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Recent content by grefzap

  1. grefzap

    Minimum RPM for TEFC motor

    We are using a VFD to control a 3/4 HP, TEFC, 1800 RPM, 1.15 SF motor with rolled steel frame. The Application is constant torque (positive displacement pump). The actual HP (at full speed) is only about 1/4 HP. Is there any way to estimate the minimum RPM for the motor without overheating. We...
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