Can I estimate the leakage inductance of a power transformer taken from a catalogue?
You may be able to find "typical" L/R or X/R ratios for power transformers if you search. Also, some catalogs may state L/R. In power transformer specs, I believe it is more common to state per unit impedance and L/R ratio. When L/R ration is stated, I believe that is actually X/R at the rated frequency.