EN IEC 60079-0:2018

Explosive atmospheres - Part 0: Equipment - General requirements

NEW!IEC 60079-0:2017 is available as IEC 60079-0:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60079-0:2017 specifies the general requirements for construction, testing and marking of Ex Equipment and Ex Components intended for use in explosive atmospheres. The standard atmospheric conditions (relating to the explosion characteristics of the atmosphere) under which it may be assumed that Ex Equipment can be operated are: -temperature –20 °C to +60 °C; -pressure 80 kPa (0,8 bar) to 110 kPa (1,1 bar); and -air with normal oxygen content, typically 21 % v/v. This part of IEC 60079 and other standards supplementing this standard specify additional test requirements for Ex Equipment operating outside the standard temperature range, but further additional consideration and additional testing may be required for Ex Equipment operating outside the standard atmospheric pressure range and standard oxygen content. Such additional testing may be particularly relevant with respect to Types of Protection that depend on quenching of a flame such as ‘flameproof enclosures “d”’ (IEC 60079-1) or limitation of energy, ‘intrinsic safety “i”’ (IEC 60079-11). This seventh edition cancels and replaces the sixth edition, published in 2011. This edition constitutes a technical revision. Refer to the Forward of the document for a complete listing of the technical changes between edition 7.0 and the previous edition of the document. Keywords: Ex Equipment and Ex Components intended for use in explosive atmospheres

Explosionsgefährdete Bereiche - Teil 0: Betriebsmittel - Allgemeine Anforderungen

Atmosphères explosives - Partie 0: Matériel - Exigences générales

NEW!IEC 60079-0:2017 est disponible sous forme de IEC 60079-0:2017 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.IEC 60079-0:2017 spécifie les exigences générales de construction, d'essais et de marquage de l’appareil Ex et des Composants Ex destinés à être utilisés dans des atmosphères explosives. Les conditions atmosphériques normales (relatives aux caractéristiques d’explosion de l’atmosphère) dans lesquelles, par hypothèse l’appareil Ex peut être utilisé, sont les suivantes: -température de –20 °C à +60 °C; -pression de 80 kPa (0,8 bar) à 110 kPa (1,1 bar); et -air avec teneur normale en oxygène, typiquement 21 % v/v. La présente partie de la norme IEC 60079 et les autres normes qui la complètent spécifient des exigences d’essai supplémentaires pour les appareils Ex fonctionnant hors de la plage normale de températures, une attention supplémentaire ultérieure et des essais complémentaires pouvant toutefois être exigés pour les appareils Ex fonctionnant hors de la plage normale de pressions atmosphériques et de la teneur normale en oxygène. De tels essais complémentaires peuvent se révéler pertinents, notamment pour les modes de protection qui dépendent de l’extinction d’une flamme, tels qu’une «enveloppe antidéflagrante «d»» (IEC 60079-1), ou de la limitation de l’énergie, tels que la «sécurité intrinsèque «i»» (IEC 60079-11). Reportez-vous à l'avant-propos du document pour une liste complète des modifications techniques entre l'édition 7.0 et édition précédente du document. Mots-clés: l’appareil Ex et des Composants Ex destinés à être utilisés dans des atmosphères explosives.

