Como identificar os cables inferiores?

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.Mire atentamente a impresión da etiqueta, preste atención se hai erros tipográficos ou diferentes matices de impresión, as palabras están borrosas.

2. 2. Retorce a pel illante coa man, e a cor e as palabras son fáciles de borrar normalmente son liñas inferiores.

3. 3.Raiar e beliscar a pel illante cunha uña。Adoita ser unha liña inferior se se pode debuxar ou beliscar.

4. 4.Se o fío illado se rompe despois de dobrarse de tres a catro veces, o material da capa de illamento adoita ser moi pobre.

5. 5.Acender a capa de illamento. É o fío inferior se pode arder espontaneamente despois de deixar a chama aberta.

6. 6.O aluminio e o cobre úsanse habitualmente no núcleo do fío, e a cor do núcleo inferior é gris e non hai brillo metálico.

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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