446 



ELEMENTS OF ELECTRICAL ENGINEERING. 



winding gives a winding having 2m balanced paths and having 

 only i/mth as many commutator bars as the original ;/z-plex 

 winding. 



Consider a singly reentrant 7^-plex multipolar wave winding 

 (Fig. 60 shows a singly reentrant duplex six-pole wave winding). 

 In such a winding a commutator segment is of course inserted at 

 the terminus of each winding element. Suppose, however, that, 

 starting from a given commutator segment, m of these winding 

 elements are wound as one extended winding element before a 



Fig. 62. 



