SIST EN 50411-2-4:2022
(Main)Fibre management systems and protective housings to be used in optical fibre communication systems - Product specifications - Part 2-4: Sealed dome fibre splice closures for category S & A
Fibre management systems and protective housings to be used in optical fibre communication systems - Product specifications - Part 2-4: Sealed dome fibre splice closures for category S & A
This specification contains the initial, start of life dimensional, optical, mechanical and environmental performance requirements of a fully installed splice closure in order for it to be categorised as an EN standard product.
LWL-Spleißkassetten und -Muffen für die Anwendung in LWL-Kommunikationssystemen - Produktnormen - Teil 2-4: LWL-Muffen Bauart 1 mit abgedichteter Haube für die Kategorien S und A
1.1 Produktdefinition
Dieses Dokument enthält die Anfangs- und Maßanforderungen zu Beginn der Lebensdauer sowie die
optischen, mechanischen und umweltbezogenen Betriebsverhaltensanforderungen an eine vollständig
installierte Spleißmuffe, damit sie als ein europäisches Normprodukt eingestuft werden kann.
1.2 Betriebsumgebung
Die ausgewählten Prüfungen in Kombination mit der Prüfschärfe und der Dauer sind repräsentativ für eine
Außenanlage mit unterirdischer und/oder Luftumgebungen, die definiert sind in:
EN IEC 61753-1:2018 Kategorie S: unterirdische Umgebung
Kategorie A: Umgebung in Luft
1.3 Zuverlässigkeit
Die erwartete Betriebslebensdauer des Produkts in dieser Umgebung beträgt 20 Jahre, wobei die Einhaltung
dieser Norm die Zuverlässigkeit des Produktes nicht sichergestellt. Diese sollte unter Verwendung eines
anerkannten Programms zur Bewertung der Zuverlässigkeit vorausgesagt werden.
1.4 Qualitätssicherung
Die Einhaltung dieser Norm stellt nicht die Gleichmäßigkeit bei der Fertigung des Produktes sicher. Diese
sollte unter Verwendung eines anerkannten Qualitätssicherungsprogramms aufrechterhalten werden.
1.5 Zulässige Faser- und Kabeltypen
Obwohl die Prüfungen der Gebrauchseigenschaften an Prüflingen mit nicht dispersionsverschobener Faser
nach EN 60793-2-50, B1.3 (siehe Anhang A) durchgeführt wird, ist die einmal nach dieser europäischen
Norm geprüfte Muffe auch für andere Fasertypen geeignet, z. B. für nulldispersionsverschobene, nichtnulldispersionsverschobene
sowie für Mehrmodenfasern.
Diese Muffennorm ermöglicht sowohl die Verwendung von Einmoden- als auch Mehrmoden-Lichtwellenleitern
und deckt die Lichtwellenleiterkabel aller IEC-Normen mit ihren unterschiedlichen LWL-Aufnahmekapazitäten,
Kabeltypen und -Ausführungen ab. Dies schließt unter anderem die Normen für LWL-Kabel
EN 60794-2 (Innenkabel) und EN 60794-3 (Außenkabel) ein.
Organiseurs et boîtiers de fibres à utiliser dans les systèmes de communication par fibres optiques - Spécifications de produits - Partie 2-4: Boîtiers à épissure de fibres sous dôme scellés Type 1, pour catégories S & A
1.1 Définition du produit
Le présent document contient les exigences de performances initiales, de début de vie, dimensionnelles, optiques, mécaniques et environnementales d’un boîtier à épissure entièrement installé, afin d’être classé comme produit couvert par une Norme européenne.
1.2 Environnement de fonctionnement
Les essais choisis, combinés avec les sévérités et les durées, sont représentatifs d’une installation extérieure pour les environnements souterrains et/ou aériens définis par les normes suivantes:
EN IEC 61753 1 catégorie S: environnement souterrain
catégorie A: environnement aérien
1.3 Fiabilité
Bien que l’espérance de vie en service prévue du produit dans cet environnement soit de 20 ans, la conformité à cette spécification ne garantit pas la fiabilité du produit. Celle-ci est estimée en utilisant un programme reconnu d’évaluation de la fiabilité.
1.4 Assurance de la qualité
La conformité à la présente spécification ne garantit pas la cohérence de fabrication du produit. Elle est maintenue en utilisant un programme reconnu d’assurance qualité.
1.5 Types de fibres et câbles autorisés
La présente norme de boîtier permet d’utiliser tant la fibre unimodale que la fibre multimodale et couvre tous les câbles à fibres optiques des normes IEC avec leurs différents types, capacités et conceptions de fibres. Cela inclut notamment les normes de câbles à fibres optiques EN 60794 2 (intérieurs), EN 60794 3 (extérieurs).
Les essais de performance optique sont effectués sur des échantillons d’essais avec des fibres unimodales selon l’EN IEC 60793 2 50 (voir Annexe A). Le type de fibre choisi pour les échantillons d’essais optiques dépend de la conception du système de gestion des fibres.
Sistemi za upravljanje z optičnimi vlakni in zaščitna ohišja za optične komunikacijske sisteme - Specifikacije proizvoda - 2-4. del: Okrovi optičnih spojnic z zatesnjenimi pokrovi za kategorijo S&A
Ta dokument določa tehnične lastnosti in merilne metode za radiodifuzijske zvočne sprejemnike z demodulacijo DRM.