Eksplozivne atmosfere - 0. del: Oprema - Splošne zahteve

Ta del standarda IEC 60079 določa splošne zahteve za konstrukcijo, preskušanje ter označevanje opreme in komponent Ex, ki so namenjene uporabi v eksplozivnih atmosferah. Standardni atmosferski pogoji (povezani z eksplozijskimi značilnostmi atmosfere), na podlagi katerih se lahko sklepa, da je opremo Ex mogoče uporabljati, so:
• temperatura od –20 °C do 60 °C;
• tlak od 80 kPa (0,8 bara) do 110 kPa (1,1 bara); in
• zrak z normalno vsebnostjo kisika, običajno z 21-odstotnim masnim deležem.
Ta del standarda IEC 60079 in drugi standardi, ki dopolnjujejo ta standard, določajo dodatne preskusne zahteve za opremo Ex, ki deluje zunaj običajnega temperaturnega razpona, vendar sta za opremo Ex, ki deluje zunaj običajnega razpona atmosferskega tlaka in običajne vsebnosti kisika, morda potrebna dodatna obravnava in preskušanje.
Takšno dodatno preskušanje je lahko pomembno zlasti v povezavi z vrstami zaščite, ki so odvisne od gašenja plamena, npr. »ognjevarno ohišje ’d’« (IEC 60079-1), ali omejitve energije, npr. »lastnovarne električne naprave ’i’« (IEC 60079-11).
OPOMBA 1: Čeprav je za zgornje običajne atmosferske pogoje podan temperaturni razpon atmosfere od –20 °C do 60 °C, je običajen razpon sobne temperature opreme Ex od –20 °C do 40 °C, razen če ni določeno ali označeno drugače. Glej točko 5.1.1. Upošteva se, da je razpon od –20 °C do 40 °C primeren za številne elemente opreme Ex in da bi pri proizvodnji opreme Ex, ki bi ustrezala običajni atmosferi, zgornja mejna vrednost sobne temperature 60 °C povzročila nepotrebne oblikovne omejitve.
OPOMBA 2: Zahteve, podane v tem standardu, izhajajo iz ocene nevarnosti vžiga, ki je bila izvedena za opremo. Upoštevani viri vžiga, npr. vroče površine, elektromagnetno sevanje, mehansko povzročene iskre, mehanski udarci, ki povzročijo reakcijo termita, električni oblok in elektrostatični naboj v običajnih industrijskih okoljih, so povezani s to vrsto opreme.
OPOMBA 3: Če sta hkrati (lahko) prisotni atmosfera eksplozivnega plina in atmosfera gorljivega prahu, je običajno treba sprejeti dodatne zaščitne ukrepe. Dodatna navodila o uporabi opreme Ex v hibridnih mešanicah (mešanica vnetljivega plina ali hlapa in gorljivega prahu ali odpadkov iz predilnic) so podana v standardu IEC 60079-14.
Standard IEC 60079 ne določa zahtev za varnost, razen tistih, ki so neposredno povezane
z nevarnostjo eksplozije.
Viri vžiga, kot so adiabatska kompresija, tlačni skoki, eksotermna kemična reakcija, samovžig prahu,
odprti plamen in vroči plini/tekočine, niso obravnavani v tem standardu.
OPOMBA 4: Čeprav takšna oprema ne spada na področje uporabe tega standarda, se zanjo običajno izvede analiza nevarnosti, na podlagi katere se določi in navede vse morebitne vire vžiga opreme ter ukrepe, s katerimi je mogoče preprečiti vžig. Glej standard ISO/IEC 80079-36.

General Information

• Status: Published
• Publication Date: 05-Jul-2018
• Withdrawal Date: 05-Jul-2021
• ICS: 29.260.20 - Electrical apparatus for explosive atmospheres
• Technical Committee: CLC/TC 31 - Electrical apparatus for explosive atmospheres - General requirements
• Drafting Committee: IEC/TC 31 - Electrical apparatus for potentially explosive atmospheres
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 06-Jul-2018
• Completion Date: 06-Jul-2018
• Directive: 2008/68/EC - Directve 2008/68/EC of the European Parliament and of the council of 24 September 2008 on the inland transport of the dangerous goods
• Directive: 2014/34/EU - Directive 2014/34/EU Of The European Parliament And Of The Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to equipment and protective systems intended for use in potentially explosive atmospheres (recast)
• Mandate: M/BC/CEN/92/46 - Standardization mandate assigned to CEN/CENELEC concerning equipment and protective systems intended for use in potentially explosive atmospheres
• Ref Project: SIST EN IEC 60079-0:2018 - Explosive atmospheres - Part 0: Equipment - General requirements

Relations

• Replaces: EN 60079-0:2012/A11:2013 - Explosive atmospheres - Part 0: Equipment - General requirements
• Effective Date: 10-Jul-2018
• Replaces: EN 60079-0:2012 - Explosive atmospheres - Part 0: Equipment - General requirements
• Effective Date: 02-Aug-2016
• Amended By: EN IEC 60079-0:2018/A11:2024 - Explosive atmospheres - Part 0: Equipment - General requirements
• Effective Date: 01-Mar-2022
• Corrected By: EN IEC 60079-0:2018/AC:2020-02 - Explosive atmospheres - Part 0: Equipment - General requirements
• Effective Date: 03-Mar-2020

