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GB/T 25085 is predicted to consist 10 parts under the general title Road vehicles - Automotive cables:
——Part 1: Vocabulary and design guidelines;
——Part 2: Testing methods;
——Part 3: Dimensions and requirements for 30 V a.c. or 60 V d.c. single-core copper conductor cables;
—— part 4: Dimensions and requirements for 30 V a.c. or 60 V d.c. single-core aluminium conductor cables;
——Part 5: Dimensions and requirements for 600 V a.c. or 900 V d.c. as well as 1,000 V a.c. or 1,500 V d.c. single-core copper conductor cables;
——Part 6: Dimensions and requirements for 600 V a.c. or 900 V d.c. as well as 1,000 V a.c. or 1,500 V d.c. single-core aluminium conductor cables;
——Part 7: Dimensions and requirements for 30 V a.c. or 60 V d.c. shielded and unshielded multi-core and single-core copper conductor cables with round sheath;
——Part 8: Dimensions and requirements for 30 V a.c. or 60 V d.c. shielded and unshielded multi-core and single-core aluminium conductor cables with round sheath;
——Part 9: Dimensions and requirements for 600 V a.c. or 900 V d.c. as well as 1,000 V a.c. or 1,500 V d.c. shielded and unshielded multi-core and single-core copper conductor cables with round sheath;
——Part 10: Dimensions and requirements for 600 V a.c. or 900 V d.c. as well as 1,000 V a.c. or 1,500 V d.c. shielded and unshielded multi-core and single-core aluminium conductor cables with round sheath.
This is Part 4 of GB/T 25085.
This part is developed in accordance with the rules given in GB/T 1.1-2009.
This part, by means of translation, is identical to ISO 19642-4: 2019 Road vehicles - Automotive cables - Part 4: Dimensions and requirements for 30 V a.c. and 60 V d.c. single core aluminium conductor cables.
The Chinese document consistent and corresponding with the normative international document in this part is as follows:
——GB/T 228.1-2010 Metallic materials - Tensile testing - Part 1: Method of test at room temperature (ISO 6892-1: 2009, MOD)
Editorial changes have been made in this part as follows:
——The warning in ISO 19642-4: 2019 has been moved to 4.2 of this part;
——The "×" has been replaced with "√” (see Table 3);
——The "×" has been replaced with "-” (see Table 4, Table 6, Table 7, Table 8, Table A.1 and Table A.2);
——Some notes have been added, and the reference information of relevant domestic standards has been given (see Note 2 to 4.5 and footnote a in Table 2);
——The Annex A (informative) “Product model list” has been added;
——The "Bibliography" has been modified (see Bibliography).
This part was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This part is under the jurisdiction of SAC/TC114 National Technical Committee of Auto Standardization.
Road vehicles - Automotive cables -
Part 4: Dimensions and requirements for 30 V a.c. or 60 V d.c. single-core aluminium conductor cables
1 Scope
This part of GB/T 25085 specifies the dimensions and requirements for single-core cables intended for general purpose vehicle applications where the nominal system voltage is less than or equal to 30 V a.c. or less than or equal to 60 V d.c.
This part is applicable to single-core cables for road vehicles, and also to the cores of multi-core cables.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 6892-1 Metallic materials - Tensile testing - Part1: Method of test at room temperature
ISO 19642-1 Road vehicles - Automotive cables - Part1: Vocabulary and design guidelines
ISO 19642-2: 2019 Road vehicles - Automotive cables - Part2: Test methods
EN 573-1 Aluminium and aluminium alloys - Chemical composition and form of wrought products - Part 1: Numerical designation system
EN 573-3: 2013 Aluminium and aluminium alloys - Chemical composition and form of wrought products - Part 3: Chemical composition and form of products
ASTMB231 Standard specification for concentric-lay-standard aluminium 1350 conductors
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 19642-1 apply.
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4 General requirements
4.1 General test conditions
The test shall be carried out according to Table 3 under the test conditions specified in ISO 19642-2.
If suppliers and customers agree upon modifications or changes to the methods and requirements, all the changes and modifications shall be clearly documented.
4.2 Safety concerns
The use of this part can involve hazardous materials, operations and equipment. This part does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this part to establish appropriate safety practices and determine the applicability of regulatory limitations prior to use.
4.3 Voltage rating
The cable described in this part is limited to 30 V a.c. and 60 V d.c. maximum.
4.4 Temperature classes
Temperature classes suitable for aluminium conductor cables are defined in Table 1.
Table 1 Temperature class rating
Class Equivalent class Temperature
℃
A T1 -40~85
B T2 -40~100
C T3 -40~125
D T4 -40~150
E T5 -40~175
F T6 -40~200
4.5 Conductor material
The conductors shall consist of annealed or annealed compressed aluminium or aluminium alloy strands. The specifications for the single strand wires of the conductors shall be according Table 2 and completed by material specifications. Elongation requirements shall be established by agreement between the customer and the supplier. The finished cable shall meet the resistance requirements of Table 7 for all conductors.
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The individual strands of the aluminium conductor shall be manufactured per 1000 series aluminium or other alloys according to EN 573?1. The chemical composition shall follow EN 573?3:2013, Table 1.
Notes:
1 Examples for strands are shown in Annex A.
2 Reference may also be made to GB/T 16474-2011 and GB/T 3190-2008 for the materials and chemical composition of individual strands of the aluminium conductor.
Table 2 Characteristics of individual single strand wire after annealing
Tensile strength Rma,b
MPa Reference conductor material Elongation at break Aa,b
% Conductivity k20
%IACS Sm/mm2
70 to 120 1,000 series ≥16 ≥61.2 ≥35.5
Minimum 90 Other alloys (Recommended)
≥8c,d ≥57.8d ≥33.5d
Notes:
1 For the performance of aluminium conductor material, EN-1715-2 and GB/T 3954-2014 may be referred to.
2 %IACS is the Percentage of International Annealed Copper Standard.
a The tensile strength and elongation at break shall be determined according to ISO 6892-1 and ASTM B231, or GB/T 228.1-2010
b The tensile strength and elongation at break shall be measured at clamping length of 200 mm.
c This is not applicable for compressed conductors. The tensile strength, elongation and chemical composition characteristics shall be established by agreement between the customer and the supplier.
d Additional aluminium alloys may be used. The conductivity, tensile strength, elongation characteristics and chemical composition shall be established by agreement between the customer and the supplier.
4.6 Conductors
The conductors in the finished cable shall meet the cross-sectional area (CSA) and resistance requirements of Table 7.
The maximum diameter of the conductors is standardized and presented in Table 8.
The configuration of the stranded conductor is not standardized.
Notes:
1 Existing stranding configurations for aluminium conductors are presented in Table A.1.
2 Preferred stranding configurations for aluminium conductors are presented in Table A.2.
Other stranding configurations can be used for aluminium conductors provided they meet the above requirements and are agreed between the customer and the supplier.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
4.1 General test conditions
4.2 Safety concerns
4.3 Voltage rating
4.4 Temperature classes
4.5 Conductor material
4.6 Conductors
4.7 Insulation thickness
4.8 Cable outside diameter
4.9 Representative conductor sizes for testing
4.10 Test items and requirements
5 Technical requirements
5.1 General
5.2 Dimensional tests
5.3 Electrical tests
5.4 Mechanical tests
5.5 Environmental tests
Annex A (informative) Conductor sizes, number of strands and strand diameters
Annex NA (informative) Product model list
Bibliography
