Optical Fiber Outside Plant Communications Cable
|Publication Date:||8 December 2006|
This Standard covers optical fiber communications cable intended
for outdoor use and normally installed aerially, directly buried,
or placed in underground ducts. Additional requirements for
"figure-8" aerial self-supporting cables are included in Annex
D, as appropriate. Materia
• S-83-596: Optical fiber premises distribution cable (ANSI/TIA-472C000-B)
• S-101-696: Indoor-outdoor optical fiber drop cable (ANSI/TIA-472E000)
• S-110-717: Optical fiber drop cable (ANSI/TIA-472F000)
Products covered by this Standard are intended only for
operation under conditions normally found in communications
systems. These products normally convey communications signals
(voice, video, and data) from point-to-point or
When a composite cable is required, the applicable metallic conductor requirements shall be as established by agreement between the end user and the cable manufacturer. The requirements of ANSI/ICEA S-84-608 should be considered when determining appropriate requirements.
The normal temperature ranges for cables covered by this Standard are given in Table 1-1
For the purpose of this standard, very-low temperature applications, are defined as -50 °C (-58 °F) per 184.108.40.206, and are addressed in Annex C (Normative), which contains requirements for lower operating and storage temperatures than listed in Table 1.1.
The standard installation tensile rating for cables covered by this Standard is 2670 N (600 lbf). Higher tensile ratings are also acceptable for use. For applications where a lower tensile rating is approprite the standard lower tensile rating is 1330 N (300 lbf). In all cases, the residual load is defined as any load less than or equal to 30 percent of the installation tensile rating.
For self-supporting aerial applications there are additional considerations that need to be addressed to ensure that the cable design is appropriate for the self-supporting distance and environmental loading conditions. See 7.30 and Annex D for information on figure-8 self-supporting aerial cable requirements and considerations.
For aerial applications in which the optical cable is lashed to a separate messenger wire, the use of a cable designed for a standard tensile rating for installation by direct burial, trenching, or pulling into duct may be adequate.
Minimum Bend Diameter
The standard minimum bend diameters for cables covered by this Standard are:
Residual (Installed): 20 x Cable O.D.
Loaded Condition (During Installation): 40 x Cable O.D.
For very small cables, such as those installed in miniature ducts, manufacturers may specify a fixed cable minimum bend diameter (e.g., 300 mm) that is independent of the cable outer diameter (OD).
For cables not having a circular cross-section, bend diameter requirements are to be determined using the thickness (minor axis) as the cable and bending in the direction of the preferential bend.