Safe Operating Area (SOA) Ratings of AC Inverter Duty Gearmotors

What is Safe Operating Torque and Speed? We define SOA Torque as the maximum torque at which the motor still operates within Class F thermal limits, or as the maximum torque of a gearmotor when it is gear-strength limited. Continuous duty operation must be limited to the area below the SOA or gear-limited torque curves.

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Pertinent operating conditions for ac gearmotors and motors

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