EN 50411-2-2:2007

SLOVENSKI STANDARD
01-september-2007
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Fibre organisers and closures to be used in optical fibre communication systems -
Product specifications -- Part 2-2: Sealed pan fibre splice closures Type 1, for category S
& A
LWL-Spleißkassetten und -Muffen für die Anwendung in LWL-Kommunikationssystemen
- Produktnorm - Teil 2-2: LWL-Muffen Bauart 1 mit abgedichteter Schale für die
Kategorien S und A
Organiseurs et boîtiers de fibres a utiliser dans les systemes de communication par
fibres optiques - Spécifications de produits -- Partie 2-2: Boîtiers a épissure de fibres
dans un support fermé Type 1, pour catégories S & A
Ta slovenski standard je istoveten z: EN 50411-2-2:2007
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50411-2-2
NORME EUROPÉENNE
March 2007
EUROPÄISCHE NORM
ICS 33.180.20
English version
Fibre organisers and closures
to be used in optical fibre communication systems -
Product specifications -
Part 2-2: Sealed pan fibre splice closures Type 1,
for category S & A
Organiseurs et boîtiers de fibres  LWL-Spleißkassetten und -Muffen
à utiliser dans les systèmes für die Anwendung in LWL-
de communication par fibres optiques - Kommunikationssystemen -
Spécifications de produits - Produktnorm -
Partie 2-2: Boîtiers à épissure Teil 2-2: LWL-Muffen Bauart 1
de fibres dans un support fermé Type 1, mit abgedichteter Schale
pour catégories S & A für die Kategorien S und A

This European Standard was approved by CENELEC on 2006-10-01. 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

© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50411-2-2:2007 E
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 50411-2-2 on 2006-10-01.
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) 2007-10-01
– latest date by which the national standards conflicting
(dow) 2009-10-01
with the EN have to be withdrawn
__________
– 3 – EN 50411-2-2:2007
Fibre Organisers and closures to be used in optical fibre communication systems – Product specifications
Part 2-2: Sealed pan fibre splice Closure
s Type.1, for category S & A
Description Performance
Construction: Sealed Pan closure Applications:
Optical fibre cable
Cable seals: Heat activated and or cold applied
networks
Fibre management: Single Circuit, Single Element,
IEC 61753-1 category S
for underground;
Multiple Element and/or
IEC 61753-1 category A
for aerial;
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)
EN 61753-1 Fibre optic interconnecting devices and passive components – Part 1: General and guidance
1)
for performance standard (IEC 61753-1 )
EN 61300 Series Fibre optic interconnecting devices and passive components – Basic test and measurement
procedures (IEC 61300 Series)
ETS 300 019 Equipment Engineering (EE) Environmental conditions and environmental tests for
telecommunication equipment
Construction and splice capacity: Variant: Number Fibre Splices - Maximum capacity &
Fibre management system – SC, SE, SR, ME and MR
Rectangular
C
shape Single Single Single Multiple Multiple

Circuit Element Ribbon Element Ribbon
B
(SC) (SE) (SR) (ME) (MR)
(24/36 (144 f/tray)
A
f/tray)
A A A
16 96 72
splices splices splices
B B B B
36 216 144 96
splices splices splices splices
C C C C
60 360 288 432
splices splices splices splices
D D D D D
16 96 48 144/192 1152
H
splices splices splices splices splices

E E E E E
Circular
G
24 144 72 216/288 1728
shape
splices splices splices splices splices
F
F F F F F
48 288 120 360/576 1440
E
splices splices splices splices splices

D G G G G G
96 576 192 576/1152 2304
splices splices splices splices splice

H H H H H
144 864 360 1080/1728 4320
splices splices splices splices splices

J J J J
144 144 144/432 1728
Elliptical
splices splices splices splices
shape
K K K K
K
288 288 288/864 3456
splices splices splices splices

