Technical Spec for Automotive High-Voltage Wiring Harnesses

This standard specifies general technical requirements, electrical performance, environmental performance, mechanical performance, electromagnetic shielding effectiveness, test methods, inspection rules, marking, packaging, storage, transportation and preservation of automotive high-voltage (B-level voltage) wiring harness assemblies. It applies to B-level voltage circuits in electric vehicles, excluding conductive charging connection devices. The document includes normative references to standards such as GB/T 2423 series for environmental testing, GB/T 28046 series for road vehicle equipment, and QC/T 1067 for connectors. Key terms defined include Class B voltage circuit, high voltage wiring, connector, harness assembly, open and closed crimp barrels, shielding ring, and crimp resistance. Requirements cover materials, temperature grades (T1 to T3 from -40°C to +150°C), sealing grades (S1 and S2 with IP67/IPX6 to IP6K9K/IP68), and vibration grades. Test methods and inspection rules ensure compliance with performance criteria for safety and reliability in automotive applications.