Hi guys,
Some of you may be interested. I set up the VDF with a potentiometer and the 2.2kw spindle on the bench at 15000rev. The Amp setting on the panel was saying 1.5A

Then I used my ammeter on the mains power cable and it actually measured 0.8A. I trust this reading to be more accurate than the VFD panel reading.

Naturally this was without any load, i.e. not cutting anything, so the current will go up under cutting conditions, nevertheless I thought it was interesting to see how little current it draws and also to show the disparity between the panel reading and an ammeter reading.

I also measured the noise level (again without load) using a digital decibel meter. My room level is 41db. The fan is quite noisy, at around 53db (1 meter distance) and with the spindle on at 15000 revs it read 62db. I was quite surprised that it is so quiet on the bench.

Edward