calculating voltage drop in distribution transformer
calculating voltage drop in distribution transformer
(OP)
hi,
I would like to know how could calculate the voltage drop in a distribution transformer based on the data mentioned on the name plate and the drawn current.
Best regards.
I would like to know how could calculate the voltage drop in a distribution transformer based on the data mentioned on the name plate and the drawn current.
Best regards.





RE: calculating voltage drop in distribution transformer
RE: calculating voltage drop in distribution transformer
You do not need an exact calculation of transformer voltage drop anyways because your upstream and downstream wiring needs to have reasonable voltage drop corresponding to reasonable efficiency.
RE: calculating voltage drop in distribution transformer
RE: calculating voltage drop in distribution transformer
RE: calculating voltage drop in distribution transformer
I and Z must include the angles. The magnitude of I in pu is the load kVA in pu divided by the rated kVA. The angle of I is -acos(pf) (assuming a lagging pf, angle is + if the pf is leading). The angle of Z is atan(X/R).
The voltage drop in pu is the magnitude of the high side voltage in pu minus 1.