What are the types of fiber optic cable armor

Fiber optic cable armor comes in several types, including interlock, corrugated, spiral steel, steel wire, and indoor/outdoor classifications, each designed to protect fibers from mechanical stress, rodent damage, and environmental hazards. Common Armor Types1. Interlock Armor Interlock armor consists of metal strips that interlock around the cable, forming a strong yet flexible protective layer.

It provides excellent tensile strength, crush resistance, and impact protection, making it suitable for both indoor and outdoor installations where mechanical stress is a concern. 2. Corrugated Armor Corrugated armor uses a steel tape folded into a wavy or corrugated pattern around the cable core.

This design offers superior rodent protection, moisture resistance, and crush resistance, making it ideal for direct burial and outdoor applications. 3. Spiral Steel Armor Spiral steel armor features a helically wound steel strip, providing high flexibility and ease of installation.

It protects against rodent bites, UV radiation, and mechanical stress, commonly used in outdoor environments where the cable may be exposed to harsh conditions. 4. Steel Wire Armor (SWA) Steel wire armor involves multiple steel wires wound around the cable in a helical pattern.

This type offers excellent crush resistance and protection against heavy loads, often used in underground installations, riverbeds, or seabeds. 5.

Square-

Lock Armor Square-lock armor uses square-profiled metal strips tightly wound around the cable. It provides good flexibility and bending resistance, suitable for applications requiring frequent cable movement while still offering protection against abrasion. Indoor vs Outdoor ArmorIndoor Armored Cables: Typically lighter armor, sometimes single or double layers of stainless steel or aluminum, designed for data centers, offices, and medical facilities.

They prioritize flexibility and ease of installation. Outdoor Armored Cables: Heavier armor such as steel wire, corrugated steel, or spiral steel, designed for direct burial, industrial environments, or harsh weather conditions. They provide high tensile strength, rodent protection, and resistance to moisture and UV exposure.

Summary

Armored fiber optic cables are engineered to protect delicate optical fibers from crushing, bending, abrasion, rodent attacks, and environmental hazards. The choice of armor type depends on the installation environment, mechanical stress, and flexibility requirements, with interlock, corrugated, spiral steel, steel wire, and square-lock being the most common options. Indoor and outdoor classifications further guide the selection based on exposure and durability needs.