Shielding:Braid Conductor Material:Copper Jacket:PVC Insulation Material:PVC Rated voltage:500V and below PVC:allow 70℃ Polyethylene:allow 70℃ XLPE:allow 90℃ Polyolefin material:allow 90℃,105℃,125℃,150℃ Silicone Rubber:allow 180 Fluoroplastic:allow 200℃
Computer cables are cables for electrical equipment. This cable is suitable for electronic computers and automation instruments with a rated voltage of 500V and below that require high anti-interference requirements. According to the requirements of different environments and equipment, the cable insulation can be made of polyethylene, polyvinyl chloride, crosslinked polyethylene, fluoroplastic, silicone rubber and other materials.
Polyethylene has high insulation resistance, good withstand voltage, small dielectric constant, and small effects of temperature and frequency of dielectric loss. It can not only meet the requirements of transmission performance, but also ensure the service life of the cable.
In order to reduce the mutual crosstalk and external interference between the loops, the cables need to be shielded. Shielding materials include tinned or non-tinned copper wires, copper tapes, copper-plastic composite tapes, aluminum-plastic composite tapes, etc. The metal tapes are produced by wrapping. The coverage rate should usually be not less than 15%, but specific standards have special requirements. According to TICW / 06, the coverage rate of shielding metal tape should be not less than 25%; the braided production method of metal wire should be not less than 80%. If there are higher requirements for anti-interference, the coverage rate can be not less than 90% .
The shielding requirements of the cable are adopted according to different occasions: divided shielding (only the twisted pair has shielding, each twisted pair has), general shielding (the cable has a layer of total shielding only after the core of the cable is formed), and divided shielding + Total shielding (contains both structures mentioned above). According to the higher requirements of users and use occasions, the overall shielding structure can adopt a composite shielding method, which includes two layers of shielding, which are composed of metal tape wrapped + wire braided.