What is BS EN 50411-2-9 - Fibre organisers and closures to be used in optical fibre communications systems about?
BS EN 50411 is a series on fibre organisers and closures to be used in optical fibre communications systems. Fibre organisers and closures are devices used to provide space and protection for fibre optic cables spliced together. BS EN 50411-2-9 contains the initial, start of life dimensional, mechanical, and environmental performance requirements that a fully installed blown fibre protected, non-sealed closure for duct and micro duct cable, must meet in order for it to be categorised as an EN standard product.
These products are suitable for installation of and use with micro-duct fibre units, micro duct optical fibre cables, micro duct and protected micro dust as defined within EN 60794-5. When the non-sealed closures are installed in subterranean environments it is mandatory to use sealed ABF connectors meeting EN 50411-2-8 in order to guarantee the expected network performance and reliability.
Who is BS EN 50411-2-9 - Fibre organisers and closures to be used in optical fibre communications systems for?
BS EN 50411-2-9 on fibre organisers and closures is useful for:
- Telecommunication component manufacturers
- Telecommunication equipment manufacturers
- Design engineers
- Quality control personnel
Why should you use BS EN 50411-2-9 - Fibre organisers and closures to be used in optical fibre communications systems?
The fibre optic closure connects and stores optical fibres safely either in the outside plant or indoor buildings. BS EN 50411-2-9 defines micro duct storage constraints that state that Micro duct excess storage is not required in all air is blown fibre closures. Some closure types do not have sufficient internal space to provide storage. The need for micro duct storage is provided inside the closure when opened, typically to ensure that there is enough micro duct to fulfil the following functions of removing the coiled micro duct attached to the ‘close down’ connectors, to a remote location, close to blowing equipment, in the process uncoiling the micro ducts to aid blowing and provide additional micro duct if repeated cutbacks, for connectors are planned or likely to be fitted throughout the closure life. The minimum micro-duct storage bend radius is based on the outside diameter and material selection, typically based on 12 times the outside diameter (below 8 mm) and 20 times above. During fibre blowing the bend radius is typically 20 times the micro duct diameter. Using BS EN 50411-2-9 you can specify the initial, start of life dimensional, mechanical, and environmental performance requirements that a fully installed blown fibre protected, non-sealed closure for duct and micro duct cable, must meet in order for it to be categorised as an EN standard product.
