International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 50411-2-5:2009
Title Fibre organisers and closures to be used in optical fibre communication systems - Product specifications - Part 2-5: Sealed closures for air blown fibre microduct, type 1, for category S & A
Project Number 15751
Abstract/Scope 1.1 Product definition This specification contains the initial, start of life dimensional, optical, mechanical and environmental performance requirements which a fully installed blown fibre protected microduct closure must meet in order for it to be categorised as an EN standard product. These products are suitable for installation of and use with microduct fibre units, microduct optical fibre cables, microduct and protected microduct as defined within EN 60794-5. 1.2 Operating environment The tests selected combined with the severities and duration are representative of an outside plant for subterranean and/or aerial environment defined by: - ETSI EN 300 019 series: Class 8.1: underground locations (without earthquake requirement); - EN 61753-1: Category S: subterranean environment; Category A: aerial environment. 1.3 Reliability Whilst the anticipated service life expectancy of the product in this environment is a minimum of 20 years, compliance with this specification does not guarantee the reliability of the product. This should be predicted using a recognised reliability assessment programme. 1.4 Quality assurance Compliance with this specification does not guarantee the manufacturing consistency of the product. This should be maintained using a recognised quality assurance programme. 1.5 Allowed fibre and cable types This closure standard covers all IEC standard optical fibre microducts, and protected microducts with their various fibre capacities, types and designs. This includes, but is not limited to, optical fibre cable standard EN 60794-5. This product specification has only considered protected microduct cables containing microducts of same outside diameters. There are other hybrid protected microduct cables with microducts of differing OD's, with too many variants to be included in this PS. 1.6 Allowed microduct connector types This closure standard covers all EN standard microduct connectors, including: straight, reducer/enlarger stem, reducer/enlarger, close down, liquid block, liquid block with barb end, and end stop connectors. This includes, but is not limited to, EN 50411-2-8. 1.7 Microduct storage constraints Microduct excess storage is not required in all air blown fibre closures. Some closure types do not have sufficient internal space to provide storage. The need for microduct storage is provided inside the closure when opened, typically to ensure that there is enough microduct to fulfil the following functions: - remove the coiled microduct attached to the 'closedown' connectors, to a remote location, close to blowing equipment, in the process uncoiling the microducts to aid blowing; - provide additional microduct if repeated cut backs for connectors are planned or likely to be fitted throughout the closure life. The minimum microduct 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 microduct diameter.


Current Stage code 6060
Current Stage code date 2009-05-20
Current Stage code deadline 2009-12-01
Deadline date for vote 2008-09-13


Order Voucher  


IEC Technical Body  
Reference Document  
ICS 33.180.20 - Fibre optic interconnecting devices
Keywords Optical fibre; Communication; Cable joint; Sealed closure; Air blown
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2009-05-20 2009-12-01 export to doc file  EN  DE
5099 2008-12-01 2009-04-01  
5060 2008-11-13 2008-11-27 export to doc file  EN
5020 2008-09-05 2008-11-07 export to doc file  EN
4099 2008-06-12 2008-09-17  
4060 2008-04-07 2008-06-18 export to doc file  EN
4020 2007-11-02 2008-04-04 export to doc file  EN
3099 2007-05-11 2007-11-02  
3090 2006-11-10 2006-12-31  
2020 2005-12-01 2006-06-02  
2020 2004-11-25 2005-05-25  
2020 2003-11-25 2004-11-25  
2020 2003-03-18 2003-11-27  

Implementation Dates

date of Ratification (DOR) (1) 2008-12-01
date of Availability (DAV) (2) 2009-05-20
date of Announcement (DOA) (3) 2009-06-01
date of Publication (DOP) (4) 2009-12-01
date of Withdrawal (DOW) (5) 2011-12-01


(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.