IS/IEC/TS 60034 : Part 27 : Sec 5 : 2021 Rotating Electrical Machines - Part 27 Winding Insulation of Rotating Electrical Machines - Section 5 Off-Line Measurement of Partial Discharge Inception Voltage Under Repetitive Impulse Voltage

ICS 29.160.01

ETD 15

NATIONAL FOREWORD

This Indian Standard (Part 27/Sec 5) which is identical to IEC TS 60034-27-5 : 2021 'Rotating electrical machines Part 27-5: Off-line measurement of partial discharge inception voltage on winding insulation under repetitive impulse voltage' 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 is published in various parts. Other parts in this series are:

Part 1 Rating and performance

Part 2 Determining losses and efficiency from tests

Sec 1 Standard methods (excluding machines for traction vehicles)

Part 5 Degrees of protection provided by the integral design of rotating electrical machines IP code - Classification

Part 8 Terminal markings and direction of rotation

Part 18 Partial discharge free electrical insulation systems Type I used in rotating electrical machines fed from voltage converters

Sec 41 Qualification and quality control tests

Part 18 Partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters

Sec 42 Qualification tests

Part 27 Winding insulation of rotating electrical machines

Sec 4 Measurement of insulation resistance and polarization index

The text of the IEC standard has been approved as suitable for publication as an Indian Standard without deviations. Certain 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'; 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.