Transformer Ratings, i.e. AA/AA/FA and Fault Current

[NS_EE06]

Thanks for all of the information. I'm seeing the trend and this board will be a valuable tool in the future.

Thanks again!

 

[dkarst]

Think this has been adequately flattened by previous posters but for example Matsch "Electromagnetic and Electromechanical Machines" transformer impedance table reprints a 1950 table from Westinghouse that states:

"The impedances are expressed in percent on the self-cooled rating of the OA/FA and OA/FA/FOA."