上海How do you distinguish a towed cable from a RVV wire cable?

From the conductor, insulation, sheath three aspects elaborated the tow chain cable and RVV wire cable difference.

Conductor: First: the size of copper wire is inconsistent; Ordinary RVV is 0.15 copper wire, and our tow chain cable uses 0.1 very fine copper wire; The conductor of the tow chain cable uses fine stranded copper wire, and the ordinary cable also uses fine copper wire. For the core wire of the same section, the diameter of the single wire in the conductor of the tow chain cable is smaller than that of the ordinary wire and cable. In order to ensure the stability of the physical and electrical properties of the conductor, the 4N conductor is generally drawn with multiple wires, and the conductor is bright and bright with good toughness. Low resistivity, the wire in the rated load for a long time without heating.

Insulation: The insulation of the tow chain cable requires strong mechanical fatigue resistance, so it has a certain hardness, adhesion resistance, high strength; Good toughness; The insulation of ordinary wire and cable is the use of non-conductive material to isolate or wrap the live body.

Sheath: The sheath of the tow chain cable generally requires tensile resistance, strong wear resistance, adhesion resistance, high toughness, and ordinary wire and cable this aspect of the requirements are lower.

What are the advantages of towed cable?

In terms of flexibility, compared with ordinary wire and cable, the tow chain cable has higher flexibility.

Although the single wire diameter of the conductor of the tow chain cable is small, in order to protect the conductor, it is necessary to choose insulation materials with mechanical fatigue resistance and certain strength. The requirements of tensile strength, bending resistance, wear resistance, adhesion resistance and high toughness also determine that the sheathing material should also have a certain hardness. Therefore, the flexibility of the tow chain cable is high flexibility, but not high flexibility.

In terms of material selection, compared with ordinary wire and cable, the tow chain cable has better material.

The conductor of the tow chain cable is made of high purity oxygen-free copper wire, which has bright color and regular shape. The cable is made of raw materials with high strength, good bending resistance and tear resistance.

In terms of service life, compared with ordinary wire cable, tow chain cable has longer life.

When the bending radius of the tow chain is small and the moving speed is quite fast, ordinary wire and cable sometimes cannot be used at all. Even in the case of large radius installation wiring and low speed and low frequency, there is a big gap in the service life of mechanical bending between the tow chain cable and ordinary wire cable.