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1、BRITISH STANDARD BS EN 61300-2-37:2007 Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-37: Tests Cable bending for fibre optic closures The European Standard EN 61300-2-37:2007 has the status of a British Standard ICS 33.180.20 ? Licensed Copy:
2、 London South Bank University, London South Bank University, Sat Mar 17 03:57:29 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 61300-2-37:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 March 2007 BSI 2007 ISBN 978 0 580 50308 5 Na
3、tional foreword This British Standard was published by BSI. It is the UK implementation of EN 61300-2-37:2007. It is identical with IEC 61300-2-37:2006. It supersedes BS EN 61300-2.37:1997 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee GEL/86, Fibre
4、optics, to Subcommittee GEL/86/2, Fibre optic interconnecting devices and passive components. A list of organizations represented on GEL/86/2 can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible fo
5、r its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank University, Sat Mar 17 03:57:29 GMT+00:00 2007, Uncontrolled Copy, (c)
6、 BSI EUROPEAN STANDARD EN 61300-2-37 NORME EUROPENNE EUROPISCHE NORM January 2007 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussel
7、s 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61300-2-37:2007 E ICS 33.180.20 Supersedes EN 61300-2-37:1997 English version Fibre optic interconnecting devices and passive components - Basic test and measurement procedure
8、s - Part 2-37: Tests - Cable bending for fibre optic closures (IEC 61300-2-37:2006) Dispositifs dinterconnexion et composants passifs fibres optiques - Mthodes fondamentales dessais et de mesures - Partie 2-37: Essais - Efforts de flexion sur le cble pour les botiers de fibres optiques (CEI 61300-2-
9、37:2006) Lichtwellenleiter - Verbindungselemente und passive Bauteile - Grundlegende Prf- und Messverfahren - Teil 2-37: Prfungen - Kabelbiegung bei Muffen (IEC 61300-2-37:2006) This European Standard was approved by CENELEC on 2006-11-01. CENELEC members are bound to comply with the CEN/CENELEC Int
10、ernal 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 Central Secretariat or to any CENELEC
11、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 Central Secretariat has the same status as the official versions. CEN
12、ELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovaki
13、a, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: London South Bank University, London South Bank University, Sat Mar 17 03:57:29 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Foreword The text of document 86B/2366/FDIS, future edition 2 of IEC 61300-2-37, prepared by SC 86
14、B, Fibre optic interconnecting devices and passive components, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61300-2-37 on 2006-11-01. This European Standard supersedes EN 61300-2-37:1997. Specific technical changes from EN 61300-2-37:19
15、97 include tests on functions of the closure to protect, secure and store passive fibre optic components (splices, connectors, branching devices) when the cable entering or exiting fibre optic closure is subjected to bending. The following dates were fixed: latest date by which the EN has to be impl
16、emented at national level by publication of an identical national standard or by endorsement (dop) 2007-08-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2009-11-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the Internation
17、al Standard IEC 61300-2-37:2006 was approved by CENELEC as a European Standard without any modification. _ EN 61300-2-37:2006 2 Licensed Copy: London South Bank University, London South Bank University, Sat Mar 17 03:57:29 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 3 EN 61300-2-37:2006 CONTENTS 1 Sc
18、ope 4 2 Normative references .4 3 Terms and definitions .4 4 General description 5 4.1 Specimen5 4.2 Test procedure5 5 Apparatus 5 6 Procedure 6 6.1 Preparation of the specimen 6 6.2 Pre-conditioning 6 6.3 Initial merasurents.6 6.4 Conditioning6 6.5 Bending procedure 6 6.6 Recovery.7 6.7 Final measu
19、rements 7 7 Severity7 8 Details to be specified in the test report7 Bibliography .8 Annex ZA (normative) Normative references to international publications with their corresponding European publications 9 Licensed Copy: London South Bank University, London South Bank University, Sat Mar 17 03:57:29
20、GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 61300-2-37:2006 4 FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS BASIC TEST AND MEASUREMENT PROCEDURES Part 2-37: Tests Cable bending for fibre optic closures 1 Scope This part of IEC 61300, when required by the relevant specification, evalua
21、tes the effectiveness of the sealing and clamping hardware of a fibre optic closure that functions to protect, secure and store passive fibre optic components (splices, connectors, branching devices) when the cable entering or exiting fibre optic closure is subjected to bending. 2 Normative referenc
22、es 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. IEC 61300-1, Fibre optic interconnecting devic
23、es and passive components Basic test and measurements procedures Part 1: General and guidance IEC 61300-2-38, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-38: Tests Sealing for pressurized closures of fibre optic devices IEC 61300-3-1, Fibre
24、 optic interconnecting devices and passive components Basic test and measurement procedures Part 3-1: Examinations and measurements Visual examination IEC 61300-3-3, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3-3: Examinations and measuremen
25、ts Active monitoring of changes in attenuation and return loss IEC 61300-3-28, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3-28: Examinations and measurements Transient loss 3 Terms and definitions 3.1 closure all external housings except out
26、door cabinets 3.2 climatic chamber chamber needed for conditioning the device under test Licensed Copy: London South Bank University, London South Bank University, Sat Mar 17 03:57:29 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 5 EN 61300-2-37:2006 3.3 holding fixture fixture for mounting the specime
27、n 3.4 bending device device for applying a controlled bending moment to the cable 4 General description 4.1 Specimen The specimen is defined as an assembled closure with cable comprising all necessary parts for the required function. 4.2 Test procedure The specimen shall be securely fixed and placed
