This part of IEC 60079 specifies the requirements for the construction and testing of oilimmersed
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.
NOTE Type of protection oil immersion “o” provides equipment protection level (EPL) Gb. For further information,
see Annex A.
This standard supplements and modifies the general requirements of IEC 60079-0. Where a
requirement of this standard conflicts with a requirement of IEC 60079-0, the requirement of
this standard takes precedence.
This standard is applicable to electrical equipment, parts of electrical equipment, and Ex
components which, in the absence of oil immersion, are not ignition capable in normal
operation as determined by IEC 60079-15 or IEC 60079-11.