福建Whats the difference between flexible cable and sheathed cable?

Flexible cable generally refers to the cable with multi-strand soft conductor structure. The high flexible cable used in the towing chain movement system is also called the towing chain cable.

Sheathed wire is a common household wire, the conductor is the material polyvinyl chloride PVC plastic wrapped called sheathed wire, sheathed wire is divided into RVV soft sheathed wire and BVV hard sheathed wire.

BVV hard sheathed wire adopts single-strand conductor structure, RVV soft sheathed wire adopts multi-strand conductor structure, RVV soft sheathed wire and flexible cable conductor structure is similar.

The difference between flexible cable and sheathed cable

In terms of structure, material, appearance and function, what are the main differences between flexible cable and soft sheathed line?

1. In terms of insulation material, flexible cable insulation generally uses special modified elastomer Ding Qing/automotive material /TPE/PE and other materials. Different insulation materials are selected according to different use environments to ensure cable softness and improve the performance of cable in specific use environments to a greater extent; The insulation material of ordinary soft sheathed wire is usually ordinary PVC material.

2. In terms of cable forming mode, flexible cables adopt short-pitch layering when forming cables. In particular, high-flexible cables used for towing chains adopt a variety of cable forming modes, such as anti-torsional structure layering, grouping gap filling, twisted + double twisting, etc., to ensure that the cable is round and at the same time, the cable core is compact and not easy to loose. The general soft sheathed cable has a large cable intercept and the core is easy to loosen.

3, function, ordinary soft sheath line is suitable for fixed installation; Flexible cable can be used for fixed laying and mobile use, high flexible cable is more suitable for motion cable.

4, appearance, the two are similar, feel similar, sometimes ordinary soft sheath line than flexible cable feel soft. This is one of the main reasons why common soft sheathed wires are used as high flexibility cables for towing chains.

Non-professionals may have such a misconception - high flexibility, mobile use of cable must be very soft. In fact, the so-called high flexibility of the tow chain cable does not mean the softness of the cable, but the wear resistance and bending resistance life, that is, the high flexibility of the cable.

Although the conductor of flexible cable and sheathed wire are made of multi-strand copper wire, the single wire of flexible cable is thinner and of better quality. Common soft sheathed cables use a small amount of padding and have a loose structure, while flexible cables have significantly more padding than ordinary sheathed cables. The cable is more rounded and tightly wrapped, which is part of the reason why flexible cables are slightly stiffer.

Understanding the difference between flexible cables and sheathed cables can reduce cable selection errors and further improve the use efficiency of equipment.