EN 60079-5:2015

SLOVENSKI STANDARD
01-julij-2015
(NVSOR]LYQHDWPRVIHUHGHO=DãþLWDRSUHPHVSROQMHQMHPVSHVNRPT,(&

Explosive atmospheres - Part 5: Equipment protection by powder filling "q" (IEC 60079-
5:2015)
Explosionsgefährdete Bereiche - Teil 5: Geräteschutz durch Sandkapselung "q" (IEC
60079-5:2015)
Atmosphères explosives - Partie 5: Protection du matériel par remplissage pulvérulent
"q" (IEC 60079-5:2015)
Ta slovenski standard je istoveten z: EN 60079-5:2015
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 60079-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2015
ICS 29.260.20 Supersedes EN 60079-5:2007
English Version
Explosive atmospheres - Part 5: Equipment protection by
powder filling "q"
(IEC 60079-5:2015)
Atmosphères explosives - Partie 5: Protection du matériel Explosionsgefährdete Bereiche - Teil 5: Geräteschutz durch
par remplissage pulvérulent "q" Sandkapselung "q"
(IEC 60079-5:2015) (IEC 60079-5:2015)
This European Standard was approved by CENELEC on 2015-03-24. 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 60079-5:2015 E
Foreword
The text of document 31/1156/FDIS, future edition 4 of IEC 60079-5, prepared by IEC/TC 31 "Equipment for
explosive atmospheres" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
(dop) 2015-12-24
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2018-03-24
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60079-5:2007.

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 60079-5:2015 was approved by CENELEC as a European
Standard without any modification.
IEC 60050 (series) NOTE Harmonized as EN 60050 (series).
IEC 60664-1:2007 NOTE Harmonized as EN 60664-1:2007.
IEC 60079 (series) NOTE Harmonized as EN 60079. (series)
IEC 61140 NOTE Harmonized as EN 61140.
IEC 60747-5-5 NOTE Harmonized as EN 60747-5-5.

- 3 - EN 60079-5:2015
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 -  Explosive atmospheres - Part 0: Equipment - - -
General requirements
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 60127 series Miniature fuses EN 60127 series
IEC 60529 -  Degrees of protection provided by enclosures - -
(IP Code)
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
ISO 2591-1 -  Test sieving - Part 1: Methods using test - -
sieves of woven wire cloth and perforated
metal plate
ISO 2859-1 -  Sampling procedures for inspection by - -
attributes - Part 1: Sampling schemes
indexed by acceptance quality limit (AQL) for
lot-by-lot inspection
ISO 3310-1 -  Test sieves - Technical requirements and - -
testing - Part 1: Test sieves of metal wire
cloth
ISO 3310-2 -  Test sieves - Technical requirements and - -
testing - Part 2: Test sieves of perforated
metal plate
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, ER 1.0.3, ER 1.0.5, ER 1.0.6 (partly)
– ER 1.1 (partly)
– ER 1.2.1 (partly), ER 1.2.2 (partly), ER 1.2.3 (partly), ER 1.2.5 (partly), ER 1.2.6 (partly), ER
1.2.7 (partly), ER 1.2.8
– ER 1.3.1
– ER 1.4.1 (partly), ER 1.4.2 (partly)
– ER 1.5.1, ER 1.5.3
– ER 1.6.4
– ER 2.0.1.3
– ER 2.0.2.1, ER 2.0.2.3 (partly)
– ER 2.1.1.2
– ER 2.1.2.3
– ER 2.2.1.1, ER 2.2.1.2
– ER 2.2.2.1, ER 2.2.2.2
– ER 2.3.1.2
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 60079-5 ®
Edition 4.0 2015-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Explosive atmospheres –
Part 5: Equipment protection by powder filling “q”

Atmosphères explosives –
Partie 5: Protection du matériel par remplissage pulvérulent “q”

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.260.20 ISBN 978-2-8322-2249-2

– 2 – IEC 60079-5:2015 © IEC 2015
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 7
4 Constructional requirements . 7
4.1 Containers . 7
4.1.1 Closing and sealing . 7
4.1.2 Pressure test of container . 8
4.1.3 Degree of protection of the container . 8
4.1.4 Filling procedure . 8
4.1.5 Containers that are not external enclosures . 8
4.2 Filling material . 9
4.2.1 Material specification . 9
4.2.2 Documentation . 9
4.2.3 Testing . 9
4.3 Distances . 9
4.3.1 Distances through filling material . 9
4.3.2 Distances surrounding free space . 11
4.4 Connections . 12
4.4.1 Equipment . 12
4.4.2 Ex Components . 12
4.5 Capacitors . 12
4.6 Cells and batteries . 12
4.7 Temperature limitations under overload conditions . 12
4.8 Temperature limitations under malfunction conditions . 12
4.8.1 General . 12
4.8.2 Fuse . 12
4.8.3 Malfunction exclusions . 13
4.8.4 Protective devices for temperature limitation . 16
4.8.5 Power supply prospective short-circuit current . 16
5 Verifications and tests . 16
5.1 Type verifications and tests . 16
5.1.1 Pressure type test of container . 16
5.1.2 Verification of the degree of protection of the enclosure . 17
5.1.3 Dielectric strength test of the filling material . 17
5.1.4 Maximum temperatures . 17
5.2 Routine verifications and tests . 18
5.2.1 Routine pressure test of container . 18
5.2.2 Dielectric strength test of the filling material . 18
6 Marking . 19
7 Instructions. 20
Bibliography . 21

IEC 60079-5:2015 © IEC 2015 – 3 –

Figure 1 – Distances through filling material . 11
Figure 2 – Test arrangement for the dielectric strength test of the filling material . 19

Table 1 – Distances through the filling material. 10
Table 2 – Creepage distances and distances through filling material . 15

– 4 – IEC 60079-5:2015 © IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
EXPLOSIVE ATMOSPHERES –
Part 5: Equipment protection by powder filling “q”

FOREWORD
1) The International Electrotechnical Commission (IEC)
...