IEC 61300-2-28-2013 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-28 Tests - Industrial atmosphere.pdf

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1、 IEC 61300-2-28 Edition 2.0 2013-07 INTERNATIONAL STANDARD Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-28: Tests Industrial atmosphere (sulphur dioxide) IEC 61300-2-28:2013(E) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2013 IEC, Gene

2、va, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IECs member National Committee in t

3、he country of the requester. If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC member National Committee for further information. IEC Central Office Tel.: +41 22 919 02 11 3, rue

4、de Varemb Fax: +41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzerland www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies. About

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7、w publications released. Available on-line and also once a month by email. Electropedia - www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 30 000 terms and definitions in English and French, with equivalent terms in additional language

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9、NTERNATIONAL STANDARD Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-28: Tests Industrial atmosphere (sulphur dioxide) INTERNATIONAL ELECTROTECHNICAL COMMISSION G ICS 33.180.20 PRICE CODE ISBN 978-2-8322-0923-3 Registered trademark of the Inte

10、rnational Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. 2 61300-2-28 IEC:2013(E) CONTENTS FOREWORD . 3 1 Scope . 5 2 Normative references 5 3 General description . 5 4 Apparatus . 5 5 Procedure . 6 5.1 General . 6 5.2 Preconditionin

11、g 6 5.3 Measurements . 6 5.4 Recovery . 6 5.5 Final examinations and measurements 7 6 Severity 7 7 Details to be specified . 7 Table 1 Severities for Category E . 7 61300-2-28 IEC:2013(E) 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS BASIC T

12、EST AND MEASUREMENT PROCEDURES Part 2-28: Tests Industrial atmosphere (sulphur dioxide) 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

13、to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and

14、Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the

15、IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly a

16、s possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sen

17、se. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees und

18、ertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any at

19、testation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest editio

20、n of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direc

21、t or indirect, or for costs (including legal fees) and expenses arising out of the publication, 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 indispensab

22、le for the correct application of this publication. 9) Attention is drawn to the possibility 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 61300-2-28 h

23、as been prepared by subcommittee 86B: Fibre optic interconnecting devices and passive components, of IEC technical committee 86: Fibre optics. This second edition cancels and replaces the first edition published in 1995. It constitutes a technical revision. The main change with respect to the previo

24、us edition is the reconsideration of Clauses 5 and 6, Procedure and Severity, respectively. 4 61300-2-28 IEC:2013(E) The text of this standard is based on the following documents: FDIS Report on voting 86B/3619/FDIS 86B/3651/RVD Full information on the voting for the approval of this standard can be

25、 found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The list of all parts of IEC 61300 series, published under the general title, Fibre optic interconnecting and passive components Basic test and measuremen

26、t procedures, can be found on the IEC website. The committee has decided that 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 wil

27、l be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. 61300-2-28 IEC:2013(E) 5 FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS BASIC TEST AND MEASUREMENT PROCEDURES Part 2-28: Tests Industrial atmosph

28、ere (sulphur dioxide) 1 Scope The purpose of this part of IEC 61300 is to assess the corrosive effects of atmospheres polluted with sulphur dioxide on fibre optic devices. The procedure is only suitable for comparative purposes. It can be considered a general corrosion test, but which does not predi

29、ct the behaviour of the devices in use. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the

30、referenced document (including any amendments) applies. IEC 60068-2-42, Environmental testing Part 2-42: Tests Test Kc: Sulphur dioxide test for contacts and connections IEC 61300-1, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 1: General and

31、guidance IEC 61300-3-1, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3-1: Examinations and measurements Visual examination 3 General description This test is intended to provide accelerated means to assess the corrosive effects of atmospheres

32、polluted with sulphur dioxide on fibre optic devices, is particularly suitable for giving information on a comparative basis, is not suitable as a general corrosion test, i.e. it may not predict the behaviour of fibre optic devices in industrial atmospheres. 4 Apparatus The apparatus consists of a t

33、est chamber in accordance with IEC 60068-2-42, Test Kc. The test chamber and its auxiliary parts shall be made of materials that do not react with or absorb sulphur dioxide and which do not influence the corrosive effects of the test atmosphere. The mixture of air and sulphur dioxide shall enter and

