ABB ACS550 Series Manuale d'uso - Pagina 14
Sfoglia online o scarica il pdf Manuale d'uso per Controllore ABB ACS550 Series. ABB ACS550 Series 14. Drive it low voltage ac drives 150...550 hp
Anche per ABB ACS550 Series: Manuale di avvio rapido (2 pagine), Manuale di avvio rapido (2 pagine), Manuale di supplemento all'installazione (16 pagine)
Stampa la pagina
Unit Conversions
Hydraulic control,
Qi
Hsi
. 9
Phyi
p
m
nhi
nhi
. 0
98
Qi
1
The rated efficiency of hydraulic coupling is assumed to be 98%.
The required power for the compared control method is calculated and the
energy consumption per year is thereafter calculated from the formula
E
Tki
Pi
The formulas above use metric measurement units. In the case US units have
been selected to be used in entering the data and presenting the results, the
following conversion factors have been used:
Nominal volume flow Q
Head
Liquid Density
Nominal Power
Mass (weight)
81
, where
0
Qi
. 0
75
Hst
Hn
[gpm]* 0.22712471=[m³/h]
n:
H:
[ft]* 0.3048 =[m]
D:
[lb/ft³]* 0.016018463=[kg/dm³]
P:
[Hp]* 0.7457=[kW]
m:
[lb]*0.4536=[kg]
5 .
14