SIST EN 50411-2:2008

SLOVENSKI STANDARD
SIST EN 50411-2:2008
01-oktober-2008
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Fibre organisers and closures to be used in optical fibre communication systems -
Product specifications - Part 2: General and guidance for optical fibre cable joint
closures, protected microduct closures, and microduct connectors
LWL-Spleißkassetten und -Muffen für die Anwendung in LWL-Kommunikationssystemen
- Produktnormen - Teil 2: Allgemeines und Leitfaden für LWL-Kabel-Verbindungsmuffen,
geschützte Röhrchenmuffen und Röhrchenverbindungen
Organiseurs et boîtiers de fibres destinés a etre utilisés dans les systemes de
communication par fibres optiques - Spécifications de produits - Partie 2: Généralités et
lignes directrices relatives aux boîtiers communs aux câbles a fibres optiques, aux
boîtiers a microconduits protégés, et aux connecteurs de microconduits
Ta slovenski standard je istoveten z: EN 50411-2:2008
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
SIST EN 50411-2:2008 en,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN 50411-2

NORME EUROPÉENNE
August 2008
EUROPÄISCHE NORM

ICS 33.180.20


English version


Fibre organisers and closures to be used
in optical fibre communication systems -
Product specifications -
Part 2: General and guidance for optical fibre cable joint closures,
protected microduct closures, and microduct connectors


Organiseurs et boîtiers de fibres destinés LWL-Spleißkassetten und -Muffen
à être utilisés dans les systèmes für die Anwendung in
de communication par fibres optiques - LWL-Kommunikationssystemen -
Spécifications de produits - Produktnormen -
Partie 2: Généralités et lignes directrices Teil 2: Allgemeines und Leitfaden
relatives aux boîtiers communs für LWL-Muffen,
aux câbles à fibres optiques, geschützte Mikrorohrmuffen
aux boîtiers à microconduits protégés, und Mikrorohrverbinder
et aux connecteurs de microconduits



This European Standard was approved by CENELEC on 2008-04-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50411-2:2008 E

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EN 50411-2:2008 - 2 -
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 86BXA, Fibre optic
interconnect, passive and connectorised components.
The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as
EN 50411-2 on 2008-04-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2009-04-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-04-01
__________

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- 3 - EN 50411-2:2008
Fibre organisers and closures to be used in optical fibre communication systems –
Product specifications
Part 2: General and guidance for optical fibre cable joint closures, protected microduct closures,
and microduct connectors

Construction: Applications:


Sealed or non-sealed products covering both
Optical fibre cable networks for underground and/or aerial

a) optical fibre cable splicing FMS or
Non-pressurised
protected microduct closures MCS

or
Sealed closures (only)

b) microduct connectors
EN 61753-1 category; S (subterranean) and A (aerial)

Product specification document options:
Environmental protection requirements:


• temperature extremes;
The closure or connector product specifications
must align with one of the following titles; labelled, • resistance to solvents and contaminating fluids;
EN 50411-2-X: • resistance to water ingress;

• resistance to salt mist.
• sealed dome closures with a FMS;

Mechanical protection requirements:
• sealed pan closures with a FMS;
• vibration;
• sealed inline closures with a FMS;
• closure crush and impact;
• sealed closures for ABF microducts;
• cable entry tension, torsion and bending;
• non-sealed closures for ABF microducts;
• resistance to shotgun fire (aerial only).
• microduct connectors for sealed closures;
• microduct connectors for non-sealed
closures.

Common base configurations:
Closure shape options:

• track joint: configuration used on inline cable, with
• dome, pan, and inline;
minimum of 2 cable entries;
• ‘T’, ‘Y’, and ‘X’.

• spur joint: configuration used on local feeder cable
ABF microduct connector options:

with minimum of 3 cable entries;
• straight;
• distribution joint: configuration used on customer
• straight bulkhead;
feed cable with minimum of 8 cable entries.
• ID reducer/enlarger stem;
• ID reducer/enlarger;
• OD reducer/enlarger stem;
• OD reducer/enlarger;
Fibre Management System options:

• ID and OD reducer/enlarger stem;
SC, SR, SE, ME, MR.

