ADSS (All Dielectric Self Supporting) fiber optic cable is a kind of self-supporting overhead optical cable. It is the only fiber cable that can work under high-voltage electric field environment, suitable for various outdoor applications.
Features
no metallic components, without the need of a messenger wire
Protection from lightning and electrical interference
UV-resistant outer jacket and Water blocked cable
High tensile strength and long term reliability
Stable and highly reliable transmission parameters
Application
ADSS fiber optic cable, due to its non-metallic material and excellent electrical insulation performance, is very advantageous in electric environment,and is the only optical cable that can work under high-voltage environments and can be used in areas with frequent lightning strikes and large-span overhead applications.
The Difference Between Single Jacket and Double Jacket
In shorter span environments like distribution lines, a single-jacket design could be the most efficient and effective design.The double-jacket cable design allows for higher tensile strength with more aramid yarn. For this reason, double-jacket designs are almost always required in transmission line applications where longer pole-to-pole span lengths require greater tensile strength.Double-jacket ADSS cable can be engineered to longer span and heavier environmental loading (e.g. ice and wind) applications.
Structrue:
a double-jacket ADSS cable is positioned above single sheathing, includes a polyethylene inner jacket that surrounds the central core of buffer tubes. Aramid yarn covers the inner jacket. A polyethylene outer jacket goes on top of the aramid yarn.
Protection level:
A single jacket offers basic protection against environmental factors like moisture and temperature variations, while a dual jacket with more aramid provides greater resistance to mechanical stresses like tension and compression during installation or due to environmental conditions.
Application:
Single jacket ADSS cables are typically used in shorter spans or where weight and size are critical factors, whereas double jacket cables are preferred for longer spans, high wind or ice loading situations.
Weight and diameter:
A single jacket cable is generally lighter and has a smaller diameter compared to a double jacket cable, which can be advantageous in certain installations.
References
1.Sterlite tech. "Selection of the Correct Optical Cable Outer Jacket for the Application"(2012)
2.Carson Joye, Application Engineer, AFL. "Single Jacket vs Double Jacket ADSS Fiber Optic Cable "(2023)
3.Hunan GL technology Co.Ltd. "What is the different between single jacket ADSS cable and double jacket ADSS cable"