1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 50411-6-1:2011Fibre organisers and closuresto be used in optical fibrecommunication systems Product specifications -Part 6-1: Unprotected microduct forcategory S and ABS EN
2、 50411-6-1:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN50411-6-1:2011.The UK participation in its preparation was entrusted to TechnicalCommittee GEL/86/2, Fibre optic interconnecting devices and passivecomponents.A list of organizations represented on t
3、his committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 73009 2ICS 33.180.20Compliance with a British Standard cannot confer immunity from
4、legal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2011.Amendments issued since publicationDate Text affectedBS EN 50411-6-1:2011EUROPEAN STANDARD EN 50411-6-1 NORME EUROPENNE EUROPISCHE NORM June 2011 CENELEC European C
5、ommittee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC
6、members. Ref. No. EN 50411-6-1:2011 E ICS 33.180.20 English version Fibre organisers and closures to be used in optical fibre communication systems - Product specifications - Part 6-1: Unprotected microduct for category S and A LWL-Spleikassetten und -Muffen fr die Anwendung in LWL-Kommunikationssys
7、temen - Produktnormen - Teil 6-1: Ungeschtzte Mikrorohre fr die Kategorien S und A This European Standard was approved by CENELEC on 2011-03-21. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status o
8、f 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 v
9、ersion 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, Croati
10、a, 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. BS EN 50411-6-1:2011EN
11、 50411-6-1:2011 - 2 - Foreword This European Standard was prepared by the Technical Committee CENELEC TC 86BXA, Fibre optic interconnects, passive and connectorised components. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 50411-6-1 on 2011-
12、03-21. 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) 2012-03-21 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2014-03-21 _ B
13、S EN 50411-6-1:2011- 3 - EN 50411-6-1:2011 Contents Page 1 Scope . - 4 -2 Normative references . - 4 -3 Terms, definitions and abbreviations - 5 - 3.1 Terms and definitions . - 5 - 3.2 Abbreviations . - 5 -4 Description - 6 -4.1Unprotected microduct . - 6 -4.2D functions - 6 -5 Dimensions unprotecte
14、d microduct . - 6 -5.1Outer v inner diameters - 6 -5.2 hv microduct ovality . - 7 -6 Materials - 7 -7 Tests - 8 -7.1uvvo and marking requirements . - 8 -7.2Burst pressure - 8 -7.3W(uv requirements . - 8 -Annex A (normative) Methods to determine microduct dimensions - 11 -Annex B (normative) Test met
15、hods High pressure resistance Safety . - 13 -BS EN 50411-6-1:2011EN 50411-6-1:2011 - 4 - 1 Scope Product definition This specification contains the initial, start of life dimensional, mechanical and environmental performance requirements which an unprotected microduct must meet. It does not address
16、the installation capability of these products which must be agreed between the user and supplier. Operating environment The tests selected combined with the severities and duration are representative of an outside plant for subterranean and/or aerial environment defined by: ETS 300 019 : class 8.1:
17、underground locations (without earthquake requirement) EN 61753-1 : category S: subterranean environment, category A: aerial environment Quality assurance Compliance with this specification does not guarantee the manufacturing consistency of the product. This should be maintained using a recognised
18、quality assurance programme. Allowed product types This standard covers all European Standard on optical fibre unprotected microducts. This includes, but is not limited to, EN 60794-5, Optical fibre cables - Part 5: Sectional specification - Microduct cabling for installation by blowing. Allowed mic
19、roduct connector types This microduct standard allows the use of all European Standard on microduct connectors, including: straight, reducer/enlarger stem, reducer/enlarger, close down, liquid block, liquid block with barb end, and end stop connectors. This includes EN 50411-2-8, Fibre organisers an
20、d closures to be used in optical fibre communication systems - Product specifications - Part 2-8: Microduct connectors, for air blown optical fibres, Type 1. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only t
