I.S. EN 60034-18-42:2017&A1:2020
Current
The latest, up-to-date edition.
Rotating electrical machines - Part 18-42: Partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters - Qualification tests
Hardcopy , PDF
English
26-10-2020
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
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
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