How to identify inferior cables?

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.Look carefully at the label printing, pay attention if there are typos or different shades of printing, the words are blurred.

2. 2.Twist the insulating skin by hand, and the color and wordsareeasy to erase are usually inferior lines.

3. 3.Scratch and pinch the insulating skin with a fingernail。Itt is usually an inferior line ifcan be drawn or pinched off.

4. 4.If the insulated wire breaks after bendingthree to four times, the material of the insulation layer is usually very poor.

5. 5.Ignite the insulation layer. It is the inferior wire ifcan spontaneously combust after leaving the open flame.

6. 6.Aluminum and copper are commonly used in the core of the wire, and the colorof the inferior coreis gray and there is no metallic luster.

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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