EP1501102B1 - Improved electric cable - Google Patents

Improved electric cable Download PDF

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Publication number
EP1501102B1
EP1501102B1 EP04010648A EP04010648A EP1501102B1 EP 1501102 B1 EP1501102 B1 EP 1501102B1 EP 04010648 A EP04010648 A EP 04010648A EP 04010648 A EP04010648 A EP 04010648A EP 1501102 B1 EP1501102 B1 EP 1501102B1
Authority
EP
European Patent Office
Prior art keywords
conductor
electric
cable
diameter
cross
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.)
Revoked
Application number
EP04010648A
Other languages
German (de)
French (fr)
Other versions
EP1501102A2 (en
EP1501102A3 (en
Inventor
Angelo Brambilla
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.)
Controlcavi Industria Srl
Original Assignee
Controlcavi Industria Srl
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=30012621&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1501102(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Controlcavi Industria Srl filed Critical Controlcavi Industria Srl
Priority to PL04010648T priority Critical patent/PL1501102T3/en
Publication of EP1501102A2 publication Critical patent/EP1501102A2/en
Publication of EP1501102A3 publication Critical patent/EP1501102A3/en
Application granted granted Critical
Publication of EP1501102B1 publication Critical patent/EP1501102B1/en
Anticipated expiration legal-status Critical
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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
    • H01B7/0009—Details relating to the conductive cores

Definitions

  • the present invention relates to an improved electric cable conductor.
  • electric cables conventionally comprise one or more electric conductors or wires, coated by an insulating material.
  • the conductor family according to the present invention is referred to Class 2 of the IEC (International Electrotechnical Commission) 60228 rule.
  • the conductors in this Class are defined as "rigid" and they must comprise a small minimum number of component elementary wires (see the accompanying table).
  • the stiffness or rigidity characteristic of the conductor is a consequence of the greater diameter of the few elementary individual wires thereof, which, moreover, have a diameter which increases proportionately to the overall cross-section of the conductor itself.
  • Another required rule to be met is the maximum value of the electric resistance of the conductor.
  • the above mentioned standard or specification provides, in the Class 5, a conductor for electric cables comprising a high number of small diameter elementary wires, thereby providing the conductor with flexibility properties, but with larger allowed electric resistance values.
  • the flexibility of an electric conductor will depend, for each cross-section thereof, on the diameter of the elementary wires and their numbers, so as to meet the standardizing requirements and criteria related to their assembling for providing a reduced diameter of the finished conductor.
  • the aim and objects of the present invention is to provide a flexible conductor of Class 2, by suitably assembling a comparatively high number of small elementary wires, so as to provide said flexible conductor with the desired flexibility characteristics, similar to or better than those of Class 5, but with an electric resistance as that required by Class 2 (and accordingly a larger current flow capability). This is achieved with a flexible electric multiple elementary wire cable according to claim 1.
  • the invention can be made, for each cross-section, by exploiting the most suitable combination of the diameter of the selected elementary wire, in the range shown in the table, the elementary wire number to meet the required electric resistance characteristic, and the adopted assembling technique.
  • a further characteristic shown in the table is the small diameter of the conductor of the inventive cable with respect to that of an equivalent conventional "rigid" conductor of Class 2 and, more specifically, with respect to that of a related conductor of Class 5.
  • the insulated flexible cable according to the invention has been generally indicated by the reference number 1, and comprises a conductor 2 electrically insulated at 3.
  • the conductor 2 of the insulated electric cable 1 according to the invention is constructed according to the electric and minimum wire number characteristics of Class 2 but, owing to the large number of said wires, which have a small diameter, has a flexibility equal to or better than that of the conductors of Class 5, for some cross-sections of the conductor, as shown in the enclosed Table.
  • the table shows, for conductors of red copper wires and tinned copper wires data related to parameters characterizing the inventive cable, for the disclosed cross-sections: TABLE CHARACTERISTICS OF THE INVENTIVE FLEXIBLE ELECTRIC CABLE 1 2 3 Cross Section of the conductor [mm 2 ] Maximum electric resistance [at 20°C] of the conductor Diameter of the elementary wires [mm] Maximum diameter of the conductor [mm] Red Copper [Ohm/km] Tinned Copper [Ohm/km] 6 3.08 3.11 0.30 ⁇ 0.90 3.2 10 1.83 1.84 0.30 ⁇ 0.90 3.8 16 1.15 1.16 0.30 ⁇ 0.90 4.9 25 0.727 0.734 0.30 ⁇ 0.90 6.1 35 0.524 0.529 0.30 ⁇ 0.90 7.2 50 0.387 0.391 0.30 ⁇ 0.90 8.3 70 0.268 0.270 0.30 ⁇ 0.90 10.0 95 0.193 0.195 0.30 ⁇ 0.90 11.5 120 0.153 0.154 0.30 ⁇ 0.90 13.0 150 0.124

