What are the differences between power cables and communication cables and control cables?
The signal cable, shielding is just one aspect, one side is not the most important, is also a power cable shielding, the key is: "the concept of twisted copper wire two insulated twisted together each other according to a certain density, radiation each wire in the transmission wave will be offset by" issued by the waves another line, so a lot of difference signal transmission, the signal cable is required, and the actual analog transmission signals is more dependent on the screen, rather than on the ground, for the use of analog signal cable specification with a single general shield on the shielding also is not explicitly required to use (except ground is intrinsically safe the)
Control and communication cable is current and voltage is relatively low, but because the signal is analog switch and even high frequency signals (such as TV video signal), vulnerable to electromagnetic interference and the signal distortion or error signal, which has a great influence on the precision, accuracy and images, sounds, or even serious accidents, so this kind of signal cable shielding requirements are high, the main is to ensure that the signal is not affected by outside interference or reduced
Power cable is the power supply for the operation of equipment. It is characterized by higher voltage and higher current. Therefore, high voltage resistance of this kind of cable is required;
Little difference between the power cable control cable for transmitting digital signals and the same cross-sectional area of the power cable instead of a power cable, but also should be used with caution control cable is the main problem of pressure instead. Transmission analog signal control cable or should use shielded cable, and power cable can not be common. Personal opinion, please paizhuan.
