The requirements in this standard are applied to 50 Hz and 60 Hz, two-pole and four-pole, 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 that permits different speeds for the turbine and the generator. The generators covered by this standard are to have rated outputs of 10 MVA and above. Keywords: ac generator, combustion gas turbine-generator, cylindrical-rotor generator, IEEE C50.13, steam turbine-generator, synchronous generator, turbine generator. |