SIST EN 50411-2-4:2012

Fibre organisers and closures to be used in optical fibre communication systems - Product specifications - Part 2-4: Sealed dome fibre splice closures Type 1, for category S & A

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

LWL-Spleißkassetten und -Muffen für die Anwendung in LWL-Kommunikationssystemen - Produktnormen - Teil 2-4: LWL-Muffen Bauart 1 mit abgedichteter Haube für die Kategorien S und A

Organiseurs et boîtiers de fibres à utiliser dans les systèmes de communication par fibres optiques - Spécifications de produits - Partie 2-4: Boîtiers à épissure de fibres sous dôme scellés Type 1, pour catégories S & A

Delilniki za optična vlakna in kabelske spojnice za uporabo v optičnih komunikacijskih sistemih - Specifikacije izdelka - 2-4. del: Ohišja za neločljivi optični spoj z zatesnjenim pokrovom tipa 1, kategorije S&A

Ta specifikacija vsebuje začetne dimenzijske, optične, mehanske in okoljske zahteve, ki jih mora na začetku življenjske dobe izpolnjevati v celoti nameščeno ohišje za neločljivi optični spoj, da se lahko kategorizira kot izdelek v skladu s standardom EN.

General Information

• Status: Published
• Publication Date: 22-Feb-2012
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 15-Feb-2012
• Due Date: 21-Apr-2012
• Completion Date: 23-Feb-2012
• Ref Project: EN 50411-2-4:2012 - Fibre organisers and closures to be used in optical fibre communication systems - Product specifications - Part 2-4: Sealed dome fibre splice closures Type 1, for category S & A

Relations

• Replaces: SIST EN 50411-2-4:2006 - Fibre organisers and closures to be used in optical fibre communication systems - Product specifications -- Part 2-4: Sealed dome fibre splice closures Type 1, for category S & A
• Effective Date: 01-Apr-2012
• Replaced By: SIST EN 50411-2-4:2022 - Fibre management systems and protective housings to be used in optical fibre communication systems - Product specifications - Part 2-4: Sealed dome fibre splice closures for category S & A
• Effective Date: 30-Nov-2021
• Replaced By: SIST EN 50411-2-4:2022 - Fibre management systems and protective housings to be used in optical fibre communication systems - Product specifications - Part 2-4: Sealed dome fibre splice closures for category S & A
• Effective Date: 07-Jun-2022
• Revised: SIST EN 50411-2-4:2006 - Fibre organisers and closures to be used in optical fibre communication systems - Product specifications -- Part 2-4: Sealed dome fibre splice closures Type 1, for category S & A
• Effective Date: 25-Dec-2012
• Revised: SIST EN 50411-2-4:2022 - Fibre management systems and protective housings to be used in optical fibre communication systems - Product specifications - Part 2-4: Sealed dome fibre splice closures for category S & A
• Effective Date: 13-Feb-2018
• Replaces: SIST EN 50411-2-4:2006 - Fibre organisers and closures to be used in optical fibre communication systems - Product specifications -- Part 2-4: Sealed dome fibre splice closures Type 1, for category S & A
• Effective Date: 28-Jan-2023
• Replaces: SIST EN 50411-2-4:2006 - Fibre organisers and closures to be used in optical fibre communication systems - Product specifications -- Part 2-4: Sealed dome fibre splice closures Type 1, for category S & A
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 50411-2-4:2012
01-april-2012
1DGRPHãþD
SIST EN 50411-2-4:2006
'HOLOQLNL]DRSWLþQDYODNQDLQNDEHOVNHVSRMQLFH]DXSRUDERYRSWLþQLK
NRPXQLNDFLMVNLKVLVWHPLK6SHFLILNDFLMHL]GHONDGHO2KLãMD]DQHORþOMLYL
RSWLþQLVSRM]]DWHVQMHQLPSRNURYRPWLSDNDWHJRULMH6 $
Fibre organisers and closures to be used in optical fibre communication systems -
Product specifications - Part 2-4: Sealed dome fibre splice closures Type 1, for category
S & A
LWL-Spleißkassetten und -Muffen für die Anwendung in LWL-Kommunikationssystemen
- Produktnormen - Teil 2-4: LWL-Muffen Bauart 1 mit abgedichteter Haube für die
Kategorien S und A
Organiseurs et boîtiers de fibres à utiliser dans les systèmes de communication par
fibres optiques - Spécifications de produits - Partie 2-4: Boîtiers à épissure de fibres sous
dôme scellés Type 1, pour catégories S & A
Ta slovenski standard je istoveten z: EN 50411-2-4:2012
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
SIST EN 50411-2-4:2012 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN 50411-2-4:2012

---------------------- Page: 2 ----------------------

SIST EN 50411-2-4:2012

EUROPEAN STANDARD
EN 50411-2-4

NORME EUROPÉENNE
February 2012
EUROPÄISCHE NORM

ICS 33.180.20 Supersedes EN 50411-2-4:2006


English version


Fibre organisers and closures to be used in optical fibre communication
systems -
Product specifications -
Part 2-4: Sealed dome 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 - Produktnormen -
Partie 2-4: Boîtiers à épissure de fibres Teil 2-4: LWL-Muffen Bauart 1 mit
sous dôme scellés Type 1, pour abgedichteter Haube 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 50411-2-4:2012 E