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  • Insulated Conductors (AREA)
  • Conductive Materials (AREA)
  • Organic Insulating Materials (AREA)
  • Non-Insulated Conductors (AREA)

Abstract

An improved electric cable is made according to the electric and size characteristics of Class 2 but which, owing to a greater number of small diameter wires, has a flexibility equal to or, at least for some sections, greater than that of cables of Class 5. <IMAGE>

Description

    BACKGROUND OF THE INVENTION
  • The present invention relates to an improved electric cable conductor.
  • As is known, electric cables conventionally comprise one or more electric conductors or wires, coated by an insulating material.
  • The constructional parameters and characteristics of the mentioned conductors, according to reference rules, are divided into Classes, defining their electric, cross-section and diameter characteristics.
  • The conductor family according to the present invention is referred to Class 2 of the IEC (International Electrotechnical Commission) 60228 rule.
  • The conductors in this Class are defined as "rigid" and they must comprise a small minimum number of component elementary wires (see the accompanying table).
  • The stiffness or rigidity characteristic of the conductor is a consequence of the greater diameter of the few elementary individual wires thereof, which, moreover, have a diameter which increases proportionately to the overall cross-section of the conductor itself.
  • Another required rule to be met is the maximum value of the electric resistance of the conductor.
  • Vice versa, the above mentioned standard or specification provides, in the Class 5, a conductor for electric cables comprising a high number of small diameter elementary wires, thereby providing the conductor with flexibility properties, but with larger allowed electric resistance values.
  • It should be pointed out that a less electric resistance value would involve, the conductor cross-section being the same, a larger current capability.
  • In general, the flexibility of an electric conductor will depend, for each cross-section thereof, on the diameter of the elementary wires and their numbers, so as to meet the standardizing requirements and criteria related to their assembling for providing a reduced diameter of the finished conductor.
    • SUMMARY OF THE INVENTION
  • The aim and objects of the present invention is to provide a flexible conductor of Class 2, by suitably assembling a comparatively high number of small elementary wires, so as to provide said flexible conductor with the desired flexibility characteristics, similar to or better than those of Class 5, but with an electric resistance as that required by Class 2 (and accordingly a larger current flow capability). This is achieved with a flexible electric multiple elementary wire cable according to claim 1.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • Further characteristics and advantages of the present invention will become more apparent hereinafter from the following drawings and enclosed tables.
  • It should be apparent that the invention can be made, for each cross-section, by exploiting the most suitable combination of the diameter of the selected elementary wire, in the range shown in the table, the elementary wire number to meet the required electric resistance characteristic, and the adopted assembling technique.
  • A further characteristic shown in the table is the small diameter of the conductor of the inventive cable with respect to that of an equivalent conventional "rigid" conductor of Class 2 and, more specifically, with respect to that of a related conductor of Class 5.
    • Figure 1 shows a portion of the electric cable according to the invention, the insulation material being partially removed;
    • Figure 2 is a view similar to figure 1;
    • Figure 3 is a view of the cable as cross-sectioned along the plane III-III of figure 2.
    DESCRIPTION OF THE PREFERRED EMBODIMENT
  • With reference to the number references of the above mentioned figures, the insulated flexible cable according to the invention has been generally indicated by the reference number 1, and comprises a conductor 2 electrically insulated at 3.
  • The conductor 2 of the insulated electric cable 1 according to the invention is constructed according to the electric and minimum wire number characteristics of Class 2 but, owing to the large number of said wires, which have a small diameter, has a flexibility equal to or better than that of the conductors of Class 5, for some cross-sections of the conductor, as shown in the enclosed Table.
  • The table shows, for conductors of red copper wires and tinned copper wires data related to parameters characterizing the inventive cable, for the disclosed cross-sections: TABLE
    CHARACTERISTICS OF THE INVENTIVE FLEXIBLE ELECTRIC CABLE
    1 2 3
    Cross Section of the conductor [mm2] Maximum electric resistance [at 20°C] of the conductor Diameter of the elementary wires [mm] Maximum diameter of the conductor [mm]
    Red Copper [Ohm/km] Tinned Copper [Ohm/km]
    6 3.08 3.11 0.30 ÷ 0.90 3.2
    10 1.83 1.84 0.30 ÷ 0.90 3.8
    16 1.15 1.16 0.30 ÷ 0.90 4.9
    25 0.727 0.734 0.30 ÷ 0.90 6.1
    35 0.524 0.529 0.30 ÷ 0.90 7.2
    50 0.387 0.391 0.30 ÷ 0.90 8.3
    70 0.268 0.270 0.30 ÷ 0.90 10.0
    95 0.193 0.195 0.30 ÷ 0.90 11.5
    120 0.153 0.154 0.30 ÷ 0.90 13.0
    150 0.124 0.126 0.30 ÷ 0.90 14.3
    185 0.0991 0.100 0.30 ÷ 0.90 16.2
    240 0.0754 0.0762 0.30 ÷ 0.90 18.7
    300 0.0601 0.0607 0.30 ÷ 0.90 21.0

