EN 60079-11:2012
(Main)Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"
Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"
NEW! IEC 60079-11:2011 is now available as IEC Standards+ 60079-11:2011 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 60079-11:2011 specifies the construction and testing of intrinsically safe apparatus intended for use in an explosive atmosphere and for associated apparatus, which is intended for connection to intrinsically safe circuits which enter such atmospheres. This type of protection is applicable to electrical equipment in which the electrical circuits themselves are incapable of causing an explosion in the surrounding explosive atmospheres. This standard is also applicable to electrical equipment or parts of electrical equipment located outside the explosive atmosphere or protected by another Type of Protection listed in IEC 60079-0, where the intrinsic safety of the electrical circuits in the explosive atmosphere may depend upon the design and construction of such electrical equipment or parts of such electrical equipment. The electrical circuits exposed to the explosive atmosphere are evaluated for use in such an atmosphere by applying this standard. The requirements for intrinsically safe systems are provided in IEC 60079-25. This standard supplements and modifies the general requirements of IEC 60079-0, except as indicated in Table 1. Where a requirement of this standard conflicts with a requirement of IEC 60079-0, the requirements of this standard shall take precedence. This sixth edition cancels and replaces the fifth edition of IEC 60079-11 published in 2006, the first edition of IEC 61241-11 published in 2005, and partially replaces the second edition of IEC 60079-27 published in 2008 and constitutes a full technical revision. The significant changes with respect to the previous edition are listed below: - Inclusion of non-edition specific references to IEC 60079-0. - The merging of the apparatus requirements for FISCO from IEC 60079-27. - The merging of the requirements for combustible dust atmospheres from IEC 61241-11. - Clarification of the requirements for accessories connected to intrinsically safe apparatus; such as chargers and data loggers. - Addition of new test requirements for opto-isolators. - Introduction of Annex H about ignition testing of semiconductor limiting power supply circuits. The contents of the corrigendum of January 2012 have been included in this copy.
Explosionsgefährdete Bereiche - Teil 11: Geräteschutz durch Eigensicherheit "i"
Atmosphères explosives - Partie 11: Protection de l'équipement par sécurité intrinsèque "i"
NEW! La CEI 60079-11:2011 est maintenant disponible sous forme de IEC Standards+ 60079-11:2011 qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente. La CEI 60079-11:2011 spécifie la construction et les essais pour le matériel électrique de sécurité intrinsèque destiné à être utilisé dans les atmosphères explosives et pour le matériel électrique associé destiné à être relié à des circuits de sécurité intrinsèque qui entrent dans de telles atmosphères. Ce mode de protection s'applique aux équipements électriques dont les circuits sont eux-mêmes incapables de provoquer l'explosion de l'atmosphère environnante. La présente norme s'applique également aux équipements électriques ou aux parties de matériels électriques situés hors de l'atmosphère explosive ou protégés par un autre Mode de Protection cité dans la CEI 60079-0, lorsque la sécurité intrinsèque des circuits électriques situés dans l'atmosphère explosive peut dépendre de la conception et de la construction de ces matériels électriques ou de ces parties de matériels électriques. Les circuits électriques exposés à une atmosphère explosive sont évalués en vue de leur emploi dans une telle atmosphère en appliquant la présente Norme. Les exigences pour les systèmes de sécurité intrinsèque sont données dans la CEI 60079-25. La présente norme complète et modifie les exigences générales de la CEI 60079-0, à l'exception de ce qui est indiqué au Tableau 1. Lorsqu'une exigence de la présente norme entre en conflit avec une exigence de la CEI 60079-0, l'exigence de la présente Norme prévaut. Cette sixième édition annule et remplace la cinquième édition de la CEI 60079-11 publiée en 2006, la première édition de la CEI 61241-11 publiée en 2005, et remplace partiellement la seconde édition de la CEI 60079-27 publiée en 2008 dont elle constitue une révision technique complète. Les modifications importantes par rapport à l'édition antérieure sont indiquées ci-dessous: - Introduction d'une référence à la CEI 60079-0 non spécifique à l'édition; - L'incorporation des exigences de matériel issues de la CEI 60079-27 relatives au FISCO; - L'incorporation des exigences issues de la CEI 61241-11 relatives aux atmosphères de poussières combustibles; - La clarification des exigences relatives aux accessoires reliés à un matériel à sécurité intrinsèque; - tels que les chargeurs et les collecteurs de données; - Ajout de nouvelles exigences d'essai relatives aux isolateurs optiques; - l'introduction d'une Annexe H-au sujet des essais d'inflammation des dispositifs de limitation d'alimentation électrique à semi-conducteur. Le contenu du corrigendum de janvier 2012 a été pris en considération dans cet exemplaire.
