Lust CDA3000 - Calculation of Effective Inverter Capacity Utilization

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Engineering Guide CDA3000
3 Selection of inverter module
3.2.15Calculation of
effective
inverter capac-
ity utilization
The CDA3000 inverter modules have an overload capability of typically
1.8 x I
N
for 30 s (1.5 x I
N
for 60 s).
Calculation of effective inverter capacity utilization
Figure 3.27 Effective inverter capacity utilization
The inverter module is defined by I
eff
< I
N-Inverter
. The condition
[I
Load
2
-I
N Inverter
2
] x t
Overload
< 75A
2
s must additionally be met,
otherwise the inverter module will shut down due to overload.
For ease of effective value calculation we recommend the LUDRIVE drive
dimensioning program.
V
m/s
0.5
1.0
1.5
1.8
I
A
t
1
t
2
t
3
T
I
1
I
2
I
1
I
3
t
I
eff
I
2
1
t
1
I
2
2
t
2
I
2
2
t
3
⋅+⋅+⋅
T
----------------------------------------------------------=