Sut i adnabod ceblau israddol?

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.Edrychwch yn ofalus ar yr argraffu label, rhowch sylw os oes typos neu arlliwiau gwahanol o argraffu, mae'r geiriau'n aneglur.

2. 2.Twistiwch y croen inswleiddio â llaw, ac mae'r lliw a'r geiriau'n hawdd i'w dileu fel arfer yn llinellau israddol.

3. 3.Scratch a phinsio'r croen ynysu gydag ewin. Fel arfer mae'n llinell israddol os gellir ei thynnu neu ei phinsio i ffwrdd.

4. 4.Os bydd y wifren inswleiddio yn torri ar ôl plygu tair i bedair gwaith, mae deunydd yr haen inswleiddio fel arfer yn wael iawn.

5. 5.Ignite yr haen inswleiddio. Dyma'r wifren israddol os gall hylosgi'n ddigymell ar ôl gadael y fflam agored.

6. 6.Aluminum a chopr yn cael eu defnyddio'n gyffredin yn y craidd y wifren, ac mae'r colorof y coreis israddol llwyd ac nid oes unrhyw luster metelaidd.

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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