Ordinary non-metallic optical cables and ASS optical cables

Ordinary non-metallic optical cables and ADSS optical cables use non-metallic reinforcements like FRP, aramid, or glass fiber to provide strength, insulation, and environmental resistance, making them ideal for outdoor and high-voltage applications.

Ordinary Non-Metallic Optical Cables

Construction: These cables typically consist of optical fibers housed in loose tubes made of high-modulus plastics, filled with thixotropic jelly, and stranded around a central strength member. The core is covered with water-blocking tape and yarns, followed by a PE inner sheath and an anti-rodent PE jacket for protection against mechanical damage and pests (Premier Cables) . Reinforcement Materials:

• FRP (Fiber Reinforced Plastic): Provides mechanical strength without electrical conductivity, making it suitable for lightning-prone areas. It is lightweight, corrosion-resistant, and does not generate induction currents, allowing installation near high-voltage lines .
• Aramid (Kevlar/Twaron): High-strength, high-modulus fibers with excellent thermal and oxidation resistance, commonly used in ADSS cables for self-supporting applications .
• Glass Fiber Yarn: Offers high tensile strength, insulation, and corrosion resistance, ideal for wet or high-voltage environments . Advantages:
• Non-conductive, safe for installation near electrical lines.
• Lightweight, reducing installation tension and labor.
• Resistant to corrosion, moisture, and rodent damage.
• Flexible and easy to splice or terminate compared to armored metallic cables .

ADSS (All-Dielectric Self-Supporting) Optical Cables

Construction: ADSS cables are fully dielectric, meaning they contain no metallic components. They use aramid yarns or FRP rods as strength members to support the cable weight and withstand environmental loads. The optical fibers are protected in loose tubes or ribbons, with water-blocking materials and an outer PE jacket . Key Features:

• Self-supporting: Can be installed directly on utility poles without additional support.
• Non-metallic: Safe for high-voltage lines as they do not conduct electricity or generate induced currents.
• Durable: Resistant to UV, moisture, and temperature variations.
• Lightweight: Easier to handle and install over long spans . Applications:
• Overhead power lines, especially in high-voltage areas.
• Urban, suburban, and rural outside plant networks.
• Environments with high lightning risk or corrosive conditions .

Comparison

Both cable types leverage non-metallic materials to provide mechanical strength, environmental resistance, and electrical safety, but ADSS cables are specifically engineered for self-supporting aerial installations, while ordinary non-metallic cables are more versatile for underground, conduit, or aerial applications.