The IECEx Scheme is a voluntary certification scheme, which facilitates global trade with equipment and maintenance of equipment intended to be used in explosive atmospheres.
The IECEx Scheme is managed by the standardization organization IEC and is based on global acceptance of test reports between the member states of the scheme.
Certification is based on requirements in specific international IEC standards for explosion protected equipment.
In order to obtain an IECEx Certificate (Certificate of Conformity - CoC) a type examination of the product is required (Test Report - ExTR) as well as a quality system assessment (Quality Assessment Report - QAR).
Types of protection and standards
Examples of different types of explosion protection for electrical equipment:
|Ex d - flameproof enclosure
|Ex p - pressurisation
|Ex q – powder filling
|Ex o – oil immersion
|Ex e – increased safety
|Ex ia/ib – intrinsic safety
|Ex n – non-incendive
|Ex m – encapsulation
|Enclosure protection "tD" (combustible dust)
|Overpressure "pD" (combustible dust)
|Encapsulation "mD" (combustible dust)
The standards are used together with a general part IEC 60079-0, except for the IEC 61241-standards, which are used together with IEC 61241-0.