Te chni cal dat a
User instructions. DGM speed regulator
156
Fig. 45: Power derating of the maximum input voltage based on
the installation altitude
8.2.3
Power derating based on the switching frequency
The following illustration shows the output current in function of the switching frequency. To limit
heat losses in the speed regulator, the output current must be reduced.
Note: The pulse frequency is not reduced automatically!
The maximum output values can be determined based on the following characteristic curve.
Fig. 46: Power derating of the maximum output current based on
of the switching frequency
40%
50%
60%
70%
80%
90%
100%
110%
0
500
1000
1500
2000
2500
3000
3500
4000
Höhe über NN [m]
m
a
x
.
E
ing
a
ng
s
s
pa
nn
un
g
[%
]
20%
30%
40%
50%
60%
70%
80%
90%
100%
110%
120%
2
4
6
8
10
12
14
16
Taktfrequenz [kHz]
m
a
x
.
A
us
ga
ng
s
s
tr
om
[
%
]
M
a
x
im
u
m
i
n
p
u
t
v
o
lt
a
g
e
[
%
]
Altitude [masl]
M
a
x
im
u
m
o
u
tp
u
t c
u
rr
e
n
t [
%
]
Pulse frequency [kHz]
