Constant Torque Acceleration Time of Fan

Fan is direct driven by motor

Motor is accelerated by a VFD with Torque Limit set @ 100%

Given: Fan Torque Load @ rated Speed = 663 ft-lbs

Rated Motor Torque = 868 ft.-lbs

Rated Fan RPM = 880 rpm

Motor Inertia = 125 lb-ft ² Fan Inertia = 6597 lb-ft ²

Total Inertia = 6722 lb-ft ²