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60079-0:2018
01-oktober-2018
1DGRPHãþD
SIST EN 60079-0:2012/A11:2014
Eksplozivne atmosfere - 0. del: Oprema - Splošne zahteve
Explosive atmospheres - Part 0: Equipment - General requirements
Explosionsgefährdete Bereiche - Teil 0: Betriebsmittel - Allgemeine Anforderungen
Atmosphères explosives - Partie 0: Matériel - Exigences générales
Ta slovenski standard je istoveten z: EN IEC 60079-0:2018
ICS:
29.260.20 (OHNWULþQLDSDUDWL]D Electrical apparatus for
HNVSOR]LYQDR]UDþMD explosive atmospheres
SIST EN 60079-0:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

SIST EN 60079-0:2018
SIST EN 60079-0:2018
EUROPEAN STANDARD EN IEC 60079-0

NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2018
ICS 29.260.20 Supersedes EN 60079-0:2012
English Version
Explosive atmospheres - Part 0: Equipment - General
requirements
(IEC 60079-0:2017)
Atmosphères explosives - Partie 0: Matériel - Exigences Explosionsgefährdete Bereiche - Teil 0: Betriebsmittel -
générales Allgemeine Anforderungen
(IEC 60079-0:2017) (IEC 60079-0:2017)
This European Standard was approved by CENELEC on 2017-12-04. 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, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60079-0:2018 E

SIST EN 60079-0:2018
European foreword
The text of document (31/1345/FDIS), future edition 7 of IEC 60079-0, prepared by IEC/TC 31
"Equipment for explosive atmospheres" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 60079-0:2018.

The following dates are fixed:
(dop) 2019-01-06
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2021-07-06
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60079-0:2012.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).

For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this
document.
Endorsement notice
The text of the International Standard IEC 60079-0:2017 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC/TS 60034-25 NOTE Harmonized as CLC/TS 60034-25.
IEC 60034-29 NOTE Harmonized as EN 60034-29.
IEC 60079-2 NOTE Harmonized as EN 60079-2.
IEC 60079-5 NOTE Harmonized as EN 60079-5.
IEC 60079-6 NOTE Harmonized as EN 60079-6.
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 60079-11 NOTE Harmonized as EN 60079-11.
IEC 60079-13 NOTE Harmonized as EN 60079-13.
IEC 60079-14 NOTE Harmonized as EN 60079-14.
IEC 60079-15 NOTE Harmonized as EN 60079-15.
IEC 60079-17 NOTE Harmonized as EN 60079-17.
IEC 60079-18 NOTE Harmonized as EN 60079-18.
IEC 60079-19 NOTE Harmonized as EN 60079-19.
IEC 60079-25 NOTE Harmonized as EN 60079-25.
IEC 60079-28 NOTE Harmonized as EN 60079-28.
IEC 60079-29-1 NOTE Harmonized as EN 60079-29-1.
SIST EN 60079-0:2018
IEC 60079-29-4 NOTE Harmonized as EN 60079-29-4.
IEC/IEEE 60079-30-1 NOTE Harmonized as EN 60079-30-1.
IEC 60079-31 NOTE Harmonized as EN 60079-31.
IEC/TS 60079-32-1 NOTE Harmonized as CLC/TR 60079-32-1.
IEC/TS 60079-39 NOTE Harmonized as CLC/TS 60079-39 ).
IEC 60254 (series) NOTE Harmonized in EN 60254 series.
IEC 60623 NOTE Harmonized as EN 60623.
IEC 60896-11 NOTE Harmonized as EN 60896-11.
IEC 60896-21 NOTE Harmonized as EN 60896-21.
IEC 60952 (series) NOTE Harmonized in EN 60952 series.
IEC 61056-1 NOTE Harmonized in EN 61056-1.
IEC 61427 (series) NOTE Harmonized in EN 61427 series.
IEC 61951-1 NOTE Harmonized as EN 61951-1.
IEC 61951-2 NOTE Harmonized as EN 61951-2.
IEC 61960 (series) NOTE Harmonized in EN 61960 series.
ISO/IEC 80079-20-2 NOTE Harmonized as EN ISO/IEC 80079-20-2.
ISO/IEC 80079-34 NOTE Harmonized as EN ISO/IEC 80079-34.
ISO/IEC 80079-36 NOTE Harmonized as EN ISO/IEC 80079-36.
ISO/IEC 17000 NOTE Harmonized as EN ISO/IEC 17000.

