1/14/2015 1 MOTORS & CONTROLLERS NEC430 Electrical Training Seminar BKV Group Chad Kurdi 2015 SQUIRREL-CAGE INDUCTION MOTOR Good starting torque Stator & rotor are linked by a common magnetic circuit SQUIRREL-CAGE INDUCTION MOTOR SS=(120*F)/#poles ELECTRICAL & CONTROL SYMBOLS MOTOR CONTROLLERS Manual Starters Magnetic Starters FVNR - Full voltage Non-reversing FVR - Full voltage Reversing 2S2W - Two Speed - Two Winding Starter RVAT - Reduced Voltage Autotransformer Electronic Motor Control SSRV - Solid State Reduced Voltage VFD - Adjustable Speed ACROSS THE LINE STARTER