如何辨别劣质电缆？

Wire and cable are indispensable materials for the transmission of power energy, and is widely used in economic production, once the cable fails, it will not only threaten the safe and stable operation of the power grid, but also cause significant economic losses to families and society. Now there are a lot of unqualified cables in the market to disrupt the choice of consumers with fake and shoddy, and the following will introduce the identification method of concentrated inferior cables.

1. 1.仔细查看标签印刷，注意是否有错别字或印刷深浅不一、字迹模糊。

2. 2.用手扭动绝缘皮，颜色和文字容易擦掉的通常是劣质线路。

3. 3.用指甲划、捏绝缘皮。如果能拉断或捏断，则通常是劣质线。

4. 4.如果绝缘线弯曲三到四次后就断裂，通常是绝缘层的材质很差。

5. 5.点燃绝缘层。离开明火后能自燃的为劣质电线。

6. 6、线芯常用铝、铜，劣质线芯颜色呈灰色，无金属光泽。

7. 7.Measure the outer diameter of the insulated wire and the diameter of the core, the allowable error is ±10%, and if the measured value exceeds the allowable error, it is basically an inferior insulated wire.

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