GJYXFCH 2FRP+1 Steel Wire Messenger Outdoor FTTH Drop Cable

GJYXFCH Steel Messenger Wire FRP Strength Member Aerial Self-Supporting Mini FIG8 FTTH Drop Fiber Optic Cable

Overview:

GJYXFCH is an aerial self-supporting mini figure-8 (FIG8) FTTH drop fiber optic cable featuring a steel messenger wire and FRP (Fiberglass Reinforced Plastic) strength members. It is specifically designed for the "last-mile" fiber-to-the-home (FTTH) deployment, enabling direct fiber connection from distribution points to end-user premises. Its integrated self-supporting structure, easy-stripping design, and excellent environmental adaptability make it a core product in FTTH access networks.

• Structural Shape: Adopts a mini "figure-8" (FIG8) cross-section. The upper groove houses a steel messenger wire (for load-bearing and tension resistance), while the lower groove contains the fiber unit (with FRP strength members and optical fibers).

• Core Configuration: Typically supports 1–4 cores of single-mode optical fibers, compatible with mainstream standards such as G.657A1, G.657A2, and G.652D. Fiber coloring complies with TIA/EIA-598 or IEC 60304 standards (e.g., blue, orange, green, brown for core identification).

• Outer Sheath: Made of LSZH (Low Smoke Zero Halogen) material; optional UV (ultraviolet) resistant coating is available for long-term outdoor exposure scenarios.

• Dimensions: Compact size with an approximate outer diameter of 5.0×2.0 mm, suitable for narrow-space installation (e.g., along building exteriors, eaves).

Typical Structure:

1. Fiber Core : 1–4 core single-mode fibers (common types: G.657.A2/A1 or G.652.D).

• G.657.A2: Excellent bend resistance (minimum bend radius: 7.5 mm static / 15 mm dynamic), ideal for tight routing in indoor/outdoor transitions.

• G.652.D: Universal single-mode fiber, compatible with long-haul and access networks.

  
  

2. Strength Members: Two parallel FRP rods (diameter: ~0.5 mm each) placed symmetrically on both sides of the fiber core, providing radial compression resistance and anti-bending support.

   
   

3. Steel Messenger Wire: An independent high-tensile steel wire integrated into one "lobe" of the figure-8 structure, bearing the main tension during aerial installation (e.g., spanning between utility poles). Diameter: ~1.0 mm; made of galvanized or phosphated steel wire, eliminating the need for additional support wires.

   
   

4. Sheath: Black LSZH outer sheath, covering the fiber core, strength members, and connecting to the messenger wire. It provides UV resistance, water resistance, and environmental protection.

Note: the messenger wire also can be designed as Stranded Steel Wires according to customer's requirements.

Features:

1. Self-Supporting Aerial Capability: The integrated steel messenger wire eliminates the need for additional suspension cables, reducing installation complexity and cost for outdoor aerial spans.

2. Superior Bend Performance: G.657.A2 fiber supports small-radius bending, enabling flexible routing around corners, walls, or tight spaces during last-mile  (home entry).

3. Easy Installation & Termination: The butterfly-shaped structure has a pre-designed groove for quick longitudinal stripping, allowing fast termination with fusion splicers or mechanical splice-on connectors (SOCs).

4. Environmental & Safety Compliance: LSZH sheath produces low smoke and zero toxic halogens when burned, making it safe for indoor/outdoor transition areas (e.g., building shafts, basements).

5. Broad Standard Compatibility: Meets international and industry standards, including YD/T 1997-2009 (China), IEC 60794 (International Electrotechnical Commission), and GR-409/ICEA-596 (North America), ensuring interoperability with global FTTH systems.

6. Wide Temperature Range: Operates reliably in harsh environments, typically from -40 °C to +70 °C, suitable for most climates.

Applications:

• Aerial Building-to-Building Connection: Installed between utility poles or building rooftops to connect fiber distribution boxes (FDBs) across residential communities, industrial parks, or campuses.

• Pole-to-Building Aerial Drop: From street utility poles to the exterior walls of residential/commercial buildings, then routed along eaves or wall-mounted cable trays to enter the building.

• Indoor-Outdoor Transition: After aerial deployment to the building exterior, the fiber unit (separated from the steel messenger wire) is routed through wall penetrations, cable shafts, or indoor (trays) to reach user-specific optical network terminals (ONTs).

• Narrow-Space Installation: Suitable for old communities or dense urban areas where installation space is limited (e.g., along narrow building gaps, under eaves).

Selection & Installation Tips:

• Core Count Selection: Choose 1–2 cores for single-user homes; 4 cores for multi-dwelling units (MDUs) or scenarios requiring backup fibers.

• Environmental Matching: Select UV-resistant models for long-term outdoor use; choose extended temperature-range versions for cold regions (-40°C) or high-temperature areas.

• Mechanical Requirement Check: For longer aerial spans (e.g., >50 meters), confirm the cable's long-term tensile strength with the manufacturer to avoid sagging or breakage.

• Installation Precautions:

• Reserve 5–10% length for thermal expansion/contraction when installing in areas with large temperature fluctuations.

• Maintain a minimum bending radius (≥15 mm) during routing to avoid fiber damage.

• Secure the steel messenger wire at fixed intervals (recommended ≤20 meters) to prevent excessive tension on the fiber unit.