OPOMBA: Razmerje med tem dokumentom in bistvenimi zahtevami člena 3.2 Direktive 2014/53/EU [i.1] je podano v dodatku A.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 50411-2-4:2022
01-februar-2022
Nadomešča:
SIST EN 50411-2-4:2012
Sistemi za upravljanje z optičnimi vlakni in zaščitna ohišja za optične
komunikacijske sisteme - Specifikacije proizvoda - 2-4. del: Okrovi optičnih
spojnic z zatesnjenimi pokrovi za kategorijo S&A
Fibre management systems and protective housings to be used in optical fibre
communication systems - Product specifications - Part 2-4: Sealed dome fibre splice
closures for category S & A
LWL-Spleißkassetten und -Muffen für die Anwendung in LWL-Kommunikationssystemen
- Produktnormen - Teil 2-4: LWL-Muffen Bauart 1 mit abgedichteter Haube für die
Kategorien S und A
Organiseurs et boîtiers de fibres à utiliser dans les systèmes de communication par
fibres optiques - Spécifications de produits - Partie 2-4: Boîtiers à épissure de fibres sous
dôme scellés Type 1, pour catégories S & A
Ta slovenski standard je istoveten z: EN 50411-2-4:2021
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
SIST EN 50411-2-4:2022 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 50411-2-4:2022
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SIST EN 50411-2-4:2022
EUROPEAN STANDARD EN 50411-2-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2021
ICS 33.180.20 Supersedes EN 50411-2-4:2012 and all of its
amendments and corrigenda (if any)
English Version
Fibre management systems and protective housings to be used
in optical fibre communication systems - Product specifications -
Part 2-4: Sealed dome fibre splice closures for category S & A
Organiseurs et boîtiers de fibres à utiliser dans les LWL-Spleißkassetten und -Muffen für die Anwendung in
systèmes de communication par fibres optiques - LWL-Kommunikationssystemen - Produktnormen - Teil 2-4:
Spécifications de produits - Partie 2-4: Boîtiers à épissure LWL-Muffen Bauart 1 mit abgedichteter Haube für die
de fibres sous dôme scellés Type 1, pour catégories S & A Kategorien S und A
This European Standard was approved by CENELEC on 2021-08-09. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50411-2-4:2021 E
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SIST EN 50411-2-4:2022
EN 50411-2-4:2021 (E)
Contents Page
European foreword .4
1 Scope .6
1.1 Product definition .6
1.2 Operating environment .6
1.3 Reliability .6
1.4 Quality assurance .6
1.5 Allowed fibre and cable types .6
2 Normative references .6
3 Terms and definitions .8
4 Description . 11
4.1 Closure housing . 11
4.2 Cable seals . 12
4.3 Fibre management system . 13
5 General requirements . 13
5.1 Materials . 13
5.2 Storage, transportation and packaging . 13
5.3 Installation and intervention . 13
5.4 Closure overpressure safety . 14
5.5 Colour and marking . 14
6 Variants . 14
7 Dimensional requirements . 18
7.1 Dimensions of closures for Multiple Element and Multiple Ribbon fibres . 18
7.2 Dimensions of closures for Single Circuit, Single Element and Single Ribbon . 19
8 Tests . 20
8.1 Sample size . 20
8.2 Test sample preparation . 20
8.3 Test and measurement methods . 25
8.4 Test sequence . 25
8.5 Pass/fail criteria . 25
9 Test report . 25
10 Performance requirements . 26
10.1 Dimensional and marking requirements . 26
10.2 Sealing, optical and visual examination pass/fail criteria . 26
10.3 Sealing performance requirements . 27
10.4 Optical performance requirements . 32
Annex A (normative) Fibre for test sample details . 36
A.1 Fibre type for test sample . 36
Annex B (normative) Sample size and product sourcing requirements . 38
Annex C (informative) Families of FMS covered in this standard . 40
2
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SIST EN 50411-2-4:2022
EN 50411-2-4:2021 (E)
Annex D (informative) Dimensions of FMS for multiple element and multiple ribbon . 43
Annex E (informative) Dimensions of S type FMS for Single Circuit, Single Element and
Single Ribbon . 44
Bibliography . 46
3
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SIST EN 50411-2-4:2022
EN 50411-2-4:2021 (E)
European foreword
This document (EN 50411-2-4:2021) has been prepared by CLC/TC 86BXA, “Fibre optic interconnect,
passive and connectorised components”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2022-05-26
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2024-11-26
conflicting with this document have to be
withdrawn
This document supersedes EN 50411-2-4:2012 and all of its amendments and corrigenda (if any).
