( 1IA1TKK X 



POBCED-COOLED I K ANSI ORMERS 



\YIIH tin- progress "i tin introduction of electrical methods, 

 tli. i JIJI.-M 'ities required of individual transformers rapidly 



*9. Diagram ho\vii t" an air-l.i mrr. 



, and inaiiuf';i.'t in. ]> , \]M i inicrd diHi-ulti-s in the 



tii. temperature rise. Ultimately iln-\ 



turn. ,1 tli. j,- Attention t.. nn tli.MU of f.-ivrd r.M.liiiLf. and ti 



