How to identify inferior wires and cables?

Wire and cable is a kind of electrical equipment commonly used in modern people's life. It not only has the functions of transmitting electricity, magnetism, etc., but also has the function of transmitting digital signals, etc., but there are some merchants who are profit-seeking in the market, and disregard consumers for a trace of interests. Safety, sales of some inferior wire and cable products, as a consumer in the process of buying wire and cable how to identify its quality? Today, Xiaobian hereby share with you several ways to identify the quality of wire and cable:

Identify inferior wire and cable tips:

1, look at the label printing sample, the word is not clear. It means looking at the printed words on the label and the insulation skin. If there are typos or different shades of print and the words are blurred, pay attention.

2, hand-inserted insulation, color loss, drop quality. It refers to the use of fingers to insulate the outer skin. Some inferior insulated wire sheaths are easy to fade. Especially the red line will have this problem. After the smashing, the color of the line on the finger or the word on the printed line is erased. Generally inferior quality line.

3, then use the nail to draw, twist the line, draw down, peel off the general line. It refers to the use of nails to draw and smear the outer skin. It is generally inferior to the line that can be drawn down and smashed down.

4. Repeat the bending of the insulated wire and break it three to four times. It means that the insulated wire is repeatedly bent. The poor quality wire insulation layer is generally poor in material, and the insulation layer will be broken after bending for 3 to 4 times.

5. Ignite the wire insulation with fire and leave the open flame line to self-ignite. It means igniting the insulation layer, and it is the inferior line that can spontaneously ignite after leaving the open flame.

6, the core is commonly used aluminum and copper, the color is dark and shiny. It means looking at the core color, the inferior line color is gray and has no metallic luster.

7, fine inner diameter and outer diameter, look at the weight of the skin pine. It means that if it is not determined by the above six methods, it is also possible to measure the outer diameter of the insulated wire and the diameter of the core. The allowable error is Â±10%. If the measured value exceeds the allowable error, it is basically a poor quality insulated wire.

In addition, wire and cable belong to the state mandatory production products, generally qualified products have 3C certification, in order to ensure the quality of the products they have purchased, Xiao Bian suggests that you must choose a regular brand enterprise to purchase during the purchase process, and Pay attention to its logo during the purchase process.