Feichun AFUMEX (N)2XS(F)H 1.8/3KV: Enhanced Safety and Reliability with Longitudinal Watertight Protection for Critical Power Applications

A. Overview of Feichun AFUMEX (N)2XS(F)H 1.8/3KV

Feichun AFUMEX (N)2XS(F)H 1.8/3KV is a high-performance single-core, halogen-free power cable designed for distribution and connection applications in demanding environments. It is ideal for use in industrial facilities, power stations, and especially critical railway applications, particularly in tunnels.

This cable features a longitudinal watertight screen, which is key for ensuring long-term reliability and safety, even in the harshest of conditions.

B. Key Features and Benefits

Halogen-Free Construction:

One of the standout features of the AFUMEX (N)2XS(F)H is its halogen-free composition, which is essential for minimizing toxic smoke and corrosive gases in the event of a fire. This is especially important in confined spaces such as tunnels, where fire safety is a top priority.

Superior Fire Performance:

The cable is designed to meet stringent fire safety standards, ensuring it provides enhanced safety in the event of a fire. Whether in single or bundled configurations, the fire-resistant construction prevents flames from spreading, protecting both personnel and equipment.

Longitudinal Watertight Screen:

The longitudinal watertight screen is crucial in preventing water ingress, which can otherwise cause short circuits, equipment failures, or degraded insulation. This feature is particularly beneficial in wet environments like tunnels, where water exposure is a concern.

Robust Design:

Built to withstand the rigours of both indoor and outdoor installations, the AFUMEX (N)2XS(F)H is suitable for installations in ducts, free air, and other non-direct burial environments. Its design ensures reliability even in harsh, high-risk areas.

C. Target Audience

• Railway Infrastructure Engineers: Involved in the planning and installation of trackside cables for railway systems, particularly in tunnels where safety is paramount.

• Electrical Contractors: Who specialize in installing power cables in industrial plants, power stations, and other critical environments.

• Safety Officers: Concerned with fire safety and the protection of personnel in safety-critical environments.

• Industrial Facility Managers: Looking for reliable, fire-resistant cables that can withstand demanding conditions.

II. Technical Specifications

A. Conductor Characteristics

• Conductor Type: Bare Copper, Round Stranded (RM) for superior conductivity.

B. Insulation and Construction

• Core Insulation: Cross-linked Polyethylene (XLPE) provides excellent electrical and thermal properties, ensuring long-term reliability in power distribution.

• Screen Construction: The cable features a metal tape and wire screen, providing effective electromagnetic compatibility (EMC) shielding to prevent interference.

• Screen Material: Bare Copper, which ensures durability and efficiency.

• Inner Sheath: Made from Low Smoke Zero Halogen (LSZH) material for enhanced fire safety and reduced toxic emissions in case of fire.

• Outer Sheath: Also LSZH, offering protection against external environmental factors and contributing to overall fire safety.

• Longitudinal Watertight Screen: Prevents water from entering and traveling along the cable core, protecting the electrical components from moisture damage.

C. Electrical Ratings

• Rated Voltage U0/U (Um): 1.8/3 (3.6) kV for reliable, high-voltage performance in industrial settings.

• Maximum Conductor Temperature: 90°C for continuous operation.

• Maximum Conductor Temperature at Short Circuit: 250°C to withstand high-heat conditions.

D. Temperature Ratings

• Laying Temperature (min): -5°C to ensure the cable can be laid safely in low-temperature environments.

E. Mechanical Properties

• Permanent Tensile Strength: 50 N/mm² for durability during installation and use.

• Bending Radius: 15 x OD (where OD is the overall diameter of the cable). This generous bending radius ensures the cable remains intact during installation.

F. Environmental and Fire Performance

• Halogen-Free: Yes, as per DIN EN 50267-2-2.

• Low Smoke: Yes, in compliance with EN 61034 / IEC 61034 / EN 50268 for improved visibility during a fire.

• Flame Retardant: Yes, meeting the standards of DIN EN 60332-1-2 (single cable) and DIN EN 60332-3-24 (bunched cables).

• CPR Reaction to Fire: B2ca(s1a, d1, a1), indicating limited smoke production, minimal flaming droplets, and low acidity of evolved gases.

• UV Resistant: Yes, suitable for outdoor use.

III. Standards and Compliance

A. Importance of Standards Compliance

Ensuring that the Feichun AFUMEX (N)2XS(F)H cable meets relevant standards is crucial for safety, performance, and adherence to regulations, especially when installed in critical infrastructure applications such as tunnels, industrial facilities, and power stations. Compliance with these standards guarantees:

• Safety: Protection from electrical faults, fire hazards, and water damage.

