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Transformer Equivalent Circuit Questions 
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#1
Nov808, 07:56 PM

P: 5

Hi. Why does one conduct an opencircuit and a shortcircuit test on a transformer to determine its equivalent circuit parameters? I've read that a) the opencircuit test determines the parallel parameters  the R and X equating to the core loss, and b) the shortcircuit test determines the series parameters  the R and X equating to the winding loss and leakage flux.
I've done this experiment in the lab, and have all the relevant raw data. I'm just looking for some understanding in why certain parameters can be ignored in the opencircuit case and must be considered in the shotycircuit case, and vice versa. Cheers. 


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