Specifies the factory acceptance vibration test procedures and vibration limits for certain electrical machines under specified conditions, when uncoupled from any load or prime mover. Is applicable to d.c. and three-phase a.c. machines, with shaft heights 56 mm and higher and a rated output up to 50 MW, at operational speeds up to 15 000 per minute. This consolidated version consists of the third edition (2003) and its amendment 1 (2007). Therefore, no need to order amendment in addition to this publication.