1、 IEC 60068-2-60 Edition 3.0 2015-06 REDLINE VERSION Environmental testing Part 2-60: Tests Test Ke: Flowing mixed gas corrosion test IEC 60068-2-60:2015-06 RLV(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 IEC, Geneva, Switzerland All rights reserved. Unless otherwise spec
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10、ore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csciec.ch. IEC 60068-2-60 Edition 3.0 2015-06 REDLINE VERSION Environmental testing Part 2-60: Tests Test Ke: Flowing mixed gas corrosion test INTERNATIONAL
11、 ELECTROTECHNICAL COMMISSION ICS 19.040 ISBN 978-2-8322-2763-3 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. colour inside 2 IEC 60068-2-60:2015 RLV IEC 2015 CONTENTS FOREWORD . 3 1 General
12、. 1 Scope 5 2 Normative references 5 3 Test apparatus 5 4 Severities 6 5 Preconditioning 7 6 Initial measurements . 7 7 Testing 7 7.1 General . 7 7.2 Test specimens . 7 7.3 Corrosivity monitoring materials 7 7.4 Testing procedure . 8 8 Recovery . 9 9 Final measurements 10 10 Information to be given
13、in the relevant specification . 10 11 Information to be given in the test report 10 Annex A (normative) Corrosion monitoring copper coupons . 11 A.1 General . 11 A.2 Nature and dimension . 11 A.3 Cleaning procedure . 11 Annex B (informative) Description of test apparatus . 12 B.1 General . 12 B.2 Cl
14、imatic system . 15 B.3 Test enclosure 15 B.4 Gas delivery system 16 B.5 Analysing system 17 B.5.1 Temperature and humidity . 17 B.5.2 Gases 17 B.6 Other corrosion monitoring methods . 18 B.6.1 Weight Mass increase 18 B.6.2 Surface analysis of monitoring coupons . 18 B.6.3 Visual examination 18 B.7 C
15、alibration of the chamber 18 Annex C (informative) Guide to the selection of methods and test duration 19 C.1 Introduction Introductory remarks 19 C.2 Function of corrosive gases used in the tests 19 C.3 Use of the different test methods 19 Bibliography 21 Figure B.1 Example of test apparatus 13 Tab
16、le 1 Test conditions 6 IEC 60068-2-60:2015 RLV IEC 2015 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ENVIRONMENTAL TESTING Part 2-60: Tests Test Ke: Flowing mixed gas corrosion test FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization compr
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26、rmative 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 possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held res
27、ponsible for identifying any or all such patent rights. DISCLAIMER This Redline version is not an official IEC Standard and is intended only to provide the user with an indication of what changes have been made to the previous version. Only the current version of the standard is to be considered the
28、 official document. This Redline version provides you with a quick and easy way to compare all the changes between this standard and its previous edition. A vertical bar appears in the margin wherever a change has been made. Additions and deletions are displayed in red, with deletions being struck t
29、hrough. 4 IEC 60068-2-60:2015 RLV IEC 2015 International Standard IEC 60068-2-60 has been prepared by IEC technical committee 104: Environmental conditions, classification and methods of test. This third edition cancels and replaces the second edition, published in 1995, and constitutes a technical
30、revision. This edition includes the following significant technical changes with respect to the previous edition: updated IEC format; updated normative references list; addition of information of the working volume; revision of the test procedure; revision of the figures in Annex B. The text of this
31、 standard is based on the following documents: FDIS Report on voting 104/655/FDIS 104/656/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directive
32、s, Part 2. A list of all parts in the IEC 60068 series, published under the general title Environmental testing, 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:/
33、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. IMPORTANT The “colour inside” logo on the cover page of this publication indicates that it contains colours which are considered
34、to be useful for the correct understanding of its contents. Users should therefore print this publication using a colour printer. IEC 60068-2-60:2015 RLV IEC 2015 5 ENVIRONMENTAL TESTING Part 2-60: Tests Test Ke: Flowing mixed gas corrosion test 1 General Scope This part of IEC 60068-2 determines th
