1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 50411-2-3:2012Fibre organisers and closuresto be used in optical fibrecommunication systems Product specifications -Part 2-3: Sealed inline fibre splice closuresType 1, for
2、 category 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 50411-2-3:2012
3、EN 50411-2-3:2012 (E) 5 Fibre organisers and closures to be used in optical fibre communication systems - Product specificationsPart 2-3: Sealed inline fibre splice closures Type 1, for category S manufacturing date code: year / month. The preferred colour for the outer closure material is black for
4、 polymeric materials. 4 Variants Table 1 Sealed inline fibre splice closure Type 1, for category S - Variants EN 50411 - 2- 3 X1 - XX2 - X3 - XX4 - XXX5- X6 Variant No. X1Operating environment S Subterranean environment A Aerial environment B Both subterranean and aerial environments Variant No. XX2
5、Closure Application - base number of cables T1 Track closure (2 cables min.) S1 Spur closure (3 cables min.) D1 Distribution (8 cables min.) D2 Distribution (18 cables minimum) D3 Distribution (34 cables minimum) D4 Distribution (66 cables minimum) Variant No. X3Cable sealing technology heat, non-he
6、at or both R Cold applied H Heat activated (heat source required) U Universal, both methods in a single cable entry base Variant No. XX4Type of organiser system SC Single Circuit (1 or 2 fibres) S organisers NOTE In some cases an M organiser tray can be used as SC or SE organiser tray (by reducing n
7、umber of stored splices per tray). SE Single Element (4 or more fibres) SR Single Ribbon (4 or more fibres per ribbon) ME Multiple Element (two or more units) M organisers MR Multiple Ribbon (six or more ribbons 4 fibres per ribbons) Depending on the selection of XX4, refer to one of the following T
8、ables 1a) to 1k) to find XXX5 and X6. BS EN 50411-2-3:2012EN 50411-2-3:2012 (E) 11 Table 1a) SC tray and closure selection XXX5 SC trays 003 004 006 008 010 012 016 018 020 024 030 036 048 072 Maximum splice capacity (reference) 6 8 12 16 20 24 32 36 40 48 60 72 96 144 X6Closure A Type 1 B C D E F T
9、ype 2A G H Type 2B J K L NOTE SC contains 2 fibre splices. Table 1b) SE tray and closure selection XXX5 SE tray 001 002 003 004 005 006 007 008 012 016 018 024 036 042 048 060 072 Maximum splice capacity (reference) 12 24 36 48 60 72 84 96 144 192 216 288 432 504 576 720 864 X6Closure A Type 1 B C D
10、 E F Type 2A G H Ty pe 2B J K L NOTE SE contains 12 fibre splices. BS EN 50411-2-3:2012EN 50411-2-3:2012 (E) 12 Table 1c) SR tray and closure selection XXX5 SR tray 001 002 003 004 005 006 007 008 011 012 018 024 Maximum splice capacity (reference) 12 24 36 48 60 72 84 96 132 144 216 288 X6Closure A
11、 Type 1 B C D G Type 2A H Type 2B J NOTE 1 SR tray has 1 ribbon per tray. NOTE 2 1 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 18 fibre trays with closure selection XXX5 ME 18
12、 fibre trays 01N 02N Maximum splice capacity (reference) 18 36 X6Closure A Type 1 Table 1e) ME 24 fibre trays with closure selection XXX5 ME 24 fibre trays 01P 02P 03P 04P 05P 06P 07P 08P 11P 12P 16P 20P 24P 36P Maximum splice capacity (reference) 24 48 72 96 120 144 126 144 264 288 384 480 576 864
13、X6Closure B Type 1 C D E F Type 2A G H Type 2B J BS EN 50411-2-3:2012EN 50411-2-3:2012 (E) 13 Table 1f) ME 36 fibre trays with closure selection XXX5 ME 36 fibre trays 01S 02S 03S 04S 05S 06S 07S 08S 10S 12S 16S 20S 24S 36S Maximum splice capacity (reference) 36 72 108 144 180 144 126 288 360 432 57
14、6 720 864 1296 X6Closure A Type 1 B C D Table 1g) ME 48 fibre trays with closure selection XXX5 MR 48 fibre tray01T 02T 03T 04T 05T 06T 07T 08T 11T Maximum splice capacity (reference) 48 96 144 196 240 288 336 384 528 X6Closure H Type 2B J NOTE A ME tray contains the following numbers of fibre splic
15、es per tray 18, 24, 36, 48, 72. Table 1h) ME 72 fibre trays with closure selection XXX5 ME 72 fibre tray 01V 02V 03V 04S 05V 06V 07V 08V 09V Maximum splice capacity (reference) 72 177 216 196 360 432 504 576 648 X6Closure F Type 2A L Type 2B NOTE A ME tray can contain the following numbers of fibre
16、splices per tray 18, 24, 36, 48and 72. Table 1i) MR 24 fibre trays with closure selection XXX5MR 24 fibre trays01W 02W 03W 04W Maximumsplice capacity (reference) 24 24 72 96 X6Closure A Type 1 NOTE When using ribbons with a different fibre count than 12 fibres per ribbon, the maximum splice capacity
