1、 IEC 60079-32-2 Edition 1.0 2015-02 INTERNATIONAL STANDARD NORME INTERNATIONALE Explosive atmospheres Part 32-2: Electrostatics hazards Tests Atmosphres explosives Partie 32-2: Dangers lectrostatiques Essais IEC 60079-32-2:2015-02(en-fr) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 IEC, Ge
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19、on ou si vous avez des questions contactez-nous: csciec.ch. IEC 60079-32-2 Edition 1.0 2015-02 INTERNATIONAL STANDARD NORME INTERNATIONALE Explosive atmospheres Part 32-2: Electrostatics hazards Tests Atmosphres explosives Partie 32-2: Dangers lectrostatiques Essais INTERNATIONAL ELECTROTECHNICAL CO
20、MMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 29.260.20 ISBN 978-2-8322-2276-8 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distri
21、butor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 IEC 60079-32-2:2015 IEC 2015 CONTENTS FOREWORD . 5 1 Scope 7 2 Normative references 7 3 Terms and definitions 8 4 Test methods . 10 4.1 General . 10 4.2 Surface resistance 11 4.2.1 General . 11
22、4.2.2 Principle 12 4.2.3 Apparatus 12 4.2.4 Test sample . 13 4.2.5 Procedure 13 4.2.6 Acceptance criteria 14 4.2.7 Test report . 14 4.3 Surface resistivity . 14 4.4 Volume resistivity 14 4.5 Leakage resistance . 15 4.5.1 General . 15 4.5.2 Principle 15 4.5.3 Apparatus 15 4.5.4 Test sample . 15 4.5.5
23、 Procedure 16 4.5.6 Acceptance criteria 16 4.5.7 Test report . 16 4.6 In-use testing of footwear 16 4.6.1 General . 16 4.6.2 Principle 16 4.6.3 Apparatus 17 4.6.4 Procedure 17 4.6.5 Acceptance criteria 17 4.6.6 Test report . 17 4.7 In-use testing of gloves . 17 4.7.1 General . 17 4.7.2 Principle 18
24、4.7.3 Apparatus 18 4.7.4 Procedure 18 4.7.5 Acceptance criteria 18 4.7.6 Test report . 18 4.8 Powder resistivity 18 4.8.1 General . 18 4.8.2 Principle 19 4.8.3 Apparatus 19 4.8.4 Procedure 20 4.8.5 Acceptance criteria 20 4.8.6 Test report . 20 4.9 Liquid conductivity 21 IEC 60079-32-2:2015 IEC 2015
25、3 4.9.1 General . 21 4.9.2 Principle 21 4.9.3 Apparatus 21 4.9.4 Procedure 22 4.9.5 Acceptance criteria 23 4.9.6 Test report . 23 4.10 Capacitance 23 4.10.1 General . 23 4.10.2 Principle 24 4.10.3 Apparatus 24 4.10.4 Test sample . 24 4.10.5 Procedure for moveable items . 24 4.10.6 Procedure for inst
26、alled items . 25 4.10.7 Acceptance criteria 25 4.10.8 Test report . 25 4.11 Transferred charge . 25 4.11.1 General . 25 4.11.2 Principle 26 4.11.3 Apparatus 26 4.11.4 Test sample . 27 4.11.5 Procedure 27 4.11.6 Acceptance criteria 28 4.11.7 Test report . 28 4.12 Ignition test . 29 4.12.1 General . 2
27、9 4.12.2 Apparatus 29 4.12.3 Procedure 32 4.12.4 Acceptance criteria 32 4.12.5 Test report . 32 4.13 Measuring of charge decay . 33 4.13.1 General . 33 4.13.2 Principle 33 4.13.3 Apparatus 33 4.13.4 Test sample . 34 4.13.5 Procedure 34 4.13.6 Acceptance criteria 35 4.13.7 Test report . 35 4.14 Break
28、down voltage . 35 4.14.1 General . 35 4.14.2 Principle 35 4.14.3 Apparatus 35 4.14.4 Test procedure 36 4.14.5 Acceptance criteria 37 4.14.6 Test report . 37 Bibliography 38 Figure 1 Test sample with applied electrodes (dimensions in mm) . 12 Figure 2 Measuring cell for powder resistivity . 19 4 IEC
29、60079-32-2:2015 IEC 2015 Figure 3 Measuring cell for liquid conductivity 22 Figure 4 Ignition probe . 31 Figure 5 Perforated plate of ignition probe . 32 Figure 6 Example of an arrangement for measurement of charge decay 34 Figure 7 Electrodes for measuring breakdown voltage of sheets 36 Table 1 Vol
30、ume concentrations of flammable test gas mixtures 30 IEC 60079-32-2:2015 IEC 2015 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ EXPLOSIVE ATMOSPHERES Part 32-2: Electrostatics hazards Tests FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardizatio
31、n comprising all national electrotechnical committees (IEC National Committees). The object of IEC is 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 Internationa
32、l Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and 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 thi
33、s preparatory work. International, governmental and non- governmental organizations liaising with the 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
34、 organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as 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
35、 form of recommendations for international use and are accepted by IEC National Committees in that sense. 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 misinterp
36、retation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake 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 o
37、r regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation 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 carrie
38、d out by independent certification bodies. 6) All users should ensure that they have the latest edition 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 Commi
39、ttees for any personal injury, property damage or other damage of any nature whatsoever, whether direct 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
40、 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 possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be h
41、eld responsible for identifying any or all such patent rights. International Standard IEC 60079-32-2 has been prepared by IEC technical committee 31: Equipment for explosive atmospheres. The text of this standard is based on the following documents: FDIS Report on voting 31/1164/FDIS 31/1176/RVD Ful
42、l 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 Directives, Part 2. A list of all parts of the IEC 60079 series, under the general title Explosive atmosph
43、eres, can be found on the IEC website. 6 IEC 60079-32-2:2015 IEC 2015 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 da
44、te, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. IEC 60079-32-2:2015 IEC 2015 7 EXPLOSIVE ATMOSPHERES Part 32-2: Electrostatics hazards Tests 1 Scope This part of IEC 60079 describes test methods concerning the equipment, product and process properties n
45、ecessary to avoid ignition and electrostatic shock hazards arising from static electricity. It is intended for use in a risk assessment of electrostatic hazards or for the preparation of product family or dedicated product standards for electrical or non-electrical machines or equipment. The purpose
46、 of this part of IEC 60079 is to provide standard test methods used for the control of static electricity, such as surface resistance, earth leakage resistance, powder resistivity, liquid conductivity, capacitance and evaluation of the incendivity of provoked discharges. It is especially intended fo
47、r use with existing standards of the IEC 60079 series. NOTE IEC TS 60079-32-1, Explosive atmospheres Part 32-1: Electrostatic hazards, guidance, was published in 2013. This international standard is not intended to supersede standards that cover specific products and industrial situations. This part
48、 of IEC 60079 presents the latest state of knowledge which may, however, slightly differ from requirements in other standards, especially concerning test climates. When a requirement of this standard conflicts with a requirement specified in IEC 60079-0, to avoid the possibility of re-testing previo
49、usly approved equipment, the requirement in IEC 60079-0 applies only for equipment within the scope of IEC 60079-0. In all other cases, the statements in this part of IEC 60079 apply. 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 re
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