SIST EN 50411-3-4:2019
(Main)Fibre management systems and protective housings to be used in optical fibre communication systems - Product specifications - Part 3-4: Wall box for splice to patchcord connections, for category C and A
Fibre management systems and protective housings to be used in optical fibre communication systems - Product specifications - Part 3-4: Wall box for splice to patchcord connections, for category C and A
1.1 Product definition
This European Standard contains the dimensional, optical, mechanical and environmental performance requirements of a fully installed optical fibre wall box, in order for it to be categorized as an EN standard product.
The typical configuration is splicing of incoming fibres to optional splitters and/or to pigtails, connecting pigtails plugs on one side to patchcord plugs on the other side, using adapters.
A wall box is a protective housing containing a fibre management system with splice trays of various fibre separation levels and connector mounting plates. The wall box may contain one or more of the following:
storage and routing of fibre and cable;
- uncut fibre cable storage;
- splice trays;
- adaptors and connectors;
- passive optical devices (optical splitters or WDM).
A wall box can be installed on a vertical indoor or outdoor surface above ground level. If the wall box is required to be relocatable with cables attached, the following additional tests shall be performed:
- cable bending;
- cable torsion.
This document specifies the number of splice trays and splice/connector capacity for each fibre separation level. The maximum capacity is 144 connectors and splice. For housings with a higher number of splices and connectors the document prEN 50411 4 1 (Cabinets) should be used.
Wall boxes for fibre splices only are covered in EN 50411 3 1:2012.
1.2 Operating environment
The tests selected, combined with the severity and duration, and are representative of indoor and outside plant for above ground environments defined by:
EN 61753 1 Ed2 (20xx):
- category C: Controlled (indoor) environment;
- category A: Aerial (above ground) environment.
1.3 Reliability
Whilst the anticipated service life expectancy of the product in this environment is 20 years, compliance with this European Standard 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 European Standard 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
This wall box standard accommodates EN 60793 2 50 single-mode fibres and EN 60793 2 10 A1a and A1b multimode fibres and all EN 60794 series optical fibre cables with various fibre capacities, types and designs as long as fitting in the cabinet does not contravene the fibre or cable minimum bend radius.
LWL-Spleißkassetten und -Muffen für die Anwendung in LWL-Kommunikationssystemen – Produktnorm – Teil 3-4: Fasermanagementsysteme, Wandkasten für Spleiß-Patchkabel-Verbindungen, für die Kategorie C und A
1.1 Produktdefinition
Diese Europäische Norm enthält die maßbezogenen, optischen, mechanischen und umgebungsbezogenen
Anforderungen an das Betriebsverhalten eines vollständig installierten, an Wand oder Mast zu montierenden
Lichtwellenleiter-Verteilergehäuses, um dieses Produkt als ein Europäisches Normprodukt einstufen zu
können.
Die typische Konfiguration ist das Spleißen ankommender Fasern an optionale LWL-Verteiler und/oder
Anschlussfasern, wobei Anschlussfaser-Stecker an einer Seite mit Patchkabel-Steckern an der anderen Seite
unter Verwendung von Adaptern verbunden werden.
Ein Verteilergehäuse ist ein Schutzgehäuse, das ein Fasermanagementsystem, Spleißkassetten mit
unterschiedlichen Fasertrennungsebenen und Steckverbinder-Montageplatten enthält. Das Verteilergehäuse
kann ein oder mehrere der folgenden Teile enthalten:
– Ablage und Führung für Fasern und Kabel;
– Ablage für ungeschnittene Glasfaserkabel;
– Spleißkassetten;
– Adapter und Steckverbinder;
– passive optische Bauteile (optische Verteiler oder WDM).
Ein Verteilergehäuse kann oberirdisch an einer vertikalen Fläche in Innenräumen oder im Freien installiert
werden. Wenn es erforderlich ist, das Verteilergehäuse mit gesteckten Kabeln versetzen zu können, werden
folgende zusätzliche Prüfungen durchgeführt:
– Kabelbiegung;
– Kabeltorsion.
