AS/NZS 60079.18:2016

Adopts IEC 60079-18 to establish the specific requirements for construction, testing and marking of electrical equipment, parts of electrical equipment and Ex components with the type of protection encapsulation ‘m’ intended for use explosive gas atmospheres or explosive dust atmospheres.

This part of IEC 60079 gives the specific requirements for the construction, testing and marking of electrical equipment, parts of electrical equipment and Ex components with the type of protection encapsulation “m” intended for use in explosive gas atmospheres or explosive dust atmospheres.This part applies only for encapsulated electrical equipment, encapsulated parts of electrical equipment and encapsulated Ex components (hereinafter always referred to as “m”equipment) where the rated voltage does not exceed 11 kV.The application of electrical equipment in atmospheres, which may contain explosive gas aswell as combustible dust simultaneously, may require additional protective measures.This standard does not apply to dusts of explosives, which do not require atmospheric oxygen for combustion, or to pyrophoric substances.This standard does not take account of any risk due to an emission of flammable or toxic gas from the dust.This standard supplements and modifies the general requirements of IEC 60079-0. Where arequirement of this standard conflicts with a requirement of IEC 60079-0, the requirement ofthis standard takes precedence.

Originated in Australia as AS 2431-1981.
Previous edition AS/NZS 60079.18:2011.
Third edition 2016.
Reissued incorporating Amendment No. 1 (April 2020).