IS/IEC/TS 60079 : Part 39 : 2015 Explosive Atmospheres - Part 39 Intrinsically Safe Systems with Electronically Controlled Spark Duration Limitation

NATIONAL FOREWORD

This Indian Standard (Part 39) which is identical to IEC TS 60079-39 : 2015 'Explosive atmospheres - Part 39: Intrinsically safe systems with electronically controlled spark duration limitation' 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.

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.