Dieses Dokument legt die Anzahl von Spleißkassetten und das Fassungsvermögen für Spleiße/Steckverbinder
für jede Fasertrennebene fest. Das größte Fassungsvermögen beträgt 144 Steckverbinder und
Spleiße. Für Gehäuse mit einer größeren Anzahl von Spleißen und Steckverbindern kann EN 50411-4-1
(Straßenschränke) verwendet werden.
Verteilergehäuse ausschließlich für Spleiße werden in EN 50411-3-1 behandelt.
1.2 Betriebsumgebung
Die ausgewählten Prüfungen, zusammen mit Schärfegrad und Dauer, sind repräsentativ für oberirdische
Innen- und Außenanlagen, die definiert sind durch EN IEC 61753-1:
– Kategorie C: Kontrollierte Umgebung (innen);
– Kategorie A: Luftumgebung (oberirdisch).
1.3 Zuverlässigkeit
Obwohl die erwartete Betriebsdauer des Produkts in dieser Umgebung 20 Jahre beträgt, garantiert die
Übereinstimmung mit dieser Norm nicht die Zuverlässigkeit des Produkts. Diese kann anhand eines
anerkannten Zuverlässigkeitsbewertungsprogramms vorausberechnet werden.
1.4 Qualitätssicherung
Übereinstimmung mit dieser Norm garantiert nicht die Herstellungsbeschaffenheit des Produkts. Diese kann
durch ein anerkanntes Qualitätssicherungsprogramm aufrechterhalten werden.
EN 50411-3-4:2019 (D)
7
1.5 Zulässige Faser- und Kabeltypen
Diese Verteilergehäusenorm umfasst Einmodenfasern nach EN IEC 60793-2-50 und Mehrmodenfasern
A1-OM2 bis A1-OM5 und A1-OM1 nach EN 60793-2-10 sowie alle Lichtwellenleiterkabel der Reihe
EN 60794 mit verschiedenen Faserfassungsvermögen, Typen und Konstruktionen.
Organiseurs et boîtiers de fibres à utiliser dans les systèmes de communication par fibres optiques - Spécifications de produits - Partie 3-4:Système de gestion de fibres, boîte murale pour connexion entre épissures et cordons de brassage, pour les catégories C et A
1.1 Définition de produit
La présente Norme européenne contient les exigences de performances dimensionnelles, optiques, mécaniques et environnementales applicables à une boîte murale pour fibres optiques complètement installée afin d'être classée comme un produit conforme à une Norme européenne.
La configuration typique est l'épissurage de fibres entrantes sur des fibres amorces et/ou sur des séparateurs facultatifs, la connexion de fiches de fibres amorces d'un côté sur des fiches de cordons de brassage de l'autre côté, en utilisant des raccords.
Une boîte murale est une enveloppe de protection qui contient un système de gestion des fibres avec des plateaux d'épissures de différents niveaux de séparation de fibres et des plaques de montage des connecteurs. La boîte murale peut contenir un ou plusieurs des éléments suivants:
- élément pour le stockage et le cheminement des fibres et des câbles;
- élément pour le stockage de câbles à fibres non découpés;
- plateau d'épissures;
- raccords et connecteurs;
- dispositifs optiques passifs (séparateurs optiques ou multiplexeurs par répartition en longueurs d'onde (WDM)).
Une boîte murale peut être installée sur une surface verticale à l'intérieur ou à l'extérieur au-dessus du niveau du sol. S'il est exigé que la boîte murale soit repositionnable avec des câbles fixés, les essais supplémentaires suivants doivent être réalisés:
- courbure de câble;
- torsion de câble.
Le présent document spécifie le nombre de plateaux d'épissures et la capacité d'épissures/de connecteurs pour chaque niveau de séparation de fibres. La capacité maximale est 144 connecteurs et épissures. Il convient d'utiliser la norme prEN 50411-4-1 (armoires) pour les enveloppes avec un nombre plus élevé d'épissures et de connecteurs.
Les boîtes murales pour épissures de fibres sont couvertes par la norme EN 50411-3-1:2012.