17、 should be changed accordingly. BS EN 50411-2-3:2012EN 50411-2-3:2012 (E) 14 Table 1j) MR 144 fibre trays with closure selection XXX5 ME 144 fibre trays 01Y 02Y 03Y 04Y 05Y 06Y 07Y 08Y 11Y 12Y 24Y 36Y Maximum splice capacity (reference) 144 288 432 576 720 864 1008 1152 1584 1728 3456 5184 X6Closure
18、 A Type 1 B C D E H Type 2B J L NOTE When using ribbons with a different fibre count than 12 fibres per ribbon, the maximum splice capacity should be changed accordingly. Table 1k) - MR 288 fibre trays with closure selection XXX5 MR 288 fibre trays 01Z 02Z 03Z 04Z Maximum splice capacity (reference)
19、 288 576 864 1152 X6Closure L Type 2A NOTE 1 A MR tray contains 288 fibre splices per tray. NOTE 2 1 ribbon has 12 fibres; trays contain 24 ribbons. NOTE 3 When using ribbons with a different fibre count than 12 fibres per ribbon, the maximum splice capacity should be changed accordingly. Examples:
20、EN 50411 2- 3- S D2 R SC 006 C Distribution 18 cable minimum closure for underground application with cold applied cable seals and SC fibre management system, with 6 SC trays (72 splices) in a size C closure. EN 50411 2- 3- A T1 U MR 04Y H A Track 2 cable minimum joint closure for aerial application
21、 with universal method cable seals and MR fibre management with 4 splice trays type MR-Y in a size H closure. BS EN 50411-2-3:2012EN 50411-2-3:2012 (E) 15 5 Dimensional requirements 5.1 Dimensions of Type 1 closures Figure 1 Outline dimensions of Type 1 closures Table 2 Dimensions of Type 1 closures
22、 Closure size Maximum capacity - Number of fibres (without storage basket) Envelope dimensions max. 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 8 48 48 144 288 655 219 184 B 16 96 96 288 11
23、52 914 273 235 C 24 144 120 360 1728 914 318 254 D 48 288 288 864 3456 975 394 330 E 144 432 NA 864 5184 914 318 305 NOTE Additional information on the organiser system can be found in Annexes C, D, E and F. FP EBS EN 50411-2-3:2012EN 50411-2-3:2012 (E) 16 5.2 Dimensions of Type 2A closures Figure 2
24、 Outline dimensions of Type 2A closures Table 3 Dimensions of Type 2A closures Closure size Maximum capacity - Number of fibres (without storage basket) Envelope dimensions max. Organiser system Overall length mm E Overall width mm F Overall height mm P Single Circuit Single Element Single Ribbon Mu
25、ltiple Element Multiple Ribbon F 6 36 NA 216 NA 828 274 152 G 12 72 72 144 24 648 160 150 NOTE Additional information on the organiser system can be found in Annexes C, D, E and F. 5.3 Dimensions of Type 2B closures Figure 3 Outline dimensions of Type 2B closures F EP F EP BS EN 50411-2-3:2012EN 504
26、11-2-3:2012 (E) 17 Table 4 Dimensions of Type 2B closures Closure size Maximum capacity - Number of fibres (without storage basket) Envelope dimensions max. Organiser system Overall length mm E Overall width mm F Overall height mm P Single Circuit Single Element Single Ribbon Multiple Element Multip
27、le Ribbon H 16 96 96 384 1152 557 216 119 J 22 132 132 528 1584 557 216 287 K 40 240 NA 480 NA 557 216 401 L 96 288 NA 648 1152 828 274 254 NOTE Additional information on the organiser system can be found in Annexes C, D, E and F. 6 Tests 6.1 Sample size Separate test samples for sealing performance
28、 and optical evaluation may be used. For the purposes of this standard, a sealing performance test sample is defined as a closure installed with several cable ends. Optical test samples shall be constructed as described in 6.2. Due to their complexity, consecutive testing on the same optical sample
29、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 valve. The length of the cables extending the closure shall be at least 1 m. The open ends of the cables shall be sea
30、led. 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 they will cover all allowed functions of a track joint and/or distribution joint. This shall be realised by building optica
31、l 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 covered in Annex A. Optical test sample construction: Both extremities of a looped cable are terminated in the Track Joint closure (see Figure 4). T
32、he 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 causes of optical losses and differentiate if a change in signal is induced by the organiser system in a single location or distributed over the whol
33、e 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 applied for this purpose. BS EN 50411-2-3:2012EN 50411-2-3:2012 (E) 18 CableLooped cable In Out Tubes Fibres 1 2 3 1 2 3 All fibres spliced in SC,
34、 SE or ME traysTrack joint closureDaniel DaemsConnections to test equipment Figure 4 Track joint configuration sample In the Track Joint closure the fibres from one cable end are connected to the fibres of the other cable end in such a way that light will sequentially flow through 10 selected fibres