Eksplozivne atmosfere - 11. del: Zaščita opreme z lastno varnostjo "i" (IEC 60079-11:2011)
Ta del standarda IEC 60079 določa konstrukcijo in preskušanje lastnovarnih naprav, namenjenih uporabi v eksplozivni atmosferi, in povezanih naprav, namenjenih povezavi z lastnovarnimi tokokrogi, ki vstopajo v take atmosfere. Ta vrsta zaščite se uporablja za električno opremo, v kateri električni tokokrogi sami ne morejo povzročiti eksplozije v okoliških eksplozivnih atmosferah. Ta standard se uporablja tudi za električno opremo ali dele električne opreme, ki je zunaj eksplozivne atmosfere ali jo varuje še ena vrsta zaščite, navedena v standardu IEC 60079-0, pri čemer je lastna varnost električnih tokokrogov v eksplozivni atmosferi lahko odvisna od zasnove in konstrukcije take električne opreme ali delov take električne opreme. Uporaba električnih tokokrogov, izpostavljenih eksplozivni atmosferi, se ovrednoti s tem standardom. Zahteve za lastnovarne sisteme so podane v standardu IEC 60079-25. Ta standard dopolnjuje in spreminja splošne zahteve standarda IEC 60079-0, razen kakor je prikazano v preglednici 1. Kadar je zahteva iz tega standarda v nasprotju z zahtevo iz standarda IEC 60079-0, imajo prednost zahteve iz tega standarda. Če se zahteve iz tega standarda uporabljajo za lastnovarne naprave in povezane naprave, se izraz »naprava« uporablja v celotnem standardu. Ta standard obravnava le električno opremo; zato izraz »oprema«, ki se uporablja v njem, vedno pomeni »električno opremo«. Če v eksplozivno atmosfero postavite povezano napravo, jo je treba zavarovati z ustrezno vrsto zaščite iz standarda IEC 60079-0, zato se zanjo uporabljajo zahteve te metode zaščite in ustrezni deli standarda IEC 60079-0.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2012
1DGRPHãþD
SIST EN 60079-11:2007
SIST EN 60079-27:2008
SIST EN 61241-11:2007
(NVSOR]LYQHDWPRVIHUHGHO =DãþLWDRSUHPH]ODVWQRYDUQRVWMRL ,(&
Explosive atmospheres - Part 11: Equipment protection by intrinsic safety i (IEC 60079-
11:2011)
Explosionsgefährdete Bereiche - Teil 11: Geräteschutz durch Eigensicherheit "i" (IEC
60079-11:2011)
Atmosphères explosives - Partie 11: Protection de l'équipement par sécurité intrinsèque
"i" (CEI 60079-11:2011)
Ta slovenski standard je istoveten z: EN 60079-11:2012
ICS:
29.260.20 (OHNWULþQLDSDUDWL]D Electrical apparatus for
HNVSOR]LYQDR]UDþMD explosive atmospheres
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 60079-11
NORME EUROPÉENNE
January 2012
EUROPÄISCHE NORM
ICS 29.260.20 Supersedes EN 60079-11:2007, EN 60079-27:2008 (partially), EN 61241-11:2006
English version
Explosive atmospheres -
Part 11: Equipment protection by intrinsic safety "i"
(IEC 60079-11:2011)
Atmosphères explosives - Explosionsgefährdete Bereiche -
Partie 11: Protection de l'équipement par Teil 11: Geräteschutz durch
sécurité intrinsèque "i" Eigensicherheit "i"
(CEI 60079-11:2011) (IEC 60079-11:2011)
This European Standard was approved by CENELEC on 2011-08-04. 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, 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.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60079-11:2012 E
Foreword
The text of document 31G/207/FDIS, future edition 6 of IEC 60079-11, prepared by SC 31G,
"Intrinsically-safe apparatus", of IEC/TC 31, "Equipment for explosive atmospheres" was submitted to the
IEC-CENELEC parallel vote and approved by CENELEC as EN 60079-11:2012.
