EN 60034-18-42:2017

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 manufacturers reference life line
Annex F (informative) - Optional screening tests
Bibliography
Annex ZA (normative) - Normative references to
         international publications with their
         corresponding European publications

IEC/TS 60034-18-42:2008 defines 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 pulse width modulation converters, and expected to withstand partial discharge activity during service. It specifies electrical qualification and acceptance tests on representative samples which verify fitness for operation with voltage-source converters.