21、he edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 60793-1-51 Optical fibres - Part 1-51: Measurement methods and test procedures - Dry heat (IEC 60793-1-51) EN 60794-1-2 Optical fibre cables - Part 1-2: Generic spec
22、ification - Basic optical cable test procedures (IEC 60794-1-2) EN 61300-2-34 Part 2-34: Tests - Resistance to solvents and contaminating fluids of interconnecting components and closures (IEC 61300-2-34) EN 61300-3-1 Part 3-1: Examinations and measurements - Visual examination (IEC 61300-2-31) BS E
23、N 50411-6-1:2011- 5 - EN 50411-6-1:2011 3 Terms, definitions and abbreviations 3.1 Terms and definitions 3.1.1 unprotected microduct small, flexible, lightweight tube with an outer diameter typically less than or equal to 16 mm NOTE Unprotected microducts are designed to be contained within a loose
24、or tight outer layer to form a protected microduct. 3.1.2 protected microduct one or more microducts surrounded by a protective sheath and/or protected by a duct/sub-duct NOTE Alternatively a microduct may be regarded as protected if it has a sufficiently high wall a thickness. 3.1.3 microduct optic
25、al fibre cable optical fibre cable suitable for installation by blowing into a microduct 3.1.4 microduct fibre unit fibre unit that is suitable for installation by blowing into a microduct NOTE It differs from microduct optical fibre cables in that it provides less protection to the fibres that it c
26、ontains. 3.1.5 burst pressure point at which the microduct fails to contain pressure 3.1.6 low friction surface smooth or ribbed internal layer with the purpose to reduce the friction coefficient between microduct and cable/fibre unit 3.1.7 anti static surface internal layer with the purpose to redu
27、ce the antistatic forces between the microduct and the cable/fibre unit 3.2 Abbreviations PS Product Specification MD Microduct PM Protected Microduct ABF Air Blown Fibre ID Inside Diameter OD Outside Diameter BS EN 50411-6-1:2011EN 50411-6-1:2011 - 6 - 4 Description 4.1 Unprotected microduct Figure
28、 1 Cross section of typical unprotected microduct 4.2 Microduct functions An unprotected microduct contains one or more fibre units or optical cables. 5 Dimensions unprotected microduct 5.1 Outer and inner diameters The OD and ID of the unprotected microduct shall be in accordance with Table 1. The
29、tolerance of outer and inner diameters shall be 0,1 mm for microducts with an outer diameter of 8 mm and 0,2 mm for the outer diameters of microducts 8 mm up to and including 16 mm outer diameter (the inner diameter tolerance remains at 0,1 mm). The method used to determine microduct size shall not
30、disturb the geometry of the product. Microduct wallOptional low friction and/or anti-static surfaceBS EN 50411-6-1:2011- 7 - EN 50411-6-1:2011 Table 1 Unprotected microduct dimensions Nominal size (OD/ID) mm OD (min.) mm OD (max.)mm Wall (min.)mm ID (min.)mm 3/2,1 2,9 3,1 0,45 2,04/2,5 3,9 4,1 0,75
31、2,4 4/2,8 and 4/3 3,9 4,1 0,60 2,75/3,5 4.9 5,1 0,75 3.46/4 5,9 6,1 1,00 3,9 7/4 6,8 7,2 1,45 3,97/5,5 6,9 7,1 0,75 5,48/6 7,9 8,1 1,00 5,9 10/6 (see Note) 9,8 10,2 1,95 5,9 10/8 9,8 10,2 0,95 7,912/8 (see Note) 11,8 12,2 1,95 7,9 12/9 11,8 12,2 1,45 8,912/9,4 11,8 12,2 1,25 9,312/9,8 11,8 12,2 1,05
32、 9,7 12/10 11,8 12,2 0,95 9,914/10 (see Note) 13,8 14,2 1,95 9,9 14/11 13,8 14,2 1,45 10,915/12 14,8 15,2 1,45 11,916/13 15,8 16,2 1,45 12,9 NOTE These sizes are for reference only as they are thick walled products and may be used as protected microduct (wall 2 mm); they are provided in this table f
33、or interfacing with microduct connectors EN 50411-2-8:2008. The outer and inner dimensions may be measured using the methods shown in Annex A. 5.2 Unprotected microduct ovality Microduct Ovality (E) shall be determined by the following equation: E = (ODmax min ODmin)/ODmean 100 % where ODmax is the
34、maximum outer diameter; ODminis the minimum outer diameter; ODmean is the mean outer diameter. Before coiling onto the drum the maximum ovality shall be 5 % when measured prior to coiling. After dispensing product from the drum the maximum ovality shall be 15 %. 6 Materials Unprotected microducts ar
35、e typically produced from virgin LDPE, LLDPE, MDPE, HDPE or PP (no re-grind content). Other materials may be used subject to compatibility testing. Internal and external coatings may be applied to the wall material provided the tolerances and performance criteria of this specification are maintained