J
Contents
1 Scope.5
1.1 Product definition.5
1.2 Operating environment.5
1.3 Reliability .5
1.4 Quality assurance.5
1.5 Allowed fibre and cable types.5
2 Normative references.6
3 Description.7
3.1 Closure housing .7
3.2 Closure overpressure safety .7
3.3 Cable seals.7
3.4 Organiser system.8
3.5 Materials.8
3.6 Colour and marking.9
4 Variants.10
5 Dimensional requirements.14
5.1 Dimensions of rectangular closures.14
5.2 Dimensions of circular closures .14
5.3 Dimensions of elliptical closures .15
5.4 Special applications.15
6 Tests.16
6.1 Sample size.16
6.2 Test sample preparation .16
6.3 Test and measurement methods .17
6.4 Test sequence.17
6.5 Pass/fail criteria.17
7 Test report.18
8 Performance requirements.18
8.1 Dimensional and marking requirements .18
8.2 Sealing, optical and appearance performance criteria.18
8.3 Mechanical sealing performance requirements .20
8.4 Environmental sealing performance requirements .24
8.5 Mechanical optical performance requirements .26
8.6 Environmental optical performance requirements .27
Annex A (informative) Fibre for test sample details Table A.1 - Fibre references.28
Annex B (informative) Sample size and product sourcing requirements.29
Annex C (informative) Families of organiser systems covered in this standard.30
Annex D (informative) Dimensions of ‘Book’ style organisers for Multiple Elements and Multiple Ribbon .31
Annex E (informative) Dimensions of ’Tree’ style organisers for Single Circuit, Single Element and
Single Ribbon and in some cases Multiple Element.32
Annex F (informative) Dimensions of ‘Juke Box’ style organisers for Single Circuit (in some cases),
Single Element and Single Ribbon, Multiple Element and Multiple Ribbons .34

– 5 – EN 50411-2-2:2007
1 Scope
1.1 Product definition
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.
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:
ETS 300 019 class 8.1: underground locations (without earthquake requirement)
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 should be predicted using a
recognised reliability assessment programme.
1.4 Quality assurance
Compliance with this specification does not guarantee the manufacturing consistency of the product. This
should be maintained using a recognised quality assurance programme.
1.5 Allowed fibre and cable types
Although the performance tests are carried out on test samples with dispersion unshifted fibre (see
Annex A), the closure, once tested according to this product specification, will be also suited for other fibre
types like dispersion shifted, non-zero dispersion shifted and multi-mode fibres
This closure standard allows both singlemode 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 IEC 60794-2 (indoor), IEC 60794-3 (outdoor).