EN 50411-2-4:2021 includes the following significant technical changes with respect to
EN 50411-2-4:2012:
— reference EN IEC 61756-1 is added;
— terms and definitions are added;
— harmonized general requirements with the EN IEC 61753-111 series;
— the IEC 61753-1:2007 categories A and S tests and test severities are replaced by the
IEC 61753-1:2018 categories A and S tests and test severities;
— maximum single circuit splice capacity of size E closure reduced from 84 splices to 72 splices;
— variant XX (FMS designed for fibre type) added;
7
— test pressure for category A changed to 20 kPa overpressure;
— reduced loads in cable retention test for small diameter cables and tubes;
— axial compression test of cables is added;
— number of assembly and disassembly cycles reduced to 5 cycles;
— resistance to solvents and contaminating fluids for category S has changed. The duration of the
immersion in diesel became 1 h and the drying time 24 h. Immersion in kerosene is removed;
— duration of the change of temperature reduced to 12 cycles;
— the test “resistance to shot gun blasts” test is removed;
— fibre type B-567 added for test sample.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
4
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SIST EN 50411-2-4:2022
EN 50411-2-4:2021 (E)
Fibre management systems and protective housings to be used in optical fibre communication systems –
Product specifications
Part 2–4: Sealed dome fibre splice closures for category S and A
Description Performance
Construction: Sealed dome ended Applications:
Cable seals: Heat activated and or cold applied Optical fibre cable networks
Fibre management: Single Circuit, Single Element, — for underground (EN IEC 61753-1 category S);
Multiple Element and/or
— for aerial (EN IEC 61753-1 category A).
Single/Multiple Ribbon
Related documents:
EN IEC 60793-2-50, Optical fibres – Part 2–50: Product specifications – Sectional specification for class B single-
mode fibres (IEC 60793-2-50)
EN 60794-2, Optical fibre cables – Part 2: Indoor cables – Sectional specification (IEC 60794-2)
EN 60794-3, Optical fibre cables – Part 3: Outdoor cables – Sectional specification (IEC 60794-3)
EN IEC 61753-1, Fibre optic interconnecting devices and passive components - Performance standard – Part 1:
General and guidance (IEC 61753-1)
EN IEC 61756-1, Fibre optic interconnecting devices and passive components - Interface standard for fibre
management systems - Part 1: General and guidance (IEC 61756-1)
EN 61300 series, Fibre optic interconnecting devices and passive components – Basic test and measurement
procedures (IEC 61300 series)
ETSI EN 300 019, Environmental Engineering (EE) - Environmental conditions and environmental tests for
telecommunications equipment
Construction and sizes: Maximum splice capacity depending closure size and
fibre circuit separation level
Size S type FMS M type FMS
Single Single Single Multiple Multiple
Circuit Element Ribbon Element Ribbon
(SC) (SE) (SR) (ME) (MR)
A - - - 72 -
splices
B 12 72 48 96 -
splices splices splices splices
C
24 144 72 144 -
splices splices splices splices
D 48 288 144 576 -
splices splices splices splices
E 72 216 144 - -
splices splices splices
F 144 432 288 - -
splices splices splices
G 192 624 384 - 288
splices splices splices splices
H 240 864 432 - 1 152
splices splices splices splices
5
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SIST EN 50411-2-4:2022
EN 50411-2-4:2021 (E)
1 Scope
1.1 Product definition
This document contains the initial, start of life dimensional, optical, mechanical and environmental
performance requirements of a fully installed splice closure in order for it to be categorized as a
European Standard product.
1.2 Operating environment
The tests selected combined with the severity and duration are representative of an outside plant for
subterranean and/or aerial environments defined by:
EN IEC 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 20 years, compliance
with this specification does not guarantee the reliability of the product. This is predicted using a
recognized reliability assessment programme.
1.4 Quality assurance
Compliance with this specification does not guarantee the manufacturing consistency of the product.
This is maintained using a recognized quality assurance programme.
1.5 Allowed fibre and cable types
This closure standard allows both single-mode and multi-mode fibre to be used and covers all IEC
standard optical fibre cables with their various fibre capacities, types and designs. This includes, but is
not limited to, optical fibre cable standards EN 60794-2 (indoor) and EN 60794-3 (outdoor).
The optical performance tests are carried out on test samples with EN IEC 60793-2-50 single-mode
fibre (see Annex A). The selected fibre type for the optical test samples depends on the design of the
fibre management system.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 60068-2-10, Environmental testing - Part 2-10: Tests - Test J and guidance: Mould growth (IEC
60068-2-10)
EN IEC 60793-2-50, Optical fibres - Part 2-50: Product specifications - Sectional specification for class
B single-mode fibres (IEC 60793-2-50)
EN 61300-1, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 1: General and guidance (IEC 61300-1)
EN 61300-2-1, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-1: Tests - Vibration (sinusoidal) (IEC 61300-2-1)
EN IEC 61300-2-4, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-4: Tests – Fibre or cable retention (IEC 61300-2-4)
6
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SIST EN 50411-2-4:2022
EN 50411-2-4:2021 (E)
EN 61300-2-5, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-5: Tests – Torsion (IEC 61300-2-5)
EN 61300-2-9, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-9: Tests – Shock (IEC 61300-2-9)
EN 61300-2-10, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-10: Tests - Crush resistance (IEC 61300-2-10)
EN 61300-2-11, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-11: Tests - Axial compression (IEC 61300-2-11)
EN 61300-2-12, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures — Part 2-12: Tests — Impact (IEC 61300-2-12)
EN 61300-2-22, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-22: Tests - Change of temperature (IEC 61300-2-22)
EN 61300-2-23, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-23: Tests - Sealing for non-pressurized closures of fibre optic devices
(IEC 61300-2-23)
EN 61300-2-26, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-26: Tests - Salt mist (IEC 61300-2-26)
EN 61300-2-33, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-33: Tests - Assembly and disassembly of fibre optic mechanical
splices, fibre management systems and closures (IEC 61300-2-33)
EN 61300-2-34, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-34: Tests - Resistance to solvents and contaminating fluids of
interconnecting components and closures (IEC 61300-2-34)
EN 61300-2-37, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-37: Tests - Cable bending for fibre optic closures (IEC 61300-2-37)
EN 61300-2-38, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-38: Tests - Sealing for pressurized fibre optic closures (IEC 61300-
2-38)
EN 61300-3-1, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-1: Examinations and measurements - Visual examination (IEC 61300-
3-1)
EN 61300-3-3, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-3: Examinations and measurements - Active monitoring of changes
in attenuation and return loss (IEC 61300-3-3)
EN 61300-3-28, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-28: Examinations and measurements - Transient loss (IEC 61300-3-
28)
EN ISO 4892-3, Plastics - Methods of exposure to laboratory light sources - Part 3: Fluorescent UV
lamps (ISO 4892-3)
7
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SIST EN 50411-2-4:2022
EN 50411-2-4:2021 (E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain
terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
excursion loss
change in optical attenuation during the slow variations of environmental parameters
Note 1 to entry: Excursion loss is the ± deviation from the original value of the transmitted power at the start of
the test.