1.2 Environnement de fonctionnement
Les essais sélectionnés combinés aux sévérités et aux durées sont représentatifs d'une installation intérieure et extérieure pour des environnements au-dessus du niveau du sol définis par la norme:
EN 61753-1 Ed2 (20xx):
- catégorie C: Environnement contrôlé (intérieur)
- catégorie A: Environnement aérien (au-dessus du sol)
1.3 Fiabilité
Bien que l'espérance de vie en service anticipée du produit dans cet environnement soit de 20 ans, la conformité à la présente Norme européenne ne garantit pas la fiabilité du produit. Il convient que celle-ci soit prédite en utilisant un programme reconnu d'évaluation de la fiabilité.
1.4 Assurance de la qualité
La conformité à la présente Norme européenne ne garantit pas la cohérence de fabrication du produit. Il convient qu'elle soit maintenue en utilisant un programme reconnu d'assurance de la qualité.
1.5 Types de fibres et câbles autorisés
La présente norme applicable aux boîtes murales concerne les fibres unimodales conformes à l'EN 60793-2-50, les fibres multimodales conformes à l'EN 60793-2-10 A1a et A1b et tous les câbles à fibres optiques des séries EN 60794 avec différentes capacités de fibres, différents types et différentes conceptions tant que l'installation dans l'armoire ne remet pas en cause le rayon de courbure minimal de la fibre ou du câble.
Sistemi za upravljanje z optičnimi vlakni in zaščitna ohišja za optične komunikacijske sisteme - Specifikacije izdelka - 3-4. del: Stenska omarica za povezavo s priključki "patch cord" za kategoriji C in A
1.1 Opredelitev izdelka
Ta evropski standard vsebuje dimenzijske, optične, mehanske in okoljske funkcionalne zahteve, ki jih mora izpolnjevati v celoti nameščena stenska omarica z optičnimi vlakni, da se lahko kategorizira kot izdelek v skladu s standardom EN.
Tipična konfiguracija je spajanje vhodnih vlaken v izbirne delilnike oziroma zaključne kable, priključne vtiče za zaključne kable na eni strani do stikalnih kablov in na drugi strani z adapterji.
Stenska omarica je zaščitno ohišje, ki vsebuje sistem za upravljanje optičnih elementov s pladnjem s spojnicami z različnimi ravnmi ločevanja vlaken in ploščami za namestitev konektorjev. Stenska omarica lahko vsebuje eno ali več naslednjih stvari:
– shrambo in traso za vlakna in kable;
– shrambo kablov za nerezana vlakna;
– pladnje s spojnicami;
– adapterje in konektorje;
– pasivne optične naprave (optični delilniki ali WDM).
Stensko omarico je mogoče namestiti na navpično notranjo ali zunanjo površino nad tlemi. Če mora biti stenska omarica premična s priključenimi kabli, je treba opraviti naslednja dodatna preskusa:
– upogibanje kablov;
– torzija kablov.
Ta dokument določa število pladnjev s spojnicami in zmogljivosti spojev/konektorjev za vsako raven ločevanja vlaken. Največja zmogljivost je 144 konektorjev in spojnic. Za ohišja z večjim številom spojnic in konektorjev naj se uporablja dokument prEN 50411-4-1 (omarice).
Stenske omarice za optične spojnice so zajete le v standardu EN 50411-3-1:2012.
1.2 Delovno okolje
Izbrani preskusi skupaj z zahtevnostjo in trajanjem predstavljajo notranji in zunanji obrat za okolja nad tlemi, kot so določena v standardu:
EN 61753 1 Ed2 (20xx):
– kategorija C: nadzorovano (notranje) okolje;
– kategorija A: zračno okolje (nad tlemi).
1.3 Zanesljivost
Medtem ko znaša pričakovana tehnična življenjska doba izdelka v tem okolju 20 let, skladnost s tem evropskim standardom ne zagotavlja zanesljivosti izdelka. To naj bi napovedali v okviru priznanega programa za oceno zanesljivosti.
1.4 Zagotavljanje kakovosti
Skladnost s tem evropskim standardom ne zagotavlja doslednosti izdelave izdelka. To naj bi vzdrževali v okviru priznanega programa za zagotavljanje kakovosti.
