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What are the skills and methods to identify the advantages and disadvantages of wires and cables?

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What are the skills and methods to identify the advantages and disadvantages of wires and cables?

作者: Release Date: 2019-12-20 Author: Click:

What are the skills and methods to identify the advantages and disadvantages of wires and cables?


The use of electrical wires in daily work environments is very important. If the quality of the electrical wires is not good, this will directly affect the stability of the circuit, which will cause a great safety hazard to the daily use of electricity. It is necessary to have a method for judging the quality of electric wires. Henan wires and cables can be checked through the following methods to avoid unnecessary impacts and hidden dangers.

河南电线电缆

Henan wire and cable manufacturers recommend looking at the surface. The plastic skin of ordinary wires is soft and smooth, and the surface should be printed with 3C certification mark, certification number, model, rated voltage, implementation standard, factory name and other items. At the same time, the writing must be clear and not easy to wipe off. The insulation of wires is not made of high-quality insulating plastic, but is made of recycled plastic. When the insulation layer is peeled off, it can be slightly peeled off, which can easily cause the insulation layer to be penetrated and leaked by the impact of current, posing a great threat to the life and property of users. The DC resistance of the conductor is not acceptable. The thickness and quality of the wire determine the load of the wire on the current. If the core material is not good and the actual cross-section is much smaller than the specified specifications, the conductor will generate heat due to excessive resistance for a long time, which will cause the danger of electrical fire.


Wire and cable manufacturers recommend tearing off the insulation. High-quality insulation materials have certain mechanical strength and flexibility, and are not easy to tear. A poor-quality wire can be torn off or pinched off by hand. Test bending. The wire head can be repeatedly bent by hand. Soft hands, good fatigue resistance, large flexibility of plastic or rubber hands, and no cracks on the wire insulator are excellent products. The insulation of fake and shoddy wires seems to be very thick. In fact, most of them are made of recycled plastic. As long as they are pressed a little harder, the extruded part will turn white, and the wire will break when bent 4-6 times.

URL of this article: http://herzheart.com/news/537.html

Keywords: wire and cable prices , Zhengzhou wire and cable , Henan wire and cable

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