3.2
fibre management system
FMS
system to control, protect and store splices, connectors, passive optical components and fibres from
incoming to outgoing cables
Note 1 to entry: A fibre management system is intended for installation within a protective housing.
Note 2 to entry: A fibre management system is often called an “organiser”.
[SOURCE: EN IEC 61756-1]
3.3
fibre splice
permanent or separable joint whose purpose is to couple optical power between two optical fibres,
achieved by either a fusion or a mechanical technique
[SOURCE: IEV 731-05-05, modified]
3.4
intervention
gain access to modify, add, remove or repair fibre circuits, splices, connectors or other components
between the incoming and outgoing cables of an existing closure
3.5
installation
all activities and handling operations to establish and install a protective housing including the cables or
by adding new circuits, splices, connectors and other components
3.6
installation conditions
circumstances that must be fulfilled for an installation, which includes; environmental conditions, size
interface between the closure or enclosure and the fibre management system, optical performance,
additional/special conditions and safety requirements
3.7
live fibre
fibre optical circuit that is carrying an optical signal
[SOURCE: EN IEC 61756-1]
8
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SIST EN 50411-2-4:2022
EN 50411-2-4:2021 (E)
3.8
multiple element
ME
physical separation level consisting of more than one single element
Note 1 to entry: This separation level implies fibres from multiple cable elements on one splice tray (also called
mass storage) and constitutes the lowest degree of circuit physical separation.
[SOURCE: EN IEC 61756-1]
3.9
multiple ribbon
MR
multiple element consisting of multiple optical fibres (circuits) arranged in ribbons (fibres in parallel)
which are also arranged (for example, in stacks)
[SOURCE: EN IEC 61756-1]
3.10
optical time domain reflectometer
OTDR
device for characterizing an optical fibre whereby an optical pulse is transmitted through the optical fibre
and the optical power of the resulting light scattered and reflected back to the input is measured as a
function of time
Note 1 to entry: Useful in estimating attenuation coefficient for uniform fibres, and identifying and localizing
defects and localized losses.
[SOURCE: IEV 731-07-08]
3.11
protective housings
all indoor and outdoor housings utilised for the storage, distribution or protection of one or more cable
joints or any passive or active telecom equipment
Note 1 to entry: Examples of protective housings: wall boxes, cabinets, cases, optical distribution frame sub
racks, closures or pedestals. A closure can be either a “sealed closure” or a “free breathing closure”.
Note 2 to entry: The protective housing contains a fibre management system.
[SOURCE: EN IEC 61753-1]
3.12
sealed closure
watertight and dust-tight housing that can hold a varying overpressure or underpressure caused by
temperature changes or atmospheric pressure changes
Note 1 to entry: There is no exchange of air with the outside environment when exposed to temperatures over
the specified operating temperature range.
Note 2 to entry: Although often referred to as hermetic sealed closures, humidity can enter the inner closure by
diffusion.
Note 3 to entry: Completely inner filled housings are also considered to be sealed closures.
[SOURCE: EN IEC 61753-1]
9
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SIST EN 50411-2-4:2022
EN 50411-2-4:2021 (E)
3.13
single circuit
SC
physical fibre separation level where the optical circuit consists of one fibre (single fibre), or more than
one fibre, providing all services for one subscriber
Note 1 to entry: This fibre separation level has the fibre(s) of only one customer on one splice tray. It is the highest
(best) degree of physical circuit separation.
[SOURCE: EN IEC 61756-1]
3.14
single element
SE
physical separation level with a cable subassembly comprising one or more optical fibres inside a
common covering e.g. a tube or inside one groove of a grooved cable (slotted core cable)
Note 1 to entry: A single element provides more than one termination or circuit.
Note 2 to entry: A fibre ribbon is a single element.
Note 3 to entry: This fibre separation level has all fibres from a cable element (e.g. loose tube) on one splice tray.
It is an intermediate degree of physical circuit separation (between single circuit and multiple element).
[SOURCE: EN IEC 61756-1]
3.15
single ribbon
SR
single element designed to carry all fibres of one ribbon
Note 1 to entry: Depending on the fibres deployment’, a single ribbon can contain all the fibres of one circuit
(single circuit) or the fibres of more than one circuit (single element).
