BS EN 60794-3-20:2009 Optical fibre cables. Outdoor cables. Family specification for self-supporting aerial telecommunication cables
BS EN 60794-3-20 is a family specification for optical self-supporting aerial telecommunication cables. Requirements of the sectional specification BS EN 60794-3 for duct, buried and aerial cables are applicable to cables covered by this standard.
Self-supporting aerial telecommunication cable in this context means a cable construction with sufficient strength members designed to be suspended on poles and similar devices without the aid of another supporting wire or conductor. ADSS cables and other constructions intended for high-voltage applications are not covered by BS EN 60794-3-20. Detail specifications may be prepared based on this family specification.
Clause A.2 contains requirements that supersede the normal requirements in case the cables are intended to be used in installation governed by the MICE table of ISO/IEC 24702.
The parameters specified in BS EN 60794-3-20 may be affected by measurement uncertainty arising either from measurement errors or calibration errors due to lack of suitable standards. Acceptance criteria should be interpreted with respect to this consideration (see IEC 60794-3, Clause 8).
The number of fibres tested should be representative of the cable design and should be agreed between the customer and the supplier.
Contents of BS EN 60794-3-20:
- Scope
- Normative references
- Symbols
- Optical fibre, cable construction and tests applicable for aerial telecommunication cables to be used in self-supporting aerial applications
- Optical fibres
- Common single-mode fibre requirements
- Single-mode dispersion unshifted (B1.1) optical fibre
- Single-mode dispersion unshifted (B1.2) optical fibre
- Single-mode dispersion unshifted (B1.3) optical fibre
- Single-mode dispersion shifted (B2) optical fibre
- Single-mode non-zero dispersion (B4) optical fibre
- Single-mode non-zero dispersion shifted (B5) optical fibre
- Single-mode (B6.a) optical fibre
- Cable element
- Installation and operating conditions
- Tests applicable
- Installation conditions
- Mechanical and environmental tests
- Tests applicable
- Details on family requirements and test conditions for optical fibre cable tests
- Family specification for self-supporting aerial telecommunication cables