ALTERNATING-CURRENT WINDING 



231 



Fig. 270 shows a photograph of a winding corresponding to this 

 diagram. This winding is really a bar winding, but the bars are 

 themselves cranked at one end to form half of the connector, the 



FIG. 271. Three-phase, Two-slot Wave Winding (Six-phase Grouping with 

 clustered End Connections). 



other half of which consists of a piece of copper strip. If in Fig. 

 269 the red phase be reversed so that its end connectors, which 

 were at the top of the diagram, now appear at the bottom, and 



FIG. 272. Two-phase, Three-slot Wave Winding. 



vice versa, we arrive at the winding of Fig. 271. Here the end 

 connectors are clustered in groups, which, practically, is not so 

 good as the evenly distributed grouping of Fig. 269. (These two 

 cases, in fact, correspond with the coil windings of Figs. 239, n 

 and N respectively, and a comparison is instructive.) We have, 