[SOURCE: EN IEC 61756-1]
3.16
splice tray
structure that organises and controls storage of fibre splices in an orderly manner, together with the
associated excess uncabled fibre length
Note 1 to entry: It can be a part of a fibre management system.
[SOURCE: EN IEC 61756-1]
3.17
transient loss
short term (ms) reversible change of optical transmission characteristics arising from optical
discontinuity, physical defects and modifications of the attenuation (e.g. bending loss) normally caused
by mechanical stress
[SOURCE: EN 61300-3-28]
10
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SIST EN 50411-2-4:2022
EN 50411-2-4:2021 (E)
3.18
uncut fibre
fibres from a continuous cable with the cable sheath removed over a defined length without cutting the
fibres or tubes
Note 1 to entry: The uncut tubes or fibres are stored e.g. in a space saving loop. When required, the fibres are cut
and spliced or connected.
[SOURCE: EN IEC 61756-1]
4 Description
4.1 Closure housing
An optical fibre closure comprises a sealed closure housing that is attached to the ends of the joined
cable sheaths and a fibre management system for containing and protecting the fibres, splices and other
passive optical devices.
This is not to be confused with an optical fibre closure for blowing cable or fibre. This comprises a
protective housing that allows the interconnection of cable ducts or tubes and is attached to the ends of
the ducts or cables containing empty tubes. However, this document shall be used when air blown fibres
are spliced inside this type of closure.
The design of the closure housing shall allow the jointing of two or more cable ends in the following
configurations or applications:
— Track joint configuration (see Figure 1) used to interconnect at least two cables (example: drop
cable repair closure);
Key
1 cable
2 closure
Figure 1 — Track joint configuration
— Spur joint configuration (see Figure 2) used to split one cable into at least 2 smaller cables;
11
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SIST EN 50411-2-4:2022
EN 50411-2-4:2021 (E)
Key
1 cable
2 closure
Figure 2 — Spur joint configuration
— Distribution joint configuration (see Figure 3) used on customer feed cable with minimum of 6
cable entries (D1), 10 cable entries (D2), 18 cable entries (D3), 34 cable entries (D4) or 66 cable
entries (D5).
Key
1 cable
2 closure
3 uncut fibres
4 drop cable(s)
Figure 3 — Distribution joint configuration
The design of the distribution and spur joint closure housing shall allow the joining together of at least
one pair of cables which are not at the end of a cable section, without cutting all fibres between both
cable openings. This application is generally known as distribution joint or external node, but also called
a mid-span closure or balloon splice.
It is desirable that the closure can be re-opened when necessary without interruption or disturbance of
the traffic of the live circuits.
4.2 Cable seals
Cable entry seal systems can be either, but not limed to:
— Dedicated heat activated heat source, for example, electrical, infrared, hot air or flame
— thermo-shrinkable materials;
— hot melt adhesives;
— polyethylene injection welding.
12
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SIST EN 50411-2-4:2022
EN 50411-2-4:2021 (E)
— Dedicated cold applied
— mastic, tapes, pastes, potting compounds, gels and cold adhesives;
— o-rings, grommets, rubber shapes, pre-expanded tubing are cold processes.
— Combined heat activated and cold applied.
4.3 Fibre management system
The splice closure contains a fibre management system as described in EN IEC 61756-1. The fibre
management system provides means for routing, storing and protecting of fibre splices or other passive
optical devices in a predetermined order, between one cable sheath opening to another.
Fibres may be separated to an appropriate separation level SC, SE, SR, ME or MR. This will limit the
risk of interruption to traffic in those fibres belonging to other groups of circuits.
NOTE The families of fibre management systems covered in this document are listed in Annex C.
5 General requirements
5.1 Materials
All materials that are likely to come in contact with personnel shall meet appropriate health and safety
regulations.
Closure and sealing materials sha
...
SLOVENSKI STANDARD
oSIST prEN 50411-2-4:2018
01-december-2018
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Fibre management systems and protective housings to be used in optical fibre
communication systems - Product specifications - Part 2-4: Sealed dome fibre splice
closures for category S & A
LWL-Spleißkassetten und -Muffen für die Anwendung in LWL-Kommunikationssystemen
- Produktnormen - Teil 2-4: LWL-Muffen Bauart 1 mit abgedichteter Haube für die
Kategorien S und A
Organiseurs et boîtiers de fibres à utiliser dans les systèmes de communication par
fibres optiques - Spécifications de produits - Partie 2-4: Boîtiers à épissure de fibres sous
dôme scellés Type 1, pour catégories S & A
Ta slovenski standard je istoveten z: prEN 50411-2-4:2018
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
oSIST prEN 50411-2-4:2018 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 50411-2-4:2018
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oSIST prEN 50411-2-4:2018
EUROPEAN STANDARD DRAFT
prEN 50411-2-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2018
ICS 33.180.20 Will supersede EN 50411-2-4:2012
English Version
Fibre management systems and protective housings to be used
in optical fibre communication systems - Product specifications -
Part 2-4: Sealed dome fibre splice closures for category S & A
Organiseurs et boîtiers de fibres à utiliser dans les LWL-Spleißkassetten und -Muffen für die Anwendung in
systèmes de communication par fibres optiques - LWL-Kommunikationssystemen - Produktnormen - Teil 2-4:
Spécifications de produits - Partie 2-4: Boîtiers à épissure LWL-Muffen Bauart 1 mit abgedichteter Haube für die
de fibres sous dôme scellés Type 1, pour catégories S & A Kategorien S und A
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2019-01-04.
