Motor torque, load torque and selection of motors
I2R loss in the rotor circuit, it develops a high starting torque and accomplishes an analogue to a slip-ring motor. When the rotor reaches the rated speed, the reactances of both the cages are almost negligible because of low slip Figure 2.3 Speed–torque characteristics of motors as per NEMA standard
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Motor torque, load torque and selection of motors
www.electricalengineering-book.com2/41 2 Motor torque, load torque and selection of motors Contents 2.1 Motor speed–torque curve 2/43 2.2 NEMA rotor designs 2/43 2.3 Special designs of rotors 2/44
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