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 60793-2-50 Optical fibres - Part 2-50: Product specification - 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 61300 series Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures (IEC 61300 series)
EN 61300-2-1 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 Part 2-10: Test – 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-pressurised 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 pressurised 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 187105 Single mode optical fibre (duct/direct buried installation)
1)
Fibre optic interconnecting devices and passive component performance standard -
EN 61753-1
Part 1 - General guidance for performance standards (IEC 61753-1)
ETS 300 019 Equipment Engineering (EE) environmental conditions and environmental tests for
telecommunications equipment
1)
At draft stage.
– 7 – EN 50411-2-2:2007
3 Description
3.1 Closure housing
An optical closure comprises a closure housing that is attached to the ends of the joined cable sheaths
and a means for containing and protecting the fibres, splices and other passive optical devices.
This document shall also be used when air blown fibres are spliced inside this type of closure.
The fibre management closure provides facilities for environmental protection, housing for fibre
management systems and sealing of input and output optical cables. In order to comply with the standard,
the optical functionality, physical, geometrical and mechanical requirements are defined.
The design of the closure housing shall allow the jointing of two or more cable ends in the following
configurations or applications:
Common base covering:
(T) Track joint configuration used on trunk cable, with minimum of 2 cable entries
(S) Spur joint configuration used on local feeder cable with minimum of 3 cable entries
(D) Distribution joint configuration used on customer feed cable with minimum of 8 cable entries
NOTE Cable entries can be more than one cable per cable entry port.
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 on the live circuits.
3.2 Closure overpressure safety
Overpressure can build up in sealed closures due to temperature differentials, atmospheric pressure
changes over a period of time, flash testing of the seals after installation, or 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 a safety system or method to avoid overpressure is required for all sealed
closures.
3.3 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
(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.
3.4 Organiser system
The organiser system provides means for routing, storing and protecting of fibre splices or other passive
optical devices in a predetermined order, from one cable sheath opening to another.
Fibre circuits may be separated to an appropriate separation level. This will limit the risk of interruption of
traffic to those fibres that belong to the same group of circuits.
• Single Circuit (SC) is a fibre management system that is a group of fibres providing 1 termination or
service of 1 or 2 fibres. In this document a Single Circuit is considered to be a circuit of 2 fibres.
• Single Element (SE) is a fibre management system that is a cable subassembly comprising one or
more optical fibres inside a common covering e.g. tube or inside one groove of a grooved cable
(slotted core cable). Single elements provide more than one termination or circuit of typically 12 fibres.
In this document a Single Element is considered to be a group of 12 fibres.
• Single Ribbon (SR) is a fibre management system that is a cable subassembly comprising one
optical ribbon. Single ribbon is a group of fibres providing one termination or service of typically 4, 8 or
12 fibres.
• Multiple Element (ME) is a fibre management system that provides all necessary equipment to
connect a defined number of incoming and outgoing fibres/cables. It comprises storage and protection
of fibres and interconnections in one splice tray for more than one Single Element. Typically splice tray
capacities are between 24 and 144 fibres.
• Multiple Ribbon (MR) fibre management provides all necessary equipment to connect a defined
number of incoming and outgoing fibre ribbons that are generally housed within a singe tube or slot
within the cable. This tube is fixed to the entry and exit ports of the splice tray. It comprises storage
and protection of more than one single ribbon, but typically six or more fibre ribbons and their
interconnections in a single splice tray for ribbons between 4 and 36 fibre, but typically 12 fibre
ribbons. There are also many different names for this structure, e.g. mass storage or mass ribbons.
Typically splice tray capacities are between 36 and 144 fibres.
NOTE The families of organiser systems covered in this document are listed in Annex C.
3.5 Materials
All materials that are likely to come in contact with personnel shall meet appropriate health and safety
regulations.
Closure and sealing materials shall be compatible with each other and with the materials of the cables.
All components of the closure shall be resistant to solvents and degreasing agents that are typically used
to clean and degrease fibres and cables.

– 9 – EN 50411-2-2:2007
The effects of UV light and fungi on all exposed polymeric materials shall not affect product performance.
The effects of fungus and UV light shall be determined by measuring a suitable property (e.g. tensile
strength) both before and after exposure.
Metallic parts shall be resistant to the corrosive influences they may encounter during the lifetime of the
product (EN 61300-2-26).
3.6 Colour and marking
Marking/Identification of the ‘variant number’ (see Clause 4) shall be on the product or packaging label
along with the following:
a) identification of manufacturer,
b) manufacturing date code: year / month.
The preferred colour for the outer closure material is black for polymeric materials.

4 Variants
Table 1 – Sealed Pan Fibre Splice closure Type 1, for category S - Variants
EN 50411 - 2- 2 – X - X - X - XX - XX - X
1 2 3 4 5 6
Variant No.
Operating environment
X
S subterranean environment
aerial environment
A
B both subterranean and aerial environments

Variant No.
Closure Application - base number of cables
X
T Track closure (2 cables minimum)
S Spur closure (3 cables minimum)
D Distribution (8 cables minimum)

Variant No.
Cable sealing technology - heat, non-heat or both
X
R Cold applied
Heat activated (heat source required)
H
U Universal, both methods in a single cable entry base

Variant No.
Type of organiser system
XX
Single Circuit (1 or 2 fibres)
SC ‘Tree’
‘Book’ or
SE Single Element (4 or more fibres)
‘Juke box’
SR Single Ribbon (4 or more fibres per ribbon)
style organisers
Multiple Element (two or more units)
ME
(see Annexes C, D, E
Multiple Ribbon (six or more ribbons of 4 or more
MR
and F).
fibres per ribbon)
Depending on the selection of XX , refer to one of the following Tables 1A, 1B, 1C, 1D and 1E to find XX
4 5
and X :
Table 1A - SC tray and closure selection
24 30 36 48 54 60 66 72
XX -->SC trays 04 06 08 12 18
Maximum splice
08 12 16 24 36 48 60 72 96 108 120 132 144
capacity (reference)
X closure
A
B
C
D
E
F
G
H
NOTE 1  A SC tray contains 2 fibre splices per tray.
NOTE 2  Key; Single organiser stack        Double organiser stack

