Derating For Temperature - Danfoss VLT FC 302 Operating Instructions Manual

Specifications

11.1.2 Derating for Temperature

The frequency converter automatically derates the
switching frequency, switching type, or output current
under certain load or ambient conditions as described
below. The derating curves in Illustration 11.1 and
Illustration 11.2 apply to both SFAVM and 60 AVM
switching modes.
110
100
90
80
70
60
0.0
Illustration 11.1 Derating Frame Sizes D, E, and F 380-500 V
(T5) High Overload 150%
11 11
142
0.5 1.0 1.5 2.0 2.5
Danfoss A/S © Rev. 2014-07-29 All rights reserved.
Operating Instructions
110
100
90
80
70
60
50
0.0
Illustration 11.2 Derating Frame Sizes D, E, and F 380-500 V
o
45 C
(T5) Normal Overload 110%
o
50 C
o
55 C
3.0 3.5 4.0
0.5 1.0 1.5 2.0 2.5
o
40 C
45 C o
o
50 C
o
55 C
3.0 3.5 4.0
MG37A202