ALTERNATING CURRENT GENERATORS 119 



Non-inductive normal load heat runs consist in 

 running the machine under normal load at unity power- 

 factor until constant temperatures are reached. These 

 final temperatures are then recorded and readings taken 

 of regulation with unity power-factor. 



Non-inductive overload heat runs consist in bringing 

 the machine to normal load temperatures, applying the 

 overload at unity power-factor for the specified times and 

 recording the overload temperatures. Readings for 

 regulation at unity power-factor should be taken. 



Normal load and overload power-factor heat runs are 

 made in the same way as normal and overload non- 

 inductive runs, except that the machine is operated at 

 a specified power-factor. Wattmeters should be used 

 with the voltmeter and ammeters to determine the 

 power-factor. 



