Cable Splice 138 kV – Manufacturer

The modernization of electrical networks is driving greater demand for transmission and subtransmission systems capable of transporting large amounts of energy safely and stably.. In this context, he Cable Splice 138 kV It is a fundamental component to connect two sections of high voltage cable and maintain electrical continuity, mechanical and dielectric of the entire system.

The cables of 138 kV are used in different electrical networks, especially in underground transmission projects, substations, industrial facilities and electrical generation systems. When it is necessary to connect two lengths of cable, repair a section or adapt different sections of a line, it takes a cable splice 138 kV specifically designed to withstand the stress level and operating conditions of the project.

And XLPE cable splice 138 kV must ensure adequate distribution of the electric field, maintain the integrity of the insulation and withstand the thermal and mechanical stresses produced during normal operation and under short circuit conditions. For this reason, the quality of the design, the materials, Manufacturing and installation have a direct influence on the reliability of the electrical grid.

What is a Cable Splice? 138 kV?

He Cable Splice 138 kV is a high voltage accessory used to electrically and mechanically join two power cables. 138 kV. Its main function is to ensure that the joining area has electrical and mechanical characteristics compatible with the rest of the cable..

In a high voltage system, A splice is not simply a matter of connecting two conductors.. The cable structure includes different layers, as driver, internal semiconductor screen, XLPE insulation, external semiconductor display, metal screen and outer cover. All these layers must be carefully reconstructed in the splice area.

He cable splice 138 kV must reproduce, as far as possible, the main functions of the original cable. The conductor must maintain a low resistance electrical connection, the insulation must provide the necessary dielectric strength and the metal screen must maintain electrical continuity and the corresponding grounding system.

Besides, the splice must control the electric field around the junction area. This feature is especially important in high voltage cables because any excessive field concentration can increase the risk of partial discharge and insulation aging..

Importance of Cable Splice 138 kV

On a high voltage power line, The junction represents one of the most critical areas of the system. While a continuously manufactured cable can maintain a uniform structure along its length, splicing introduces an area where different components must be integrated again.

And high voltage cable splicing 138 kV Properly designed it must fulfill several functions:

• Maintain electrical continuity of the conductor.
• Rebuild the insulation around the connection.
• Control the distribution of the electric field.
• Maintain the continuity of the semiconductor screen.
• Ensure the continuity of the metal screen.
• Provide mechanical protection.
• Prevent moisture entry.
• Withstand the thermal conditions of the cable.
• Resist the forces produced during a short circuit.
• Maintain long service life.

The reliability of the splice has a direct relationship with the availability of the line. A failure in a high-voltage fixture can lead to power outages and costly maintenance operations..

For this reason, the projects of cable 138 kV require accessories manufactured under strict quality control procedures.

XLPE Cable Splice 138 kV

XLPE insulation is widely used in modern high voltage cables due to its good dielectric and thermal properties..

And XLPE cable splice 138 kV must be compatible with the specific characteristics of the cable insulation. The design must consider the diameter over the insulation, XLPE thickness, the structure of the screens and the dimensions of the driver.

The insulation zone of the splice must have a uniform distribution of the electric field. to get it, the design may incorporate field control components specially developed for this voltage level.

Dimensional compatibility is also essential. The cables of 138 kV can be manufactured with different conductor sections, both copper and aluminum. Besides, There may be differences in the outer diameter, insulation thickness and metal screen configuration.

For this reason, and XLPE cable splice 138 kV It should be selected according to the actual characteristics of the cable and not only according to the nominal voltage.

Structure of a Cable Splice 138 kV

The exact structure depends on the manufacturer and product design, but a high voltage splice normally integrates different elements intended to reconstruct the functions of the cable.

The first important component is the driver connection system. Its objective is to join the two conductors stably and maintain a low electrical resistance..

Below is the insulation system. This zone must provide adequate dielectric strength and maintain its properties throughout the life of the cable..

Another essential component is the electric field control system.. This system allows managing the transition between the different semiconductor layers and reducing field concentrations around the connection zone..

The metal screen must also be rebuilt correctly. Depending on cable design, a copper screen can be used, aluminum or other configuration specified by the project.

Finally, The splice must incorporate adequate external protection to guarantee mechanical resistance and protection against humidity and other environmental factors..

Electric Field Control

Control of the electric field is one of the most important aspects of a Cable Splice 138 kV.

On a high tension cable, The electric field is distributed radially through the insulation. When semiconductor screens are interrupted to make a connection, the geometry of the field changes.

If the transition is not properly designed, local concentrations of electric field may appear. These concentrations can increase the risk of partial discharges and progressively deteriorate the insulation.

For this reason, Modern junctions incorporate field control elements capable of distributing the potential gradually.

Design must take into account cable geometry, insulation thickness, the dielectric properties of the materials and the operating conditions.

In a high voltage XLPE cable splice, the control of the electric field must remain stable during the thermal cycles produced by load changes.

Cable Splicing Applications 138 kV

He Cable Splice 138 kV can be used in different types of electrical projects.

