ECO REFERENCE MANUAL
3-3
Torque
Speed (X 50/60)
Torque capability
Flux, voltage
0 0.5 1.0 1.2 1.5
Torque Reduction above Base Speed
Therefore in order to control the speed of a
standard AC motor, the applied frequency and
voltage must be controlled.
The use of a standard induction motor together
with a variable frequency speed controller allows
a cost effective speed control system to be built.
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