Derating According To Ambient Temperature And Switching Frequency - Danfoss VLT HVAC Basic Drive FC 101 Design Manual

General Specifications and ...
400 V 90 kW
600 V 10 hp [7.5 kW]
Table 8.10

8.5 Derating according to Ambient Temperature and Switching Frequency

The ambient temperature measured over 24 hours should be at least 9 °F [5 °C] lower than the max. ambient temperature.
If the adjustable frequency drive is operated at a high ambient temperature, the continuous output current should be
decreased.
8 8
I [%]
out
110%
100%
90 %
80 %
70 %
60 %
50 %
40 %
30 %
20 %
10 %
0
0 2
Figure 8.1 200 V IP20 H1 0.34–1 hp [0.25–0.75 kW]
I [%]
out
110%
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0
0 2
Figure 8.2 400 V IP20 H1 0.5–2 hp [0.37–1.5 kW]
120
Design Guide
Cable length
(ft [m])
32.8 [10]
16.4 [5]
164 [50]
16.4 [5]
164 [50]
5
10
5
10
Danfoss A/S © Rev. 2014-01-14 All rights reserved.
AC line voltage [V] Rise time [usec]
400
400
400
525
525
600
600
I [%]
out
110%
100%
90%
80%
70%
40 C
o
60%
50%
45 o C
40%
30%
50 o C
20%
10%
0
0 2
16 fsw[kHz]
Figure 8.3 200 V IP20 H2 3 hp [2.2 kW]
I [%]
out
110%
100%
90%
80%
70%
60%
o
40 C
50%
40%
45 o C
30%
50 o C
20%
10%
0
f [kHz]
sw
0
16
Figure 8.4 400 V IP20 H2 3–5 hp [2.2–4.0 kW]
V [kV] dU/dt [kV/usec]
peak
0.402 1.108
0.408 1.288
0.424 1.368
0.192 0.972
0.356 1.32
0.184 1.06
0.42 1.49
5
10
5
2 10
2.155
2.529
2.585
4.083
2.949
4.609
2.976
o
40
C
o
45 C
o
50 C
f [kHz]
sw
16
o
40 C
o C
45
o
C
50
f [kHz]
sw
16
MG18C522