TURBINES 



223 



setting being changed from time to time as the general condition 

 of the load changes. In such plants the overall consumption of 

 water approximates, in a series of steps, the load curve on the 

 mover. 



The deflecting nozzle may be equipped with an automatic 



FIG. 115. Combination Needle and Deflecting Nozzle. (Pelton Water 



Wheel Company.) 



regulating device so that the governor in rejecting the load on a 

 plant first operates the deflecting means and then brings about a 

 gradual resetting of the needle and nozzle opening. 