1.5 Dovoljeni tipi vlaken in kablov
Ta standard za stenske omarice usklajuje standard EN 60793-2-50 za enorodna vlakna ter standarda EN 60793-2-10 A1a in A1b za večrodna vlakna ter vse skupine standardov EN 60794 za kable iz optičnih vlaken različnih zmogljivosti, vrst in izvedb vlaken, dokler namestitev omarice ne posega v najmanjši polmer upogibanja vlaken ali kablov.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 50411-3-4:2019
01-september-2019
Sistemi za upravljanje z optičnimi vlakni in zaščitna ohišja za optične
komunikacijske sisteme - Specifikacije izdelka - 3-4. del: Stenska omarica za
povezavo s priključki "patch cord" za kategoriji C in A
Fibre management systems and protective housings to be used in optical fibre
communication systems - Product specifications - Part 3-4: Wall box for splice to
patchcord connections, for category C and A
LWL-Spleißkassetten und -Muffen für die Anwendung in LWL-Kommunikationssystemen
– Produktnorm – Teil 3-4: Fasermanagementsysteme, Wandkasten für Spleiß-
Patchkabel-Verbindungen, für die Kategorie C und A
Organiseurs et boîtiers de fibres à utiliser dans les systèmes de communication par
fibres optiques - Spécifications de produits - Partie 3-4:Système de gestion de fibres,
boîte murale pour connexion entre épissures et cordons de brassage, pour les
catégories C et A
Ta slovenski standard je istoveten z: EN 50411-3-4:2019
ICS:
31.240 Mehanske konstrukcije za Mechanical structures for
elektronsko opremo electronic equipment
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
SIST EN 50411-3-4:2019 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 50411-3-4:2019
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SIST EN 50411-3-4:2019
EUROPEAN STANDARD EN 50411-3-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2019
ICS 33.180.20
English Version
Fibre management systems and protective housings to be used
in optical fibre communication systems - Product specifications -
Part 3-4: Wall box for splice to patchcord connections, for
category C and 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 - Produktnorm - Teil 3-4:
Spécifications de produits - Partie 3-4:Système de gestion Fasermanagementsysteme, Wandkasten für Spleiß-
de fibres, boîte murale pour connexion entre épissures et Patchkabel-Verbindungen, für die Kategorie C und A
cordons de brassage, pour les catégories C et A
This European Standard was approved by CENELEC on 2019-05-20. 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
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50411-3-4:2019 E
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SIST EN 50411-3-4:2019
EN 50411-3-4:2019 (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 .7
2 Normative references .7
3 Terms and definitions .8
4 Abbreviations . 11
5 Description . 11
5.1 Functions and configurations . 11
5.2 Cable seals . 14
5.3 Cable anchoring . 15
5.4 Fibre management system . 15
5.5 Patchcords and pigtails . 15
5.6 Adapters . 15
5.7 Passive optical components . 15
5.8 Materials . 16
5.9 Marking and identification . 16
6 Variants . 16
7 Dimensional requirements. 19
8 Tests . 20
8.1 Sample size . 20
8.2 Test sample preparation . 20
8.2.1 Fibre type for test samples . 20
8.2.2 Sealing performance test samples for boxes . 20
8.2.3 Optical performance test samples for boxes . 20
8.3 Test and measurement methods . 24
8.4 Test sequence . 24
8.5 Pass/fail criteria . 24
9 Test report . 24
10 Performance requirements . 24
10.1 Dimensional and marking requirements . 24
10.2 Sealing, optical and appearance performance criteria . 25
10.3 Mechanical sealing performance requirements. 26
10.4 Environmental sealing performance requirements . 28
10.5 Mechanical optical performance requirements. 29
10.6 Environmental optical performance requirements . 31
10.7 Material requirements . 32
Annex A (informative) Fibre details for the test sample . 33
Annex B (informative) Sample size requirements . 34
2
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SIST EN 50411-3-4:2019
EN 50411-3-4:2019 (E)
Annex C (informative) Families of fibre management systems covered in this standard . 36
Annex D (informative) Dimensions of M type FMS for multiple elements and multiple ribbon . 38
Annex E (informative) Dimensions of S type FMS for single circuit, single element and single
ribbon. 39
Annex F (informative) Adapter, plug and cable assembly connector dimensions . 41
Bibliography . 42
3
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SIST EN 50411-3-4:2019
EN 50411-3-4:2019 (E)
European foreword
This document (EN 50411-3-4:2019) 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) 2020-05-20
implemented at national level by publication of an
identical national standard or by endorsement
• latest date by which the national standards (dow) 2022-05-20
conflicting with this document have to be withdrawn
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.
