Transformer Impedances 1

[kashew]

Can someone tell me if there is a reference that provides typical distribution transformer impedances? I'm looking for %Z and either X/R ratios or %X and %R values.

The X/R table in IEEE Red Book is not adequate.

 

[wbd]

In the Westinghouse Distribution Systems book, there is a table of typical impedances of distribution transformers of standardized design. It has %Z & %R.

In Beeman's book, "Industrial Power Systems Handbook", there is a table of approximate resistance, reactance, and impedance of single phase distribution transformers. This has %R, %X,& %Z.

Also, I don't have it handy but the ANSI standard on transformers may have some tables in it. I believe it is ANSI C37.010.