1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 50411-2-2:2012Fibre organisers and closuresto be used in optical fibrecommunication systems Product specifications Part 2-2: Sealed pan fibre splice closuresType 1, for cat
2、egory S 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. BS EN 50411-2-2:2012EN 5
3、0411-2-2:2012 (E) 5 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 for aerial; EN 61753-1 category S EN 61753-1 category A Related documents: EN 60793-2-50 Optical fibres Part 2-
4、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
5、 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 Environme
6、ntal Engineering (EE) Environmental conditions and environmental tests for telecommunications equipment Construction and splice capacity: Rectangular shape Circular shape Elliptical shape Variant: Number Fibre Splices - Maximum capacity hot melt adhesives; polyethylene injection welding. (R) Dedicat
7、ed 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,
8、 anchoring, water and gas blocking, storage and routing up to the input and output fibres of the fibre management system. BS EN 50411-2-2:2012EN 50411-2-2:2012 (E) 9 3.4 Organiser system The organiser system provides means for routing, storing and protecting of fibre splices or other passive optical
9、 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 sy
10、stem 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
11、 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 su
12、bassembly 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
13、. 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
14、 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
15、 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
16、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 sh
17、all 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 suitabl
18、e 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
19、 product or packaging label along with the following: a) identification of manufacturer, b) manufacturing date code: year / month. BS EN 50411-2-2:2012EN 50411-2-2:2012 (E) 10 The preferred colour for the outer closure material is black for polymeric materials. 4 Variants Table 1 Sealed Pan Fibre Sp
20、lice closure Type 1, for category S - Variants EN 50411 - 2- 2 X1 - XX2 - X3 - XX4 - XX5- X6 Variant No. X1Operating environment S subterranean environment A aerial environment B both subterranean and aerial environments Variant No. XX2Closure Application - base number of cables T1 Track closure (2
21、cables minimum) S1 Spur closure (3 cables minimum) D1 Distribution (8 cables minimum) D2 Distribution (18 cables minimum) D3 Distribution (34 cables minimum) D4 Distribution (66 cables minimum) Variant No. X3Cable sealing technology - heat, non-heat or both R Cold applied H Heat activated (heat sour
22、ce required) U Universal, both methods in a single cable entry base Variant No. XX4Type of organiser system SC Single Circuit (1 or 2 fibres) Tree Book or Juke box style organisers (see Annexes C, D, E and F). SE Single Element (4 or more fibres) SR Single Ribbon (4 or more fibres per ribbon) ME Mul
23、tiple Element (two or more units) MR Multiple Ribbon (six or more ribbons of 4 or more fibres per ribbon) Depending on the selection of XX4, refer to one of the following Tables 1A, 1B, 1C, 1D and 1E to find XX5and X6: BS EN 50411-2-2:2012EN 50411-2-2:2012 (E) 11 Table 1A SC tray and closure selecti
24、on XX5SC trays 04 06 08 12 18 24 30 36 48 54 60 66 72 Maximum splice capacity (reference) 08 12 16 24 36 48 60 72 96 108 120 132 144 X6closure 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 se
25、lection XX5SE tray 01 2 3 04 05 06 07 08 12 16 18 24 30 36 42 48 60 72 Maximum splice capacity (reference) 12 24 36 48 60 72 84 96 144 192 216 288 360 432 504 576 720 864 X6closure 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 organ
26、iser stack BS EN 50411-2-2:2012EN 50411-2-2:2012 (E) 12 Table 1C SR tray and closure selection XX5SR tray 01 02 03 04 05 06 07 10 12 16 18 24 30 36 42 48 60 72 Maximum splice capacity (reference) 12 24 36 48 60 72 120 120 144 192 216 288 360 432 504 576 720 864 X6closure A B C D E F G H J K NOTE 1 A
27、 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 XX5ME tray 01 02 03 04 06 08 10 12 16 18 24 30 36 42 48 60 72 Maximum splice capacity (reference) 24 48 72 96 144 192 240 288 384 432 57
28、6 720 864 1008 1152 1440 1728 X6closure 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 BS EN 50411-2-2:2012EN 50411-2-2:2012 (E) 13 Table 1E ME splice tray and closure selection for 36 fibres per tray (optional) XX5ME tra
29、y 01 02 03 04 05 06 08 10 12 16 18 24 30 36 48 60 Maximum splice capacity (reference) 36 72 108 144 192 216 288 360 432 576 648 864 1080 1296 1728 2160 X6closure 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 sp
30、lice tray and closure selection for 144 fibres per tray option XX5MR tray 01 02 03 04 06 10 08 12 18 16 24 30 Maximum splice capacity (reference) 144 288 432 576 864 1440 1152 1728 2592 2304 3456 4320 X6closure D E F G H J K NOTE 1 8 Fibre Ribbons x 18 Ribbons per tray = 144 fibres per tray NOTE 2 K
