IEEE C50.13-2005 - IEEE Standard for Cylindrical-Rotor 50 Hz and 60 Hz Synchronous Generators Rated 10 MVA and Above. Abstract: The requirements in this standard are applied to 50 Hz and 60 Hz, two-pole and fourpole, cylindrical-rotor synchronous generators driven by steam turbines and/or by combustion gas turbines. The drive may be direct or through a gearbox or other device...