Armoured Electrical Wires: Key Technologies and Applications for Enhancing Cable Performance

In order to ensure the structural stability and electrical performance durability of cables, and to extend their service life, an effective method is to add an armor layer to the outer sheath of the cable. By adding an armor layer to the outer sheath, which can be divided into steel tape armor and steel wire armor, these two types of armor layers significantly enhance the cable's structural stability, compressive resistance, tensile strength, and also improve the cable's service life and anti-interference ability.

Types and Functions of Armor Layers

Armor layers are generally divided into two types: steel tape armor and steel wire armor. By using double steel tape gap wrapping technology, the cable can withstand radial pressure, which is a feature of steel tape armoured electrical wires. After cabling, the steel tape is wrapped around the cable core and a plastic sheath is extruded to provide extra protection. In the model naming of such cables, for example, control cable KVV22, plastic power cable VV22, and communication cable SYV22, the "2" in the latter part of the model indicates double steel tape armor, while the preceding number represents the PVC sheath. If a polyethylene sheath is used, "2" can be changed to "3". These cables are particularly suitable for applications that need to withstand high pressure, such as crossing roads, squares, and areas with heavy vibrations like roadside and railway side. They are also very suitable for applications like direct burial, tunnels, and pipelines.

Steel Tape Armoured Electrical Wires

Steel tape armoured electrical wires use double steel tape gap wrapping technology to withstand radial pressure, and the numbers in their model represent the sheath material. For example, control cable KVV22, plastic power cable VV22, and communication cable SYV22 all use this technology. They are particularly suitable for applications that need to withstand high pressure, such as highways, squares, and areas with heavy vibrations.

Steel Wire Armoured Electrical Wires

To enhance the cable's ability to withstand axial tension, multiple low-carbon steel wires are usually used for wrapping. This type of cable is called steel wire armoured electrical wires. Steel wire armored cables use multiple low-carbon steel wires to enhance tensile strength, employing specific pitches and designed for applications with large spans and height differences. During production, the steel wires are wrapped around the core wire at specific pitches and then sheathed. In the model naming of such cables, for example, control cable KVV32, plastic power cable VV32, and coaxial cable HOL33, a certain pattern is followed, where the number "3" generally indicates fine steel wire armor.

Comprehensive Advantages of Armoured Electrical Wires

Armoured electrical wires, as the name suggests, refer to cables with metallic armor protection layers. These cables are structurally reinforced, not only improving mechanical strength and corrosion resistance but also enhancing anti-interference performance. Common armor materials include steel tape, steel wire, aluminum tape, and aluminum tubes, among which steel tape and steel wire armor layers have good magnetic shielding effects due to their high magnetic permeability, making them particularly suitable for resisting low-frequency interference.

Application Scenarios of Armoured Electrical Wires

The mechanical protection layer of armoured electrical wires can be flexibly added to any cable structure. The method of direct burial is cost-effective and practical, providing the cable with the necessary mechanical protection, especially suitable for underground and areas requiring high resistance to external forces. This design makes armoured electrical wires particularly suitable for areas prone to mechanical damage and corrosion, adaptable to any installation method, especially direct burial in rocky areas. Simply put, armoured electrical wires are underground wires and cables with armor layers that enhance mechanical protection, extend service life, and provide a certain degree of resistance to external forces, effectively preventing accidents such as rat bites, ensuring the stability of power transmission.

In summary, due to their wide application range and excellent performance,armoured electrical wires are suitable for different installation methods, particularly for direct burial in rocky areas, enhancing resistance to external forces and mechanical protection, ensuring the stability of power transmission.