• ID and OD reducer/enlarger;
Optical functionality:
• close down;
Transient losses:
• liquid block;
• liquid block with barb;
≤ 0,5 dB at 1 550 nm and ≤ 1 dB at 1 625 nm per active
• end stop.
circuit during test

Cable seals:
Residual losses:
• heat activated;
≤ 0,1 dB at 1 550 nm and 1 625 nm per active circuit on
• cold applied;
test
• both heat and cold applied.

FMS closure additional requirements:

• future proof – expandable;
• wave length range, 1 260 nm up to
1 650 nm.

Related documents:
EN 61300 series Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures (IEC 61300 series)
EN 61753-1 Fibre optic interconnecting devices and passive components performance standard -
Part 1: General and guidance for performance standards (IEC 61753-1)
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)
EN 60794-5 Optical fibre cables - Part 5: Sectional specification - Microduct cabling for installation
by blowing (IEC 60794-5)
ETSI EN 300 019 series Environmental Engineering (EE) - Environmental conditions and environmental tests
for telecommunications equipment

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EN 50411-2:2008 - 4 -
Contents

1 Scope . 6
1.1 Rules and conventions . 6
1.2 Product definition. 6
1.3 Operating environment . 7
1.4 Reliability . 7
1.5 Quality assurance. 7
1.6 Safety . 7
1.7 FMS closure future proof requirement . 7
1.8 Fibre types and cable designs . 7
1.9 FMS to closure interfaces - Informative information . 7
2 Normative references . 8
3 Definitions and abbreviations . 9
3.1 Definitions . 9
3.2 Abbreviations . 12
4 Closure options defined … . 12
4.1 Closure with FMS housing functionality . 12
4.2 ABF closure housing functionality . 12
4.3 Closure shape options defined . 13
4.4 Product specification options defined. 13
4.5 Common base options defined . 13
4.6 Cable entry seal options . 13
4.7 Fibre management system options defined . 14
4.8 ABF microduct connector options defined . 14
5 Closure options, geometrical forms and dimensioning requirements . 14
5.1 Dome and pan closure geometrical forms . 14
5.2 Inline closure geometrical form . 14
5.3 Air blown microduct geometrical forms . 15
6 Closure with FMS general functional requirements . 16
6.1 Closure with FMS functional parts . 16
6.2 FMS functional parts . 16
6.3 General functional requirements of a closure with FMS . 17
6.4 General functional requirements of the FMS . 17
6.5 FMS - Functional options housed in closures . 17
6.6 FMS splicing to closure interfaces . 17
6.7 FMS optical fibre connector to closure interfaces . 19
6.8 ABF closure interface - Microduct minimum bend radius . 19
7 Closure with ABF microduct connectors general functional requirements . 19
7.1 Air blown fibre systems . 19
7.2 Future proof closures, functional requirements . 20
7.3 All closure outside profile, dimensional conventions . 20
7.4 All microduct connector outside/bulkhead profile, dimensional conventions . 21
8 General product descriptions . .21
8.1 Materials . 21
8.2 Colour and marking . 21
8.3 Environmental, functional requirements . 22
9 Variants layouts - Closure and microduct connector . 22
10 Tests . 24
10.1 Sealed closure sample size . 24
10.2 Sealed closure with FMS test sample preparation . 24
10.3 Closures with FMS optical test sample construction . 24

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- 5 - EN 50411-2:2008
10.4 Closure with FMS test and measurement methods . 25
10.5 Closure with FMS test sequence . 25
10.6 Closure with FMS pass/fail criteria . 25
11 Performance requirements . 26
11.1 Dimensional and marking requirements . 26
11.2 Sealed closure sealing, optical and appearance performance criteria . 26
11.3 Sealed closure environmental and mechanical performance test methods . 27
11.4 Unsealed closure environmental and mechanical performance test methods . 28
11.5 Microduct connector sealing, optical and appearance performance criteria. 29
11.6 Microduct connector - Environment and mechanical performance test methods . 29

