The comparative test was conducted according to two industry standards, YD/T 1591-2021 (technical requirements and test methods of power adapter and charging data interface of mobile communication terminals) and CQC1333-2020 (Technical specification of USB data cable for mobile communication terminals). The test contents of Usb 2.0 Cable are fire (flame retardant) performance, pressure drop performance, pressure resistance and insulation performance, interface plugging force and plugging life, bending resistance, corrosion resistance (salt spray) performance, thrust (interface side stress) performance.
Fire (flame retardant) performance is an important indicator of Usb 2.0 Cable, unexpected abnormal short circuit caused by heating, excellent flame retardant charging data line can prevent the flame to continue to burn, spread, protect consumer life and property safety. And the data cable with poor flame retardant performance, once an accident occurs, will even play the role of "combustion", or ignite household items, safety accidents caused by poor charging data cable often occur.
Fire (flame retardant) performance test uses 125mm flame to burn Usb 2.0 Cable 5 times, each time applying flame time is 15 seconds. According to the test, after the flame leaves, the open flame of the data line will be extinguished automatically within the specified time, and will not ignite the kraft paper on the bench, so the flame retardant is good. Of the 46 samples tested, 22 failed.
The bending resistance test can intuitively see the results of charging data cables of different qualities after long-term use. Before the test is finished, the outer skin of some samples appears cracking phenomenon. After the test, some samples even completely break the outer skin with all the inner core. Of the 46 samples tested, nine failed the test.
Bending resistance can experience the durability of the charging data line. High-quality products often claim that bending resistance can reach thousands or even tens of thousands of times. The number of tests used for 1000 times in the test is already a low test strength. In addition, in addition to the degree of durability, if the internal core is damaged copper exposure, it may cause short circuit phenomenon, there is a safety hazard.