28、 in a conditioning chamber. The cable shall be subjected to a specified number of bending cycles. A bending cycle shall consist of a bend in one direction followed by an equal bend in the opposite direction and a return to the original position. A force adequate to produce the specified bending shal
29、l be applied smoothly and in a controlled manner to the cable at the specified distance from the closure outlet. Examinations and measurements for damage of the cable, the closure, and the cable- to-closure seal as well as hardware failure inside closure shall be made after the test. 5 Apparatus An
30、example of the test apparatus is given in Figure 1. 30 30 Cable Cable Bending device Clamping device Cyclic rotation drive unit Holding fixture Side view Front view Closure Climatic chamber Climatic chamber IEC 1767/06 Figure 1 Test apparatus Licensed Copy: London South Bank University, London South
31、 Bank University, Sat Mar 17 03:57:29 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 61300-2-37:2006 6 The test apparatus consists of the following elements. holding fixture; bending device; climatic chamber. 6 Procedure 6.1 Preparation of the specimen At room temperature assemble a number of closure
32、s as defined in the relevant specification, using the largest diameter of the cable for which the specimen is designed, following the manufacturers intructions. Mount the specimen to the holding fixture so that it lies on a smooth, flat and horizontal surface. Attach the cable to the device for appl
33、ying the bending moment. If nothing else is specified, clamp the cable at 400 mm (for cables with outside diameter larger than 25 mm the length may be increased to 1 000 mm) from the end of the cable seal. Generally the clamping place shall be defined according to cable stiffness. Connect the cable/
34、fibres of the device under test to the optical circuit (if required). The number of the ports of the specimen to be used and the configuration of the optical circuit shall be specified in the relevant specification. NOTE The test procedure user should note that worst case conditions will depend on c
35、able stiffness, not on cable diameter. 6.2 Pre-conditioning Place the device under test with the holding fixture in a climatic chamber and pre-condition it for 4 h at the standard test conditions specified in IEC 61300-1 unless otherwise specified in the relevant specification. 6.3 Initial measureme
36、nts Complete initial examinations and measurements on the specimen as required by the relevant specification. 6.4 Conditioning The following procedure shall be accomplished: condition the sample to the test temperature; pressurize the closure to the specified pressure, if required; measure the press
37、ure according to test method B of IEC 61300-2-38. Conditioning of the specimen at other lower and/or higher temperatures shall be specified in the relevant specification. 6.5 Bending procedure The clamping place shall be defined according to the cable stiffness. Bend each cable to an angle of 30 wit
38、h a maximum applied force of 500 N (see Figure 1). If required, maintain the cable bend for a specified time in each direction. Apply the specified number of bending cycles. If required, make the transient loss measurement during the test according to IEC 61300-3- 28. Licensed Copy: London South Ban
39、k University, London South Bank University, Sat Mar 17 03:57:29 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 7 EN 61300-2-37:2006 Measure the pressure again according to test method B of IEC 61300-2-38 . The procedure shall be repeated after conditioning at the higher temperature. Unless otherwise spe
40、cified, repeat the test for each cable protruding from the closure. 6.6 Recovery Allow the specimen to recover under standard test conditions for 2 h, as defined in IEC 61300-1, unless otherwise specified in the relevant specification. 6.7 Final measurements On completion of the test, make the final
41、 measurements, as defined in the relevant specification. The results of the final measurement shall be within the limit established in the relevant specification. The variation of the attenuation shall be measured according to IEC 61300-3-3. In addition, visually examine the specimen in accordance w
42、ith IEC 61300-3-1. Check for evidence of any degradation in the device under test. This may include, for example: broken, loose or damaged parts or accessories; breaking or damage to the cable jacket, seals, cable clamps. Pressure loss shall be checked according to test method A of IEC 61300-2-38. 7
43、 Severity The severity is determined by the number and direction of cable bends, test temperature and overpressure. The severity shall be specified in the relevant specification. Recommended values of the test parameters are given below: Number of cable bend cycles: 5 cycles per cable per test tempe
44、rature Overpressure in the closure: 0 kPa or 40 kPa Test temperatures: 15 C and 45 C 8 Details to be specified in the test report The following details, as applicable, shall be specified in the relevant specification: type, diameter and length of cable to be used; number of cables entering or exitin
45、g the closure to be tested; specimen mounting instructions; rate of bending and any stops or holding periods during the cycle; clamping place of the cable; configuration of the monitoring circuit for optical measurements; initial examinations and measurements and performance requirements; optical me
46、asurements and performance requirements during the test (if required); final examinations and measurements and performance requirements; deviations from the test procedure; additional pass/fail criteria. Licensed Copy: London South Bank University, London South Bank University, Sat Mar 17 03:57:29 G
47、MT+00:00 2007, Uncontrolled Copy, (c) BSI EN 61300-2-37:2006 8 Bibliography IEC 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 _ NOTE Harmonized as EN 61300-2-23
48、:1997 (not modified). Licensed Copy: London South Bank University, London South Bank University, Sat Mar 17 03:57:29 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 9 EN 61300-2-37:2006 Annex ZA (normative) Normative references to international publications with their corresponding European publications
49、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. NOTE When an international publication has been modified by common mod