1. Armored cable (copper armored cable 4 core 25mm, armored cable 4 core 16mm2, armored underground power cable twin core) means that the outermost protective layer of the cable is wrapped with steel tape or steel wire to protect the cable from external mechanical forces. destroy.
2. Cross-linked cable means that the outer insulation layer of the cable conductor is made of cross-linked polyethylene.
1. Cable armoring is mainly to enhance the resistance to mechanical damage. It can be laid directly buried and prevent rats from damaging the cable insulation.
2. As an insulating material for cables, cross-linking has a high allowable working temperature, which increases the long-term allowable working temperature from 70°C to 90°C (or higher) and the allowable short-circuit temperature from 140°C to 250°C (or higher). The cross-section of the cable has a greater carrying capacity. It has good low-temperature performance in winter and is not suitable for cracking at low temperatures.
Armored cables (multi core armored cable, 4 core 2.5 sq mm armored cable, 4 core 50mm2 armored power cable) are more expensive than cross-linked cables. The difference is larger for small specifications, 12~20%; for large cross-sections, the difference is 3~ Varies from 12%.