36、. BS EN 50411-6-1:2011EN 50411-6-1:2011 - 8 - 7 Tests 7.1 Dimensional and marking requirements Dimensions and marking of the product shall be in accordance with the requirements of the product specifications listed in Clause 5, and shall be measured and inspected using the appropriate EN test method
37、. 7.2 Burst pressure The instantaneous burst pressure for any microduct shall be a minimum of 18 bar (1,8 MPa) measured at 20 C. 7.3 Performance requirements The unprotected microduct shall meet the following performance tests. BS EN 50411-6-1:2011- 9 - EN 50411-6-1:2011 Table 2 Performance requirem
38、ents No. Test Requirement Details 1 Visual Examination Product shall be free from water splash marks, die marks, pin holes cracks or other defects. Product shall meet the dimensional requirements of Clause 5 Method: EN 61300-3-1 Examination Product shall be checked with naked eye without magnificati
39、on. 2 Burst pressure (See Annex B) Method: Annex B Temperature: (23 2) C Pressure: 1,8 MPa (18 bar) Duration: 30 min 3 Tensile performance Visual examination (test 1). There shall be no damage after the test Method: EN 60794-1-2, Method E1 Length: 0,2 m minimumLoad: Sufficient to cause 7 % elongatio
40、n Rate: 5 mm/min4 Kink Visual examination (test 1). There shall be no damage to the microducts after the test. During the test, the microduct shall attain the required minimum diameter without kinking Method: EN 60794-1-2, Method E10 Temperature: (23 3) C Minimum diameter: 20 times the OD of the mic
41、roduct 5 Crush Visual examination (test 1). There shall be no damage to the microduct. The imprint of the plate is not considered as mechanical damage. Method: EN 60794-1-2, Method E3 Sample length 250 mm Load: 50 OD N (OD in millimetres) or 450 N, whichever is lower, for 1 min Recovery time: 1 h 6
42、Impact Visual examination (test 1) after the recovery time. There shall be no damage to the microduct. The imprint of the striking surface is not considered as mechanical damage. Method: EN 60794-1-2, Method E4 Striking surface radius 10 mm Impact energy: 1 J for 5 mm OD microduct; 0,5 J for 15 %. M
43、ethod: EN 60794-1-2, Method E11 Diameter of mandrel: 40 OD Number of turns/helix 10 Number of cycles:3 8 Ageing After exposure to the test condition the microduct shall meet the burst pressure and dimensional requirements of Clause 6Method: EN 60793-1-51 dry heat Temperature: 60 C Duration: Three mo
44、nths 9 Resistance to solvents and contaminating fluids After exposure to the test condition the microduct shall meet the burst pressure and dimensional requirements of Clause 6Method: EN 61300-2-34 Test temperatures: (23 3) C Submersion in: HCl at pH 2 NaOH at pH 12 Kerosene (lamp oil) ISO 1998/I 1.
45、005 Petroleum jelly Diesel fuel for cars EN 590Immersion depth: Just underneath surface, but fully immersed or covered by fluid. Duration: Five days Drying time: None 10 Resistance to solvents and contaminating fluids-stress cracking solvent After exposure to the test condition the microduct shall m
46、eet the burst pressure (test 2) and dimensional requirements of Clause 6Method: EN 61300-2-34 Test temperatures: (50 2) C Submersion in: 10 % detergent solution of Nonyl Phenol Ethoxylate (Igepal) Immersion depth: Just underneath surface, but fully immersed. Duration: Five daysDrying time: None BS E
47、N 50411-6-1:2011- 11 - EN 50411-6-1:2011 Annex A (normative) Methods to determine microduct dimensions A.1 Outer Dimensions The outer diameter is measured with a snap gauge. Figure A.1 The measurement is done as follows: clamp a piece of tube in the apparatus; turn the tube carefully around; note th
48、e lowest reading (Dmin) and the highest reading (Dmax) the average outside diameter is calculated and shown in the appropriate column; the lowest reading may never be lower than the lower specification for the tubing. A.2 Inner dimensions A plug gauge is used to check that the internal diameter of t
49、he tube is correct. The illustration shows a multiple tube size gauge, single size gauges may also be used. A B C D E F Figure A.2 BS EN 50411-6-1:2011EN 50411-6-1:2011 - 12 - Figure A.3 Gently place the plug gauge into the tube until it stops. DO NOT FORCE IT. Attention: Be sure you have the correct end of the gauge. There are various plug gauges ma
