EN 60079-15:2005

EUROPEAN STANDARD EN 60079-15
NORME EUROPÉENNE
EUROPÄISCHE NORM October 2005

ICS 29.260.20 Supersedes EN 60079-15:2003

English version
Electrical apparatus for explosive gas atmospheres
Part 15: Construction, test and marking of type of protection "n"
electrical apparatus
(IEC 60079-15:2005)
Matériel électrique pour atmosphères Elektrische Betriebsmittel für
explosives gazeuses gasexplosionsgefährdete Bereiche
Partie 15: Construction, essais et Teil 15: Konstruktion, Prüfung
marquage des matériels électriques und Kennzeichnung von elektrischen
du mode de protection "n" Betriebsmitteln der Zündschutzart "n"
(CEI 60079-15:2005) (IEC 60079-15:2005)

This European Standard was approved by CENELEC on 2005-06-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60079-15:2005 E
Foreword
The text of document 31/558/FDIS, future edition 3 of IEC 60079-15, prepared by IEC TC 31,
Electrical apparatus for explosive atmospheres, was submitted to the IEC-CENELEC parallel vote and
was approved by CENELEC as EN 60079-15 on 2005-06-01.
This European Standard is to be read in conjunction with EN 60079-0.
This European Standard supersedes EN 60079-15:2003.
The significant technical changes with respect to EN 60079-15:2003 are as follows:
– linking the standard to EN 60079-0 and adding Table 1 to show the connections;
– references to third party testing stations removed;
– adding the definition of associated energy limiting apparatus [nL] and [Ex nL];
– definitions eliminated that also appear in EN 60079-0;
– elimination of n-pressurization, all pressurization requirements now covered by EN 60079-2;
– air gap spark test requirement added for motors over 100 kW;
– added risk assessment tables for motors over 1 kV and over 100 kW;
– requirements changed for motors operating with frequency converters;
– references to other IEC and European standards updated for luminaires;
– caplights and handlights addressed by reference to EN 60079-0;
– creepage and clearance requirements for low powered apparatus between 60 V a.c. up to
250 V a.c. added in Table 10;
– requirement for plugs and sockets to maintain the degree of protection expanded;
– cable clamping test eliminated;
– insertion and removal torque values for E40/E39 lamp caps adjusted downward;
– high-voltage impulse test for ballasts eliminated;
– changes made to test and acceptance criteria in luminaire starter and ignitor tests;
– ignition tests for large or high-voltage machines added;
– marking and documentation sections changed to reflect changes elsewhere in the standard;
– manufacturer’s responsibility section dropped and replaced with instructions section.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2006-05-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-06-01
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and covers essential requirements of
EC Directive 94/9/EC. See Annex ZZ.
Annexes ZA and ZZ have been added by CENELEC.
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- 3 - EN 60079-15:2005
Endorsement notice
The text of the International Standard IEC 60079-15:2005 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 60034-17 NOTE  Harmonized as CLC/TS 60034-17:2004 (not modified).
IEC 60068-2-6 NOTE  Harmonized as EN 60068-2-6:1995 (not modified).
IEC 60079-18 NOTE  Harmonized as EN 60079-18:2004 (not modified).
IEC 60297 NOTE  Harmonized in the HD 493 and EN 60297 series (not modified).
__________
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 Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
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