35、e corrosive influence of operating and storage indoor environments on electrotechnical products components, equipment and materials, particularly contacts and connections, considered separately, integrated into a subassembly or assembled as a complete equipment. It provides test methods giving infor
36、mation, on a comparative basis, to aid the selection of materials, choice of production processes and component design, with regard to corrosion resistance. A guide to the selection of methods and test duration is provided in Annex C. 2 Normative references The following documents, in whole or in pa
37、rt, 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 referenced document (including any amendments) applies. 60512-2: 1985, Electromechanical components for e
38、lectronic equipment; basic testing procedures and measuring methods Part 2: General examination, Electrical continuity and contact resistance tests, Insulation tests and voltage stress tests IEC 60512-2-1, Connectors for electronic equipment Tests and measurements Part 2-1: Electrical continuity and
39、 contact resistance tests Test 2a: Contact resistance Millivolt level resistance method IEC 60512-3-1, Connectors for electronic equipment Tests and measurements Part 3-1: Insulation tests Test 3a: Insulation resistance ISO 431:1981, Copper refinery shapes 3 Test apparatus The test apparatus consist
40、s of a climatic system, test enclosure, gas delivery system and means for measuring gas concentration. Details of design and construction are optional but shall be such that the conditions specified for each method are fulfilled throughout the working volume and shall comply with the following requi
41、rements: water droplets or aerosols shall not be injected into the test enclosure; air and water used shall be sufficiently clean in order not to affect performance of the test; the test atmosphere shall flow through the enclosure in such a manner as to ensure uniform test conditions within the work
42、ing volume; the sampling point for gas analysis shall be in the working volume of the test enclosure; the exhaust gases shall be treated in accordance with the relevant regulatory stipulations; 6 IEC 60068-2-60:2015 RLV IEC 2015 the wet bulb pod shall be placed in the test chamber in such a manner n
43、ot to exceed 0,1 % of the cross-section of the test chamber. Because of the strong synergistic effect and the so called “memory effect” (i.e., it is difficult to fully remove the chlorine compounds from the chamber, tubes, etc.), it is recommended that enclosures and tubing used for tests that incor
44、porate chlorine only be used for chlorine tests. The working volume is the volume within which the individual corrosion (weight mass increase of copper coupons expressed in mg/( dm 2 day) according to Annex A) at each location differs by a maximum of 15 % from the average corrosion of all coupons wi
45、thin the working volume. 4 Severities The test severity shall be given in the relevant specification. It is defined by the test method, chosen from Table 1, the test duration. Preferred durations, in days, are 4, 7, 10, 14 and 21. Four methods are defined. The different parameters for each method ar
46、e summarized in the following Table 1. A guidance for the use of each method is given in Clause C.3. Table 1 Test conditions Parameters Method 1 Method 2 Method 3 Method 4 H 2 S (10 9vol/vol)1)100 20 10 5 100 20 10 5 NO 2 (10 9vol/vol)2)200 50 200 50 200 20 Cl 2(10 9vol/vol)3)10 5 20 5 10 5 SO 2(10
47、9vol/vol) 4)500 100 200 20 Temperature (C) a25 1 30 1 30 1 25 1 RH (%) a75 3 70 3 75 3 75 3 Volume changes per hour Weight increase of copper coupons mg/(dm 2 day) according to annex A 3 10 1,0 2,0 3 10 0,3 1,0 3 10 1,2 2,2 3 10 1,2 2,4 Rate of ventilations per hour 3 to 10 3 to 10 3 to 10 3 to 10 M
48、ass increase of copper coupons mg/(dm 2 day) according to Annex A 1,0 to 2,0 0,3 to 1,3 1,2 to 2,2 1,2 to 2,4 1) H 2 S: 1 g/m 3 = 0,71mm 3/m 3 2) NO 2 : 1 g/m 3= 0,53 mm 3/m 3 (10 9vol/vol) = UNIT ( g/m 3 ) 3) Cl 2 : 1 g/m 3= 0,34 mm 3/m 34) SO 2 : 1 g/m 3= 0,38 mm 3/m 3NOTE Since the nature of the
49、corrosive attack is different for test Methods 1 to 4, neither their numbering nor the corresponding weight mass increase of copper coupons reflect their severity. aDifferent temperature and humidity values (e.g. 40 C and 80 %RH) may be used based upon mutual agreement between the interested parties. The mass increase may be different from the given values. IEC 60068-2-60:2015 RLV IEC 2015 7
