How To Choose The Right ADSS Optic Cable?

ADSS optic cables are widely used in power systems. For a long time, many customers have been troubled by the selection of ADSS optical cables. ADSS optical cable affects the final model selection in terms of structure, span (gear distance), sheath, etc. As a professional ADSS optical cable manufacturer, HUNANGL will simply share with you how to choose the right ADSS optic cable?

First of all, from a structural point of view, ADSS optical fiber cables also have a layer-stranded structure and a central beam tube structure, as well as a single sheath structure. When the number of line cores is too many (over 12 cores), the span is too large or the load is too heavy, the layer-twisted structure should be selected; the number of cores is small and the carrying capacity is small, and the central tube structure can be selected; when the line span is less than 100m and When the tension requirement is small, ADSS optical cable with single sheath structure can be selected.

Secondly, in terms of span (span), ADSS optical fiber cables are generally laid overhead, and the distance between poles and towers determines the tension requirements of the line. The larger the span, the greater the tension requirements, and the smaller the span, the smaller the tension requirements , The span of the ADSS cable ranges from 100m to 1500m. Generally, it is recommended to choose an ADSS optical cable with a certain span. For example, if the line span is 160m, it is recommended to choose an ADSS optical cable with a span of 200m.

Finally, from the sheath point of view, according to the use environment, when the ADSS optical cable is used below 110kV line, the polyethylene sheath can meet the requirements; when the ADSS optical cable is used above 110kV line, it is necessary to consider the electrical corrosion of the ADSS cable. It is recommended Electric tracking-resistant sheath is used; when ADSS cable is used in places with fire protection requirements, special fire-resistant and flame-retardant sheath can also be used; in addition, ADSS cable is used in forest areas and other areas with serious rodent infestation, it is recommended to use rodent-proof materials. ADSS cable.

Key parameters:

ADSS Cable For overhead power lines under 110kV, PE outer sheath is applied.
ADSS Cable For power lines equal to or over 110kV, AT outer sheath is applied.

Span length (100m ~ 500m)

Rated tension strength （RTS）: The RTS parameter of ADSS optical cable is an important basis for hardware configuration (especially tensile hardware) and calculation and control of safety factor.

Max. allowed tension (MAT): The MAT is a piece of important evidence to characterize the stress-strain characteristics of the ADSS optical cable. Under this stress, the fiber deformation should not be more than 0.05% (rolled) and not more than 0.1% (core pipe) without additional attenuation. Generally, it is 40% RTS.

Annual average running tension(EDS): The annual average stress is sometimes called the daily average stress, it refers to the wind and no ice and the annual average temperature, the theoretical calculation of the load cable tension, can be considered as the ADSS in the long-term operation of the tension average (should) force. EDS is generally (16 ~ 25)% RTS.