The requirements for synchronous machines are covered by four American Standards as follows: American Standard General Requirements for Synchronous Machines. C50.10-1965 American Standard Requirements for Synchronous Motors. C50.11-1965 American Standard Requirements for Salient Pole Synchronous Generators and Condensers@ C50.12-1965 American Standard Requirements for Cylindrical Rotor Synchronous Generators@ C50.13-1965 The requirements of this standard apply to all types and ratings of 60-cycle salient pole synchronous generators and condensers larger than 1 ? kva (kilovolt-amperes). All requirements and definitions@ except as specifically covered in this standard@ shall be in accordance with American Standard C50.10-1965.