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TYPES OF AC MOTORS AND THEIR
THREEPHASE INDUCTION MOTORS
9 other sections not shown
Allen West amperes armature automatic auxiliary switch bi-metal brush button capacitor motors cent change-over closed commutator Contactor Starter contacts control gear dashpot DC motor delta delta connection direct switching electrical electromagnetic excitation Factor and Efficiency fitted fractional h.p. frequency full-load current full-load torque h.p. motors hand-operated starters illustrated in Fig interlocking load machine main winding master frequency mechanical multi-finger normal obtained operating coil over-current releases overload phase plunger pole face position power factor push-button reactance repulsion motor rotary magnetic field rotation rotor circuit rotor contactors rotor winding running short-circuited shown in Fig single-phase slip-ring motor small motors solenoid speed characteristic squirrel-cage motor star star-delta starter starting current starting period starting resistance starting rheostat starting switch starting torque starting winding starts per hour stator contactor stator control switch stator winding suitable supply system synchronous motor thermal relay three-phase induction motor three-phase motor tripping bar under-voltage release voltage Wauchope