National Foreword
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Effects of unbalanced voltages on performance
3.1 Currents
3.2 Heating
3.3 Torques
3.4 Full-load speed
4 Derating of motor to prevent overheating
Annex A (informative) Determination of the symmetrical
components of the line-to-line voltages
U[1], U[2], U[3] of a three-phase system
Annex B (informative) Approximate determination
Annex ZA (normative) Normative references to international
publications with their corresponding
European publications