156 



ARMATURE CONSTRUCTION 



Fig. 189. It is a six-pole, two-circuit, triply re-entrant sextuplex 

 winding. 



n=6 m=6 



In order that ^it shall be triply re-entrant, it is necessary that 



i 



FIG. 189. Six-pole, Two-circuit, Triply Re-entrant Sextuplex Winding. 



the greatest common factor of m and y shall be 3. Therefore y 

 is taken equal to 9, 



=6x92x6 

 = 42 or 66. 



Sixty-six conductors have been taken. The three independent 

 circuits are shown respectively in black, red and blue. In the 

 following table is shown a system of symbols for use in repre- 

 senting multiplex windings. The symbols indicate the degree of 



