-29 25 050).Stranded conductors for electrical cables and wires consist of one or more stranded elements (bundles), which are made by stranding or twisting several fine individual wires. In stranded strand elements, the individual wires are firmly assigned to one another in layers. As a result of the layer structure, these strand elements contain a very specific number of individual wires. In the case of strangled strand elements, the individual wires are not clearly assigned to one another. These stranded elements can consist of any number of individual wires in the range between 10 and 100 wires. Constructions are also common in which a smaller number of individual wires form a choked sub-element and several choked sub-elements form the actual strand element, namely the bundle (DE-A-29 25 050).

Für den konstruktiven Aufbau einer beweglichen, mehradrigen Starkstromleitung ist es an sich bekannt, in den Zwickelräumen der verseilten Hauptadern zusätzliche Adern in Form von leitgummiumhüllten Hilfsleitern anzuordnen (DE-B-1 028 644).For the construction of a movable, multi-core power line, it is known per se to arrange additional cores in the gusset spaces of the stranded main cores in the form of auxiliary conductors covered with conductive rubber (DE-B-1 028 644).

Ausgehend von einem Litzenleiter mit den Merkmalen des Oberbegriffes des Anspruches 1 liegt der Erfindung die Aufgabe zugrunde, einen Litzenleiter, der einen elektrisch wirksamen Querschnitt von wenigstens 4 mm2 aufweist, so aufzubauen, dass sich - im Vergleich zu den bekannten Aufbauten - bei gleichem elektrisch wirksamen Querschnitt ein kleinerer räumlicher Querschnitt ergibt.Proceeding from a stranded conductor with the features of the preamble of claim 1, the invention is based on the object of constructing a stranded conductor which has an electrically effective cross section of at least 4 mm 2 in such a way that - compared to the known structures - the same is electrical effective cross section results in a smaller spatial cross section.

Zur Lösung dieser Aufgabe ist gemässder Erfindung vorgesehen, dass in den Zwickelräumen der verseilten Bündel zusätzliche Litzenelemente angeordnet sind.To achieve this object, according to the invention it is provided that additional strand elements are arranged in the gusset spaces of the stranded bundles.

Bei einem derartigen konstruktiven Aufbau des Litzenleiters kann der elektrisch wirksame Querschnitt der verseilten Bündel und damit auch der räumliche Querschnitt dieser Bündel kleiner gewählt werden. Dies hat einen verringerten Durchmesser des Litzenleiters als Ganzes zur Folge. Hieraus resultiert beim Aufbringen der Isolierung bei gegebener Wandstärke ein geringerer Materialverbrauch. Infolge des kleineren Durchmessers des Litzenleiters und damit auch der Ader treten bei mehradrigen Leitungen kleinere Abmessungen im Seelen- und Aussendurchmesser auf, so dass sich auf für Innen- und Aussenmantel ein geringerer Materialverbrauch einstellt.With such a structural design of the stranded conductor, the electrically effective cross section of the stranded bundles and thus also the spatial cross section of these bundles can be chosen to be smaller. This results in a reduced diameter of the stranded conductor as a whole. This results in lower material consumption when applying the insulation for a given wall thickness. As a result of the smaller diameter of the stranded conductor and thus also the wire, smaller dimensions in the core and outer diameter occur in the case of multi-core cables, so that less material is used for the inner and outer sheath.

Bei den in den Zwickelräumen angeordneten Litzenelementen kann es sich um verseilte oder verwürgte Elemente handeln. Vorzugsweise kommen aber auch Strähnen in Betracht, bei denen also mehrere feine Drähte unverseilt bzw. unverwürgt zu einem Litzenelement zusammengefasst sind. Für die in den Zwickelräumen angeordneten Litzenelemente werden feine Drähte verwendet, deren Durchmesser kleiner oder höchstens gleich ist dem Durchmesserderfürdie Bündel verwendeten Drähte.The stranded elements arranged in the gusset spaces can be stranded or choked elements. However, strands are preferably also considered, in which several fine wires are combined into a stranded element without being twisted or unwrapped. Fine wires are used for the strand elements arranged in the gusset spaces, the diameter of which is smaller or at most equal to the diameter of the wires used for the bundles.

Die Durchmesserreduzierung des neuen Litzenleiters kommt vor allem dann zum Tragen, wenn drei oder vier Bündel einen Litzenleiter bilden, da sich hierbei verhältnismässig grosse Zwickelräume ergeben.The diameter reduction of the new stranded conductor is particularly important when three or four bundles form a stranded conductor, since this results in relatively large gusset spaces.

Zwei Ausführungsbeispieledes neuen Litzenleiters sind in den Figuren 1 und 2 dargestellt.Two embodiments of the new stranded conductor are shown in Figures 1 and 2.

Der Litzenleiter 1 gemäss Fig. 1 besteht aus drei verseilten Bündeln 2, in deren Zwickelräumen die zusätzlichen verseilten Litzenelemente 3 angeordnet sind. - Beim Litzenleiter 4 gemäss Fig. 2 sind in den Zwickelräumen der verseilten Bündel 2 zusätzliche Litzenelemente 5 in Form von Strähnen angeordnet.1 consists of three stranded bundles 2, in the interstices of which the additional stranded strand elements 3 are arranged. In the stranded conductor 4 according to FIG. 2, additional stranded elements 5 in the form of strands are arranged in the interstices of the stranded bundles 2.

Claims (3)

1. A stranded conductor (1) for flexible electrical cables, consisting of mutually stranded bundles (2) in each case made of a large number of fine wires, characterised in that, in a stranded conductor with an electrically effective cross-section of at least 4 mm2, additional stranding elements (3) are arranged in the interstices of the stranded bundles (2).
2. A stranded conductor as claimed in Claim 1, characterised in that the stranding elements (3) are in the form of strands (5).
3. A stranded conductor as claimed in Claim 1 or Claim 2, characterised in that the diameter of the wires which are used for the additional stranded elements (3) is smaller than the diameter of the wires used for the bundles (2).
EP84730007A 1983-02-11 1984-01-30 Stranded conductor for flexible electrical cables Expired EP0118390B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833305190 DE3305190A1 (en) 1983-02-11 1983-02-11 LADDER LADDER FOR FLEXIBLE ELECTRICAL CABLES
DE3305190 1983-02-11

Publications (2)

Publication Number Publication Date
EP0118390A1 EP0118390A1 (en) 1984-09-12
EP0118390B1 true EP0118390B1 (en) 1986-05-14

Family

ID=6190898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84730007A Expired EP0118390B1 (en) 1983-02-11 1984-01-30 Stranded conductor for flexible electrical cables

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EP (1) EP0118390B1 (en)
DE (2) DE3305190A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE493741T1 (en) 2008-04-18 2011-01-15 Nexans FLEXIBLE ELECTRICAL CONDUCTOR

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1198126A (en) * 1958-06-02 1959-12-04 Acec Winding conductor for battleship-nested transformers
FR1246654A (en) * 1960-02-02 1960-11-18 Gar Wood Ind Inc Liquid cooled welding cable
US3482034A (en) * 1967-03-07 1969-12-02 Rochester Ropes Inc Conductive tow cable

Also Published As

Publication number Publication date
DE3305190A1 (en) 1984-08-16
EP0118390A1 (en) 1984-09-12
DE3460131D1 (en) 1986-06-19

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