Historical
IEC 60034-3 Ed. 5.0 b:2005
Rotating electrical machines - Part 3: Specific requirements for cylindrical rotor synchronous machines
Gives common requirements for all cylindrical rotor machines as well as specific requirements for air, for hydrogen or for liquid cooled cylindrical rotor synchronous machines. Gives also the precautions to be taken when using hydrogen cooled machines.
International Electrotechnical Commission [iec]