MT 60079-0 - TC 31/MT 60079-0

Specifies the general requirements for construction, testing and marking of electrical apparatus and Ex components intended for use in explosive gas atmospheres. Electrical apparatus complying with this standard is intended for use in hazardous areas in which explosive gas atmospheres, caused by mixtures of air and gases, vapours or mists, exist under normal atmospheric conditions. The significant changes with respect to the previous edition are: Requirements for explosive dust atmospheres transferred from IEC 61241-0, The marking Group "II" alone has been replaced by "IIA", "IIB", or "IIC" as many of the enclosure requirements are now aligned with a specific sub-group, Dust groups defined as Group IIIA, IIIB and IIIC, Remainder of "electrostatic" requirements transferred from IEC 60079-26 and Equipment protection levels (EPL) introduced.
The contents of the interpretation sheets of November 2008 and April 2019, and the corrigendum of December 2010 have been included in this copy.

Contains specific requirements for the construction, testing and marking of electrical equipment, parts of electrical equipment and Ex components in the type of protection powder filling "q", intended for use in explosive gas atmospheres. The significant changes with respect to the previous edition are: all requirements for third-party certification removed; requirements for external connections added; all requirements for cable glands deleted as they have been transferred to 60079-0; specific requirements for cells and batteries introduced; added relaxation requirements on required faults for fuse-protected equipment and added requirements for instructions.

This part of IEC 60079 specifies the requirements for the construction and testing of oil-immersed electrical equipment, oil-immersed parts of electrical equipment and Ex components in the type of protection oil immersion "o", intended for use in explosive gas atmospheres. The significant changes with respect to the previous edition are: all requirements for third-party certification removed; added requirements for external connections; collected all marking requirements in the marking clause, and added requirements for instructions.

Specifies the general requirements for construction, testing and marking of electrical apparatus and Ex components intended for use in explosive gas atmospheres. Electrical apparatus complying with this standard is intended for use in hazardous areas in which explosive gas atmospheres, caused by mixtures of air and gases, vapours or mists, exist under normal atmospheric conditions.