It has been drawn up by CLC/TC 86BXA.
If this draft becomes a European Standard, CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CENELEC in three official versions (English, French, German).
A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to
the CEN-CENELEC Management Centre has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 66595 Ref. No. prEN 50411-2-4:2018 E
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oSIST prEN 50411-2-4:2018
prEN 50411-2-4:2018 (E)
Contents
European foreword .4
1 Scope .6
1.1 Product definition .6
1.2 Operating environment .6
1.3 Reliability .6
1.4 Quality assurance .6
1.5 Allowed fibre and cable types .6
2 Normative references .6
3 Terms and definitions .8
4 Description . 10
4.1 Closure housing . 10
4.2 Closure overpressure safety . 11
4.3 Cable seals . 11
4.4 Fibre management system . 11
4.5 Materials . 12
4.6 Colour and marking . 12
5 Variants . 12
6 Dimensional requirements . 16
6.1 Dimensions of closures for Multiple Element and Multiple Ribbon fibres . 16
6.2 Dimensions of closures for Single Circuit, Single Element and Single Ribbon . 17
7 Tests . 18
7.1 Sample size . 18
7.2 Test sample preparation . 18
7.3 Test and measurement methods . 20
7.4 Test sequence . 20
7.5 Pass/fail criteria . 20
8 Test report . 20
9 Performance requirements . 20
9.1 Dimensional and marking requirements . 20
9.2 Sealing, optical and visual appearance performance criteria . 21
9.3 Mechanical sealing performance requirements . 23
9.4 Environmental sealing performance requirements . 26
9.5 Mechanical optical performance requirements . 28
9.6 Environmental optical performance requirements . 30
Annex A (normative) Fibre for test sample details . 31
Annex B (normative) Sample size and product sourcing requirements . 32
Annex C (informative) Families of FMS covered in this standard . 34
Annex D (informative) Dimensions of FMS for multiple element and multiple ribbon . 36
Annex E (informative) Dimensions of S type FMS for Single Circuit, Single Element and
Single Ribbon . 37
Bibliography . 39
2
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Figure 1 – Track joint configuration . 10
Figure 2 – Spur joint configuration . 10
Figure 3 – Distribution joint configuration . 10
Figure 4 ― Outline dimensions of M closure . 16
Figure 5 ― Outline dimensions of the S closures . 17
Figure 6 ― Track joint configuration sample . 19
Figure 7 ― Distribution joint configuration sample . 19
Figure D.1 ― Outline dimensions of the M type FMS . 36
Figure E.1 ― Outline dimensions of the S type FMS . 37
Table 1 ― Sealed dome fibre splice closure Type 1, for category S - Variants
EN 50411-2-4 – X – XX – X – XX – XX – X . 12
1 2 3 4 5 6
Table 1a ― SC splice tray and closure selection . 13
Table 1b ― SE splice tray and closure selection . 14
Table 1c ― SR splice tray and closure selection . 14
Table 1d ― ME splice tray and closure selection . 15
Table 1e ― MR splice tray and closure selection . 15
Table 2 ― M closure dimensions . 17
Table 3 ― S closure with SC, SE and SR splice trays . 18
Table 4 ― Sealing, optical and visual appearance performance criteria . 21
Table 5 ― Mechanical sealing performance requirements . 23
Table 6 ― Environmental sealing performance requirements . 26
Table 7 ― Mechanical optical performance requirements . 28
Table 8 ― Environmental optical performance requirements . 30
Table A.1 ― Fibre characteristics . 31
Table B.1 ― Minimum sample size requirements . 32
Table D.1 ― M type FMS – Multiple element and multiple ribbon fibre . 36
Table E.1 ― S type FMS – SC, SE and SR tray dimensions . 38
Table E.2 ― Closures with S type FMS . 38
3
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prEN 50411-2-4:2018 (E)
European foreword
This document (prEN 50411-2-4:2018) has been prepared by CLC/TC 86BXA, “Fibre optic
interconnect, passive and connectorised components”.
This document is currently submitted to the Enquiry.
The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 12 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)
This document will supersede EN 50411-2-4:2012.
prEN 50411-2-4:2018 includes the following significant technical changes with respect to
EN 50411-2-4:2012:
— terms and definitions are added;
— the IEC 61753-1:2007 categories A and S tests and test severities are replaced by the
1)
IEC 61753-1:201X categories A and S tests and test severities;
— maximum single circuit splice capacity of size E closure reduced from 84 splices to 72 splices;
— addition of new test severity of cable retention load for (microduct) tubes and cables without
strength members: Load (N) = 10 * Øcable (mm);
— the test “resistance to shot gun blasts” test is removed.
1)
To be published.
4
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prEN 50411-2-4:2018 (E)
Fibre management systems and protective housings to be used in optical fibre communication systems –
Product specifications
Part 2–4: Sealed dome fibre splice closures for category S and A
Description Performance
Construction: Sealed dome ended Applications:
Cable seals: Heat activated and or cold Optical fibre cable networks
applied
- for underground (IEC 61753-1:201X category S);
Fibre management: Single Circuit, Single Element,
- for aerial (IEC 61753-1:201X category A).
