Copper-clad aluminum net wire refers to wires and cables with aluminum core wire instead of copper as the main body of the cable and coated with a certain proportion of copper layer.
Pure copper wire is copper with a high content of copper, because the color is purple copper, also known as copper, the main component of copper and silver, the content of 99.7 ~ 99.95%; Used for making conductive equipment, high - grade copper alloy, copper - based alloy.
Measured at 20℃ their resistance (called the resistivity of the material) and compared, silver resistivity is small, followed by copper, aluminum. The resistivity of copper-clad aluminum conductors is more than 1.5 times that of copper conductors, and there are some differences in resistivity with temperature. Because the resistance of copper-clad aluminum material is relatively large, the transmission speed of copper-clad aluminum wire is slower than that of copper wire.
Generally normal
Network Cable manufacturers are using pure copper or oxygen-free copper to make the network cable. Because the cost of net wire made of pure copper is higher than that of copper clad aluminum net wire, so some manufacturers use copper clad aluminum net wire to pretend to be pure copper net wire.
According to the following aspects you can judge whether the quality of the finished cable is good or not:
1, conductor, the general network cable will have pure copper as conductor, good network cable will use 4N oxygen free pure copper as conductor (purity 99.99%), and the relatively poor network cable will have impurity copper, copper coated aluminum, copper coated iron as conductor. 4N oxygen free copper oxidation resistance, data transmission speed is fast, is the current network cable good conductor, of course, the price is more expensive, general network conductor easy oxidation, slow Internet speed, easy to lose data. The transmission quality of the copper core cable is good. The quality of the copper core determines the transmission performance of the cable. The higher the purity and the thicker the copper, the higher the conductivity and the smaller the signal transmission attenuation. Wire diameter thick, shiny, soft and toughness of copper wire is good copper wire, the core of the net wire is copper clad steel, copper clad aluminum and so on.
2, the skin, good cable insulation layer is made of environmentally friendly insulation PVC or PE, has the characteristics of bending and not discoloration, and can not be burned, the general insulator can not only burn itself, but also play the role of combustion, once the fire becomes an accomplice, emit a lot of toxic gas.
3, transmission effect, high quality network cable can exceed the national standard, to achieve high-speed, long-distance transmission; Ordinary cable quality is not up to standard does not say, perhaps pull a 20 meters long no signal, signal attenuation is very fast... I hope to help you! Generally speaking, the market access line is very chaotic, a few cents a meter, a dollar a meter have, not standard at all.
4. Jacket
Good net wire is made of new environment-friendly plastic, safe and flame retardant, flexible and resistant to bending and aging; And the poor quality of the wire is often recycled material, easy to break, the color is dim.
5. Twsit pitch
The so-called skew distance of the network cable is actually the length of the network cable newrao section, usually people use the skew distance to represent the tightness of each pair of wires intertwined with each other. The tight and accurate control of the skew distance can effectively cancel the signal crosstalk between the wire pairs, and better resist the electromagnetic interference from the outside world, and guarantee the stability of the signal transmission.
6.RJ45 connector
Good crystal head often uses 24K gold-plated contacts, crystal head contacts gold-plated thicker and more uniform, the more resistant to plug, acid and alkali corrosion, the longer the contact life, the better the transmission stability. And the use of separate jacket design, not only fire, and press repeatedly bend, but also to maintain toughness, not easy to break.
Kingwire, focusing on the production of network cable for more than 10 years, CAT5E, CAT6, CAT7, CAT8 types of network cable, welcome to contact us anytime.
July 13, 2021
