Direct-Burial Armored Multi Loose Tube Fiber Optic Cables

Direct-Burial Armored Gel-Filled Multi-Loose optic cables are engineered for direct-buried installations and are equally suitable for duct and aerial (lashed) deployments. Their robust construction and gel-filled loose tube design ensure long-term reliability in demanding environments.

Applications:

• Suitable for Underground Direct-Burial installations.
• Telecommunication Networks (FTTH, long-haul, metro networks).
• Military & Defense Communication Systems.
• Oil & Gas Pipeline Monitoring.
• Railway & Highway Communication Systems.
• Power Utility & Smart Grid Networks.
• Rural & Remote Area Broadband Deployment.
• Industrial & Mining Communication Networks.

Key Features:

• Armored Protection: Corrugated steel or aluminium armor resists mechanical stress and rodent intrusion.
• Double Jacket Design: Enhances environmental resistance and mechanical strength.
• Gel-Filled Loose Tubes: Prevent moisture ingress and isolate fibers for thermal stability.
• Wide Deployment Compatibility: Suitable for direct burial, ducts, and aerial lashing.
• Fiber Compatibility: Supports all telecommunications-grade optical fibers (Singlemode & Multimode).

Standard:

• IEC 60794-1-2 (Optical fiber cable mechanical & environmental tests).
• ITU-T G.652.D (Single-mode fiber standard)

Physical Specifications:

Core: Multi Loose tube design (12-144 fibers)

Fiber Type: Single-mode (G.652.D) or multimode (OM3/OM4/OM5)

Loose Tubes: PBT outer Dia. 2.0 to 2.4mm , gel-filled (2~48 fibers/tube).

Water Resistance: Gel-filled or dry core (water-blocking tape)

Strength Member: Central steel wire or FRP (fiber-reinforced plastic)

Inner Sheath: High-density polyethylene (HDPE)

Armor: Corrugated steel tape (CST) for crush resistance

Outer Sheath: UV-resistant PE (Polyethylene)

Mechanical & Environmental Specs:

Tensile Strength: (Long-term ≥1000 N /Short-term: ≥3000 N)

Crush Resistance: ≥2000 N/10cm

Bending Radius (Static/Dynamic): 20× / 10× cable diameter

Operating Temperature: -20°C to +70°C

Water Resistance: Passes IEC 60794-1-F5B (longitudinal blocking)

Impact Resistance: ≥4 N·m (IEC 60794-1-2)

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