Ako identifikovať nekvalitné káble?

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. Pozorne si prezrite tlač štítkov, dávajte pozor, ak sú tam preklepy alebo rôzne odtiene tlače, slová sú rozmazané.

2. 2. Rukou otočte izolačnú vrstvu a farba a slová sa dajú ľahko vymazať, zvyčajne sú to spodné čiary.

3. 3. Poškriabajte a zoštipnite izolačnú kožu nechtom. Zvyčajne ide o spodnú čiaru, ak sa dá nakresliť alebo odštipnúť.

4. 4. Ak sa izolovaný drôt po ohnutí trikrát až štyrikrát zlomí, materiál izolačnej vrstvy je zvyčajne veľmi zlý.

5. 5. Zapáľte izolačnú vrstvu. Je to spodný drôt, ktorý sa môže po opustení otvoreného ohňa samovoľne vznietiť.

6. 6. Hliník a meď sa bežne používajú v jadre drôtu a farba spodného jadra je šedá a nie je tam žiadny kovový lesk.

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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