IEC 60076-5:2006

FOREWORD
1 Scope
2 Normative references
3 Requirements with regard to ability to withstand short
  circuit
  3.1 General
  3.2 Overcurrent conditions
4 Demonstration of ability to withstand short circuit
  4.1 Thermal ability to withstand short circuit
  4.2 Ability to withstand the dynamic effects of short
      circuit
Annex A (informative) Theoretical evaluation of the ability
                      to withstand the dynamic effects of
                      short circuit
Annex B (informative) Definition of similar transformer

Identifies the requirements for power transformers to sustain without damage the effects of overcurrents originated by external short circuits. Describes the calculation procedures used to demonstrate the thermal ability of a power transformer to withstand such overcurrents and both the special test and the theoretical evaluation method used to demonstrate the ability to withstand the relevant dynamic effects.