COMPLIANCE WITH IEC STANDARDS AND EUROPEAN NORMATIVES

EQUIPMENT FORM OF PROTECTION CHANGING STANDARDS REFERENCES
Protection Method Code CENELEC STANDARD NEW IEC BASED STANDARD
General Requirements N/A EN 50014 : 1997 +A1 A2 EN 60079-0 : 2006 (IEC 60079-1 : 2003)
 
Flameproof Ex d EN 50018 : 2000 +A1 EN 60079-1 : 2004 (IEC 60079-1 : 2003
Intrinsic Safety Ex i EN 50020 : 2002 EN 60079-11 : 2006 (IEC 60079-11 :2006)
Increased Safety Ex e EN 50019 : 2000 EN 60079-7 : 2003 (IEC 60079-7 :2001)
       
Oil Immersion Ex o EN 50028 : 1987 EN (IEC 60079-6 : 1995)
Encapsulation Ex m EN 50015 : 1998 EN 60079-18 :2004 (IEC 60079-18 :2004)
Pressurisation Ex p EN 50016 : 2002 EN 60079-2 : 2004 (IEC 60079-2 : 2001)
Sand / Quartz filled Ex q EN 50017 : 1998 EN (IEC 60079-5 : 1997)
       
Non-Sparking Ex nA EN 50021 : 1999 EN 60079-15 : 2005 (IEC 60079-15 : 2005)
Enclosed Break Ex nW
Energy Limitation Ex nL
Restricted Breathing Ex nR
EQUIPMENT FORM OF PROTECTION NOT RECOGNISED UNDER IEC 60079 SERIES
Simple Pressurisation Ex nP EN 50021 : 1999 No IEC Replacement Standard
Special Protection not covered by other recognised forms of protection Ex s E.H.S.R.'s of ATEX
94/9/EC Directive
No IEC Replacement Standard
Protection methods designated with 'Ex', as shown in the above tables, signifying compliance with the relevant apparatus certification standards for the given code of protection, may be approved to both European Normatives & IEC Standards.

Adoption of the "new" European standards was to be effected at National level (in each EC member country) from 2004 and the date by which most of the old standards were to be withdrawn was 1.3.2007. Implementation of the new IEC based standards means that ATEX approved equipment is now listed as Ex d or Ex e rather than EEx d or EEx e, since the introduction of the new EN 60079 series.

Consequently it is for the foreseeable future very easy to distinguish whether products comply with the latest standards or not.