My friend and I used a 100HP VFD to spin up and idle a 200HP motor.
We used a transformer to step up the voltage to 460V and ran that through a regular home extension cord (14ga or 16ga) as the input power into the VFD. It’s the orange cord toward the end of the video.
We soft started the motor with a slow ramp, but we were able to drive the 1750RPM motor up to 80Hz/2400RPM.
You can see the VFD panel showing the frequency and RPM.
The motor was obviously unloaded other than the significant energy the motor fan used to swirl air. Even at 460V, 14ga is only able to carry about 9KW or so.
YouTube
We used a transformer to step up the voltage to 460V and ran that through a regular home extension cord (14ga or 16ga) as the input power into the VFD. It’s the orange cord toward the end of the video.
We soft started the motor with a slow ramp, but we were able to drive the 1750RPM motor up to 80Hz/2400RPM.
You can see the VFD panel showing the frequency and RPM.
The motor was obviously unloaded other than the significant energy the motor fan used to swirl air. Even at 460V, 14ga is only able to carry about 9KW or so.
YouTube