Bibliography . 30
Figures
Figure 1 - Dome . 14
Figure 2 - Pan . 14
Figure 3 - Inline closure - End plate type (1a) . 14
Figure 4 - Inline closure - Shell type - Short and fat (2a) . 15
Figure 5 - Inline closure - Shell type - Long and thin (2b) . 15
Figure 6 - Closure Y . 15
Figure 7 - Closure T (single ports) . 15
Figure 8 - Closure T (double ports) . 15
Figure 9 - Closure X . 16
Figure 10 - Closure functional parts diagram . 16
Figure 11 - FMS system functional parts diagram . 16
Figure 12 - Small angled semi-circular, or rectangular tree type organiser . 18
Figure 13 - Large rectangular trays ‘book type’ organiser . 18
Figure 14 - Large circular/rectangular trays - Juke box type organiser . 18
Figure 15 - Small circular/oval/rectangular trays - Shelf type organiser . 18
Figure 16 - Space for cables . 19
Figure 17 - ABF system functional parts diagram - Microduct intercept (only) . 19
Figure 18 - ABF functional parts diagram - Blow from point . 19
Figure 19 - Examples - Future proof closure expansion - Diagram . 20
Figure 20 - Examples - Closure outside profile, dimensioning conventions . 20
Figure 21 - Examples microduct connector outside/bulkhead profile . 21
Figure 22 - Example - Track joint configuration sample . 24
Figure 23 - Example - Distribution joint configuration sample . 25
Tables
Table 1 - Typical variant table layout - Sealed FMS closures (dome, pan and inline)
        EN 50411-2-X – X - X - X - XX - XX - X . 22
1 2 3 4 5 6
Table 2 - Typical closure and tray selection - FMS fibre separation levels . 23
Table 3 - Typical variant table layout - Sealed ABF closures
        EN 50411-2-X – X - X - X - X - XXX - XX - XX - XX . 23
1 2 3 4 5 6 7 8
Table 4 - Typical all ABF closure capacity selection to microduct connector capacity . 23
Table 5 - Typical variant table layout - Microduct connectors - Sealed and non-sealed closures
        EN 50411-2-X – XXX/XXX – XXX/XXX – XX – X . 23
1 2 3 4
Table 6 - Sealed closure sealing, optical and appearance performance criteria . 26
Table 7 - Sealed closure environmental and mechanical performance test methods . 27
Table 8 - Unsealed closure environmental and mechanical performance test methods . 28
Table 9 - Microduct connectors sealing, optical and appearance performance criteria . 29
Table 10 - Microduct connector - Environment and mechanical performance test methods . 29

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EN 50411-2:2008 - 6 -
1 Scope

1.1 Rules and conventions

This general and guidance document provides a framework for new product specification in the series
EN 50411-2-X rules and conventions under which a closure interface is created, and provides a consistent
structure:
• headings;
• format;
• abbreviations;
• definitions;
• references;
• descriptions;
• document structure details;
• tables;
• diagrams;
• dimensions; and
• product variants.

This general and guidance document provides general information that defines the closure options, including
the following:
• level of sealing, sealed or non-sealed;
• closure configurations, shape and/or entry port orientation;
• ‘fibre management system’ or ‘microduct’ connectors contained within the housing;
• cable port entry configurations, number of ports;
• cable sealing method, heat or non-heat activated.

In order to comply with the specification, the following closure and/or FMS requirements must be defined:
• sealing and optical functionality;
• physical dimensioning, giving the maximum outer perimeters for all sizes;
• geometrical form and or shape;
• dimensioning.


1.2 Product definition

A product specification shall contains the initial, start of life dimensional, optical, mechanical and
environmental performance requirements of a fully installed closure in order for it to be categorised as an
EN standard product.

The product specification should provide external overall dimensioning of closures to fit in their external
location, e.g. underground chambers, street furniture or aerial applications.

A fibre splice closure product specification includes both the parameters of the closure housing, the fibre
splicing management system. These systems are always supplied together with the closure as a matched
set including other functional or ancillary parts of an optical node.

An air blown fibre closure product specification includes only the parameters of the closure housing. Air
blown fibre closures are normally supplied without a microduct connector, largely because of uncertainty
over connector method, microduct sizes, quantity and type of connector used.

This closure specification allows single mode fibre to be used, and covers all IEC or EN standards of optical
fibre cables as listed in the normative references with their various fibre, capacities, types and designs.

