77/7: 



205 



so that the empty legs of the three are in contact. The center 

 leg formed by these three carries the sum of the three fluxes 



Fl,. 15HI (a). Principle of 3-ph:<-. ron-typc transformer. 



Fio. 194 (6). I' type 



produced by the I hivc-ph.. / / and / , A- tin- sum 



>f the three run-rut. a1 any ii tin- 



