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As an important part of the power transmission and distribution system, the bending radius of high-voltage cables has a significant impact on the life and performance of the cable. The bending radius is the radius of the curve formed during the bending process of the cable, which determines the degree of stress and deformation to which the cable is subjected during bending. The following section describes how the bend radius affects high voltage cables and how to protect the life of the cable.

First of all, the bending radius has a direct impact on the mechanical strength and electrical performance of the cable. When the bending radius of the cable is too small, the conductor, insulation and shield inside the cable may be subject to excessive stress, resulting in a decrease in the mechanical strength of the cable, or even causing the conductor to break, the insulation to break or the shield to be damaged. At the same time, the electrical performance of the cable will also be affected, such as increased resistance, insulation breakdown and other problems may occur.

Secondly, the bending radius is also closely related to the life of the cable. When the cable is subjected to stress during bending, the material inside the cable will be deformed and fatigued, which may lead to aging and damage of the cable in the long run. Therefore, reasonable selection and control of the bending radius can extend the service life of the cable and improve the reliability of the cable system.

In order to protect the life of high voltage cables, the following are some suggestions and measures:

1. follow the recommendations of the cable manufacturer: different types and sizes of high voltage cables have different bending radius requirements, the bending radius should be selected and controlled according to the technical specifications and recommendations provided by the cable manufacturer.

2. Avoid excessive bending: During installation, wiring and maintenance, excessive bending force on the cable should be avoided and the bending radius should be kept within the specified range as far as possible. Especially in the bends and connection points, appropriate measures should be taken to reduce the bending radius of the cable.

3. Use of bending protection devices: For cable segments that require frequent bending, the use of bending protection devices, such as spring bushings, sheaths, etc., can be considered in order to minimize damage to the cable.

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