SAE J1128-2025 低压主电缆 Low Voltage Primary Cable

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标准小能手 2025-12-22 150 668.1KB 23 页 20星币

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For more information on this standard, visit

https://www.sae.org/standards/content/J1128_202508/

SURFACE VEHICLE

STANDARD

J1128™

AUG2025

Issued 1975-11

Revised 2025-08

Superseding J1128 DEC2020

Low Voltage Primary Cable

RATIONALE

The SAE Cable Standards Committee has agreed to review and revise 6.8 (“Resistance to Flame Propagation”).

TABLE OF CONTENTS

1. SCOPE .......................................................................................................................................................... 3

2. REFERENCES .............................................................................................................................................. 3

2.1 Applicable Documents .................................................................................................................................. 3

2.1.1 SAE Publications ........................................................................................................................................... 3

2.1.2 ASTM Publications ........................................................................................................................................ 3

2.1.3 IEC Publications ............................................................................................................................................ 4

2.1.4 ISO Publications ............................................................................................................................................ 4

2.2 Related Publications ..................................................................................................................................... 4

2.2.1 SAE Publications ........................................................................................................................................... 4

2.2.2 ASTM Publications ........................................................................................................................................ 4

2.2.3 IEC Publications ............................................................................................................................................ 5

2.2.4 ISO Publications ............................................................................................................................................ 5

3. DEFINITIONS ............................................................................................................................................... 5

4. GENERAL ..................................................................................................................................................... 7

4.1 Cable Types .................................................................................................................................................. 7

4.2 General Test Conditions ............................................................................................................................... 8

4.3 Ovens ............................................................................................................................................................ 8

4.4 Tolerances .................................................................................................................................................... 8

4.5 Representative Conductor Sizes for Testing ................................................................................................ 8

5. GENERAL SPECIFICATIONS ...................................................................................................................... 8

5.1 Conductors .................................................................................................................................................... 9

5.2 Insulation ..................................................................................................................................................... 10

5.3 Outside Cable Diameter .............................................................................................................................. 10

5.4 Wall Thickness ............................................................................................................................................ 10

5.5 Winding ....................................................................................................................................................... 11

SAE INTERNATIONAL J1128™ AUG2025 Page 2 of 23

6. TESTS ......................................................................................................................................................... 11

6.1 Strand Coating ............................................................................................................................................ 11

6.2 Solderability ................................................................................................................................................. 11

6.3 Mechanical Properties ................................................................................................................................. 12

6.4 Long-Term Heat Aging Test (1500 Hours at the Temperature Class Rating) ............................................ 12

6.5 Dielectric ..................................................................................................................................................... 13

6.6 Insulation Faults .......................................................................................................................................... 13

6.7 Cold Bend ................................................................................................................................................... 13

6.8 Resistance to Flame Propagation ............................................................................................................... 13

6.9 Fluid Compatibility ....................................................................................................................................... 14

6.10 Resistance to Ozone ................................................................................................................................... 15

6.11 Resistance to Pinch .................................................................................................................................... 15

6.12 Resistance to Sandpaper Abrasion ............................................................................................................ 16

6.13 Cross-Linking .............................................................................................................................................. 18

6.14 Strip Force ................................................................................................................................................... 18

6.15 Resistance to Hot Water ............................................................................................................................. 19

6.16 Insulation Volume Resistivity ...................................................................................................................... 20

6.17 Temperature and Humidity Cycling ............................................................................................................. 20

7. REFERENCE INFORMATION .................................................................................................................... 21

7.1 Color Code .................................................................................................................................................. 21

7.1.1 Recommended Colors ................................................................................................................................ 21

7.1.2 Stripes ......................................................................................................................................................... 21

8. NOTES ........................................................................................................................................................ 21

8.1 Revision Indicator ........................................................................................................................................ 21

APPENDIX A FOR INFORMATION ONLY CONDUCTOR AREA METRIC UNITS ......................................................... 22

APPENDIX B RECOMMENDED COLORS ....................................................................................................................... 23

Figure 1 Voltage test setup ....................................................................................................................................... 13

Figure 2 Apparatus for flame resistance test ............................................................................................................ 14

Figure 3 Apparatus for resistance to pinch test ......................................................................................................... 16

Figure 4 Apparatus for resistance to sandpaper abrasion test ................................................................................. 17

Figure 5 Apparatus for resistance to hot water test .................................................................................................. 19

Figure 6 Procedure for temperature and humidity cycling test ................................................................................. 21

Table 1A Cable types - legacy SAE cable types .......................................................................................................... 7

Table 1B Cable types - SAE cable types ..................................................................................................................... 8

Table 2 General specifications ................................................................................................................................... 9

Table 3 Conductors .................................................................................................................................................. 10

Table 4 Outside cable diameter and wall thickness ................................................................................................. 11

Table 5 Winding test conditions ............................................................................................................................... 11

Table 6 Mechanical properties and temperature and humidity cycling, test conditions .......................................... 12

Table 7 Fluid compatibility ........................................................................................................................................ 15

Table 8 Minimum resistance to pinch ...................................................................................................................... 16

Table 9 Resistance to sandpaper abrasion, additional mass .................................................................................. 17

Table 10 Resistance to sandpaper abrasion ............................................................................................................. 18

SAE INTERNATIONAL J1128™ AUG2025 Page 3 of 23

1. SCOPE

This SAE Standard covers low voltage primary cable intended for use at a nominal system voltage of 60 VDC (25 VAC) or

less in surface vehicle electrical systems. The tests are intended to qualify cables for normal applications with limited

exposure to fluids and physical abuse.

2. REFERENCES

2.1 Applicable Documents

The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the

latest issue of SAE publications shall apply.

2.1.1 SAE Publications

Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (U.S. and

Canada only) or +1 724-776-4970 (Outside U.S. and Canada), www.sae.org.

SAE J311 Fluid for Passenger Car Type Automatic Transmissions

EA-1128 Wire Color Charts

Tomsic, J. (2000). Dictionary of materials and testing (2nd ed.). SAE International.

2.1.2 ASTM Publications

Available from ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,

Tel: 610-832-9500, www.astm.org.

ASTM B33 Standard Specification for Tinned Soft or Annealed Copper Wire

ASTM B263 Method for Determination of Cross-Sectional Area of Standard Conductors

ASTM B298 Standard Specification for Silver-Coated Soft or Annealed Copper Wire

ASTM B354 Definitions of Terms Relating to Uninsulated Metallic Electrical Conductors

ASTM B355 Standard Specification for Nickel-Coated Soft or Annealed Copper Wire

ASTM D412 Standard Test Methods for Vulcanized Rubber and Thermoplastic Rubbers and Thermoplastic Elastomers

- Tension

ASTM D471 Standard Test Method for Rubber Property - Effect of Liquids

ASTM D573 Standard Test Method for Rubber - Deterioration in an Air Oven

ASTM D833 Standard Terminology Relating to Plastics

ASTM D5374 Standard Test Methods for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation

ASTM D5423 Standard Specification for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation

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摘要：

SAE J1128-2025 是汽车工程师协会（SAE）发布的最新版低压主电缆标准规范，专门针对汽车及重型车辆电气系统中使用的低压主电缆（Low Voltage Primary Cable）提出技术要求。该标准涵盖了电缆的导体结构、绝缘材料、耐温等级、电压等级以及机械性能等关键参数，适用于12V至60V直流系统的布线需求。相较于旧版，2025版更新了材料环保要求（如RoHS和REACH合规）、提升了耐热老化与阻燃性能，并增加了对小型化、轻量化电缆设计的指导。无论是OEM厂商、线束供应商还是售后维

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