Uploaded September 2021 | Updated September 2026, 2 weeks ago
This 2 HP 3-phase induction motor is plated 400 / 440 V delta but I don't have a true 3-phase supply of that voltage so I used a 220 / 240 V inverter (WEG CFW300) instead. All I needed to do was check the motor spins and I realise this is not an optimal setup (2 HP motor, 1 HP VFD and unmatched voltages). Induction motor speed is frequency and not voltage dependent but with only half the voltage I'm assuming output power would be around 1/4 or less of the rated power (power = V^2 / R). I'm ignoring slip. If you watch the video you'll note the F022 fault code raised during a "quick" ramp down (inertial load?) I presume this would not happen with an appropriately matched VFD, which this is not. The motor came from a Multico A3 table saw which I'm told came from a hospital. The motor and table saw appear to have had little use and I will be selling the motor in due course.
This 2 HP 3-phase induction motor is plated 400 / 440 V delta but I don't have a true 3-phase supply of that voltage so I used a 220 / 240 V inverter (WEG CFW300) instead. All I needed to do was check the motor spins and I realise this is not an optimal setup (2 HP motor, 1 HP VFD and unmatched voltages). Induction motor speed is frequency and not voltage dependent but with only half the voltage I'm assuming output power would be around 1/4 or less of the rated power (power = V^2 / R). I'm ignoring slip. If you watch the video you'll note the F022 fault code raised during a "quick" ramp down (inertial load?) I presume this would not happen with an appropriately matched VFD, which this is not. The motor came from a Multico A3 table saw which I'm told came from a hospital. The motor and table saw appear to have had little use and I will be selling the motor in due course.
