ISO 4141-3:2019 pdf free download – Road vehicles一Multi-core connecting cables – Part 3: Construction, dimensions and marking of unscreened sheathed low- voltage cables.
3 Terms and definitions
No terms and definitions are listed in this document.
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4 General Requirements
Multi-core sheathed connecting cables for basic performance according to this document shall comply with the requirements of ISO 4141-1.
Multi-core sheathed connecting cables for high performance according to this document shall comply with the requirements of ISO 4141-2.
5 Construction and dimensions
5.1 Single cores
5.1.1 General
During construction of the cable, the positions of the single cores within the cable construction shall
be laid up, as far as possible, in accordance with the contact positions of the connector as specified in
ISO 1185, Iso 1724, ISO 3731, ISO 3732, ISO 7638-1, 150 7638-2, ISO 11446-1, ISO 11446-2, ISO 12098 or
Iso 25981 as applicable.
NOTE Annex A provides a synopsis of the nominal cross-sections of single cores in multi-core cables specified in the International Standards cited above.
5.1.2 Additional elements
Fillers may be used to complete the cable construction. Non-metallic tapes or wrappings under the sheath or an inner sheath may be applied.
5.2 Outer sheath dimensions
5.2.1 Thickness
The minimum thickness of the sheath, measured in accordance with ISO 4141-1, shall be 1 mm.
5.2.2 Outside diameter
The outside diameter of the multi-core cable, measured in accordance with ISO 4141-1, shall be as specified in Table 1.
The cable ovality, measured in accordance with ISO 4141-1, shall not exceed 10 %.
5.3 Coil dimensions
Dimensions of the coiled connecting cables shall be as detailed in Table 2 and Figures 1 and 2.
LB = Block length or Retracted length
This is the length of the coiled part of the spiral excluding straight tails, in its unstretched state.
Lw = Working length
This is the total length of the coiled connecting cable including straight tails, when it is connected between the towing and towed vehicle without any articulation.
LEmax. = max. admitted extension length
Maximum length of the coiled connecting cable including straight tails, at which the cable still function according to the requirements.
NOTE This normally occurs when the cable is connected between the towing and towed vehicle when the vehicle is fully articulated.
6 Marking
6.1 Cores
Cores shall be identified by either of the following:
a) by the insulation colour as specified in Table 3;
b) by numerals as specified in Figure 3 and Table 3, printed in a colour contrasting with that of the core insulation.
Alternative methods may be used by agreement between manufacturer and user.
NOTE For functional allocation, see the connector standards indicated.
6.2 Sheath
Multi-core cable sheaths shall be marked, as indicated in Figure 4, with the manufacturer’s identification
and the following application characters:
— 7 core cables for 12N connectors: 12N,
— 7 core cables for 12S connectors: 12S,
— 7 core cables for 24N connectors: 24N,
— 7 core cables for 24S connectors: 24S,
— 5 core cables for antilock braking systems: ABS,
— 7 core cables for electronically controlled braking systems: EBS,
— 8 to 12 core cable for 13 pole connectors: 12-8 … 12-12,
— 8 to 15 core cable for 15 pole connectors: 24-8 … 24-15.
The marking of the sheath shown in Figure 4 shall point to that end of the cable where the cores should be arranged to match with the contacts on the plug as specified in £1.
For cables having a plug at each end (for example between the tractor and semi-trailer), it is possible to omit this marking.