SIST EN 60079-32-2:2015
(Main)Explosive atmospheres - Part 32-2: Electrostatics hazards - Tests (IEC 60079-32-2:2015)
Explosive atmospheres - Part 32-2: Electrostatics hazards - Tests (IEC 60079-32-2:2015)
This part of IEC 60079 describes test methods concerning the equipment, product and
process properties necessary 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 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 for 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 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 previously 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.
Explosionsgefährdete Bereiche - Teil 32-2: Elektrostatische Gefährdungen - Prüfverfahren (IEC 60079-32-2:2015)
Atmosphères explosives - Partie 32-2: Dangers électrostatiques - Essais (IEC 60079-32-2:2015)
L'IEC 60079-32-2:2015 décrit les méthodes d'essai relatives aux matériels, au produit et aux propriétés de processus nécessaires pour éviter l'inflammation et les dangers de chocs électrostatiques liés à l'électricité statique. Elle est destinée à être utilisée dans le cadre d'une évaluation des risques de dangers électrostatiques ou de la préparation de normes de famille de produits ou de normes de produits spécifiques concernant des machines ou des matériels électriques ou non électriques. Le but de la présente partie de l'IEC 60079 est de fournir des méthodes d'essai normalisées utilisées pour le contrôle de l'électricité statique, telles que la résistance superficielle, la résistance de fuite à la terre, la résistivité de la poudre, la conductivité du liquide, la capacité et l'évaluation de l'inflammabilité des décharges provoquées. Le présent document est notamment destiné à être utilisé avec les normes existantes de la série IEC 60079. La présente partie de l'IEC 60079 décrit l'état des connaissances les plus récentes qui peuvent toutefois différer légèrement des exigences d'autres normes, notamment concernant les climats d'essai. Lorsqu'une exigence de la présente norme est en contradiction avec une exigence spécifiée dans l'IEC 60079-0, cette dernière s'applique uniquement aux matériels relevant du domaine d'application de l'IEC 60079-0 pour éviter toute possibilité de contre-essai des matériels précédemment approuvés. Dans tous les autres cas, les énoncés de la présente partie de l'IEC 60079 s'appliquent.
Mots clés: l'inflammation et les dangers de chocs électrostatiques, l'électricité statique
Eksplozivne atmosfere - 32-2. del: Elektrostatične nevarnosti - Preskusi (IEC 60079-32-2:2015)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 60079-32-2:2015
01-julij-2015
(NVSOR]LYQHDWPRVIHUHGHO (OHNWURVWDWLþQHQHYDUQRVWL3UHVNXVL ,(&
Explosive atmospheres - Part 32-2: Electrostatics hazards - Tests (IEC 60079-32-
2:2015)
Explosionsgefährdete Bereiche - Teil 32-2: Elektrostatische Gefährdungen -
Prüfverfahren (IEC 60079-32-2:2015)
Atmosphères explosives - Partie 32-2: Dangers électrostatiques - Essais (IEC 60079-32-
2:2015)
Ta slovenski standard je istoveten z: EN 60079-32-2:2015
ICS:
29.260.20 (OHNWULþQLDSDUDWL]D Electrical apparatus for
HNVSOR]LYQDR]UDþMD explosive atmospheres
SIST EN 60079-32-2:2015 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 60079-32-2:2015
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SIST EN 60079-32-2:2015
EUROPEAN STANDARD EN 60079-32-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2015
ICS 29.260.20
English Version
Explosive atmospheres - Part 32-2: Electrostatics hazards -
Tests
(IEC 60079-32-2:2015)
Atmosphères explosives - Partie 32-2: Dangers Explosionsgefährdete Bereiche - Teil 32-2: Elektrostatische
électrostatiques - Essais Gefährdungen - Prüfverfahren
(IEC 60079-32-2:2015) (IEC 60079-32-2:2015)
This European Standard was approved by CENELEC on 2015-04-01. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60079-32-2:2015 E
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SIST EN 60079-32-2:2015
EN 60079-32-2:2015 - 2 -
Foreword
The text of document 31/1164/FDIS, future edition 1 of IEC 60079-32-2, prepared by IEC/TC 31 "Equipment
for explosive atmospheres" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC
as EN 60079-32-2:2015.
The following dates are fixed:
• latest date by which the document has to be (dop) 2016-01-01
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2018-04-01
• latest date by which the national
standards conflicting with the
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 60079-32-2:2015 was approved by CENELEC as a European
Standard without any modification.
IEC 60079-1 NOTE Harmonized as EN 60079-1.
IEC 60079-7 NOTE Harmonized as EN 60079-7.
IEC 60079-10-1 NOTE Harmonized as EN 60079-10-1.
IEC 60079-10-2 NOTE Harmonized as EN 60079-10-2.
IEC 60167 NOTE Harmonized as HD 568 S1.
IEC 61340-4-1 NOTE Harmonized as EN 61340-4-1.
IEC 61340-4-3 NOTE Harmonized as EN 61340-4-3.
IEC 61340-4-5 NOTE Harmonized as EN 61340-4-5.
ISO 284 NOTE Harmonized as EN ISO 284.
ISO 8031 NOTE Harmonized as EN ISO 8031.
ISO 8330 NOTE Harmonized as EN ISO 8330.
