Table of Contents

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Machine terminal voltages arising from converter
   operation
5 Electrical stresses in the insulation system of
   machine windings
6 Voltage rating for Type II insulation systems
7 Stress factors for converter-fed Type II insulation
   systems
8 Qualification tests
9 Qualification of mainwall insulation system
10 Qualification of turn insulation
11 Qualification of the stress control system
12 Preparation of test objects
13 Qualification test procedures
14 Qualification test pass criteria
15 Routine test
16 Optional screening tests
17 Analysis, reporting and classification
Annex A (informative) - Contributions to ageing of
        the mainwall insulation
Annex B (informative) - Examples of circuits for
        impulse testing
Annex C (informative) - Derivation of the short
        term endurance test voltage
Annex D (informative) - Derivation of the impulse
        voltage insulation class for the machine
        insulation
Annex E (normative) - Derivation of an IVIC in
        the absence of a manufacturer's reference
        life line
Annex F (informative) - Optional screening tests
Bibliography

Abstract

Specifies criteria for assessing the insulation system of stator/rotor windings of single or polyphase AC machines which are subjected to repetitive impulse voltages, such as those generated by pulse width modulation (PWM) converters, and are expected to experience and withstand partial discharge activity during service.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	TC 2
Supersedes	IEC TS 60034-18-42 : 1.0