BS EN 60794 is a series on optical fibre cables. Optical fibre cables are an assembly similar to an electrical cable but containing one or more optical fibres that are used to carry light. BS EN 60794-2-20 specifies multi-fibre optical cables for indoor use. The requirements of the sectional specification IEC 60794-2 are applicable to cables covered by BS EN 60794-2-20. BS EN 60794-2-20 contains a Blank Detail Specification and general guidance in case the cables are intended to be used in installation governed by the MICE table of ISO/IEC 24702 (Industrial premises) [11]1.
BS EN 60794-2-20 on optical fibre cables is useful for:
The optical fibre elements are typically individually coated with plastic layers and contained in a protective tube suitable for the environment where the cable is used. BS EN 60794-2-20 describes the cable that is designed and manufactured for an expected operating lifetime of at least 15 years. In BS EN 60794-2-20, the attenuation at the operational wavelength(s) of the optical fibres contained in the installed cable will not exceed values agreed between customer and supplier. The materials in the cable shall not present a health or environmental hazard within its intended use.
Compliance with BS EN 60794-2-20 requirements are verified by carrying out tests selected from the following. It is not intended that all tests be carried out; the frequency of testing is agreed upon between customer and supplier. Some of the tests can be performed on a short sample length of cable which is still an integral part of a longer length. Thus, it becomes possible to detect permanent changes in attenuation within the measurement uncertainty of the equipment used. The wavelength and maximum value of this attenuation change are agreed upon between customer and supplier. Using BS EN 60794-2-20 you can specify multi-fibre optical cables for indoor use.
EN 60794-2-20:2014
IEC 60794-2-20:2013