The following dates are fixed:
(dop) 2012-07-06
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2014-08-04
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60079-11:2007, EN 61241-11:2006 and partially supersedes
EN 60079-27:2008 (see Annex ZY for significant changes).
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.
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 60079-11:2011 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 60079-15 NOTE Harmonized as EN 60079-15.
IEC 61086-1:2004 NOTE Harmonized as EN 61086-1:2004 (not modified).
IEC 62133 NOTE Harmonized as EN 62133.
- 3 - EN 60079-11:2012
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application 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 When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
IEC 60079-0 - Explosive atmospheres - EN 60079-0 -
Part 0: Equipment - General requirements
IEC 60079-7 - Explosive atmospheres - EN 60079-7 -
Part 7: Equipment protection by increased
safety "e"
IEC 60079-25 - Explosive atmospheres - EN 60079-25 -
Part 25: Intrinsically safe electrical systems
IEC 60085 - Electrical insulation - Thermal evaluation and EN 60085 -
designation
IEC 60112 - Method for the determination of the proof and EN 60112 -
the comparative tracking indices of solid
insulating materials
IEC 60127 Series Miniature fuses EN 60127 Series
IEC 60317-3 - Specifications for particular types of winding - -
wires -
Part 3: Polyester enamelled round copper
wire, class 155
IEC 60317-7 - Specifications for particular types of winding HD 555.7 S2 -
wires -
Part 7: Polyimide enamelled round copper
wire, class 220
IEC 60317-8 - Specifications for particular types of winding EN 60317-8 -
wires -
Part 8: Polyesterimide enamelled round
copper wire, class 180
IEC 60317-13 - Specifications for particular types of winding EN 60317-13 -
wires -
Part 13: Polyester or polyesterimide
overcoated with polyamide-imide enamelled
round copper wire, class 200
IEC 60529 - Degrees of protection provided by enclosures - -
(IP Code)
IEC 60664-1 2007 Insulation coordination for equipment within EN 60664-1 2007
low-voltage systems -
Part 1: Principles, requirements and tests
IEC 60664-3 2003 Insulation coordination for equipment within EN 60664-3 2003
low-voltage systems -
Part 3: Use of coating, potting or moulding for
protection against pollution
Publication Year Title EN/HD Year
IEC 61158-2 - Industrial communication networks - Fieldbus EN 61158-2 -
specifications -
Part 2: Physical layer specification and service
definition
IEC 62013-1 - Caplights for use in mines susceptible to EN 62013-1 -
firedamp -
Part 1: General requirements - Construction
and testing in relation to the risk of explosion
ANSI/UL 248-1 - Standard for low-voltage fuses - - -
Part 1: General requirements
- 5 - EN 60079-11:2012
Annex ZY
(informative)
Significant changes between this European Standard and EN 60079-11:2007
This European Standard supersedes EN 60079-11:2007.
The significant changes with respect to EN 60079-11:2007 are as listed below.
Type
Significant Changes Clause Minor and Extension Major
editorial technical
changes changes
Table 1
Inclusion of non-edition specific references to
X
EN 60079-11
e.g. 5.6.5.
The merging of the requirements for combustible
X
6.1.3
dust atmospheres from EN 61241-11
Annex G
The merging of the apparatus requirements for
X
FISCO from EN 60079-27
Clarification of the requirements for accessories 6.2.5
connected to intrinsically safe apparatus such as 7.4.9 X
chargers and data loggers.
10.11
Addition of new test requirements for opto-
X
isolators
Annex H
Introduction of Annex H about ignition testing of
X
semiconductor limiting power supply circuits
NOTE: The technical changes referred include the significant technical changes from the EN
revised but is not an exhaustive list of all modifications from the previous version.
Explanations:
A) Definitions
Minor and editorial changes clarification
decrease of technical requirements
minor technical change
editorial corrections
Changes in a standard classified as ‘Minor and editorial changes’ refer to changes regarding the previous
standard, which modify requirements in an editorial or a minor technical way. Also changes of the wording
to clarify technical requirements without any technical change are classified as ‘Minor and editorial
changes’.
