2-32
Engineering Guide CDA3000
2 Drive definition
Typical torque characteristic of a standard three-phase AC motor
in standard inverter operation
(1) Delivered power output of a 3-phase AC motor with inverter
(2) Permissible torque characteristic of an internally cooled 3-phase AC
motor
(3) Permissible torque characteristic of an adequately externally cooled
3-phase AC motor
(4) Maximum permissible torque for 120 s to DIN VDE 0530 Part 1
Figure 2.19 Torque characteristic of a standard three-phase AC motor in
inverter operation
120
0.1
1.0
0.5
1005010
1.5
M
M
N
f [ Hz]
P >
(2)
(2)
(2)
(1)
(3)
(4)
2.0
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