---------------------- Page: 3 ----------------------

SIST EN 50411-2-4:2012
EN 50411-2-4:2012 (E)
Contents Page

Foreword . 3
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 . 5
3 Description . 6
3.1 Closure housing . 6
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 . 9
5 Dimensional requirements . 14
5.1 Dimensions of closures for Multiple Element and Multiple Ribbon fibres . 14
5.2 Dimensions of closures for Single Circuit, Single Element and Single Ribbon . 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 . 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 organisers for Multiple Element and Multiple Ribbon
fibres . 32
Annex E (informative) Dimensions of S organisers for Single Circuit, Single Element and Single
Ribbon . 33
Bibliography . 35


2

---------------------- Page: 4 ----------------------

SIST EN 50411-2-4:2012
EN 50411-2-4:2012 (E)
Foreword
This document (EN 50411-2-4:2012) 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
(dow) 2012-12-21
• latest date by which the national
standards conflicting with this
document have to be withdrawn

This document supersedes EN 50411-2-4:2006.
EN 50411-2-4:2012 includes the following significant technical changes with respect to EN 50411-2-4:2007:
 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.
3

---------------------- Page: 5 ----------------------

SIST EN 50411-2-4:2012
EN 50411-2-4:2012 (E)

Fibre organisers and closures to be used in optical fibre communication systems – Product specifications
Part 2-4: Sealed dome fibre splice closures Type 1, for category S & A
Description Performance
Construction: Sealed dome ended Applications:

Cable seals: Heat activated and or cold applied Optical fibre cable networks
for underground;  EN 61753-1 category S
Fibre management: Single Circuit, Single Element,
Multiple Element and/or
for aerial; EN 61753-1 category A
Single/Multiple Ribbon
Related documents:
EN 60793-2-50 Optical fibres – Part 2-50: Product specifications – Sectional specification for class B single-mode
fibres (IEC 60793-2-50)
EN 60794-2 Optical fibre cables – Part 2: Indoor cables – Sectional specification (IEC 60794-2)
EN 60794-3 Optical fibre cables – Part 3: Sectional specification – Outdoor cables (IEC 60794-3)
1)
EN 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)
ETS 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
S organiser M organiser
H
Single Single Single Multiple Multiple
Circuit Element Ribbon Element Ribbon
(SC) (SE) (SR) (ME) (MR)
G

A
72
D
splices
F
B B B B
B
12 72 36 96
splices splices splices splices
C C C C
C 24 144 72 144
E
splices splices splices splices
A
D D D D
48 288 144 576
splices splices splices splices
E E E
84 216 144
splices splices splices
F F F
144 432 288
splices splices splices
G G G G
192 624 384 288
splices splices splices splices
H H H  H
240 864 432 1 152
splices splices splices splices

1)
At draft stage.
4

---------------------- Page: 6 ----------------------

SIST EN 50411-2-4:2012
EN 50411-2-4:2012 (E)
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 single mode 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 EN 60794-2 (indoor), EN 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 specifications ― 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) (EN 61300-2-1)
5

---------------------- Page: 7 ----------------------

SIST EN 50411-2-4:2012
EN 50411-2-4:2012 (E)

EN 61300-2-4, Fibre optic interconnecting devices and passive components ― Basic test and measurement
procedures ― Part 2-4: Tests ― Fibre/cable retention (EN 61300-2-4)
EN 61300-2-5, Fibre optic interconnecting devices and passive components ― Basic test and measurement
procedures ― Part 2-5: Tests ― Torsion (EN 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 (EN 61300-2-10)
EN 61300-2-12, Fibre optic interconnecting devices and passive components ― Basic test and measurement
procedures ― Part 2-12: Tests ― Impact (EN 61300-2-12)
EN 61300-2-22, Fibre optic interconnecting devices and passive components ― Basic test and measurement
procedures ― Part 2-22: Tests ― Change of temperature (EN 61300-2-22)
EN 61300-2-23, Fibre optic interconnecting devices and passive components ― Basic test and measurement
procedures ― Part 2-23: Tests ― Sealing for non-pressurized closures of fibre optic devices
(EN 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 (EN 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 (EN 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 (EN 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 (EN 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 (EN 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 (EN 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 (EN 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 (EN 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 is not to be confused with an optical closure for blowing cable or fibre. This comprises an access housing
that allows the interconnection of cable ducts or tubes and is attached to the ends of the ducts or cables
containing empty tubes. However, this document shall be used when air blown fibres are spliced inside this
type of closure.
6

---------------------- Page: 8 ----------------------

SIST EN 50411-2-4:2012
EN 50411-2-4:2012 (E)
The fibre management closure provides facilities for the 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
Common base covering:
(D) Distribution joints have 4 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 of the live circuits.
3.2 Closure overpressure safety
Overpressure can build up in sealed closures due to temperature differentials, or due to atmospheric pressure
changes over a period of time, or due to flash testing of the seals after installation, or due to incorrect
installation techniques. Care should be taken when opening a sealed closure.
Provisions shall be made that overpressure is exhausted when opening the closure prior to complete removal
of the cover.
For air blown fibre applications an overpressure release system is required for all sealed closures.
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
7

