Table of Contents

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

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	British Standards Institution
Pages
ISBN
Committee	PEL/2
Supersedes	DD CLC/TS 60034-18-42 : 2011