11
APPENDIX 1
11.1
POWER LOSSES FOR 380-500 V
If you want to increase the switching frequency of the drive (for example, to decrease the
level of the motor noise), the power losses and cooling requirements change as the figures
below show.
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0
2
4
6
8
10
12
14
16
18
NX0003 500V
NX0004 500V
NX0005 500V
NX0007 500V
NX0009 500V
NX0012 500V
NX0003 400V
NX0004 400V
NX0005 400V
NX0007 400V
NX0009 400V
NX0012 400V
Po
w
er
l
o
ss
(k
W
)
Switching frequency (kHz)
Fig. 34: Power loss as function of switching frequency; NXS or NXP 0003-0012
APPENDIX 1
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11
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