Transformer Testing (Short Circuit and Open Circuit)

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DarkLegion PE

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Trying to get a better grasp of how these tests are done. Am I right in the below?

Short Circuit Testing
  • Short the Low Voltage side and measure current in the High Voltage side because current is usually lower there.
  • Very small V_sc is applied and turned up until I_rated is measured
  • Can get Z% from Vsc/Vrated
  • Copper Losses
Open Circuit Testing
  • Leave the Low Voltage side open and measure on the High Voltage side
  • Current measured is the current in the core
  • Can get core resistance values from this test
  • Core losses
 
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