IS/IEC 60079 : Part 11 : 2023 Explosive Atmospheres - Part 11 Equipment Protection by Intrinsic Safety “i”
NATIONAL FOREWORD
This Indian Standard (Part 11) (Second Revision) which is identical to IEC 60079-11 : 2023 'Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"' issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on the recommendation of the Electrical Apparatus for Explosive Atmosphere Sectional Committee and approval of the Electrotechnical Division Council.
This standard was first published in 2008 as IS/IEC 60079-11 : 2006 'Explosive atmospheres: Part 11 Equipment protection by Intrinsic safety "i"' and was revised in 2020. This second revision has been brought to align it with latest version of IEC 60079-11 : 2023.
The text of IEC standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminologies and conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:
a) Wherever the words 'International Standard' appear referring to this standard, they should be read as 'Indian Standard'; and
b) Comma (,) has been used as a decimal marker, while in Indian Standards the current practice is to use a point (.) as the decimal marker.