4
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SIST EN 50411-3-4:2019
EN 50411-3-4:2019 (E)
Fibre management systems and protective housings to be used in optical fibre communication
systems – Product specifications -
Part 3–4: Wall or pole mounted box for splice to patchcord connections, for categories C and A
Description Typical installation configuration Typical mounting options
Vertical wall (external or internal)
Pole or wall mounted (above ground)
Wall or pole mounted box Fibre distribution box
Inside street furniture (cabinet or
pedestals)
Typical fibre management configurations
Operating service environments
Applications:
EN IEC 61753-1 category C
Optical fibre cable networks. For indoor
EN IEC 61753-1 category A
and for external above ground applications
Modular adapter plates for the following connectors
Connector type Adapter size Standard
SC Simplex or duplex EN 61754-4
LC Simplex or duplex EN 61754-20
LF3 Simplex or duplex EN 61754-13
LSH Simplex or duplex EN 61754-15
MPO Simplex EN 61754-7
Fibre separation levels in Fibre Management System
Single circuit (1, 2 or 4 fibre splices per
tray),
Single ribbon (1 ribbon splice per tray),
Single element (6, 8 or 12 fibre splices per
tray),
Multiple ribbon (up to 12 ribbon splices per tray)
Multiple element (up to 144 fibre splices
per tray)
Box sizes and dimensions
Box sizes: 4, 8, 12, 24, 48, 72, 120 and 144 patchcord connections
Box Patchcord Width Height Depth
sizes connections (mm) (mm) (mm)
A 4 170 300 50
B 8 280 450 100
C 12 280 450 100
D 24 465 450 225
E 48 465 500 225
F 72 465 550 225
G 120 465 600 225
H 144 465 650 225
NOTE Cables and patchcords enter the box from underneath.
5
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SIST EN 50411-3-4:2019
EN 50411-3-4:2019 (E)
1 Scope
1.1 Product definition
This document contains the dimensional, optical, mechanical and environmental performance
requirements of a fully installed optical fibre wall or pole mounted box, in order for it to be categorized
as a European Standard product.
The typical configuration is splicing of incoming fibres to optional splitters and/or to pigtails, connecting
pigtail plugs on one side to patchcord plugs on the other side, using adapters.
A box is a protective housing containing a fibre management system with splice trays of various fibre
separation levels and connector mounting plates. The box may contain one or more of the following:
— storage and routing for fibre and cable;
— uncut fibre cable storage;
— splice trays;
— adapters and connectors;
— passive optical devices (optical splitters or WDM).
A box can be installed on a vertical indoor or outdoor surface above ground level. If the box is required
to be relocatable with cables attached, the following additional tests are performed:
— cable bending;
— cable torsion.
This document specifies the number of splice trays and splice/connector capacity for each fibre
separation level. The maximum capacity is 144 connectors and splices. For housings with a higher
number of splices and connectors, EN 50411-4-1 (street cabinets) can be used.
Boxes for fibre splices only are covered in EN 50411-3-1.
1.2 Operating environment
The tests selected, combined with the severity and duration, are representative of indoor and outside
plants for above ground environments defined by EN IEC 61753-1:
— category C: Controlled (indoor) environment;
— category A: Aerial (above ground) environment.
1.3 Reliability
Whilst the anticipated service life expectancy of the product in this environment is 20 years, compliance
with this document does not guarantee the reliability of the product. This can be predicted using a
recognized reliability assessment programme.
