What is the national standard for low voltage automotive wiring harnesses? What are the specific standards?

The standard for low-voltage automotive wiring harnesses in China usually refers to the Technical Conditions for Low-voltage Automotive Wiring Harnesses (GB/T 30512-2014), which was jointly developed by the China Automotive Technology Research Center (CATARC) and the China Society of Automotive Engineers (CSA). The standard specifies the technical requirements and test methods for low-voltage automotive wiring harnesses to ensure their reliability and safety in automotive electrical systems. Specifically, the GB/T 30512-2014 standard covers the following aspects: Definition and categorization of wiring harnesses: the definition of low-voltage automotive wiring harnesses is explained and categorized according to use and structure. Material and structural requirements: provides a detailed description of the requirements for wires, insulating materials, sheathing materials, and connectors used in wiring harnesses, including the requirements for wire cross-section, electrical properties of insulating materials, heat resistance, and oil resistance. Wiring harness assembly and labeling requirements: specifies the requirements for wiring harness assembly, including the layout of wires, the installation of connectors and so on. At the same time, the wiring harness marking, labeling and tagging requirements are also stipulated. Reliability and Safety Requirements for Wire Harnesses: covers the requirements for wire harnesses in terms of electrical performance, mechanical performance, protective performance, durability and environmental adaptability, etc., to ensure that the wire harnesses can work stably and reliably under various operating conditions. Test Methods for Wiring Harnesses: Provides methods and guidance for testing of wiring harnesses, including wire resistance test, heat resistance test, mechanical strength test, protective performance test, etc. It should be noted that the standards may be updated and revised, so in practical applications, it is recommended to consult the latest edition for accurate and up-to-date requirements and guidance.

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