---------------------- Page: 9 ----------------------

SIST EN 50411-2-4:2012
EN 50411-2-4:2012 (E)

• o-rings, grommets, rubber shapes, pre-expanded tubing are cold processes
(U) Combined heat activated and cold applied
The fibre management closure allows for a physical housing structure that provides for optical cable fixing,
sealing, anchoring, water and gas blocking, storage and routing up to the input and output fibres of the fibre
management system.
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 one 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 fibres, 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.
8

---------------------- Page: 10 ----------------------

SIST EN 50411-2-4:2012
EN 50411-2-4:2012 (E)
3.6 Colour and marking
Marking/identification of the ‘variant number’ (see Clause 4) to 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 dome fibre splice closure Type 1, for category S - Variants
EN 50411-2-4 – X – XX – X – XX – XX – X
1 2 3 4 5 6
Variant No.
Operating environment
X
1
Subterranean environment
S
A Aerial environment
B Both subterranean and aerial environments

Variant No.
Closure application – base number of cables
XX
2
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
3
R Cold applied
H Heat activated (heat source required)
U Universal, both methods in a single cable entry base

9

---------------------- Page: 11 ----------------------

SIST EN 50411-2-4:2012
EN 50411-2-4:2012 (E)


Variant No.
Type of organiser system
XX
4
SC Single Circuit (1 or 2 fibres) S organisers
SE Single Element (4 or more fibres) NOTE  in some cases
an M organiser tray can
be used as SC or SE
organiser tray (by
SR Single Ribbon (4 or more fibres per ribbon)
reducing number of
stored splices per tray)
ME Multiple Element (two or more units)
M organisers
Multiple Ribbon (six or more ribbons 4 fibres per ribbons)
MR

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 :
6
Table 1a ― SC tray and closure selection
XX ÆÆÆÆ
5
06 12 18 24 30 36 42 48 54 60 66 72 96 120
SC trays
Maximum
splice
12 24 36 48 60 72 84 96 108 120 132 144 192 240
capacity
(reference)

X Closure
6

B

C

D


E

F
G
NOTE A SC tray contains 2 fibre splices per tray.

10

---------------------- Page: 12 ----------------------

SIST EN 50411-2-4:2012
EN 50411-2-4:2012 (E)
Table 1b ― SE tray and closure selection
XX ÆÆÆÆ
5
01 02 03 04 05 06 07 08 12 16 18 24 36 42 48 52 60 72
SE tray
Maximum
splice
12 24 36 48 60 72 84 96 144 192 216 288 432 504 576 624 720 864
capacity
(reference)
X Closure
6

B

C


D


E

F


G
H

NOTE A SE tray contains 12 fibre splices per tray.
11

---------------------- Page: 13 ----------------------

SIST EN 50411-2-4:2012
EN 50411-2-4:2012 (E)

Table 1c ― SR tray and closure selection
XX ÆÆÆÆ
5
2 4 5 6 7 8 9 10 12 16 18 24 36
SR tray
Maximum
splice
24 48 60 72 84 96 108 120 144 192 216 288 432
capacity
(reference)

X Closure
6

B

C

D

E

F
H
NOTE 1 A SR tray has 1 ribbon per tray.
NOTE 2 A ribbon has 12 fibres. When using ribbons with a different fibre count than 12 fibres per ribbon, the maximum
splice capacity should be changed accordingly.

Table 1d ― ME splice tray and closure selection
XX ÆÆÆÆ
5
1A 2A 3A 1B 2B 3B 4B 5B 6B 1D 2D 3D 4D 5D 6D 7D 8D
ME tray
Maximum
splice
capacity 24 48 72 24 48 72 96 120 144 72 144 216 288 360 432 504 576
(reference
)
X Closure
6

A


B


C


D

NOTE 1 ME- Size A and ME- Size B trays have a minimum of 24 splices per tray.
NOTE 2 ME- Size D trays have a minimum of 144 splices per tray.

12

---------------------- Page: 14 ----------------------

SIST EN 50411-2-4:2012
EN 50411-2-4:2012 (E)
Table 1e ― MR splice tray and closure selection
XX ÆÆÆÆ
5
1D 2D 3D 4D 6D 8D 1H 2H 3H 4H 5H 6H 7H 8H
MR tray
Maximum
splice
36 72 108 144 216 288 144 288 432 576 720 864 1 008 1 152
capacity
(reference)

X Closure
6

G

H
NOTE 1 MR- Size D trays have a minimum of 24 splices/fibres per tray.
NOTE 2 MR- Size H trays have a minimum of 144 splices/fibres per tray.
NOTE 3 A ribbon has 12 fibres. When using ribbons with a different fibre count than 12 fibres per ribbon, the maximum
splice capacity should be changed accordingly.

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 is required when
4
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 50411-2-4 – S – D2 – H – SC – 06 – E
Distribution 18 cable 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 50411-2-4
...