IEC 60034-29:2008

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Symbols and units
4 General test requirements
5 Superposition method
  5.1 Basic principles
      5.1.1 General
      5.1.2 Temperature rise
      5.1.3 Estimation of temperature rise from reduced load tests
  5.2 Induction motors
      5.2.1 Applicable tests
      5.2.2 Method of reduced voltage and rated current
      5.2.3 Method of rated voltage and reduced current
      5.2.4 Method combining tests at reduced voltage and reduced
            current
  5.3 Synchronous machines
      5.3.1 Method of open circuit, short circuit, zero excitation
      5.3.2 Method of zero power factor and open circuit loading
  5.4 DC machines
6 Equivalent load method
  6.1 Principles
      6.1.1 General
      6.1.2 Temperature rise
  6.2 Induction motors
      6.2.1 Forward short-circuit test
      6.2.2 Modulated frequency method
      6.2.3 DC injection
      6.2.4 Mixed-frequency or bi-frequency method
  6.3 Synchronous machines - Zero power factor
7 Preferred methods
Annex A (informative) Example calculation

IEC 60034-29 provides various indirect load tests, the purpose of which is to determine the temperature rise of rotating electrical machines, including a.c. induction machines, a.c. synchronous machines and d.c. machines. The test methods in some cases provide, in addition, means of measuring or estimating other parameters such as losses and vibration. Applies to machines covered by IEC 60034-1 when they cannot be loaded to a specific condition. Is applicable to both motors and generators.