A reduction in level of existing requirement is also classified as ‘Minor and editorial changes’
Extension addition of technical options
Changes in a standard classified as ‘extension’ refers to changes regarding the previous standard, which
add new or modify existing technical requirements, in a way that new options are given, but without
increasing requirements for equipment that was fully compliant with the previous standard. Therefore
these ‘extensions’ will not have to be considered for products in conformity with the preceding edition.
Major technical change addition of technical requirements
increase of technical requirements
Changes in a standard classified as ‘Major technical change’ refer to changes regarding the previous
standard, which add new or increase the level of existing technical requirements, in a way that a product
in conformity with the preceding standard will not always be able to fulfil the requirements given in the
standard. ‘Major technical changes’ have to be considered for products in conformity with the preceding
edition. For every change classified as ‘Major Technical Change’ additional information is provided in
clause B) of the Annex ZY.
Note: These changes represent current technological knowledge . However, these changes should not
normally have an influence on equipment already placed on the market.
B) Information about the background of ‘Major Technical Changes’
None.
Instructions:
The manufacturer or his authorised representative in the Community is to draw up the instructions for use
in the required Community languages.
Marking:
The marking in this standard is to be supplemented/modified by the marking according to Directive
94/9/EC. Examples are given below.
European marking examples
Directive part Standard part Equipment example
Ex ia IIC T4
–25 °C ≤ Ta ≤ +50 °C Self-contained intrinsically safe apparatus
II 1G
Ex ib IIB T4 Intrinsically safe apparatus designed to
Ui = 24 V Ii = 80 mA Pi = 0.48 W be connected to other apparatus
II 2G
[Ex ib] I
Associated apparatus
Uo = 20 V Io = 300 mA Po = 1.5 W
I (M2)
Intrinsically safe apparatus Level of
Ex ib [ia IIC Ga] IIB T6 Gb
Protection ‘ib’ with ‘ia’ outputs
II 2 (1) G
Ui = 30 V, Uo = 12 V, Io = 100 mA
Associated apparatus protected by a
Ex db [ia Ga] IIB T4 Gb
flameproof enclosure
II 2 (1) G
Uo = 12 V, Io = 200 mA Po = 0.6 W
see also ATEX Guidelines 10.3 and Annex ZZ.
- 7 - EN 60079-11:2012
Annex ZZ
(informative)
Coverage of Essential Requirements of EU Directives
This European Standard has been prepared under a mandate given to CENELEC by the European Union
and the European Free Trade Association and within its scope the standard covers only the following
essential requirements out of those given in Annex II of the EU Directive 94/9/EC:
– ER 1.0.1 indent 2, ER 1.0.2 (partly), ER 1.0.3 (partly), ER 1.0.4 (partly), ER 1.0.5 (partly), ER 1.0.6
(partly)
– ER 1.1 (partly)
– ER 1.2.1 (partly), ER 1.2.2 (partly), ER 1.2.4 (partly), ER 1.2.6 (partly), ER 1.2.8 (partly)
– ER 1.3.1 (partly)
– ER 1.4 (partly)
– ER 2.0.1.1 to ER 2.0.1.4
– ER 2.0.2.1 (partly), ER 2.0.2.2, ER 2.0.2.3
– ER 2.1.1.1 to ER 2.1.1.3
– ER 2.1.2.1 to ER 2.1.2.4
– ER 2.2.1.1 to ER 2.2.1.3
– ER 2.2.2.1 to ER 2.2.2.4
– ER 2.3.1.1, ER 2.3.1.2
– ER 2.3.2.1 to ER 2.3.2.3
Compliance with this standard provides one means of conformity with the specified essential
requirements of the Directive[s] concerned.
WARNING: Other requirements and other EU Directives may be applicable to the products falling within
the scope of this standard.
IEC 60079-11 ®
Edition 6.0 2011-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Explosive atmospheres –
Part 11: Equipment protection by intrinsic safety "i"
Atmosphères explosives –
Partie 11: Protection de l’équipement par sécurité intrinsèque «i»
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XG
ICS 29.260.20 ISBN 978-2-88912-520-3
– 2 – 60079-11 IEC:2011
CONTENTS
FOREWORD . 7
1 Scope . 9
2 Normative references. 14
3 Terms and definitions . 15
4 Grouping and classification of intrinsically safe apparatus and associated apparatus . 20
5 Levels of protection and ignition compliance requirements of electrical apparatus . 21
5.1 General . 21
5.2 Level of protection "ia" . 21
5.3 Level of protection "ib" .
...
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