High-voltage cable joints, as critical connection points in power transmission networks, have their manufacturing and installation techniques directly impacting the stable operation and safety of power systems. This article aims to thoroughly analyze the production and installation process of high-voltage cable joints, covering everything from the meticulous selection of materials to the detailed execution of processes, as well as the key points and precautions for quality control. It provides a comprehensive technical reference for professionals in the power industry.

1. Careful preparation: material preparation for high voltage cable joint production

The primary task in manufacturing high-voltage cable joints is to ensure the quality and compliance of the materials used. This includes precisely selecting cable terminations, intermediate joints, line noses (coupling sleeves), grounding materials, insulating materials, and filling materials that meet design requirements. All materials must come with certificates of conformity, manuals, and other documents to verify their quality and performance. Additionally, moisture-proof treatment at the cable ends cannot be overlooked, ensuring the stability of the materials during storage and use.

2. Step by step: the production and installation process of high voltage cable joints

Precise stripping of the outer sheath: The cable should be straightened and cleaned, and then stripped of the outer sheath according to the precise length. In the process, care should be taken to avoid damage to the insulation layer.

Careful treatment of shielding layer: according to cable type and joint form, peel off and properly fix the shielding layer to lay the foundation for subsequent steps.

Thorough cleaning and insulation treatment: use special tools to remove impurities and oil on the surface of the core wire, and then carry out insulation treatment according to specifications to ensure excellent insulation performance of the joint.

Precise joint making: according to the type of joint and production instructions, the cable core wire is accurately connected with the joint to ensure that the connection is firm, flat and no crossover.

Stress control: The electric field stress at the joint is effectively dispersed by measures such as stress control pipe to improve the reliability and service life of the joint.

Sealed and moisture-proof: use filling glue, self-adhesive tape and other materials to seal the joint tightly to prevent moisture from invading.

3. Strict control: the key points of quality control in the production of high voltage cable joints

Strict material inspection: all materials are strictly inspected before production to ensure that they meet the standards and design requirements.

Standardization of process operation: strictly abide by the process and operation standards in the production process, and strengthen the quality control of key processes.

Working environment control: work in a dry and clean environment to prevent moisture and impurities from damaging the joint.

Comprehensive testing and testing: after completion, comprehensive testing and testing are carried out, such as insulation resistance test, withstand voltage test, etc., to ensure that the joint performance meets the standards.

4. Be careful: precautions for the production and installation of high voltage cable joints

Safety protection in place: necessary safety protection measures should be taken during the production and installation process, such as wearing insulating gloves, using insulating tools, etc.

Moisture and dust prevention measures: do a good job of moisture and dust prevention at the joint before installation, and keep the environment dry and clean during installation.

Efficient operation to shorten time: shorten the operation time as far as possible under the premise of ensuring quality, and reduce the risk of joint exposure.

To sum up, the production and installation of high-voltage cable joints is a complex and meticulous task that requires strict control from material preparation to process flow, quality control, and precautions. Only in this way can the quality and safety performance of high-voltage cable joints be ensured, providing a solid guarantee for the stable operation of power systems.