Danfoss VLT AAF00x, Инструкция по эксплуатации, Страница: 107 / 117

AAF005A190T4E
21H2GCxx
AAF005A250T4E
21H2GCxx
AAF005A310T4
E21H2GCxx
AAF005A400T4E
21H2GCxx
Total Current [A] 190 250 310 400
Losses Watt [kW] 5 7 9 11
Needed Airflow M 3 /h 765 1230 1230 1230
Frame
D E E F
Nominal Reactive [A] 190 250 310 400
Nominal Harmonic [A] 170 225 280 360
Max individual harmonic
compensation in back channel
I
5
[A]
119 158 196 252
Nominal/
I
7
85 113 140 180
(maximum)
Note: Numbers are rounded to
nearest amp
I
11
54 72 90 115
I
13
48 63 78 101
I
17
34 45 56 72
I
19
31 41 50 65
I
23
27 36 45 58
I
25
24 32 39 50
8.1.2 Derating for Low Air Pressure
The cooling capability of air is decreased at a lower air
pressure.
Below 3,280 ft [1,000 m] altitude no derating is necessary
but above 3,280 ft [1,000 m] the ambient temperature
(T
AMB
) or max. output current (I
out
) should be derated in
accordance with the diagram shown.
An alternative is to lower the ambient temperature at high
altitudes and thereby ensure 100% output current at high
altitudes. As an example of how to read the graph, the
situation at 6,600 ft [2 km] is elaborated. At a temperature
of 113°F [45
°
C] (T
AMB, MAX
- 3.3 K), 91% of the rated output
current is available. At a temperature of 107°F [41.7
°
C],
100% of the rated output current is available.
80
0 500
100
95
90
85
1000 1500 2000 2500 3000
Altitude (meters above sea level)*
130BB008.10
I
OUT
(%)
0 500 1000 1500 2000 2500 3000
Altitude (meters above sea level)*
30
35
40
45
(°C)
A
mb
. T
emp
.
130BB009.10
HO
NO
Derating of output current versus altitude at T
AMB, MAX
for frame sizes D, E and F.
General Specifications VLT Active Filter AAF 00x
8-4 MG.90.V2.22 - VLT
®
is a registered Danfoss trademark
8 8