Shielded computer cable is an ingeniously designed electrical product, which combines the conductive advantages of copper conductors, the sturdy protection of filler materials, the meticulous braided shielding layer, and the insulation and sheath guarantee of polyethylene to build a strong electromagnetic protection wall. This construction not only gives the cable excellent shielding efficiency, but also makes it a powerful tool against static electricity and electromagnetic interference.
1. Analysis of the characteristics of shielded computer cables
1.Voltage and temperature: The rated voltage (U0 U) of the cable reaches 300 500V, and it can operate stably in an environment with a long-term operating temperature of 70.
2.Strong environmental adaptability: in fixed laying, the ambient temperature can be as low as -40; The temperature limit for non-fixed laying is -15.
3.The art of bending: When the cable is laid, the minimum bending radius requires that the unarmored layer is less than 6 times the outer diameter of the cable, and the cable with the armored layer is not less than 12 times the outer diameter of the cable.
4.Insulation resistance guard: At a normal temperature of 20, after 1 minute of stable charging with DC 500V voltage, the insulation resistance should not be less than 2500m ·km to ensure the safety of electricity.
5.Unobstructed circuits: Smooth circuitry: Tight lines must be maintained between the twisted shields and between the twisted shields and the main shield to ensure clear signal transmission.
6.Challenges of voltage testing: The cable needs to withstand 50Hz between the core and the core, as well as between the shield, and the AC 2000V voltage test for 5 minutes without breakdown, proving its excellent electrical performance.
Second, the advantages of shielding computer cables
1.Mechanical properties: The selection of Class 5 soft conductors makes the computer cable not only flexible but also durable, which is convenient for bending and laying in various environments.
2.Shielding effect: The double-layer shielding design makes the shielding effect outstanding, providing extremely high anti-static and anti-electromagnetic interference capabilities, ensuring the pure transmission of signals.
3.Stable electrical performance: PE is used as the insulating material, so that the dielectric constant of the cable is stable, and the working capacitance is also stable, which ensures the accurate transmission of electrical signals.
4.Excellent flame retardant performance: The sheath is made of flame retardant PVC or low smoke halogen-free material, which greatly improves the flame retardant performance and increases the guarantee for safe use.
3. Application fields of shielded computer cables
Shielded computer cables are ideal for connecting electronic computers and automation, especially in applications with rated voltages of 500V and below and high requirements for anti-interference. Because the cable is soft and durable, has good shielding effect, stable electrical properties and strong flame retardant performance, it is widely used in power stations, metallurgy, minerals, petrochemical industries and other places with high requirements for electrical safety.
If you want to pursue better shielding effect, you can further improve the protection ability of the cable by adding a layer of shielding layer to the structure to form a double-layer shielded computer cable. Such a cable is undoubtedly an indispensable talisman in modern electronic equipment.