BS EN 60079-31:2009 - Explosive atmospheres. Equipment dust ignition protection by enclosure "t"

BS EN 60079-31:2009

Explosive atmospheres. Equipment dust ignition protection by enclosure "t"

Status : Revised, Superseded, Withdrawn   Published : September 2010 Replaced By : BS EN 60079-31:2014

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IEC 60079-31:2008 is applicable to electrical equipment protected by enclosure and surface temperature limitation for use in explosive dust atmospheres. It specifies requirements for design, construction and testing of electrical equipment. 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 requirement of this standard shall take precedence. This first edition of IEC 60079-31 has been developed from the first edition of IEC 61241-1 (2004) which it now cancels and supersedes. The significant changes with respect to the previous edition are:


- Title changed to Equipment dust ignition protection by enclosure "t"


- Combination and rationalisation of practice A and B into a single practice, and some constructional requirements that may have applied to only one practice now apply to all enclosures


- Introduction of three levels of protection, "ta", "tb" and "tc"


- Defined test voltage ranges and overload conditions for thermal tests


- Introduction of a pressure test prior to the IP test


- Restrictions on power and voltage levels for level of protection "ta"


- Introduction of a variant of the IP6X test for level of protection "ta"


- Compulsory dust layer thermal test for protection level "ta" by surrounding the enclosure with dust to a depth of at least 500 mm on all available surfaces. The contents of the corrigendum of March 2009 have been included in this copy.




Standard NumberBS EN 60079-31:2009
TitleExplosive atmospheres. Equipment dust ignition protection by enclosure "t"
StatusRevised, Superseded, Withdrawn
Publication Date30 September 2010
Withdrawn Date31 July 2014
Normative References(Required to achieve compliance to this standard)EN 60079-0:2009, EN 60079-7:2007, EN 60127, IEC 60691, IEC 60034-1, IEC 60079-0, EN 60034-1:2004, IEC 60127, IEC 60079-7, EN 60691:2003, ISO 965-1, ISO 965-3
Informative References(Provided for Information)94/9/EC, IEC 60050-426
Replaced ByBS EN 60079-31:2014
ReplacesBS EN 61241-1:2004
International RelationshipsEN 60079-31:2009,IEC 60079-31:2008,IEC 60079-31:2008/COR1:2009
Draft Superseded By06/30153363 DC
DescriptorsIgnition, Thermal protection, Verification, Design, Protected electrical equipment, Type testing, Dust explosions, Electrical safety, Flammable atmospheres, Explosive atmospheres, Electrical equipment, Dust, Electric enclosures
ICS29.260.20
Title in FrenchAtmosphères explosives. Protection du matériel contre l'inflammation des poussières par enveloppe "t"
Title in GermanExplosionsfähige Atmosphäre. Geräte-Staubexplosionsschutz durch Gehäuse "t"
CommitteeEXL/31
ISBN978 0 580 57359 0
PublisherBSI
FormatA4
DeliveryNo
Pages18
File Size1.384 MB
Price£130.00


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