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SIST EN 60079-32-2:2015
- 3 - EN 60079-32-2:2015
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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 referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60079-0 - Explosive atmospheres -- Part 0: Equipment - EN 60079-0 -
General requirements
- - +A11 -
IEC 60093 - Methods of test for volume resistivity and HD 429 S1 -
surface resistivity of solid electrical insulating
materials
IEC 60243-1 - Electric strength of insulating materials - Test EN 60243-1 -
methods -- Part 1: Tests at power frequencies
IEC 60243-2 - Electric strength of insulating materials - Test EN 60243-2 -
methods -- Part 2: Additional requirements for
tests using direct voltage
IEC 60247 - Insulating liquids - Measurement of relative EN 60247 -
permittivity, dielectric dissipation factor (tan d)
and d.c. resistivity
IEC 61340-2-1 - Electrostatics -- Part 2-1: Measurement EN 61340-2-1 -
methods - Ability of materials and products to
dissipate static electric charge
IEC 61340-2-3 - Electrostatics -- Part 2-3: Methods of test for EN 61340-2-3 -
determining the resistance and resistivity of
solid planar materials used to avoid
electrostatic charge accumulation
IEC 61340-4-4 - Electrostatics - Part 4-4: Standard test EN 61340-4-4 -
methods for specific applications -
Electrostatic classification of flexible
intermediate bulk containers (FIBC)
ISO 14309 - Rubber, vulcanized or thermoplastic - - -
Determination of volume and/or surface
resistivity
IEC/TS 60079-32-1 - Explosive atmospheres - Part 32-1: CLC/TR 60079-32-1 -
Electrostatic hazards, guidance
IEC/TS 61241-2-2 - Electrical apparatus for use in the presence of EN 61241-2-2 -
combustible dust -- Part 2: Test methods --
Section 2: Method for determining the
electrical resistivity of dust in layers
ASTM E582 - Standard test method for minimum ignition - -
energy and quenching distance in gaseous
mixtures
EN 1081 - Resilient floor coverings - Determination of - -
the electrical resistance
EN 1149-3 - Protective clothing - Electrostatic properties - - -
Part 3: Test methods for measurement of
charge decay
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SIST EN 60079-32-2:2015
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SIST EN 60079-32-2:2015
IEC 60079-32-2
®
Edition 1.0 2015-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Explosive atmospheres –
Part 32-2: Electrostatics hazards – Tests
Atmosphères explosives –
Partie 32-2: Dangers électrostatiques – Essais
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.260.20 ISBN 978-2-8322-2276-8
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN 60079-32-2:2015
– 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
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 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
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
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SIST EN 60079-32-2:2015
IEC 60079-32-2:2015 © IEC 2015 – 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 installed 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 . 29
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 Breakdown 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
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SIST EN 60079-32-2:2015
– 4 – IEC 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 – Volume concentrations of flammable test gas mixtures . 30
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SIST EN 60079-32-2:2015
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 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 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 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 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 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 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
misinterpretation 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 or 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 carried 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 Committees 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 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 held 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
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 Directives, Part 2.
A list of all parts of the IEC 60079 series, under the general title Explosive atmospheres, can
be found on the IEC website.
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SIST EN 60079-32-2:2015
– 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 date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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SIST EN 60079-32-2:2015
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 necessary 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 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 for 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 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 previously 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 references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60079-0, Explosive atmospheres – Part 0: Equipment – General requirements
IEC TS 60079-32-1, Explosive atmospheres – Part 32-1: Electrostatic hazards, guidance
IEC 60093, Methods of test for volume resistivity and surface resistivity of solid electrical
insulating materials
IEC 60243-1, Electric strength of insulating materials – Test methods – Part 1: Tests at power
frequencies
IEC 60243-2, Electric strength of insulating materials – Test methods – Part 2: Additional
requirements for tests using direct voltage
IEC 60247, Insulating liquids – Measurement of relative permittivity, dielectric dissipation
factor (tan d) and d.c. resistivity
IEC TS 61241-2-2, Electrical apparatus for use in the presence of combustible dust – Part 2:
Test methods – Section 2: Method for determining the electrical resistivity of dust in layers
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SIST EN 60079-32-2:2015
– 8 – IEC 60079-32-2:2015 © IEC 2015
IEC 61340-2-1, Electrostatics – Part 2-1: Measurement methods – Ability of materials and
products to dissipate static electric charge
IEC 61340-2-3, Electrostatics – Part 2-3: Methods of test for determining the resistance and
resistivity of solid planar materials used to avoid electrostatic charge accumulation
IEC 61340-4-4, Electrostatics – Part 4-4: Standard test methods for specific applications –
Electrostatic classification of flexible intermediate bulk containers (FIBC)
ISO 14309, Rubber, vulcanized or thermoplastic – Determination of volume and/or surface
resistivity
ASTM E582, Standard test method for minimum ignition energy and quenching distance in
gaseous mixtures
EN 1081, Resilient floor coverings – Determination of the electrical resistance
EN 1149-3, Protective clothing – Electrostatic properties Part 3: Test methods for
measurement of charge decay.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
conductive
having a resistivity or resistance below the dissipative range (see 3.4) allowing stray current
arcs and electric shocks to occur
Note 1 to entry: Conductive materials or objects are neither dissipative nor insulating and are incapable of
retaining a significant electrostatic charge when in contact with earth.
Note 2 to entry: Boundary limits are given in IEC TS 60079-32-1 for the conductive range for solid materials,
enclosures, some objects and bulk materials.
Note 3 to entry: Product standards and other standards covering electrostatic properties oft
...
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