Chapter 9 Specification C2000 Plus 
 
9-22 
9-8 Efficiency Curve 
 Models: 
VFD007~370C23A-xx 
VFD007~750C4xx-xx 
  Figure 9-12 
Efficiency (%) under different loads: 
 Speed (%) 
Load (%) 
16.7 50 66.7 100 
100% Load 90.6 96.2 97.0 97.8 
75% Load 90.4 96.1 96.9 97.8 
50% Load 89.5 95.7 96.6 97.6 
25% Load 82.5 92.3 93.8 95.5 
Table 9-25    
 Models: 
VFD450~900C23A-xx 
VFD900~5600C4xx-xx 
  Figure 9-13 
Efficiency (%) under different loads: 
   Speed (%) 
Load (%) 
16.7 50 66.7 100 
100% Load 93.4 97.3 97.8 98.3 
75% Load 93.4 97.3 97.8 98.3 
50% Load 92.6 97.1 97.7 98.2 
25% Load 90.1 92.6 93.2 93.2 
Table 9-26    
 
VFD007~370C23A-xx 
VFD007~750C4xx-xx 
VFD450~900C23A-xx 
VFD900~5600C4xx-xx