Optical Fiber Cable For Duct Installation

DUCT OPTICAL FIBER CABLE

Description

The duct optical fiber cable with a loose tube core is designed for systems requiring a higher fiber count. The optical fibers are arranged in jelly-filled tubes with excess length, offering flexibility and protection during installation. Flame-retardant characteristics can be incorporated by using specialized materials for the outer sheath when needed.

Cable Construction

1. PE Sheath

   • Outer layer made of Polyethylene (PE), providing mechanical protection and resistance to harsh environmental conditions.

2. Laminated Aluminium Polyethylene Tape (LAP)

   • Serves as a moisture barrier, protecting the cable core from water ingress.

3. Water Blocking Tape

   • Prevents the migration of moisture along the cable.

4. Jelly Filled Interstices

   • Voids within the cable are filled with jelly to shield optical fibers from moisture.

5. Peripheral Strength Member (Aramid Yarn)

   • Adds tensile strength for duct installations and protects against mechanical damage.

6. Rip Cord

   • Simplifies cable stripping during installation.

7. Binder

   • Keeps cable elements securely bound into a compact core.

8. Filled Rod

   • Provides additional structural support for the cable core.

9. PE Strength Member Jacket

   • Additional protective coating for strength members made of polyethylene.

10. Glass Reinforced Plastic (GRP)

    • Acts as a central strength member to enhance the cable's mechanical stability.

11. Gel Filled PBTP Color-Coded Tube

    • Tubes made of Polybutylene Terephthalate (PBTP), filled with gel to protect optical fibers from moisture, and color-coded for easy identification.

12. Single Mode Color-Coded Optical Fiber

    • Single-mode optical fibers with color coding to simplify management and splicing.

13. Quad Twisted Copper Conductor (Optional)

    • Four twisted copper conductors for additional functionalities, such as power supply.

14. PE Insulation (Optional)

    • Additional Polyethylene insulation to protect optional copper conductors.

Key Features

• Loose Tube Core: Ensures optimal protection for optical fibers and flexibility during installation.

• Moisture Resistance: Incorporates jelly-filled interstices and water-blocking tape for enhanced protection against moisture.

• Flame Retardant (Optional): Specialized outer sheath materials available for applications requiring fire resistance.

• High Tensile Strength: Aramid Yarn as a peripheral strength member provides superior mechanical durability for duct installations.

References

• STEL K - 015 - 2004

• (Other specifications are available upon request)

Typical Specification

Mechanical Characteristik