GYFXTBY Non-metallic Oval Flat Drop Cable

GYFXTBY Non-metallic Oval Flat Drop Fiber Optic Cable

GYFXTBY is an all-dielectric self-supporting (ADSS) oval flat drop fiber optic cable, specifically designed for the "last-mile" connection in FTTH/FTTx networks. It excels in user access and branch connections, featuring easy stripping, lateral pressure resistance, light weight, and lightning protection. It supports both aerial self-supporting installation and duct routing.

Product Overview:

• Use: Aerial self-supporting drop/branch connection, enabling last-mile access to residential buildings, offices, or end-users.

• Structure: Oval flat outer shape, composed of a central loose tube, two parallel FRP strength members (on both sides), water-blocking yarn, and a PE outer sheath. Optional rip cords are available for quick on-site stripping.

• Fiber Count: Typically 2–24 cores, mainly using single-mode fibers (e.g. G.652D, the most common type for FTTH).

Key Structural Components:

Main Characteristics:

• Oval Flat & Lateral Pressure Resistance: The flat oval design minimizes sensitivity to trampling or extrusion, making it suitable for installation in narrow spaces (e.g., between building walls) and compatible with special clamps.

• Easy Construction: Small diameter, lightweight, and easy-to-strip sheath reduce labor intensity. It streamlines both aerial deployment and indoor/outdoor drop-into-user processes.

• All-Dielectric Design: No metal strength members, eliminating the risk of lightning-induced damage—ideal for lightning-prone areas (e.g., rural regions, high-altitude areas).

• Environmental & Mechanical Stability: Precise fiber excess length control and high-modulus loose tubes ensure stable optical attenuation (low signal loss) and geometric performance across temperature fluctuations (-40°C to +60°C) and mechanical stress.

Typical Applications:

• FTTH Last-Mile Access: Aerial self-supporting deployment from utility poles to residential buildings, villas, or office floors.

• Branch Distribution: Connecting distribution points to end-users in scenarios like rural networks, industrial parks, or residential communities.

• Duct/Wall-Mounted Routing: Can be used in conjunction with butterfly drop cables to form an integrated "aerial-to-indoor" solution, e.g., routed through underground ducts or attached to building exteriors.

Selection & Installation Recommendations:

• Fiber Count & Type: Choose 2–24 cores based on user density and future network expansion needs. G.652D single-mode fiber is preferred for its wide compatibility and low loss.

• Aerial Installation: Use matching wedge clamps for fixation; prioritize self-supporting routing. Avoid excessive tension or small-radius bending (minimum bend radius: ≥10x cable diameter for static use, ≥20x for dynamic use).

• User-End Protection: When routing into buildings, use protective conduits or concealed wall-mounted channels. Ensure waterproof sealing at the entry point (e.g., using waterproof glands) to prevent water or dust ingress.

FAQ:

What are the typical installation methods for GYFXTBY fiber optic cable?

GYFXTBY, as an all-dielectric self-supporting (ADSS) oval flat drop cable, is designed for flexibility in FTTH/FTTx "last-mile" scenarios. Its installation methods are tailored to its structural features (lightweight, flat shape, FRP reinforcement) and application needs (aerial, duct, or direct indoor/outdoor routing). Below are the 4 most common installation methods, along with key operational details and precautions.

1. Aerial Self-Supporting Installation (Most Common)

Key Steps:

1. Pre-installation Preparation:

• Inspect utility poles (stability, load capacity) and clear obstacles (tree branches, existing cables) along the route.

• Prepare tools: wedge clamps (matched to GYFXTBY cable's flat shape), cable pay-off stands, tension meters, and fiber optic strippers.

2. Cable Routing & Tension Control:

• Deploy the cable from the pay-off stand, maintaining a constant tension (typically 50–100 N, depending on core count) to avoid overstretching.

• Use wedge clamps to fix the cable to utility poles: position clamps at pole tops or designated brackets, ensuring the flat side of the cable is aligned with the clamp to prevent slippage.