• Performance: Consistent power delivery and electromagnetic shielding.

• Regulatory Adherence: Meeting local and international codes for fire safety, environmental performance, and electrical reliability.

B. Key Standards

• DIN EN 50575: Specifies reaction to fire requirements for cables used in construction works.

• DIN VDE 0276-604: Applies to power cables with extruded insulation for high-voltage applications.

• DIN EN 60332-1-2: Tests for vertical flame propagation on single cables.

• DIN EN 60332-3-24: Tests on bunched cables for fire safety.

• DIN EN 50267-2-2: Evaluates the acidity of gases evolved during combustion.

• EN 61034 / IEC 61034: Measures smoke density during fire conditions.

IV. Common Challenges and Solutions in Trackside, Industrial, and Power Applications

A. Fire Hazards in Tunnels and Confined Spaces

Challenge: In the event of a fire, toxic smoke and corrosive gases can spread rapidly, jeopardizing both personnel and equipment.

Solution: The halogen-free and low-smoke properties of the AFUMEX (N)2XS(F)H, coupled with its B2ca CPR classification, significantly reduce the risks associated with fire, ensuring enhanced safety in confined environments.

B. Water Ingress and Potential Cable Damage

Challenge: Cables in tunnels or industrial settings are often exposed to moisture, leading to the risk of water ingress, which can damage the cable core, insulation, or conductors.

Solution: The longitudinal watertight screen is designed to prevent water from entering the cable core, ensuring long-term reliability in wet environments.

C. Electromagnetic Interference (EMI) Issues

Challenge: EMI can disrupt sensitive electronic equipment in power stations, industrial facilities, and railway systems.

Solution: The metal tape and wire screen effectively provide electromagnetic shielding, ensuring that sensitive equipment remains protected from potential interference.

D. Installation in Ducts and Free Air

Challenge: Improper installation can lead to cable damage or reduced performance.

Solution: The robust design of the cable ensures it can be installed in ducts or free air with the proper supports and spacing, but direct burial should be avoided.

E. Cable Handling and Installation Damage

Challenge: Mishandling during installation can damage the cable, particularly the watertight screen.

Solution: Proper handling and installation practices must be followed, ensuring the 15 x OD bending radius is not exceeded and preventing damage during deployment.

V. Installation and Maintenance Best Practices

A. Careful Handling and Storage

• Store cables carefully, ensuring that they are not exposed to extreme environmental conditions or physical damage.

• Use proper cable rollers or equipment to move the cable to prevent damage during handling.

B. Correct Installation Practices

• Install cables in ducts or free air with proper support. Avoid direct burial to maintain cable integrity.

• Ensure proper spacing between cables to allow for ventilation and minimize overheating.

C. Proper Termination and Jointing

• Use approved connectors and jointing methods to maintain the watertight properties of the cable.

• Follow the manufacturer's guidelines for correct sealing and jointing procedures to maintain the cable’s performance.

D. Regular Inspections

• Regularly inspect cables for any signs of damage, particularly after installation or maintenance activities.

• Pay attention to cable joints, terminations, and the outer sheath for signs of wear or water ingress.

VI. Conclusion

A. Summary of Feichun AFUMEX (N)2XS(F)H Advantages

The Feichun AFUMEX (N)2XS(F)H 1.8/3KV cable offers unparalleled safety and reliability for critical applications, especially in railway tunnels, industrial plants, and power stations.

Its halogen-free construction, longitudinal watertight screen, and superior fire performance make it a standout solution for environments where safety and durability are paramount.

B. Key Benefits

• Superior Fire Safety: Halogen-free, low-smoke, and flame-retardant features.

• Water Protection: Longitudinal watertight screen ensures reliability in wet or damp environments.

• EMC Shielding: Effective electromagnetic compatibility for sensitive systems.

• Easy Installation: Suitable for ducts and free air installations, with clear guidelines for handling and maintaining the cable.

By choosing Feichun AFUMEX (N)2XS(F)H, you ensure enhanced safety, reliable performance, and long-term durability for your critical infrastructure needs. Whether in tunnels, industrial settings, or power stations, this cable delivers unmatched performance where it matters most.

Note: This is just part of the standard parameters of our products. Please contact our Engineer if you need more. And the information contained within this webpage is for guidance only and is subject to change without notice or liability. All dimensions and specifications are nominal and are subject to normal manufacturing tolerances. All pictures shown are for illustration purposes only. The actual product may vary. All the information is provided in good faith and is believed to be correct at the time of publication.