USB cables are a large class of electrical products used to transmit electricity, transmit information and realize electromagnetic energy conversion. In the process of spot check, a large number of unqualified products were found, and these inferior products buried many hidden dangers for the normal operation of the power system. Next, we will explain what are the hazards of unqualified USB cables.
Substandard USB cables can bring the following hazards:
1. When the sheath and insulation thickness of the USB cable are not up to standard, the electrical strength of the USB cable will be seriously reduced, resulting in a shortened service life of the cable, which can lead to the cable being broken down, and the insulation (sheath) layer can not play a normal protection role, resulting in electrical short circuit and fire.
2. When the sign is unqualified, it will cause the construction personnel to identify the error, and in serious cases, it will cause electrical accidents.
3. The unqualified tensile strength and elongation of the insulation sheath before aging directly shorten the working service life of the USB cable, and in the construction or in the environment of long-term power on and high temperature, it is very easy to break the insulator, resulting in the exposed live conductor and the danger of electric shock short circuit.
4. Conductor resistance is an important indicator to evaluate whether the cable conductor material and cross-section are compatible, if the conductor resistance exceeds the standard, the loss of the current through the line will be large, and the heat of the cable will be very strong.
Related content for you to share here, unqualified USB cable products are huge, there are a variety of security risks, I hope you can pay attention to today's sharing content in the future.
