Ac Motor Drive; Motor - Delta Electronics AC Motor Drive VFD-VE Series User Manual

The torque characteristics of a motor operated by an AC motor drive and commercial mains
power are different.
Below you'll find the torque-speed characteristics of a standard motor (4-pole, 15kW):
180
155
140
100
80
55
38
0 3 20
Frequency (Hz)
Base freq.: 60Hz
V/F for 220V/60Hz
140
130
100
85
68
45
35
0 3 20
Frequency (Hz)
Base freq.: 50Hz
V/F for 220V/50Hz
Revision August 2008, 03VE, SW V2.04
Appendix C How to Select the Right AC Motor Drive|

AC motor drive

60 seconds 60 seconds
60
120
60 seconds
50
120

Motor

180
60 seconds
155
100
55
38
0 3 20
60
Frequency (Hz)
Base freq.: 60Hz
V/F for 220V/60Hz
180
60 seconds
150
100
80
45
35
0
3 20 50
Frequency (Hz)
Base freq.: 50Hz
V/F for 220V/50Hz
120
120
C-7