)Under preparation. Stage at the time of publication: CLC/FprTS 60079-39:2017.
SIST EN 60079-0:2018
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where 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 60034-1 -  Rotating electrical machines - Part 1: Rating and EN 60034-1 ) -
performance
IEC 60034-5 -  Rotating electrical machines - Part 5: Degrees of EN 60034-5 2001
protection provided by the integral design of
rotating electrical machines (IP code) -
Classification
IEC 60079-1 -  Explosive atmospheres - Part 1: Equipment EN 60079-1 2014
protection by flameproof enclosures "d"
IEC 60079-20-1 -  Explosive atmospheres - Part 20-1: Material EN 60079-20-1 2010
characteristics for gas and vapour classification -
Test methods and data
IEC 60079-26 -  Explosive atmospheres - Part 26: Equipment with EN 60079-26 2015
equipment protection level (EPL) Ga
IEC 60079-35-1 -  Explosive atmospheres - Part 35-1: Caplights for EN 60079-35-1 2011
use in mines susceptible to firedamp - General
requirements - Construction and testing in
relation to the risk of explosion
+AC 2011
IEC 60086-1 -  Primary batteries - Part 1: General EN 60086-1 2015
IEC 60192 -  Low pressure sodium vapour lamps - EN 60192 2001
Performance specifications
IEC 60216-1 -  Electrical insulating materials - Thermal EN 60216-1 2013
endurance properties - Part 1: Ageing
procedures and evaluation of test results
IEC 60216-2 -  Electrical insulating materials - Thermal EN 60216-2 2005
endurance properties - Part 2: Determination of
thermal endurance properties of electrical
insulating materials - Choice of test criteria
IEC 60243-1 -  Electric strength of insulating materials - Test EN 60243-1 2013
methods - Part 1: Tests at power frequencies
IEC 60423 -  Conduit systems for cable management - EN 60423 2007
Outside diameters of conduits for electrical
installations and threads for conduits and fittings
IEC 60529 -  Degrees of protection provided by enclosures (IP EN 60529 1991
Code)
+EN 1993
60529:1991/corrig
endum May 1993
)Under preparation. Stage at the time of publication: FprEN 60034-1:2017.
SIST EN 60079-0:2018
IEC 60662 (mod) -  High pressure sodium vapour lamps - EN 60662 2012
Performance specifications
+prAA 2017
IEC 60664-1 -  Insulation coordination for equipment within low- EN 60664-1 2007
voltage systems - Part 1: Principles,
requirements and tests
IEC 60947-1 -  Low-voltage switchgear and controlgear - Part 1: EN 60947-1 2007
General rules
IEC 62626-1 -  Low-voltage switchgear and controlgear EN 62626-1 2014
enclosed equipment - Part 1: Enclosed switch
outside the scope of IEC 60947-3 for various
applications, to provide isolation of electrical
equipment during repair and maintenance work
ISO 48 -  Rubber, vulcanized or thermoplastic_- - -
Determination of hardness (hardness between 10
IRHD and 100 IRHD)
ISO 178 -  Plastics - Determination of flexural properties EN ISO 178 2010
ISO 179 series Plastics - Determination of Charpy impact EN ISO 179 series
properties
ISO 262 -  ISO general purpose metric screw threads- - -
Selected sizes for screws, bolts and nuts
ISO 273 -  Fasteners - Clearance holes for bolts and screws EN 20273 1991
ISO 527-2 -  Plastics - Determination of tensile properties - EN ISO 527-2 2012
Part 2: Test conditions for moulding and
extrusion plastics
ISO 965-1 -  ISO general purpose metric screw threads - - -
Tolerances – Part 1: Principles and basic data
ISO 965-3 -  ISO general purpose metric screw threads- - -
Tolerances – Part 3: Deviations for constructional
screw threads
ISO 3601-1 -  Fluid power systems - O-rings – Part 1: Inside - -
diameters, cross-sections, tolerances and
designation codes
ISO 3601-2 -  Fluid power systems - O-rings - Part 2: Housing - -
dimensions for general applications
ISO 4014 -  Hexagon head bolts - Product grades A and B EN ISO 4014 2011
ISO 4017 -  Fasteners - Hexagon head screws - Product EN ISO 4017 2014
grades A and B
ISO 4026 -  Hexagon socket set screws with flat point EN ISO 4026 2003
ISO 4027 -  Hexagon socket set screws with cone point EN ISO 4027 2003
ISO 4028 -  Hexagon socket set screws with dog point EN ISO 4028 2003
ISO 4029 -  Hexagon socket set screws with cup point EN ISO 4029 2003
ISO 4032 -  Hexagon regular nuts (style 1) - Product grades EN ISO 4032 2012
A and B
ISO 4762 -  Hexagon socket head cap screws EN ISO 4762 2004
ISO 4892-2 -  Plastics - Methods of exposure to laboratory light EN ISO 4892-2 2013
sources - Part 2: Xenon-arc lamps
ISO 7380 -  Hexagon socket button head screws EN ISO 7380 2011
ISO 14583 -  Hexalobular socket pan head screws EN ISO 14583 2011
ANSI/UL 746B -  Polymeric Materials - Long-Term Property - -
Evaluations
ANSI/UL 746C -  Standard for Polymeric Materials - Use in - -
Electrical Equipment Evaluations
ASTM D 5964 -  Standard Practice for Rubber IRM 901, IRM 902, - -
and IRM 903 Replacement Oils for ASTM No. 1,
ASTM No. 2, ASTM No. 3 Oils, and IRM 905
formerly ASTM No. 5 Oil
SIST EN 60079-0:2018
Annex ZY
(informative)
Additional Information relating to the European ATEX Directive 2014/34/EU
ZY.1 Equipment Groups and Categories
In all cases Equipment Protection Levels (EPL) as defined by EN IEC 60079-0 are related to
the corresponding Equipment Groups and Equipment Categories according to table ZY.1. The
same applies if a standard makes reference to the intended use of equipment in Zones
according to the definitions in EN 60079-10-1 and EN 60079-10-2.
Table ZY.1
EN IEC 60079-0 Directive 2014/34/EU EN 60079-10-X
Equipment
EPL Group Equipment Group Zones
Category
Ma M1 Not Applicable
I I
Mb M2
Ga 1G 0
Gb II 2G 1
Gc 3G 2
II
Da 1D 20
Db III 2D 21
Dc 3D 22
ZY.2 Instructions
The manufacturer or his authorized representative in the Community is to draw up the instructions for
use in the required Community languages.

