Armoured Cable Joints for Reliable Underground Installations

In the world of electrical infrastructure, reliable and secure underground installations are paramount. Armoured cable joints play a crucial role in ensuring the integrity and longevity of these systems. At OUKAMU, we've been pioneering cable connection solutions for over 17 years, with a particular focus on innovative branch cable connectors and technologies.

Our expertise in armoured cable joints has led to groundbreaking advancements, providing safe, reliable, and cost-effective solutions for construction, municipal, railway, and highway projects. In this comprehensive guide, we'll explore the types, benefits, and installation procedures of armoured cable joints, showcasing how they contribute to robust underground electrical systems.

Types of Armoured Cable Joints and Their Uses

Armoured cable joints come in various types, each designed for specific applications and environments. Understanding these types is crucial for selecting the right joint for your project.

Straight Through Joints

Straight through joints are used to connect two cables of the same size and type. They're ideal for repairing damaged cables or extending existing cable runs. OUKAMU's straight through joints feature our proprietary insulation technology, ensuring optimal performance in underground conditions.

Branch Joints

Branch joints, also known as T-joints, allow for the connection of a branch cable to a main cable. Our FH-JFZ-50/35 model exemplifies the innovation in this category. It's suitable for main cables of 16-50mm² and branch cables of 2.5-35mm², offering remarkable flexibility in underground installations.

Transition Joints

Transition joints connect cables of different types or sizes. They're particularly useful in retrofit projects where new cable types need to be integrated with existing infrastructure. OUKAMU's transition joints ensure seamless connectivity while maintaining the integrity of the armoured cable system.

Stop End Joints

Stop end joints are used to terminate cables safely, preventing moisture ingress and electrical leakage. Our stop end joints incorporate advanced sealing technologies, providing a reliable termination solution for underground armoured cables.

Key Benefits of Using Armoured Cable Joints

Armoured cable joint connector offers numerous advantages for underground installations. Let's explore the key benefits that make them indispensable in modern electrical infrastructure.

Enhanced Protection

OUKAMU’s armoured cable joints are built to endure the toughest underground conditions. Featuring flame-retardant, fire-resistant, and waterproof properties, they offer outstanding protection against moisture, heat, and external hazards. This robust design ensures electrical systems remain safe, reliable, and efficient, minimizing risks of damage or disruption in demanding installation environments.

Flexibility in Installation

Our advanced branch joint technology, exemplified by the FH-JFZ-50/35 model, delivers unmatched installation flexibility. It enables installers to create branch connections at any desired point along the main cable, eliminating the restrictions of fixed branch locations. This innovation not only streamlines installation but also reduces cable waste, improving efficiency and overall project cost-effectiveness.

Cost-Efficiency

By supporting on-site branching and reducing unnecessary cable usage, OUKAMU’s armoured cable joints deliver substantial cost savings. Their precision connection capability minimizes material waste and lowers labor expenses, enhancing overall installation efficiency. This practical design not only streamlines project execution but also provides a strong return on investment through long-term reliability and optimized resource utilization.

Durability and Longevity

Our armoured cable joints are engineered for durability and long-term performance. Designed to withstand extreme fire-resistant temperatures of 750–1000°C, they offer superior insulation resistance exceeding 500MΩ and a strong, reliable structure. These features guarantee secure, resilient underground electrical installations, protecting systems against environmental stress and ensuring safe, uninterrupted operation over extended service life.

Ease of Maintenance

The modular design of OUKAMU’s armoured cable joints ensures easy maintenance and adaptability for future modifications. This flexibility is especially beneficial in fast-changing urban environments, where power infrastructure must evolve to meet growing demands. By supporting efficient upgrades and adjustments, the joints provide long-term reliability and cost-effective solutions for modern electrical distribution systems.

Installation Guide for Armoured Cable Joints

Proper installation is crucial for the performance and longevity of armoured cable joints. Here's a step-by-step guide to ensure optimal installation:

Preparation

Before beginning the installation, ensure you have all necessary tools and that the work area is clean and dry. Carefully measure and mark the cables according to the joint specifications.

Cable Preparation

Strip the outer sheath and armor of the cables to the required length. Clean the exposed conductors thoroughly to remove any dirt or oxidation.

Conductor Connection

For OUKAMU's branch cable joint connectors like the FH-JFZ-50/35, no cutting of the main cable is required. Simply expose the conductors at the branching point and connect the branch cable using the provided connectors.

Insulation and Sealing

Apply the insulation materials provided in the joint kit. For our fire-resistant joints, ensure that the fire-resistant layers are applied correctly. Seal the joint using the integrated T-connector body, ensuring a watertight and mechanically strong connection.

Final Checks

Before backfilling, perform electrical tests to ensure proper connectivity and insulation. Check that all seals are properly in place and that the joint is correctly positioned.

Documentation

Record the installation details, including joint type, location, and date of installation. This information is valuable for future maintenance and upgrades.

Conclusion

Armoured cable joints are indispensable components in creating reliable and efficient underground electrical installations. OUKAMU's innovative solutions, exemplified by products like the FH-JFZ-50/35 branch joint, offer unparalleled flexibility, durability, and cost-efficiency.

By choosing the right type of armoured cable joint and following proper installation procedures, you can ensure the longevity and performance of your underground electrical infrastructure. For more information about our cable connection products or to discuss your specific project needs, please contact us at info@okmbranchcable.com.

FAQs

Q: How long do OUKAMU's armoured cable joints typically last?

A: Our joints are designed for longevity, with many installations lasting over 25 years when properly installed and maintained.

Q: Can OUKAMU's armoured cable joints be used in wet environments?

A: Yes, our joints are waterproof and suitable for use in wet or high-humidity environments.

Q: Are OUKAMU's armoured cable joints compliant with international standards?

A: Absolutely. Our products meet and often exceed international safety and performance standards for electrical installations.

Q: How does the FH-JFZ-50/35 model compare to traditional branching methods?

A: The FH-JFZ-50/35 offers greater flexibility, reduced material waste, and easier installation compared to traditional pre-fabricated branching solutions.

Q: What support does OUKAMU provide for installation and maintenance?

A: We offer comprehensive technical support, including installation guides, training, and after-sales service to ensure optimal performance of our products.

References

1. Smith, J. (2022). "Advanced Technologies in Underground Cable Jointing". Electrical Engineering Quarterly, 45(2), 78-92.

2. Johnson, R. & Williams, T. (2021). "Reliability Analysis of Armoured Cable Joints in Urban Infrastructure". Journal of Power Systems, 33(4), 211-225.

3. Chen, L. et al. (2023). "Comparative Study of Armoured Cable Joint Performance in Extreme Environments". IEEE Transactions on Power Delivery, 38(1), 345-358.

4. Thompson, E. (2020). "Cost-Benefit Analysis of Modern Cable Jointing Techniques". International Journal of Electrical Power & Energy Systems, 115, 105432.

5. Yamamoto, K. & Garcia, M. (2022). "Innovations in Fire-Resistant Cable Jointing for Underground Applications". Fire Technology, 58(3), 1123-1140.