106 THE DESIGN OF STATIC TRANSFORMERS 



the drop in volts from no load to full load constitutes of the 

 secondary pressure at full load, but rather the percentage which 

 it hears to the secondary pressure at no load, the primary 

 pressure being assumed to be maintained constant as the load 

 increases. Nevertheless, since the author originally worked 



FIG. 66. Regulation diagram of 20-kva 5000/200-volt 50-cycle 

 single-phase transformer. 



out the diagrams in the former way, it has been to him a 

 matter of interest to preserve them unchanged, and it is not 

 apparent that the principles involved are thereby rendered any 

 less clear. 



Returning to the case of our 20-kva transformer, we have 

 seen on p. 100 that the reactance drop is 87,6 volts and the 



