GB/T 5054.4-2024 PDF English
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Road vehicles - Multi-core connecting cables - Part 4: Test methods and requirements for coiled cable assemblies
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GB/T 5054.4-2024: Road vehicles - Multi-core connecting cables - Part 4: Test methods and requirements for coiled cable assemblies
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GB
NATIONAL STANDARD OF THE
PEOPLE'S REPUBLIC OF CHINA
ICS 43.040.10
CCS T 36
Replacing GB/T 5054.4-2008
Road vehicles - Multi-core connecting cables - Part 4.Test
methods and requirements for coiled cable assemblies
(ISO 4141-4.2009, MOD)
Issued on: OCTOBER 26, 2024
Implemented on: MAY 1, 2025
Issued by. State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword... 3
Introduction... 6
1 Scope... 7
2 Normative references... 7
3 Terms and definitions... 9
4 Preprocessing... 9
5 Bending test... 9
6 Torsion test (mechanical strength of plug and coiled cable assembly)... 13
7 Naming rules for coiled cable assemblies... 15
Appendix A (Informative) Naming rules for coiled cable assemblies... 16
Appendix B (Informative) Dimensions of the coiled cable assembly... 18
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020
Directives for standardization - Part 1.Rules for the structure and drafting of
standardizing documents.
This document is Part 4 of GB/T 5054 Road vehicles - Multi-core connecting cables.
GB/T 5054 has been published in the following parts.
-- Part 1.Test methods and requirements for basic performance sheathed cables;
-- Part 2.Test methods and requirements for high performance sheathed cables;
-- Part 3.Construction, dimensions and marking of unscreened sheathed low-
voltage cables;
-- Part 4.Test methods and requirements for coiled cable assemblies.
This document replaces GB/T 5054.4-2008 Road vehicles - Multi-core connecting
cables - Part 4.Articulation test method and requirements for coiled cable assemblies.
Compared with GB/T 5054.4-2008, in addition to structural adjustments and editorial
changes, the main technical changes are as follows.
-- The content of the chapter "Scope" has been changed (see Chapter 1; see Chapter
1 of the 2008 edition);
-- The pretreatment test requirements have been added (see Chapter 4);
-- The bending test method and requirements have been changed; the bending test
arrangement diagram and positions and the conductor breakage monitoring
connection diagram have been added (see Chapter 5; see Chapter 4 of the 2008
edition);
-- The method and requirements for torsion test have been added (see Chapter 6);
-- The naming rules for coiled cable assemblies have been added (see Chapter 7).
This document is modified in relation to ISO 4141-4.2009 Road vehicles - Multi-core
connecting cables - Part 4.Test methods and requirements for coiled cable assemblies.
This document has made the following structural adjustments compared to ISO 4141-
4.2009.
-- Chapter 4 corresponds to Chapter 3 of ISO 4141-4.2009;
Road vehicles - Multi-core connecting cables - Part 4.Test
methods and requirements for coiled cable assemblies
1 Scope
This document specifies the pretreatment of coiled cable assemblies and the naming
rules for coiled cable assemblies, and describes the bending test and torsion test
methods.
This document applies to the design, production and inspection of coiled cable
assemblies for electrical connections between towing vehicles and trailers with a
nominal voltage of 12 V and a nominal voltage of 24 V.
2 Normative references
The provisions of the following documents constitute the essential clauses of this
document through normative references in this text. Among them, for any dated
reference, only the version corresponding to that date applies to this document; for any
undated reference, the latest version (including all amendments) applies to this
document.
GB/T 5054.3-2024 Road vehicles - Multi-core connecting cables - Part 3.
Construction, dimensions and marking of unscreened sheathed low-voltage cables
(ISO 4141-3.2019, IDT)
GB/T 25086 Road vehicles - Connectors for the electrical connection of towing
and towed vehicles - 7-pole connector type 12S (supplementary) for vehicles with
12 V nominal supply voltage (GB/T 25086-2010, ISO 3732.2003, MOD)
GB/T 25088 Road vehicles - Connectors for the electrical connection of towing
and towed vehicles - 7-pole connector type 24S (supplementary) for vehicles with
24 V nominal supply voltage (GB/T 25088-2010, ISO 3731.2003, MOD)
ISO 1185 Road vehicles - Connectors for the electrical connection of towing and
towed vehicles - 7-pole connector type 24 N (normal) for vehicles with 24 V
nominal supply voltage
NOTE. GB/T 5053.1-2006 Road vehicles - Connectors for the electrical connection of towing and
towed vehicles - 7-pole connector type 24 N (normal) for vehicles with 24 V nominal supply voltage
3 Terms and definitions
There are no terms or definitions that require definition in this document.
4 Preprocessing
When testing coiled cable assemblies that meet the requirements of GB/T 5054.3-2024,
appropriate connectors shall be assembled in accordance with any of the requirements
of GB/T 25086, GB/T 25088, ISO 1185, ISO 1724, ISO 7638-1, ISO 7638-2, ISO
11446-1, ISO 11446-2, ISO 12098 or ISO 25981, and anti-torsion protection devices
shall be installed at the parts that require protection.
Before testing, the coiled cable assembly shall be pre-treated according to the following
steps.
a) Place the sample in a low-temperature box at a temperature of (-40±2) °C for
2 hours. After taking it out, stretch the coiled cable assembly to the maximum
allowable extension length specified in GB/T 5054.3-2024 within 15 seconds.
Then remove the external force and place it at a room temperature of (23±5) °C
for 120 seconds.
b) Place the sample in a high-temperature oven at (80±2) °C for 2 hours. After
taking it out, stretch the coiled cable assembly to the maximum allowable
extension length specified in GB/T 5054.3-2024 within 15 seconds, and then
remove the external force;
c) Leave at room temperature for 2 hours.
5 Bending test
5.1 Purpose
Verify the bending resistance of the coiled cable assembly (including plug) and
protective device under extreme conditions of vehicle and train turning.
5.2 Test conditions
According to the arrangement of Figure 1a), two plugs are inserted into corresponding
sockets, and at least one fixture fixing the socket is rotated horizontally by 90° in both
directions around the vertical axis A.
Figure 1 shows the test arrangement and the positions of one cycle of the bending test,
Alternatively, complete steps a)~g) of the test on only the plug and the straight cable
segment, as shown in Figure 5.
6.4 Requirements
6.4.1 After at least one cycle, the marking between the cable and the plug shall not be
displaced; after 1000 cycles, there shall be no failure in the electrical conductivity.
6.4.2 The cable shall have no cracks at the end position, the anti-torsion protection
device (if installed) shall not be displaced, and the marking between the cable and the
plug shall not be displaced.
NOTE. A higher number of cycles may be adopted through negotiation between the supplier and the
purchaser.
6.4.3 If the sample is not damaged, perform a withstand voltage test. Connect a test
circuit of 1000 V (r.m.s, 50 Hz or 60 Hz) AC or 1600 V DC between each conductor
and the other conductors connected in series. No breakdown shall occur during the 1-
minute test (see Figure 3).
7 Naming rules for coiled cable assemblies
Naming rules for coiled cable assemblies are shown in Appendix A. The main
characteristics of the coiled cable assembly should be described in the name.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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