Enables the performance of a machine to be confirmed by tests and to provide a basis for assessment of its suitability for a specified duty and for a comparison with other machines. Applies to traction motors, engine driven main generators, main motor-generator sets, auxiliary motors, auxiliary generators, auxiliary motor-generator sets and auxiliary rotary convertors. This consolidated version consists of the first edition (1999) and its amendment 1 (2002). Therefore, no need to order amendment in addition to this publication.