《BS-EN-61300-2-5-1997 IEC-61300-2-5-1995.pdf》由会员分享，可在线阅读，更多相关《BS-EN-61300-2-5-1997 IEC-61300-2-5-1995.pdf（12页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 61300-2-5:1997 IEC 61300-2-5: 1995 Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-5: Tests Torsion/twist The European Standard EN 61300-2-5:1997 has the status of a British Standard ICS 33.180.20 Licensed Copy: sheffield
2、un sheffieldun, na, Sat Nov 11 12:37:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61300-2-5:1997 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 October 1
3、997 BSI 09-1999 ISBN 0 580 28553 7 National foreword This British Standard is the English language version of EN 61300-2-5:1997. It is identical with IEC 61300-2-5:1995. The UK participation in its preparation was entrusted by Technical Committee EPL/86, Fibre optics, to Subcommittee EPL/86/2, Inter
4、connecting devices and passive components, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related internationa
5、l and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC
6、60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to internatio
7、nal publications with their corresponding or European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facilit
8、y of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligatio
9、ns. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 6 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the insi
10、de front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:37:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61300-2-5:1997 BSI 09-1999i Contents Page National forewordInside front cover Foreword2 Text of EN 61300-2-53 Lice
11、nsed Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:37:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:37:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61300-2-5 July 1997 ICS 33.1
12、80.20 English version Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-5: Tests Torsion/twist (IEC 61300-2-5:1995) Dispositifs dinterconnexion et composants passifs fibres optiques Mthodes fondamentales dessais et de mesures Partie 2-5: Essais T
13、orsion/rotation (CEI 61300-2-5:1995) Lichtwellenleiter Verbindungselemente und passive Bauteile Grundlegende Prf- und Meverfahren Teil 2-5: Prfungen Torsion (IEC 61300-2-5:1995) This European Standard was approved by CENELEC on 1997-07-01. CENELEC members are bound to comply with the CEN/CENELEC Int
14、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
15、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
16、ELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization
17、 Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1997 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61300-2-5:1997 E License
18、d Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:37:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61300-2-5:1997 BSI 09-1999 2 Foreword The text of the International Standard IEC 61300-2-5:1995, prepared by SC 86B, Fibre optic interconnecting devices and passive components, of IEC TC 86, Fibre
19、optics, was submitted to the formal vote and was approved by CENELEC as EN 61300-2-5 on 1997-07-01 without any modification. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. In this standard, Annex ZA is normative. Annex ZA has been added by CENELE
20、C. Endorsement notice The text of the International Standard IEC 61300-2-5:1995 was approved by CENELEC as a European Standard without any modification. Contents Page Foreword2 1General3 2Apparatus3 3Procedure3 4Severity5 5Details to be specified5 Annex ZA (normative) Normative references to interna
21、tional publications with their corresponding European publications6 Figure 1 Test set-up4 Table 1 Tensile loads4 latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 1998-06-01 latest date by which the national st
22、andards conflicting with the EN have to be withdrawn(dow) 1998-06-01 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:37:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61300-2-5:1997 BSI 09-19993 1 General 1.1 Scope and object The purpose of this test is to determine the ability of the ca
23、ptivation or attachment of the cable to the device under test to withstand torsional loads while under tension as might be experienced during installation and normal service. 1.2 General description The cable-to-device interface, while under a specified tension, is subjected to a torsional load or t
24、wisting action to determine the effects of this action on the physical and optical properties of the device. 1.3 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 1300. At the time of publication
25、, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this part of IEC 1300 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintai
26、n registers of currently valid International Standards. IEC 1300-1, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 1: General guidance. IEC 1300-3, Fibre optic interconnecting devices and passive components Basic test and measurement procedures
27、Part 3: Examinations and measurements. 2 Apparatus The test apparatus shall be capable of applying simultaneously both tension and a torsional load or twisting action to the cable-to-device interface. Figure 1 shows the basic parts of a test apparatus. 2.1 Mounting fixture A mounting fixture for rig
28、idly mounting the device under test and holding it in proper alignment throughout the test. The fixture shall allow the device under test to be connected to a source and detector for monitoring attenuation. 2.2 Cable clamp The cable clamp shall be capable of grasping and securing the cable so that i
29、t, does not turn or slip in the holder when loads are applied. The clamp shall not crush the optical fibres or cause an unacceptable change in the attenuation. The cable clamp is the point at which the torsional load is applied. The cable clamp may consist of a mandrel around which several turns of