1.4 Quality assurance
Compliance with this document does not guarantee the manufacturing consistency of the product. This
can be maintained using a recognized quality assurance programme.
6
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SIST EN 50411-3-4:2019
EN 50411-3-4:2019 (E)
1.5 Allowed fibre and cable types
This box standard accommodates EN IEC 60793-2-50 singlemode fibres and EN 60793-2-10 A1-OM2
to A1-OM5 and A1-OM1 multimode fibres and all EN 60794 series optical fibre cables with various fibre
capacities, types and designs.
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 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529)
EN 60695-11-10, Fire hazard testing - Part 11-10: Test flames - 50 W horizontal and vertical flame test
methods (IEC 60695-11-10)
EN 60754-1, Test on gases evolved during combustion of materials from cables - Part 1: Determination
of the halogen acid gas content (IEC 60754-1)
EN 60793-2-10, Optical fibres - Part 2-10: Product specifications - Sectional specification for category
A1 multimode fibres (IEC 60793-2-10) (IEC 60793-2-10)
EN IEC 60793-2-50, Optical fibres - Part 2-50: Product specifications - Sectional specification for class
B singlemode fibres (IEC 60793-2-50)
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 61300-2-4, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-4: Tests - Fibre/cable retention (IEC 61300-2-4)
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 61300-2-12, 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 61300-2-26, 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 61300-3-1, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-1: Examinations and measurements - Visual examination (IEC
61300-3-1)
7
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SIST EN 50411-3-4:2019
EN 50411-3-4:2019 (E)
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 IEC 61753-1, Fibre optic interconnecting devices and passive components performance standard –
Part 1: General and guidance for performance standards (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)
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
live fibre or active fibre
fibre in an optical circuit or node that is carrying an optical signal
3.2
adapter
component in which two or more ferrules are aligned
Note 1 to entry: A ferrule is the fibre holding component part of the optical fibre connector plug
3.3
box
free breathing protective housing that is permanently attached to a vertical wall or pole
Note 1 to entry: A box is not specifically designed to allow cable movement (e.g. torsion, bending) at the cable ports
during operation.
3.4
cable element
grouping of fibres in the cable sheath
3.5
fan-out
passive optical component providing a transition between a single ribbon or single element into
individual fibres
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3.6
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 systems is often called an “organiser”.
3.7
free breathing housing
protective housing that allows a free exchange of air with the environment
Note 1 to entry: Limited water ingress and/or limited dust ingress is possible. Free breathing housings are not
intended for use in areas that are subject to flooding or water immersion. Free breathing closures are used in aerial
environments for the interconnection of cables.
Note 2 to entry: A free breathing closure may look like a sealed closure, but it is not designed to hold a varying
overpressure or underpressure caused by temperature changes or atmospheric pressure changes.
3.8
microduct
small, flexible lightweight tube with an outer diameter between 3 mm and 16 mm
3.9
multiple element
ME
physical fibre separation level consisting of more than one single element
Note 1 to entry: This separation level has fibres from multiple cable elements on one splice tray and is also called
mass storage. It is the lowest (worst) degree of physical circuit separation.
3.10
multiple ribbon
MR
multiple element consisting of multiple optical fibres (circuits) arranged in ribbons (fibres in parallel)
which are arranged e.g. in stacks
3.11
optical fibre connector
component normally attached to a cable or piece of apparatus for the purpose of providing
interconnection and disconnection of fibre optic cables
Note 1 to entry: The interconnection usually consists of two plugs mated together in an adapter or 1 plug mated in
a socket.
3.12
passive optical component
optical component or assembly which does not require any source of energy for its operation other than
optical input signals, or controls the dynamic or static characteristics of optical signals using a source of
energy
Note 1 to entry: A passive optical component never generates an optical gain of signal power.
Note 2 to entry: Examples include optical attenuators and passive branching devices.
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3.13
patchcord
length of optical fibre or cable, permanently terminated at both ends with a plug
3.14
pigtail
length of optical fibre or cable, permanently terminated at one end with a plug
3.15
protective housings
indoor and outdoor housings utilised for the storage, distribution or protection of one or more cable joints
or 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: a protective housing contains a fibre management system
3.16
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. Single circuit minimizes the disturbance of operating circuits when
accessing any adjacent circuit.
