CENELEC
Project
| Reference | EN 60079-31:2009 |
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| Title | Explosive atmospheres - Part 31: Equipment dust ignition protection by enclosure "t" |
| Project Number | 21153 |
| Abstract/Scope | 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. |
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Published
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Status
| Current Stage code | 6060 |
|---|---|
| Current Stage code date | 2009-12-04 |
| Current Stage code deadline | 2010-07-01 |
| Deadline date for vote |
Legal
| Directive(s) | ATEX (94/9/EC) |
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| Mandate(s) | |
| Order Voucher |
Details
| IEC Technical Body | IEC/TC 31 |
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| Reference Document | IEC 60079-31:2008 (EQV) + corrigendum Mar. 2009 (EQV) |
| ICS | 29.260.20 - Electrical apparatus for explosive atmospheres |
| Keywords | Explosive atmospheres; Dust; Ignition protection |
| Note | Supersedes EN 61241-1:2004 + corr. Dec. 2006 |
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| Special National Condition(s) |
Environment
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Clause
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Categories - Aspects
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Product Life Cycle
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Information
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History
Implementation Dates
| date of Ratification (DOR) (1) | 2009-10-01 |
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| date of Availability (DAV) (2) | 2009-12-04 |
| date of Announcement (DOA) (3) | 2010-01-01 |
| date of Publication (DOP) (4) | 2010-07-01 |
| date of Withdrawal (DOW) (5) | 2012-10-01 |
Relations
| Supersedes | EN 61241-1:2004 EN 61241-1:2004/corrigendum Dec. 2006 |
|---|---|
| Superseded by | FprEN 60079-31:2012 |
| Normative reference (6) | ISO 965-1:1998 ISO 965-3:1998 EN 60034-1:2004 EN 60079-0:2009 EN 60079-7:2007 EN 60127-1:2006 EN 60691:2003 |
(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved
(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat
(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level
(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement
(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn
(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.
