Derating For Temperature - Danfoss VLT HVAC Drive FC 102 Operating Instructions Manual

Specifications
1) For type of fuse see chapter 8.4.1 Fuses.
2) American Wire Gauge.
3) Measured using 5 m screened motor cables at rated load and rated frequency.
4) The typical power loss is at nominal load conditions and expected to be within +/-15% (tolerence relates to
variety in voltage and cable conditions). Values are based on a typical motor efficiency (eff2/eff3 border line).
Motors with lower efficiency also add to the power loss in the frequency converter and opposite. If the switching
frequency is increased comed to the default setting, the power losses may rise significantly. LCP and typical control
card power consumptions are included. Further options and customer load may add up to 30 W to the losses
(though typical only 4 W extra for a fully loaded control card, or options for slot A or slot B, each).
Although measurements are made with state-of-the-art equipment, some measurement inaccuracy must be
allowed for (+/-5%).

8.1.2 Derating for Temperature

The frequency converter automatically derates the
switching frequency, switching type, or output current
under certain load or ambient conditions as described in
the following. Figure 8.1, Figure 8.2, Figure 8.3, and
8 8
Figure 8.4 show the derating curve for SFAWM and 60 AVM
switching modes.
110
100
90
80
70
60
50
0
Figure 8.1 Derating Enclosure Size D, N160 to N250 380-480 V
(T5) Normal Overload 110%, 60 AVM
110
100
90
80
70
60
50
0
Figure 8.2 Derating Enclosure Size D, N160 to N250 380-480 V
(T5) Normal Overload 110%, SFAVM
86
1 2 3 4 5 6
1 2 3 4
Danfoss A/S © 04/2015 All rights reserved.
®
VLT HVAC Drive FC 102 Low Harmonic Drive
110
100
90
80
70
60
50
0
Figure 8.3 Derating Enclosure Sizes E and F, P315 to P710
380-480 V (T5) Normal Overload 110%, 60 AVM
o
45 C
o
50 C
o
55 C
110
7 8 9
100
90
80
70
60
50
0
o
40 C
o
45 C
Figure 8.4 Derating Enclosure Sizes E and F, P315 to P710
o
50 C
o
55 C 380-480 V (T5) Normal Overload 110%, SFAVM
5 6
1 2 3 4
1 2 3
o
45 C
o
50 C
o
55 C
5 6 7
o
40 C
o
45 C
o
50 C
o
55 C
4 5
MG16I322