TRVV and RVV are the two most common types of cable, what are the differences?
Source : Tianxing Cable | Release date : 2024-04-30
In the world of cables, TRVV and RVV are two cables that look similar, but actually have their own characteristics. Behind the subtle differences in their names are differences in function and use.
First, let's reveal their model meaning.
T, in this case, is the tow chain; V, which is an abbreviation of polyvinyl chloride (PVC), is used for both insulation and sheathing. Therefore, the full name of TRVV cable is copper core polyvinyl chloride insulated polyvinyl chloride sheathed drag chain flexible cable, often referred to as drag chain cable. The RVV cable, the full name of copper core PVC insulated PVC sheathed flexible cable, is a widely used lightweight soft sheathed wire.
Next, let's explore their material differences. The RVV cable consists of multiple copper core PVC insulated wires, which are then covered with a PVC sheath. These cables can be in an indefinite number, and the arrangement is not strictly required. In contrast, TRVV cables have more stringent regulations in terms of design and structure.
For conductors, TRVV uses a more fine, soft annealed oxygen-free copper wire, which is usually a class 6 conductor; RVV uses multi-core annealed bare copper stranding, which is generally a class 5 conductor. This difference makes TRVV conductors more suitable for moving cable applications.
In terms of insulation materials, TRVV cables use a special PVC mix, while RVV uses ordinary PVC. This difference is not only reflected in the softness and toughness, the special PVC mixture can better protect the core in the movement of the cable.
Looking at the filling material, TRVV can be filled with special tensile elements according to the use environment to improve the performance of the cable in specific occasions; RVV usually uses only ordinary cable stuffing.
The sheath material, TRVV cable sheath is made of special PVC mix, and RVV is made of ordinary PVC sheath material. This allows TRVV cables to withstand more demanding industrial environments, while RVV cables are better suited for conventional indoor environments.
Let's look at their range of applications. TRVV cable, that is, drag chain cable, because of its bending resistance, torsion resistance and other characteristics, very suitable for industrial electronic systems, automation equipment and other frequent bending occasions. The RVV cable, as an ordinary soft-sheathed cable, is more used for fixed installation in indoor environments or occasional sports.
In general, TRVV and RVV are both flexible cables, but TRVV has obvious advantages in application fields, material selection, flexibility and life. Understanding these differences, for engineers and technicians, helps to avoid selection errors, thus avoiding unnecessary losses.
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