A qualified industrial Ethernet cable is the result of the coordinated work of its various components. The main components include:
1. Conductor: Typically made of oxygen-free copper to ensure good conductivity and signal transmission efficiency. The conductor's thickness also affects transmission distance and performance.
2. Insulation and Twisting: Each conductor is covered with an insulation layer, and two insulated conductors are twisted together with a precise pitch. This twisted-pair structure is the basis for canceling external electromagnetic interference.
3. Shielding Layer: This is the heart of industrial cables. Common structures include:
* Aluminum Foil Shielding: Covers one or all pairs of wires, primarily resisting high-frequency interference.
* Braided Mesh Shielding: Usually made of tin-plated copper mesh, providing good low-frequency interference protection and mechanical protection.
* Combined Shielding: Such as aluminum foil plus braided mesh, providing comprehensive shielding protection.
4. Sheath: The outermost protective shell, the choice of material is crucial. Common materials include PVC and polyurethane, which have properties such as wear resistance, UV resistance, oil resistance, and flame retardancy. In situations requiring extremely high mechanical protection, an armor layer is added inside the sheath.