35、 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 i
36、n separate circuits. CableCableIn Out Tubes Fibres 1 2 3 1 2 3 All fibres spliced in SC, SE or ME traysTrack joint closureDaniel DaemsConnections to test equipment Uncut fibres stored in SC, SE or ME trays Distribution joint closure Daniel Daems Figure 5 Distribution joint configuration sample In th
37、e middle of the looped cable, the cable jacket will be removed over a distance (= window cut) according to the installation instructions (see Figure 5). The bundle of uncut fibres will be inserted and stored inside the distribution joint closure. If uncut fibres can be stored in different separation
38、 levels (SC, SE, SR, ME or MR) each of these options shall be executed, preferably in separate circuits. A non-active drop cable will be installed in the distribution joint closure and the fibres will be stored randomly on the organiser system in between the uncut fibres. NOTE These fibres will be a
39、ccessed again during the intervention/reconfiguration Test 23. 6.3 Test and measurement methods All tests and measurements have been selected from EN 61300 series. Unless otherwise stated in the individual test details, all attenuation measurements shall be performed at (1 310 25) nm, (1 550 25) nm
40、and (1 625 25) nm for the environmental optical tests, and at (1 550 25) nm and (1 625 25) nm for the mechanical optical tests. All optical losses indicated are referenced to the initial attenuation at the start of the test. BS EN 50411-2-3:2012EN 50411-2-3:2012 (E) 19 An “incoming fibre” is defined
41、 as a part of an optical circuit containing the fibre entering the product, spliced to a fibre leaving the product. One optical circuit can contain many “incoming fibres”. Light will sequentially flow through all “incoming fibres”. No deviation from the specified test method is allowed. 6.4 Test seq
42、uence There is no defined sequence in which Tests 6 - 24 must be run. 6.5 Pass/fail criteria A product will have met the requirements of this specification provided no failures occur in any test. In the event of a failure occurring on a sealing performance test sample, the test shall be re-run using
43、 a sample size double that of the original. Due to the complexity of the optical test samples, consecutive testing on the same optical sample is allowed In case of a failure during the consecutive testing, a new sample shall be prepared and the failed test shall be re-done. 7 Test report A fully doc
44、umented test report and supporting data shall be prepared and must be available for inspection as evidence that the tests described in Clause 8 have been carried out in accordance with this specification. 8 Product qualification requirements 8.1 Dimensional and marking requirements Dimensions and ma
45、rking of the product shall be in accordance with the requirements of Clause 5 and shall be measured using the appropriate EN test method. BS EN 50411-2-3:2012EN 50411-2-3:2012 (E) 20 8.2 Sealing, optical and appearance performance criteria Table 5 Tightness, optical and appearance performance criter
46、ia No. Test Category Requirement Details 1 Sealing performance after test S & A No emission of air bubbles indicating a leak. Method: EN 61300-2-38 Method A Test temperature: (23 3) C Test pressure: Internal overpressure (40 2) kPa Immersion depth: Just below surface of water Duration: 15 min Pre-co
47、nditioning procedure: Sample should be conditioned to room temperature for at least 2 h. 2 Pressure loss during test S Difference in pressure before and after test shall be less than 2 kPa. Measurements taken at same atmospheric conditions Method: EN 61300-2-38 Method B Test temperature: As specifie
48、d by individual test Test pressure: Internal overpressure (40 2) kPa at test temperature Pressure detector: Minimum resolution 0,1 kPa Pre-conditioning procedure: Sample should be conditioned to specified temperature at test pressure for at least 4 h. 3 Visual Appearance S & A No defects which would
49、 affect functionality of the closure Method: EN 61300-3-1 Examination: Product shall be checked with naked eye. 4 Change in attenuation (Note 1, Note 2) S & A Excursion losses: IL 0,2 dB at 1 310 nm and 1 550 nm per incoming fibre during test. IL 0,5 dB at 1 625 nm per incoming fibre during test. Residual losses: IL 0,1 dB at 1 310 nm, 1 550 nm and 1 625 nm per incoming fibre after test.Method: EN 61300-3-3 Method 1 Wavelengths: (1 310
