Gives the specific requirements for the construction, testing and marking of electrical apparatus, parts of electrical equipment and Ex components with the type of protection encapsulation "m" intended for use in explosive gas atmospheres or explosive du
2009SANS 60079-18:2009 Explosive atmospheres Part 18: Equipment protection by encapsulation "m"
2005SANS 60079-18:2005 Electrical apparatus for explosive gas atmospheres Part 18: Construction, test and marking of type of protection encapsulation "m" electrical apparatus