In clause 30.1 under: “instructions for safety addressing the following areas – installation and
erection;”
“Information other than the general requirements given in IEC 60079-14”
Is replaced by
“Information other than the general requirements given in EN 60079-14 and EN 50628”

NOTE EN 50628 - Erection of electrical installations in underground mines

ZY.3 Marking
ZY.3.1
The marking according to this standard is to be supplemented by the marking according to
Directive 2014/34/EU. Examples are given below.
European marking examples
Directive part Standard part Equipment example
I M2 Ex db I Mb Mining equipment,
SIST EN 60079-0:2018
Type of Protection flameproof enclosure “d”

II 2G Ex eb IIB T4 Gb Gas explosion protected equipment
Type of Protection increased safety “e”

II 1D Ex ma IIIC 120°C Da Dust explosion protected equipment,
Type of Protection encapsulation “m”
NOTE 1 Attention is drawn to the requirement in 29.3 f):
“The Ex marking for explosive gas atmospheres and explosive dust atmospheres shall be separate and
not combined;”
II 1 G   Ex ia IIB T4 Ga
II 1 D   Ex ia IIIC T120°C Da
Alternatively, the directive part of the marking may be combined and the standard part of the marking
kept separate, as follows:
II 1 GD Ex ia IIB T4 Ga
Ex ia IIIC T120°C Da
NOTE 2 For Ex Equipment intended to be put on the market in the EEA, CE marking is applicable.
For Ex Components intended to be put on the market in the EEA, CE marking is not applicable.

