EN 60079-18:2015
(Main)Explosive atmospheres - Part 18: Equipment protection by encapsulation "m"
Explosive atmospheres - Part 18: Equipment protection by encapsulation "m"
NEW! IEC 60079-18:2014 is available as IEC Standards+ 60079-18:2014 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 60079-18:2014 gives the specific requirements for the construction, testing and marking of electrical equipment, parts of electrical equipment and Ex components with the type of protection encapsulation "m" intended for use in explosive gas atmospheres or explosive dust atmospheres. This part applies only for encapsulated electrical equipment, encapsulated parts of electrical equipment and encapsulat ed Ex components (hereinafter always referred to as "m" equipment) where the rated voltage does not exceed 11 kV. The application of electrical equipment in atmospheres, which may contain explosive gas as well as combustible dust simultaneously, may require additional protective measures. This standard does not apply to dusts of explosives, which do not require atmospheric oxygen for combustion, or to pyrophoric substances. This standard does not take account of any risk due to an emission of flammable or toxic gas from the dust. This standard supplements and modifies the general requirements of IEC 60079-0. Where a requirement of this standard conflicts with a requirement of IEC 60079-0, the requireme nt of this standard takes precedence. This International Standard is to be used in conjunction with IEC 60079-0, Explosive atmospheres - Part 0: Equipment-General requirements.This fourth edition cancels and replaces the third edition of IEC 60079-18:2009, and constitutes a technical revision. Please refer to the foreword of the document for a listing of the technical changes with respect to the previous edition. Keywords: encapsulation "m", explosive gas atmospheres, explosive dust atmospheres
Explosionsgefährdete Bereiche - Teil 18: Geräteschutz durch Vergusskapselung „m“
Atmosphères explosives - Partie 18: Protection du matériel par encapsulage "m"
NEW! IEC 60079-18:2014 est disponible sous forme de IEC Standards+ 60079-18:2014 qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente. L'IEC 60079-18:2014 définit les exigences spécifiques à la construction, aux essais et au marquage des matériels électriques, des parties de matériels électriques et des composants Ex protégés par encapsulage de type "m" et destinés à une utilisation dans les atmosphères explosives gazeuses ou les atmosphères explosives poussiéreuses. La présente partie ne s'applique qu'aux matériels électriques protégés par encapsulage, aux parties de matériel électrique protégées par encapsulage et aux composants Ex protégés par encapsulage (ci-après toujours dénommés matériel "m") pour lesquels la tension assignée n'excède pas 11 kV. L'utilisation du matériel électrique en atmosphère pouvant contenir simultanément du gaz explosif et des poussières combustibles peut nécessiter des mesures de protection supplémentaires. La présente Norme ne s'applique pas aux poussières d'explosifs qui n'exigent pas d'oxygène de l'air pour leur combustion ni aux substances pyrophoriques. La présente Norme ne tient pas compte des risques, quels qu'ils soient, résultant d'une émission de gaz inflammable ou toxique provenant de la poussière. La présente Norme complète et modifie les exigences générales de l'IEC 60079-0. Si une exigence de la présente Norme est en conflit avec une exigence de l'IEC 60079-0, l'exigence de la présente Norme a préséance. Cette Norme Internationale doit être utilisée conjointement avec l'IEC 60079-0, Atmosphères explosives - Partie 0: Matériel - Exigences générales. Cette quatrième édition annule et remplace la troisième édition de l'IEC 60079-18:2009. Cette édition constitue une révision technique. Se référer à l'avant-propos du document pour obtenir une liste des modifications techniques par rapport à l'édition précédente. Mots clés: encapsulage de type "m", atmosphères explosives gazeuses, atmosphère s explosives poussiéreuses
Eksplozivne atmosfere - 18. del: Zaščita opreme z zalivanjem z zalivno maso "m" (IEC 60079-18:2014)
Ta del standarda IEC 60079 vsebuje posebne zahteve za konstrukcijo, preskušanje in označevanje električne opreme, delov električne opreme in komponent Ex s tipom zaščitne enkapsulacije »m«, ki je namenjena za uporabo v eksplozivnih plinskih atmosferah ali eksplozivnih prašnih atmosferah.
Ta del se uporablja samo za enkapsulirano električno opremo, enkapsulirane dele električne opreme in enkapsulirane komponente Ex (v nadaljnjem besedilu vedno imenovane oprema »m«), pri katerih nazivna napetost ne presega 11 kV.
