Armored cables are assembled from different material conductors in metal sleeves with insulating materials and are processed into a flexible, solid assembly. Steel tape armor is used only for buried cables or ordinary pipes, general ground, tunnels, etc. Laying. They are commonly used such as xlpe power cables ,AAAC, low-voltage power cables.
Chain armored power cable is AA5000 series aluminum alloy belt. The armoring method is armoring materials interlocking, non-magnetic material, no eddy current, good heat dissipation, anti-measuring pressure, excellent anti-collision performance, internal smoothness will not cut insulation. Commonly used armored cables are mostly steel tape armored and have a low level of security. When subjected to external destructive forces, they have poor resistance, are prone to breakdown, and are heavy, have high installation costs, and are poor in corrosion resistance. Life is not long. The electrical conductivity of the conductor aluminum alloy is the most commonly used reference material for copper IACS 61. The current carrying capacity is 79% of that of copper, which is equivalent to the pure aluminum standard.The use of aluminum alloy cables instead of copper cables can reduce the weight of cables, reduce installation costs, and reduce equipment and cable wear, making installation easier. The first thing to note is the laying of aluminum alloy cables. Before laying, check that the cable is in good condition and the insulation resistance of the test cable is up to standard.
(1) Cables with large temperature variations, vibrations, and settlement joints between buildings and expansion joints may cause cable vibration and expansion and contraction. Cables should be laid in a serpentine shape.
(2) When laying cables, they shall be fixed on both sides of terminals, corners, intermediate joints, and cable branching boxes.
(3) When the cable is laid in a protective pipe or a pipe, the inner diameter of the protective pipe or pipe should not be less than 1.5 times the outer diameter of the cable. The pipe diameter should also be determined according to the actual number of turns.
(4) Routes are laid as far as possible to avoid and reduce the passage of underground pipelines, roads, railways, and communication cables.