Scope

This part of IEC 60079 specifies the general requirements for construction, testing andmarking of Ex Equipment and Ex Components intended for use in explosive atmospheres.The standard atmospheric conditions (relating to the explosion characteristics of theatmosphere) under which it may be assumed that Ex Equipment can be operated are:• temperature –20 °C to +60 °C;• pressure 80 kPa (0,8 bar) to 110 kPa (1,1 bar); and• air with normal oxygen content, typically 21 % v/v.This part of IEC 60079 and other standards supplementing this standard specify additionaltest requirements for Ex Equipment operating outside the standard temperature range, butfurther additional consideration and additional testing may be required for Ex Equipmentoperating outside the standard atmospheric pressure range and standard oxygen content.Such additional testing may be particularly relevant with respect to Types of Protection thatdepend on quenching of a flame such as ‘flameproof enclosures “d”’ (IEC 60079-1) orlimitation of energy, ‘intrinsic safety “i”’ (IEC 60079-11).

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	British Standards Institution
Pages
ISBN
Committee	EXL/31
Supersedes	BS EN 60079-0 : 2012