2 Ways To Identify Shielded Network Cables

Look at the internal structure of the network cable

The shielded network cable has an extra layer of metal material or aluminum foil inside the unshielded network cable. It is precisely because this layer of aluminum foil/metal material plays a shielding role that it can shield various inferences. Shielded network cables can be divided into double-shielded network cables and single-shielded network cables. A single shield has only one layer of aluminum foil, while a double shield has an additional layer of shielding metal mesh. There are only 8 network cables in the unshielded network cable:

1. Internal structure of unshielded network cable: 8 network cable insulation cover

2. Internal structure of single-shielded network cable: 8 network cables, outer layer of rubber and aluminum foil insulation

3. Internal structure of double shielded network cable: 8 network cables are insulated from the outer rubber shielded metal mesh aluminum foil layer

At the same time, there is an aluminum wire inside the shielded network cable, which is called the ground wire, but it is not inside the shielded network cable. The function of the ground wire is to introduce current into the ground, so it is also called a lightning protection wire. When unexpected situations such as leakage occur, the current can enter the ground through the ground wire. The ground wire not only prevents interference, but also improves the radiation efficiency of radio waves.

scenes to be used

Finally, the difference between shielded network cables and unshielded network cables can be distinguished by the usage scenarios of the network cables. If there is strong interference in the environment, the network transmission of the unshielded network cable will be wrong, and the signal may be intermittently or directly interrupted, especially in high-voltage application scenarios. The shielded network cable has strong anti-interference ability, and can ensure normal Internet access even in strong interference scenarios. Aluminum foil can prevent high-frequency interference such as high-voltage electricity, while metal mesh can prevent low-frequency interference, such as the common 50hz power frequency interference in life.