ZY.3.2
Contrary to 29.3 a) the marking is to always include the manufacturer’s name (not trademark)
and address. The address is to be sufficient to identify
...

SLOVENSKI STANDARD
01-oktober-2018
Nadomešča:
SIST EN 60079-0:2012/A11:2014
Eksplozivne atmosfere - 0. del: Oprema - Splošne zahteve
Explosive atmospheres - Part 0: Equipment - General requirements
Explosionsgefährdete Bereiche - Teil 0: Betriebsmittel - Allgemeine Anforderungen
Atmosphères explosives - Partie 0: Matériel - Exigences générales
Ta slovenski standard je istoveten z: EN IEC 60079-0:2018
ICS:
29.260.20 Električni aparati za Electrical apparatus for
eksplozivna ozračja explosive atmospheres
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60079-0

NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2018
ICS 29.260.20 Supersedes EN 60079-0:2012
English Version
Explosive atmospheres - Part 0: Equipment - General
requirements
(IEC 60079-0:2017)
Atmosphères explosives - Partie 0: Matériel - Exigences Explosionsgefährdete Bereiche - Teil 0: Betriebsmittel -
générales Allgemeine Anforderungen
(IEC 60079-0:2017) (IEC 60079-0:2017)
This European Standard was approved by CENELEC on 2017-12-04. 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, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60079-0:2018 E

European foreword
The text of document (31/1345/FDIS), future edition 7 of IEC 60079-0, prepared by IEC/TC 31
"Equipment for explosive atmospheres" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 60079-0:2018.

The following dates are fixed:
(dop) 2019-01-06
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2021-07-06
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60079-0:2012.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).

For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this
document.
Endorsement notice
The text of the International Standard IEC 60079-0:2017 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC/TS 60034-25 NOTE Harmonized as CLC/TS 60034-25.
IEC 60034-29 NOTE Harmonized as EN 60034-29.
IEC 60079-2 NOTE Harmonized as EN 60079-2.
IEC 60079-5 NOTE Harmonized as EN 60079-5.
IEC 60079-6 NOTE Harmonized as EN 60079-6.
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 60079-11 NOTE Harmonized as EN 60079-11.
IEC 60079-13 NOTE Harmonized as EN 60079-13.
IEC 60079-14 NOTE Harmonized as EN 60079-14.
IEC 60079-15 NOTE Harmonized as EN 60079-15.
IEC 60079-17 NOTE Harmonized as EN 60079-17.
IEC 60079-18 NOTE Harmonized as EN 60079-18.
IEC 60079-19 NOTE Harmonized as EN 60079-19.
IEC 60079-25 NOTE Harmonized as EN 60079-25.
IEC 60079-28 NOTE Harmonized as EN 60079-28.
IEC 60079-29-1 NOTE Harmonized as EN 60079-29-1.
IEC 60079-29-4 NOTE Harmonized as EN 60079-29-4.
IEC/IEEE 60079-30-1 NOTE Harmonized as EN 60079-30-1.
IEC 60079-31 NOTE Harmonized as EN 60079-31.
IEC/TS 60079-32-1 NOTE Harmonized as CLC/TR 60079-32-1.
IEC/TS 60079-39 NOTE Harmonized as CLC/TS 60079-39 ).
IEC 60254 (series) NOTE Harmonized in EN 60254 series.
IEC 60623 NOTE Harmonized as EN 60623.
IEC 60896-11 NOTE Harmonized as EN 60896-11.
IEC 60896-21 NOTE Harmonized as EN 60896-21.
IEC 60952 (series) NOTE Harmonized in EN 60952 series.
IEC 61056-1 NOTE Harmonized in EN 61056-1.
IEC 61427 (series) NOTE Harmonized in EN 61427 series.
IEC 61951-1 NOTE Harmonized as EN 61951-1.
IEC 61951-2 NOTE Harmonized as EN 61951-2.
IEC 61960 (series) NOTE Harmonized in EN 61960 series.
ISO/IEC 80079-20-2 NOTE Harmonized as EN ISO/IEC 80079-20-2.
ISO/IEC 80079-34 NOTE Harmonized as EN ISO/IEC 80079-34.
ISO/IEC 80079-36 NOTE Harmonized as EN ISO/IEC 80079-36.
ISO/IEC 17000 NOTE Harmonized as EN ISO/IEC 17000.

