IS/IEC 60309-1 : 2021 Plugs, Fixed or Portable Socket-Outlets and Appliance Inlets for Industrial Purposes - Part 1 General Requirements
NATIONAL FOREWORD
This Indian Standard (Part-1) (Second Revision) which is identical with IEC 60309-1 : 2021 'Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes - Part 1: General requirements' issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on the recommendation of the Electrical Wiring Accessories Sectional Committee and approval of the Electrotechnical Division Council.
This standard was published in 1966 and subsequently revised in year 2002 to bring it in line with latest IEC 60309-1 to make pace with the latest developments that have taken place at international level.
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.