https://www.youtube.com/watch?v=dzEwxLZr6HkA quick review of the FLIR clamp meter. Nice features like power measurement, phase angle and THD along with being able to read the output of a variable speed drive.
Now Martin needs to buy a small 3 phase motor and an inverter drive, and connect it up on a board, with a set of loops for motor current measure, motor voltage and of course input power measuring loops. then he can test out these meters nicely. motor shaft needs a small load like a fan or a friction band torque meter.
I want to get a cheap Chinese VFD myself to play around with, or at least to use to control motor speed.