The document discusses generators customized for gas and steam turbines. It describes different cooling systems for 2 pole generators including totally enclosed water-to-air cooling, closed air-to-air cooling, and direct air cooling. Technical specifications are provided for frequency, power factor, and efficiency for 50Hz and 60Hz generators. Generators with water-cooled stators and hydrogen-cooled rotors are described as optimal for high output applications up to 1270 MVA in large steam power plants.