ELECTRICAL APPARATUS

ULTISPEED INDUCTION MOTORANLPS

MULTISPEED INDUCTION MOTOR
6 POLES 1200 REV.

8 POLES 900 REV.

0.5 1.0 1.5 2,0 25 3,0 85_Kw

05 10 15 20 25 30 35 40 45KW.

FIG. 10.—Load curve of multi- FIG. 11.—Load curves of multi-
speed induction motor, middle speed induction motor, low speed,
speed, six poles. eight poles.

REV.
1800

MULTISPEED INDUCTION MOTOR 4-8-8-POLES. 180O-12OO-900 REV.

1700 1600

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5 2
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.KW.

FIG. 12.—Comparison of load curves of three-speed induction motor.