Uporaba električne opreme v atmosferah, ki lahko hkrati vsebujejo eksploziven plin in gorljivi prah, lahko zahteva dodatne zaščitne ukrepe.
Ta standard se ne uporablja za prah eksplozivov, ki za zgorevanje ne potrebujejo atmosferskega kisika, ali za piroforne snovi.
Ta standard ne upošteva nobenega tveganja zaradi emisije vnetljivega ali strupenega plina iz prahu.
Ta standard dopolnjuje in spreminja splošne zahteve standarda IEC 60079-0. Kadar je zahteva iz tega standarda v nasprotju z zahtevo iz standarda IEC 60079-0, ima prednost zahteva iz tega standarda.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2015
(NVSOR]LYQHDWPRVIHUHGHO =DãþLWDRSUHPH]]DOLYDQMHP]]DOLYQRPDVR
P ,(&
Explosive atmospheres - Part 18: Equipment protection by encapsulation "m" (IEC 60079
-18:2014)
Explosionsgefährdete Bereiche - Teil 18: Geräteschutz durch Vergusskapselung
"m" (IEC 60079-18:2014)
Atmosphères explosives - Partie 18: Protection du matériel par encapsulage "m" (IEC
60079-18:2014)
Ta slovenski standard je istoveten z: EN 60079-18:2015
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 60079-18
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2015
ICS 29.260.20 Supersedes EN 60079-18:2009
English Version
Explosive atmospheres - Part 18: Equipment protection by
encapsulation "m"
(IEC 60079-18:2014)
Atmosphères explosives - Partie 18: Protection du matériel Explosionsgefährdete Bereiche - Teil 18: Geräteschutz
par encapsulage "m" durch Vergusskapselung "m"
(IEC 60079-18:2014) (IEC 60079-18:2014)
This European Standard was approved by CENELEC on 2015-01-15. 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 60079-18:2015 E
Foreword
The text of document 31/1152/FDIS, future edition 4 of IEC 60079-18, prepared by IEC/TC 31 "Equipment
for explosive atmospheres" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC
as EN 60079-18:2015.
The following dates are fixed:
(dop) 2015-10-24
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2018-01-16
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60079-18:2009.
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.
For the relationship with EU Directive see informative Annex ZZ, which is an integral part of this document.
Endorsement notice
The text of the International Standard IEC 60079-18:2014 was approved by CENELEC as a European
Standard without any modification.
IEC 60079-1 NOTE Harmonized as EN 60079-1.
IEC 60079-2 NOTE Harmonized as EN 60079-5.
IEC 60079-5 NOTE Harmonized as EN 60079-5.
IEC 60079-6 NOTE Harmonized as EN 60079-6.
IEC 60079-10-1 NOTE Harmonized as EN 60079-10-1.
IEC 60079-10-2 NOTE Harmonized as EN 60079-10-2.
IEC 60079-14 NOTE Harmonized as EN 60079-14.
IEC 60079-28 NOTE Harmonized as EN 60079-28.
IEC 60086-1 NOTE Harmonized as EN 60086-1.
IEC 60622 NOTE Harmonized as EN 60622.
IEC 60604-1 NOTE Harmonized as EN 60604-1.
IEC 60747-5-5 NOTE Harmonized as EN 60747-5-5.
IEC 61951-1 NOTE Harmonized as EN 61951-1.
IEC 61951-2 NOTE Harmonized as EN 61951-2.
ISO 13849-1 NOTE Harmonized as EN ISO 13849-1.