A common application is the connection of different sections of underground cables.. When a length of cable cannot be installed in a single section, it is necessary to use one or more splices to complete the line.

Can also be used during maintenance and repair work. If a section of the cable is damaged, It may be necessary to remove the affected part and reconnect the ends using a high voltage splice..

Substations are another important application. The cables of 138 kV can be used to connect different equipment within a substation or to establish connections between the substation and a transmission line.

Industrial and power generation projects may also require cable splices 138 kV, especially when facilities have large distances between generation points, transformation and connection to the network.

Splice for Underground Cable 138 kV

Underground systems have particular requirements for cable accessories.

And underground cable splice 138 kV must provide protection against moisture, mechanical stresses and environmental conditions of the installation site.

In buried facilities, the external protection of the splice is especially important. The design must consider the characteristics of the terrain, installation depth, the possible presence of water and the mechanical loads that may occur.

In some projects it is also necessary to consider additional protection systems around the splice., depending on installation conditions.

Proper splicing system selection must be made from the project design stage to ensure the fixture is compatible with the intended installation method.

Cable Splices 138 kV for Different Sections

The systems 138 kV can use different conductor cross-sections depending on the current required, transmission distance and thermal conditions.

The conductors can be made of copper or aluminum and can have different diameters..

For this reason, a manufacturer specialized in cable splices 138 kV must be able to adapt the design to different dimensions.

Among the data that normally must be checked are:

This data allows you to determine the correct dimensions and configuration of the high voltage cable splice.

Cable Splice Testing 138 kV

Testing is a fundamental part of the manufacturing process of a high voltage accessory.

Depending on applicable standards and customer specifications, and cable splice 138 kV can be subjected to different electrical tests, mechanical and quality.

The measurement of partial discharges is especially important because it allows checking the quality of the insulation system and detecting possible internal defects..

Withstand voltage tests allow evaluating the system's capacity against high electrical stresses.

Dimensional checks can also be performed, materials inspections, electrical continuity tests and tests related to the metal screen.

In certain projects, additional tests may be required to verify thermal behavior., mechanical or short circuit.

The exact values ​​and procedures must be established in accordance with the applicable standard and the technical specifications of the project.

Installing the Cable Splice 138 kV

The installation of a cable splice 138 kV It must be carried out by specialized technicians and strictly following the manufacturer's instructions..

Preparation of the cable ends is a critical stage. The different layers must be removed with suitable tools and respecting the specified dimensions.

The surface of XLPE insulation must be kept completely clean. humidity, the dust, Metal particles and other contaminants can negatively affect insulation performance.

The preparation of the semiconductor screen requires special precision because any damage or irregularity can modify the distribution of the electric field..

During assembly it is also necessary to check the conductor connections, the position of the field control elements and the reconstruction of the metal screen.

After completing the installation, Established inspections and tests must be carried out before energizing the line.

How to Choose a Cable Splice Manufacturer 138 kV

Manufacturer selection is one of the most important factors to ensure system reliability.

A professional provider of cable splices 138 kV must have experience in high voltage accessories and ability to work with XLPE cables from different manufacturers.

When evaluating a manufacturer, it is worth considering:

• Experience in projects 138 kV.
• Engineering capacity.
• Experience with XLPE cables.
• Electric field control technology.
• Custom Manufacturing Capability.
• High voltage test equipment.
• Quality control.
• Material traceability.
• Technical documentation.
• Installation support.
• Experience in international projects.

It is also advisable to check if the manufacturer can pre-analyze the cable structure and confirm the compatibility of the splice..

Dosense Cable: manufacturer of solutions for high voltage cables

Dosense Cable develops and supplies solutions for electrical cables and accessories intended for different transmission and distribution applications..

For projects that require a Cable Splice 138 kV, coordination between the cable, splicing and actual installation conditions is essential.

The technical team can analyze parameters such as conductor section and material, the diameter of the cable, XLPE insulation, metal screen configuration, operating current and short circuit requirements.

From this data it is possible to determine an appropriate splicing solution for each project..

Dosense Cable can offer solutions for XLPE cable splices 138 kV, underground high voltage cables and different conductor and shield configurations.

Experience in engineering and manufacturing allows us to develop accessories adapted to the specific needs of each client.

Cable Splicing Request 138 kV

Before selecting a Cable Splice 138 kV, It is advisable to provide the manufacturer with the complete technical data sheet of the cable..

Information may include driver type, section, diameter, insulation thickness, diameter over insulation, metallic screen configuration, rated voltage, operating current and short circuit current.

It is also important to provide information about the installation conditions, as buried installation, tunnel, channeling or other configurations.

With this data, Manufacturer can determine proper accessory configuration and check compatibility with existing cable.

And Cable Splice 138 kV Properly designed and manufactured allows maintaining the electrical and mechanical continuity of the line, improve system reliability and reduce risks during long-term operation.

For projects of cable 138 kV, XLPE cable 138 kV, high voltage cable splicing and underground electrical systems, Working with a manufacturer specialized in high voltage accessories is a fundamental decision to achieve a safe solution, stable and durable.