| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 4<\/td>\n | European foreword Endorsement notice <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | Blank Page <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 4 Machine terminal voltages arising from converter operation <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Figures Figure 1 \u2013 Voltage impulse waveshape parameters Tables Table 1 \u2013 Examples of the measured values of characteristics of the terminal voltages for two converter-fed machines <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Figure 2 \u2013 Waveform representing one complete cycle of the phase to phase voltage at the terminals of a machine fed from a 3-level converter Figure 3 \u2013 Jump voltage (Uj or Uj max) at the terminals of a machine fed from a converter drive <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 5 Electrical stresses in the insulation system of machine windings 5.1 General Figure 4 \u2013 Maximum voltage enhancement at the machine terminals at infinite impedance as a function of cable length for various impulse rise times <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 5.2 Voltages stressing the phase to phase insulation 5.3 Voltages stressing the phase to ground insulation 5.4 Voltages stressing the turn to turn insulation 5.4.1 General Figure 5 \u2013 Example of a random-wound design Figure 6 \u2013 Example of a form-wound design <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 5.4.2 Random-wound windings 5.4.3 Form-wound windings 6 Voltage rating for Type II insulation systems Figure 7 \u2013 Worst case voltage stressing the turn to turn insulation in a variety of random-wound stators as a function of the rise time of the impulse <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 7 Stress factors for converter-fed Type II insulation systems <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Table 2 \u2013 Influence of features of the converter drive voltage on acceleration of ageing of components of Type II insulation systems <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 8 Qualification tests 8.1 General 8.2 Qualification tests <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 9 Qualification of mainwall insulation system 9.1 General 9.2 Test methods <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 9.3 Use of 50 Hz or 60 Hz life data to predict the service life with a converter drive <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 10 Qualification of turn insulation 10.1 General Figure 8 \u2013 Example of a life curve for a Type II mainwall insulation system <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 10.2 Test methods <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 11 Qualification of the stress control system 11.1 General Figure 9 \u2013 Example of a life curve for turn insulation <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 11.2 Test methods <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | 12 Preparation of test objects 12.1 General 12.2 Mainwall specimens 12.3 Turn to turn specimens 12.4 Stress control specimens 13 Qualification test procedures 13.1 General <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | 13.2 Mainwall insulation 13.3 Turn to turn insulation 13.4 Stress control system <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | 14 Qualification test pass criteria 14.1 Mainwall insulation 14.2 Turn to turn insulation 14.3 Stress control system <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | 15 Routine test 16 Optional screening tests 17 Analysis, reporting and classification <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | Annexes Annex A (informative) Contributions to ageing of the mainwall insulation A.1 Life time consumption of the mainwall insulation A.2 Calculation of the contributions to ageing from a 3-level converter drive Figure A.1 \u2013 Representation of the phase to ground voltage at the terminals of a machine fed from a 3-level converter <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | A.3 Calculation to derive an equivalent voltage amplitude and frequency Table A.1 \u2013 Contribution to electrical ageing by 1 kHz impulses from a 3-level converter as a percentage of the ageing from the 50 Hz fundamental voltage (endurance coefficient of 10) <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | Figure A.2 \u2013 Ratio of the life time consumption (y-axis) of impulse voltage (Upk\/pk) to fundamental voltage (U\u2019pk\/pk) expressed as a percentage for various impulse\/fundamental frequency ratios (n=10) <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | Annex B (informative) Examples of circuits for impulse testing B.1 Impulse test circuit using a semiconducting switch B.2 Typical waveform generated from the impulse generator Figure B.1 \u2013 Example of a simple converter voltage simulation circuit <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | B.3 Alternative impulse test circuit using a semiconducting switch Figure B.2 \u2013 Typical waveform generated from the impulse generator <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | Figure B.3 \u2013 Example of a simple converter voltage simulation circuit Figure B.4 \u2013 Typical waveform generated from the impulse generator <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | Annex C (informative) Derivation of the short term endurance test voltage <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | Annex D (informative) Derivation of the impulse voltage insulation classfor the machine insulation <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | Table D.1 \u2013 IVIC- and test voltage factor definition for Type II insulation systems <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | Table D.2 \u2013 Impulse voltage insulation classes (IVIC) <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | Annex E (normative) Derivation of an IVIC in the absence of a manufacturer\u2019s reference life line E.1 Derivation of an IVIC from endurance tests E.1.1 Mainwall insulation Figure E.1 \u2013 Reference life line for mainwall insulation <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | E.1.2 Turn insulation E.1.3 Stress control system E.2 Derivation of the IVIC X on the basis of satisfactory service experience E.3 Derivation of an IVIC S on the basis of satisfactory service experience <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | Annex F (informative) Optional screening tests F.1 General F.2 Short term endurance test on the mainwall insulation <\/td>\n<\/tr>\n | ||||||
| 49<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Rotating electrical machines – Partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters. Qualification tests<\/b><\/p>\n |