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How to identify the internal quality of wires and cables?

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How to identify the internal quality of wires and cables?

作者: Release Date: 2018-05-23 Author: Click:

Before identifying quality, you should first understand the dangers of using inferior cables:

Electric wire is a special product that affects the safety of life and property of millions of households and the normal operation of almost all industries. It is used in a very wide range, especially in temporary lines and home decoration indoor lines. If used, it is very large. Light wires and cables may cause short circuit and electric shock, and heavy wires and cables may cause fire and cause personal injury or death. At the end of 2009, the random inspection results of the Yunnan Provincial Administration for Industry and Commerce showed that nearly 60% of the wires and cables in the circulation area in the province were unqualified. Rough statistics from the Yunnan Fire Department indicate that more than 40% of the fires in recent years were caused by electrical faults. Black core wires and cables with "shrinking" copper cores are one of the main reasons.


In fact, there are many small places in the wire and cable trade that will make you lose money, so how can we avoid such problems?

High-quality copper cables use high-purity oxygen-free copper. The copper core is bright in color, and the surface of the poor copper wire is relatively dull.

The plastic uses high-quality native plastic, which has good bending performance. Bending the cable will not produce texture. Poor recycled plastic will show obvious texture after being bent a few times, and will break after being bent many times.

In order to ensure the roundness of the cable, fillers are added to the core of the multi-core cable, and the thickness of the sheath is relatively thick. If the cable is not round, the filler is added very little, and The sheath is thin.

Multiple strands of copper wire will be bundled during production to improve the tensile strength, roundness, electrical properties and tightness of the copper core of the copper core. However, because the bundled wire will increase the amount of copper used, many factories will omit it. After this step, the distinguishing method is to cut the core wire of the cable and see if the copper wires inside are twisted together regularly.

High-quality copper cables use high-purity oxygen-free copper. The copper core is bright in color, and the surface of the poor copper wire is relatively dull.

The plastic uses high-quality native plastic, which has good bending performance. Bending the cable will not produce texture. Poor recycled plastic will show obvious texture after being bent a few times, and will break after being bent many times.

In order to ensure the roundness of the cable, fillers are added to the core of the multi-core cable, and the thickness of the sheath is made relatively thick. If the cable you get is very round, Henan Zhengzhou Wire and Cable explains that the filler is added. Rarely, and the sheath is thin.

Multiple strands of copper wire will be bundled during production to improve the tensile strength, roundness, electrical properties and tightness of the copper core of the copper core. However, because the bundled wire will increase the amount of copper used, many factories will omit it. After this step, the distinguishing method is to cut the core wire of the cable and see if the copper wires inside are twisted together regularly.

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URL of this article: http://herzheart.com/南方双彩网/372.html

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

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