Multiple Element and/or
Single/Multiple Ribbon
Related documents:
EN 60793-2-50 Optical fibres – Part 2–50: Product specifications – Sectional specification for class B single-
mode fibres (IEC 60793-2-50)
EN 60794-2 Optical fibre cables – Part 2: Indoor cables – Sectional specification (IEC 60794-2)
EN 60794-3 Optical fibre cables – Part 3: Sectional specification – Outdoor cables (IEC 60794-3)
1)
EN IEC 61753-1:201X Fibre optic interconnecting devices and passive components performance standard – Part
1: General and guidance for performance standard (IEC 61753-1:201X)
EN 61300 series Fibre optic interconnecting devices and passive components – Basic test and measurement
procedures (IEC 61300 series)
ETS 300 019 Environmental Engineering (EE) - Environmental conditions and environmental tests for
telecommunications equipment
Construction and sizes: Maximum splice capacity depending closure size and
fibre circuit separation level
Size S type FMS M type FMS
Single Single Single Multiple Multiple
Circuit Element Ribbon Element Ribbon
(SC) (SE) (SR) (ME) (MR)
A - - - 72 -
splices
B 12 72 48 96 -
splices splices splices splices
C 24 144 72 144 -
splices splices splices splices
D
48 288 144 576 -
splices splices splices splices
E 72 216 144 - -
splices splices splices
F 144 432 288 - -
splices splices splices
G 192 624 384 - 288
splices splices splices splices
H 240 864 432 - 1 152
splices splices splices splices
5
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1 Scope
1.1 Product definition
This document contains the initial, start of life dimensional, optical, mechanical and environmental
performance requirements of a fully installed splice closure in order for it to be categorized as a
European Standard product.
1.2 Operating environment
The tests selected combined with the severity and duration are representative of an outside plant for
subterranean and/or aerial environments defined by:
1)
EN IEC 61753-1:201X category S: subterranean environment
category A: aerial environment
1.3 Reliability
Whilst the anticipated service life expectancy of the product in this environment is 20 years,
compliance with this specification does not guarantee the reliability of the product. This should be
predicted using a recognized 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 recognized quality assurance programme.
1.5 Allowed fibre and cable types
Although the optical performance tests are carried out on test samples with EN 60793-2-50, B1.3
dispersion unshifted single mode fibre (see Annex A), the closure, once tested according to this
European Standard, will also be suitable for other fibre types, e.g. dispersion shifted, non-zero
dispersion shifted and multi-mode fibres.
This closure standard allows both single mode and multimode fibre to be used and covers all IEC
standard optical fibre cables with their various fibre capacities, types and designs. This includes, but is
not limited to, optical fibre cable standards EN 60794-2 (indoor) and EN 60794-3 (outdoor).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
EN 60793-2-50, Optical fibres — Part 2-50: Product specifications — Sectional specification for class
B single-mode fibres (IEC 60793-2-50)
EN 60794-2, Optical fibre cables - Part 2: Indoor cables - Sectional specification (IEC 60794-2)
EN 60794-3, Optical fibre cables - Part 3: Sectional specification - Outdoor cables
EN 61300-2-1, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-1: Tests - Vibration (sinusoidal)
EN 61300-2-4, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-4: Tests - Fibre/cable retention
6
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EN 61300-2-5, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-5: Tests - Torsion
EN 61300-2-9, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-9: Tests - Shock
EN 61300-2-10, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-10: Tests - Crush resistance
EN 61300-2-11, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-11: Tests - Axial compression
EN 61300-2-12, Fibre optic interconnecting devices and passive components — Basic test and
measurement procedures — Part 2-12: Tests — Impact (IEC 61300-2-12)
EN 61300-2-22, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-22: Tests - Change of temperature
EN 61300-2-23, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-23: Tests - Sealing for non-pressurized closures of fibre optic
devices
EN 61300-2-26, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-26: Tests - Salt mist
EN 61300-2-33, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-33: Tests - Assembly and disassembly of fibre optic mechanical
splices, fibre management systems and closures
EN 61300-2-34, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-34: Tests - Resistance to solvents and contaminating fluids of
interconnecting components and closures
EN 61300-2-37, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-37: Tests - Cable bending for fibre optic closures
EN 61300-2-38, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-38: Tests - Sealing for pressurized fibre optic closures
EN 61300-3-1, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-1: Examinations and measurements - Visual examination
EN 61300-3-3, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-3: Examinations and measurements - Active monitoring of changes
in attenuation and return loss
EN 61300-3-28, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-28: Examinations and measurements - Transient loss
1)
EN IEC 61753-1:201X, Fibre optic interconnecting devices and passive components performance
standard – Part 1: General and guidance for performance standards (IEC 61753-1:201X)
7
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3 Terms and definitions
For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain
terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
fibre management system
FMS
system to control, protect and store splices, connectors, passive optical components and fibres from
incoming to outgoing cables
Note 1 to entry: A fibre management system is intended for installation within a protective housing.
Note 2 to entry: A fibre management system is often called an “organiser”.
