KSB PumpDrive 2 - Constant Reference Power; Energy Savings with Constant Reference Power

8 Commissioning/Shutdown
106 of 212
PumpDrive 2
time. The result of the calculation is displayed as energy saved (1-4-1-4) in kilowatt
hours. The Energy Savings Meter parameter (3-9-5-1) can be used to choose between
two calculation methods:
▪ Method with constant reference power
▪ Method with variable reference power
Constant reference power
t
(1-4-1-3)
(1-4-1-4)
(3-9-5-2)
(1-2-1-4)
P
Fig.75: Energy savings with constant reference power
P Effective power
t Time
1-2-1-4 Current input power of frequency inverter
1-4-1-3 Δ P
1-4-1-4 Energy saved
3-9-5-2 Reference power
The method with constant reference power requires specification of the power in
kW. This is the average effective power of the running pump set for operation
without a frequency inverter. The specification is made using the Fixed Reference
Power parameter (3-9-5-2).