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Application range of copper clad steel strand

Update:20-04-2020
Summary:

The copper-clad steel stranded wire is made of a certai […]

The copper-clad steel stranded wire is made of a certain number of copper-clad steel single wires. It is widely used in lightning protection and grounding of high-frequency coaxial cables, steel-wire communication, electrified railways, subway light rail, railways, airports, network communications and other places.  Anti-static grounding, protective grounding, grounding wires for power and petrochemical systems, etc.

Application fields: military covered conductors; ground rods in the power industry; braided shielded wires for power cables; connectors for various electronic components; reinforced conductive cores for special cables; overhead lines for power transmission and telephone lines; parallel dual-core telephone users Conductor of communication line; electrified railway, rail transit line load-bearing cable and sliding contact line; cable TV subscriber line and household line coaxial cable inner conductor material; computer local area network, access network cable, field inner cable conductor material.

Application range

Copper-clad steel stranded wire is widely used in lightning protection grounding, anti-static grounding, protective grounding, electric power and petrochemical system grounding of high-frequency coaxial cables, steel network communications, electrified railways, subway light rail, railways, airports, network communications and other places. Line etc. Compared with copper stranded wire, it has the advantages of small density, high strength, low cost, etc. Copper-clad aluminium copper is an updated product of traditional pure copper stranded wire

To identify the copper clad steel strand, you must first understand copper-clad aluminium copper  its internal structure. Because the copper layer is coated on the outside, it is difficult to identify the quality by the naked eye, but you can use special testing equipment to detect the conductivity and the thickness of the copper layer.

Measures In order to prevent electromagnetic induction, the camera power cord and signal line led along the telephone pole should be worn in the metal tube to achieve the shielding effect, and both ends of the shielded metal tube should be grounded. In order to prevent lightning waves from invading the front-end equipment along the line, appropriate lightning arresters should be installed on each line in front of the equipment, such as power lines (DC24V or 220V), video lines, signal lines and PTZ control lines.

The transmission distance of the signal line is long, the withstand voltage level is low, and it is easy to induce lightning current to damage the device. In order to transfer the lightning current from the signal transmission line to the ground, the signal overvoltage protector must respond quickly. When designing the protection of the signal transmission line, you must consider the actual In case, choose the correct lightning protection equipment according to the signal transmission rate, signal level, starting voltage and lightning flux and other parameters. Front-end equipment such as cameras should be placed within the effective protection range of the lightning receptor (lightning rod or other lightning conductor). When the camera is installed independently, in principle, in order to prevent the lightning rod and the transient high potential on the down conductor, the lightning rod is preferably 3-4 meters away from the camera. If there is difficulty, the lightning rod can also be erected on the support rod of the camera, and the down conductor can directly use the metal rod itself or select Φ 8 galvanized round steel.

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