1、 IEC 60793-1-51 Edition 2.0 2014-02 INTERNATIONAL STANDARD NORME INTERNATIONALE Optical fibres Part 1-51: Measurement methods and test procedures Dry heat (steady state) tests Fibres optiques Partie 1-51: Mthodes de mesure et procdures dessai Essais de chaleur sche (tat continu) IEC 60793-1-51:2014-
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19、 - webstore.iec.ch/csc Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 60793-1-51 Edition 2.0 2014-02 INTERNATIONAL STANDARD NORME INTERNATIONALE Optical fibres Part 1-51: Measurement methods and test procedures Dry heat
20、(steady state) tests Fibres optiques Partie 1-51: Mthodes de mesure et procdures dessai Essais de chaleur sche (tat continu) INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE G ICS 33.180.10 PRICE CODE CODE PRIX ISBN 978-2-8322-1375-9 Registered trademark of the In
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22、 60793-1-51 IEC:2014 CONTENTS FOREWORD . 3 1 Scope 5 2 Normative references 5 3 Apparatus 5 3.1 Chamber 5 3.2 Other apparatus . 5 4 Sampling and specimens . 6 5 Procedure 6 5.1 General 6 5.2 Optical measurements . 6 5.3 Preconditioning 6 5.4 Conditioning . 6 5.5 Recovery . 7 6 Pass/fail criteria . 7
23、 7 Results 7 7.1 Information to be provided with each test . 7 7.2 Information to be available upon request 7 8 Specification information . 7 60793-1-51 IEC:2014 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL FIBRES Part 1-51: Measurement methods and test procedures Dry heat (steady state) te
24、sts FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in
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33、ublication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the pos
34、sibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60793-1-51 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical committee
35、86: Fibre optics. This second edition cancels and replaces the first edition, published in 2001, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: harmonizing the content with sectional specifications of rele
36、vant fibre types; extending the applicability of the document to class C single-mode fibres. 4 60793-1-51 IEC:2014 The text of this standard is based on the following documents: CDV Report on voting 86A/1527/CDV 86A/1573/RVC Full information on the voting for the approval of this standard can be fou
37、nd in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 60793 series, published under the general title Optical fibres, can be found on the IEC website. The committee has decided that
38、 the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. IMPOR
39、TANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. 60793-1-51 IEC:2014 5 OPTICAL FIBRES Part 1-51: Mea
40、surement methods and test procedures Dry heat (steady state) tests 1 Scope This part of IEC 60793 provides a practical method for evaluating fibre performance in a defined environment. The purpose of this standard is to determine the suitability of optical fibre sub-category A1a to A1d multimode fib
41、res and class B and C single-mode fibres to withstand the environmental condition of high temperature (dry heat) which may occur in actual use, storage and/or transport. The test is primarily intended to permit the observation of effects of high temperature over a given period. This procedure is con
42、ducted in accordance with IEC 60068- 2-2, Test Bd. NOTE The applicability of this test to other fibre categories is under study. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For
43、 undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60068-2-2, Environmental testing Part 2-2: Tests Test B: Dry heat IEC 60793-1-40:2001, Optical fibres Part 1-40: Attenuation measurement methods IEC 60793-2-10, Optical fibres Part 2-50: Produc
44、t specifications Sectional specification for category A1 multimode fibres IEC 60793-2-50, Optical fibres Part 2-50: Product specifications Sectional specification for class B single-mode fibres IEC 60793-2-60, Optical fibres Part 2-60: Product specifications Sectional specification for class C singl
45、e-mode intraconnection fibres 3 Apparatus 3.1 Chamber The apparatus consists of an environmental chamber in accordance with IEC 60068-2-2, Test Bd. The chamber shall be capable of housing the specimen, without subjecting it to direct radiant heat, and of allowing access for measurement during condit
46、ioning. It shall also be capable of maintaining the specified temperature within the specified tolerances. Forced air circulation may be used to maintain homogeneous conditions. 3.2 Other apparatus Additional apparatus may be necessary to perform the examinations and measurements (or as specified in
47、 the detail specification). 6 60793-1-51 IEC:2014 4 Sampling and specimens For optical measurements, the length of the specimen shall be at least 1 000 m for fibre sub- categories A1a to A1d, and at least 2 000 m for fibre class B and C, to allow the required measurement repeatability. The amount of
48、 the specimen outside of the test chamber shall be minimized, and if it exceeds 10 % of the overall specimen length, this should be reported. The preparation of the specimen shall have no detrimental effect on the fibre whilst under test conditions. Unless otherwise defined in the detail specificati
49、on, it is recommended that the fibre sample be loosely coiled and dusted with a material such as talcum powder, to allow the coils to move freely against each other. The specimen may be coiled horizontally or vertically, with a minimum bend diameter of 150 mm to avoid any macrobend effects. A control length of the specimen shall be removed prior to the test to enable the completion of required mech
