ICS 29.160                          ETD 15

(Superseding IS 14222 : 1995)

NATIONAL FOREWORD

This Indian Standard (Part 15) which is identical with IEC 60034-15 : 2009 ‘Rotating electrical machines — Part 15: Impulse voltage withstand levels of form-wound stator coils for rotating ac machines’ issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on the recommendation of the Rotating Machinery Sectional Committee and approval of the Electrotechnical Division Council.

This standard supersedes IS 14222 : 1995 ‘Impulse voltage withstand levels of rotating ac machines with form-wound stator coils’. After publication of this standard, it shall be treated as withdrawn. The text of IEC Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminology 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.