This part of IEC60034 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. It is applicable to DC and three-phase AC machines, with shaft heights 56mm and higher and a rated output up to 50MW, at operational speeds from 120min -1 up to and including 15000min -1 . This document is not applicable to machines mounted in situ (on site), three-phase commutator motors, single-phase machines, three-phase machines operated on single-phase systems, vertical waterpower generators, turbine generators greater than 20MW and machines with magnetic bearings or series-wound machines. NOTE For machines measured in situ, refer to applicable parts of ISO20816 , ISO10816 and ISO7919 .