3.17
single element
SE
physical fibre separation level in the cable subassembly comprising one or more optical fibres inside a
common covering e.g. in a tube or inside one groove of a grooved cable (slotted core cable)
Note 1 to entry: A single element provides services to more than one subscriber.
Note 2 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).
3.18
single ribbon
SR
physical fibre separation level with all fibres grouped in 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).
3.19
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: A splice tray is a part of a fibre management system.
3.20
transient loss
short term (milliseconds) reversible change of optical transmission characteristics arising from optical
discontinuity, physical defects and modifications of the attenuation (e.g. from bend loss) normally caused
by mechanical stress
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3.21
uncut fibre
fibres from a continuous cable with the cable sheath removed over a defined length
Note 1 to entry: Uncut fibres typically comprise a section of cable where the cable sheath has been removed and
the cable tubes or uncut fibres are cleaned as for installation. These uncut tubes or fibres are then stored, usually
inside a protective housing, in a loop. When required the fibres or tubes are then cut and the fibres connected or
spliced.
4 Abbreviations
For the purposes of this document, the following abbreviations apply.
FMS Fibre Management System
FTTH Fibre to the Home
ME Multiple Element
MR Multiple Ribbon
NA Not applicable
OD Outside Diameter
SC Single Circuit
SE Single Element
SR Single Ribbon
WDM Wavelength Division Multiplexer
5 Description
5.1 Functions and configurations
An optical fibre box is a housing that is attached to a wall or pole and contains the ends of the terminated
cable or microduct. The design of the box shall allow the interconnection of cable ends or fibre units.
A box has a means of containing and protecting the fibres, splices, connectors, and other passive optical
devices.
A box used for blown cabling contains an area where the ends of the microducts or the protected
microducts, which may be terminated with water and gas blocking, are placed.
The design of the box may 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 or balloon splice box.
A box shall be able to be re-opened without interruption or disturbance of the traffic of the live circuits
within the box.
The main fibre management configurations of the optical fibre distribution boxes in this specification are
given in Figure 1.
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Figure 1 — Fibre management configurations in distribution box
Alternative configurations are shown in Figures 2, 3 and 4, but in these cases the splice or patchcord
connection capacity is not optimal. For the following applications, other products will be more relevant:
1) Direct splice applications:
These configurations are covered by EN 50411-3-1, but they can also be achieved using the
product described in this specification.
Figure 2 — Direct splice configurations
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2) Interconnect application:
The box may be equipped with more splice trays than necessary for typical applications and so it
can be used for optical application as shown in Figure 3. This configuration is not within the scope
of this standard but it can also be achieved using the products described in this specification. For
larger fibre count optical interconnect applications as shown in Figure 3, street cabinets described
in EN 50411-4-1 are considered more appropriate.
Figure 3 — Optical interconnect configuration
3) Cross-connect application:
Only a limited amount of cable overlength can be stored inside a box due to its compact size. For
larger fibre counts optical cross connect applications as shown in Figure 4, street cabinets
described in EN 50411-4-1 are considered more appropriate.
Figure 4 — Optical cross-connect configuration
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5.2 Cable seals
For environmental category A the cable entry or exit ports in the box shall have a sealing and attachment
system that can be:
a) Heat activated by a heat source, for example, electrical, infrared, hot air or flame:
– thermo-shrinkable materials;
– hot melt adhesives;
– polyethylene injection welding;
b) Cold applied:
– mastic, tapes, pastes, potting compounds, gels and cold adhesives;
– o-rings, grommets, rubber shapes, pre-expanded tubing;
c) Combination of heat activated and cold applied.
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5.3 Cable anchoring
The outer cable sheath and central strength members shall be attached to the hardware of the box. The
cable anchoring shall not be disturbed when adding or removing cables. Small diameter drop cables,
cords or microduct tubes are typically attached by mechanical clamping on the outer cable sheath. The
design of the cable clamps shall not cause any optical performance degradation of the cables.
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