1: Different concepts
Armored cable: conductors of different materials are packed in metal sleeves with insulating materials, and processed into a bendable solid assembly.
Unarmored cable: A cable without an armored sheath, a rope-like cable made of several or groups of conductors twisted with at least two each, each group of conductors is insulated from each other and often surrounds a central Twisted, the entire exterior is covered with a highly insulating covering.
2: different uses
Armored cables: generally used in buried situations, armored cables are required for cable trench laying or direct burial.
Non-armored cables: Except for buried cases, basically non-armoured cables are used.
3: The armored cable is wound with steel tape or steel wire to protect the cable from damage and damage by external mechanical forces; it can also prevent mice and termites from biting, so as not to cause power transmission problems through the armor, and the bending of the armor The radius is large, and the armor layer can be grounded to protect the cable.
4: The outer protective layer of the armored cable is wound with steel tape or steel wire to protect the cable from damage by external mechanical forces; while the cross-linked cable refers to the outer insulating layer of the cable conductor is made of cross-linked polyethylene material. Armored XLPE cables can be used, that is, cables that are insulated with cross-linked materials and protected by armored outer layers.
5: The armored cable code is represented by + number on the ordinary cable, the first: “2” means double steel tape armor; the second: “2” means PVC sheath, such as polyethylene sheath Just change “2” to “3”. For example, YJV stands for ordinary cables, and YJV22 stands for armored cables.
6: The general market price of armored cables is about 12–15% higher than that of unarmoured cables. The cable already has good external protection, such as using a string of steel pipes for protection, or laying in a place with an excellent operating environment. From the perspective of engineering economy, ordinary cables without armor can be used.
