Cable joints Manufacturers online

Cable accessories or cable joints play an essential role in the electrical connection and insulation of power cables in low, medium and high-voltage applications.

Cable joints are special accessories that are installed at the ends of cables or at their joints. They are used to connect, terminate or repair the cables while ensuring electrical integrity and mechanical and chemical resistance.

Below you will find the functionality and types of cable accessories, their use and their advantages:

How cable accessories work:

Cable accessories are designed to maintain the dielectric strength and protection of cables. They prevent short circuits and unwanted earth faults. Cable accessories protect the cable connections from physical damage, prevent the ingress of water or moisture, which extends the life of the cable connection. In some cases, they help to dissipate the heat generated by the current flow.

Types of cable accessories:

Cable accessories can be broadly divided into three categories, depending on the voltage and application:

• Low-voltage accessories (up to 1 kV): These accessories are used in households or small commercial installations.
• Medium-voltage accessories (1 kV to 36 kV): These are used in industry and by utility companies to transport energy over medium distances.
• High-voltage accessories (over 36 kV): These accessories are designed for use in high-voltage networks such as transmission lines and large substations.

The most common types of cable accessories include:

• Cable terminations: Attached to the ends of cables to provide insulation.
• Cable joints (splices): Used to connect two sections of cable together.
• Branching sets: For connecting several cables at one point.
• Heat-shrink and cold-shrink fittings: They are based on heat-shrink technologies to fit tightly around the cable and protect it from external influences.

Application:

Cable accessories are used in many areas of electrical engineering:

1. Power supply networks:
To ensure the reliability and safety of connections in distribution and transmission networks.

2. Industrial plants:
To protect connections in harsh environments such as factories or mines.

3. Building cabling:
They are important in residential and commercial buildings to ensure stable power connections.

Advantages of cable accessories:

• High-quality accessories extend the service life of cables by withstanding mechanical, chemical and thermal stresses.
• They provide safe electrical insulation and prevent breakdowns or accidents.
• Modern cable accessories, especially shrink fittings, are easy to install, which saves time and money.
• They are available in different sizes and for different voltage ranges to meet different requirements.

Cable accessories are essential components for the safe and reliable connection and termination of power cables. Their use ensures the electrical and mechanical stability of cable systems while protecting them from environmental influences. They are indispensable in various areas of application, from building technology to large power transmission projects.

Below you will find an overview of the most important criteria to look out for when purchasing cable accessories:

When buying cable accessories, there are several important factors to consider to ensure that the chosen solution is both technically and economically optimal.

• Choose cable accessories that are suitable for the specific voltage class of the system (low voltage, medium voltage or high voltage).
• Make sure that the cable accessories have the required dielectric strength to ensure safe electrical insulation.
• Check whether the cable set is compatible with the cable material (e.g. copper or aluminum cable).
• The cable set must be matched to the cross-section and diameter of the cable used to ensure a perfect fit.
• There are specific fittings for indoor or outdoor use. Cable accessories for outdoor use must offer additional protection against environmental influences such as moisture, UV radiation and temperature fluctuations.
• Specialized cable accessories with high chemical and mechanical resistance are available for use in extreme environments such as chemical industrial plants or under water.
• This is required if the cable needs to be terminated at the end. Secure insulation is crucial here.
• When connecting two cables, a sleeve is required that not only ensures a mechanical and electrical connection, but also protects against moisture.
• Heat-shrink fittings require a heat source (e.g. a heat gun) for installation, while cold-shrink fittings can be installed by mechanical compression without additional tools. Cold shrink technologies are often easier and quicker to install.
• Pay attention to the operating temperatures for which the cable accessories are designed. It must meet the thermal requirements of the system.
• If the cable or connection is subject to mechanical stress (e.g. due to movement or vibration), fittings that are correspondingly robust should be used.
• In humid environments or with underground cables, the cable accessories must be watertight to prevent corrosion and electrical problems.
• For outdoor installations, the fittings should be UV-resistant to ensure a longer service life.
• Make sure that the cable accessories comply with the relevant standards (e.g. IEC, VDE, DIN) and are certified to ensure safe and standard-compliant use.
• Choose products from reputable manufacturers. These often also offer technical support and guarantees.
• Modern cable accessories should be quick and easy to install in order to avoid installation errors and save time. Cold-shrink technologies have advantages here, as they do not require special tools.
• Make sure that the chosen cable accessories are low-maintenance and have a long service life to minimize downtime.
• It is important to find the right balance between cost and quality. Cheap cable accessories can lead to higher maintenance costs or malfunctions in the long term.
• High-quality cable accessories often have a longer service life, which can justify a higher initial investment.

When purchasing cable accessories, make sure that they are suitable for the voltage range, cable type and specific environmental conditions. Shrink technology, mechanical strength, moisture and environmental protection and certifications are also decisive factors. Simple installation and the durability of the products help to ensure long-term efficiency and safety.

Cable accessories can be obtained from various suppliers. Comprehensive information about manufacturers and suppliers of Cable accessories from all over the world can be found on Exportpages.