Electrical apparatus for explosive gas atmospheres - Construction, test and marking of type of protection encapsulation "m" electrical apparatus Ingestion-build-78747 ISO 1891:1979 and ISO 4046:1978

ISO 1891:1979 and ISO 4046:1978

This European Standard includes the following cross reference:

due to the existence of several different national regulations applicable in the European Countries

This standard is not intended to apply to individuals who only have administrative authority over the personnel identified above

Methods of testing and required test results

Electrical apparatus for explosive gas atmospheres - Construction, test and marking of type of protection encapsulation "m" electrical apparatus Ingestion-build-78747 ISO 1891:1979 and ISO 4046:1978BS EN 60079 18 gives the specific requirements for the construction, testing and marking of electrical apparatus, parts of electrical apparatus and Ex components with the type of protection encapsulation 'm'. This part only applies for encapsulated electrical apparatus, encapsulated parts of electrical apparatus and encapsulated Ex components where the rated voltage does not exceed 10 kV with a relative tolerance of +10%. This standard supplements the