[SOURCE: EN IEC 61756-1]
3.2
fibre splice
permanent or separable joint whose purpose is to couple optical power between two optical fibres,
achieved by either a fusion or a mechanical technique
[SOURCE: IEV 731-05-05 modified]
3.3
live fibre
fibre optical circuit that is carrying an optical signal
[SOURCE: EN IEC 61756-1]
3.4
multiple element
ME
physical separation level consisting of more than one single element
Note 1 to entry: This separation level implies fibres from multiple cable elements on one splice tray (also called
mass storage) and constitutes the lowest degree of circuit physical separation.
[SOURCE: EN IEC 61756-1]
3.5
multiple ribbon
MR
as opposed to single ribbon, a multiple element consisting of multiple optical fibres (circuits) arranged
in ribbons (fibres in parallel) in turn arranged e.g. in stacks
[SOURCE: EN IEC 61756-1]
8
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3.6
optical time domain reflectometer
OTDR
device for characterizing an optical fibre whereby an optical pulse is transmitted through the optical
fibre and the optical power of the resulting light scattered and reflected back to the input is measured
as a function of time
Note1 to entry: Useful in estimating attenuation coefficient for uniform fibres, and identifying and localizing defects
and localized losses.
[SOURCE: IEV 731-07-08]
3.7
sealed closure
watertight and dust-tight housing that can hold a varying overpressure or underpressure caused by
temperature changes or atmospheric pressure changes. Complete inner filled housings are also
considered to be sealed closures
Note 1 to entry: There is no exchange of air with the outside environment when exposed to temperatures over the
specified operating temperature range
Note 2 to entry: Although often referred to as hermetic sealed closures, humidity can enter the inner closure by
diffusion
[SOURCE: EN IEC 61753-1]
3.8
single circuit
SC
circuit (fibre) physical separation level where the optical circuit consists of one fibre (single fibre), or
more than one fibre, providing one termination
Note 1 to entry: This separation level foresees only the fibre(s) of one customer per splice tray and constitutes
the highest degree of circuit physical separation.
[SOURCE: EN IEC 61756-1]
3.9
single element
SE
circuit (fibre) physical separation level with a cable subassembly comprising one or more optical fibres
inside a common covering e.g. a tube or inside one groove of a grooved cable (slotted core cable)
Note 1 to entry: A single element provides more than one termination or circuit.
Note 2 to entry: A fibre ribbon is a single element.
Note 3 to entry: This separation level foresees all fibres from a cable element (e.g. a loose tube) per splice tray
and constitutes an intermediate degree of circuit physical separation between single circuit (SC) and multiple
element (ME).
[SOURCE: EN IEC 61756-1]
3.10
single ribbon
SR
single circuit or single element, depending on the fibres’ deployment, designed to carry respectively
one circuit (single circuit) or more circuits (single element)
[SOURCE: EN IEC 61756-1]
9
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4 Description
4.1 Closure housing
An optical fibre closure comprises a sealed closure housing that is attached to the ends of the joined
cable sheaths and a fibre management system for containing and protecting the fibres, splices and
other passive optical devices.
This is not to be confused with an optical fibre closure for blowing cable or fibre. This comprises a
protective housing that allows the interconnection of cable ducts or tubes and is attached to the ends
of the ducts or cables containing empty tubes. However, this document shall be used when air blown
fibres are spliced inside this type of closure.
The design of the closure housing shall allow the jointing of two or more cable ends in the following
configurations or applications:
(T) Track joint configuration used to interconnect at least two cables (example: drop cable repair
closure)
Figure 1 – Track joint configuration
(S) Spur joint configuration used to split one cable into at least 2 smaller cables.
Figure 2 – Spur joint configuration
(D) Distribution joint configuration used on customer feed cable with minimum of 6 cable entries
(D1), 10 cable entries (D2), 18 cable entries (D3), 34 cable entries (D4) or 66 cable entries (D5).
Figure 3 – Distribution joint configuration
10
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The design of the distribution and spur joint closure housing shall allow the joining together of at least
one pair of cables which are not at the end of a cable section, without cutting all fibres between both
cable openings. This application is generally known as distribution joint or external node, but also
called a mid-span closure or balloon splice.
It is desirable that the closure can be re-opened when necessary without interruption or disturbance of
the traffic of the live circuits.
4.2 Closure overpressure safety
Overpressure can build up in sealed closures due to temperature differentials, or due to atmospheric
pressure changes over a period of time, or due to flash testing of the seals after installation, or due to
incorrect installation techniques. Care should be taken when opening a sealed closure. Provisions
shall be made that overpressure is exhausted when opening the closure prior to complete removal of
the cover.
For air blown fibre applications an overpressure release system is required for all sealed closures.
4.3 Cable seals
Cable entry seal systems can be either, but not limed to:
(H) Dedicated heat activated heat source, for example, electrical, infrared, hot air or flame
– thermo-shrinkable materials;
– hot melt adhesives;
– polyethylene injection welding.
(R) Dedicated cold applied
– mastic, tapes, pastes, potting compounds, gels and cold adhesives;
– o-rings, grommets, rubber shapes, pre-expanded tubing are cold processes.
(U) Combined heat activated and cold applied
The fibre management closure allows for a physical housing structure that provides for optical cable
fixing, sealing, anchoring, water and gas blocking, storage and routing up to the input and output fibres
of the fibre management system.
4.4 Fibre management system
The fibre management system pro
...
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