– 11 – EN 50411-2-2:2007
Table 1B - SE tray and closure selection
XX !SE
01 2 3 04 05 06 07 08 12 16 18 24 30 36 42 48 60 72
tray
Maximum
splice capacity 12 24 36 48 60 72 84 96 144 192 216 288 360 432 504 576 720 864
(reference)
X closure
A
B
C
D
E
F
G
H
J
K
NOTE 1  A SE tray contains 12 fibre splices per tray
NOTE 2  Key; Single organiser stack       Double organiser stack
Table 1C - SR tray and closure selection
XX !SR tray 01 02 03 04 05 06 07 10 12 16 18 24 30 36 42 48 60 72
Maximum splice
12 24 36 48 60 72 120 120 144 192 216 288 360 432 504 576 720 864
capacity
(reference)
X closure
A
B
C
D
E
F
G
H
J
K
NOTE 1  A SR tray contains 1 ribbon per tray
NOTE 2  Key; Single organiser stack       Double organiser stack

Table 1D - ME splice tray and closure selection for 24 fibres per tray
XX !ME
01 02 03 04 06 08 10 12 16 18 24 30 36 42 48 60 72
tray
Maximum
splice
24 48 72 96 144 192 240 288 384 432 576 720 864 1008 1152 1440 1728
capacity
(reference)
X closure
C
D
E
F
G
H
J
K
NOTE 1  A ME tray contains 24 single fibres per tray
NOTE 2  Key; Single organiser stack       Double organiser stack
Table 1E - ME splice tray and closure selection for 36 fibres per tray (optional)
XX !ME
01 02 03 04 05 06 08 10 12 16 18 24 30 36 48 60
tray
Maximum
splice
36 72 108 144 192 216 288 360 432 576 648 864 1080 1296 1728 2160
capacity
(reference)
X closure
D
E
F
G
H
J
K
NOTE 1  A ME tray contains 38 single fibres per tray
NOTE 2  Key; Single organiser stack       Double organiser stack

– 13 – EN 50411-2-2:2007
Table 1F - MR splice tray and closure selection for 144 fibres per tray option
XX !MR
01 02 03 04 06 10 08 12 18 16 24 30
tray
Maximum
splice
144 288 432 576 864 1440 1152 1728 2592 2304 3456 4320
capacity
(reference)
X closure
D
E
F
G
H
J
K
NOTE 1  8 Fibre Ribbons x 18 Ribbons per tray = 144 fibres per tray
NOTE 2  Key; Single organiser stack        Double organiser stack

This product specification concerns organisers of only one type of organiser system at a given fibre
separation level in parameter XX . If multiple types of organisers/levels in a single closure are required
when ordering; then, typically double the number of SC trays can be inserted in the same organiser
envelope as SE.
Therefore;
Maximum splice capacity ≥ 2 * (number of SC trays) + 12 * (number of SE trays)
Examples:
EN 50411 – 2- 2- S – D – H – SC – 06 – E
Distribution closure for underground application with heat activated cable seals, SC fibre management
system with 6 SC trays (12 splices) in a size E closure.
EN 50411 – 2- 2- A – T – R – MR - 04 – G
A Track joint closure for aerial application with cold applied cable seals and MR fibre management with
4 splice trays (576 fibres) in a type a size G closure.

5 Dimensional requirements
5.1 Dimensions of Rectangular closures

P
F
E
Figure 1 - Outline dimensions of the Rectangular closure
Table 2 - Dimensions of the Rectangular closures and maximum fibre capacity
Maximum capacity - Number of fibres
Envelope dimensions (maximum)
(without storage basket)
Rectangular
Organiser system
Overall Overall Overall
closure
length width height
size
Single Single Single Multiple Multiple mm mm mm
E F P
Circuit Element Ribbon Element Ribbon
A 16 96 72 NA NA 373 247 100
B 36 216 144 96 NA 523 148
C 60 360 288 432 NA 710 315 148
NOTE Additional information on the organiser system can be found in Annexes C, D, E and F.
5.2 Dimensions of Circular closures

F1
P
F2
E
Figure 2 - Outline dimensions of the Circular closure
Table 3 - Dimensions of the Circular closures
...