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Derating Guidelines
123
480V AC
37
30
PowerFlex 70 Power Rating
Derating
ND HP
HD HP
480 Volt
0.5 - 7.5
0.33 - 5.0
None
10
7.5
15
10
20
15
25
20
PowerFlex 70 Power Rating
Derating
ND kW
HD kW
400 Volt
2 kHz
4 kHz
6 kHz
8 kHz
10 kHz
20
25
3
0
3
5
40
45
50
40
50
60
70
8
0
90
100
% of Rated Continuou
s
Current
Max Ambient Temp (ºC)
2 kHz
4 kHz
6 kHz
8 kHz
10 kHz
20
25
3
0
3
5
40
45
50
40
50
60
70
8
0
90
100
% of Rated Continuou
s
Current
Max Ambient Temp (ºC)
20
25
3
0
3
5
40
45
50
40
50
60
70
8
0
90
100
% of Rated Continuou
s
Current
Max Ambient Temp (ºC)
20
25
3
0
3
5
40
45
50
40
50
60
70
8
0
90
100
% of Rated Continuou
s
Current
Max Ambient Temp (ºC)
20
25
3
0
3
5
40
45
50
40
50
60
70
8
0
90
100
% of Rated Continuou
s
Current
Max Ambient Temp (ºC)