ASU Fiber Optic Cable
Streamline your aerial deployments with our ASU Fiber Optic Cable. Featuring an All-Dielectric design with FRP strength members, this self-supporting cable is optimized for 80m-120m spans, offering a lightweight and safe solution for installation on utility poles alongside power lines.
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Overview
The ASU Fiber Optic Cable (Aerial Self-Supporting Unit) is engineered for outdoor aerial distribution networks where a lightweight, non-metallic solution is required. As an All-Dielectric cable, the ASU eliminates the need for grounding and is immune to electromagnetic interference, making it the perfect choice for installation alongside power lines on utility poles.
Designed for operational efficiency, this cable utilizes high-modulus FRP (Fiber Reinforced Plastic) strength members to support spans typically ranging from 80m to 120m, providing a cost-effective alternative to heavy-duty ADSS cables for urban and rural distribution.
Cable Structure: Dielectric & Robust
The ASU cable structure is optimized to withstand wind load and ice weight without sagging:
- Central Strength Member (FRP): A solid Fiber Reinforced Plastic rod sits at the center, providing high tensile strength while keeping the cable completely non-metallic.
- Loose Tube Technology: PBT loose tubes containing the optical fibers (up to 144 cores) are stranded around the central member. These tubes are filled with water-blocking jelly to protect the fibers from moisture.
- Water Blocking System: Dry water-blocking yarns or tapes are applied around the cable core to prevent water ingress.
- Rip Cord: Included for easy jacket stripping during termination.
- Outer Sheath (PE): A UV-stabilized, High-Density Polyethylene (HDPE) jacket protects the cable from harsh sunlight, abrasion, and environmental weathering.
Key Applications
The ASU cable is specifically targeted for the "Last Mile" and distribution sections of FTTx networks:
- Aerial Distribution: Self-supporting installation between poles without the need for a separate steel messenger wire.
- Power Line Co-existence: Being 100% dielectric, it can be safely strung on the same poles as low-to-medium voltage power lines (up to 12kV usually, depending on jacket type).
- Rural Connectivity: Ideal for connecting remote areas where span lengths vary between 80m and 120m.
Technical Specifications
| Cable Type | ASU (Aerial Self-Supporting Unit) |
| Structure | Stranded Loose Tube (or Uni-tube for low counts) |
| Strength Member | FRP (Fiber Reinforced Plastic) |
| Typical Span | 80m, 100m, 120m (customizable) |
| Fiber Count | 12 - 144 Cores |
| Jacket Material | UV-Resistant HDPE |
| Grounding Required? | No (All-Dielectric) |
FAQ
1. What is the difference between ASU and ADSS cable?
While both are All-Dielectric Self-Supporting cables, ADSS is typically heavier, uses Aramid Yarn (Kevlar) for very long spans (up to 1000m), and is used in high-voltage transmission. ASU is a lighter, more compact version designed for shorter spans (80-120m) in local distribution networks.
2. Does the ASU cable need to be grounded?
No. The ASU cable is constructed entirely of dielectric materials (glass, plastic, FRP). It contains no metal, so it does not conduct electricity and requires no grounding, making it safer to install near power lines.
3. What clamps should I use with ASU cable?
You should use preformed dead-end clamps or tangent suspension clamps designed for mini-ADSS or round dielectric cables. Ensure the clamp size matches the cable diameter to avoid crushing the loose tubes.