)Under preparation. Stage at the time of publication: CLC/FprTS 60079-39:2017.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where 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 60034-1 -  Rotating electrical machines - Part 1: Rating and EN 60034-1 ) -
performance
IEC 60034-5 -  Rotating electrical machines - Part 5: Degrees of EN 60034-5 2001
protection provided by the integral design of
rotating electrical machines (IP code) -
Classification
IEC 60079-1 -  Explosive atmospheres - Part 1: Equipment EN 60079-1 2014
protection by flameproof enclosures "d"
IEC 60079-20-1 -  Explosive atmospheres - Part 20-1: Material EN 60079-20-1 2010
characteristics for gas and vapour classification -
Test methods and data
IEC 60079-26 -  Explosive atmospheres - Part 26: Equipment with EN 60079-26 2015
equipment protection level (EPL) Ga
IEC 60079-35-1 -  Explosive atmospheres - Part 35-1: Caplights for EN 60079-35-1 2011
use in mines susceptible to firedamp - General
requirements - Construction and testing in
relation to the risk of explosion
+AC 2011
IEC 60086-1 -  Primary batteries - Part 1: General EN 60086-1 2015
IEC 60192 -  Low pressure sodium vapour lamps - EN 60192 2001
Performance specifications
IEC 60216-1 -  Electrical insulating materials - Thermal EN 60216-1 2013
endurance properties - Part 1: Ageing
procedures and evaluation of test results
IEC 60216-2 -  Electrical insulating materials - Thermal EN 60216-2 2005
endurance properties - Part 2: Determination of
thermal endurance properties of electrical
insulating materials - Choice of test criteria
IEC 60243-1 -  Electric strength of insulating materials - Test EN 60243-1 2013
methods - Part 1: Tests at power frequencies
IEC 60423 -  Conduit systems for cable management - EN 60423 2007
Outside diameters of conduits for electrical
installations and threads for conduits and fittings
IEC 60529 -  Degrees of protection provided by enclosures (IP EN 60529 1991
Code)
+EN 1993
60529:1991/corrig
endum May 1993
)Under preparation. Stage at the time of publication: FprEN 60034-1:2017.
IEC 60662 (mod) -  High pressure sodium vapour lamps - EN 60662 2012
Performance specifications
+prAA 2017
IEC 60664-1 -  Insulation coordination for equipment within low- EN 60664-1 2007
voltage systems - Part 1: Principles,
requirements and tests
IEC 60947-1 -  Low-voltage switchgear and controlgear - Part 1: EN 60947-1 2007
General rules
IEC 62626-1 -  Low-voltage switchgear and controlgear EN 62626-1 2014
enclosed equipment - Part 1: Enclosed switch
outside the scope of IEC 60947-3 for various
applications, to provide isolation of electrical
equipment during repair and maintenance work
ISO 48 -  Rubber, vulcanized or thermoplastic_- - -
Determination of hardness (hardness between 10
IRHD and 100 IRHD)
ISO 178 -  Plastics - Determination of flexural properties EN ISO 178 2010
ISO 179 series Plastics - Determination of Charpy impact EN ISO 179 series
properties
ISO 262 -  ISO general purpose metric screw threads- - -
Selected sizes for screws, bolts and nuts
ISO 273 -  Fasteners - Clearance holes for bolts and screws EN 20273 1991
ISO 527-2 -  Plastics - Determination of tensile properties - EN ISO 527-2 2012
Part 2: Test conditions for moulding and
extrusion plastics
ISO 965-1 -  ISO general purpose metric screw threads - - -
Tolerances – Part 1: Principles and basic data
ISO 965-3 -  ISO general purpose metric screw threads- - -
Tolerances – Part 3: Deviations for constructional
screw threads
ISO 3601-1 -  Fluid power systems - O-rings – Part 1: Inside - -
diameters, cross-sections, tolerances and
designation codes
ISO 3601-2 -  Fluid power systems - O-rings - Part 2: Housing - -
dimensions for general applications
ISO 4014 -  Hexagon head bolts - Product grades A and B EN ISO 4014 2011
ISO 4017 -  Fasteners - Hexagon head screws - Product EN ISO 4017 2014
grades A and B
ISO 4026 -  Hexagon socket set screws with flat point EN ISO 4026 2003
ISO 4027 -  Hexagon socket set screws with cone point EN ISO 4027 2003
ISO 4028 -  Hexagon socket set screws with dog point EN ISO 4028 2003
ISO 4029 -  Hexagon socket set screws with cup point EN ISO 4029 2003
ISO 4032 -  Hexagon regular nuts (style 1) - Product grades EN ISO 4032 2012
A and B
ISO 4762 -  Hexagon socket head cap screws EN ISO 4762 2004
ISO 4892-2 -  Plastics - Methods of exposure to laboratory light EN ISO 4892-2 2013
sources - Part 2: Xenon-arc lamps
ISO 7380 -  Hexagon socket button head screws EN ISO 7380 2011
ISO 14583 -  Hexalobular socket pan head screws EN ISO 14583 2011
ANSI/UL 746B -  Polymeric Materials - Long-Term Property - -
Evaluations
ANSI/UL 746C -  Standard for Polymeric Materials - Use in - -
Electrical Equipment Evaluations
ASTM D 5964 -  Standard Practice for Rubber IRM 901, IRM 902, - -
and IRM 903 Replacement Oils for ASTM No. 1,
ASTM No. 2, ASTM No. 3 Oils, and IRM 905
formerly ASTM No. 5 Oil
Annex ZY
(informative)
Additional Information relating to the European ATEX Directive 2014/34/EU
ZY.1 Equipment Groups and Categories
In all cases Equipment Protection Levels (EPL) as defined by EN IEC 60079-0 are related to
the corresponding Equipment Groups and Equipment Categories according to table ZY.1. The
same applies if a standard makes reference to the intended use of equipment in Zones
according to the definitions in EN 60079-10-1 and EN 60079-10-2.
Table ZY.1
EN IEC 60079-0 Directive 2014/34/EU EN 60079-10-X
Equipment
EPL Group Equipment Group Zones
Category
Ma M1 Not Applicable
I I
Mb M2
Ga 1G 0
Gb II 2G 1
Gc 3G 2
II
Da 1D 20
Db III 2D 21
Dc 3D 22
ZY.2 Instructions
The manufacturer or his authorized representative in the Community is to draw up the instructions for
use in the required Community languages.

