What is the harm of a substandard USB cable?
USB cable is a kind of electrical products used for transmitting electrical energy, transmitting information and converting electromagnetic energy. In the process of random inspection, 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, let's explain the dangers of a substandard USB cable.
A substandard USB cable can cause 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, leading to the shortening of the service life of the cable, resulting in the cable being broken down, and the insulation (sheath) layer cannot play a normal protective role, resulting in electrical short circuit or fire.
2.When the mark is not qualified, it will cause the construction personnel to identify the error, and serious electrical accidents will be caused.
3.The tensile strength and elongation of the insulation sheath before aging are not qualified, which directly shortens the working life of the USB cable, and it is easy to break the insulator in the construction or long-term energized and high-temperature environment, resulting in the risk of exposing the live conductor and electric short circuit.
4.Conductor resistance is an important indicator to evaluate whether the cable conductor material and section are compatible. If the conductor resistance exceeds the standard, the loss of current through the line will be very large, and the heat of the cable will be very strong. The relevant content is here to share, the number of unqualified USB cable products is huge, there are various security risks, I hope you can pay attention to today's sharing content in the future.
