EN 60079-0:2006
(Main)Electrical apparatus for explosive gas atmospheres - Part 0: General requirements
Electrical apparatus for explosive gas atmospheres - Part 0: General requirements
Superseded by EN 60079-0:2009
Elektrische Betriebsmittel für gasexplosionsgefährdete Bereiche - Teil 0: Allgemeine Anforderungen
Matériel électrique pour atmosphères explosives gazeuses - Partie 0: Règles générales
Električne naprave za eksplozivne plinske atmosfere - 0. del: Splošne zahteve (IEC 60079-0:2004, spremenjen)
General Information
Relations
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EUROPEAN STANDARD
EN 60079-0
NORME EUROPÉENNE
July 2006
EUROPÄISCHE NORM
ICS 29.260.20 Supersedes EN 60079-0:2004
English version
Electrical apparatus for explosive gas atmospheres
Part 0: General requirements
(IEC 60079-0:2004, modified)
Matériel électrique pour atmosphères Elektrische Betriebsmittel für
explosives gazeuses gasexplosionsgefährdete Bereiche
Partie 0: Règles générales Teil 0: Allgemeine Anforderungen
(CEI 60079-0:2004, modifiée) (IEC 60079-0:2004, modifiziert)
This European Standard was approved by CENELEC on 2005-09-13. 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, 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 and the 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
© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60079-0:2006 E
Foreword
The text of document 31/474A/FDIS, future edition 4 of IEC 60079-0, 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 60079-0 on 2004-03-01.
A draft amendment to the European Standard EN 60079-0:2004, prepared by the Technical Committee
CENELEC TC 31, Electrical apparatus for explosive atmospheres - General requirements, was submitted
to the formal vote and was approved by CENELEC on 2005-09-13 to be combined with the published
standard and published as new edition of EN 60079-0.
This European Standard supersedes EN 60079-0:2004.
The following dates were fixed:
– latest date by which the amendment has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2007-02-01
– latest date by which the national standards conflicting
with the amendment have to be withdrawn (dow) 2008-10-01
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.
Clauses, subclauses, notes, tables and figures which are additional to those in IEC 60079-0 are prefixed
“Z”.
Annexes ZA, ZB and ZZ have been added by CENELEC.
___________
- 3 - EN 60079-0:2006
Endorsement notice
The text of the International Standard IEC 60079-0:2004 was approved by CENELEC as a European
Standard with agreed common modifications as given below.
COMMON MODIFICATIONS
1 Scope
Add:
This European Standard EN 60079-0 covers Category M2, 2G and 3G apparatus and partly also
Category M1 and 1G.
In all cases where apparatus are involved the references to zones shall be read:
Zone 1 Category 2G
Zone 2 Category 3G
3 Terms and definitions
Add:
3.Z1
category
within an apparatus group, a category is the classification according to the required level of protection
NOTE 1 The term "apparatus" used throughout this standard, has the same meaning as the term "equipment" used
in EC Directive 94/9/EC.
NOTE 2 The categories are defined as given in Annex ZA.
6 Requirement for all electrical apparatus
Add:
6.Z1 Operating faults
6.Z1.1 Equipment, which is intended to be used in Zone 1, must be so designed and constructed as
to prevent ignition sources arising, even in the event of frequently occurring disturbances or equipment
operating faults, which normally have to be taken into account.
6.Z1.2 Equipment, which is intended to be used in Zone 2, must be so designed and constructed as
to prevent foreseeable ignition sources which can occur during normal operation.
6.Z2 Overloading of equipment
Dangerous overloading of equipment must be prevented at the design stage by means of integrated
measurement, regulation and control devices, such as over-current cut-off switches, temperature limiters,
differential pressure switches, flow meters, time-lag relays, over speed monitors and/or similar types of
monitoring devices.
29 Marking
29.2 General
Add after a):
z1) address of the manufacturer;
Add after j):
z2) CE marking together with the number of the notified body, which performed the quality assessment;
NOTE Z1 This marking to be included only for certain products as required by EC Directive 94/9/EC.
z3) year of construction;
z4) the specific marking of explosion protection followed by the symbol of the Equipment-group and
Category;
z5) for Equipment-group II, the letter "G" (concerning explosive atmospheres caused by gases, vapours
or mists);
z6) for Equipment-group I, the letter "M" for mining.
30 Instructions
Add:
30.Z1 Languages
The instructions must be drawn up in one of the Community languages by the manufacturer or his
authorized representative in the Community.
On being put into service, all equipment must be accompanied by a translation of the instruction in the
language or languages of the country in which the equipment or protective system is to be used and by
the instructions in the original language.
This translation must be made by either the manufacturer or his authorized representative established in
the Community or the person introducing the equipment into the language area in question.
By way of derogation from this requirement, the maintenance instructions for use by the specialist
personnel employed by the manufacturer or authorized representative established in the Community may
be drawn up in a single Community language understood by that personnel.
30.Z2 Documents
The instructions must contain the drawings and diagrams necessary for the putting into service,
maintenance, inspection, checking of correct operation and, where appropriate, repair of the equipment,
together with all useful instructions, in particular with regard to safety.
30.Z3 Literature
Literature describing the equipment must not contradict the instructions with regard to safety aspects.
Bibliography
Add the following notes for the standards indicated:
IEC 60079-14 NOTE Harmonized as EN 60079-14:2003 (not modified).
IEC 60079-17 NOTE Harmonized as EN 60079-17:2003 (not modified).
