IS 17123 : Part 2 : 2025/IEC 61800-2 : 2021 Adjustable Speed Electrical Power Drive Systems - Part 2 General Requirements - Rating Specifications for Adjustable Speed a.c. Power Drive Systems

ICS 29.160.30; 29.200

ETD 31

[Superseding IS/IEC 61800 (Part 2) : 2015, IS/IEC 61800 (Part 4): 2002]

NATIONAL FOREWORD

This Indian Standard (Part 2) which is identical to IEC 61800-2 : 2021 'Adjustable speed electrical power drive systems - Part 2: General requirements - Rating specifications for adjustable speed AC power drive systems' issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on the recommendation of the Power Electronics Sectional Committee and approval of the Electrotechnical Division Council.

IS/IEC 61800 (Part 2) was first published in 2015. This standard has been brought out to align it with the latest version of IEC 61800-2: 2021. This standard supersedes IS/IEC 61800 (Part 2): 2015 and IS/IEC 61800 (Part 4): 2002.

This standard is published in various parts. Other parts in this series are:

Part 1 General requirements - Rating specifications for low-voltage adjustable speed d.c. power drive systems

Part 6 Guide for determination of types of load duty and corresponding current ratings

The text of the IEC Standard has been proposed 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' appears 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.