96 



ALTERNATING CURRENTS 



ate loads are applied. It should be noted that the common wire 

 'N carries a current I\/2, where 7 is the current in each of the 

 two outer wires. 



141a 



FIG. 96. Mesh-connected, 2-phase winding. 



A two-phase alternator may have a winding which consists 

 of four coils. These coils may be connected in mesh as shown in 

 Fig. 96. This corresponds to the delta-connection in a three- 



FIG. 97. Measurement of power in an insulated 2-phase, 4-wire system. 



phase system. As in the case of the delta, if these coils are prop- 

 erly connected, the winding is not short-circuited on itself. 

 The line voltages are each equal to the coil voltage. The 