In clause 30.1 under: “instructions for safety addressing the following areas – installation and
erection;”
“Information other than the general requirements given in IEC 60079-14”
Is replaced by
“Information other than the general requirements given in EN 60079-14 and EN 50628”

NOTE EN 50628 - Erection of electrical installations in underground mines

ZY.3 Marking
ZY.3.1
The marking according to this standard is to be supplemented by the marking according to
Directive 2014/34/EU. Examples are given below.
European marking examples
Directive part Standard part Equipment example
I M2 Ex db I Mb Mining equipment,
Type of Protection flameproof enclosure “d”

II 2G Ex eb IIB T4 Gb Gas explosion protected equipment
Type of Protection increased safety “e”

II 1D Ex ma IIIC 120°C Da Dust explosion protected equipment,
Type of Protection encapsulation “m”
NOTE 1 Attention is drawn to the requirement in 29.3 f):
“The Ex marking for explosive gas atmospheres and explosive dust atmospheres shall be separate and
not combined;”
II 1 G   Ex ia IIB T4 Ga
II 1 D   Ex ia IIIC T120°C Da
Alternatively, the directive part of the marking may be combined and the standard part of the marking
kept separate, as follows:
II 1 GD Ex ia IIB T4 Ga
Ex ia IIIC T120°C Da
NOTE 2 For Ex Equipment intended to be put on the market in the EEA, CE marking is applicable.
For Ex Components intended to be put on the market in the EEA, CE marking is not applicable.

ZY.3.2
Contrary to 29.3 a) the marking is to always include the manufacturer’s name (not trademark)
and address. The address is to b
...