How To Distinguish The Authenticity Of The Wire And Cable Problems

1. The DC resistance of the conductor exceeds the standard. The copper wires of the wires and cables should be made of high-purity electrolytic copper, and the wires drawn out of such materials are uniform and shiny. Some production companies use recycled copper to obtain high profits, or cut corners to reduce the area of the copper wire, causing the conductor resistance of the wire to seriously exceed the standard, and the current carrying capacity of the wire is greatly reduced. The conductor is overheated during use, which affects the service life of the wire in Shenyang Cable Factory, resulting in safety Hidden dangers.

2. The mechanical properties (tensile strength, elongation at break) of the insulation and sheath materials are unqualified. The insulation and sheath materials of some wires and cables use recycled plastics, whose tensile strength and elongation at break cannot meet the application requirements. This kind of cable is easy to break during the stress process, resulting in the exposed conductors, causing short circuits and leakage discharge.

3. The high-voltage cable insulation thermal extension project is unqualified. The insulation thermal extension of individual products has a fusing phenomenon, which is easy to cause a short circuit under high temperature conditions.