Kako prepoznati slabše kable?

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. Pozorno preglejte tiskanje nalepk, bodite pozorni, če so tipkarske napake ali drugačni odtenki tiskanja, besede so zamegljene.

2. 2. Ročno zasukajte izolacijsko kožo, barva in besede, ki jih je enostavno izbrisati, pa so običajno manjvredne črte.

3. 3. Z nohtom opraskajte in stisnite izolacijsko kožo. To je običajno spodnja črta, če jo je mogoče narisati ali odščipniti.

4. 4. Če se izolirana žica po tri- do štirikratnem upogibanju zlomi, je material izolacijske plasti običajno zelo slab.

5. 5. Vžgi izolacijsko plast. To je slabša žica, če se lahko spontano vname, ko zapusti odprti ogenj.

6. 6. Aluminij in baker se običajno uporabljata v jedru žice, barva spodnjega jedra pa je siva in ni kovinskega leska.

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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