140 THE DESIGN OF STATIC TRANSFORMERS 



This principle should not, however, be carried to extremes, 

 since there is a limit beyond which excessive local heating 

 occurs in parts of the transformer. For the range of practical 





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propositions, such dimensions as would give rise to this 

 occurrence are, however, not likely to be approached, and the 

 principle has not yet been applied to the full extent which will 

 be attended with commercial advantage. 

 As illustrative of the above method of designing, there are 