34、 leave the chamber through tubes with sufficiently large diameters such that the total flow through the chamber is at least three, but not more than five, changes of the atmosphere per hour. The exhaust from the chamber should not be allowed to enter the laboratory. The detailed construction of the

35、chamber including the method of producing the test atmosphere is optional provided that 6 61300-2-28 IEC:2013(E) a) the conditions in that part of the chamber occupied by the specimens are within the specified limits, b) the specimens under test are protected from direct exposure to the incoming gas

36、 flow, c) arrangements are made to move the specimens through the test atmosphere at an average rate of 20 m/h to 60 m/h (approximately 6 mm/s to 17 mm/s) or, alternatively, to gently stir the atmosphere, obtaining a similar relative velocity between atmosphere and specimens, d) condensation on the

37、specimen does not occur inside the test chamber. 5 Procedure 5.1 General Prepare the specimen according to the manufacturers instructions or as specified in the relevant specification. The specimen shall be terminated with a sufficient length of fibre cable to facilitate connection with the optical

38、source and detector. 5.2 Preconditioning Clean the mechanical and optical alignment parts of the specimen according to the manufacturers instructions. Unless otherwise stated, maintain the specimen under standard atmospheric condition according to IEC 61300-1 for 2 h minimum. 5.3 Measurements Place

39、the specimens in the chamber in its normal operating position and make connections to the monitoring equipment. Prior to the start of the test it shall be established by suitable measurements that a stable conditions for the concentration of sulphur dioxide, the temperature and the relative humidity

40、 have been achieved. Periodic checks shall be made during test to ensure that these conditions are maintained. Care should be taken that the specimens are so placed that they do not come into contact with one another and that they do not shield one another from the test atmosphere. Adequate precauti

41、ons shall be taken to ensure that the specimens are not disturbed during exposure period. Specimens shall be exposed mated and/or unmated as prescribed in the relevant specification. The specimens shall be operational and/or not operational according to relevant specifications. The specimens shall b

42、e continuously exposed to the test atmosphere for the period specified by the relevant specification. 5.4 Recovery Allow the specimen to remain under standard test conditions for 2 h, as defined in IEC 61300-1, unless otherwise specified in the relevant specification. Clean the specimen according to

43、 the manufacturers instructions. 61300-2-28 IEC:2013(E) 7 5.5 Final examinations and measurements On completion of the test, remove all fixtures and make final measurements, as defined by the relevant specification, to ensure that there is no permanent damage to the specimen. The results of the fina

44、l measurement shall be within the limit established in the relevant specification. Unless otherwise specified, visually examine the specimen in accordance with IEC 61300-3-1. Check for evidence of any degradation in the specimen. This may include, for example broken, loose or damaged parts or access

45、ories, breaking or damage to the cable jacket, seals, strain relief, or fibres, displaced, bent, or broken parts. 6 Severity The severity consists of the duration of exposure. The severity shall be specified in the relevant specification. The preferred severities for category E, shown in Table 1, ar

46、e non-mandatory severities which may be specified for this procedure. Sulphur dioxide shall be taken as the total oxides of sulphur expressed as SO 2 . Small concentrations of sulphur oxides other than SO 2(such as SO 3 ) are permitted to be present to a maximum concentration of 1 % of the total sul

47、phur oxides. The relative humidity shall be held as close as possible to 75 % but shall in no case exceed 80 % nor fall below 70 %. Table 1 Severities for category E Parameter Value Sulphur dioxide (25 5) 10 6(vol/vol) Temperature 25 C 2 C Relative humidity 75 % Duration 4 days 7 Details to be speci

48、fied The following details, as applicable, shall be specified in the relevent specification: test severities; specimen optically functioning or non-functioning; specimen mated or unmated; pre-conditioning procedure; test duration; recovery procedure, duration; initial examinations and measurements a

49、nd performance requirements; examinations and measurements during test and performance requirements; final examinations and measurements and performance requirements; deviations from test procedure; additional pass/fail criteria. _ INTERNATIONAL ELECTROTECHNICAL COMMISSION 3, rue de Varemb PO Box 131 CH-1211 Geneva 20 Switzerland Tel: + 41 22 919 02 11 Fax: + 41 22 919 03 00 infoiec.ch www.iec.ch