Hi,
Thanks for replays.
Marco ->
MyDAQ and Analog Discovery are usable only with USB connection to the PC or laptop.
LabView is not my first choice, but as i have look in to the details Red Pitaya also support LabView through SCPI commands and TCP connection.
My goal was to make my own additional electronics which will handle high current/voltage side.
http://redpitaya.com/make-your-app/#Exampleskripton2035 ->
This board can be interesting but the integrated ADC (MCP3202 )is on my opinion to slow for PWM signal in Frequency Variable Drive. This PWM voltage signals are pwm modulated with switching frequencies from 5-10 kHz and slew rates in ns. Couple that with inductive load such is AC motors and you get current signals with substantial ripple.
In order to calculate true rms, real and reactive power my sampling must be at least 1MS/s.
(I think so)
PS: They have also an LCR meter
http://blog.redpitaya.com/?p=650http://blog.redpitaya.com/?cat=10dom->
Of course, i am thinking about high frequency voltage and current transformers/toroids do
isolate the mains.
_____
So, in short
power analyzer must be let’s say not to simple and little bit advance
additional electronics is something what i must do (its student project)
pow. analyzer must be standalone device - user interface is on device itself or non-connected pc/laptop
Thank you for your suggestion - i think that final blueprints are here
best