- 3 - EN 60079-18:2015
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 (mod) - Explosive atmospheres -- Part 0: Equipment - EN 60079-0 -
General requirements
+A11 2013
IEC 60079-7 - Explosive atmospheres -- Part 7: Equipment EN 60079-7 -
protection by increased safety "e"
IEC 60079-11 - Explosive atmospheres -- Part 11: Equipment EN 60079-11 -
protection by intrinsic safety "i"
IEC 60079-15 - Explosive atmospheres -- Part 15: Equipment EN 60079-15 -
protection by type of protection "n"
IEC 60079-26 - Explosive atmospheres -- Part 26: Equipment EN 60079-26 -
with equipment protection level (EPL) Ga
IEC 60079-31 - Explosive atmospheres -- Part 31: Equipment EN 60079-31 -
dust ignition protection by enclosure "t"
IEC 60127 series Miniature fuses -- Part 1: Definitions for EN 60127 series
miniature fuses and general requirements for
miniature fuse-links
IEC 60243-1 - Electric strength of insulating materials - Test EN 60243-1 -
methods -- Part 1: Tests at power frequencies
IEC 60691 - Thermal-links - Requirements and application EN 60691 -
guide
IEC 60730-2-9 (mod) - Automatic electrical controls for household EN 60730-2-9 -
and similar use - Part 2-9: Particular
requirements for temperature sensing
controls
+AA
IEC 60738-1 - Thermistors - Directly heated positive EN 60738-1 -
temperature coefficient -- Part 1: Generic
specification
IEC 61140 - Protection against electric shock - Common EN 61140 -
aspects for installation and equipment
IEC 61558-1 - Safety of power transformers, power supplies, EN 61558-1 -
reactors and similar products -- Part 1:
General requirements and tests
+EN 61558- 2006
1:2005/corrigendum
Aug. 2006
IEC 61558-2-6 - Safety of transformers, reactors, power EN 61558-2-6 -
supply units and similar products for supply
voltages up to 1 100 V -- Part 2-6: Particular
requirements and tests for safety isolating
transformers and power supply units
incorporating safety isolating transformers
IEC 62326-4-1 - Printed boards -- Part 4: Rigid multilayer EN 62326-4-1 -
printed boards with interlayer connections -
Sectional specification -- Section 1: Capability
Detail Specification - Performance levels A, B
and C
- 5 - EN 60079-18:2015
Annex ZZ
(informative)
Coverage of Essential Requirements of EC Directives
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission 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 EC Directive 94/9/EC:
– ER 1.0.1, ER 1.0.2 (partly), ER 1.0.4 (partly), ER 1.0.5 (partly)
– ER 1.1 (partly)
– ER 1.2.4, ER 1.2.8 (partly)
– ER 1.3.1 (partly) ER 1.3.3 (partly), ER 1.3.4 (partly)
– ER 1.4.1 (partly), ER 1.4.2 (partly)
– ER 1.5.1, ER 1.5.2
– ER 1.6.4 (partly),
– ER 2.0.1 (partly)
– ER 2.0.2.1 (partly), ER 2.0.2.3 (partly)
– ER 2.1.1.1 (partly), ER 2.1.1.2 (partly)
– ER 2.1.2.1 (partly), ER 2.1.2.2 (partly) ER 2.1.2.3 (partly)
– ER 2.2.1.1 (partly), ER 2.2.1.2 (partly)
– ER 2.2.2.1 (partly), ER 2.2.2.2 (partly)
– ER 2.3.1.1, ER 2.3.1.2
– ER 2.3.2.1, ER 2.3.2.2
Compliance with this standard provides one means of conformity with the specified essential
requirements of the Directive[s] concerned.
WARNING: Other requirements and other EC Directives may be applicable to the products
falling within the scope of this standard.
IEC 60079-18 ®
Edition 4.0 2014-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Explosive atmospheres –
Part 18: Equipment protection by encapsulation “m”
Atmosphères explosives –
Partie 18: Protection du matériel par encapsulage "m"
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX W
ICS 29.260.20 ISBN 978-2-8322-1994-2
– 2 – IEC 60079-18:2014 IEC 2014
CONTENTS
FOREWORD . 5
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 General . 10
4.1 Level of protection (equipment protection level (EPL)) . 10
4.2 Additional requirements for levels of protection “ma” and “mb” . 10
4.3 Additional requirements for level of protection “ma” . 10
4.4 Rated voltage and prospective short circuit current . 11
5 Requirements for compounds . 11
5.1 General . 11
5.2 Specification . 11
5.3 Properties of the compound . 11
5.3.1 Water absorption . 11
5.3.2 Dielectric strength . 11
6 Temperatures . 12
6.1 General . 12
6.2 Determination of the limiting temperatures . 12
6.2.1 Maximum surface temperature . 12
6.2.2 Temperature of the compound . 12
6.3 Temperature limitation . 12
7 Constructional requirements . 12
7.1 General . 12
7.2 Determination of faults . 13
7.2.1 Fault examination . 13
7.2.2 Components considered as not subject to fail . 13
7.2.3 Isolating components . 14
7.2.4 Infallible separation distances . 14
7.3 Free space in the encapsulation . 15
7.3.1 Group III “m” equipment . 15
7.3.2 Group I and Group II “m” equipment . 16
7.4 Thickness of the compound. 17
7.4.1 “m” equipment . 17
7.4.2 Windings for electrical machines . 19
7.4.3 Rigid, multi-layer printed wiring boards with through connections . 19
7.5 Switching contacts . 20
7.5.1 General .
...
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