Bending Radius and transmission performance of cables in cabling

The minimum bending radius must be monitored for Cabling Standards. If the minimum bending radius is not met, the cable may be damaged and its performance may decrease. For example, in a copper system, high return loss usually indicates that the bending radius is not properly controlled during cable cabling. In an optical fiber system, high attenuation may occur. These effects may only appear at one wavelength. However, using the correct installation technology to prevent possible damages is equally critical.

The minimum allowable bending radius of the cable usually depends on two numbers. The radius of the cable is higher than the minimum bending radius during installation. This is because the cable is being stretched during pulling and is more likely to be damaged. The installed cables are not tensile and may be less damaged. With this in mind, a higher bending radius must be specified throughout the Cabling Process compared with the end point of the distribution frame or socket.

The important thing to remember is that once the bending radius is exceeded, it is very likely that damage has occurred. The cable cannot guarantee the cable performance.

Minimum bending radius

For the minimum bending radius, see the cable diameter. It is usually expressed in multiples of D (Cable diameter. The diameter of cat6 cables is generally greater than that of cat5 cables. Therefore, the actual radius of cat6 cables is generally greater than that used in cat5 cables.

Comparison between cat5e and cat6 Cables

Unfortunately, there is no smart tool on the market to keep the bending radius of the cable at a proper diameter multiple, and there is no way to check if it has exceeded the minimum bending radius. If the space permits, you can use a ruler to measure the bending radius, but it is important for the technician to be visually familiar with the correct bending radius of the cable to identify and quickly correct any problem.

Specifications between different standards and between horizontal and trunk cables are constantly changing, making it more difficult to manage the bending radius.

The following table describes the minimum bending radius specified by the Telecommunications cabling standard. If it is different from the minimum bending radius provided by the cable manufacturer, the height shall prevail. During cable pulling and installation, the minimum bending radius of the cable is as follows:

D indicates the outer diameter of the cable.

The bending radius is four times the diameter and the bending radius is eight times the diameter.

The bending radius of the trunk cable is six times, eight times, and ten times of the diameter.

40mm bending radius for daily necessities

Bending Radius must be considered when determining cable channels and trunk specifications, especially when there is a bend or corner. Remember, even if the pipe type is sufficient to achieve direct cabling, you still need to monitor the minimum bending radius of the cable at the corner.