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Synchronous Generator Ratings

  1. Dec 1, 2013 #1
    Hey all,

    If we are given a synchronous generator with the following nameplate values 10MVA, 13.8kV, 2 pole, 60 Hz

    why is it not sufficient to go

    as we did for transformers?

    My reason for asking is because I am trying to determine the voltage regulation of a particular generator. However, if I determine the full load current using the above formula, I get an absurd result.
    Last edited: Dec 1, 2013
  2. jcsd
  3. Dec 1, 2013 #2


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    Science Advisor
    Gold Member

    Is the generator a 3 phase machine? If so, the apparent power = √3 Voltageline ⋅ Currentline.
    13.8kv is a line voltage.
  4. Dec 1, 2013 #3
    How silly of me. Honestly, this entire time my issue was that I did not divide S by three. Thanks!
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