TREND NX Variable Speed Drives - Manual (Page 54)

INSTALLATION vacon • 37
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6
5.3 Power losses
5.3.1 Power losses as function of switching frequency
If the operator wants to raise the switching frequency of the drive for some reason (typically e.g. in order to
reduce the motor noise), this inevitably affects the power losses and cooling requirements according to the
graphs below.
Figure 5-13. Power loss as function of switching frequency; 0003…0012NX5
Figure 5-14. Power loss as function of switching frequency; 0016…0031NX5
0,00
20,00
40,00
60,00
80,00
100,00
120,00
140,00
160,00
180,00
200,00
0,00 2,00 4,00 6,00 8,00 10,00 12,00 14,00 16,00
Switching frequency [kHz]
P [W]
0003NX5 400V 0004NX5 400V 0005NX5 400V 0007NX5 400V
0009NX5 400V 0012NX5 400V
0,00
100,00
200,00
300,00
400,00
500,00
600,00
700,00
800,00
900,00
0,00 2,00 4,00 6,00 8,00 10,00 12,00 14,00 16,00
Switching frequency [kHz]
P [
W
]
0016NX5 400V 0016NX5 500V 0022NX5 400V 0022NX5 500V
0031NX5 400V 0031NX5 500V