9.6.3 Derating for Ambient Temperature and Switching Frequency
NOTICE
FACTORY DERATING
Danfoss drives are already derated for operational temperature (55
°
C (131
°
F) T
AMB,MAX
and 50
°
C (122
°
F) T
AMB,AVG
).
Use the graphs in
to
to determine if the output current must be derated based on switching frequency
and ambient temperature. When referring to the graphs,
I
out
indicates the percentage of rated output current, and
fsw
indicates the switching frequency.
Enclosure
Switching
pattern
High overload HO, 150%
Normal overload NO, 110%
D1h–D8h
N90 to N250
380–500 V
60 AVM
130BX473.11
Iout [%]
fsw [kHz]
70
80
90
1
60
100
110
2
3
4
5
6
7
8
9
0
50 ˚C (122 ˚F)
55 ˚C (131 ˚F)
130BX474.11
70
80
90
1
60
100
110
2
3
4
5
6
7
8
9
0
50
Iout [%]
fsw [kHz]
45 ˚C (113 ˚F)
50 ˚C (122 ˚F)
55 ˚C (131 ˚F)
SFAVM
130BX475.11
Iout [%]
fsw [kHz]
70
80
90
60
100
110
2
4
6
0
3
1
5
45 ˚C (113 ˚F)
50 ˚C (122 ˚F)
55 ˚C (131 ˚F)
130BX476.11
Iout [%]
fsw [kHz]
70
80
90
60
100
110
2
4
6
0
50
1
3
5
40 ˚C (104 ˚F)
45 ˚C (113 ˚F)
50 ˚C (122 ˚F)
55 ˚C (131 ˚F)
E1h–E4h
N315 to N500
380–500 V
60 AVM
130BX477.11
70
80
90
1
60
100
110
2
3
4
5
6
7
0
Iout [%]
fsw [kHz]
50 ˚C (122 ˚F)
55 ˚C (131 ˚F)
130BX478.12
Iout [%]
fsw [kHz]
70
80
90
1
60
100
110
2
3
4
5
6
7
0
50
45 ˚C (113 ˚F)
50 ˚C (122 ˚F)
55 ˚C (131 ˚F)
SFAVM
130BX479.11
Iout [%]
fsw [kHz]
70
80
90
1
60
100
110
2
3
4
5
0
45 ˚C (113 ˚F)
50 ˚C (122 ˚F)
55 ˚C (131 ˚F)
130BX480.11
Iout [%]
fsw [kHz]
70
80
90
1
60
100
110
2
3
4
5
0
50
40 ˚C (104 ˚F)
45 ˚C (113 ˚F)
50 ˚C (122 ˚F)
55 ˚C (131 ˚F)
Table 9.4 Derating Tables for Drives Rated 380–500 V
Mechanical Installation Con...
VLT® AutomationDrive FC 302
142
Danfoss A/S © 01/2018 All rights reserved.
MG38C202
9
9
