Danfoss VLT AutomationDrive FC 361 Series Design Manual page 39

Mechanical Installation Con...
6.6.3 Derating for Ambient Temperature and Switching Frequency
NOTICE
FACTORY DERATING
Danfoss drives are already derated for operational temperature (55 °C (131 °F) T
Use the graphs in Table 6.3 to determine if the output current must be derated based on switching frequency and ambient
temperature. When referring to the graphs, I
switching frequency.
Enclosure Switching
pattern
J8–J9 60 AVM
110
380–480 V
100
90
80
70
60
0
SFAVM
110
100
90
80
70
60
0
Table 6.3 Derating Tables for Drives Rated 380–480 V
MG06K102
Design Guide
indicates the percentage of rated output current, and fsw indicates the
out
High overload HO, 150%
50 ˚C (122 ˚F)
55 ˚C (131 ˚F)
1 2 3 4 5 6 7 8
45 ˚C (113 ˚F)
50 ˚C (122 ˚F)
55 ˚C (131 ˚F)
1 2 3 4 5
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and 50 °C (122 °F) T
AMB,MAX
Normal overload NO, 110%
110
100
90
80
70
60
50
9
0 1 2 3
110
100
90
80
70
60
50
6
0 1 2
).
AMB,AVG
45 ˚C (113 ˚F)
50 ˚C (122 ˚F)
55 ˚C (131 ˚F)
4 5 6 7 8 9
40 ˚C (104 ˚F)
45 ˚C (113 ˚F)
50 ˚C (122 ˚F)
55 ˚C (131 ˚F)
3 4 5 6
37
6 6