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Specifications
6.12.2 Derating for Ambient Temperature
The ambient temperature (T
AMB,MAX
and must be at least 5 °C (41 °F) lower.
At 41.7 °C (107°F) , 100% of the rated output current is available. At 45 °C (113 °C ) (T
output current is available.
NOTICE
FACTORY DERATING
®
Parallel Drive Modules is already derated for operational temperature (55 °C (131 °F) T
The VLT
(122 °F) T
).
AMB,AVG
6.12.3 Derating for Switching Frequency
Graphs are presented individually for 60° AVM and SFAVM. 60° AVM only switches 2/3 of the time, whereas SFAVM switches
throughout the whole period. The maximum switching frequency is 16 kHz for 60° AVM and 10 kHz for SFAVM.
Voltage
Switching
range
pattern
60 AVM
110
100
90
80
70
60
0
380–500 V
SFAVM
110
100
90
80
70
60
0
Table 6.16 Derating for Switching Frequency, 250 kW at 400 V AC (350 hp at 460 V AC)
MG37N102
Design Guide
) is the maximum temperature allowed. The average (T
High overload HO, 150%
1
2
3
4
5
6
7
8
45
50
55
1
2
3
4
5
Danfoss A/S © 6/2016 All rights reserved.
AMB
Normal overload NO, 110%
110
100
90
80
70
o
50 C
60
o
55 C
50
0
1
2
9
110
100
90
80
70
o
C
60
o
C
o
C
50
6
0
1
) is measured over 24 hours
AMB,AVG
, MAX-3.3 K), 91% of the rated
and 50 °C
AMB,MAX
o
45 C
o
50 C
o
55 C
3
4
5
6
7
8
9
o
40 C
o
45 C
o
50 C
o
55 C
2
3
4
5
6
6
6
59
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