INFRALAN U-DQ(ZN)BH OS2 8E (1x8) single-fiber loose-tube cable LSZH black G657A1 5.8mm 2000N

INFRALAN U-DQ(ZN)BH OS2 8E (1x8) is a single-fiber loose-tube optical cable designed for long-distance single-mode transmission. The cable contains eight OS2 fibres with G.657.A1 bend-insensitive characteristics housed in a single loose tube. A flame-retardant LSZH (low smoke zero halogen) outer jacket in black and a compact 5.8 mm diameter make this cable suitable for indoor/outdoor duct and backbone installations where reduced smoke and halogen-free behavior is required. The cable is rated for 2000 N tensile strength and includes mechanical reinforcement suitable for standard deployment practices.

Advantages

The INFRALAN U-DQ(ZN)BH OS2 8E combines bend-insensitive G.657.A1 fibres with a loose-tube design to offer consistent single-mode performance and improved handling in constrained routing paths. Its LSZH jacket reduces the emission of toxic and corrosive gases in case of fire, while the compact 5.8 mm diameter and 2000 N tensile rating simplify installation in ducts and vertical backbone routes. The black outer sheath provides UV resistance for outdoor duct applications and a discreet appearance in visible runs.

Suitable for

• Long-distance single-mode transmission networks
• Indoor/outdoor duct and conduit installations
• Building backbone cabling and riser routes
• Environments requiring low-smoke, halogen-free sheathing
• Installations needing bend-insensitive fibre for tight bends

When it may not be suitable

This cable is optimized for single-mode OS2 applications; it is not intended for multimode links or short-reach multimode networks. It is a single loose-tube design with eight fibres — projects that require a very high fibre count or multiple buffer tubes will need a different cable type. For direct aerial spans without additional support or for installations subjected to extreme mechanical strain beyond 2000 N, consider specialised aerial or armoured cables.

Key specifications

• Fibre type: single-mode OS2, G.657.A1 (bend-insensitive)
• Fibre count: 8 fibres in one loose tube
• Cable diameter: 5.8 mm
• Outer sheath: LSZH (low smoke zero halogen), black
• Tensile strength: 2000 N
• Construction: single loose-tube with mechanical reinforcement
• Application: indoor/outdoor duct, backbone and riser installations

How to use

Prepare ducts or conduits and ensure routing pathways meet bend-radius requirements for G.657.A1 fibres. Pull the cable using appropriate pulling grips and keep applied tension within the 2000 N limit; avoid shock loads. Maintain the minimum bend radius specified by the fibre standard during routing and terminations. Strip the LSZH jacket and loose tube carefully for splicing or connectorisation, and perform standard single-mode fusion splicing or connector termination following manufacturer and industry procedures. Use suitable sealing and duct-entry glands where outdoor-to-indoor transitions occur.

What to consider before purchase

• Confirm that single-mode OS2 G.657.A1 fibres meet the link budget and bending requirements of your project
• Verify that an 8-fibre single tube configuration matches your required fibre count and future expansion plans
• Ensure the 2000 N tensile rating and 5.8 mm diameter are compatible with planned installation methods and duct dimensions
• Assess environmental conditions to confirm LSZH and black sheath suitability (indoor safety, UV exposure in ducts)

Usage recommendations

Use standard fusion splicing for lowest insertion loss and secure outdoor-to-indoor transitions with appropriate sealing. Maintain manufacturer-recommended bend radii for G.657.A1 fibres and do not exceed the 2000 N tensile limit during pulling. For installations requiring rodent protection, direct burial, or aerial deployment, select a cable with additional armouring or dedicated aerial features.