Test methods and standards for selecting types of automotive cables

China [CN]

The test methods for automotive cables are produced in many ways. Test whether they meet the standards in the flexibility, high and low temperature resistance, shielding performance and other characteristics of cables. So as to meet the needs of testing in the process of using the cable.

The test methods for shielding effectiveness of automotive shielding harness include line injection method and triaxial method The shielding effectiveness is usually defined according to the electrical length of the cable. The surface transfer impedance reflects the shielding effectiveness for electrical short time, and the shielding attenuation represents the shielding effectiveness for electrical long time

Of course, an automobile cable flexibility test method, based on the automobile cable flexibility test device described in any one of claims 1-5, is characterized in that it includes the following steps: sampling, selecting n sections of samples with the same length according to the outer diameter of the cable; Pulley shall be selected, and the models of the first pulley and the second pulley shall be selected according to the outer diameter of the cable; Adjust the support, and adjust the spacing between two supports according to the requirements of flexibility test under the specified bending radius; Set the pressure parameters, and set the compression speed of the press as required; Test the flexibility of the sample, horizontally mount each section of sample on the first pulley of the two supports one by one, start the press, make the second pulley of the lifting seat bend the sample, until the press shows that the pressure value does not increase, and record the maximum force value during the pressing process; Calculate the cable flexibility force value, and take the average of the maximum force value of n-section sample as the flexibility of the cable under the specified bending radius.

In addition, the test requirements of more projects are generated by different methods according to different characteristics of cables, which can obtain high-quality wires and cables to ensure the effective operation of transmission power of connecting equipment.

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