EN 50411-2-2:2012

SLOVENSKI STANDARD
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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 à utiliser dans les systèmes de communication par
fibres optiques - Spécifications de produits - Partie 2-2: Boîtiers à épissure de fibres dans
un support fermé Type 1, pour catégories S & A
Ta slovenski standard je istoveten z: EN 50411-2-2:2012
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
January 2012
EUROPÄISCHE NORM
ICS 33.180.20 Supersedes EN 50411-2-2:2007

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 à utiliser LWL-Spleißkassetten und -Muffen für die
dans les systèmes de communication par Anwendung in LWL-
fibres optiques - Kommunikationssystemen -
Spécifications de produits - Produktnorm -
Partie 2-2: Boîtiers à épissure de fibres Teil 2-2: LWL-Muffen Bauart 1 mit
dans un support fermé Type 1, pour abgedichteter Schale für die Kategorien S
catégories S & A und A
This European Standard was approved by CENELEC on 2011-12-21. 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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland, Turkey and the United Kingdom.

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

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50411-2-2:2012 E
Contents Page
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 Description . 7
3.1 Closure housing . 7
3.2 Closure overpressure safety . 8
3.3 Cable seals . 8
3.4 Organiser system . 9
3.5 Materials . 9
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 . 15
5.3 Dimensions of Elliptical closures . 16
5.4 Special applications . 17
6 Tests . 18
6.1 Sample size . 18
6.2 Test sample preparation. 18
6.3 Test and measurement methods . 19
6.4 Test sequence . 19
6.5 Pass/fail criteria . 19
7 Test report . 20
8 Performance requirements . 20
8.1 Dimensional and marking requirements . 20
8.2 Sealing, optical and appearance performance criteria . 20
8.3 Mechanical sealing performance requirements . 22
8.4 Environmental sealing performance requirements . 26
8.5 Mechanical optical performance requirements . 28
8.6 Environmental optical performance requirements . 30
Annex A (informative) Fibre for test sample details Table A.1 — Fibre references . 31
Annex B (informative) Sample size and product sourcing requirements . 32
Annex C (informative) Families of organiser systems covered in this standard . 33
Annex D (informative) Dimensions of ‘Book’ style organisers for Multiple Elements and Multiple Ribbon . 34
Annex E (informative) Dimensions of ’Tree’ style organisers for Single Circuit, Single Element and Single
Ribbon and in some cases Multiple Element . 36
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 . 38
Bibliography . 40

Foreword
This document (EN 50411-2-2:2012) has been prepared by CLC/TC 86BXA, "Fibre optic interconnect, passive
and connectorised components".
The following dates are fixed:
(dop) 2012-12-21
• latest date by which this document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2012-12-21
standards conflicting with this
document have to be withdrawn
This document supersedes EN 50411-2-2:2007.
 the variant XX2 additional distribution closures with more cable entrance ports were defined (new
versions D2, D3 and D4 were added);
 no other technical changes were made to the document.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights.

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
Description Performance
Construction: Sealed Pan closure Applications:

Cable seals: Heat activated and or cold applied Optical fibre cable networks
Fibre management: Single Circuit, Single Element, Multiple for underground;
Element and/or Single/Multiple Ribbon for aerial; EN 61753-1 category S
EN 61753-1 category A
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 performance standard – Part 1: General and
guidance for performance standard (IEC 61753-1)
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 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
B
Circuit Element Ribbon Element Ribbon

(SC) (SE) (SR) (ME) (MR)
A
(24/36 (144 f/tray)
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
H
16 96 48 144/192 1152
splices splices splices splices splices
Circular
G
shape E E E E E
F
24 144 72 216/288 1728
splices splices splices splices splices
E
F F F F F
48 288 120 360/576 1440
D
splices splices splices splices splices

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
Elliptical
J J J J
shape
144 144 144/432 1728
K
splices splices splices splices

J
K K K K
288 288 288/864 3456
splices splices splices Splices

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:
ETSI EN 300 019 class 8.1: underground locations (without earthquake requirement)
EN 61753-1 category S: subterranean environment
category A: aerial environment
1.3 Reliability
Whilst the anticipated service life expectancy of the product in this environment is 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 61300 (all parts) Fibre optic interconnecting devices and passive components — Basic test and
measurement procedures (IEC 61300 all parts)
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 61300-2-5, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 2-5: Tests — Torsion (IEC 61300-2-5)
EN 61300-2-10, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 2-10: Test — Crush resistance (IEC 61300-2-10)
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-pressurised 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 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 61753-1, Fibre optic interconnecting devices and passive components performance standard — Part 1:
General and guidance for performance standards (IEC 61753-1)
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 joints have 4 cable entry port configurations used typically on FTTH customer feed cable
with minimum of 8, 18, 36, and 66 cable entry options.
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.
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 - XX - X - XX - XX - X
1 2 3 4 5 6
Variant No.
Operating environment
X
S
subterranean environment
A
aerial environment
both subterranean and aerial environments
B
Variant No.
Closure Application - base number of cables
XX
T1
Track closure (2 cables minimum)
S1
Spur closure (3 cables minimum)
Distribution (8 cables minimum)
D1
D2 Distribution (18 cables minimum)
D3 Distribution (34 cables minimum)
D4 Distribution (66 cables minimum)

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

Variant No.
Type of organiser system
XX
SC Single Circuit (1 or 2 fibres)
‘Tree’
SE Single Element (4 or more fibres)
‘Book’ or
SR Single Ribbon (4 or more fibres per ribbon)
‘Juke box’
ME Multiple Element (two or more units)
style organisers
(see Annexes C, D, E
MR Multiple Ribbon (six or more ribbons of 4 or more
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 and
4 5
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
Table 1B — SE tray and closure selection
XX ÆÆÆÆSE
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 ÆÆSR tray
ÆÆ 01 02 03 04 05 06 07 10 12 16 18 24 30 36 42 48 60 72
Maximum splice
capacity 12 24 36 48 60 72 120 120 144 192 216 288 360 432 504 576 720 864
(reference)
X closure
A
B
C
D
E
F
G
H
J
K
NOTE 1 A 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 ÆÆÆÆME
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 ÆÆÆÆME
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

Table 1F — MR splice tray and closure selection for 144 fibres per tray option
XX ÆÆÆÆMR
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 – D2 – H – SC – 06 – E
Distribution 18 cables minimum 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 – T1 – R – MR - 04 – G
A Track 2 cables minimum 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
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...