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CONTROL OF SQUIRRELCAGE MOTORS
CONTROL OF WOUNDROTOR MOTORS
5 other sections not shown
accelerating contactors ambient amperes applied autotransformer bimetal branch circuit button characteristic circuit breakers coil connected control circuit current flows current-limiting cycle d-c motor deenergized devices disconnected drive drop dynamic braking Electrical energized field excitation flux frequency full-load current function fuses general-purpose heater hoist controller horsepower induction motor input interlock interrupting limit switch line contactor locked-rotor current magnetic magnetic amplifier master switch maximum torque motor circuit motor control motor current motor speed motor starters motor torque motor winding National Electrical Code negative-sequence obtained open-circuited output part-winding starters phase plugging power circuit power factor power system protection pushbutton reactance reactor resistor rotation rotor saturable reactors secondary circuit secondary resistance selsyn short-circuit current shown in Fig single-phase slip rings speed-torque curves squirrel-cage motor squirrel-cage winding standstill starting current starting torque stator stator winding synchronous motor synchronous speed temperature thermal overload relays three-phase transformer trip unit voltage volts wound-rotor motor