214 



A RMA TURK CONSTR UGTION 



The two ranges are distinguished by drawing their respec- 

 tive coils broad and narrow, as shown. The winding is repre- 



FIG. 248. Dick, Kerr & Co. Alternator. Three-phase, Half-coiled, Double-coil, 

 Two-slot Spiral Winding in two ranges. 



FIG. 249. Allmanna Svenska Elektriska Aktiebolaget. Three-phase, Half-coiled, 

 Double-coil, Two-slot Spiral Winding in two ranges. 



sented in a developed form which is equivalent to rolling the 

 surface of the armature out on the paper. This type. of diagram 

 is more useful for very large armatures which have a r great 