31、ey; Single organiser stack Double organiser stack BS EN 50411-2-2:2012EN 50411-2-2:2012 (E) 14 This product specification concerns organisers of only one type of organiser system at a given fibre separation level in parameter XX4. If multiple types of organisers/levels in a single closure are requir
32、ed 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
33、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 fibre
34、s) in a type a size G closure. 5 Dimensional requirements 5.1 Dimensions of Rectangular closures Figure 1 Outline dimensions of the Rectangular closure P E F BS EN 50411-2-2:2012EN 50411-2-2:2012 (E) 15 Table 2 Dimensions of the Rectangular closures and maximum fibre capacity Rectangular closure siz
35、e Maximum capacity - Number of fibres (without storage basket) Envelope dimensions (maximum) Organiser system Overall length mm E Overall width mm F Overall height mm P Single Circuit Single Element Single Ribbon Multiple Element Multiple Ribbon A 16 96 72 NA NA 373 247 100 B 36 216 144 96 NA 523 51
36、5 148 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 Figure 2 Outline dimensions of the Circular closure E P F2 F1 BS EN 50411-2-2:2012EN 50411-2-2:2012 (E) 16 Table 3 Dimensions of the Ci
37、rcular closures and maximum fibre capacity Circular closure size Maximum capacity - Number of fibres (without storage basket) Envelope dimensions (maximum) Organiser system Overall length mm E Diameter mm F1 Overall Clamp diameter mm F2 Overall height mm P Single Circuit Single Element Single Ribbon
38、 Multiple Element Multiple Ribbon D 16 96 96 144/192 1 152 450 350 395 250 E 24 144 144 216/288 1 728 300 F 36 288 288 360/576 1 440 400 G 96 504 504 576/1152 2 304 550 H 864 864 1 080/1 728 4 320 700 NOTE Additional information on the organiser system can be found in Annexes C, D, E and F. 5.3 Dime
39、nsions of Elliptical closures Figure 3 Outline dimensions of the Elliptical closure E P F2 F1 BS EN 50411-2-2:2012EN 50411-2-2:2012 (E) 17 Table 4 Dimensions of the Elliptical closures and maximum fibre capacity Elliptical closure size Maximum capacity - Number of fibres (without storage basket) Env
40、elope dimensions (maximum) Organiser system Overall length mm E X axis mm F1 Overall clamp Y axis mm F2 Overall height mm P Single Circuit Single Element Single Ribbon Multiple Element Multiple Ribbon J NA 72 144 144/432 1728 600 520 450 200 K NA 144 288 288/864 3456 300 NOTE Additional information
41、on the organiser system can be found in Annexes C, D, E and F. 5.4 Special applications Figure 4 Special applications All types can be used inline with cable port entries on two separate sides of the closure. BS EN 50411-2-2:2012EN 50411-2-2:2012 (E) 18 6 Tests 6.1 Sample size Optical test samples s
42、hall be constructed as described in 6.2. Due to their complexity, consecutive testing on the same optical sample is allowed. The minimum recommended sample sizes are given in Annex B. 6.2 Test sample preparation Sealing performance test samples shall be provided with an air pressure test access valv
43、e. The length of the cables coming from/to the closure shall be at least 1 metre. The open ends of the cables shall be sealed. Each applicable cable type with minimum and maximum cable dimensions shall be represented in the test program. Optical test samples shall be constructed in such a way that t
44、hey will cover all allowed functions of a track joint and/or distribution joint. This shall, where appropriate, be realised by building optical circuits for each fibre separation level (typical SC, SE, SR, ME or MR splicing and uncut fibre storage). The fibres for the optical test samples are covere
45、d in Annex A. Optical test sample construction: Both extremities of a looped cable are terminated in the Track Joint closure (see Figure 5 a). The length of the looped cable is chosen in such a way that it is longer than the “dead zone” of an OTDR. This will allow the location of the potential cause
46、s of optical losses and differentiate if a change in signal is induced by the organiser system in a single location or distributed over the whole circuit length. The required length depends on the selected pulse width and dynamic range of the OTDR. Typically a cable loop length of 25 m to 50 m is re
47、quired. Track JointconfigurationLooped CableDrop cableFibresIn Out Tubes 1 2 3 1 2 3 Connections to test equipment Length L Figure 5 a) Track joint configuration sample In the Track joint closure the fibres from one end of the looped cable end are connected to the fibres of the other cable end in su
48、ch a way that light will sequentially flow through 10 selected fibres in the cable loop. The first and the last fibre of this circuit will be spliced to the fibres of a drop cable for making external connections to a light source and optical power meter. All relevant fibre separation levels (SC, SE, SR, ME or MR) are to be represented in the test sample, preferably in separate circuits. BS EN 50411-2-2:2012EN 5
