Revised Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 1) (First Revision) which is identical with IEC 60204-1 : 2016 ‘Safety of machinery - Electrical equipment of machines - Part 1: General requirements’ issued by International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on recommendation of the Safety of Machinery - Electrotechnical Aspects Sectional Committee and approval of the Electrotechnical Division Council

This standard was originally published in 2017 which was based on IEC 60204-1 : 2008. The first revision of this standard has been undertaken to align it with the latest version of IEC 60204-1 : 2016.

The major changes in this revision are as follows:

a) Added requirements to address applications involving power drive systems (PDS);

b) Revised electromagnetic compatibility (EMC) requirements;

c) Clarified overcurrent protection requirements;

d) Requirements for determination of the short circuit current rating of the electrical equipment;

e) Revised protective bonding requirements and terminology;

f) Reorganization and revision to Clause 9, including requirements pertaining to safe torque off of PDS, emergency stop, and control circuit protection;

g) Revised symbols for actuators of control devices;

h) Revised technical documentation requirements; and

j) General updating to current special national conditions, normative standards, and bibliographical references.

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’.

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.