Claims (2)

  1. A flexible electric multiple elementary wire cable including multiple elementary wires made of red copper or tinned copper, characterized in that the conductor of said cable has the following constructional parameters, for the disclosed cross-sections: CHARACTERISTICS OF THE INVENTIVE FLEXIBLE ELECTRIC CABLE 1 2 3 Cross Section of the conductor [mm2] Maximum electric resistance [at 20°C] of the conductor Diameter of the used elementary wires [mm] Maximum diameter of the conductor [mm] Red Copper [Ohm/km] Tinned Copper [Ohm/km] 6 3.08 3.11 0.30 ÷ 0.90 3.2 10 1.83 1.84 0.30 ÷ 0.90 3.8 16 1.15 1.16 0.30 ÷ 0.90 4.9 25 0.727 0.734 0.30 ÷ 0.90 6.1 35 0.524 0.529 0.30 ÷ 0.90 7.2 50 0.387 0.391 0.30 ÷ 0.90 8.3 70 0.268 0.270 0.30 ÷ 0.90 10.0 95 0.193 0.195 0:30 ÷ 0.90 11.5 120 0.153 0.154 0.30 ÷ 0.90 13.0 150 0.124 0.126 0.30 ÷ 0.90 14.3 185 0.0991 0.100 0.30 ÷ 0.90 16.2 240 0.0754 0.0762 0.30 ÷ 0.90 18.7 300 0.0601 0.0607 0.30 ÷ 0.90 21.0
    thereby said conductor has both a flexibility equal to or better than the flexibility of electric multiple elementary wire conductors of Class 5 of the IEC 60228 standard and an electric resistance meeting the electric resistance requirements of electric multiple elementary conductors of Class 2 of said IEC 60288 standard.
  2. An electric cable, according to claim 1, characterized in that said conductor has a cross-section from 6 to 300 mm2 and a diameter from 3.2 to 21.0 mm, and each said elementary wire of said cable having a diameter from 0.30 to 0.90 mm, depending on a cross section of each said elementary wire.
EP04010648A 2003-07-23 2004-05-05 Improved electric cable Revoked EP1501102B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04010648T PL1501102T3 (en) 2003-07-23 2004-05-05 Improved electric cable

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20030349 2003-07-23
IT000349U ITMI20030349U1 (en) 2003-07-23 2003-07-23 ORIGINAL STRUCTURE OF ELECTRIC CONDUCTOR PERFECTED

Publications (3)

Publication Number Publication Date
EP1501102A2 EP1501102A2 (en) 2005-01-26
EP1501102A3 EP1501102A3 (en) 2005-05-18
EP1501102B1 true EP1501102B1 (en) 2009-09-23

Family

ID=30012621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04010648A Revoked EP1501102B1 (en) 2003-07-23 2004-05-05 Improved electric cable

Country Status (6)

Country Link
EP (1) EP1501102B1 (en)
AT (1) ATE443917T1 (en)
DE (1) DE602004023257D1 (en)
ES (1) ES2332784T3 (en)
IT (1) ITMI20030349U1 (en)
PL (1) PL1501102T3 (en)

Also Published As

Publication number Publication date
PL1501102T3 (en) 2010-01-29
ITMI20030349U1 (en) 2005-01-24
ATE443917T1 (en) 2009-10-15
EP1501102A2 (en) 2005-01-26
EP1501102A3 (en) 2005-05-18
DE602004023257D1 (en) 2009-11-05
ITMI20030349V0 (en) 2003-07-23
ES2332784T3 (en) 2010-02-12

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