3. Span & Sag Adjustment:

• For short spans (≤50 meters, common in residential areas), set a small sag (5–10 cm) to accommodate temperature changes (expansion in summer, contraction in winter).

• For longer spans (50–100 meters), use tension meters to fine-tune sag and avoid excessive stress on the cable.

4. Termination & Protection:

• At the end of the aerial span (e.g., near a building), use a cable entry box to transition the cable from aerial to indoor/duct routing. Seal the box to prevent water intrusion.

Precautions:

• Avoid small-radius bending (minimum static bend radius: ≥10× cable diameter; dynamic: ≥20×) during installation.

• Keep the cable at least 0.5 meters away from high-voltage power lines to reduce electromagnetic interference (EMI), even though GYFXTBY is all-dielectric.

  
  

2. Duct Installation

Key Steps:

1. Duct Inspection & Preparation:

• Check duct integrity (no cracks, blockages) using a duct rodder. Clean the duct with compressed air or a duct brush to remove dust or debris.

• Install a pull rope (nylon or polyester) inside the duct using a duct rodder—this rope will pull the GYFXTBY cable through.

2. Cable Pulling:

• Attach the cable’s leading end to the pull rope using a cable pulling grip (ensure a secure connection to avoid detachment mid-pull).

• Use a manual or electric cable puller to pull the cable at a steady speed (≤5 meters per minute). For long ducts (>100 meters), add intermediate pull points to reduce friction.

3. Duct Sealing & Marking:

• After pulling, seal both ends of the duct with waterproof tape or duct seals to prevent water, rodents, or debris from entering.

• Mark duct access points (e.g., manholes, handholes) with labels indicating "GYFXTBY Fiber Optic Cable" for future maintenance.

Precautions:

• Use a lubricant (compatible with HDPE sheaths) for long or curved ducts to reduce friction and avoid sheath damage.

• Do not pull the cable at an angle—keep it aligned with the duct axis to prevent kinking.

  
  

3. Wall-Mounted Installation

Key Steps:

1. Route Planning:

• Mark the wall route (e.g., along corners, under eaves) to avoid obstacles (electrical outlets, water pipes) and ensure a neat appearance.

2. Fixing with Cable Clips:

• Use adhesive cable clips (for smooth walls like concrete or tile) or screwed clips (for rough walls like brick) matched to GYFXTBY’s flat width.

• Space clips 30–50 cm apart to secure the cable and prevent sagging. Ensure the cable is not compressed by the clips (avoid over-tightening).

3. Entry into Buildings:

• Drill a small hole (diameter: 10–15 mm) through the wall at the entry point. Install a waterproof grommet in the hole to protect the cable from water and sharp edges.

• Pull the cable through the grommet and into the indoor distribution box (e.g., ONU box).

Precautions:

• For outdoor walls, use UV-resistant cable clips to prevent degradation from sunlight.

• Avoid mounting the cable near heat sources (e.g., air conditioner outdoor units) to prevent sheath softening.

  
  

4. Direct Burial Installation (Special Scenario)

Key Steps:

1. Trench Digging:

• Dig a trench 60–80 cm deep (to avoid damage from gardening tools or small animals) and 10–15 cm wide. For rocky soil, line the trench with a sand bed (5 cm thick) to cushion the cable.

2. Cable Protection & Placement:

• Wrap the GYFXTBY cable in a corrugated HDPE protection tube (diameter: 20–30 mm) to resist impact and moisture.

• Place the protected cable in the trench, ensuring no kinks. Cover the cable with another 5 cm of sand, then backfill the trench with soil.

3. Marking:

• Bury warning tapes (20 cm below the ground surface) along the trench to alert future excavators. Install ground markers at both ends of the buried section.

Precautions:

• This method is only recommended for spans ≤30 meters. For longer distances, use dedicated direct-burial cables (e.g., GYTA53) instead.

• Avoid burying near water tables or areas prone to flooding, as prolonged moisture may degrade the cable's sheath over time.