30、cable are wrapped and secured. 2.3 Weights Weights or another mechanism for applying a tensile load to the cable clamp are required. 2.4 Torque applicator and gauge If the cable being tested is stiff and a specified torque rather than degrees of rotation is called for, the following shall apply. Tor
31、que shall be applied using a torque wrench or equivalent and a torque gauge having a torque range of no more than three times the required torque test value. A maximum reading torque indicator is desired but not required. The gauge shall be accurate within 10 % of the applied torque value. 3 Procedu
32、re 3.1 Preparation of specimens Prepare the specimens according to the manufacturers instructions or as specified in the detail specification. 3.2 Pre-conditioning Unless otherwise specified in the detail specification, pre-condition the device under test for 4 h at the standard test conditions spec
33、ified in IEC 1300-1. Measure and record the attenuation of the device. 3.3 Mount the device under test The body of the specimen shall be rigidly mounted to a holding plate which is secured in a fixed position (see Figure 1). The clamp to which the load can be applied shall be fastened to the cable i
34、n such a manner that the optical fibre or cable is not crushed. Unless otherwise specified, the top of the cable clamp shall be ten times the cable diameter from the end of the strain relief, if used (see Figure 1). If there is no strain relief, the end of the specimen nearest the cable clamp shall
35、be the reference. 3.4 Measure the attenuation Re-measure the attenuation to ensure that the fixturing and cable clamping have not affected the cables attenuation beyond the specified acceptable limit. 3.5 Apply cable load Gradually apply the tensile load recommended in Table 1 or as specified in the
36、 detail specification to the cable clamping fixture, being careful to avoid any sudden jerking or straining of the cable. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:37:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61300-2-5:1997 4 BSI 09-1999 Table 1 Tensile loads 3.6 Measure the a
37、ttenuation After the load is applied, re-measure the attenuation of the specimen. This value shall be recorded and used as a reference to determine the effects of the twisting motion. 3.7 Twist the cable Apply a twisting motion to the cable clamping device being careful to control the vertical and h
38、orizontal motion of the load. One twist cycle shall consist of motion in one direction, motion in the opposite direction, and return to the original position. Unless otherwise specified, a test cycle shall consist of a twist of 90 in one direction followed by a twist of 180 in the opposite direction
39、, and concluding with a twist back to the starting position. Where rigid cable is used, a specified torque value shall be used in place of the degrees of rotation. Repeat the test cycle ten times unless specified otherwise. When more than ten cycles are required, the twist rate shall be 30 cycles pe
40、r min, unless specified otherwise. 3.8 Monitor the attenuation Unless otherwise specified in the detail specification, the attenuation of the specimen shall be monitored as described in IEC 1300-3. Any deviation in the device attenuation from that measured in 3.6 shall be considered attributable to
41、the cable/device interface, fibre-to-fibre interfaces or fibre-to-source/detector interfaces in the device, NOTEIf there are unacceptable changes in attenuation and it is questionable whether the cable itself may be at fault, a control test to determine cable contribution may be performed in the sam
42、e manner using a piece of cable and two cable clamps. 3.9 Final measurements and examinations After the twist portion of the test is complete, remove all fixtures and make a final attenuation measurement to ensure that there is no permanent damage to the device. The results of the final measurement
43、shall be within the limit established in the detail specification. Remove the device from the mounting fixture and, unless otherwise specified, visually examine the specimens in accordance with IEC 1300-3-1. Check for evidence of the following: broken, loose or damaged parts or accessories; breaking
44、 or damage to the cable jacket, seals, strain relief, or fibres; displaced, bent, broken or chipped parts; scratching of any interface areas. Figure 1 Test set-up Nominal cable diameter mm Recommended load kg k 2,5 de 2,6 to 4,0 de 4,1 to 6,0 de 6,1 to 9,0 de 9,1 to 13,0 de 13,1 to 18,0 de 18,1 to 2
45、4,0 de 24,1 to 30,0 U 30,1 1,5 2,5 4,0 4,5 5,0 5,5 6,5 7,0 7,5 NOTESmaller cables without strength members may require loads under 1,5 kg. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:37:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61300-2-5:1997 BSI 09-19995 4 Severity The severity
46、 of the test is dependent upon the tensile load applied, the degrees of rotation of the cable or the torque applied to the cable, and the number of cycles of rotation or application of the torque. 5 Details to be specified The following details, as applicable, shall be given in the detail specificat
47、ion: Tensile load applied to the cable Twist cycle if other than as described in 3.7 Number of cycles if other than 10 Location of cable clamp if other than as specified in 3.3 Specimen functioning or non-functioning Pre-conditioning procedure Recovery procedure Initial examinations and measurements
48、 and performance requirements Examinations and measurements during test and performance requirements Final examinations and measurements and performance requirements Optical measurement method, if necessary Deviations from the test procedure Additional pass/fail criteria Licensed Copy: sheffieldun s
49、heffieldun, na, Sat Nov 11 12:37:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61300-2-5:1997 6 BSI 09-1999 Annex ZA (normative) Normative references to international publications with their corresponding European publications This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendm