EN 60034-2:1996/A2:1996

FOREWORD
PREFACE
SECTION ONE - GENERAL
1 Scope
2 Object
3 General
   3.1 List of symbols
4 Definitions
   4.1 Efficiency
   4.2 Total loss
   4.3 Breaking test
   4.4 Calibrated driving machine test
   4.5 Mechanical back-to-back test
   4.6 Electrical back-to-back test
   4.7 Retardation test
   4.8 Calorimetric test
   4.9 No-load test
   4.10 Open-circuit test
   4.11 Sustained short-circuit test
   4.12 Zero power factor-test
5 Reference temperature
SECTION TWO - D.C. MACHINES
6 Losses to be included
   6.1 Excitation circuit losses
   6.2 Constant losses
   6.3 Load losses
   6.4 Additional load losses
7 Determination of efficiency
   7.1 Summation of losses
   7.2 Total loss measurement
SECTION THREE - POLYPHASE INDUCTION MACHINES
8 Losses to be included
   8.1 Constant losses
   8.2 Load losses
   8.3 Additional load losses
9 Determination of efficiency
   9.1 Summation of losses
   9.2 Total loss measurement
SECTION FOUR - SYNCHRONOUS MACHINES
10 Losses to be included
   10.1 Constant losses
   10.2 Load losses
   10.3 Excitation circuit losses
   10.4 Additional load losses
11 Determination of efficiency
   11.1 Summation of losses
   11.2 Total loss measurement
SECTION FIVE - METHODS OF TEST
12 General
13 Calibrated machine test
14 Zero power factor test
15 Retardation method
16 Electrical back-to-back test
17 Calorimetric test
18 Schedule of preferred tests
   18.1 D. C. machines
   18.2 Polyphase induction machines
   18.3 Synchronous machines
Annex A (informative) - Provisional methods for determining losses
                        and efficiency of converter-fed cage induction
                        machines
Figures

Applicable to d.c. machines and to a.c. synchronous and induction machines of all sizes within the scope of IEC Publication 34-1. Also applies to other types of machines such as rotary a.c. commutators, convertor motors and single-phase induction motors, that other methods of determining losses are used generally.