Benchmark Alpha E-Tec Plus 28 - Page 9

Pump electrical consumption (W)
0
10
20
30
40
50
60
70
Flow rate (l/h)
200 600 1000 1400800 1200 16004000
0
1
2
3
4
5
6
7
Head (m water)
Alpha E-Tec Plus 28, 33 and 38 - Technical Data
Fig. 3.3
3.5.3 E-Tec Plus 38 Available Pump Head and Power Consumption
A+B = Head available with by-pass closed
B = Head available with by-pass open
C+D = Power consumed by the pump with by-pass open (dotted area)
D = Power consumed by the pump with by-pass closed (dotted area)
Speed 9
Speed 9
Speed 5
C
D
B
A
9