- 5 - EN 60079-0:2006
Add:
Annex ZA
(informative)
Classification of Equipment-groups into Categories
ZA.1 Categories
ZA.1.1 Equipment-group I
ZA.1.1.1 Category M1
Equipment-group I Category M1 comprises equipment designed and, where necessary, equipped with
additional special means of protection to be capable of functioning in conformity with the operational
parameters established by the manufacturer and ensuring a very high level of protection.
Equipment in this category is intended for use in underground parts of mines as well as those parts of
surface installations of such mines endangered by firedamp and/or combustible dust.
Equipment in this category is required to remain functional, even in the event of rare incidents relating to
equipment, with an explosive atmosphere present, and is characterized by means of protection such that:
- either, in the event of failure of one means of protection, at least an independent second means
provides the requisite level of protection,
- or the requisite level of protection is assured in the event of two faults occurring independently of each
other.
ZA.1.1.2 Category M2
Category M2 comprises equipment designed to be capable of functioning in conformity with the
operational parameters established by the manufacturer and ensuring a high level of protection.
Equipment in this category is intended for use in underground parts of mines as well as those parts of
surface installations of such mines likely to be endangered by firedamp and/or combustible dust.
This equipment is intended to be de-energized in the event of an explosive atmosphere.
The means of protection relating to equipment in this category assure the requisite level of protection
during normal operation and also in the case of more severe operating conditions, in particular those
arising from rough handling and changing environmental conditions.
ZA.1.2 Equipment-group II
ZA.1.2.1 Category 1
Equipment-group II Category 1 comprises equipment designed to be capable of functioning in conformity
with the operational parameters established by the manufacturer and ensuring a very high level of
protection.
Equipment in this category is intended for use in areas in which explosive atmospheres caused by
mixtures of air and gases, vapours or mists or by air/dust mixtures are present continuously, for long
periods or frequently.
Equipment in this category must ensure the requisite level of protection, even in the event of rare
incidents relating to equipment, and is characterized by means of protection such that:
- either, in the event of failure of one means of protection, at least an independent second means
provides the requisite level of protection,
- or the requisite level of protection is assured in the event of two faults occurring independently of each
other.
ZA.1.2.2 Category 2
Category 2 comprises equipment designed to be capable of functioning in conformity with the operational
parameters established by the manufacturer and of ensuring a high level of protection.
Equipment in this category is intended for use in areas in which explosive atmospheres caused by gases,
vapours, mists or air/dust mixtures are likely to occur.
The means of protection relating to equipment in this category ensure the requisite level of protection,
even in the event of frequently occurring disturbances or equipment faults which normally have to be
taken into account.
ZA.1.2.3 Category 3
Category 3 comprises equipment designed to be capable of functioning in conformity with the operating
parameters established by the manufacturer and ensuring a normal level of protection.
Equipment in this category is intended for use in areas in which explosive atmospheres caused by gases,
vapours, mists, or air/dust mixtures are unlikely to occur or, if they do occur, are likely to do so only
infrequently and for a short period only.
Equipment in this category ensures the requisite level of protection during normal operation.
- 7 - EN 60079-0:2006
Annex ZB
(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
1) 2)
IEC 60034-5 – Rotating electrical machines - Part 5: EN 60034-5 2001
Degrees of protection provided by the integral
design of rotating electrical machines (IP
code) - Classification
1) 2)
IEC 60079-1 – Electrical apparatus for explosive gas EN 60079-1 2004
atmospheres - + corr. April 2006
Part 1: Flameproof enclosures 'd'
1) 2)
IEC 60079-2 – Electrical apparatus for explosive gas EN 60079-2 2004
atmospheres - + corr. April 2006
Part 2: Pressurized enclosures "p"
1)
IEC 60079-4 – Electrical apparatus for explosive gas - -
atmospheres - Part 4: Method of test for
ignition temperature
1)
IEC 60079-5 – Electrical apparatus for explosive gas - -
atmospheres - Part 5: Powder filling 'q'
1)
IEC 60079-6 – Electrical apparatus for explosive gas - -
atmospheres - Part 6: Oil-immersion "o"
1) 2)
IEC 60079-7 – Electrical apparatus for explosive gas EN 60079-7 2003
atmospheres - Part 7: Increased safety "e"
1) 2)
IEC 60079-10 – Electrical apparatus for explosive gas EN 60079-10 2003
atmospheres - Part 10: Classification of
hazardous areas
1)
IEC 60079-11 – Electrical apparatus for explosive gas -
-
atmospheres - Part 11: Intrinsic safety "i"
1) 2)
IEC 60079-15 – Electrical apparatus for explosive gas EN 60079-15 2005
atmospheres - Part 15: Type of protection "n"
1) 2)
IEC 60079-18 – Electrical apparatus for explosive gas EN 60079-18 2004
atmospheres - Part 18: Construction, test + corr. April 2006
and marking of type of protection
encapsulation "m" electrical apparatus
1)
Undated reference.
2)
Valid edition at date of issue.
Publication Year Title EN/HD Year
1) 2)
IEC 60079-25 – Electrical apparatus for explosive gas EN 60079-25 2004
atmospheres - Part 25: Intrinsically safe + corr. April 2006
systems
1) 2)
IEC 60079-26 (mod) – Electrical apparatus for explosive gas EN 60079-26 2004
atmospheres - Part 26: Construction, test and
marking of Group II Category 1 G electrical
apparatus
1) 2)
IEC 60086-1 – Primary batteries -
...
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