What is BS EN 50411‑3‑3 - Fibre management systems and protective housings to be used in optical fibre communication systems about?
BS EN 50411 is a series on fibre management systems and protective housings to be used in optical fibre communication systems. It manages fibre connections from outside of the fibre rack to the fibre routers. BS EN 50411‑3‑3 contains the initial, start of life dimensional, optical, mechanical, and environmental performance requirements, which a single mode fusion splice protector need to meet for it to be categorized as an EN standard product.
In BS EN 50411‑3‑3 the product is qualified for EN IEC 60793-2-50 type B-652.D single-mode fibres it is also suitable for fusion splice protection of multimode fibre with 125 μm diameter glass cladding and other single-mode fibres with 125 μm diameter glass cladding.
The installed fusion splice protector needs to fit into optical fibre splice cassettes or splice trays. BS EN 50411‑3‑3 specifies the following physical interface dimensions:
- Cross-sectional profile with width, height, or diameter (in millimetres)
- Length (in millimetres)
Who is BS EN 50411‑3‑3 - Fibre management systems and protective housings to be used in optical fibre communication systems for?
BS EN 50411‑3‑3 on fibre management systems is useful for:
- Telecommunication equipment manufacturers
- Electrical equipment manufacturers
- Design engineer
- Quality control personnel
- Research and development
Why should you use BS EN 50411‑3‑3 - Fibre management systems and protective housings to be used in optical fibre communication systems?
Fibre-optic cable duct containing many fibres comes from far end sites and terminates on the fibre management systems using splicing technology. In BS EN 50411‑3‑3 the performance of the fusion splice protector is given with selected fibres as specified. BS EN 50411‑3‑3 discusses the tests these tests are selected combined with the severities and durations are representative of an outdoor enclosed environment defined as category OP in EN IEC 61753-1.
A single-mode fibre fusion splice protector is a passive component, which provides mechanical and environmental protection to a single fibre or ribbon fibre fusion splice. The fused fibres are protected against the ingress of dust or temporary flooding by a sealing material, generally a polymer material such as hot melt adhesive or mastic. To ensure that the single-mode optical fibre fusion splice protector can be used in outdoor closures, boxes or street cabinets for categories A, G or S (as defined in EN IEC 61753 1) the specified lower temperature is extended to −40 °C and a water immersion requirement for temporary flooding conditions are added. Using BS EN 50411‑3‑3 you can understand the dimensional, optical, mechanical, and environmental performance requirements of single-mode optical fibre fusion splice protectors.
What’s changed since the last update?
BS EN 50411‑3‑3:2019 supersedes BS EN 50411‑3‑3:2011. BS EN 50411‑3‑3:2019 includes some technical changes with respect to BS EN 50411‑3‑3:2011. These include:
- Terms and definitions are added
- The EN 61753-1:2007 category u tests and test severities are replaced by the EN IEC 61753-1:2018 category op test and test severities
- A 23 mm length variant has been added to the variant xx3
- The colour coding variant xx6 is harmonized with EN 60304
- Tolerance of height and width increased to ± 0,1 mm for variant s1-12 and ± 0,15 mm for s1-16
