Hey everyone!
I want to measure Appearant Power (S), Real Power (P), and Reactive Power (Q).
My load is Heat Pump Water Heater (HPWT) with input voltage of 240V.
Currently I have voltage and current transducer implemented in my circuit.

The output singals of both transducers are DC, so what are the possible ways to measure the phase angle and power factor besides the S, P, and Q?

Thanks,

 

You could you a frequency inverter to drive the pump. Most modern frequency inverters have a modbus RTU rs485 port that you can use to read-out these parameters. Or map the measurements on an analog output of the frequency inverter.

You can also install a power meter and read out the values like for example this one: https://shop.fortop.nl/nl/en/Janitz...x2o09Dtp5lIqAuZCn2OaoucVdjLdIqMhoCrtUQAvD_BwE

Just google "panel mount power meter" and many solutions will show up.