For convenience the term “cable” in this document may refer to different types of optical fibre cable designs,
including ‘air blown fibre’, ‘protected microduct’, or ‘microduct’.

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- 7 - EN 50411-2:2008
1.3 Operating environment
All tests for closures combined with the severity and duration, and are representative of an outside plant for
subterranean and/or aerial environments 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.

1.4 Reliability

Whilst the anticipated service life expectancy of the closure in this environment is at least 20 years,
compliance with this a product specification does not guarantee the reliability of the product. This should be
predicted using a recognised reliability assessment programme.

1.5 Quality assurance

Compliance with product specifications does not guarantee the manufacturing consistency of the product.
This should be maintained using a recognised quality assurance programme.

1.6 Safety

All closures to be supplied free of sharp edges or pointed projections that can harm the installation operator.
Materials, which are likely to come into contact with personnel, shall be non-toxic and shall not be a potential
health or environmental hazard.

For all air blown micro-duct system contained within sealed closures, the closures must be fitted with an over
pressure safety system.

In addition for subterranean closure applications or applications where a high level of contamination is
expected provision should be taken to ensure that the over pressure safety system is functional.

In choosing the over pressure air safety system, attention should be given to the following:
• blow off pressure setting – accuracy and repeatability;
• the size of micro-ducts likely to fail, ensuring that the safety valve has adequate area to exhaust fast
enough without building up a high back pressure;
• metallic corrosion and its effect on the operation;
• if a valve is used it should never be used as an electrical grounding connection.

1.7 FMS closure future proof requirement

Conventional optical fibre cables splicing organiser with closure, must in service be capable of being
expanded to increase fibre splicing capacity at some future point in time (additional trays).

1.8 Fibre types and cable designs

This closure standard must allow single mode fibres to be used and covers all IEC or EN standards for
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), EN 60794-3 (outdoor) and EN 60794-5 (microduct
cabling).

1.9 FMS to closure interfaces – Informative information
A FMS system consists of a set of grouped splice trays or organiser. They often dictate the shape and future
proof features of a closure. Therefore, splice trays or organiser information found in Clause 8 is contained
within a standard and is recommended that it is contained in each closure with FMS product specification, as
an informative annex.

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EN 50411-2:2008 - 8 -
2 Normative references

The following referenced documents are indispensable for the application 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 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)
EN 60794-1-2 Optical fibre cables - Part 1-2: Generic specification - Basic optical cable test procedures
(IEC 60794-1-2)
EN 60794-5 Optical fibre cables - Part 5: Sectional specification - Microduct cabling for installation by
blowing (IEC 60794-5)
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 Part 2-4: Tests - Fibre/cable retention (IEC 61300-2-4)
EN 61300-2-5 Part 2-5: Tests - Torsion/twist (IEC 61300-2-5)
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 61300-2-12 Part 2-12: Tests - Impact (IEC 61300-2-12)
EN 61300-2-22 Part 2-22: Tests - Change of temperature (IEC 61300-2-22)
EN 61300-2-23 Part 2-23: Tests - Sealing for non-pressurized closures of fibre optic devices
(IEC 61300-2-23)
EN 61300-2-26 Part 2-26: Tests - Salt mist (IEC 61300-2-26)
EN 61300-2-33 Part 2-33: Tests - Assembly and disassembly of closures (IEC 61300-2-33)
EN 61300-2-34 Part 2-34: Tests - Resistance to solvents and contaminating fluids (IEC 61300-2-34)
EN 61300-2-37 Part 2-37: Tests - Cable bending for closures (IEC 61300-2-37)
EN 61300-2-38 Part 2-38: Tests - Sealing for pressurized closures of fibre optic devices
(IEC 61300-2-38)
EN 61300-3-1 Part 3-1: Examinations and measurements - Visual examination (IEC 61300-3-1)
EN 61300-3-3 Part 3-3: Examinations and measurements - Active monitoring of changes in attenuation
and return loss (IEC 61300-3-3)
EN 61300-3-28 Part 3-28: Examinations and measurements - Transient loss (IEC 61300-3-28)
EN 61753-1 Fibre optic interconnecting devices and passive components performance standard -
Part 1: General and guidance for performance standards (IEC 61753-1)
EN 187105 Single mod
...