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
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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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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
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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
